/* Source code parsing and tree node generation for the GNU compiler
   for the Java(TM) language.
   Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
   Contributed by Alexandre Petit-Bianco (apbianco@cygnus.com)

This file is part of GNU CC.

GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.

Java and all Java-based marks are trademarks or registered trademarks
of Sun Microsystems, Inc. in the United States and other countries.
The Free Software Foundation is independent of Sun Microsystems, Inc.  */

/* This file parses java source code and issues a tree node image
suitable for code generation (byte code and targeted CPU assembly
language).

The grammar conforms to the Java grammar described in "The Java(TM)
Language Specification. J. Gosling, B. Joy, G. Steele. Addison Wesley
1996, ISBN 0-201-63451-1"

The following modifications were brought to the original grammar:

method_body: added the rule '| block SC_TK'
static_initializer: added the rule 'static block SC_TK'. 

Note: All the extra rules described above should go away when the
      empty_statement rule will work.

statement_nsi: 'nsi' should be read no_short_if.

Some rules have been modified to support JDK1.1 inner classes
definitions and other extensions.  */

%{
#include "config.h"
#include "system.h"
#include <dirent.h>
#include "tree.h"
#include "rtl.h"
#include "obstack.h"
#include "toplev.h"
#include "flags.h"
#include "java-tree.h"
#include "jcf.h"
#include "lex.h"
#include "parse.h"
#include "zipfile.h"
#include "convert.h"
#include "buffer.h"
#include "xref.h"
#include "function.h"
#include "except.h"
#include "defaults.h"

#ifndef DIR_SEPARATOR
#define DIR_SEPARATOR '/'
#endif

/* Local function prototypes */
static char *java_accstring_lookup PARAMS ((int));
static void  classitf_redefinition_error PARAMS ((const char *,tree, tree, tree));
static void  variable_redefinition_error PARAMS ((tree, tree, tree, int));
static tree  create_class PARAMS ((int, tree, tree, tree));
static tree  create_interface PARAMS ((int, tree, tree));
static void  end_class_declaration PARAMS ((int));
static tree  find_field PARAMS ((tree, tree));
static tree lookup_field_wrapper PARAMS ((tree, tree));
static int   duplicate_declaration_error_p PARAMS ((tree, tree, tree));
static void  register_fields PARAMS ((int, tree, tree));
static tree parser_qualified_classname PARAMS ((int, tree));
static int  parser_check_super PARAMS ((tree, tree, tree));
static int  parser_check_super_interface PARAMS ((tree, tree, tree));
static void check_modifiers_consistency PARAMS ((int));
static tree lookup_cl PARAMS ((tree));
static tree lookup_java_method2 PARAMS ((tree, tree, int));
static tree method_header PARAMS ((int, tree, tree, tree));
static void fix_method_argument_names PARAMS ((tree ,tree));
static tree method_declarator PARAMS ((tree, tree));
static void parse_warning_context PARAMS ((tree cl, const char *msg, ...))
  ATTRIBUTE_PRINTF_2;
static void issue_warning_error_from_context PARAMS ((tree, const char *msg, va_list));
static void parse_ctor_invocation_error PARAMS ((void));
static tree parse_jdk1_1_error PARAMS ((const char *));
static void complete_class_report_errors PARAMS ((jdep *));
static int process_imports PARAMS ((void));
static void read_import_dir PARAMS ((tree));
static int find_in_imports_on_demand PARAMS ((tree));
static int find_in_imports PARAMS ((tree));
static int check_pkg_class_access PARAMS ((tree, tree));
static tree resolve_package PARAMS ((tree, tree *));
static tree lookup_package_type PARAMS ((const char *, int));
static tree lookup_package_type_and_set_next PARAMS ((const char *, int, tree *));
static tree resolve_class PARAMS ((tree, tree, tree, tree));
static void declare_local_variables PARAMS ((int, tree, tree));
static void source_start_java_method PARAMS ((tree));
static void source_end_java_method PARAMS ((void));
static void expand_start_java_method PARAMS ((tree));
static tree find_name_in_single_imports PARAMS ((tree));
static void check_abstract_method_header PARAMS ((tree));
static tree lookup_java_interface_method2 PARAMS ((tree, tree));
static tree resolve_expression_name PARAMS ((tree, tree *));
static tree maybe_create_class_interface_decl PARAMS ((tree, tree, tree, tree));
static int check_class_interface_creation PARAMS ((int, int, tree, 
						  tree, tree, tree));
static tree patch_method_invocation PARAMS ((tree, tree, tree, 
					    int *, tree *));
static int breakdown_qualified PARAMS ((tree *, tree *, tree));
static tree resolve_and_layout PARAMS ((tree, tree));
static tree resolve_no_layout PARAMS ((tree, tree));
static int invocation_mode PARAMS ((tree, int));
static tree find_applicable_accessible_methods_list PARAMS ((int, tree, 
							    tree, tree));
static void search_applicable_methods_list PARAMS ((int, tree, tree, tree, 
						   tree *, tree *));
static tree find_most_specific_methods_list PARAMS ((tree));
static int argument_types_convertible PARAMS ((tree, tree));
static tree patch_invoke PARAMS ((tree, tree, tree));
static int maybe_use_access_method PARAMS ((int, tree *, tree *));
static tree lookup_method_invoke PARAMS ((int, tree, tree, tree, tree));
static tree register_incomplete_type PARAMS ((int, tree, tree, tree));
static tree obtain_incomplete_type PARAMS ((tree));
static tree java_complete_lhs PARAMS ((tree));
static tree java_complete_tree PARAMS ((tree));
static tree maybe_generate_pre_expand_clinit PARAMS ((tree));
static void java_complete_expand_method PARAMS ((tree));
static int  unresolved_type_p PARAMS ((tree, tree *));
static void create_jdep_list PARAMS ((struct parser_ctxt *));
static tree build_expr_block PARAMS ((tree, tree));
static tree enter_block PARAMS ((void));
static tree enter_a_block PARAMS ((tree));
static tree exit_block PARAMS ((void));
static tree lookup_name_in_blocks PARAMS ((tree));
static void maybe_absorb_scoping_blocks PARAMS ((void));
static tree build_method_invocation PARAMS ((tree, tree));
static tree build_new_invocation PARAMS ((tree, tree));
static tree build_assignment PARAMS ((int, int, tree, tree));
static tree build_binop PARAMS ((enum tree_code, int, tree, tree));
static int check_final_assignment PARAMS ((tree ,tree));
static tree patch_assignment PARAMS ((tree, tree, tree ));
static tree patch_binop PARAMS ((tree, tree, tree));
static tree build_unaryop PARAMS ((int, int, tree));
static tree build_incdec PARAMS ((int, int, tree, int));
static tree patch_unaryop PARAMS ((tree, tree));
static tree build_cast PARAMS ((int, tree, tree));
static tree build_null_of_type PARAMS ((tree));
static tree patch_cast PARAMS ((tree, tree));
static int valid_ref_assignconv_cast_p PARAMS ((tree, tree, int));
static int valid_builtin_assignconv_identity_widening_p PARAMS ((tree, tree));
static int valid_cast_to_p PARAMS ((tree, tree));
static int valid_method_invocation_conversion_p PARAMS ((tree, tree));
static tree try_builtin_assignconv PARAMS ((tree, tree, tree));
static tree try_reference_assignconv PARAMS ((tree, tree));
static tree build_unresolved_array_type PARAMS ((tree));
static tree build_array_from_name PARAMS ((tree, tree, tree, tree *));
static tree build_array_ref PARAMS ((int, tree, tree));
static tree patch_array_ref PARAMS ((tree));
static tree make_qualified_name PARAMS ((tree, tree, int));
static tree merge_qualified_name PARAMS ((tree, tree));
static tree make_qualified_primary PARAMS ((tree, tree, int));
static int resolve_qualified_expression_name PARAMS ((tree, tree *, 
						     tree *, tree *));
static void qualify_ambiguous_name PARAMS ((tree));
static tree resolve_field_access PARAMS ((tree, tree *, tree *));
static tree build_newarray_node PARAMS ((tree, tree, int));
static tree patch_newarray PARAMS ((tree));
static tree resolve_type_during_patch PARAMS ((tree));
static tree build_this PARAMS ((int));
static tree build_wfl_wrap PARAMS ((tree));
static tree build_return PARAMS ((int, tree));
static tree patch_return PARAMS ((tree));
static tree maybe_access_field PARAMS ((tree, tree, tree));
static int complete_function_arguments PARAMS ((tree));
static int check_for_static_method_reference PARAMS ((tree, tree, tree, 
						      tree, tree));
static int not_accessible_p PARAMS ((tree, tree, int));
static void check_deprecation PARAMS ((tree, tree));
static int class_in_current_package PARAMS ((tree));
static tree build_if_else_statement PARAMS ((int, tree, tree, tree));
static tree patch_if_else_statement PARAMS ((tree));
static tree add_stmt_to_compound PARAMS ((tree, tree, tree));
static tree add_stmt_to_block PARAMS ((tree, tree, tree));
static tree patch_exit_expr PARAMS ((tree));
static tree build_labeled_block PARAMS ((int, tree));
static tree finish_labeled_statement PARAMS ((tree, tree));
static tree build_bc_statement PARAMS ((int, int, tree));
static tree patch_bc_statement PARAMS ((tree));
static tree patch_loop_statement PARAMS ((tree));
static tree build_new_loop PARAMS ((tree));
static tree build_loop_body PARAMS ((int, tree, int));
static tree finish_loop_body PARAMS ((int, tree, tree, int));
static tree build_debugable_stmt PARAMS ((int, tree));
static tree finish_for_loop PARAMS ((int, tree, tree, tree));
static tree patch_switch_statement PARAMS ((tree));
static tree string_constant_concatenation PARAMS ((tree, tree));
static tree build_string_concatenation PARAMS ((tree, tree));
static tree patch_string_cst PARAMS ((tree));
static tree patch_string PARAMS ((tree));
static tree build_try_statement PARAMS ((int, tree, tree));
static tree build_try_finally_statement PARAMS ((int, tree, tree));
static tree patch_try_statement PARAMS ((tree));
static tree patch_synchronized_statement PARAMS ((tree, tree));
static tree patch_throw_statement PARAMS ((tree, tree));
static void check_thrown_exceptions PARAMS ((int, tree));
static int check_thrown_exceptions_do PARAMS ((tree));
static void purge_unchecked_exceptions PARAMS ((tree));
static void check_throws_clauses PARAMS ((tree, tree, tree));
static void finish_method_declaration PARAMS ((tree));
static tree build_super_invocation PARAMS ((tree));
static int verify_constructor_circularity PARAMS ((tree, tree));
static char *constructor_circularity_msg PARAMS ((tree, tree));
static tree build_this_super_qualified_invocation PARAMS ((int, tree, tree,
							  int, int));
static const char *get_printable_method_name PARAMS ((tree));
static tree patch_conditional_expr PARAMS ((tree, tree, tree));
static tree generate_finit PARAMS ((tree));
static void add_instance_initializer PARAMS ((tree));
static void fix_constructors PARAMS ((tree));
static tree build_alias_initializer_parameter_list PARAMS ((int, tree,
							    tree, int *));
static void craft_constructor PARAMS ((tree, tree));
static int verify_constructor_super PARAMS ((tree));
static tree create_artificial_method PARAMS ((tree, int, tree, tree, tree));
static void start_artificial_method_body PARAMS ((tree));
static void end_artificial_method_body PARAMS ((tree));
static int check_method_redefinition PARAMS ((tree, tree));
static int reset_method_name PARAMS ((tree));
static int check_method_types_complete PARAMS ((tree));
static void java_check_regular_methods PARAMS ((tree));
static void java_check_abstract_methods PARAMS ((tree));
static tree maybe_build_primttype_type_ref PARAMS ((tree, tree));
static void unreachable_stmt_error PARAMS ((tree));
static tree find_expr_with_wfl PARAMS ((tree));
static void missing_return_error PARAMS ((tree));
static tree build_new_array_init PARAMS ((int, tree));
static tree patch_new_array_init PARAMS ((tree, tree));
static tree maybe_build_array_element_wfl PARAMS ((tree));
static int array_constructor_check_entry PARAMS ((tree, tree));
static const char *purify_type_name PARAMS ((const char *));
static tree fold_constant_for_init PARAMS ((tree, tree));
static tree strip_out_static_field_access_decl PARAMS ((tree));
static jdeplist *reverse_jdep_list PARAMS ((struct parser_ctxt *));
static void static_ref_err PARAMS ((tree, tree, tree));
static void parser_add_interface PARAMS ((tree, tree, tree));
static void add_superinterfaces PARAMS ((tree, tree));
static tree jdep_resolve_class PARAMS ((jdep *));
static int note_possible_classname PARAMS ((const char *, int));
static void java_complete_expand_classes PARAMS ((void));
static void java_complete_expand_class PARAMS ((tree));
static void java_complete_expand_methods PARAMS ((tree));
static tree cut_identifier_in_qualified PARAMS ((tree));
static tree java_stabilize_reference PARAMS ((tree));
static tree do_unary_numeric_promotion PARAMS ((tree));
static char * operator_string PARAMS ((tree));
static tree do_merge_string_cste PARAMS ((tree, const char *, int, int));
static tree merge_string_cste PARAMS ((tree, tree, int));
static tree java_refold PARAMS ((tree));
static int java_decl_equiv PARAMS ((tree, tree));
static int binop_compound_p PARAMS ((enum tree_code));
static tree search_loop PARAMS ((tree));
static int labeled_block_contains_loop_p PARAMS ((tree, tree));
static void check_abstract_method_definitions PARAMS ((int, tree, tree));
static void java_check_abstract_method_definitions PARAMS ((tree));
static void java_debug_context_do PARAMS ((int));
static void java_parser_context_push_initialized_field PARAMS ((void));
static void java_parser_context_pop_initialized_field PARAMS ((void));
static tree reorder_static_initialized PARAMS ((tree));
static void java_parser_context_suspend PARAMS ((void));
static void java_parser_context_resume PARAMS ((void));

/* JDK 1.1 work. FIXME */

static tree maybe_make_nested_class_name PARAMS ((tree));
static void make_nested_class_name PARAMS ((tree));
static void set_nested_class_simple_name_value PARAMS ((tree, int));
static void link_nested_class_to_enclosing PARAMS ((void));
static tree find_as_inner_class PARAMS ((tree, tree, tree));
static tree find_as_inner_class_do PARAMS ((tree, tree));
static int check_inner_class_redefinition PARAMS ((tree, tree));

static tree build_thisn_assign PARAMS ((void));
static tree build_current_thisn PARAMS ((tree));
static tree build_access_to_thisn PARAMS ((tree, tree, int));
static tree maybe_build_thisn_access_method PARAMS ((tree));

static tree build_outer_field_access PARAMS ((tree, tree));
static tree build_outer_field_access_methods PARAMS ((tree));
static tree build_outer_field_access_expr PARAMS ((int, tree, tree, 
						  tree, tree));
static tree build_outer_method_access_method PARAMS ((tree));
static tree build_new_access_id PARAMS ((void));
static tree build_outer_field_access_method PARAMS ((tree, tree, tree,
						    tree, tree));

static int outer_field_access_p PARAMS ((tree, tree));
static int outer_field_expanded_access_p PARAMS ((tree, tree *, 
						 tree *, tree *));
static tree outer_field_access_fix PARAMS ((tree, tree, tree));
static tree build_incomplete_class_ref PARAMS ((int, tree));
static tree patch_incomplete_class_ref PARAMS ((tree));
static tree create_anonymous_class PARAMS ((int, tree));
static void patch_anonymous_class PARAMS ((tree, tree, tree));
static void add_inner_class_fields PARAMS ((tree, tree));

static tree build_dot_class_method PARAMS ((tree));
static tree build_dot_class_method_invocation PARAMS ((tree));
static void create_new_parser_context PARAMS ((int));

/* Number of error found so far. */
int java_error_count; 
/* Number of warning found so far. */
int java_warning_count;
/* Tell when not to fold, when doing xrefs */
int do_not_fold;
/* Cyclic inheritance report, as it can be set by layout_class */
char *cyclic_inheritance_report;

/* Tell when we're within an instance initializer */
static int in_instance_initializer;

/* The current parser context */
struct parser_ctxt *ctxp;

/* List of things that were analyzed for which code will be generated */
static struct parser_ctxt *ctxp_for_generation = NULL;

/* binop_lookup maps token to tree_code. It is used where binary
   operations are involved and required by the parser. RDIV_EXPR
   covers both integral/floating point division. The code is changed
   once the type of both operator is worked out.  */

static enum tree_code binop_lookup[19] = 
  { 
    PLUS_EXPR, MINUS_EXPR, MULT_EXPR, RDIV_EXPR, TRUNC_MOD_EXPR,
    LSHIFT_EXPR, RSHIFT_EXPR, URSHIFT_EXPR, 
    BIT_AND_EXPR, BIT_XOR_EXPR, BIT_IOR_EXPR,
    TRUTH_ANDIF_EXPR, TRUTH_ORIF_EXPR,
    EQ_EXPR, NE_EXPR, GT_EXPR, GE_EXPR, LT_EXPR, LE_EXPR,
   };
#define BINOP_LOOKUP(VALUE) 						\
  binop_lookup [((VALUE) - PLUS_TK)%					\
		(sizeof (binop_lookup) / sizeof (binop_lookup[0]))]

/* This is the end index for binary operators that can also be used
   in compound assignements. */
#define BINOP_COMPOUND_CANDIDATES 11

/* Fake WFL used to report error message. It is initialized once if
   needed and reused with it's location information is overriden.  */
tree wfl_operator = NULL_TREE;

/* The "$L" identifier we use to create labels.  */
static tree label_id = NULL_TREE;

/* The "StringBuffer" identifier used for the String `+' operator. */
static tree wfl_string_buffer = NULL_TREE; 

/* The "append" identifier used for String `+' operator.  */
static tree wfl_append = NULL_TREE;

/* The "toString" identifier used for String `+' operator. */
static tree wfl_to_string = NULL_TREE;

/* The "java.lang" import qualified name.  */
static tree java_lang_id = NULL_TREE;

/* The generated `inst$' identifier used for generated enclosing
   instance/field access functions.  */
static tree inst_id = NULL_TREE;

/* The "java.lang.Cloneable" qualified name.  */
static tree java_lang_cloneable = NULL_TREE;

/* Context and flag for static blocks */
static tree current_static_block = NULL_TREE;

/* The generated `write_parm_value$' identifier.  */
static tree wpv_id;

/* The list of all packages we've seen so far */
static tree package_list = NULL_TREE;
 
/* Check modifiers. If one doesn't fit, retrieve it in its declaration
   line and point it out.  */
/* Should point out the one that don't fit. ASCII/unicode, going
   backward. FIXME */

#define check_modifiers(__message, __value, __mask) do {	\
  if ((__value) & ~(__mask))					\
    {								\
      int i, remainder = (__value) & ~(__mask);			\
      for (i = 0; i <= 10; i++)					\
        if ((1 << i) & remainder)				\
	  parse_error_context (ctxp->modifier_ctx [i], (__message), \
			       java_accstring_lookup (1 << i)); \
    }								\
} while (0)

%}

%union {
  tree node;
  int sub_token;
  struct {
    int token;
    int location;
  } operator;
  int value;
}

%{
#include "lex.c"
%}

%pure_parser

/* Things defined here have to match the order of what's in the
   binop_lookup table.  */

%token   PLUS_TK         MINUS_TK        MULT_TK         DIV_TK    REM_TK
%token   LS_TK           SRS_TK          ZRS_TK
%token   AND_TK          XOR_TK          OR_TK
%token   BOOL_AND_TK BOOL_OR_TK 
%token   EQ_TK NEQ_TK GT_TK GTE_TK LT_TK LTE_TK

/* This maps to the same binop_lookup entry than the token above */

%token   PLUS_ASSIGN_TK  MINUS_ASSIGN_TK MULT_ASSIGN_TK DIV_ASSIGN_TK
%token   REM_ASSIGN_TK   
%token   LS_ASSIGN_TK    SRS_ASSIGN_TK   ZRS_ASSIGN_TK
%token   AND_ASSIGN_TK   XOR_ASSIGN_TK   OR_ASSIGN_TK


/* Modifier TOKEN have to be kept in this order. Don't scramble it */

%token   PUBLIC_TK       PRIVATE_TK         PROTECTED_TK
%token   STATIC_TK       FINAL_TK           SYNCHRONIZED_TK
%token   VOLATILE_TK     TRANSIENT_TK       NATIVE_TK
%token   PAD_TK          ABSTRACT_TK        MODIFIER_TK

/* Keep those two in order, too */
%token   DECR_TK INCR_TK

/* From now one, things can be in any order */

%token   DEFAULT_TK      IF_TK              THROW_TK
%token   BOOLEAN_TK      DO_TK              IMPLEMENTS_TK
%token   THROWS_TK       BREAK_TK           IMPORT_TK       
%token   ELSE_TK         INSTANCEOF_TK      RETURN_TK
%token   VOID_TK         CATCH_TK           INTERFACE_TK
%token   CASE_TK         EXTENDS_TK         FINALLY_TK
%token   SUPER_TK        WHILE_TK           CLASS_TK
%token   SWITCH_TK       CONST_TK           TRY_TK
%token   FOR_TK          NEW_TK             CONTINUE_TK
%token   GOTO_TK         PACKAGE_TK         THIS_TK

%token   BYTE_TK         SHORT_TK           INT_TK            LONG_TK
%token   CHAR_TK         INTEGRAL_TK

%token   FLOAT_TK        DOUBLE_TK          FP_TK

%token   ID_TK

%token   REL_QM_TK         REL_CL_TK NOT_TK  NEG_TK

%token   ASSIGN_ANY_TK   ASSIGN_TK
%token   OP_TK  CP_TK  OCB_TK  CCB_TK  OSB_TK  CSB_TK  SC_TK  C_TK DOT_TK

%token   STRING_LIT_TK   CHAR_LIT_TK        INT_LIT_TK        FP_LIT_TK
%token   TRUE_TK         FALSE_TK           BOOL_LIT_TK       NULL_TK

%type    <value>	modifiers MODIFIER_TK final synchronized

%type    <node>		super ID_TK identifier
%type    <node>		name simple_name qualified_name
%type	 <node>		type_declaration compilation_unit
			field_declaration method_declaration extends_interfaces
                        interfaces interface_type_list
                        class_member_declaration
                        import_declarations package_declaration 
                        type_declarations interface_body
			interface_member_declaration constant_declaration
			interface_member_declarations interface_type
			abstract_method_declaration interface_type_list
%type	 <node>		class_body_declaration class_member_declaration
			static_initializer constructor_declaration block
%type	 <node>		class_body_declarations constructor_header
%type    <node>		class_or_interface_type class_type class_type_list
			constructor_declarator explicit_constructor_invocation
%type    <node>         dim_expr dim_exprs this_or_super throws

%type	 <node>		variable_declarator_id variable_declarator
			variable_declarators variable_initializer
			variable_initializers constructor_body
			array_initializer

%type	 <node>		class_body block_end constructor_block_end
%type	 <node>		statement statement_without_trailing_substatement
			labeled_statement if_then_statement label_decl
			if_then_else_statement while_statement for_statement
			statement_nsi labeled_statement_nsi do_statement
			if_then_else_statement_nsi while_statement_nsi
			for_statement_nsi statement_expression_list for_init
			for_update statement_expression expression_statement
			primary_no_new_array expression primary
			array_creation_expression array_type
			class_instance_creation_expression field_access
			method_invocation array_access something_dot_new
			argument_list postfix_expression while_expression 
			post_increment_expression post_decrement_expression
			unary_expression_not_plus_minus unary_expression
			pre_increment_expression pre_decrement_expression
			unary_expression_not_plus_minus cast_expression
			multiplicative_expression additive_expression
			shift_expression relational_expression 
			equality_expression and_expression 
			exclusive_or_expression inclusive_or_expression
			conditional_and_expression conditional_or_expression
			conditional_expression assignment_expression
			left_hand_side assignment for_header for_begin
			constant_expression do_statement_begin empty_statement
			switch_statement synchronized_statement throw_statement
			try_statement switch_expression switch_block
			catches catch_clause catch_clause_parameter finally
			anonymous_class_creation
%type    <node>         return_statement break_statement continue_statement

%type    <operator>     ASSIGN_TK      MULT_ASSIGN_TK  DIV_ASSIGN_TK  
%type    <operator>     REM_ASSIGN_TK  PLUS_ASSIGN_TK  MINUS_ASSIGN_TK
%type    <operator>     LS_ASSIGN_TK   SRS_ASSIGN_TK   ZRS_ASSIGN_TK
%type    <operator>     AND_ASSIGN_TK  XOR_ASSIGN_TK   OR_ASSIGN_TK
%type    <operator>     ASSIGN_ANY_TK  assignment_operator
%token   <operator>     EQ_TK GTE_TK ZRS_TK SRS_TK GT_TK LTE_TK LS_TK 
%token   <operator>     BOOL_AND_TK AND_TK BOOL_OR_TK OR_TK INCR_TK PLUS_TK
%token   <operator>     DECR_TK MINUS_TK MULT_TK DIV_TK XOR_TK REM_TK NEQ_TK
%token   <operator>     NEG_TK REL_QM_TK REL_CL_TK NOT_TK LT_TK OCB_TK CCB_TK
%token   <operator>     OP_TK OSB_TK DOT_TK THROW_TK INSTANCEOF_TK
%type    <operator>	THIS_TK SUPER_TK RETURN_TK BREAK_TK CONTINUE_TK 
%type	 <operator>     CASE_TK DEFAULT_TK TRY_TK CATCH_TK SYNCHRONIZED_TK
%type	 <operator>     NEW_TK

%type	 <node>		method_body 
	
%type    <node>		literal INT_LIT_TK FP_LIT_TK BOOL_LIT_TK CHAR_LIT_TK
			STRING_LIT_TK NULL_TK VOID_TK

%type	 <node>		IF_TK WHILE_TK FOR_TK

%type    <node>         formal_parameter_list formal_parameter
                        method_declarator method_header

%type	 <node>		primitive_type reference_type type 
			BOOLEAN_TK INTEGRAL_TK FP_TK

/* Added or modified JDK 1.1 rule types  */
%type	 <node>		type_literals array_type_literal

%%
/* 19.2 Production from 2.3: The Syntactic Grammar  */
goal:
	compilation_unit
		{}
;

/* 19.3 Productions from 3: Lexical structure  */
literal:
	INT_LIT_TK
|	FP_LIT_TK
|	BOOL_LIT_TK
|	CHAR_LIT_TK
|       STRING_LIT_TK
|       NULL_TK
;

/* 19.4 Productions from 4: Types, Values and Variables  */
type:
	primitive_type
|	reference_type
;

primitive_type:
	INTEGRAL_TK
|	FP_TK
|	BOOLEAN_TK
;

reference_type:
	class_or_interface_type
|	array_type
;

class_or_interface_type:
	name
;

class_type:
	class_or_interface_type	/* Default rule */
;

interface_type:
	 class_or_interface_type
;

array_type:
	primitive_type OSB_TK CSB_TK
		{ 
		  $$ = build_java_array_type ($1, -1);
		  CLASS_LOADED_P ($$) = 1;
		}
|	name OSB_TK CSB_TK
		{ $$ = build_unresolved_array_type ($1); }
|	array_type OSB_TK CSB_TK
		{ $$ = build_unresolved_array_type ($1); }
|	primitive_type OSB_TK error
		{RULE ("']' expected"); RECOVER;}
|	array_type OSB_TK error
		{RULE ("']' expected"); RECOVER;}
;

/* 19.5 Productions from 6: Names  */
name:
	simple_name		/* Default rule */
|	qualified_name		/* Default rule */
;

simple_name:
	identifier		/* Default rule */
;

qualified_name:
	name DOT_TK identifier
		{ $$ = make_qualified_name ($1, $3, $2.location); }
;

identifier:
	ID_TK
;

/* 19.6: Production from 7: Packages  */
compilation_unit:
		{$$ = NULL;}
|	package_declaration
|	import_declarations
|	type_declarations
|       package_declaration import_declarations
|       package_declaration type_declarations
|       import_declarations type_declarations
|       package_declaration import_declarations type_declarations
;

import_declarations:
	import_declaration
		{
		  $$ = NULL;
		}
|	import_declarations import_declaration
		{
		  $$ = NULL;
		}
;

type_declarations:
	type_declaration
| 	type_declarations type_declaration
;

package_declaration:
	PACKAGE_TK name SC_TK
		{ 
		  ctxp->package = EXPR_WFL_NODE ($2);
		  package_list = tree_cons (ctxp->package, NULL, package_list);
		}
|	PACKAGE_TK error
		{yyerror ("Missing name"); RECOVER;}
|	PACKAGE_TK name error
		{yyerror ("';' expected"); RECOVER;}
;

import_declaration:
	single_type_import_declaration
|	type_import_on_demand_declaration
;

single_type_import_declaration:
	IMPORT_TK name SC_TK
		{
		  tree name = EXPR_WFL_NODE ($2), node, last_name;
		  int   i = IDENTIFIER_LENGTH (name)-1;
		  const char *last = &IDENTIFIER_POINTER (name)[i];
		  while (last != IDENTIFIER_POINTER (name))
		    {
		      if (last [0] == '.')
			break;
		      last--;
		    }
		  last_name = get_identifier (++last);
		  if (IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (last_name))
		    {
		      tree err = find_name_in_single_imports (last_name);
		      if (err && err != name)
			parse_error_context
			  ($2, "Ambiguous class: `%s' and `%s'",
			   IDENTIFIER_POINTER (name), 
			   IDENTIFIER_POINTER (err));
		      else
			REGISTER_IMPORT ($2, last_name)
		    }
		  else
		    REGISTER_IMPORT ($2, last_name);
		}
|	IMPORT_TK error
		{yyerror ("Missing name"); RECOVER;}
|	IMPORT_TK name error
		{yyerror ("';' expected"); RECOVER;}
;

type_import_on_demand_declaration:
	IMPORT_TK name DOT_TK MULT_TK SC_TK
		{
		  tree name = EXPR_WFL_NODE ($2);
		  /* Don't import java.lang.* twice. */
		  if (name != java_lang_id)
		    {
		      tree node = build_tree_list ($2, NULL_TREE);
		      read_import_dir ($2);
		      TREE_CHAIN (node) = ctxp->import_demand_list;
		      ctxp->import_demand_list = node;
		    }
		}
|	IMPORT_TK name DOT_TK error
		{yyerror ("'*' expected"); RECOVER;}
|	IMPORT_TK name DOT_TK MULT_TK error
		{yyerror ("';' expected"); RECOVER;}
;

type_declaration:
	class_declaration
		{ end_class_declaration (0); }
|	interface_declaration
		{ end_class_declaration (0); }
|	SC_TK
		{ $$ = NULL; }
|	error
		{
		  YYERROR_NOW;
		  yyerror ("Class or interface declaration expected");
		}
;

/* 19.7 Shortened from the original:
   modifiers: modifier | modifiers modifier
   modifier: any of public...  */
modifiers:
	MODIFIER_TK
		{
		  $$ = (1 << $1);
		}
|	modifiers MODIFIER_TK
		{
		  int acc = (1 << $2);
		  if ($$ & acc)
		    parse_error_context 
		      (ctxp->modifier_ctx [$2], "Modifier `%s' declared twice",
		       java_accstring_lookup (acc));
		  else
		    {
		      $$ |= acc;
		    }
		}
;

/* 19.8.1 Production from $8.1: Class Declaration */
class_declaration:
	modifiers CLASS_TK identifier super interfaces
		{ create_class ($1, $3, $4, $5); }
	class_body
|	CLASS_TK identifier super interfaces 
		{ create_class (0, $2, $3, $4); }
	class_body
|	modifiers CLASS_TK error
		{yyerror ("Missing class name"); RECOVER;}
|	CLASS_TK error
		{yyerror ("Missing class name"); RECOVER;}
|       CLASS_TK identifier error
		{
		  if (!ctxp->class_err) yyerror ("'{' expected"); 
		  DRECOVER(class1);
		}
|       modifiers CLASS_TK identifier error
		{if (!ctxp->class_err) yyerror ("'{' expected"); RECOVER;}
;

super:
		{ $$ = NULL; }
|	EXTENDS_TK class_type
		{ $$ = $2; }
|	EXTENDS_TK class_type error
		{yyerror ("'{' expected"); ctxp->class_err=1;}
|	EXTENDS_TK error
		{yyerror ("Missing super class name"); ctxp->class_err=1;}
;

interfaces:
		{ $$ = NULL_TREE; }
|	IMPLEMENTS_TK interface_type_list
		{ $$ = $2; }
|	IMPLEMENTS_TK error
		{
		  ctxp->class_err=1;
		  yyerror ("Missing interface name"); 
		}
;

interface_type_list:
	interface_type
		{ 
		  ctxp->interface_number = 1;
		  $$ = build_tree_list ($1, NULL_TREE);
		}
|	interface_type_list C_TK interface_type
		{ 
		  ctxp->interface_number++;
		  $$ = chainon ($1, build_tree_list ($3, NULL_TREE));
		}
|	interface_type_list C_TK error
		{yyerror ("Missing interface name"); RECOVER;}
;

class_body:
	OCB_TK CCB_TK
		{ 
		  /* Store the location of the `}' when doing xrefs */
		  if (flag_emit_xref)
		    DECL_END_SOURCE_LINE (GET_CPC ()) = 
		      EXPR_WFL_ADD_COL ($2.location, 1);
		  $$ = GET_CPC ();
		}
|	OCB_TK class_body_declarations CCB_TK
		{ 
		  /* Store the location of the `}' when doing xrefs */
		  if (flag_emit_xref)
		    DECL_END_SOURCE_LINE (GET_CPC ()) = 
		      EXPR_WFL_ADD_COL ($3.location, 1);
		  $$ = GET_CPC ();
		}
;

class_body_declarations:
	class_body_declaration
|	class_body_declarations class_body_declaration
;

class_body_declaration:
	class_member_declaration
|	static_initializer
|	constructor_declaration
|	block			/* Added, JDK1.1, instance initializer */
		{
		  TREE_CHAIN ($1) = CPC_INSTANCE_INITIALIZER_STMT (ctxp);
		  SET_CPC_INSTANCE_INITIALIZER_STMT (ctxp, $1);
		}
;

class_member_declaration:
	field_declaration
|	field_declaration SC_TK
		{ $$ = $1; }
|	method_declaration
|	class_declaration	/* Added, JDK1.1 inner classes */
		{ end_class_declaration (1); }
|	interface_declaration	/* Added, JDK1.1 inner interfaces */
		{ end_class_declaration (1); }
;

/* 19.8.2 Productions from 8.3: Field Declarations  */
field_declaration:
	type variable_declarators SC_TK
		{ register_fields (0, $1, $2); }
|	modifiers type variable_declarators SC_TK
		{
		  check_modifiers 
		    ("Illegal modifier `%s' for field declaration",
		     $1, FIELD_MODIFIERS);
		  check_modifiers_consistency ($1);
		  register_fields ($1, $2, $3);
		}
;

variable_declarators:
	/* Should we use build_decl_list () instead ? FIXME */
	variable_declarator	/* Default rule */
|	variable_declarators C_TK variable_declarator
		{ $$ = chainon ($1, $3); }
|	variable_declarators C_TK error
		{yyerror ("Missing term"); RECOVER;}
;

variable_declarator:
	variable_declarator_id
		{ $$ = build_tree_list ($1, NULL_TREE); }
|	variable_declarator_id ASSIGN_TK variable_initializer
		{ 
		  if (java_error_count)
		    $3 = NULL_TREE;
		  $$ = build_tree_list 
		    ($1, build_assignment ($2.token, $2.location, $1, $3));
		}
|	variable_declarator_id ASSIGN_TK error
		{
		  yyerror ("Missing variable initializer");
		  $$ = build_tree_list ($1, NULL_TREE);
		  RECOVER;
		}
|	variable_declarator_id ASSIGN_TK variable_initializer error
		{
		  yyerror ("';' expected");
		  $$ = build_tree_list ($1, NULL_TREE);
		  RECOVER;
		}
;

variable_declarator_id:
	identifier
|	variable_declarator_id OSB_TK CSB_TK
		{ $$ = build_unresolved_array_type ($1); }
|	identifier error
		{yyerror ("Invalid declaration"); DRECOVER(vdi);}
|	variable_declarator_id OSB_TK error
		{yyerror ("']' expected"); DRECOVER(vdi);}
|	variable_declarator_id CSB_TK error
		{yyerror ("Unbalanced ']'"); DRECOVER(vdi);}
;

variable_initializer:
	expression
|	array_initializer
;

/* 19.8.3 Productions from 8.4: Method Declarations  */
method_declaration:
	method_header 
		{
		  current_function_decl = $1;
		  if (current_function_decl
		      && TREE_CODE (current_function_decl) == FUNCTION_DECL)
		    source_start_java_method (current_function_decl);
		  else
		    current_function_decl = NULL_TREE;
		}
	method_body
		{ finish_method_declaration ($3); }
|	method_header error
		{YYNOT_TWICE yyerror ("'{' expected"); RECOVER;}
;

method_header:	
	type method_declarator throws
		{ $$ = method_header (0, $1, $2, $3); }
|	VOID_TK method_declarator throws
		{ $$ = method_header (0, void_type_node, $2, $3); }
|	modifiers type method_declarator throws
		{ $$ = method_header ($1, $2, $3, $4); }
|	modifiers VOID_TK method_declarator throws
		{ $$ = method_header ($1, void_type_node, $3, $4); }
|	type error
		{
		  yyerror ("Invalid method declaration, method name required");
		  RECOVER;
		}
|	modifiers type error
		{RECOVER;}
|	VOID_TK error
		{yyerror ("Identifier expected"); RECOVER;}
|	modifiers VOID_TK error
		{yyerror ("Identifier expected"); RECOVER;}
|	modifiers error
		{
		  yyerror ("Invalid method declaration, return type required");
		  RECOVER;
		}
;

method_declarator:
	identifier OP_TK CP_TK
		{ 
		  ctxp->formal_parameter_number = 0;
		  $$ = method_declarator ($1, NULL_TREE);
		}
|	identifier OP_TK formal_parameter_list CP_TK
		{ $$ = method_declarator ($1, $3); }
|	method_declarator OSB_TK CSB_TK
		{
		  EXPR_WFL_LINECOL (wfl_operator) = $2.location;
		  TREE_PURPOSE ($1) = 
		    build_unresolved_array_type (TREE_PURPOSE ($1));
		  parse_warning_context 
		    (wfl_operator, 
		     "Discouraged form of returned type specification");
		}
|	identifier OP_TK error
		{yyerror ("')' expected"); DRECOVER(method_declarator);}
|	method_declarator OSB_TK error
		{yyerror ("']' expected"); RECOVER;}
;

formal_parameter_list:
	formal_parameter
		{
		  ctxp->formal_parameter_number = 1;
		}
|	formal_parameter_list C_TK formal_parameter
		{
		  ctxp->formal_parameter_number += 1;
		  $$ = chainon ($1, $3);
		}
|	formal_parameter_list C_TK error
		{ yyerror ("Missing formal parameter term"); RECOVER; }
;

formal_parameter:
	type variable_declarator_id
		{
		  $$ = build_tree_list ($2, $1);
		}
|	final type variable_declarator_id /* Added, JDK1.1 final parms */
		{ 
		  $$ = build_tree_list ($3, $2);
		  ARG_FINAL_P ($$) = 1;
		}
|	type error
		{
		  yyerror ("Missing identifier"); RECOVER;
		  $$ = NULL_TREE;
		}
|	final type error
		{
		  yyerror ("Missing identifier"); RECOVER;
		  $$ = NULL_TREE;
		}
;

final:
	modifiers
		{
		  check_modifiers ("Illegal modifier `%s'. Only `final' was expected here",
				   $1, ACC_FINAL);
		  if ($1 != ACC_FINAL)
		    MODIFIER_WFL (FINAL_TK) = build_wfl_node (NULL_TREE);
		}
;

throws:
		{ $$ = NULL_TREE; }
|	THROWS_TK class_type_list
		{ $$ = $2; }
|	THROWS_TK error
		{yyerror ("Missing class type term"); RECOVER;}
;

class_type_list:
	class_type
		{ $$ = build_tree_list ($1, $1); }
|	class_type_list C_TK class_type
		{ $$ = tree_cons ($3, $3, $1); }
|	class_type_list C_TK error
		{yyerror ("Missing class type term"); RECOVER;}
;

method_body:
	block
|	block SC_TK
|	SC_TK
		{ $$ = NULL_TREE; } /* Probably not the right thing to do. */
;

/* 19.8.4 Productions from 8.5: Static Initializers  */
static_initializer:
	static block
		{
		  TREE_CHAIN ($2) = CPC_STATIC_INITIALIZER_STMT (ctxp);
		  SET_CPC_STATIC_INITIALIZER_STMT (ctxp, $2);
		}
|	static block SC_TK	/* Shouldn't be here. FIXME */
		{
		  TREE_CHAIN ($2) = CPC_STATIC_INITIALIZER_STMT (ctxp);
		  SET_CPC_STATIC_INITIALIZER_STMT (ctxp, $2);
		}
;

static:				/* Test lval.sub_token here */
	modifiers
		{
		  check_modifiers ("Illegal modifier `%s' for static initializer", $1, ACC_STATIC);
		  /* Can't have a static initializer in an innerclass */
		  if ($1 | ACC_STATIC &&
		      GET_CPC_LIST () && !TOPLEVEL_CLASS_DECL_P (GET_CPC ()))
		    parse_error_context 
		      (MODIFIER_WFL (STATIC_TK),
		       "Can't define static initializer in class `%s'. Static initializer can only be defined in top-level classes",
		       IDENTIFIER_POINTER (DECL_NAME (GET_CPC ())));
		  SOURCE_FRONTEND_DEBUG (("Modifiers: %d", $1));
		}
;

/* 19.8.5 Productions from 8.6: Constructor Declarations  */
constructor_declaration:
	constructor_header
		{
		  current_function_decl = $1;
		  source_start_java_method (current_function_decl);
		}
	constructor_body
		{ finish_method_declaration ($3); }
;

constructor_header:
	constructor_declarator throws
		{ $$ = method_header (0, NULL_TREE, $1, $2); }
|	modifiers constructor_declarator throws
		{ $$ = method_header ($1, NULL_TREE, $2, $3); }
;

constructor_declarator:
	simple_name OP_TK CP_TK
		{ 
		  ctxp->formal_parameter_number = 0;  
		  $$ = method_declarator ($1, NULL_TREE);
		}
|	simple_name OP_TK formal_parameter_list CP_TK
		{ $$ = method_declarator ($1, $3); }
;

constructor_body:
	/* Unlike regular method, we always need a complete (empty)
	   body so we can safely perform all the required code
	   addition (super invocation and field initialization) */
	block_begin constructor_block_end
		{ 
		  BLOCK_EXPR_BODY ($2) = empty_stmt_node;
		  $$ = $2;
		}
|	block_begin explicit_constructor_invocation constructor_block_end
		{ $$ = $3; }
|	block_begin block_statements constructor_block_end
		{ $$ = $3; }
|       block_begin explicit_constructor_invocation block_statements constructor_block_end
		{ $$ = $4; }
;

constructor_block_end:
	block_end
|	block_end SC_TK

/* Error recovery for that rule moved down expression_statement: rule.  */
explicit_constructor_invocation:
	this_or_super OP_TK CP_TK SC_TK
		{ 
		  $$ = build_method_invocation ($1, NULL_TREE); 
		  $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $$);
		  $$ = java_method_add_stmt (current_function_decl, $$);
		}
|	this_or_super OP_TK argument_list CP_TK SC_TK
		{ 
		  $$ = build_method_invocation ($1, $3); 
		  $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $$);
		  $$ = java_method_add_stmt (current_function_decl, $$);
		}
        /* Added, JDK1.1 inner classes. Modified because the rule
	   'primary' couldn't work.  */
|	name DOT_TK SUPER_TK OP_TK argument_list CP_TK SC_TK
		{$$ = parse_jdk1_1_error ("explicit constructor invocation"); }
|	name DOT_TK SUPER_TK OP_TK CP_TK SC_TK
		{$$ = parse_jdk1_1_error ("explicit constructor invocation"); }
;

this_or_super:			/* Added, simplifies error diagnostics */
	THIS_TK
		{
		  tree wfl = build_wfl_node (this_identifier_node);
		  EXPR_WFL_LINECOL (wfl) = $1.location;
		  $$ = wfl;
		}
|	SUPER_TK
		{
		  tree wfl = build_wfl_node (super_identifier_node);
		  EXPR_WFL_LINECOL (wfl) = $1.location;
		  $$ = wfl;
		}
;

/* 19.9 Productions from 9: Interfaces  */
/* 19.9.1 Productions from 9.1: Interfaces Declarations  */
interface_declaration:
	INTERFACE_TK identifier
		{ create_interface (0, $2, NULL_TREE); }
	interface_body
|	modifiers INTERFACE_TK identifier
		{ create_interface ($1, $3, NULL_TREE); }
	interface_body
|	INTERFACE_TK identifier extends_interfaces
		{ create_interface (0, $2, $3);	}
	interface_body
|	modifiers INTERFACE_TK identifier extends_interfaces
		{ create_interface ($1, $3, $4); }
	interface_body
|	INTERFACE_TK identifier error
		{yyerror ("'{' expected"); RECOVER;}
|	modifiers INTERFACE_TK identifier error
		{yyerror ("'{' expected"); RECOVER;}
;

extends_interfaces:
	EXTENDS_TK interface_type
		{ 
		  ctxp->interface_number = 1;
		  $$ = build_tree_list ($2, NULL_TREE);
		}
|	extends_interfaces C_TK interface_type
		{ 
		  ctxp->interface_number++;
		  $$ = chainon ($1, build_tree_list ($3, NULL_TREE));
		}
|	EXTENDS_TK error
		{yyerror ("Invalid interface type"); RECOVER;}
|	extends_interfaces C_TK error
		{yyerror ("Missing term"); RECOVER;}
;

interface_body:
	OCB_TK CCB_TK
		{ $$ = NULL_TREE; }
|	OCB_TK interface_member_declarations CCB_TK
		{ $$ = NULL_TREE; }
;

interface_member_declarations:
	interface_member_declaration
|	interface_member_declarations interface_member_declaration
;

interface_member_declaration:
	constant_declaration
|	abstract_method_declaration
|	class_declaration	/* Added, JDK1.1 inner classes */
		{ end_class_declaration (1); }
|	interface_declaration	/* Added, JDK1.1 inner interfaces */
		{ end_class_declaration (1); }
;

constant_declaration:
	field_declaration
;

abstract_method_declaration:
	method_header SC_TK
		{ 
		  check_abstract_method_header ($1);
		  current_function_decl = NULL_TREE; /* FIXME ? */
		}
|	method_header error
		{yyerror ("';' expected"); RECOVER;}
;

/* 19.10 Productions from 10: Arrays  */
array_initializer:
	OCB_TK CCB_TK
		{ $$ = build_new_array_init ($1.location, NULL_TREE); }
|	OCB_TK variable_initializers CCB_TK
		{ $$ = build_new_array_init ($1.location, $2); }
|	OCB_TK variable_initializers C_TK CCB_TK
		{ $$ = build_new_array_init ($1.location, $2); }
;

variable_initializers:
	variable_initializer
		{ 
		  $$ = tree_cons (maybe_build_array_element_wfl ($1), 
				  $1, NULL_TREE);
		}
|	variable_initializers C_TK variable_initializer
		{
		  $$ = tree_cons (maybe_build_array_element_wfl ($3), $3, $1);
		}
|	variable_initializers C_TK error
		{yyerror ("Missing term"); RECOVER;}
;

/* 19.11 Production from 14: Blocks and Statements  */
block:
	OCB_TK CCB_TK
		{ 
		  /* Store the location of the `}' when doing xrefs */
		  if (current_function_decl && flag_emit_xref)
		    DECL_END_SOURCE_LINE (current_function_decl) = 
		      EXPR_WFL_ADD_COL ($2.location, 1);
		  $$ = empty_stmt_node; 
		}
|	block_begin block_statements block_end
		{ $$ = $3; }
;

block_begin:
	OCB_TK
		{ enter_block (); }
;

block_end:
	CCB_TK
		{ 
		  maybe_absorb_scoping_blocks ();
		  /* Store the location of the `}' when doing xrefs */
		  if (current_function_decl && flag_emit_xref)
		    DECL_END_SOURCE_LINE (current_function_decl) = 
		      EXPR_WFL_ADD_COL ($1.location, 1);		  
		  $$ = exit_block ();
		}
;

block_statements:
	block_statement
|	block_statements block_statement
;

block_statement:
	local_variable_declaration_statement
|	statement
		{ java_method_add_stmt (current_function_decl, $1); }
|	class_declaration	/* Added, JDK1.1 local classes */
		{ 
		  LOCAL_CLASS_P (TREE_TYPE (GET_CPC ())) = 1;
		  end_class_declaration (1);
		}
;

local_variable_declaration_statement:
	local_variable_declaration SC_TK /* Can't catch missing ';' here */
;

local_variable_declaration:
	type variable_declarators
		{ declare_local_variables (0, $1, $2); }
|	final type variable_declarators /* Added, JDK1.1 final locals */
		{ declare_local_variables ($1, $2, $3); }
;

statement:
	statement_without_trailing_substatement
|	labeled_statement
|	if_then_statement
|	if_then_else_statement
|	while_statement
|	for_statement
		{ $$ = exit_block (); }
;

statement_nsi:
	statement_without_trailing_substatement
|	labeled_statement_nsi
|	if_then_else_statement_nsi
|	while_statement_nsi
|	for_statement_nsi
		{ $$ = exit_block (); }
;

statement_without_trailing_substatement:
	block
|	empty_statement
|	expression_statement
|	switch_statement
|	do_statement
|	break_statement
|	continue_statement
|	return_statement
|	synchronized_statement
|	throw_statement
|	try_statement
;

empty_statement:
	SC_TK
		{ $$ = empty_stmt_node; }
;

label_decl:
	identifier REL_CL_TK
		{
		  $$ = build_labeled_block (EXPR_WFL_LINECOL ($1), 
					    EXPR_WFL_NODE ($1));
		  pushlevel (2);
		  push_labeled_block ($$);
		  PUSH_LABELED_BLOCK ($$);
		}
;

labeled_statement:
	label_decl statement
		{ $$ = finish_labeled_statement ($1, $2); }
|	identifier error
		{yyerror ("':' expected"); RECOVER;}
;

labeled_statement_nsi:
	label_decl statement_nsi
		{ $$ = finish_labeled_statement ($1, $2); }
;

/* We concentrate here a bunch of error handling rules that we couldn't write
   earlier, because expression_statement catches a missing ';'.  */
expression_statement:
	statement_expression SC_TK
		{
		  /* We have a statement. Generate a WFL around it so
		     we can debug it */
		  $$ = build_expr_wfl ($1, input_filename, lineno, 0);
		  /* We know we have a statement, so set the debug
                     info to be eventually generate here. */
		  $$ = JAVA_MAYBE_GENERATE_DEBUG_INFO ($$);
		}
|	error SC_TK 
		{
		  if (ctxp->prevent_ese != lineno)
		    yyerror ("Invalid expression statement");
		  DRECOVER (expr_stmt);
		}
|	error OCB_TK
		{
		  if (ctxp->prevent_ese != lineno)
		    yyerror ("Invalid expression statement");
		  DRECOVER (expr_stmt);
		}
|	error CCB_TK
		{
		  if (ctxp->prevent_ese != lineno)
		    yyerror ("Invalid expression statement");
		  DRECOVER (expr_stmt);
		}
|       this_or_super OP_TK error
		{yyerror ("')' expected"); RECOVER;}
|       this_or_super OP_TK CP_TK error
		{
		  parse_ctor_invocation_error ();
		  RECOVER;
		}
|       this_or_super OP_TK argument_list error
		{yyerror ("')' expected"); RECOVER;}
|       this_or_super OP_TK argument_list CP_TK error
		{
		  parse_ctor_invocation_error ();
		  RECOVER;
		}
|	name DOT_TK SUPER_TK error
		{yyerror ("'(' expected"); RECOVER;}
|	name DOT_TK SUPER_TK OP_TK error
		{yyerror ("')' expected"); RECOVER;}
|	name DOT_TK SUPER_TK OP_TK argument_list error
		{yyerror ("')' expected"); RECOVER;}
|	name DOT_TK SUPER_TK OP_TK argument_list CP_TK error
		{yyerror ("';' expected"); RECOVER;}
|	name DOT_TK SUPER_TK OP_TK CP_TK error
		{yyerror ("';' expected"); RECOVER;}
;

statement_expression: 
	assignment
|	pre_increment_expression
|	pre_decrement_expression
|	post_increment_expression
|	post_decrement_expression
|	method_invocation
|	class_instance_creation_expression
;

if_then_statement:
	IF_TK OP_TK expression CP_TK statement
		{ 
		  $$ = build_if_else_statement ($2.location, $3, 
						$5, NULL_TREE);
		}
|	IF_TK error
		{yyerror ("'(' expected"); RECOVER;}
|	IF_TK OP_TK error
		{yyerror ("Missing term"); RECOVER;}
|	IF_TK OP_TK expression error
		{yyerror ("')' expected"); RECOVER;}
;

if_then_else_statement:
	IF_TK OP_TK expression CP_TK statement_nsi ELSE_TK statement
		{ $$ = build_if_else_statement ($2.location, $3, $5, $7); }
;

if_then_else_statement_nsi:
	IF_TK OP_TK expression CP_TK statement_nsi ELSE_TK statement_nsi
		{ $$ = build_if_else_statement ($2.location, $3, $5, $7); }
;

switch_statement:
	switch_expression
		{
		  enter_block ();
		}
	switch_block
		{ 
		  /* Make into "proper list" of COMPOUND_EXPRs.
		     I.e. make the last statment also have its own
		     COMPOUND_EXPR. */
		  maybe_absorb_scoping_blocks ();
		  TREE_OPERAND ($1, 1) = exit_block ();
		  $$ = build_debugable_stmt (EXPR_WFL_LINECOL ($1), $1);
		}
;

switch_expression:
	SWITCH_TK OP_TK expression CP_TK
		{ 
		  $$ = build (SWITCH_EXPR, NULL_TREE, $3, NULL_TREE);
		  EXPR_WFL_LINECOL ($$) = $2.location;
		}
|	SWITCH_TK error
		{yyerror ("'(' expected"); RECOVER;}
|	SWITCH_TK OP_TK error
		{yyerror ("Missing term or ')'"); DRECOVER(switch_statement);}
|	SWITCH_TK OP_TK expression CP_TK error
		{yyerror ("'{' expected"); RECOVER;}
;

/* Default assignment is there to avoid type node on switch_block
   node. */

switch_block:
	OCB_TK CCB_TK
		{ $$ = NULL_TREE; }
|	OCB_TK switch_labels CCB_TK
		{ $$ = NULL_TREE; }
|	OCB_TK switch_block_statement_groups CCB_TK
		{ $$ = NULL_TREE; }
|	OCB_TK switch_block_statement_groups switch_labels CCB_TK
		{ $$ = NULL_TREE; }
;

switch_block_statement_groups: 
	switch_block_statement_group
|	switch_block_statement_groups switch_block_statement_group
;

switch_block_statement_group:
	switch_labels block_statements
;

switch_labels:
	switch_label
|	switch_labels switch_label
;

switch_label:
	CASE_TK constant_expression REL_CL_TK
		{ 
		  tree lab = build1 (CASE_EXPR, NULL_TREE, $2);
		  EXPR_WFL_LINECOL (lab) = $1.location;
		  java_method_add_stmt (current_function_decl, lab);
		}
|	DEFAULT_TK REL_CL_TK
		{ 
		  tree lab = build1 (DEFAULT_EXPR, NULL_TREE, NULL_TREE);
		  EXPR_WFL_LINECOL (lab) = $1.location;
		  java_method_add_stmt (current_function_decl, lab);
		}
|	CASE_TK error
		{yyerror ("Missing or invalid constant expression"); RECOVER;}
|	CASE_TK constant_expression error
		{yyerror ("':' expected"); RECOVER;}
|	DEFAULT_TK error
		{yyerror ("':' expected"); RECOVER;}
;

while_expression:
	WHILE_TK OP_TK expression CP_TK
		{ 
		  tree body = build_loop_body ($2.location, $3, 0);
		  $$ = build_new_loop (body);
		}
;

while_statement:
	while_expression statement
		{ $$ = finish_loop_body (0, NULL_TREE, $2, 0); }
|	WHILE_TK error
		{YYERROR_NOW; yyerror ("'(' expected"); RECOVER;}
|	WHILE_TK OP_TK error
		{yyerror ("Missing term and ')' expected"); RECOVER;}
|	WHILE_TK OP_TK expression error
		{yyerror ("')' expected"); RECOVER;}
;

while_statement_nsi:
	while_expression statement_nsi
		{ $$ = finish_loop_body (0, NULL_TREE, $2, 0); }
;

do_statement_begin:
	DO_TK
		{ 
		  tree body = build_loop_body (0, NULL_TREE, 1);
		  $$ = build_new_loop (body);
		}
	/* Need error handing here. FIXME */
;

do_statement: 
	do_statement_begin statement WHILE_TK OP_TK expression CP_TK SC_TK
		{ $$ = finish_loop_body ($4.location, $5, $2, 1); }
;

for_statement:
	for_begin SC_TK expression SC_TK for_update CP_TK statement
		{ $$ = finish_for_loop (EXPR_WFL_LINECOL ($3), $3, $5, $7); }
|	for_begin SC_TK SC_TK for_update CP_TK statement
		{ 
		  $$ = finish_for_loop (0, NULL_TREE, $4, $6);
		  /* We have not condition, so we get rid of the EXIT_EXPR */
		  LOOP_EXPR_BODY_CONDITION_EXPR (LOOP_EXPR_BODY ($$), 0) = 
		    empty_stmt_node;
		}
|	for_begin SC_TK error
		{yyerror ("Invalid control expression"); RECOVER;}
|	for_begin SC_TK expression SC_TK error
		{yyerror ("Invalid update expression"); RECOVER;}
|	for_begin SC_TK SC_TK error
		{yyerror ("Invalid update expression"); RECOVER;}
;

for_statement_nsi:
	for_begin SC_TK expression SC_TK for_update CP_TK statement_nsi
		{ $$ = finish_for_loop (EXPR_WFL_LINECOL ($3), $3, $5, $7);}
|	for_begin SC_TK SC_TK for_update CP_TK statement_nsi
		{ 
		  $$ = finish_for_loop (0, NULL_TREE, $4, $6);
		  /* We have not condition, so we get rid of the EXIT_EXPR */
		  LOOP_EXPR_BODY_CONDITION_EXPR (LOOP_EXPR_BODY ($$), 0) = 
		    empty_stmt_node;
		}
;

for_header:
	FOR_TK OP_TK
		{ 
		  /* This scope defined for local variable that may be
                     defined within the scope of the for loop */
		  enter_block (); 
		}
|	FOR_TK error
		{yyerror ("'(' expected"); DRECOVER(for_1);}
|	FOR_TK OP_TK error
		{yyerror ("Invalid init statement"); RECOVER;}
;

for_begin:
	for_header for_init
		{ 
		  /* We now declare the loop body. The loop is
                     declared as a for loop. */
		  tree body = build_loop_body (0, NULL_TREE, 0);
		  $$ =  build_new_loop (body);
		  FOR_LOOP_P ($$) = 1;
		  /* The loop is added to the current block the for
                     statement is defined within */
		  java_method_add_stmt (current_function_decl, $$);
		}
;
for_init:			/* Can be empty */
		{ $$ = empty_stmt_node; }
|	statement_expression_list
		{ 
		  /* Init statement recorded within the previously
                     defined block scope */
		  $$ = java_method_add_stmt (current_function_decl, $1);
		}
|	local_variable_declaration
		{ 
		  /* Local variable are recorded within the previously
		     defined block scope */
		  $$ = NULL_TREE;
		}
|	statement_expression_list error
		{yyerror ("';' expected"); DRECOVER(for_init_1);}
;

for_update:			/* Can be empty */
		{$$ = empty_stmt_node;}
|	statement_expression_list
		{ $$ = build_debugable_stmt (BUILD_LOCATION (), $1); }
;

statement_expression_list:
	statement_expression
		{ $$ = add_stmt_to_compound (NULL_TREE, NULL_TREE, $1); }
|	statement_expression_list C_TK statement_expression
		{ $$ = add_stmt_to_compound ($1, NULL_TREE, $3); }
|	statement_expression_list C_TK error
		{yyerror ("Missing term"); RECOVER;}
;

break_statement:
	BREAK_TK SC_TK
		{ $$ = build_bc_statement ($1.location, 1, NULL_TREE); }
|	BREAK_TK identifier SC_TK
		{ $$ = build_bc_statement ($1.location, 1, $2); }
|	BREAK_TK error
		{yyerror ("Missing term"); RECOVER;}
|	BREAK_TK identifier error
		{yyerror ("';' expected"); RECOVER;}
;

continue_statement:
	CONTINUE_TK SC_TK
		{ $$ = build_bc_statement ($1.location, 0, NULL_TREE); }
|       CONTINUE_TK identifier SC_TK
		{ $$ = build_bc_statement ($1.location, 0, $2); }
|	CONTINUE_TK error
		{yyerror ("Missing term"); RECOVER;}
|	CONTINUE_TK identifier error
		{yyerror ("';' expected"); RECOVER;}
;

return_statement:
	RETURN_TK SC_TK
		{ $$ = build_return ($1.location, NULL_TREE); }
|	RETURN_TK expression SC_TK
		{ $$ = build_return ($1.location, $2); }
|	RETURN_TK error
		{yyerror ("Missing term"); RECOVER;}
|	RETURN_TK expression error
		{yyerror ("';' expected"); RECOVER;}
;

throw_statement:
	THROW_TK expression SC_TK
		{ 
		  $$ = build1 (THROW_EXPR, NULL_TREE, $2);
		  EXPR_WFL_LINECOL ($$) = $1.location;
		}
|	THROW_TK error
		{yyerror ("Missing term"); RECOVER;}
|	THROW_TK expression error
		{yyerror ("';' expected"); RECOVER;}
;

synchronized_statement:
	synchronized OP_TK expression CP_TK block
		{ 
		  $$ = build (SYNCHRONIZED_EXPR, NULL_TREE, $3, $5);
		  EXPR_WFL_LINECOL ($$) = 
		    EXPR_WFL_LINECOL (MODIFIER_WFL (SYNCHRONIZED_TK));
		}
|	synchronized OP_TK expression CP_TK error
		{yyerror ("'{' expected"); RECOVER;}
|	synchronized error
		{yyerror ("'(' expected"); RECOVER;}
|	synchronized OP_TK error CP_TK
		{yyerror ("Missing term"); RECOVER;}
|	synchronized OP_TK error
		{yyerror ("Missing term"); RECOVER;}
;

synchronized:
	modifiers
		{
		  check_modifiers (
             "Illegal modifier `%s'. Only `synchronized' was expected here",
				   $1, ACC_SYNCHRONIZED);
		  if ($1 != ACC_SYNCHRONIZED)
		    MODIFIER_WFL (SYNCHRONIZED_TK) = 
		      build_wfl_node (NULL_TREE);
		}
;

try_statement:
	TRY_TK block catches
		{ $$ = build_try_statement ($1.location, $2, $3); }
|	TRY_TK block finally
		{ $$ = build_try_finally_statement ($1.location, $2, $3); }
|	TRY_TK block catches finally
		{ $$ = build_try_finally_statement 
		    ($1.location, build_try_statement ($1.location,
						       $2, $3), $4);
		}
|	TRY_TK error
		{yyerror ("'{' expected"); DRECOVER (try_statement);}
;

catches:
	catch_clause
|	catches catch_clause
		{ 
		  TREE_CHAIN ($2) = $1;
		  $$ = $2;
		}
;

catch_clause:
	catch_clause_parameter block
		{ 
		  java_method_add_stmt (current_function_decl, $2);
		  exit_block ();
		  $$ = $1;
		}

catch_clause_parameter:
	CATCH_TK OP_TK formal_parameter CP_TK
		{ 
		  /* We add a block to define a scope for
		     formal_parameter (CCBP). The formal parameter is
		     declared initialized by the appropriate function
		     call */
		  tree ccpb = enter_block ();
		  tree init = build_assignment (ASSIGN_TK, $2.location, 
						TREE_PURPOSE ($3), 
						soft_exceptioninfo_call_node);
		  declare_local_variables (0, TREE_VALUE ($3),
					   build_tree_list (TREE_PURPOSE ($3),
							    init));
		  $$ = build1 (CATCH_EXPR, NULL_TREE, ccpb);
		  EXPR_WFL_LINECOL ($$) = $1.location;
		}
|	CATCH_TK error
		{yyerror ("'(' expected"); RECOVER; $$ = NULL_TREE;}
|	CATCH_TK OP_TK error 
		{
		  yyerror ("Missing term or ')' expected"); 
		  RECOVER; $$ = NULL_TREE;
		}
|	CATCH_TK OP_TK error CP_TK /* That's for () */
		{yyerror ("Missing term"); RECOVER; $$ = NULL_TREE;}
;

finally:
	FINALLY_TK block
		{ $$ = $2; }
|	FINALLY_TK error
		{yyerror ("'{' expected"); RECOVER; }
;

/* 19.12 Production from 15: Expressions  */
primary:
	primary_no_new_array
|	array_creation_expression
;

primary_no_new_array:
	literal
|	THIS_TK
		{ $$ = build_this ($1.location); }
|	OP_TK expression CP_TK
		{$$ = $2;}
|	class_instance_creation_expression
|	field_access
|	method_invocation
|	array_access
|	type_literals
        /* Added, JDK1.1 inner classes. Documentation is wrong
           refering to a 'ClassName' (class_name) rule that doesn't
           exist. Used name: instead.  */
|	name DOT_TK THIS_TK
		{ 
		  tree wfl = build_wfl_node (this_identifier_node);
		  $$ = make_qualified_primary ($1, wfl, EXPR_WFL_LINECOL ($1));
		}
|	OP_TK expression error 
		{yyerror ("')' expected"); RECOVER;}
|	name DOT_TK error
		{yyerror ("'class' or 'this' expected" ); RECOVER;}
|	primitive_type DOT_TK error
		{yyerror ("'class' expected" ); RECOVER;}
|	VOID_TK DOT_TK error
		{yyerror ("'class' expected" ); RECOVER;}
;

/* Added, JDK1.1 type literals. We can't use `type' directly, so we
   broke the rule down a bit. */

array_type_literal:
	primitive_type OSB_TK CSB_TK
		{ 
		  $$ = build_java_array_type ($1, -1);
		  CLASS_LOADED_P ($$) = 1;
		}
|	name OSB_TK CSB_TK
		{ $$ = build_unresolved_array_type ($1); }
/* This triggers two reduce/reduce conflict between array_type_literal and
   dims. FIXME.
|	array_type OSB_TK CSB_TK
		{ $$ = build_unresolved_array_type ($1); }
*/
;

type_literals:
	name DOT_TK CLASS_TK
		{ $$ = build_incomplete_class_ref ($2.location, $1); }
|	array_type_literal DOT_TK CLASS_TK
		{ $$ = build_incomplete_class_ref ($2.location, $1); }
|	primitive_type DOT_TK CLASS_TK
		{ $$ = build_class_ref ($1); }
|	VOID_TK DOT_TK CLASS_TK
		{ $$ = build_class_ref (void_type_node); }
;

class_instance_creation_expression:
	NEW_TK class_type OP_TK argument_list CP_TK
		{ $$ = build_new_invocation ($2, $4); }
|	NEW_TK class_type OP_TK CP_TK
		{ $$ = build_new_invocation ($2, NULL_TREE); }
|	anonymous_class_creation
        /* Added, JDK1.1 inner classes, modified to use name or
	   primary instead of primary solely which couldn't work in
	   all situations.  */
|	something_dot_new identifier OP_TK CP_TK
		{ 
		  tree ctor = build_new_invocation ($2, NULL_TREE);
		  $$ = make_qualified_primary ($1, ctor, 
					       EXPR_WFL_LINECOL ($1));
		}
|	something_dot_new identifier OP_TK CP_TK class_body
|	something_dot_new identifier OP_TK argument_list CP_TK
		{ 
		  tree ctor = build_new_invocation ($2, $4);
		  $$ = make_qualified_primary ($1, ctor, 
					       EXPR_WFL_LINECOL ($1));
		}
|	something_dot_new identifier OP_TK argument_list CP_TK class_body
|	NEW_TK error SC_TK 
		{yyerror ("'(' expected"); DRECOVER(new_1);}
|	NEW_TK class_type error
		{yyerror ("'(' expected"); RECOVER;}
|	NEW_TK class_type OP_TK error
		{yyerror ("')' or term expected"); RECOVER;}
|	NEW_TK class_type OP_TK argument_list error
		{yyerror ("')' expected"); RECOVER;}
|	something_dot_new error
		{YYERROR_NOW; yyerror ("Identifier expected"); RECOVER;}
|	something_dot_new identifier error
		{yyerror ("'(' expected"); RECOVER;}
;

/* Created after JDK1.1 rules originally added to
   class_instance_creation_expression, but modified to use
   'class_type' instead of 'TypeName' (type_name) which is mentionned
   in the documentation but doesn't exist. */

anonymous_class_creation:
	NEW_TK class_type OP_TK argument_list CP_TK 
		{ create_anonymous_class ($1.location, $2); }
        class_body
		{ 
		  tree id = build_wfl_node (DECL_NAME (GET_CPC ()));
		  EXPR_WFL_LINECOL (id) = EXPR_WFL_LINECOL ($2);

		  end_class_declaration (1);

		  /* Now we can craft the new expression */
		  $$ = build_new_invocation (id, $4);

		  /* Note that we can't possibly be here if
		     `class_type' is an interface (in which case the
		     anonymous class extends Object and implements
		     `class_type', hence its constructor can't have
		     arguments.) */

		  /* Otherwise, the innerclass must feature a
		     constructor matching `argument_list'. Anonymous
		     classes are a bit special: it's impossible to
		     define constructor for them, hence constructors
		     must be generated following the hints provided by
		     the `new' expression. Whether a super constructor
		     of that nature exists or not is to be verified
		     later on in verify_constructor_super. 

		     It's during the expansion of a `new' statement
		     refering to an anonymous class that a ctor will
		     be generated for the anonymous class, with the
		     right arguments. */

		}
|	NEW_TK class_type OP_TK CP_TK 
		{ create_anonymous_class ($1.location, $2); }
        class_body         
		{ 
		  tree id = build_wfl_node (DECL_NAME (GET_CPC ()));
		  EXPR_WFL_LINECOL (id) = EXPR_WFL_LINECOL ($2);

		  end_class_declaration (1);

		  /* Now we can craft the new expression. The
                     statement doesn't need to be remember so that a
                     constructor can be generated, since its signature
                     is already known. */
		  $$ = build_new_invocation (id, NULL_TREE);
		}
;

something_dot_new:		/* Added, not part of the specs. */
	name DOT_TK NEW_TK
		{ $$ = $1; }
|	primary DOT_TK NEW_TK
		{ $$ = $1; }
;

argument_list:
	expression
		{ 
		  $$ = tree_cons (NULL_TREE, $1, NULL_TREE);
		  ctxp->formal_parameter_number = 1; 
		}
|	argument_list C_TK expression
		{
		  ctxp->formal_parameter_number += 1;
		  $$ = tree_cons (NULL_TREE, $3, $1);
		}
|	argument_list C_TK error
		{yyerror ("Missing term"); RECOVER;}
;

array_creation_expression:
	NEW_TK primitive_type dim_exprs
		{ $$ = build_newarray_node ($2, $3, 0); }
|	NEW_TK class_or_interface_type dim_exprs
		{ $$ = build_newarray_node ($2, $3, 0); }
|	NEW_TK primitive_type dim_exprs dims
		{ $$ = build_newarray_node ($2, $3, CURRENT_OSB (ctxp));}
|	NEW_TK class_or_interface_type dim_exprs dims
		{ $$ = build_newarray_node ($2, $3, CURRENT_OSB (ctxp));}
        /* Added, JDK1.1 anonymous array. Initial documentation rule
           modified */
|	NEW_TK class_or_interface_type dims array_initializer
		{
		  char *sig;
		  while (CURRENT_OSB (ctxp)--)
		    obstack_1grow (&temporary_obstack, '[');
		  sig = obstack_finish (&temporary_obstack);
		  $$ = build (NEW_ANONYMOUS_ARRAY_EXPR, NULL_TREE,
			      $2, get_identifier (sig), $4);
		}
|	NEW_TK primitive_type dims array_initializer
		{ 
		  tree type = $2;
		  while (CURRENT_OSB (ctxp)--)
		    type = build_java_array_type (type, -1);
		  $$ = build (NEW_ANONYMOUS_ARRAY_EXPR, NULL_TREE, 
			      build_pointer_type (type), NULL_TREE, $4);
		}
|	NEW_TK error CSB_TK
		{yyerror ("'[' expected"); DRECOVER ("]");}
|	NEW_TK error OSB_TK
		{yyerror ("']' expected"); RECOVER;}
;

dim_exprs:
	dim_expr
		{ $$ = build_tree_list (NULL_TREE, $1); }
|	dim_exprs dim_expr
		{ $$ = tree_cons (NULL_TREE, $2, $$); }
;

dim_expr:
	OSB_TK expression CSB_TK
		{ 
		  EXPR_WFL_LINECOL ($2) = $1.location;
		  $$ = $2;
		}
|	OSB_TK expression error
		{yyerror ("']' expected"); RECOVER;}
|	OSB_TK error
		{
		  yyerror ("Missing term");
		  yyerror ("']' expected");
		  RECOVER;
		}
;

dims:				
	OSB_TK CSB_TK
		{ 
		  int allocate = 0;
		  /* If not initialized, allocate memory for the osb
                     numbers stack */
		  if (!ctxp->osb_limit)
		    {
		      allocate = ctxp->osb_limit = 32;
		      ctxp->osb_depth = -1;
		    }
		  /* If capacity overflown, reallocate a bigger chunk */
		  else if (ctxp->osb_depth+1 == ctxp->osb_limit)
		    allocate = ctxp->osb_limit << 1;
		  
		  if (allocate)
		    {
		      allocate *= sizeof (int);
		      if (ctxp->osb_number)
			ctxp->osb_number = (int *)xrealloc (ctxp->osb_number,
							    allocate);
		      else
			ctxp->osb_number = (int *)xmalloc (allocate);
		    }
		  ctxp->osb_depth++;
		  CURRENT_OSB (ctxp) = 1;
		}
|	dims OSB_TK CSB_TK
		{ CURRENT_OSB (ctxp)++; }
|	dims OSB_TK error
		{ yyerror ("']' expected"); RECOVER;}
;

field_access:
	primary DOT_TK identifier
		{ $$ = make_qualified_primary ($1, $3, $2.location); }
		/*  FIXME - REWRITE TO: 
		{ $$ = build_binop (COMPONENT_REF, $2.location, $1, $3); } */
|	SUPER_TK DOT_TK identifier
		{
		  tree super_wfl = 
		    build_wfl_node (super_identifier_node);
		  EXPR_WFL_LINECOL (super_wfl) = $1.location;
		  $$ = make_qualified_name (super_wfl, $3, $2.location);
		}
|	SUPER_TK error
		{yyerror ("Field expected"); DRECOVER (super_field_acces);}
;

method_invocation:
	name OP_TK CP_TK
		{ $$ = build_method_invocation ($1, NULL_TREE); }
|	name OP_TK argument_list CP_TK
		{ $$ = build_method_invocation ($1, $3); }
|	primary DOT_TK identifier OP_TK CP_TK
		{ 
		  if (TREE_CODE ($1) == THIS_EXPR)
		    $$ = build_this_super_qualified_invocation 
		      (1, $3, NULL_TREE, 0, $2.location);
		  else
		    {
		      tree invok = build_method_invocation ($3, NULL_TREE);
		      $$ = make_qualified_primary ($1, invok, $2.location);
		    }
		}
|	primary DOT_TK identifier OP_TK argument_list CP_TK
		{ 
		  if (TREE_CODE ($1) == THIS_EXPR)
		    $$ = build_this_super_qualified_invocation 
		      (1, $3, $5, 0, $2.location);
		  else
		    {
		      tree invok = build_method_invocation ($3, $5);
		      $$ = make_qualified_primary ($1, invok, $2.location);
		    }
		}
|	SUPER_TK DOT_TK identifier OP_TK CP_TK
		{ 
		  $$ = build_this_super_qualified_invocation 
		    (0, $3, NULL_TREE, $1.location, $2.location);
		}
|	SUPER_TK DOT_TK identifier OP_TK argument_list CP_TK
		{
		  $$ = build_this_super_qualified_invocation 
		    (0, $3, $5, $1.location, $2.location);
		}
        /* Screws up thing. I let it here until I'm convinced it can
           be removed. FIXME
|	primary DOT_TK error
		{yyerror ("'(' expected"); DRECOVER(bad);} */
|	SUPER_TK DOT_TK error CP_TK
		{ yyerror ("'(' expected"); DRECOVER (method_invocation); }
|	SUPER_TK DOT_TK error DOT_TK
		{ yyerror ("'(' expected"); DRECOVER (method_invocation); }
;

array_access:
	name OSB_TK expression CSB_TK
		{ $$ = build_array_ref ($2.location, $1, $3); }
|	primary_no_new_array OSB_TK expression CSB_TK
		{ $$ = build_array_ref ($2.location, $1, $3); }
|	name OSB_TK error
		{
		  yyerror ("Missing term and ']' expected");
		  DRECOVER(array_access);
		}
|	name OSB_TK expression error
		{
		  yyerror ("']' expected");
		  DRECOVER(array_access);
		}
|	primary_no_new_array OSB_TK error
		{
		  yyerror ("Missing term and ']' expected");
		  DRECOVER(array_access);
		}
|	primary_no_new_array OSB_TK expression error
		{
		  yyerror ("']' expected");
		  DRECOVER(array_access);
		}
;

postfix_expression:
	primary
|	name
|	post_increment_expression
|	post_decrement_expression
;

post_increment_expression:
	postfix_expression INCR_TK
		{ $$ = build_incdec ($2.token, $2.location, $1, 1); }
;

post_decrement_expression:
	postfix_expression DECR_TK
		{ $$ = build_incdec ($2.token, $2.location, $1, 1); }
;

unary_expression:
	pre_increment_expression
|	pre_decrement_expression
|	PLUS_TK unary_expression
		{$$ = build_unaryop ($1.token, $1.location, $2); }
|	MINUS_TK unary_expression
		{$$ = build_unaryop ($1.token, $1.location, $2); }
|	unary_expression_not_plus_minus
|	PLUS_TK error
		{yyerror ("Missing term"); RECOVER}
|	MINUS_TK error
		{yyerror ("Missing term"); RECOVER}
;

pre_increment_expression:
	INCR_TK unary_expression
		{$$ = build_incdec ($1.token, $1.location, $2, 0); }
|	INCR_TK error
		{yyerror ("Missing term"); RECOVER}
;

pre_decrement_expression:
	DECR_TK unary_expression
		{$$ = build_incdec ($1.token, $1.location, $2, 0); }
|	DECR_TK error
		{yyerror ("Missing term"); RECOVER}
;

unary_expression_not_plus_minus:
	postfix_expression
|	NOT_TK unary_expression
		{$$ = build_unaryop ($1.token, $1.location, $2); }
|	NEG_TK unary_expression
 		{$$ = build_unaryop ($1.token, $1.location, $2); }
|	cast_expression
|       NOT_TK error
		{yyerror ("Missing term"); RECOVER}
|       NEG_TK error
		{yyerror ("Missing term"); RECOVER}
;

cast_expression:		/* Error handling here is potentially weak */
	OP_TK primitive_type dims CP_TK unary_expression
		{ 
		  tree type = $2;
		  while (CURRENT_OSB (ctxp)--)
		    type = build_java_array_type (type, -1);
		  ctxp->osb_depth--;
		  $$ = build_cast ($1.location, type, $5); 
		}
|	OP_TK primitive_type CP_TK unary_expression
		{ $$ = build_cast ($1.location, $2, $4); }
|	OP_TK expression CP_TK unary_expression_not_plus_minus
		{ $$ = build_cast ($1.location, $2, $4); }
|	OP_TK name dims CP_TK unary_expression_not_plus_minus
		{ 
		  const char *ptr;
		  while (CURRENT_OSB (ctxp)--)
		    obstack_1grow (&temporary_obstack, '[');
		  ctxp->osb_depth--;
		  obstack_grow0 (&temporary_obstack, 
				 IDENTIFIER_POINTER (EXPR_WFL_NODE ($2)),
				 IDENTIFIER_LENGTH (EXPR_WFL_NODE ($2)));
		  ptr = obstack_finish (&temporary_obstack);
		  EXPR_WFL_NODE ($2) = get_identifier (ptr);
		  $$ = build_cast ($1.location, $2, $5);
		}
|	OP_TK primitive_type OSB_TK error
		{yyerror ("']' expected, invalid type expression");}
|       OP_TK error
		{
	          if (ctxp->prevent_ese != lineno)
		    yyerror ("Invalid type expression"); RECOVER;
		  RECOVER;
		}
|	OP_TK primitive_type dims CP_TK error
		{yyerror ("Missing term"); RECOVER;}
|	OP_TK primitive_type CP_TK error
		{yyerror ("Missing term"); RECOVER;}
|	OP_TK name dims CP_TK error
		{yyerror ("Missing term"); RECOVER;}
;

multiplicative_expression:
	unary_expression
|	multiplicative_expression MULT_TK unary_expression
		{ 
		  $$ = build_binop (BINOP_LOOKUP ($2.token), 
				    $2.location, $1, $3);
		}
|	multiplicative_expression DIV_TK unary_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	multiplicative_expression REM_TK unary_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	multiplicative_expression MULT_TK error
		{yyerror ("Missing term"); RECOVER;}
|	multiplicative_expression DIV_TK error
		{yyerror ("Missing term"); RECOVER;}
|	multiplicative_expression REM_TK error
		{yyerror ("Missing term"); RECOVER;}
;

additive_expression:
	multiplicative_expression
|	additive_expression PLUS_TK multiplicative_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	additive_expression MINUS_TK multiplicative_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	additive_expression PLUS_TK error
		{yyerror ("Missing term"); RECOVER;}
|	additive_expression MINUS_TK error
		{yyerror ("Missing term"); RECOVER;}
;

shift_expression:
	additive_expression
|	shift_expression LS_TK additive_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	shift_expression SRS_TK additive_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	shift_expression ZRS_TK additive_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	shift_expression LS_TK error
		{yyerror ("Missing term"); RECOVER;}
|	shift_expression SRS_TK error
		{yyerror ("Missing term"); RECOVER;}
|	shift_expression ZRS_TK error
		{yyerror ("Missing term"); RECOVER;}
;

relational_expression:
	shift_expression
|	relational_expression LT_TK shift_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	relational_expression GT_TK shift_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	relational_expression LTE_TK shift_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	relational_expression GTE_TK shift_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	relational_expression INSTANCEOF_TK reference_type
		{ $$ = build_binop (INSTANCEOF_EXPR, $2.location, $1, $3); }
|	relational_expression LT_TK error
		{yyerror ("Missing term"); RECOVER;}
|	relational_expression GT_TK error
		{yyerror ("Missing term"); RECOVER;}
|	relational_expression LTE_TK error
		{yyerror ("Missing term"); RECOVER;}
|	relational_expression GTE_TK error
		{yyerror ("Missing term"); RECOVER;}
|	relational_expression INSTANCEOF_TK error
		{yyerror ("Invalid reference type"); RECOVER;}
;

equality_expression:
	relational_expression
|	equality_expression EQ_TK relational_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	equality_expression NEQ_TK relational_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	equality_expression EQ_TK error
		{yyerror ("Missing term"); RECOVER;}
|	equality_expression NEQ_TK error
		{yyerror ("Missing term"); RECOVER;}
;

and_expression:
	equality_expression
|	and_expression AND_TK equality_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	and_expression AND_TK error
		{yyerror ("Missing term"); RECOVER;}
;

exclusive_or_expression:
	and_expression
|	exclusive_or_expression XOR_TK and_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	exclusive_or_expression XOR_TK error
		{yyerror ("Missing term"); RECOVER;}
;

inclusive_or_expression:
	exclusive_or_expression
|	inclusive_or_expression OR_TK exclusive_or_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	inclusive_or_expression OR_TK error
		{yyerror ("Missing term"); RECOVER;}
;

conditional_and_expression:
	inclusive_or_expression
|	conditional_and_expression BOOL_AND_TK inclusive_or_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	conditional_and_expression BOOL_AND_TK error
		{yyerror ("Missing term"); RECOVER;}
;

conditional_or_expression:
	conditional_and_expression
|	conditional_or_expression BOOL_OR_TK conditional_and_expression
		{
		  $$ = build_binop (BINOP_LOOKUP ($2.token), $2.location,
				    $1, $3); 
		}
|	conditional_or_expression BOOL_OR_TK error
		{yyerror ("Missing term"); RECOVER;}
;

conditional_expression:		/* Error handling here is weak */
	conditional_or_expression
|	conditional_or_expression REL_QM_TK expression REL_CL_TK conditional_expression
		{
		  $$ = build (CONDITIONAL_EXPR, NULL_TREE, $1, $3, $5);
		  EXPR_WFL_LINECOL ($$) = $2.location;
		}
|	conditional_or_expression REL_QM_TK REL_CL_TK error
		{
		  YYERROR_NOW;
		  yyerror ("Missing term");
		  DRECOVER (1);
		}
|	conditional_or_expression REL_QM_TK error
		{yyerror ("Missing term"); DRECOVER (2);}
|	conditional_or_expression REL_QM_TK expression REL_CL_TK error
		{yyerror ("Missing term"); DRECOVER (3);}
;

assignment_expression:
	conditional_expression
|	assignment
;

assignment:
	left_hand_side assignment_operator assignment_expression
		{ $$ = build_assignment ($2.token, $2.location, $1, $3); }
|	left_hand_side assignment_operator error
		{
		  if (ctxp->prevent_ese != lineno)
		    yyerror ("Missing term");
		  DRECOVER (assign);
		}
;

left_hand_side:
	name
|	field_access
|	array_access
;

assignment_operator:
	ASSIGN_ANY_TK
|	ASSIGN_TK
;

expression:
	assignment_expression
;

constant_expression:
	expression
;

%%


/* This section of the code deal with save/restoring parser contexts.
   Add mode documentation here. FIXME */

/* Helper function. Create a new parser context. With
   COPY_FROM_PREVIOUS set to a non zero value, content of the previous
   context is copied, otherwise, the new context is zeroed. The newly
   created context becomes the current one.  */

static void
create_new_parser_context (copy_from_previous)
    int copy_from_previous;
{
  struct parser_ctxt *new;

  new =  (struct parser_ctxt *)xmalloc(sizeof (struct parser_ctxt));
  if (copy_from_previous)
    {
      memcpy ((PTR)new, (PTR)ctxp, sizeof (struct parser_ctxt));
      new->saved_data_ctx = 1;
    }
  else
    bzero ((PTR) new, sizeof (struct parser_ctxt));
      
  new->next = ctxp;
  ctxp = new;
}

/* Create a new parser context and make it the current one. */

void
java_push_parser_context ()
{
  create_new_parser_context (0);
  if (ctxp->next)
    {
      ctxp->incomplete_class = ctxp->next->incomplete_class;
      ctxp->gclass_list = ctxp->next->gclass_list;
    }
}  

void 
java_pop_parser_context (generate)
     int generate;
{
  tree current;
  struct parser_ctxt *toFree, *next;

  if (!ctxp)
    return;

  toFree = ctxp;
  next = ctxp->next;
  if (next)
    {
      next->incomplete_class = ctxp->incomplete_class;
      next->gclass_list = ctxp->gclass_list;
      lineno = ctxp->lineno;
      finput = ctxp->finput;
      current_class = ctxp->current_class;
    }

  /* Set the single import class file flag to 0 for the current list
     of imported things */
  for (current = ctxp->import_list; current; current = TREE_CHAIN (current))
    IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (TREE_PURPOSE (current)) = 0;

  /* And restore those of the previous context */
  if ((ctxp = next))		/* Assignment is really meant here */
    for (current = ctxp->import_list; current; current = TREE_CHAIN (current))
      IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (TREE_PURPOSE (current)) = 1;
  
  /* If we pushed a context to parse a class intended to be generated,
     we keep it so we can remember the class. What we could actually
     do is to just update a list of class names.  */
  if (generate)
    {
      toFree->next = ctxp_for_generation;
      ctxp_for_generation = toFree;
    }
  else
    free (toFree);
}

/* Create a parser context for the use of saving some global
   variables.  */

void
java_parser_context_save_global ()
{
  if (!ctxp)
    {
      java_push_parser_context ();
      ctxp->saved_data_ctx = 1;
    }

  /* If this context already stores data, create a new one suitable
     for data storage. */
  else if (ctxp->saved_data)
    create_new_parser_context (1);

  ctxp->finput = finput;
  ctxp->lineno = lineno;
  ctxp->current_class = current_class;
  ctxp->filename = input_filename;
  ctxp->current_function_decl = current_function_decl;
  ctxp->saved_data = 1;
}

/* Restore some global variables from the previous context. Make the
   previous context the current one.  */

void
java_parser_context_restore_global ()
{
  finput = ctxp->finput;
  lineno = ctxp->lineno;
  current_class = ctxp->current_class;
  input_filename = ctxp->filename;
  current_function_decl = ctxp->current_function_decl;
  ctxp->saved_data = 0;
  if (ctxp->saved_data_ctx)
    java_pop_parser_context (0);
}

/* Suspend vital data for the current class/function being parsed so
   that an other class can be parsed. Used to let local/anonymous
   classes be parsed.  */

static void
java_parser_context_suspend ()
{
  /* This makes debugging through java_debug_context easier */
  static char *name = "<inner buffer context>";

  /* Duplicate the previous context, use it to save the globals we're
     interested in */
  create_new_parser_context (1);
  ctxp->current_function_decl = current_function_decl;
  ctxp->current_class = current_class;

  /* Then create a new context which inherits all data from the
     previous one. This will be the new current context  */
  create_new_parser_context (1);

  /* Help debugging */
  ctxp->next->filename = name;
}

/* Resume vital data for the current class/function being parsed so
   that an other class can be parsed. Used to let local/anonymous
   classes be parsed.  The trick is the data storing file position
   informations must be restored to their current value, so parsing
   can resume as if no context was ever saved. */

static void
java_parser_context_resume ()
{
  struct parser_ctxt *old = ctxp;             /* This one is to be discarded */
  struct parser_ctxt *saver = old->next;      /* This one contain saved info */
  struct parser_ctxt *restored = saver->next; /* This one is the old current */

  /* We need to inherit the list of classes to complete/generate */
  restored->incomplete_class = old->incomplete_class;
  restored->gclass_list = old->gclass_list;
  restored->classd_list = old->classd_list;
  restored->class_list = old->class_list;

  /* Restore the current class and function from the saver */
  current_class = saver->current_class;
  current_function_decl = saver->current_function_decl;

  /* Retrive the restored context */
  ctxp = restored;

  /* Re-installed the data for the parsing to carry on */
  bcopy (&old->marker_begining, &ctxp->marker_begining,
	 (size_t)(&ctxp->marker_end - &ctxp->marker_begining));

  /* Buffer context can now be discarded */
  free (saver);
  free (old);
}

/* Add a new anchor node to which all statement(s) initializing static
   and non static initialized upon declaration field(s) will be
   linked.  */

static void
java_parser_context_push_initialized_field ()
{
  tree node;

  node = build_tree_list (NULL_TREE, NULL_TREE);
  TREE_CHAIN (node) = CPC_STATIC_INITIALIZER_LIST (ctxp);
  CPC_STATIC_INITIALIZER_LIST (ctxp) = node;

  node = build_tree_list (NULL_TREE, NULL_TREE);
  TREE_CHAIN (node) = CPC_INITIALIZER_LIST (ctxp);
  CPC_INITIALIZER_LIST (ctxp) = node;

  node = build_tree_list (NULL_TREE, NULL_TREE);
  TREE_CHAIN (node) = CPC_INSTANCE_INITIALIZER_LIST (ctxp);
  CPC_INSTANCE_INITIALIZER_LIST (ctxp) = node;
}

/* Pop the lists of initialized field. If this lists aren't empty,
   remember them so we can use it to create and populate the $finit$
   or <clinit> functions. */

static void
java_parser_context_pop_initialized_field ()
{
  tree stmts;
  tree class_type = TREE_TYPE (GET_CPC ());

  if (CPC_INITIALIZER_LIST (ctxp))
    {
      stmts = CPC_INITIALIZER_STMT (ctxp);
      CPC_INITIALIZER_LIST (ctxp) = TREE_CHAIN (CPC_INITIALIZER_LIST (ctxp));
      if (stmts && !java_error_count)
	TYPE_FINIT_STMT_LIST (class_type) = reorder_static_initialized (stmts);
    }

  if (CPC_STATIC_INITIALIZER_LIST (ctxp))
    {
      stmts = CPC_STATIC_INITIALIZER_STMT (ctxp);
      CPC_STATIC_INITIALIZER_LIST (ctxp) = 
	TREE_CHAIN (CPC_STATIC_INITIALIZER_LIST (ctxp));
      /* Keep initialization in order to enforce 8.5 */
      if (stmts && !java_error_count)
	TYPE_CLINIT_STMT_LIST (class_type) = nreverse (stmts);
    }

  /* JDK 1.1 instance initializers */
  if (CPC_INSTANCE_INITIALIZER_LIST (ctxp))
    {
      stmts = CPC_INSTANCE_INITIALIZER_STMT (ctxp);
      CPC_INSTANCE_INITIALIZER_LIST (ctxp) = 
	TREE_CHAIN (CPC_INSTANCE_INITIALIZER_LIST (ctxp));
      if (stmts && !java_error_count)
	TYPE_II_STMT_LIST (class_type) = nreverse (stmts);
    }
}

static tree
reorder_static_initialized (list)
     tree list;
{
  /* We have to keep things in order. The alias initializer have to
     come first, then the initialized regular field, in reverse to
     keep them in lexical order. */
  tree marker, previous = NULL_TREE;
  for (marker = list; marker; previous = marker, marker = TREE_CHAIN (marker))
    if (TREE_CODE (marker) == TREE_LIST 
	&& !TREE_VALUE (marker) && !TREE_PURPOSE (marker))
      break;
  
  /* No static initialized, the list is fine as is */
  if (!previous)
    list = TREE_CHAIN (marker);

  /* No marker? reverse the whole list */
  else if (!marker)
    list = nreverse (list);

  /* Otherwise, reverse what's after the marker and the new reordered
     sublist will replace the marker. */
  else
    {
      TREE_CHAIN (previous) = NULL_TREE;
      list = nreverse (list);
      list = chainon (TREE_CHAIN (marker), list);
    }
  return list;
}

/* Helper functions to dump the parser context stack.  */

#define TAB_CONTEXT(C) \
  {int i; for (i = 0; i < (C); i++) fputc (' ', stderr);}

static void
java_debug_context_do (tab)
     int tab;
{
  struct parser_ctxt *copy = ctxp;
  while (copy)
    {
      TAB_CONTEXT (tab);
      fprintf (stderr, "ctxt: 0x%0lX\n", (unsigned long)copy);
      TAB_CONTEXT (tab);
      fprintf (stderr, "filename: %s\n", copy->filename);
      TAB_CONTEXT (tab);
      fprintf (stderr, "lineno: %d\n", copy->lineno);
      TAB_CONTEXT (tab);
      fprintf (stderr, "package: %s\n",
	       (copy->package ? 
		IDENTIFIER_POINTER (copy->package) : "<none>"));
      TAB_CONTEXT (tab);
      fprintf (stderr, "context for saving: %d\n", copy->saved_data_ctx);
      TAB_CONTEXT (tab);
      fprintf (stderr, "saved data: %d\n", copy->saved_data);
      copy = copy->next;
      tab += 2;
    }
}

/* Dump the stacked up parser contexts. Intended to be called from a
   debugger.  */

void
java_debug_context ()
{
  java_debug_context_do (0);
}



/* Flag for the error report routine to issue the error the first time
   it's called (overriding the default behavior which is to drop the
   first invocation and honor the second one, taking advantage of a
   richer context.  */
static int force_error = 0;

/* Reporting an constructor invocation error.  */
static void
parse_ctor_invocation_error ()
{
  if (DECL_CONSTRUCTOR_P (current_function_decl))
    yyerror ("Constructor invocation must be first thing in a constructor"); 
  else
    yyerror ("Only constructors can invoke constructors");
}

/* Reporting JDK1.1 features not implemented.  */

static tree
parse_jdk1_1_error (msg)
    const char *msg;
{
  sorry (": `%s' JDK1.1(TM) feature", msg);
  java_error_count++;
  return empty_stmt_node;
}

static int do_warning = 0;

void
yyerror (msg)
     const char *msg;
{
  static java_lc elc;
  static int  prev_lineno;
  static const char *prev_msg;

  int save_lineno;
  char *remainder, *code_from_source;
  extern struct obstack temporary_obstack;
  
  if (!force_error && prev_lineno == lineno)
    return;

  /* Save current error location but report latter, when the context is
     richer.  */
  if (ctxp->java_error_flag == 0)
    {
      ctxp->java_error_flag = 1;
      elc = ctxp->elc;
      /* Do something to use the previous line if we're reaching the
	 end of the file... */
#ifdef VERBOSE_SKELETON
      printf ("* Error detected (%s)\n", (msg ? msg : "(null)"));
#endif
      return;
    }

  /* Ignore duplicate message on the same line. BTW, this is dubious. FIXME */
  if (!force_error && msg == prev_msg && prev_lineno == elc.line)
    return;

  ctxp->java_error_flag = 0;
  if (do_warning)
    java_warning_count++;
  else
    java_error_count++;
  
  if (elc.col == 0 && msg && msg[1] == ';')
    {
      elc.col  = ctxp->p_line->char_col-1;
      elc.line = ctxp->p_line->lineno;
    }

  save_lineno = lineno;
  prev_lineno = lineno = elc.line;
  prev_msg = msg;

  code_from_source = java_get_line_col (ctxp->filename, elc.line, elc.col);
  obstack_grow0 (&temporary_obstack, 
		 code_from_source, strlen (code_from_source));
  remainder = obstack_finish (&temporary_obstack);
  if (do_warning)
    warning ("%s.\n%s", msg, remainder);
  else
    error ("%s.\n%s", msg, remainder);

  /* This allow us to cheaply avoid an extra 'Invalid expression
     statement' error report when errors have been already reported on
     the same line. This occurs when we report an error but don't have
     a synchronization point other than ';', which
     expression_statement is the only one to take care of.  */
  ctxp->prevent_ese = lineno = save_lineno;
}

static void
issue_warning_error_from_context (cl, msg, ap)
     tree cl;
     const char *msg;
     va_list ap;
{
  char *saved, *saved_input_filename;
  char buffer [4096];
  vsprintf (buffer, msg, ap);
  force_error = 1;

  ctxp->elc.line = EXPR_WFL_LINENO (cl);
  ctxp->elc.col  = (EXPR_WFL_COLNO (cl) == 0xfff ? -1 : 
		    (EXPR_WFL_COLNO (cl) == 0xffe ? -2 : EXPR_WFL_COLNO (cl)));

  /* We have a CL, that's a good reason for using it if it contains data */
  saved = ctxp->filename;
  if (TREE_CODE (cl) == EXPR_WITH_FILE_LOCATION && EXPR_WFL_FILENAME_NODE (cl))
    ctxp->filename = EXPR_WFL_FILENAME (cl);
  saved_input_filename = input_filename;
  input_filename = ctxp->filename;
  java_error (NULL);
  java_error (buffer);
  ctxp->filename = saved;
  input_filename = saved_input_filename;
  force_error = 0;
}

/* Issue an error message at a current source line CL */

void
parse_error_context VPARAMS ((tree cl, const char *msg, ...))
{
#ifndef ANSI_PROTOTYPES
  tree cl;
  const char *msg;
#endif
  va_list ap;

  VA_START (ap, msg);
#ifndef ANSI_PROTOTYPES
  cl = va_arg (ap, tree);
  msg = va_arg (ap, const char *);
#endif
  issue_warning_error_from_context (cl, msg, ap);
  va_end (ap);
}

/* Issue a warning at a current source line CL */

static void
parse_warning_context VPARAMS ((tree cl, const char *msg, ...))
{
#ifndef ANSI_PROTOTYPES
  tree cl;
  const char *msg;
#endif
  va_list ap;

  VA_START (ap, msg);
#ifndef ANSI_PROTOTYPES
  cl = va_arg (ap, tree);
  msg = va_arg (ap, const char *);
#endif

  force_error = do_warning = 1;
  issue_warning_error_from_context (cl, msg, ap);
  do_warning = force_error = 0;
  va_end (ap);
}

static tree
find_expr_with_wfl (node)
     tree node;
{
  while (node)
    {
      char code;
      tree to_return;

      switch (TREE_CODE (node))
	{
	case BLOCK:
	  node = BLOCK_EXPR_BODY (node);
	  continue;

	case COMPOUND_EXPR:
	  to_return = find_expr_with_wfl (TREE_OPERAND (node, 0));
	  if (to_return)
	    return to_return;
	  node = TREE_OPERAND (node, 1);
	  continue;

	case LOOP_EXPR:
	  node = TREE_OPERAND (node, 0);
	  continue;
	  
	case LABELED_BLOCK_EXPR:
	  node = TREE_OPERAND (node, 1);
	  continue;

	default:
	  code = TREE_CODE_CLASS (TREE_CODE (node));
	  if (((code == '1') || (code == '2') || (code == 'e'))
	      && EXPR_WFL_LINECOL (node))
	    return node;
	  return NULL_TREE;
	}
    }
  return NULL_TREE;
}

/* Issue a missing return statement error. Uses METHOD to figure the
   last line of the method the error occurs in.  */

static void
missing_return_error (method)
     tree method;
{
  EXPR_WFL_SET_LINECOL (wfl_operator, DECL_SOURCE_LINE_LAST (method), -2);
  parse_error_context (wfl_operator, "Missing return statement");
}

/* Issue an unreachable statement error. From NODE, find the next
   statement to report appropriately.  */
static void
unreachable_stmt_error (node)
     tree node;
{
  /* Browse node to find the next expression node that has a WFL. Use
     the location to report the error */
  if (TREE_CODE (node) == COMPOUND_EXPR)
    node = find_expr_with_wfl (TREE_OPERAND (node, 1));
  else
    node = find_expr_with_wfl (node);

  if (node)
    {
      EXPR_WFL_SET_LINECOL (wfl_operator, EXPR_WFL_LINENO (node), -2);
      parse_error_context (wfl_operator, "Unreachable statement");
    }
  else
    fatal ("Can't get valid statement - unreachable_stmt_error");
}

int
java_report_errors ()
{
  if (java_error_count)
    fprintf (stderr, "%d error%s", 
	     java_error_count, (java_error_count == 1 ? "" : "s"));
  if (java_warning_count)
    fprintf (stderr, "%s%d warning%s", (java_error_count ? ", " : ""),
	     java_warning_count, (java_warning_count == 1 ? "" : "s"));
  if (java_error_count || java_warning_count)
    putc ('\n', stderr);
  return java_error_count;
}

static char *
java_accstring_lookup (flags)
     int flags;
{
  static char buffer [80];
#define COPY_RETURN(S) {strcpy (buffer, S); return buffer;}

  /* Access modifier looked-up first for easier report on forbidden
     access. */
  if (flags & ACC_PUBLIC) COPY_RETURN ("public");
  if (flags & ACC_PRIVATE) COPY_RETURN ("private");
  if (flags & ACC_PROTECTED) COPY_RETURN ("protected");
  if (flags & ACC_STATIC) COPY_RETURN ("static");
  if (flags & ACC_FINAL) COPY_RETURN ("final");
  if (flags & ACC_SYNCHRONIZED) COPY_RETURN ("synchronized");
  if (flags & ACC_VOLATILE) COPY_RETURN ("volatile");
  if (flags & ACC_TRANSIENT) COPY_RETURN ("transient");
  if (flags & ACC_NATIVE) COPY_RETURN ("native");
  if (flags & ACC_INTERFACE) COPY_RETURN ("interface");
  if (flags & ACC_ABSTRACT) COPY_RETURN ("abstract");

  buffer [0] = '\0';
  return buffer;
#undef COPY_RETURN
}

/* Issuing error messages upon redefinition of classes, interfaces or
   variables. */

static void
classitf_redefinition_error (context, id, decl, cl)
     const char *context;
     tree id, decl, cl;
{
  parse_error_context (cl, "%s `%s' already defined in %s:%d", 
		       context, IDENTIFIER_POINTER (id), 
		       DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
  /* Here we should point out where its redefined. It's a unicode. FIXME */
}

static void
variable_redefinition_error (context, name, type, line)
     tree context, name, type;
     int line;
{
  const char *type_name;

  /* Figure a proper name for type. We might haven't resolved it */
  if (TREE_CODE (type) == POINTER_TYPE && !TREE_TYPE (type))
    type_name = IDENTIFIER_POINTER (TYPE_NAME (type));
  else
    type_name = lang_printable_name (type, 0);

  parse_error_context (context,
		       "Variable `%s' is already defined in this method and was declared `%s %s' at line %d", 
		       IDENTIFIER_POINTER (name),
		       type_name, IDENTIFIER_POINTER (name), line);
}

static tree
build_array_from_name (type, type_wfl, name, ret_name)
     tree type, type_wfl, name, *ret_name;
{
  int more_dims = 0;
  const char *string;

  /* Eventually get more dims */
  string = IDENTIFIER_POINTER (name);
  while (string [more_dims] == '[')
    more_dims++;
  
  /* If we have, then craft a new type for this variable */
  if (more_dims)
    {
      name = get_identifier (&string [more_dims]);

      /* If we have a pointer, use its type */
      if (TREE_CODE (type) == POINTER_TYPE)
        type = TREE_TYPE (type);

      /* Building the first dimension of a primitive type uses this
         function */
      if (JPRIMITIVE_TYPE_P (type))
	{
	  type = build_java_array_type (type, -1);
	  CLASS_LOADED_P (type) = 1;
	  more_dims--;
	}
      /* Otherwise, if we have a WFL for this type, use it (the type
         is already an array on an unresolved type, and we just keep
         on adding dimensions) */
      else if (type_wfl)
	type = type_wfl;

      /* Add all the dimensions */
      while (more_dims--)
	type = build_unresolved_array_type (type);

      /* The type may have been incomplete in the first place */
      if (type_wfl)
	type = obtain_incomplete_type (type);
    }

  if (ret_name)
    *ret_name = name;
  return type;
}

/* Build something that the type identifier resolver will identify as
   being an array to an unresolved type. TYPE_WFL is a WFL on a
   identifier. */

static tree
build_unresolved_array_type (type_or_wfl)
     tree type_or_wfl;
{
  const char *ptr;

  /* TYPE_OR_WFL might be an array on a resolved type. In this case,
     just create a array type */
  if (TREE_CODE (type_or_wfl) == RECORD_TYPE)
    {
      tree type = build_java_array_type (type_or_wfl, -1);
      CLASS_LOADED_P (type) = CLASS_LOADED_P (type_or_wfl);
      return type;
    }

  obstack_1grow (&temporary_obstack, '[');
  obstack_grow0 (&temporary_obstack,
		 IDENTIFIER_POINTER (EXPR_WFL_NODE (type_or_wfl)),
		 IDENTIFIER_LENGTH (EXPR_WFL_NODE (type_or_wfl)));
  ptr = obstack_finish (&temporary_obstack);
  return build_expr_wfl (get_identifier (ptr),
			 EXPR_WFL_FILENAME (type_or_wfl),
			 EXPR_WFL_LINENO (type_or_wfl),
			 EXPR_WFL_COLNO (type_or_wfl));
}

static void
parser_add_interface (class_decl, interface_decl, wfl)
     tree class_decl, interface_decl, wfl;
{
  if (maybe_add_interface (TREE_TYPE (class_decl), TREE_TYPE (interface_decl)))
    parse_error_context (wfl, "Interface `%s' repeated",
			 IDENTIFIER_POINTER (DECL_NAME (interface_decl)));
}

/* Bulk of common class/interface checks. Return 1 if an error was
   encountered. TAG is 0 for a class, 1 for an interface.  */

static int
check_class_interface_creation (is_interface, flags, raw_name, qualified_name, decl, cl)
     int is_interface, flags;
     tree raw_name, qualified_name, decl, cl;
{
  tree node;
  int sca = 0;			/* Static class allowed */
  int icaf = 0;			/* Inner class allowed flags */
  int uaaf = CLASS_MODIFIERS;	/* Usually allowed access flags */

  if (!quiet_flag)
    fprintf (stderr, " %s%s %s", 
	     (CPC_INNER_P () ? "inner" : ""),
	     (is_interface ? "interface" : "class"), 
	     IDENTIFIER_POINTER (qualified_name));

  /* Scope of an interface/class type name:
       - Can't be imported by a single type import
       - Can't already exists in the package */
  if (IS_A_SINGLE_IMPORT_CLASSFILE_NAME_P (raw_name)
      && (node = find_name_in_single_imports (raw_name)))
    {
      parse_error_context 
	(cl, "%s name `%s' clashes with imported type `%s'",
	 (is_interface ? "Interface" : "Class"),
	 IDENTIFIER_POINTER (raw_name), IDENTIFIER_POINTER (node));
      return 1;
    }
  if (decl && CLASS_COMPLETE_P (decl))
    {
      classitf_redefinition_error ((is_interface ? "Interface" : "Class"), 
				   qualified_name, decl, cl);
      return 1;
    }

  if (check_inner_class_redefinition (raw_name, cl))
    return 1;

  /* If public, file name should match class/interface name, except
     when dealing with an inner class */
  if (!CPC_INNER_P () && (flags & ACC_PUBLIC ))
    {
      const char *f;

      /* Contains OS dependent assumption on path separator. FIXME */
      for (f = &input_filename [strlen (input_filename)]; 
	   f != input_filename && f[0] != '/' && f[0] != DIR_SEPARATOR;
	   f--)
	;
      if (f[0] == '/' || f[0] == DIR_SEPARATOR)
	f++;
      if (strncmp (IDENTIFIER_POINTER (raw_name), 
		   f , IDENTIFIER_LENGTH (raw_name)) ||
	  f [IDENTIFIER_LENGTH (raw_name)] != '.')
	parse_error_context
	  (cl, "Public %s `%s' must be defined in a file called `%s.java'", 
			     (is_interface ? "interface" : "class"),
			     IDENTIFIER_POINTER (qualified_name),
			     IDENTIFIER_POINTER (raw_name));
    }

  /* Static classes can be declared only in top level classes. Note:
     once static, a inner class is a top level class. */
  if (flags & ACC_STATIC)
    {
      /* Catch the specific error of declaring an class inner class
	 with no toplevel enclosing class. Prevent check_modifiers from
	 complaining a second time */
      if (CPC_INNER_P () && !TOPLEVEL_CLASS_DECL_P (GET_CPC()))
	{
	  parse_error_context (cl, "Inner class `%s' can't be static. Static classes can only occur in interfaces and top-level classes", 
			       IDENTIFIER_POINTER (qualified_name));
	  sca = ACC_STATIC;
	}
      /* Else, in the context of a top-level class declaration, let
         `check_modifiers' do its job, otherwise, give it a go */
      else
	sca = (GET_CPC_LIST () ? ACC_STATIC : 0);
    }

  /* Inner classes can be declared private or protected
     within their enclosing classes. */
  if (CPC_INNER_P ())
    {
      /* A class which is local to a block can't be public, private,
	 protected or static. But it is created final, so allow this
	 one. */
      if (current_function_decl)
	icaf = sca = uaaf = ACC_FINAL;
      else
	{
	  check_modifiers_consistency (flags);
	  icaf = ACC_PRIVATE|ACC_PROTECTED;
	}
    }

  if (is_interface) 
    {
      if (CPC_INNER_P ())
	uaaf = INTERFACE_INNER_MODIFIERS;
      else
	uaaf = INTERFACE_MODIFIERS;
      
      check_modifiers ("Illegal modifier `%s' for interface declaration", 
		       flags, uaaf);
    }
  else
    check_modifiers ((current_function_decl ?
		      "Illegal modifier `%s' for local class declaration" :
		      "Illegal modifier `%s' for class declaration"),
		     flags, uaaf|sca|icaf);
  return 0;
}

static void
make_nested_class_name (cpc_list)
     tree cpc_list;
{
  tree name;

  if (!cpc_list)
    return;
  else
    make_nested_class_name (TREE_CHAIN (cpc_list));

  /* Pick the qualified name when dealing with the first upmost
     enclosing class */
  name = (TREE_CHAIN (cpc_list) ? 
	  TREE_PURPOSE (cpc_list) : DECL_NAME (TREE_VALUE (cpc_list)));
  obstack_grow (&temporary_obstack,
		IDENTIFIER_POINTER (name), IDENTIFIER_LENGTH (name));
  /* Why is NO_DOLLAR_IN_LABEL defined? */
#if 0
#ifdef NO_DOLLAR_IN_LABEL
  fatal ("make_nested_class_name: Can't use '$' as a separator "
	 "for inner classes");
#endif
#endif
  obstack_1grow (&temporary_obstack, '$');
}

/* Can't redefine a class already defined in an earlier scope. */

static int
check_inner_class_redefinition (raw_name, cl)
     tree raw_name, cl;
{
  tree scope_list;

  for (scope_list = GET_CPC_LIST (); scope_list; 
       scope_list = GET_NEXT_ENCLOSING_CPC (scope_list))
    if (raw_name == GET_CPC_UN_NODE (scope_list))
      {
	parse_error_context 
	  (cl, "The class name `%s' is already defined in this scope. An inner class may not have the same simple name as any of its enclosing classes",
	   IDENTIFIER_POINTER (raw_name));
	return 1;
      }
  return 0;
}

static tree
find_as_inner_class (enclosing, name, cl)
     tree enclosing, name, cl;
{
  tree qual, to_return;
  if (!enclosing)
    return NULL_TREE;

  name = TYPE_NAME (name);

  /* First search: within the scope of `enclosing', search for name */
  if (QUALIFIED_P (name) && cl && EXPR_WFL_NODE (cl) == name)
    qual = EXPR_WFL_QUALIFICATION (cl);
  else if (cl)
    qual = build_tree_list (cl, NULL_TREE);
  else
    qual = build_tree_list (build_expr_wfl (name, NULL, 0, 0), NULL_TREE);
  
  if ((to_return = find_as_inner_class_do (qual, enclosing)))
    return to_return;

  /* We're dealing with a qualified name. Try to resolve thing until
     we get something that is an enclosing class. */
  if (QUALIFIED_P (name) && cl && EXPR_WFL_NODE (cl) == name)
    {
      tree acc = NULL_TREE, decl = NULL_TREE, ptr;

      for(qual = EXPR_WFL_QUALIFICATION (cl); qual && !decl; 
	  qual = TREE_CHAIN (qual))
	{
	  acc = merge_qualified_name (acc, 
				      EXPR_WFL_NODE (TREE_PURPOSE (qual)));
	  BUILD_PTR_FROM_NAME (ptr, acc);
	  decl = do_resolve_class (NULL_TREE, ptr, NULL_TREE, cl);
	}

      /* A NULL qual and a decl means that the search ended
         successfully?!? We have to do something then. FIXME */
      
      if (decl)
	enclosing = decl;
      else
	qual = EXPR_WFL_QUALIFICATION (cl);
    }
  /* Otherwise, create a qual for the other part of the resolution. */
  else
    qual = build_tree_list (build_expr_wfl (name, NULL, 0, 0), NULL_TREE);

  return find_as_inner_class_do (qual, enclosing);
}

/* We go inside the list of sub classes and try to find a way
   through. */

static tree
find_as_inner_class_do (qual, enclosing)
     tree qual, enclosing;
{
  if (!qual)
    return NULL_TREE;

  for (; qual && enclosing; qual = TREE_CHAIN (qual))
    {
      tree name_to_match = EXPR_WFL_NODE (TREE_PURPOSE (qual));
      tree next_enclosing = NULL_TREE;
      tree inner_list;

      for (inner_list = DECL_INNER_CLASS_LIST (enclosing);
           inner_list; inner_list = TREE_CHAIN (inner_list))
	{
	  if (TREE_VALUE (inner_list) == name_to_match)
	    {
	      next_enclosing = TREE_PURPOSE (inner_list);
	      break;
	    }
	}
      enclosing = next_enclosing;
    }

  return (!qual && enclosing ? enclosing : NULL_TREE);
}

/* Reach all inner classes and tie their unqualified name to a
   DECL. */

static void
set_nested_class_simple_name_value (outer, set)
     tree outer;
     int set;
{
  tree l;

  for (l = DECL_INNER_CLASS_LIST (outer); l; l = TREE_CHAIN (l))
    IDENTIFIER_GLOBAL_VALUE (TREE_VALUE (l)) = (set ? 
						TREE_PURPOSE (l) : NULL_TREE);
}

static void
link_nested_class_to_enclosing ()
{
  if (GET_ENCLOSING_CPC ())
    {
      tree enclosing = GET_ENCLOSING_CPC_CONTEXT ();
      DECL_INNER_CLASS_LIST (enclosing) = 
	tree_cons (GET_CPC (), GET_CPC_UN (),
		   DECL_INNER_CLASS_LIST (enclosing));
      enclosing = enclosing;
    }
}

static tree
maybe_make_nested_class_name (name)
     tree name;
{
  tree id = NULL_TREE;

  if (CPC_INNER_P ())
    {
      make_nested_class_name (GET_CPC_LIST ());
      obstack_grow0 (&temporary_obstack,
		     IDENTIFIER_POINTER (name), 
		     IDENTIFIER_LENGTH (name));
      id = get_identifier (obstack_finish (&temporary_obstack));
      if (ctxp->package)
	QUALIFIED_P (id) = 1;
    }
  return id;
}

/* If DECL is NULL, create and push a new DECL, record the current
   line CL and do other maintenance things.  */

static tree
maybe_create_class_interface_decl (decl, raw_name, qualified_name, cl)
     tree decl, raw_name, qualified_name, cl;
{
  if (!decl)
    decl = push_class (make_class (), qualified_name);

  /* Take care of the file and line business */
  DECL_SOURCE_FILE (decl) = EXPR_WFL_FILENAME (cl);
  /* If we're emiting xrefs, store the line/col number information */
  if (flag_emit_xref)
    DECL_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (cl);
  else
    DECL_SOURCE_LINE (decl) = EXPR_WFL_LINENO (cl);
  CLASS_FROM_SOURCE_P (TREE_TYPE (decl)) = 1;
  CLASS_FROM_CURRENTLY_COMPILED_SOURCE_P (TREE_TYPE (decl)) =
    IS_A_COMMAND_LINE_FILENAME_P (EXPR_WFL_FILENAME_NODE (cl));

  PUSH_CPC (decl, raw_name);
  DECL_CONTEXT (decl) = GET_ENCLOSING_CPC_CONTEXT ();

  /* Link the declaration to the already seen ones */
  TREE_CHAIN (decl) = ctxp->class_list;
  ctxp->class_list = decl;

  /* Create a new nodes in the global lists */
  ctxp->gclass_list = tree_cons (NULL_TREE, decl, ctxp->gclass_list);
  all_class_list = tree_cons (NULL_TREE, decl, all_class_list);

  /* Install a new dependency list element */
  create_jdep_list (ctxp);

  SOURCE_FRONTEND_DEBUG (("Defining class/interface %s", 
			  IDENTIFIER_POINTER (qualified_name)));
  return decl;
}

static void
add_superinterfaces (decl, interface_list)
     tree decl, interface_list;
{
  tree node;
  /* Superinterface(s): if present and defined, parser_check_super_interface ()
     takes care of ensuring that:
       - This is an accessible interface type,
       - Circularity detection.
   parser_add_interface is then called. If present but not defined,
   the check operation is delayed until the super interface gets
   defined.  */
  for (node = interface_list; node; node = TREE_CHAIN (node))
    {
      tree current = TREE_PURPOSE (node);
      tree idecl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (current));
      if (idecl && CLASS_LOADED_P (TREE_TYPE (idecl)))
	{
	  if (!parser_check_super_interface (idecl, decl, current))
	    parser_add_interface (decl, idecl, current);
	}
      else
	register_incomplete_type (JDEP_INTERFACE,
				  current, decl, NULL_TREE);
    }
}

/* Create an interface in pass1 and return its decl. Return the
   interface's decl in pass 2.  */

static tree
create_interface (flags, id, super)
     int flags;
     tree id, super;
{
  tree raw_name = EXPR_WFL_NODE (id);
  tree q_name = parser_qualified_classname (flags & ACC_STATIC, raw_name);
  tree decl = IDENTIFIER_CLASS_VALUE (q_name);

  EXPR_WFL_NODE (id) = q_name;	/* Keep source location, even if refined. */

  /* Basic checks: scope, redefinition, modifiers */ 
  if (check_class_interface_creation (1, flags, raw_name, q_name, decl, id))
    {
      PUSH_ERROR ();
      return NULL_TREE;
    }

  /* Suspend the current parsing context if we're parsing an inner
     interface */
  if (CPC_INNER_P ())
    java_parser_context_suspend ();

  /* Push a new context for (static) initialized upon declaration fields */
  java_parser_context_push_initialized_field ();

  /* Interface modifiers check
       - public/abstract allowed (already done at that point)
       - abstract is obsolete (comes first, it's a warning, or should be)
       - Can't use twice the same (checked in the modifier rule) */
  if ((flags & ACC_ABSTRACT) && flag_redundant)
    parse_warning_context 
      (MODIFIER_WFL (ABSTRACT_TK),
       "Redundant use of `abstract' modifier. Interface `%s' is implicitely abstract", IDENTIFIER_POINTER (raw_name));

  /* Create a new decl if DECL is NULL, otherwise fix it */
  decl = maybe_create_class_interface_decl (decl, raw_name, q_name, id);

  /* Set super info and mark the class a complete */
  set_super_info (ACC_INTERFACE | flags, TREE_TYPE (decl), 
		  object_type_node, ctxp->interface_number);
  ctxp->interface_number = 0;
  CLASS_COMPLETE_P (decl) = 1;
  add_superinterfaces (decl, super);

  return decl;
}

/* Anonymous class counter. Will be reset to 1 every time a non
   anonymous class gets created. */
static int anonymous_class_counter = 1;

/* Patch anonymous class CLASS, by either extending or implementing
   DEP.  */

static void
patch_anonymous_class (type_decl, class_decl, wfl)
    tree type_decl, class_decl, wfl;
{
  tree class = TREE_TYPE (class_decl);
  tree type =  TREE_TYPE (type_decl);
  tree binfo = TYPE_BINFO (class);

  /* If it's an interface, implement it */
  if (CLASS_INTERFACE (type_decl))
    {
      tree s_binfo;
      int length;

      if (parser_check_super_interface (type_decl, class_decl, wfl))
	return;

      s_binfo = TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (class)), 0);
      length = TREE_VEC_LENGTH (TYPE_BINFO_BASETYPES (class))+1;
      TYPE_BINFO_BASETYPES (class) = make_tree_vec (length);
      TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO (class)), 0) = s_binfo;
      /* And add the interface */
      parser_add_interface (class_decl, type_decl, wfl);
    }
  /* Otherwise, it's a type we want to extend */
  else
    {
      if (parser_check_super (type_decl, class_decl, wfl))
	return;
      BINFO_TYPE (TREE_VEC_ELT (BINFO_BASETYPES (binfo), 0)) = type;
    }
}

static tree
create_anonymous_class (location, type_name)
    int location;
    tree type_name;
{
  char buffer [80];
  tree super = NULL_TREE, itf = NULL_TREE;
  tree id, type_decl, class;

  /* The unqualified name of the anonymous class. It's just a number. */
  sprintf (buffer, "%d", anonymous_class_counter++);
  id = build_wfl_node (get_identifier (buffer));
  EXPR_WFL_LINECOL (id) = location;

  /* We know about the type to extend/implement. We go ahead */
  if ((type_decl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (type_name))))
    {
      /* Create a class which either implements on extends the designated
	 class. The class bears an innacessible name. */
      if (CLASS_INTERFACE (type_decl))
	{
	  /* It's OK to modify it here. It's been already used and
             shouldn't be reused */
	  ctxp->interface_number = 1;
	  /* Interfaces should presented as a list of WFLs */
	  itf = build_tree_list (type_name, NULL_TREE);
	}
      else
	super = type_name;
    }

  class = create_class (ACC_FINAL, id, super, itf);

  /* We didn't know anything about the stuff. We register a dependence. */
  if (!type_decl)
    register_incomplete_type (JDEP_ANONYMOUS, type_name, class, NULL_TREE);

  ANONYMOUS_CLASS_P (TREE_TYPE (class)) = 1;
  return class;
}

/* Create a class in pass1 and return its decl. Return class
   interface's decl in pass 2.  */

static tree
create_class (flags, id, super, interfaces)
     int flags;
     tree id, super, interfaces;
{
  tree raw_name = EXPR_WFL_NODE (id);
  tree class_id, decl;
  tree super_decl_type;

  class_id = parser_qualified_classname (0, raw_name);
  decl = IDENTIFIER_CLASS_VALUE (class_id);
  EXPR_WFL_NODE (id) = class_id;

  /* Basic check: scope, redefinition, modifiers */
  if (check_class_interface_creation (0, flags, raw_name, class_id, decl, id))
    {
      PUSH_ERROR ();
      return NULL_TREE;
    }
  
  /* Suspend the current parsing context if we're parsing an inner
     class or an anonymous class. */
  if (CPC_INNER_P ())
    java_parser_context_suspend ();
  /* Push a new context for (static) initialized upon declaration fields */
  java_parser_context_push_initialized_field ();

  /* Class modifier check: 
       - Allowed modifier (already done at that point)
       - abstract AND final forbidden 
       - Public classes defined in the correct file */
  if ((flags & ACC_ABSTRACT) && (flags & ACC_FINAL))
    parse_error_context
      (id, "Class `%s' can't be declared both abstract and final",
       IDENTIFIER_POINTER (raw_name));

  /* Create a new decl if DECL is NULL, otherwise fix it */
  decl = maybe_create_class_interface_decl (decl, raw_name, class_id, id);

  /* If SUPER exists, use it, otherwise use Object */
  if (super)
    {
      /* Can't extend java.lang.Object */
      if (TREE_TYPE (IDENTIFIER_CLASS_VALUE (class_id)) == object_type_node)
	{
	  parse_error_context (id, "Can't extend `java.lang.Object'");
	  return NULL_TREE;
	}

      super_decl_type = 
	register_incomplete_type (JDEP_SUPER, super, decl, NULL_TREE);
    }
  else if (TREE_TYPE (decl) != object_type_node)
    super_decl_type = object_type_node;
  /* We're defining java.lang.Object */
  else
    super_decl_type = NULL_TREE;

  /* Set super info and mark the class a complete */
  set_super_info (flags, TREE_TYPE (decl), super_decl_type, 
		  ctxp->interface_number);
  ctxp->interface_number = 0;
  CLASS_COMPLETE_P (decl) = 1;
  add_superinterfaces (decl, interfaces);

  /* If the class is a top level inner class, install an alias. */
  if (INNER_CLASS_DECL_P (decl) && CLASS_STATIC (decl))
    {
      tree alias = parser_qualified_classname (1, raw_name);
      IDENTIFIER_GLOBAL_VALUE (alias) = decl;
    }

  /* Add the private this$<n> field, Replicate final locals still in
     scope as private final fields mangled like val$<local_name>.
     This doesn't not occur for top level (static) inner classes. */
  if (PURE_INNER_CLASS_DECL_P (decl))
    add_inner_class_fields (decl, current_function_decl);

  /* If doing xref, store the location at which the inherited class
     (if any) was seen. */
  if (flag_emit_xref && super)
    DECL_INHERITED_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (super);

  /* Eventually sets the @deprecated tag flag */
  CHECK_DEPRECATED (decl);

  /* Reset the anonymous class counter when declaring non inner classes */
  if (!INNER_CLASS_DECL_P (decl))
    anonymous_class_counter = 1;

  return decl;
}

/* End a class declaration: register the statements used to create
   $finit$ and <clinit>, pop the current class and resume the prior
   parser context if necessary.  */

static void
end_class_declaration (resume)
     int resume;
{
  /* If an error occured, context weren't pushed and won't need to be
     popped by a resume. */
  int no_error_occured = ctxp->next && GET_CPC () != error_mark_node;

  java_parser_context_pop_initialized_field ();
  POP_CPC ();
  if (resume && no_error_occured)
    java_parser_context_resume ();

  /* We're ending a class declaration, this is a good time to reset
     the interface cout. Note that might have been already done in
     create_interface, but if at that time an inner class was being
     dealt with, the interface count was reset in a context created
     for the sake of handling inner classes declaration. */
  ctxp->interface_number = 0;
}

static void
add_inner_class_fields (class_decl, fct_decl)
     tree class_decl;
     tree fct_decl;
{
  tree block, marker, f;

  f = add_field (TREE_TYPE (class_decl),
		 build_current_thisn (TREE_TYPE (class_decl)),
		 build_pointer_type (TREE_TYPE (DECL_CONTEXT (class_decl))), 
		 ACC_PRIVATE);
  FIELD_THISN (f) = 1;

  if (!fct_decl)
    return;
    
  for (block = GET_CURRENT_BLOCK (fct_decl); 
       block && TREE_CODE (block) == BLOCK; block = BLOCK_SUPERCONTEXT (block))
    {
      tree decl;
      for (decl = BLOCK_EXPR_DECLS (block); decl; decl = TREE_CHAIN (decl))
	{
	  char *name, *pname;
	  tree wfl, init, list;
	  
	  /* Avoid non final arguments. */
	  if (!LOCAL_FINAL (decl))
	    continue;
	  
	  MANGLE_OUTER_LOCAL_VARIABLE_NAME (name, DECL_NAME (decl));
	  MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_ID (pname, DECL_NAME (decl));
	  wfl = build_wfl_node (get_identifier (name));
	  init = build_wfl_node (get_identifier (pname));
	  /* Build an initialization for the field: it will be
	     initialized by a parameter added to $finit$, bearing a
	     mangled name of the field itself (param$<n>.) The
	     parameter is provided to $finit$ by the constructor
	     invoking it (hence the constructor will also feature a
	     hidden parameter, set to the value of the outer context
	     local at the time the inner class is created.)
	     
	     Note: we take into account all possible locals that can
	     be accessed by the inner class. It's actually not trivial
	     to minimize these aliases down to the ones really
	     used. One way to do that would be to expand all regular
	     methods first, then $finit$ to get a picture of what's
	     used.  It works with the exception that we would have to
	     go back on all constructor invoked in regular methods to
	     have their invokation reworked (to include the right amount
	     of alias initializer parameters.)

	     The only real way around, I think, is a first pass to
	     identify locals really used in the inner class. We leave
	     the flag FIELD_LOCAL_ALIAS_USED around for that future
	     use.
	     
	     On the other hand, it only affect local inner classes,
	     whose constructors (and $finit$ call) will be featuring
	     unecessary arguments. It's easy for a developper to keep
	     this number of parameter down by using the `final'
	     keyword only when necessary. For the time being, we can
	     issue a warning on unecessary finals. FIXME */
	  init = build_assignment (ASSIGN_TK, EXPR_WFL_LINECOL (wfl), 
				   wfl, init);

	  /* Register the field. The TREE_LIST holding the part
	     initialized/initializer will be marked ARG_FINAL_P so
	     that the created field can be marked
	     FIELD_LOCAL_ALIAS. */
	  list = build_tree_list (wfl, init);
	  ARG_FINAL_P (list) = 1;
	  register_fields (ACC_PRIVATE | ACC_FINAL, TREE_TYPE (decl), list);
	}
    }

  if (!CPC_INITIALIZER_STMT (ctxp))
    return;

  /* If we ever registered an alias field, insert and marker to
     remeber where the list ends. The second part of the list (the one
     featuring initialized fields) so it can be later reversed to
     enforce 8.5. The marker will be removed during that operation. */
  marker = build_tree_list (NULL_TREE, NULL_TREE);
  TREE_CHAIN (marker) = CPC_INITIALIZER_STMT (ctxp);
  SET_CPC_INITIALIZER_STMT (ctxp, marker);
}

/* Can't use lookup_field () since we don't want to load the class and
   can't set the CLASS_LOADED_P flag */

static tree
find_field (class, name)
     tree class;
     tree name;
{
  tree decl;
  for (decl = TYPE_FIELDS (class); decl; decl = TREE_CHAIN (decl))
    {
      if (DECL_NAME (decl) == name)
	return decl;
    }
  return NULL_TREE;
}

/* Wrap around lookup_field that doesn't potentially upset the value
   of CLASS */

static tree
lookup_field_wrapper (class, name)
     tree class, name;
{
  tree type = class;
  tree decl;
  java_parser_context_save_global ();
  decl = lookup_field (&type, name);

  /* Last chance: if we're within the context of an inner class, we
     might be trying to access a local variable defined in an outer
     context. We try to look for it now. */
  if (INNER_CLASS_TYPE_P (class) && (!decl || decl == error_mark_node))
    {
      char *alias_buffer;
      MANGLE_OUTER_LOCAL_VARIABLE_NAME (alias_buffer, name);
      name = get_identifier (alias_buffer);
      type = class;
      decl = lookup_field (&type, name);
      if (decl && decl != error_mark_node)
	FIELD_LOCAL_ALIAS_USED (decl) = 1;
    }

  java_parser_context_restore_global ();
  return decl == error_mark_node ? NULL : decl;
}

/* Find duplicate field within the same class declarations and report
   the error. Returns 1 if a duplicated field was found, 0
   otherwise.  */

static int
duplicate_declaration_error_p (new_field_name, new_type, cl)
     tree new_field_name, new_type, cl;
{
  /* This might be modified to work with method decl as well */
  tree decl = find_field (TREE_TYPE (GET_CPC ()), new_field_name);
  if (decl)
    {
      char *t1 = xstrdup (purify_type_name
			 ((TREE_CODE (new_type) == POINTER_TYPE 
			   && TREE_TYPE (new_type) == NULL_TREE) ?
			  IDENTIFIER_POINTER (TYPE_NAME (new_type)) :
			  lang_printable_name (new_type, 1)));
      /* The type may not have been completed by the time we report
	 the error */
      char *t2 = xstrdup (purify_type_name
			 ((TREE_CODE (TREE_TYPE (decl)) == POINTER_TYPE 
			   && TREE_TYPE (TREE_TYPE (decl)) == NULL_TREE) ?
			  IDENTIFIER_POINTER (TYPE_NAME (TREE_TYPE (decl))) :
			  lang_printable_name (TREE_TYPE (decl), 1)));
      parse_error_context 
	(cl , "Duplicate variable declaration: `%s %s' was `%s %s' (%s:%d)", 
	 t1, IDENTIFIER_POINTER (new_field_name),
	 t2, IDENTIFIER_POINTER (DECL_NAME (decl)),
	 DECL_SOURCE_FILE (decl), DECL_SOURCE_LINE (decl));
      free (t1);
      free (t2);
      return 1;
    }
  return 0;
}

/* Field registration routine. If TYPE doesn't exist, field
   declarations are linked to the undefined TYPE dependency list, to
   be later resolved in java_complete_class () */

static void
register_fields (flags, type, variable_list)
     int flags;
     tree type, variable_list;
{
  tree current, saved_type;
  tree class_type = NULL_TREE;
  int saved_lineno = lineno;
  int must_chain = 0;
  tree wfl = NULL_TREE;

  if (GET_CPC ())
    class_type = TREE_TYPE (GET_CPC ());

  if (!class_type || class_type == error_mark_node)
    return;

  /* If we're adding fields to interfaces, those fields are public,
     static, final */
  if (CLASS_INTERFACE (TYPE_NAME (class_type)))
    {
      OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (PUBLIC_TK),
				 flags, ACC_PUBLIC, "interface field(s)");
      OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (STATIC_TK),
				 flags, ACC_STATIC, "interface field(s)");
      OBSOLETE_MODIFIER_WARNING (MODIFIER_WFL (FINAL_TK),
				 flags, ACC_FINAL, "interface field(s)");
      check_modifiers ("Illegal interface member modifier `%s'", flags,
		       INTERFACE_FIELD_MODIFIERS);
      flags |= (ACC_PUBLIC | ACC_STATIC | ACC_FINAL);
    }

  /* Obtain a suitable type for resolution, if necessary */
  SET_TYPE_FOR_RESOLUTION (type, wfl, must_chain);

  /* If TYPE is fully resolved and we don't have a reference, make one */
  PROMOTE_RECORD_IF_COMPLETE (type, must_chain);

  for (current = variable_list, saved_type = type; current; 
       current = TREE_CHAIN (current), type = saved_type)
    {
      tree real_type;
      tree field_decl;
      tree cl = TREE_PURPOSE (current);
      tree init = TREE_VALUE (current);
      tree current_name = EXPR_WFL_NODE (cl);

      /* Can't declare static fields in inner classes */
      if ((flags & ACC_STATIC) && !TOPLEVEL_CLASS_TYPE_P (class_type)
	  && !CLASS_INTERFACE (TYPE_NAME (class_type)))
	parse_error_context 
	  (cl, "Field `%s' can't be static in innerclass `%s'. Only members of interfaces and top-level classes can be static",
	   IDENTIFIER_POINTER (EXPR_WFL_NODE (cl)),
	   lang_printable_name (class_type, 0));

      /* Process NAME, as it may specify extra dimension(s) for it */
      type = build_array_from_name (type, wfl, current_name, &current_name);

      /* Type adjustment. We may have just readjusted TYPE because
	 the variable specified more dimensions. Make sure we have
	 a reference if we can and don't have one already. Also
	 change the name if we have an init. */
      if (type != saved_type)
	{
	  PROMOTE_RECORD_IF_COMPLETE (type, must_chain);
	  if (init)
	    EXPR_WFL_NODE (TREE_OPERAND (init, 0)) = current_name;
	}

      real_type = GET_REAL_TYPE (type);
      /* Check for redeclarations */
      if (duplicate_declaration_error_p (current_name, real_type, cl))
	continue;

      /* Set lineno to the line the field was found and create a
         declaration for it. Eventually sets the @deprecated tag flag. */
      if (flag_emit_xref)
	lineno = EXPR_WFL_LINECOL (cl);
      else
	lineno = EXPR_WFL_LINENO (cl);
      field_decl = add_field (class_type, current_name, real_type, flags);
      CHECK_DEPRECATED (field_decl);

      /* If the couple initializer/initialized is marked ARG_FINAL_P, we
	 mark the created field FIELD_LOCAL_ALIAS, so that we can 
	 hide parameters to this inner class $finit$ and constructors. */
      if (ARG_FINAL_P (current))
	FIELD_LOCAL_ALIAS (field_decl) = 1;
      
      /* Check if we must chain. */
      if (must_chain)
	register_incomplete_type (JDEP_FIELD, wfl, field_decl, type);
	  
      /* If we have an initialization value tied to the field */
      if (init)
	{
	  /* The field is declared static */
	  if (flags & ACC_STATIC)
	    {
	      /* We include the field and its initialization part into
		 a list used to generate <clinit>. After <clinit> is
		 walked, field initializations will be processed and
		 fields initialized with known constants will be taken
		 out of <clinit> and have their DECL_INITIAL set
		 appropriately. */
	      TREE_CHAIN (init) = CPC_STATIC_INITIALIZER_STMT (ctxp);
	      SET_CPC_STATIC_INITIALIZER_STMT (ctxp, init);
	      if (TREE_OPERAND (init, 1) 
		  && TREE_CODE (TREE_OPERAND (init, 1)) == NEW_ARRAY_INIT)
		TREE_STATIC (TREE_OPERAND (init, 1)) = 1;
	    }
	  /* A non-static field declared with an immediate initialization is
	     to be initialized in <init>, if any.  This field is remembered
	     to be processed at the time of the generation of <init>. */
	  else
	    {
	      TREE_CHAIN (init) = CPC_INITIALIZER_STMT (ctxp);
	      SET_CPC_INITIALIZER_STMT (ctxp, init);
	    }
	  MODIFY_EXPR_FROM_INITIALIZATION_P (init) = 1;
	  DECL_INITIAL (field_decl) = TREE_OPERAND (init, 1);
	}
    }
  lineno = saved_lineno;
}

/* Generate $finit$, using the list of initialized fields to populate
   its body. $finit$'s parameter(s) list is adjusted to include the
   one(s) used to initialized the field(s) caching outer context
   local(s). */

static tree
generate_finit (class_type)
     tree class_type;
{
  int count = 0;
  tree list = TYPE_FINIT_STMT_LIST (class_type);
  tree mdecl, current, parms;

  parms = build_alias_initializer_parameter_list (AIPL_FUNCTION_CREATION, 
						  class_type, NULL_TREE, 
						  &count);
  CRAFTED_PARAM_LIST_FIXUP (parms);
  mdecl = create_artificial_method (class_type, ACC_PRIVATE, void_type_node,
				    finit_identifier_node, parms);
  fix_method_argument_names (parms, mdecl);
  layout_class_method (class_type, CLASSTYPE_SUPER (class_type),
		       mdecl, NULL_TREE);
  DECL_FUNCTION_NAP (mdecl) = count;
  start_artificial_method_body (mdecl);

  for (current = list; current; current = TREE_CHAIN (current))
    java_method_add_stmt (mdecl, 
			  build_debugable_stmt (EXPR_WFL_LINECOL (current), 
						current));
  end_artificial_method_body (mdecl);
  return mdecl;
}

static void
add_instance_initializer (mdecl)
     tree mdecl;
{
  tree current;
  tree stmt_list = TYPE_II_STMT_LIST (DECL_CONTEXT (mdecl));
  tree compound = NULL_TREE;

  if (stmt_list)
    {
      for (current = stmt_list; current; current = TREE_CHAIN (current))
	compound = add_stmt_to_compound (compound, NULL_TREE, current);

      java_method_add_stmt (mdecl, build1 (INSTANCE_INITIALIZERS_EXPR,
					   NULL_TREE, compound));
    }
}

/* Shared accros method_declarator and method_header to remember the
   patch stage that was reached during the declaration of the method.
   A method DECL is built differently is there is no patch
   (JDEP_NO_PATCH) or a patch (JDEP_METHOD or JDEP_METHOD_RETURN)
   pending on the currently defined method.  */

static int patch_stage;

/* Check the method declaration and add the method to its current
   class.  If the argument list is known to contain incomplete types,
   the method is partially added and the registration will be resume
   once the method arguments resolved. If TYPE is NULL, we're dealing
   with a constructor.  */

static tree
method_header (flags, type, mdecl, throws)
     int flags;
     tree type, mdecl, throws;
{
  tree meth = TREE_VALUE (mdecl);
  tree id = TREE_PURPOSE (mdecl);
  tree type_wfl = NULL_TREE;
  tree meth_name = NULL_TREE;
  tree current, orig_arg, this_class = NULL;
  int saved_lineno;
  int constructor_ok = 0, must_chain;
  int count;
  
  check_modifiers_consistency (flags);

  if (GET_CPC ())
    this_class = TREE_TYPE (GET_CPC ());

  if (!this_class || this_class == error_mark_node)
    return NULL_TREE;
  
  /* There are some forbidden modifiers for an abstract method and its
     class must be abstract as well.  */
  if (type && (flags & ACC_ABSTRACT))
    {
      ABSTRACT_CHECK (flags, ACC_PRIVATE, id, "Private");
      ABSTRACT_CHECK (flags, ACC_STATIC, id, "Static");
      ABSTRACT_CHECK (flags, ACC_FINAL, id, "Final");
      ABSTRACT_CHECK (flags, ACC_NATIVE, id, "Native");
      ABSTRACT_CHECK (flags, ACC_SYNCHRONIZED,id, "Synchronized");
      if (!CLASS_ABSTRACT (TYPE_NAME (this_class))
	  && !CLASS_INTERFACE (TYPE_NAME (this_class)))
	parse_error_context 
	  (id, "Class `%s' must be declared abstract to define abstract method `%s'", 
	   IDENTIFIER_POINTER (DECL_NAME (ctxp->current_parsed_class)),
	   IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
    }

  /* Things to be checked when declaring a constructor */
  if (!type)
    {
      int ec = java_error_count;
      /* 8.6: Constructor declarations: we might be trying to define a
         method without specifying a return type. */
      if (EXPR_WFL_NODE (id) != GET_CPC_UN ())
	parse_error_context 
	  (id, "Invalid method declaration, return type required");
      /* 8.6.3: Constructor modifiers */
      else
	{
	  JCONSTRUCTOR_CHECK (flags, ACC_ABSTRACT, id, "abstract");
	  JCONSTRUCTOR_CHECK (flags, ACC_STATIC, id, "static");
	  JCONSTRUCTOR_CHECK (flags, ACC_FINAL, id, "final");
	  JCONSTRUCTOR_CHECK (flags, ACC_NATIVE, id, "native");
	  JCONSTRUCTOR_CHECK (flags, ACC_SYNCHRONIZED, id, "synchronized");
	}
      /* If we found error here, we don't consider it's OK to tread
	 the method definition as a constructor, for the rest of this
	 function */
      if (ec == java_error_count)
	constructor_ok = 1;
    }

  /* Method declared within the scope of an interface are implicitly
     abstract and public. Conflicts with other erroneously provided
     modifiers are checked right after. */

  if (CLASS_INTERFACE (TYPE_NAME (this_class)))
    {
      /* If FLAGS isn't set because of a modifier, turn the
	 corresponding modifier WFL to NULL so we issue a warning on
	 the obsolete use of the modifier */
      if (!(flags & ACC_PUBLIC))
        MODIFIER_WFL (PUBLIC_TK) = NULL;
      if (!(flags & ACC_ABSTRACT))
        MODIFIER_WFL (ABSTRACT_TK) = NULL;
      flags |= ACC_PUBLIC;
      flags |= ACC_ABSTRACT;
    }

  /* Inner class can't declare static methods */
  if ((flags & ACC_STATIC) && !TOPLEVEL_CLASS_TYPE_P (this_class))
    {
      parse_error_context 
	(id, "Method `%s' can't be static in inner class `%s'. Only members of interfaces and top-level classes can be static",
	 IDENTIFIER_POINTER (EXPR_WFL_NODE (id)),
	 lang_printable_name (this_class, 0));
    }

  /* Modifiers context reset moved up, so abstract method declaration
     modifiers can be later checked.  */

  /* Set constructor returned type to void and method name to <init>,
     unless we found an error identifier the constructor (in which
     case we retain the original name) */
  if (!type)
    {
      type = void_type_node;
      if (constructor_ok)
	meth_name = init_identifier_node;
    }
  else
    meth_name = EXPR_WFL_NODE (id);

  /* Do the returned type resolution and registration if necessary */
  SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);

  if (meth_name)
    type = build_array_from_name (type, type_wfl, meth_name, &meth_name);
  EXPR_WFL_NODE (id) = meth_name;
  PROMOTE_RECORD_IF_COMPLETE (type, must_chain);

  if (must_chain)
    {
      patch_stage = JDEP_METHOD_RETURN;
      register_incomplete_type (patch_stage, type_wfl, id, type);
      TREE_TYPE (meth) = GET_REAL_TYPE (type);
    }
  else
    TREE_TYPE (meth) = type;

  saved_lineno = lineno;
  /* When defining an abstract or interface method, the curly
     bracket at level 1 doesn't exist because there is no function
     body */
  lineno = (ctxp->first_ccb_indent1 ? ctxp->first_ccb_indent1 : 
	    EXPR_WFL_LINENO (id));

  /* Remember the original argument list */
  orig_arg = TYPE_ARG_TYPES (meth);

  if (patch_stage)		/* includes ret type and/or all args */
    {
      jdep *jdep;
      meth = add_method_1 (this_class, flags, meth_name, meth);
      /* Patch for the return type */
      if (patch_stage == JDEP_METHOD_RETURN)
	{
	  jdep = CLASSD_LAST (ctxp->classd_list);
	  JDEP_GET_PATCH (jdep) = &TREE_TYPE (TREE_TYPE (meth));
	}
      /* This is the stop JDEP. METH allows the function's signature
	 to be computed. */
      register_incomplete_type (JDEP_METHOD_END, NULL_TREE, meth, NULL_TREE);
    }
  else
    meth = add_method (this_class, flags, meth_name, 
		       build_java_signature (meth));

  /* Remember final parameters */
  MARK_FINAL_PARMS (meth, orig_arg);

  /* Fix the method argument list so we have the argument name
     information */
  fix_method_argument_names (orig_arg, meth);

  /* Register the parameter number and re-install the current line
     number */
  DECL_MAX_LOCALS (meth) = ctxp->formal_parameter_number+1;
  lineno = saved_lineno;

  /* Register exception specified by the `throws' keyword for
     resolution and set the method decl appropriate field to the list.
     Note: the grammar ensures that what we get here are class
     types. */
  if (throws)
    {
      throws = nreverse (throws);
      for (current = throws; current; current = TREE_CHAIN (current))
	{
	  register_incomplete_type (JDEP_EXCEPTION, TREE_VALUE (current),
				    NULL_TREE, NULL_TREE);
	  JDEP_GET_PATCH (CLASSD_LAST (ctxp->classd_list)) = 
	    &TREE_VALUE (current);
	}
      DECL_FUNCTION_THROWS (meth) = throws;
    }

  /* We set the DECL_NAME to ID so we can track the location where
     the function was declared. This allow us to report
     redefinition error accurately. When method are verified,
     DECL_NAME is reinstalled properly (using the content of the
     WFL node ID) (see check_method_redefinition). We don't do that
     when Object is being defined. Constructor <init> names will be
     reinstalled the same way. */
  if (TREE_TYPE (GET_CPC ()) != object_type_node)
    DECL_NAME (meth) = id;

  /* Set the flag if we correctly processed a constructor */
  if (constructor_ok)
    {
      DECL_CONSTRUCTOR_P (meth) = 1;
      /* Compute and store the number of artificial parameters declared
	 for this constructor */
      for (count = 0, current = TYPE_FIELDS (this_class); current; 
	   current = TREE_CHAIN (current))
	if (FIELD_LOCAL_ALIAS (current))
	  count++;
      DECL_FUNCTION_NAP (meth) = count;
    }

  /* Eventually set the @deprecated tag flag */
  CHECK_DEPRECATED (meth);

  /* If doing xref, store column and line number information instead
     of the line number only. */
  if (flag_emit_xref)
    DECL_SOURCE_LINE (meth) = EXPR_WFL_LINECOL (id);

  return meth;
}

static void
fix_method_argument_names (orig_arg, meth)
    tree orig_arg, meth;
{
  tree arg = TYPE_ARG_TYPES (TREE_TYPE (meth));
  if (TREE_CODE (TREE_TYPE (meth)) == METHOD_TYPE)
    {
      TREE_PURPOSE (arg) = this_identifier_node;
      arg = TREE_CHAIN (arg);
    }
  while (orig_arg != end_params_node)
    {
      TREE_PURPOSE (arg) = TREE_PURPOSE (orig_arg);
      orig_arg = TREE_CHAIN (orig_arg);
      arg = TREE_CHAIN (arg);
    }
}

/* Complete the method declaration with METHOD_BODY.  */

static void
finish_method_declaration (method_body)
     tree method_body;
{
  int flags;

  if (!current_function_decl)
    return;

  flags = get_access_flags_from_decl (current_function_decl);

  /* 8.4.5 Method Body */
  if ((flags & ACC_ABSTRACT || flags & ACC_NATIVE) && method_body)
    {
      tree wfl = DECL_NAME (current_function_decl);
      parse_error_context (wfl, 
			   "%s method `%s' can't have a body defined",
			   (METHOD_NATIVE (current_function_decl) ?
			    "Native" : "Abstract"),
			   IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
      method_body = NULL_TREE;
    }
  else if (!(flags & ACC_ABSTRACT) && !(flags & ACC_NATIVE) && !method_body)
    {
      tree wfl = DECL_NAME (current_function_decl);
      parse_error_context
	(wfl, 
	 "Non native and non abstract method `%s' must have a body defined",
	 IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
      method_body = NULL_TREE;
    }

  if (flag_emit_class_files && method_body 
      && TREE_CODE (method_body) == NOP_EXPR 
      && TREE_TYPE (current_function_decl) 
      && TREE_TYPE (TREE_TYPE (current_function_decl)) == void_type_node)
    method_body = build1 (RETURN_EXPR, void_type_node, NULL);

  BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (current_function_decl)) = method_body;
  maybe_absorb_scoping_blocks ();
  /* Exit function's body */
  exit_block ();
  /* Merge last line of the function with first line, directly in the
     function decl. It will be used to emit correct debug info. */
  if (!flag_emit_xref)
    DECL_SOURCE_LINE_MERGE (current_function_decl, ctxp->last_ccb_indent1);

  /* Since function's argument's list are shared, reset the
     ARG_FINAL_P parameter that might have been set on some of this
     function parameters. */
  UNMARK_FINAL_PARMS (current_function_decl);
  
  /* So we don't have an irrelevant function declaration context for
     the next static block we'll see. */
  current_function_decl = NULL_TREE;
}

/* Build a an error message for constructor circularity errors.  */

static char *
constructor_circularity_msg (from, to)
     tree from, to;
{
  static char string [4096];
  char *t = xstrdup (lang_printable_name (from, 0));
  sprintf (string, "`%s' invokes `%s'", t, lang_printable_name (to, 0));
  free (t);
  return string;
}

/* Verify a circular call to METH. Return 1 if an error is found, 0
   otherwise.  */

static int
verify_constructor_circularity (meth, current)
     tree meth, current;
{
  static tree list = NULL_TREE;
  tree c;
  for (c = DECL_CONSTRUCTOR_CALLS (current); c; c = TREE_CHAIN (c))
    {
      if (TREE_VALUE (c) == meth)
	{
	  char *t;
	  if (list)
	    {
	      tree liste;
	      list = nreverse (list);
	      for (liste = list; liste; liste = TREE_CHAIN (liste))
		{
		  parse_error_context 
		    (TREE_PURPOSE (TREE_PURPOSE (liste)), "%s",
		     constructor_circularity_msg
		      (TREE_VALUE (liste), TREE_VALUE (TREE_PURPOSE (liste)))); 
		  java_error_count--;
		}
	    }
	  t = xstrdup (lang_printable_name (meth, 0));
	  parse_error_context (TREE_PURPOSE (c), 
			       "%s: recursive invocation of constructor `%s'",
			       constructor_circularity_msg (current, meth), t);
	  free (t);
	  list = NULL_TREE;
	  return 1;
	}
    }
  for (c = DECL_CONSTRUCTOR_CALLS (current); c; c = TREE_CHAIN (c))
    {
      list = tree_cons (c, current, list);
      if (verify_constructor_circularity (meth, TREE_VALUE (c)))
	return 1;
      list = TREE_CHAIN (list);
    }
  return 0;
}

/* Check modifiers that can be declared but exclusively */

static void
check_modifiers_consistency (flags)
     int flags;
{
  int acc_count = 0;
  tree cl = NULL_TREE;

  THIS_MODIFIER_ONLY (flags, ACC_PUBLIC, PUBLIC_TK, acc_count, cl);
  THIS_MODIFIER_ONLY (flags, ACC_PRIVATE, PRIVATE_TK, acc_count, cl);
  THIS_MODIFIER_ONLY (flags, ACC_PROTECTED, PROTECTED_TK, acc_count, cl);
  if (acc_count > 1)
    parse_error_context
      (cl, "Inconsistent member declaration.  At most one of `public', `private', or `protected' may be specified");

  acc_count = 0;
  cl = NULL_TREE;
  THIS_MODIFIER_ONLY (flags, ACC_FINAL, FINAL_TK - PUBLIC_TK,
		      acc_count, cl);
  THIS_MODIFIER_ONLY (flags, ACC_VOLATILE, VOLATILE_TK - PUBLIC_TK,
		      acc_count, cl);
  if (acc_count > 1)
    parse_error_context (cl,
			 "Inconsistent member declaration.  At most one of `final' or `volatile' may be specified");
}

/* Check the methode header METH for abstract specifics features */

static void
check_abstract_method_header (meth)
     tree meth;
{
  int flags = get_access_flags_from_decl (meth);
  /* DECL_NAME might still be a WFL node */
  tree name = GET_METHOD_NAME (meth);

  OBSOLETE_MODIFIER_WARNING2 (MODIFIER_WFL (ABSTRACT_TK), flags,
			      ACC_ABSTRACT, "abstract method",
			      IDENTIFIER_POINTER (name));
  OBSOLETE_MODIFIER_WARNING2 (MODIFIER_WFL (PUBLIC_TK), flags, 
			      ACC_PUBLIC, "abstract method",
			      IDENTIFIER_POINTER (name));

  check_modifiers ("Illegal modifier `%s' for interface method",
		  flags, INTERFACE_METHOD_MODIFIERS);
}

/* Create a FUNCTION_TYPE node and start augmenting it with the
   declared function arguments. Arguments type that can't be resolved
   are left as they are, but the returned node is marked as containing
   incomplete types.  */

static tree
method_declarator (id, list)
     tree id, list;
{
  tree arg_types = NULL_TREE, current, node;
  tree meth = make_node (FUNCTION_TYPE);
  jdep *jdep;

  patch_stage = JDEP_NO_PATCH;

  /* If we're dealing with an inner class constructor, we hide the
     this$<n> decl in the name field of its parameter declaration.  We
     also might have to hide the outer context local alias
     initializers. Not done when the class is a toplevel class. */
  if (PURE_INNER_CLASS_DECL_P (GET_CPC ()) 
      && EXPR_WFL_NODE (id) == GET_CPC_UN ())
    {
      tree aliases_list, type, thisn;
      /* First the aliases, linked to the regular parameters */
      aliases_list =
	build_alias_initializer_parameter_list (AIPL_FUNCTION_DECLARATION, 
						TREE_TYPE (GET_CPC ()),
						NULL_TREE, NULL);
      list = chainon (nreverse (aliases_list), list);

      /* Then this$<n> */
      type = TREE_TYPE (DECL_CONTEXT (GET_CPC ()));
      thisn = build_current_thisn (TYPE_NAME (GET_CPC ()));
      list = tree_cons (build_wfl_node (thisn), build_pointer_type (type),
			list);
    }
  
  for (current = list; current; current = TREE_CHAIN (current))
    {
      int must_chain = 0;
      tree wfl_name = TREE_PURPOSE (current);
      tree type = TREE_VALUE (current);
      tree name = EXPR_WFL_NODE (wfl_name);
      tree already, arg_node;
      tree type_wfl = NULL_TREE;
      tree real_type;

      /* Obtain a suitable type for resolution, if necessary */
      SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);

      /* Process NAME, as it may specify extra dimension(s) for it */
      type = build_array_from_name (type, type_wfl, name, &name);
      EXPR_WFL_NODE (wfl_name) = name;

      real_type = GET_REAL_TYPE (type);
      if (TREE_CODE (real_type) == RECORD_TYPE)
	{
	  real_type = promote_type (real_type);
	  if (TREE_CODE (type) == TREE_LIST)
	    TREE_PURPOSE (type) = real_type;
	}

      /* Check redefinition */
      for (already = arg_types; already; already = TREE_CHAIN (already))
	if (TREE_PURPOSE (already) == name)
	  {
	    parse_error_context
	      (wfl_name, "Variable `%s' is used more than once in the argument list of method `%s'",
	       IDENTIFIER_POINTER (name),
	       IDENTIFIER_POINTER (EXPR_WFL_NODE (id)));
	    break;
	  }

      /* If we've an incomplete argument type, we know there is a location
	 to patch when the type get resolved, later.  */
      jdep = NULL;
      if (must_chain)
	{
	  patch_stage = JDEP_METHOD;
	  type = register_incomplete_type (patch_stage, 
					   type_wfl, wfl_name, type);
	  jdep = CLASSD_LAST (ctxp->classd_list);
	  JDEP_MISC (jdep) = id;
	}

      /* The argument node: a name and a (possibly) incomplete type.  */
      arg_node = build_tree_list (name, real_type);
      /* Remeber arguments declared final. */
      ARG_FINAL_P (arg_node) = ARG_FINAL_P (current);
      
      if (jdep)
	JDEP_GET_PATCH (jdep) = &TREE_VALUE (arg_node);
      TREE_CHAIN (arg_node) = arg_types;
      arg_types = arg_node;
    }
  TYPE_ARG_TYPES (meth) = chainon (nreverse (arg_types), end_params_node);
  node = build_tree_list (id, meth);
  return node;
}

static int
unresolved_type_p (wfl, returned)
     tree wfl;
     tree *returned;
     
{
  if (TREE_CODE (wfl) == EXPR_WITH_FILE_LOCATION)
    {
      if (returned)
	{
	  tree decl = IDENTIFIER_CLASS_VALUE (EXPR_WFL_NODE (wfl));
	  if (decl && current_class && (decl == TYPE_NAME (current_class)))
	    *returned = TREE_TYPE (decl);
	  else if (GET_CPC_UN () == EXPR_WFL_NODE (wfl))
	    *returned = TREE_TYPE (GET_CPC ());
	  else
	    *returned = NULL_TREE;
	}
      return 1;
    }
  if (returned)
    *returned = wfl;
  return 0;
}

/* From NAME, build a qualified identifier node using the
   qualification from the current package definition. */

static tree
parser_qualified_classname (is_static, name)
     int is_static;
     tree name;
{
  tree nested_class_name;

  if (!is_static 
      && (nested_class_name = maybe_make_nested_class_name (name)))
    return nested_class_name;

  if (ctxp->package)
    return merge_qualified_name (ctxp->package, name);
  else 
    return name;
}

/* Called once the type a interface extends is resolved. Returns 0 if
   everything is OK.  */

static int
parser_check_super_interface (super_decl, this_decl, this_wfl)
     tree super_decl, this_decl, this_wfl;
{
  tree super_type = TREE_TYPE (super_decl);

  /* Has to be an interface */
  if (!CLASS_INTERFACE (super_decl))
    {
      parse_error_context 
	(this_wfl, "Can't use %s `%s' to implement/extend %s `%s'",
	 (TYPE_ARRAY_P (super_type) ? "array" : "class"),
	 IDENTIFIER_POINTER (DECL_NAME (super_decl)),
	 (CLASS_INTERFACE (TYPE_NAME (TREE_TYPE (this_decl))) ? 
	  "interface" : "class"),
	 IDENTIFIER_POINTER (DECL_NAME (this_decl)));
      return 1;
    }

  /* Check scope: same package OK, other package: OK if public */
  if (check_pkg_class_access (DECL_NAME (super_decl), lookup_cl (this_decl)))
    return 1;

  SOURCE_FRONTEND_DEBUG (("Completing interface %s with %s",
			  IDENTIFIER_POINTER (DECL_NAME (this_decl)),
			  IDENTIFIER_POINTER (DECL_NAME (super_decl))));
  return 0;
}

/* Makes sure that SUPER_DECL is suitable to extend THIS_DECL. Returns
   0 if everthing is OK.  */

static int
parser_check_super (super_decl, this_decl, wfl)
     tree super_decl, this_decl, wfl;
{
  tree super_type = TREE_TYPE (super_decl);

  /* SUPER should be a CLASS (neither an array nor an interface) */
  if (TYPE_ARRAY_P (super_type) || CLASS_INTERFACE (TYPE_NAME (super_type)))
    {
      parse_error_context 
	(wfl, "Class `%s' can't subclass %s `%s'",
	 IDENTIFIER_POINTER (DECL_NAME (this_decl)),
	 (CLASS_INTERFACE (TYPE_NAME (super_type)) ? "interface" : "array"),
	 IDENTIFIER_POINTER (DECL_NAME (super_decl)));
      return 1;
    }

  if (CLASS_FINAL (TYPE_NAME (super_type)))
    {
      parse_error_context (wfl, "Can't subclass final classes: %s",
			   IDENTIFIER_POINTER (DECL_NAME (super_decl)));
      return 1;
    }

  /* Check scope: same package OK, other package: OK if public */
  if (check_pkg_class_access (DECL_NAME (super_decl), wfl))
    return 1;
  
  SOURCE_FRONTEND_DEBUG (("Completing class %s with %s",
			  IDENTIFIER_POINTER (DECL_NAME (this_decl)),
			  IDENTIFIER_POINTER (DECL_NAME (super_decl))));
  return 0;
}

/* Create a new dependency list and link it (in a LIFO manner) to the
   CTXP list of type dependency list.  */

static void
create_jdep_list (ctxp)
     struct parser_ctxt *ctxp;
{
  jdeplist *new = (jdeplist *)xmalloc (sizeof (jdeplist));	
  new->first = new->last = NULL;
  new->next = ctxp->classd_list;
  ctxp->classd_list = new;
}

static jdeplist *
reverse_jdep_list (ctxp)
     struct parser_ctxt *ctxp;
{
  register jdeplist *prev = NULL, *current, *next;
  for (current = ctxp->classd_list; current; current = next)
    {
      next = current->next;
      current->next = prev;
      prev = current;
    }
  return prev;
}

/* Create a fake pointer based on the ID stored in
   TYPE_NAME. TYPE_NAME can be a WFL or a incomplete type asking to be
   registered again. */

static tree
obtain_incomplete_type (type_name)
     tree type_name;
{
  tree ptr, name;

  if (TREE_CODE (type_name) == EXPR_WITH_FILE_LOCATION)
    name = EXPR_WFL_NODE (type_name);
  else if (INCOMPLETE_TYPE_P (type_name))
    name = TYPE_NAME (type_name);
  else
    fatal ("invalid type name - obtain_incomplete_type");

  for (ptr = ctxp->incomplete_class; ptr; ptr = TREE_CHAIN (ptr))
    if (TYPE_NAME (ptr) == name)
      break;

  if (!ptr)
    {
      push_obstacks (&permanent_obstack, &permanent_obstack);
      BUILD_PTR_FROM_NAME (ptr, name);
      layout_type (ptr);
      pop_obstacks ();
      TREE_CHAIN (ptr) = ctxp->incomplete_class;
      ctxp->incomplete_class = ptr;
    }

  return ptr;
}

/* Register a incomplete type whose name is WFL. Reuse PTR if PTR is
   non NULL instead of computing a new fake type based on WFL. The new
   dependency is inserted in the current type dependency list, in FIFO
   manner.  */

static tree
register_incomplete_type (kind, wfl, decl, ptr)
     int kind;
     tree wfl, decl, ptr;
{
  jdep *new = (jdep *)xmalloc (sizeof (jdep));

  if (!ptr && kind != JDEP_METHOD_END) /* JDEP_METHOD_END is a mere marker */
    ptr = obtain_incomplete_type (wfl);

  JDEP_KIND (new) = kind;
  JDEP_DECL (new) = decl;
  JDEP_SOLV (new) = ptr;
  JDEP_WFL (new) = wfl;
  JDEP_CHAIN (new) = NULL;
  JDEP_MISC (new) = NULL_TREE;
  /* For some dependencies, set the enclosing class of the current
     class to be the enclosing context */
  if ((kind == JDEP_SUPER || kind == JDEP_INTERFACE || kind == JDEP_ANONYMOUS)
      && GET_ENCLOSING_CPC ())
    JDEP_ENCLOSING (new) = TREE_VALUE (GET_ENCLOSING_CPC ());
  else
    JDEP_ENCLOSING (new) = GET_CPC ();
  JDEP_GET_PATCH (new) = (tree *)NULL;

  JDEP_INSERT (ctxp->classd_list, new);

  return ptr;
}

void
java_check_circular_reference ()
{
  tree current;
  for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
    {
      tree type = TREE_TYPE (current);
      if (CLASS_INTERFACE (current))
	{
	  /* Check all interfaces this class extends */
	  tree basetype_vec = TYPE_BINFO_BASETYPES (type);
	  int n, i;

	  if (!basetype_vec)
	    return;
	  n = TREE_VEC_LENGTH (basetype_vec);
	  for (i = 0; i < n; i++)
	    {
	      tree vec_elt = TREE_VEC_ELT (basetype_vec, i);
	      if (vec_elt && BINFO_TYPE (vec_elt) != object_type_node 
		  && interface_of_p (type, BINFO_TYPE (vec_elt)))
		parse_error_context (lookup_cl (current),
				     "Cyclic interface inheritance");
	    }
	}
      else
	if (inherits_from_p (CLASSTYPE_SUPER (type), type))
	  parse_error_context (lookup_cl (current), 
			       "Cyclic class inheritance%s",
			       (cyclic_inheritance_report ?
				cyclic_inheritance_report : ""));
    }
}

/* Augment the parameter list PARM with parameters crafted to
   initialize outer context locals aliases. Through ARTIFICIAL, a
   count is kept of the number of crafted parameters. MODE governs
   what eventually gets created: something suitable for a function
   creation or a function invocation, either the constructor or
   $finit$.  */

static tree
build_alias_initializer_parameter_list (mode, class_type, parm, artificial)
    int mode;
    tree class_type, parm;
    int *artificial;
{
  tree field;
  for (field = TYPE_FIELDS (class_type); field; field = TREE_CHAIN (field))
    if (FIELD_LOCAL_ALIAS (field))
      {
	char *buffer = IDENTIFIER_POINTER (DECL_NAME (field));
	tree purpose = NULL_TREE, value = NULL_TREE, name = NULL_TREE;

	switch (mode)
	  {
	  case AIPL_FUNCTION_DECLARATION:
	    MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (buffer, &buffer [4]);
	    purpose = build_wfl_node (get_identifier (buffer));
	    if (TREE_CODE (TREE_TYPE (field)) == POINTER_TYPE)
	      value = build_wfl_node (TYPE_NAME (TREE_TYPE (field)));
	    else
	      value = TREE_TYPE (field);
	    break;

	  case AIPL_FUNCTION_CREATION:
	    MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (buffer, &buffer [4]);
	    purpose = get_identifier (buffer);
	    value = TREE_TYPE (field);
	    break;

	  case AIPL_FUNCTION_FINIT_INVOCATION:
	    MANGLE_ALIAS_INITIALIZER_PARAMETER_NAME_STR (buffer, &buffer [4]);
	    /* Now, this is wrong. purpose should always be the NAME
	       of something and value its matching value (decl, type,
	       etc...) FIXME -- but there is a lot to fix. */

	    /* When invoked for this kind of operation, we already
	       know whether a field is used or not. */
	    purpose = TREE_TYPE (field);
	    value = build_wfl_node (get_identifier (buffer));
	    break;

	  case AIPL_FUNCTION_CTOR_INVOCATION:
	    /* There are two case: the constructor invokation happends
	       outside the local inner, in which case, locales from the outer
	       context are directly used.

	       Otherwise, we fold to using the alias directly. */
	    if (class_type == current_class)
	      value = field;
	    else
	      {
		name = get_identifier (&buffer[4]);
		value = IDENTIFIER_LOCAL_VALUE (name);
	      }
	    break;
	  }
	parm = tree_cons (purpose, value, parm);
	if (artificial)
	  *artificial +=1;
      }
  return parm;
}

/* Craft a constructor for CLASS_DECL -- what we should do when none
   where found. ARGS is non NULL when a special signature must be
   enforced. This is the case for anonymous classes.  */

static void
craft_constructor (class_decl, args)
     tree class_decl, args;
{
  tree class_type = TREE_TYPE (class_decl);
  tree parm = NULL_TREE;
  int flags = (get_access_flags_from_decl (class_decl) & ACC_PUBLIC ?
	       ACC_PUBLIC : 0);
  int i = 0, artificial = 0;
  tree decl, ctor_name;
  char buffer [80];
  
  push_obstacks (&permanent_obstack, &permanent_obstack);

  /* The constructor name is <init> unless we're dealing with an
     anonymous class, in which case the name will be fixed after having
     be expanded. */
  if (ANONYMOUS_CLASS_P (class_type))
    ctor_name = DECL_NAME (class_decl);
  else
    ctor_name = init_identifier_node;

  /* If we're dealing with an inner class constructor, we hide the
     this$<n> decl in the name field of its parameter declaration. */
  if (PURE_INNER_CLASS_TYPE_P (class_type))
    {
      tree type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (class_type)));
      parm = tree_cons (build_current_thisn (class_type),
			build_pointer_type (type), parm);

      /* Some more arguments to be hidden here. The values of the local
	 variables of the outer context that the inner class needs to see. */
      parm = build_alias_initializer_parameter_list (AIPL_FUNCTION_CREATION,
						     class_type, parm, 
						     &artificial);
    }

  /* Then if there are any args to be enforced, enforce them now */
  for (; args && args != end_params_node; args = TREE_CHAIN (args))
    {
      sprintf (buffer, "parm%d", i++);
      parm = tree_cons (get_identifier (buffer), TREE_VALUE (args), parm);
    }

  CRAFTED_PARAM_LIST_FIXUP (parm);
  decl = create_artificial_method (class_type, flags, void_type_node, 
				   ctor_name, parm);
  fix_method_argument_names (parm, decl);
  /* Now, mark the artificial parameters. */
  DECL_FUNCTION_NAP (decl) = artificial;

  pop_obstacks ();
  DECL_CONSTRUCTOR_P (decl) = 1;
}


/* Fix the constructors. This will be called right after circular
   references have been checked. It is necessary to fix constructors
   early even if no code generation will take place for that class:
   some generated constructor might be required by the class whose
   compilation triggered this one to be simply loaded.  */

void
java_fix_constructors ()
{
  tree current;

  for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
    {
      tree class_type = TREE_TYPE (current);
      int saw_ctor = 0;
      tree decl;

      if (CLASS_INTERFACE (TYPE_NAME (class_type)))
	continue;

      for (decl = TYPE_METHODS (class_type); decl; decl = TREE_CHAIN (decl))
	{
	  if (DECL_CONSTRUCTOR_P (decl))
	    {
	      fix_constructors (decl);
	      saw_ctor = 1;
	    }
	}

      /* Anonymous class constructor can't be generated that early. */
      if (!saw_ctor && !ANONYMOUS_CLASS_P (class_type))
	craft_constructor (current, NULL_TREE);
    }
}

/* safe_layout_class just makes sure that we can load a class without
   disrupting the current_class, input_file, lineno, etc, information
   about the class processed currently.  */

void
safe_layout_class (class)
     tree class;
{
  tree save_current_class = current_class;
  char *save_input_filename = input_filename;
  int save_lineno = lineno;

  push_obstacks (&permanent_obstack, &permanent_obstack);

  layout_class (class);
  pop_obstacks ();

  current_class = save_current_class;
  input_filename = save_input_filename;
  lineno = save_lineno;
  CLASS_LOADED_P (class) = 1;
}

static tree
jdep_resolve_class (dep)
     jdep *dep;
{
  tree decl;

  if (JDEP_RESOLVED_P (dep))
    decl = JDEP_RESOLVED_DECL (dep);
  else
    {
      decl = resolve_class (JDEP_ENCLOSING (dep), JDEP_TO_RESOLVE (dep),
			    JDEP_DECL (dep), JDEP_WFL (dep));
      JDEP_RESOLVED (dep, decl);
    }
    
  if (!decl)
    complete_class_report_errors (dep);

  return decl;
}

/* Complete unsatisfied class declaration and their dependencies */

void
java_complete_class ()
{
  tree cclass;
  jdeplist *cclassd;
  int error_found;
  tree type;

  push_obstacks (&permanent_obstack, &permanent_obstack);

  /* Process imports and reverse the import on demand list */
  process_imports ();
  if (ctxp->import_demand_list)
    ctxp->import_demand_list = nreverse (ctxp->import_demand_list);

  /* Rever things so we have the right order */
  ctxp->class_list = nreverse (ctxp->class_list);
  ctxp->classd_list = reverse_jdep_list (ctxp);

  for (cclassd = ctxp->classd_list, cclass = ctxp->class_list; 
       cclass && cclassd; 
       cclass = TREE_CHAIN (cclass), cclassd = CLASSD_CHAIN (cclassd))
    {
      jdep *dep;
      for (dep = CLASSD_FIRST (cclassd); dep; dep = JDEP_CHAIN (dep))
	{
	  tree decl;
	  if (!(decl = jdep_resolve_class (dep)))
	    continue;

	  /* Now it's time to patch */
	  switch (JDEP_KIND (dep))
	    {
	    case JDEP_SUPER:
	      /* Simply patch super */
	      if (parser_check_super (decl, JDEP_DECL (dep), JDEP_WFL (dep)))
		continue;
	      BINFO_TYPE (TREE_VEC_ELT (BINFO_BASETYPES (TYPE_BINFO 
	        (TREE_TYPE (JDEP_DECL (dep)))), 0)) = TREE_TYPE (decl);
	      break;

	    case JDEP_FIELD:
	      {
		/* We do part of the job done in add_field */
		tree field_decl = JDEP_DECL (dep);
		tree field_type = TREE_TYPE (decl);
		push_obstacks (&permanent_obstack, &permanent_obstack);
		if (TREE_CODE (field_type) == RECORD_TYPE)
		  field_type = promote_type (field_type);
		pop_obstacks ();
		TREE_TYPE (field_decl) = field_type;
		DECL_ALIGN (field_decl) = 0;
		layout_decl (field_decl, 0);
		SOURCE_FRONTEND_DEBUG 
		  (("Completed field/var decl `%s' with `%s'",
		    IDENTIFIER_POINTER (DECL_NAME (field_decl)),
		    IDENTIFIER_POINTER (DECL_NAME (decl))));
		break;
	      }
	    case JDEP_METHOD:	/* We start patching a method */
	    case JDEP_METHOD_RETURN:
	      error_found = 0;
	      while (1)
		{
		  if (decl)
		    {
		      type = TREE_TYPE(decl);
		      if (TREE_CODE (type) == RECORD_TYPE)
			type = promote_type (type);
		      JDEP_APPLY_PATCH (dep, type);
		      SOURCE_FRONTEND_DEBUG 
			(((JDEP_KIND (dep) == JDEP_METHOD_RETURN ?
			   "Completing fct `%s' with ret type `%s'":
			   "Completing arg `%s' with type `%s'"),
			  IDENTIFIER_POINTER (EXPR_WFL_NODE 
					      (JDEP_DECL_WFL (dep))),
			  IDENTIFIER_POINTER (DECL_NAME (decl))));
		    }
		  else
		    error_found = 1;
		  dep = JDEP_CHAIN (dep);
		  if (JDEP_KIND (dep) == JDEP_METHOD_END)
		    break;
		  else
		    decl = jdep_resolve_class (dep);
		}
	      if (!error_found)
		{
		  tree mdecl = JDEP_DECL (dep), signature;
		  push_obstacks (&permanent_obstack, &permanent_obstack);
		  /* Recompute and reset the signature, check first that
		     all types are now defined. If they're not,
		     dont build the signature. */
		  if (check_method_types_complete (mdecl))
		    {
		      signature = build_java_signature (TREE_TYPE (mdecl));
		      set_java_signature (TREE_TYPE (mdecl), signature);
		    }
		  pop_obstacks ();
		}
	      else
		continue;
	      break;

	    case JDEP_INTERFACE:
	      if (parser_check_super_interface (decl, JDEP_DECL (dep),
						JDEP_WFL (dep)))
		continue;
	      parser_add_interface (JDEP_DECL (dep), decl, JDEP_WFL (dep));
	      break;

	    case JDEP_PARM:
	    case JDEP_VARIABLE:
	      type = TREE_TYPE(decl);
	      if (TREE_CODE (type) == RECORD_TYPE)
		type = promote_type (type);
	      JDEP_APPLY_PATCH (dep, type);
	      break;

	    case JDEP_TYPE:
	      JDEP_APPLY_PATCH (dep, TREE_TYPE (decl));
	      SOURCE_FRONTEND_DEBUG 
		(("Completing a random type dependency on a '%s' node",
		  tree_code_name [TREE_CODE (JDEP_DECL (dep))]));
	      break;

	    case JDEP_EXCEPTION:
	      JDEP_APPLY_PATCH (dep, TREE_TYPE (decl));
	      SOURCE_FRONTEND_DEBUG 
		(("Completing `%s' `throws' argument node",
		  IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep)))));
	      break;

	    case JDEP_ANONYMOUS:
	      patch_anonymous_class (decl, JDEP_DECL (dep), JDEP_WFL (dep));
	      break;

	    default:
	      fatal ("Can't handle patch code %d - java_complete_class",
		     JDEP_KIND (dep));
	    }
	}
    }
  pop_obstacks ();
  return;
}

/* Resolve class CLASS_TYPE. Handle the case of trying to resolve an
   array.  */

static tree
resolve_class (enclosing, class_type, decl, cl)
     tree enclosing, class_type, decl, cl;
{
  const char *name = IDENTIFIER_POINTER (TYPE_NAME (class_type));
  const char *base = name;
  tree resolved_type = TREE_TYPE (class_type);
  tree resolved_type_decl;
  
  if (resolved_type != NULL_TREE)
    {
      tree resolved_type_decl = TYPE_NAME (resolved_type);
      if (resolved_type_decl == NULL_TREE
	  || TREE_CODE (resolved_type_decl) == IDENTIFIER_NODE)
	{
	  resolved_type_decl = build_decl (TYPE_DECL,
					   TYPE_NAME (class_type),
					   resolved_type);
	}
      return resolved_type_decl;
    }

  /* 1- Check to see if we have an array. If true, find what we really
     want to resolve  */
  while (name[0] == '[')
    name++;
  if (base != name)
    TYPE_NAME (class_type) = get_identifier (name);

  /* 2- Resolve the bare type */
  if (!(resolved_type_decl = do_resolve_class (enclosing, class_type, 
					       decl, cl)))
    return NULL_TREE;
  resolved_type = TREE_TYPE (resolved_type_decl);

  /* 3- If we have and array, reconstruct the array down to its nesting */
  if (base != name)
    {
      while (base != name)
	{
	  if (TREE_CODE (resolved_type) == RECORD_TYPE)
	    resolved_type  = promote_type (resolved_type);
	  resolved_type = build_java_array_type (resolved_type, -1);
	  CLASS_LOADED_P (resolved_type) = 1;
	  name--;
	}
      /* Build a fake decl for this, since this is what is expected to
         be returned.  */
      resolved_type_decl =
	build_decl (TYPE_DECL, TYPE_NAME (resolved_type), resolved_type);
      /* Figure how those two things are important for error report. FIXME */
      DECL_SOURCE_LINE (resolved_type_decl) = 0;
      DECL_SOURCE_FILE (resolved_type_decl) = input_filename;
      TYPE_NAME (class_type) = TYPE_NAME (resolved_type);
    }
  TREE_TYPE (class_type) = resolved_type;
  return resolved_type_decl;
}

/* Effectively perform the resolution of class CLASS_TYPE. DECL or CL
   are used to report error messages.  */

tree
do_resolve_class (enclosing, class_type, decl, cl)
     tree enclosing, class_type, decl, cl;
{
  tree new_class_decl;
  tree original_name = NULL_TREE;

  /* Do not try to replace TYPE_NAME (class_type) by a variable, since
     its is changed by find_in_imports{_on_demand} */

  /* 0- Search in the current class as an inner class */

  /* Maybe some code here should be added to load the class or
     something, at least if the class isn't an inner class and ended
     being loaded from class file. FIXME. */
  while (enclosing)
    {
      tree name;

      if ((new_class_decl = find_as_inner_class (enclosing, class_type, cl)))
        return new_class_decl;

      /* Now go to the upper classes, bail out if necessary. */
      enclosing = CLASSTYPE_SUPER (TREE_TYPE (enclosing));
      if (!enclosing || enclosing == object_type_node)
	break;
      
      if (TREE_CODE (enclosing) == RECORD_TYPE)
	{
	  enclosing = TYPE_NAME (enclosing);
	  continue;
	}

      if (TREE_CODE (enclosing) == IDENTIFIER_NODE)
	{
	  BUILD_PTR_FROM_NAME (name, enclosing);
	}
      else
	name = enclosing;
      enclosing = do_resolve_class (NULL, name, NULL, NULL);
    }

  /* 1- Check for the type in single imports */
  if (find_in_imports (class_type))
    return NULL_TREE;

  /* 2- And check for the type in the current compilation unit. If it fails,
     try with a name qualified with the package name we've seen so far */
  if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type))))
    {
      if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)) &&
	  !CLASS_FROM_SOURCE_P (TREE_TYPE (new_class_decl)))
	load_class (TYPE_NAME (class_type), 0);
      return IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
    }

  original_name = TYPE_NAME (class_type);
  if (!QUALIFIED_P (TYPE_NAME (class_type)))
    {
      tree package;
      for (package = package_list; package; package = TREE_CHAIN (package))
  	{
 	  tree new_qualified;
 	  
 	  new_qualified = merge_qualified_name (TREE_PURPOSE (package),
 						original_name);
 	  TYPE_NAME (class_type) = new_qualified;
 	  new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
 	  if (!new_class_decl)
 	    load_class (TYPE_NAME (class_type), 0);
 	  new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
 	  if (new_class_decl)
 	    {
 	      if (!CLASS_LOADED_P (TREE_TYPE (new_class_decl)) &&
 		  !CLASS_FROM_SOURCE_P (TREE_TYPE (new_class_decl)))
 		load_class (TYPE_NAME (class_type), 0);
 	      return IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
 	    }
	}
    }

  TYPE_NAME (class_type) = original_name;

  /* 3- Check an other compilation unit that bears the name of type */
  load_class (TYPE_NAME (class_type), 0);
  if (check_pkg_class_access (TYPE_NAME (class_type), 
			      (cl ? cl : lookup_cl (decl))))
    return NULL_TREE;

  if ((new_class_decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type))))
    return new_class_decl;

  /* 4- Check the import on demands. Don't allow bar.baz to be
     imported from foo.* */
  if (!QUALIFIED_P (TYPE_NAME (class_type)))
    if (find_in_imports_on_demand (class_type))
      return NULL_TREE;

  /* 5- Last call for a resolution */
  return IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
}

/* Resolve NAME and lay it out (if not done and if not the current
   parsed class). Return a decl node. This function is meant to be
   called when type resolution is necessary during the walk pass.  */

static tree
resolve_and_layout (something, cl)
     tree something;
     tree cl;
{
  tree decl;

  /* Don't do that on the current class */
  if (something == current_class)
    return TYPE_NAME (current_class);

  /* Don't do anything for void and other primitive types */
  if (JPRIMITIVE_TYPE_P (something) || something == void_type_node)
    return NULL_TREE;

  /* Pointer types can be reall pointer types or fake pointers. When
     finding a real pointer, recheck for primitive types */
  if (TREE_CODE (something) == POINTER_TYPE)
    {
      if (TREE_TYPE (something))
	{
	  something = TREE_TYPE (something);
	  if (JPRIMITIVE_TYPE_P (something) || something == void_type_node)
	    return NULL_TREE;
	}
      else
	something = TYPE_NAME (something);
    }

  /* Don't do anything for arrays of primitive types */
  if (TREE_CODE (something) == RECORD_TYPE && TYPE_ARRAY_P (something)
      && JPRIMITIVE_TYPE_P (TYPE_ARRAY_ELEMENT (something)))
    return NULL_TREE;

  /* Something might be a WFL */
  if (TREE_CODE (something) == EXPR_WITH_FILE_LOCATION)
    something = EXPR_WFL_NODE (something);

  /* Otherwise, if something is not and IDENTIFIER_NODE, it can be a a
     TYPE_DECL or a real TYPE */
  else if (TREE_CODE (something) != IDENTIFIER_NODE)
    something = (TREE_CODE (TYPE_NAME (something)) == TYPE_DECL ?
	    DECL_NAME (TYPE_NAME (something)) : TYPE_NAME (something));

  if (!(decl = resolve_no_layout (something, cl)))
    return NULL_TREE;

  /* Resolve and layout if necessary */
  layout_class_methods (TREE_TYPE (decl));
  /* Check methods, but only once */
  if (CLASS_FROM_SOURCE_P (TREE_TYPE (decl)) 
      && !CLASS_LOADED_P (TREE_TYPE (decl)))
    CHECK_METHODS (decl);
  if (TREE_TYPE (decl) != current_class && !CLASS_LOADED_P (TREE_TYPE (decl)))
    safe_layout_class (TREE_TYPE (decl));

  return decl;
}

/* Resolve a class, returns its decl but doesn't perform any
   layout. The current parsing context is saved and restored */

static tree
resolve_no_layout (name, cl)
     tree name, cl;
{
  tree ptr, decl;
  BUILD_PTR_FROM_NAME (ptr, name);
  java_parser_context_save_global ();
  decl = resolve_class (TYPE_NAME (current_class), ptr, NULL_TREE, cl);
  java_parser_context_restore_global ();
  
  return decl;
}

/* Called when reporting errors. Skip leader '[' in a complex array
   type description that failed to be resolved.  */

static const char *
purify_type_name (name)
     const char *name;
{
  while (*name && *name == '[')
    name++;
  return name;
}

/* The type CURRENT refers to can't be found. We print error messages.  */

static void
complete_class_report_errors (dep)
     jdep *dep;
{
  const char *name;

  if (!JDEP_WFL (dep))
    return;

  name = IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep)));
  switch (JDEP_KIND (dep))
    {
    case JDEP_SUPER:
      parse_error_context  
	(JDEP_WFL (dep), "Superclass `%s' of class `%s' not found",
	 purify_type_name (name),
	 IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
      break;
    case JDEP_FIELD:
      parse_error_context
	(JDEP_WFL (dep), "Type `%s' not found in declaration of field `%s'",
	 purify_type_name (name),
	 IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
      break;
    case JDEP_METHOD:		/* Covers arguments */
      parse_error_context
	(JDEP_WFL (dep), "Type `%s' not found in the declaration of the argument `%s' of method `%s'",
	 purify_type_name (name),
	 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_DECL_WFL (dep))),
	 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_MISC (dep))));
      break;
    case JDEP_METHOD_RETURN:	/* Covers return type */
      parse_error_context
	(JDEP_WFL (dep), "Type `%s' not found in the declaration of the return type of method `%s'", 
	 purify_type_name (name),
	 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_DECL_WFL (dep))));
      break;
    case JDEP_INTERFACE:
      parse_error_context
	(JDEP_WFL (dep), "Superinterface `%s' of %s `%s' not found",
	 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))),
	 (CLASS_OR_INTERFACE (JDEP_DECL (dep), "class", "interface")),
	 IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
      break;
    case JDEP_VARIABLE:
      parse_error_context
	(JDEP_WFL (dep), "Type `%s' not found in the declaration of the local variable `%s'", 
	 purify_type_name (IDENTIFIER_POINTER 
			   (EXPR_WFL_NODE (JDEP_WFL (dep)))),
	 IDENTIFIER_POINTER (DECL_NAME (JDEP_DECL (dep))));
      break;
    case JDEP_EXCEPTION:	/* As specified by `throws' */
      parse_error_context 
	  (JDEP_WFL (dep), "Class `%s' not found in `throws'",
	 IDENTIFIER_POINTER (EXPR_WFL_NODE (JDEP_WFL (dep))));
      break;
    default:
      /* Fix for -Wall. Just break doing nothing. The error will be
         caught later */
      break;
    }
}

/* Return a static string containing the DECL prototype string. If
   DECL is a constructor, use the class name instead of the form
   <init> */

static const char *
get_printable_method_name (decl)
     tree decl;
{
  const char *to_return;
  tree name = NULL_TREE;

  if (DECL_CONSTRUCTOR_P (decl))
    {
      name = DECL_NAME (decl);
      DECL_NAME (decl) = DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)));
    }
      
  to_return = lang_printable_name (decl, 0);
  if (DECL_CONSTRUCTOR_P (decl))
    DECL_NAME (decl) = name;
  
  return to_return;
}

/* Reinstall the proper DECL_NAME on METHOD. Return 0 if the method
   nevertheless needs to be verfied, 1 otherwise.  */

static int
reset_method_name (method)
     tree method;
{
  if (!DECL_CLINIT_P (method) && !DECL_FINIT_P (method))
    {
      /* NAME is just the plain name when Object is being defined */
      if (DECL_CONTEXT (method) != object_type_node)
	DECL_NAME (method) = (DECL_CONSTRUCTOR_P (method) ? 
			      init_identifier_node : GET_METHOD_NAME (method));
      return 0;
    }
  else 
    return 1;
}

/* Return the name of METHOD_DECL, when DECL_NAME is a WFL */

tree
java_get_real_method_name (method_decl)
     tree method_decl;
{
  tree method_name = DECL_NAME (method_decl);
  if (DECL_CONSTRUCTOR_P (method_decl))
    return init_identifier_node;

  /* Explain here why METHOD_DECL doesn't have the DECL_CONSTRUCTUR_P
     and still can be a constructor. FIXME */

  /* Don't confuse method only bearing the name of their class as
     constructors */
  else if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (method_decl))
	   && ctxp
	   && GET_CPC_UN () == EXPR_WFL_NODE (method_name)
	   && get_access_flags_from_decl (method_decl) <= ACC_PROTECTED
	   && TREE_TYPE (TREE_TYPE (method_decl)) == void_type_node)
    return init_identifier_node;
  else
    return EXPR_WFL_NODE (method_name);
}

/* Track method being redefined inside the same class. As a side
   effect, set DECL_NAME to an IDENTIFIER (prior entering this
   function it's a FWL, so we can track errors more accurately.)  */

static int
check_method_redefinition (class, method)
     tree class, method;
{
  tree redef, name;
  tree cl = DECL_NAME (method);
  tree sig = TYPE_ARGUMENT_SIGNATURE (TREE_TYPE (method));
  /* decl name of artificial <clinit> and $finit$ doesn't need to be
     fixed and checked */

  /* Reset the method name before running the check. If it returns 1,
     the method doesn't need to be verified with respect to method
     redeclaration and we return 0 */
  if (reset_method_name (method))
    return 0;

  name = DECL_NAME (method);
  for (redef = TYPE_METHODS (class); redef; redef = TREE_CHAIN (redef))
    {
      if (redef == method)
	break;
      if (DECL_NAME (redef) == name 
	  && sig == TYPE_ARGUMENT_SIGNATURE (TREE_TYPE (redef)))
	{
	  parse_error_context 
	    (cl, "Duplicate %s declaration `%s'",
	     (DECL_CONSTRUCTOR_P (redef) ? "constructor" : "method"),
	     get_printable_method_name (redef));
	  return 1;
	}
    }
  return 0;
}

static void
check_abstract_method_definitions (do_interface, class_decl, type)
     int do_interface;
     tree class_decl, type;
{
  tree class = TREE_TYPE (class_decl);
  tree method, end_type;

  end_type = (do_interface ? object_type_node : type);
  for (method = TYPE_METHODS (type); method; method = TREE_CHAIN (method))
    {
      tree other_super, other_method, method_sig, method_name;
      int found = 0;
      int end_type_reached = 0;
      
      if (!METHOD_ABSTRACT (method) || METHOD_FINAL (method))
	continue;
      
      /* Now verify that somewhere in between TYPE and CLASS,
	 abstract method METHOD gets a non abstract definition
	 that is inherited by CLASS.  */
      
      method_sig = build_java_signature (TREE_TYPE (method));
      method_name = DECL_NAME (method);
      if (TREE_CODE (method_name) == EXPR_WITH_FILE_LOCATION)
	method_name = EXPR_WFL_NODE (method_name);

      other_super = class;
      do {
	if (other_super == end_type)
	  end_type_reached = 1;
	
	/* Method search */
	for (other_method = TYPE_METHODS (other_super); other_method;
            other_method = TREE_CHAIN (other_method))
	  {
	    tree s = build_java_signature (TREE_TYPE (other_method));
	    tree other_name = DECL_NAME (other_method);
	    
	    if (TREE_CODE (other_name) == EXPR_WITH_FILE_LOCATION)
	      other_name = EXPR_WFL_NODE (other_name);
	    if (!DECL_CLINIT_P (other_method)
		&& !DECL_CONSTRUCTOR_P (other_method)
		&& method_name == other_name && method_sig == s)
             {
               found = 1;
               break;
             }
	  }
	other_super = CLASSTYPE_SUPER (other_super);
      } while (!end_type_reached);
 
      /* Report that abstract METHOD didn't find an implementation
	 that CLASS can use. */
      if (!found)
	{
	  char *t = xstrdup (lang_printable_name 
			    (TREE_TYPE (TREE_TYPE (method)), 0));
	  tree ccn = DECL_NAME (TYPE_NAME (DECL_CONTEXT (method)));
	  tree saved_wfl = NULL_TREE;
	  
	  if (TREE_CODE (DECL_NAME (method)) == EXPR_WITH_FILE_LOCATION)
	    {
	      saved_wfl = DECL_NAME (method);
	      DECL_NAME (method) = EXPR_WFL_NODE (DECL_NAME (method));
	    }
	  
	  parse_error_context 
	    (lookup_cl (class_decl),
	     "Class `%s' doesn't define the abstract method `%s %s' from %s `%s'. This method must be defined or %s `%s' must be declared abstract",
	     IDENTIFIER_POINTER (DECL_NAME (class_decl)),
	     t, lang_printable_name (method, 0), 
	     (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method))) ? 
	      "interface" : "class"),
	     IDENTIFIER_POINTER (ccn),
	     (CLASS_INTERFACE (class_decl) ? "interface" : "class"),
	     IDENTIFIER_POINTER (DECL_NAME (class_decl)));
	  
	  free (t);
	  
	  if (saved_wfl)
	    DECL_NAME (method) = saved_wfl;
	}
    }
}

/* Check that CLASS_DECL somehow implements all inherited abstract
   methods.  */

static void
java_check_abstract_method_definitions (class_decl)
     tree class_decl;
{
  tree class = TREE_TYPE (class_decl);
  tree super, vector;
  int i;

  if (CLASS_ABSTRACT (class_decl))
    return;

  /* Check for inherited types */
  super = class;
  do {
    super = CLASSTYPE_SUPER (super);
    check_abstract_method_definitions (0, class_decl, super);
  } while (super != object_type_node);

  /* Check for implemented interfaces. */
  vector = TYPE_BINFO_BASETYPES (class);
  for (i = 1; i < TREE_VEC_LENGTH (vector); i++)
    {
      super = BINFO_TYPE (TREE_VEC_ELT (vector, i));
      check_abstract_method_definitions (1, class_decl, super);
    }
}

/* Check all the types method DECL uses and return 1 if all of them
   are now complete, 0 otherwise. This is used to check whether its
   safe to build a method signature or not.  */

static int
check_method_types_complete (decl)
     tree decl;
{
  tree type = TREE_TYPE (decl);
  tree args;

  if (!INCOMPLETE_TYPE_P (TREE_TYPE (type)))
    return 0;
  
  args = TYPE_ARG_TYPES (type);
  if (TREE_CODE (type) == METHOD_TYPE)
    args = TREE_CHAIN (args);
  for (; args != end_params_node; args = TREE_CHAIN (args))
    if (INCOMPLETE_TYPE_P (TREE_VALUE (args)))
      return 0;

  return 1;
}

/* Check all the methods of CLASS_DECL. Methods are first completed
   then checked according to regular method existance rules.  If no
   constructor for CLASS_DECL were encountered, then build its
   declaration.  */

static void
java_check_regular_methods (class_decl)
     tree class_decl;
{
  int saw_constructor = ANONYMOUS_CLASS_P (TREE_TYPE (class_decl));
  tree method;
  tree class = CLASS_TO_HANDLE_TYPE (TREE_TYPE (class_decl));
  tree saved_found_wfl = NULL_TREE, found = NULL_TREE;
  tree mthrows;

  /* It is not necessary to check methods defined in java.lang.Object */
  if (class == object_type_node)
    return;

  if (!TYPE_NVIRTUALS (class))
    TYPE_METHODS (class) = nreverse (TYPE_METHODS (class));

  /* Should take interfaces into account. FIXME */
  for (method = TYPE_METHODS (class); method; method = TREE_CHAIN (method))
    {
      tree sig;
      tree method_wfl = DECL_NAME (method);
      int aflags;

      /* If we previously found something and its name was saved,
         reinstall it now */
      if (found && saved_found_wfl)
	{
	  DECL_NAME (found) = saved_found_wfl;
	  saved_found_wfl = NULL_TREE;
	}

      /* Check for redefinitions */
      if (check_method_redefinition (class, method))
	continue;

      /* If we see one constructor a mark so we don't generate the
	 default one. Also skip other verifications: constructors
	 can't be inherited hence hiden or overriden */
     if (DECL_CONSTRUCTOR_P (method))
       {
	 saw_constructor = 1;
	 continue;
       }

      /* We verify things thrown by the method. They must inherits from
	 java.lang.Throwable */
      for (mthrows = DECL_FUNCTION_THROWS (method);
	   mthrows; mthrows = TREE_CHAIN (mthrows))
	{
	  if (!inherits_from_p (TREE_VALUE (mthrows), throwable_type_node))
	    parse_error_context 
	      (TREE_PURPOSE (mthrows), "Class `%s' in `throws' clause must be a subclass of class `java.lang.Throwable'",
	       IDENTIFIER_POINTER 
	         (DECL_NAME (TYPE_NAME (TREE_VALUE (mthrows)))));
	}

      sig = build_java_argument_signature (TREE_TYPE (method));
      found = lookup_argument_method2 (class, DECL_NAME (method), sig);

      /* Inner class can't declare static methods */
      if (METHOD_STATIC (method) && !TOPLEVEL_CLASS_DECL_P (class_decl))
	{
	  char *t = xstrdup (lang_printable_name (class, 0));
	  parse_error_context 
	    (method_wfl, "Method `%s' can't be static in inner class `%s'. Only members of interfaces and top-level classes can be static",
	     lang_printable_name (method, 0), t);
	  free (t);
	}

      /* Nothing overrides or it's a private method. */
      if (!found)
	continue;
      if (METHOD_PRIVATE (found))
	{
	  found = NULL_TREE;
	  continue;
	}

      /* If found wasn't verified, it's DECL_NAME won't be set properly. 
	 We set it temporarily for the sake of the error report. */
      saved_found_wfl = DECL_NAME (found);
      reset_method_name (found);

      /* If `found' is declared in an interface, make sure the
	 modifier matches. */
      if (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (found))) 
	  && clinit_identifier_node != DECL_NAME (found)
	  && !METHOD_PUBLIC (method))
	{
	  tree found_decl = TYPE_NAME (DECL_CONTEXT (found));
	  parse_error_context (method_wfl, "Class `%s' must override `%s' with a public method in order to implement interface `%s'",
			       IDENTIFIER_POINTER (DECL_NAME (class_decl)),
			       lang_printable_name (method, 0),
			       IDENTIFIER_POINTER (DECL_NAME (found_decl)));
	}

      /* Can't override a method with the same name and different return
	 types. */
      if (TREE_TYPE (TREE_TYPE (found)) != TREE_TYPE (TREE_TYPE (method)))
	{
	  char *t = xstrdup 
	    (lang_printable_name (TREE_TYPE (TREE_TYPE (found)), 0));
	  parse_error_context 
	    (method_wfl,
	     "Method `%s' was defined with return type `%s' in class `%s'", 
	     lang_printable_name (found, 0), t,
	     IDENTIFIER_POINTER 
	       (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
	  free (t);
	}

      aflags = get_access_flags_from_decl (found);
      /* If the method has default, access in an other package, then
	 issue a warning that the current method doesn't override the
	 one that was found elsewhere. Do not issue this warning when
	 the match was found in java.lang.Object.  */
      if (DECL_CONTEXT (found) != object_type_node
	  && ((aflags & ACC_VISIBILITY) == 0)
	  && !class_in_current_package (DECL_CONTEXT (found))
	  && !DECL_CLINIT_P (found)
	  && flag_not_overriding)
        {
	  parse_warning_context 
	    (method_wfl, "Method `%s' in class `%s' does not override the corresponding method in class `%s', which is private to a different package",
	     lang_printable_name (found, 0),
	     IDENTIFIER_POINTER (DECL_NAME (class_decl)),
	     IDENTIFIER_POINTER (DECL_NAME 
				 (TYPE_NAME (DECL_CONTEXT (found)))));
	  continue;
	}

      /* Can't override final. Can't override static. */
      if (METHOD_FINAL (found) || METHOD_STATIC (found))
	{
	  /* Static *can* override static */
	  if (METHOD_STATIC (found) && METHOD_STATIC (method))
	    continue;
	  parse_error_context 
	    (method_wfl,
	     "%s methods can't be overriden. Method `%s' is %s in class `%s'",
	     (METHOD_FINAL (found) ? "Final" : "Static"),
	     lang_printable_name (found, 0),
	     (METHOD_FINAL (found) ? "final" : "static"),
	     IDENTIFIER_POINTER
	       (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
	  continue;
	}

      /* Static method can't override instance method. */
      if (METHOD_STATIC (method))
	{
	  parse_error_context 
	    (method_wfl,
	     "Instance methods can't be overriden by a static method. Method `%s' is an instance method in class `%s'",
	     lang_printable_name (found, 0),
	     IDENTIFIER_POINTER
	       (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
	  continue;
	}

      /* - Overriding/hiding public must be public
	 - Overriding/hiding protected must be protected or public
         - If the overriden or hidden method has default (package)
           access, then the overriding or hiding method must not be
           private; otherwise, a compile-time error occurs.  If
           `found' belongs to an interface, things have been already
           taken care of.  */
      if (!CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (found)))
	  && ((METHOD_PUBLIC (found) && !METHOD_PUBLIC (method))
	      || (METHOD_PROTECTED (found) 
		  && !(METHOD_PUBLIC (method) || METHOD_PROTECTED (method)))
	      || (!(aflags & (ACC_PUBLIC | ACC_PRIVATE | ACC_STATIC))
		  && METHOD_PRIVATE (method))))
	{
	  parse_error_context 
	    (method_wfl,
	     "Methods can't be overridden to be more private. Method `%s' is not %s in class `%s'", lang_printable_name (method, 0),
	     (METHOD_PUBLIC (method) ? "public" : 
	      (METHOD_PRIVATE (method) ? "private" : "protected")),
	     IDENTIFIER_POINTER (DECL_NAME 
				 (TYPE_NAME (DECL_CONTEXT (found)))));
	  continue;
	}

      /* Overriding methods must have compatible `throws' clauses on checked
	 exceptions, if any */
      check_throws_clauses (method, method_wfl, found);

      /* Inheriting multiple methods with the same signature. FIXME */
    }
  
  /* Don't forget eventual pending found and saved_found_wfl. Take
     into account that we might have exited because we saw an
     artificial method as the last entry. */

  if (found && !DECL_ARTIFICIAL (found) && saved_found_wfl)
    DECL_NAME (found) = saved_found_wfl;

  if (!TYPE_NVIRTUALS (class))
    TYPE_METHODS (class) = nreverse (TYPE_METHODS (class));

  /* Search for inherited abstract method not yet implemented in this
     class.  */
  java_check_abstract_method_definitions (class_decl);

  if (!saw_constructor)
    fatal ("No constructor found");
}

/* Return a non zero value if the `throws' clause of METHOD (if any)
   is incompatible with the `throws' clause of FOUND (if any).  */

static void
check_throws_clauses (method, method_wfl, found)
     tree method, method_wfl, found;
{
  tree mthrows, fthrows;

  /* Can't check these things with class loaded from bytecode. FIXME */
  if (!CLASS_FROM_SOURCE_P (DECL_CONTEXT (found)))
    return;

  for (mthrows = DECL_FUNCTION_THROWS (method);
       mthrows; mthrows = TREE_CHAIN (mthrows))
    {
      /* We don't verify unchecked expressions */
      if (IS_UNCHECKED_EXCEPTION_P (TREE_VALUE (mthrows)))
	continue;
      /* Checked expression must be compatible */
      for (fthrows = DECL_FUNCTION_THROWS (found); 
	   fthrows; fthrows = TREE_CHAIN (fthrows))
	if (inherits_from_p (TREE_VALUE (mthrows), TREE_VALUE (fthrows)))
	  break;
      if (!fthrows)
	{
	  parse_error_context 
	    (method_wfl, "Invalid checked exception class `%s' in `throws' clause. The exception must be a subclass of an exception thrown by `%s' from class `%s'",
	     IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (TREE_VALUE (mthrows)))),
	     lang_printable_name (found, 0),
	     IDENTIFIER_POINTER 
	       (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
	}
    }
}

/* Check abstract method of interface INTERFACE */

static void
java_check_abstract_methods (interface_decl)
     tree interface_decl;
{
  int i, n;
  tree method, basetype_vec, found;
  tree interface = TREE_TYPE (interface_decl);

  for (method = TYPE_METHODS (interface); method; method = TREE_CHAIN (method))
    {
      tree method_wfl = DECL_NAME (method);

      /* 2- Check for double definition inside the defining interface */
      if (check_method_redefinition (interface, method))
	continue;

      /* 3- Overriding is OK as far as we preserve the return type and
	 the thrown exceptions (FIXME) */
      found = lookup_java_interface_method2 (interface, method);
      if (found)
	{
	  char *t;
	  tree saved_found_wfl = DECL_NAME (found);
	  reset_method_name (found);
	  t = xstrdup (lang_printable_name (TREE_TYPE (TREE_TYPE (found)), 0));
	  parse_error_context 
	    (method_wfl,
	     "Method `%s' was defined with return type `%s' in class `%s'",
	     lang_printable_name (found, 0), t,
	     IDENTIFIER_POINTER 
	       (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
	  free (t);
	  DECL_NAME (found) = saved_found_wfl;
	  continue;
	}
    }

  /* 4- Inherited methods can't differ by their returned types */
  if (!(basetype_vec = TYPE_BINFO_BASETYPES (interface)))
    return;
  n = TREE_VEC_LENGTH (basetype_vec);
  for (i = 0; i < n; i++)
    {
      tree sub_interface_method, sub_interface;
      tree vec_elt = TREE_VEC_ELT (basetype_vec, i);
      if (!vec_elt)
	continue;
      sub_interface = BINFO_TYPE (vec_elt);
      for (sub_interface_method = TYPE_METHODS (sub_interface); 
	   sub_interface_method;
	   sub_interface_method = TREE_CHAIN (sub_interface_method))
	{
	  found = lookup_java_interface_method2 (interface, 
						 sub_interface_method);
	  if (found && (found != sub_interface_method))
	    {
	      tree saved_found_wfl = DECL_NAME (found);
	      reset_method_name (found);
	      parse_error_context 
		(lookup_cl (sub_interface_method),
		 "Interface `%s' inherits method `%s' from interface `%s'. This method is redefined with a different return type in interface `%s'",
		 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (interface))),
		 lang_printable_name (found, 0),
		 IDENTIFIER_POINTER 
		   (DECL_NAME (TYPE_NAME 
			       (DECL_CONTEXT (sub_interface_method)))),
		 IDENTIFIER_POINTER 
	           (DECL_NAME (TYPE_NAME (DECL_CONTEXT (found)))));
	      DECL_NAME (found) = saved_found_wfl;
	    }
	}
    }
}

/* Lookup methods in interfaces using their name and partial
   signature. Return a matching method only if their types differ.  */

static tree
lookup_java_interface_method2 (class, method_decl)
     tree class, method_decl;
{
  int i, n;
  tree basetype_vec = TYPE_BINFO_BASETYPES (class), to_return;

  if (!basetype_vec)
    return NULL_TREE;

  n = TREE_VEC_LENGTH (basetype_vec);
  for (i = 0; i < n; i++)
    {
      tree vec_elt = TREE_VEC_ELT (basetype_vec, i), to_return;
      if ((BINFO_TYPE (vec_elt) != object_type_node)
	  && (to_return = 
	      lookup_java_method2 (BINFO_TYPE (vec_elt), method_decl, 1)))
	return to_return;
    }
  for (i = 0; i < n; i++)
    {
      to_return = lookup_java_interface_method2 
	(BINFO_TYPE (TREE_VEC_ELT (basetype_vec, i)), method_decl);
      if (to_return)
	return to_return;
    }

  return NULL_TREE;
}

/* Lookup method using their name and partial signature. Return a
   matching method only if their types differ.  */

static tree
lookup_java_method2 (clas, method_decl, do_interface)
     tree clas, method_decl;
     int do_interface;
{
  tree method, method_signature, method_name, method_type, name;

  method_signature = build_java_argument_signature (TREE_TYPE (method_decl));
  name = DECL_NAME (method_decl);
  method_name = (TREE_CODE (name) == EXPR_WITH_FILE_LOCATION ? 
		 EXPR_WFL_NODE (name) : name);
  method_type = TREE_TYPE (TREE_TYPE (method_decl));

  while (clas != NULL_TREE)
    {
      for (method = TYPE_METHODS (clas);
	   method != NULL_TREE;  method = TREE_CHAIN (method))
	{
	  tree method_sig = build_java_argument_signature (TREE_TYPE (method));
	  tree name = DECL_NAME (method);
	  if ((TREE_CODE (name) == EXPR_WITH_FILE_LOCATION ?
	       EXPR_WFL_NODE (name) : name) == method_name
	      && method_sig == method_signature 
	      && TREE_TYPE (TREE_TYPE (method)) != method_type)
	    return method;
	}
      clas = (do_interface ? NULL_TREE : CLASSTYPE_SUPER (clas));
    }
  return NULL_TREE;
}

/* Return the line that matches DECL line number, and try its best to
   position the column number. Used during error reports.  */

static tree
lookup_cl (decl)
     tree decl;
{
  static tree cl = NULL_TREE;
  char *line, *found;
  
  if (!decl)
    return NULL_TREE;

  if (cl == NULL_TREE)
    cl = build_expr_wfl (NULL_TREE, NULL, 0, 0);

  EXPR_WFL_FILENAME_NODE (cl) = get_identifier (DECL_SOURCE_FILE (decl));
  EXPR_WFL_SET_LINECOL (cl, DECL_SOURCE_LINE_FIRST (decl), -1);

  line = java_get_line_col (IDENTIFIER_POINTER (EXPR_WFL_FILENAME_NODE (cl)),
			    EXPR_WFL_LINENO (cl), EXPR_WFL_COLNO (cl));

  found = strstr ((const char *)line, 
		  (const char *)IDENTIFIER_POINTER (DECL_NAME (decl)));
  if (found)
    EXPR_WFL_SET_LINECOL (cl, EXPR_WFL_LINENO (cl), found - line);

  return cl;
}

/* Look for a simple name in the single-type import list */

static tree
find_name_in_single_imports (name)
     tree name;
{
  tree node;

  for (node = ctxp->import_list; node; node = TREE_CHAIN (node))
    if (TREE_VALUE (node) == name)
      return (EXPR_WFL_NODE (TREE_PURPOSE (node)));

  return NULL_TREE;
}

/* Process all single-type import. */

static int
process_imports ()
{
  tree import;
  int error_found;

  for (import = ctxp->import_list; import; import = TREE_CHAIN (import))
    {
      tree to_be_found = EXPR_WFL_NODE (TREE_PURPOSE (import));

      /* Don't load twice something already defined. */
      if (IDENTIFIER_CLASS_VALUE (to_be_found))
	continue;
      QUALIFIED_P (to_be_found) = 1;
      load_class (to_be_found, 0);
      error_found =
	check_pkg_class_access (to_be_found, TREE_PURPOSE (import));
      if (!IDENTIFIER_CLASS_VALUE (to_be_found))
	{
	  parse_error_context (TREE_PURPOSE (import),
			       "Class or interface `%s' not found in import",
			       IDENTIFIER_POINTER (to_be_found));
	  return 1;
	}
      if (error_found)
	return 1;
    }
  return 0;
}

/* Possibly find a class imported by a single-type import statement. Return
   1 if an error occured, 0 otherwise. */

static int
find_in_imports (class_type)
     tree class_type;
{
  tree import;

  for (import = ctxp->import_list; import; import = TREE_CHAIN (import))
    if (TREE_VALUE (import) == TYPE_NAME (class_type))
      {
	TYPE_NAME (class_type) = EXPR_WFL_NODE (TREE_PURPOSE (import));
	QUALIFIED_P (TYPE_NAME (class_type)) = 1;
      }
  return 0;
}

static int
note_possible_classname (name, len)
     const char *name;
     int len;
{
  tree node;
  if (len > 5 && strncmp (&name [len-5], ".java", 5) == 0)
    len = len - 5;
  else if (len > 6 && strncmp (&name [len-6], ".class", 6) == 0)
    len = len - 6;
  else
    return 0;
  node = ident_subst (name, len, "", '/', '.', "");
  IS_A_CLASSFILE_NAME (node) = 1; /* Or soon to be */
  QUALIFIED_P (node) = strchr (name, '/') ? 1 : 0;
  return 1;
}

/* Read a import directory, gathering potential match for further type
   references. Indifferently reads a filesystem or a ZIP archive
   directory.  */

static void
read_import_dir (wfl)
     tree wfl;
{
  tree package_id = EXPR_WFL_NODE (wfl);
  const char *package_name = IDENTIFIER_POINTER (package_id);
  int package_length = IDENTIFIER_LENGTH (package_id);
  DIR *dirp = NULL;
  JCF *saved_jcf = current_jcf;

  int found = 0;
  int k;
  void *entry;
  struct buffer filename[1];


  if (IS_AN_IMPORT_ON_DEMAND_P (package_id))
    return;
  IS_AN_IMPORT_ON_DEMAND_P (package_id) = 1;

  BUFFER_INIT (filename);
  buffer_grow (filename, package_length + 100);

  for (entry = jcf_path_start (); entry != NULL; entry = jcf_path_next (entry))
    {
      const char *entry_name = jcf_path_name (entry);
      int entry_length = strlen (entry_name);
      if (jcf_path_is_zipfile (entry))
	{
	  ZipFile *zipf;
	  buffer_grow (filename, entry_length);
	  memcpy (filename->data, entry_name, entry_length - 1);
	  filename->data[entry_length-1] = '\0';
	  zipf = opendir_in_zip (filename->data, jcf_path_is_system (entry));
	  if (zipf == NULL)
	    error ("malformed .zip archive in CLASSPATH: %s", entry_name);
	  else
	    {
	      ZipDirectory *zipd = (ZipDirectory *) zipf->central_directory;
	      BUFFER_RESET (filename);
	      for (k = 0; k < package_length; k++)
		{
		  char ch = package_name[k];
		  *filename->ptr++ = ch == '.' ? '/' : ch;
		}
	      *filename->ptr++ = '/';

	      for (k = 0; k < zipf->count;  k++, zipd = ZIPDIR_NEXT (zipd))
		{
		  const char *current_entry = ZIPDIR_FILENAME (zipd);
		  int current_entry_len = zipd->filename_length;

		  if (current_entry_len >= BUFFER_LENGTH (filename)
		      && strncmp (filename->data, current_entry, 
				  BUFFER_LENGTH (filename)) != 0)
		    continue;
		  found |= note_possible_classname (current_entry,
						    current_entry_len);
		}
	    }
	}
      else
	{
	  BUFFER_RESET (filename);
	  buffer_grow (filename, entry_length + package_length + 4);
	  strcpy (filename->data, entry_name);
	  filename->ptr = filename->data + entry_length;
	  for (k = 0; k < package_length; k++)
	    {
	      char ch = package_name[k];
	      *filename->ptr++ = ch == '.' ? '/' : ch;
	    }
	  *filename->ptr = '\0';

	  dirp = opendir (filename->data);
	  if (dirp == NULL)
	    continue;
	  *filename->ptr++ = '/';
	  for (;;)
	    {
	      int len; 
	      const char *d_name;
	      struct dirent *direntp = readdir (dirp);
	      if (!direntp)
		break;
	      d_name = direntp->d_name;
	      len = strlen (direntp->d_name);
	      buffer_grow (filename, len+1);
	      strcpy (filename->ptr, d_name);
	      found |= note_possible_classname (filename->data + entry_length,
						package_length+len+1);
	    }
	  if (dirp)
	    closedir (dirp);
	}
    }

  free (filename->data);

  /* Here we should have a unified way of retrieving an entry, to be
     indexed. */
  if (!found)
    {
      static int first = 1;
      if (first)
	{
	  error ("Can't find default package `%s'. Check the CLASSPATH environment variable and the access to the archives.", package_name);
	  java_error_count++;
	  first = 0;
	}
      else
	parse_error_context (wfl, "Package `%s' not found in import",
			     package_name);
      current_jcf = saved_jcf;
      return;
    }
  current_jcf = saved_jcf;
}

/* Possibly find a type in the import on demands specified
   types. Returns 1 if an error occured, 0 otherwise. Run throught the
   entire list, to detected potential double definitions.  */
		 
static int
find_in_imports_on_demand (class_type)
     tree class_type;
{
  tree node, import, node_to_use = NULL_TREE;
  int seen_once = -1;
  tree cl = NULL_TREE;

  for (import = ctxp->import_demand_list; import; import = TREE_CHAIN (import))
    {
      const char *id_name;
      obstack_grow (&temporary_obstack, 
		    IDENTIFIER_POINTER (EXPR_WFL_NODE (TREE_PURPOSE (import))),
		    IDENTIFIER_LENGTH (EXPR_WFL_NODE (TREE_PURPOSE (import))));
      obstack_1grow (&temporary_obstack, '.');
      obstack_grow0 (&temporary_obstack, 
		     IDENTIFIER_POINTER (TYPE_NAME (class_type)),
		     IDENTIFIER_LENGTH (TYPE_NAME (class_type)));
      id_name = obstack_finish (&temporary_obstack);
	      
      node = maybe_get_identifier (id_name);
      if (node && IS_A_CLASSFILE_NAME (node))
	{
	  if (seen_once < 0)
	    {
	      cl = TREE_PURPOSE (import);
	      seen_once = 1;
	      node_to_use = node;
	    }
	  else
	    {
	      seen_once++;
	      parse_error_context 
		(import, "Type `%s' also potentially defined in package `%s'",
		 IDENTIFIER_POINTER (TYPE_NAME (class_type)),
		 IDENTIFIER_POINTER (EXPR_WFL_NODE (TREE_PURPOSE (import))));
	    }
	}
    }

  if (seen_once == 1)
    {
      /* Setup lineno so that it refers to the line of the import (in
	 case we parse a class file and encounter errors */
      tree decl;
      int saved_lineno = lineno;
      lineno = EXPR_WFL_LINENO (cl);
      TYPE_NAME (class_type) = node_to_use;
      QUALIFIED_P (TYPE_NAME (class_type)) = 1;
      decl = IDENTIFIER_CLASS_VALUE (TYPE_NAME (class_type));
      /* If there is no DECL set for the class or if the class isn't
	 loaded and not seen in source yet, the load */
      if (!decl || (!CLASS_LOADED_P (TREE_TYPE (decl))
		    && !CLASS_FROM_SOURCE_P (TREE_TYPE (decl))))
	load_class (node_to_use, 0);
      lineno = saved_lineno;
      return check_pkg_class_access (TYPE_NAME (class_type), cl);
    }
  else
    return (seen_once < 0 ? 0 : seen_once); /* It's ok not to have found */
}

static tree
resolve_package (pkg, next)
     tree pkg, *next;
{
  tree current, acc;
  tree type_name = NULL_TREE;
  const char *name = IDENTIFIER_POINTER (EXPR_WFL_NODE (pkg));

  /* The trick is to determine when the package name stops and were
     the name of something contained in the package starts. Then we
     return a fully qualified name of what we want to get. */

  /* Do a quick search on well known package names */
  if (!strncmp (name, "java.lang.reflect", 17))
    {
      *next = 
	TREE_CHAIN (TREE_CHAIN (TREE_CHAIN (EXPR_WFL_QUALIFICATION (pkg))));
      type_name = lookup_package_type (name, 17);
    }
  else if (!strncmp (name, "java.lang", 9))
    {
      *next = TREE_CHAIN (TREE_CHAIN (EXPR_WFL_QUALIFICATION (pkg)));
      type_name = lookup_package_type (name, 9);
    }

  /* If we found something here, return */
  if (type_name)
    return type_name; 

  *next = EXPR_WFL_QUALIFICATION (pkg);

  /* Try the current package. */
  if (ctxp->package && !strncmp (name, IDENTIFIER_POINTER (ctxp->package),  
				 IDENTIFIER_LENGTH (ctxp->package)))
    {
      type_name = 
	lookup_package_type_and_set_next (name, 
					  IDENTIFIER_LENGTH (ctxp->package), 
					  next );
      if (type_name)
	return type_name;
    }

  /* Search in imported package */
  for (current = ctxp->import_list; current; current = TREE_CHAIN (current))
    {
      tree current_pkg_name = EXPR_WFL_NODE (TREE_PURPOSE (current));
      int len = IDENTIFIER_LENGTH (current_pkg_name);
      if (!strncmp (name, IDENTIFIER_POINTER (current_pkg_name), len))
	{
	  tree left, dummy;
	  
	  breakdown_qualified (&left, &dummy, current_pkg_name);
	  len = IDENTIFIER_LENGTH (left);
	  type_name = lookup_package_type_and_set_next (name, len, next);
	  if (type_name)
	    break;
	}
    }

  /* Try to progressively construct a type name */
  if (TREE_CODE (pkg) == EXPR_WITH_FILE_LOCATION)
    for (acc = NULL_TREE, current = EXPR_WFL_QUALIFICATION (pkg); 
	 current; current = TREE_CHAIN (current))
      {
	acc = merge_qualified_name (acc, EXPR_WFL_NODE (QUAL_WFL (current)));
	if ((type_name = resolve_no_layout (acc, NULL_TREE)))
	  {
	    type_name = acc;
	    *next = TREE_CHAIN (current);
	    break;
	  }
      }
  return type_name;
}

static tree
lookup_package_type_and_set_next (name, len, next)
     const char *name;
     int len;
     tree *next;
{
  const char *ptr;
  tree type_name = lookup_package_type (name, len);

  if (!type_name)
    return NULL;
  
  ptr = IDENTIFIER_POINTER (type_name);
  while (ptr && (ptr = strchr (ptr, '.'))) 
    {
      *next = TREE_CHAIN (*next);
      ptr++;
    }
  return type_name;
}

static tree
lookup_package_type (name, from)
     const char *name;
     int from;
{
  char subname [128];
  const char *sub = &name[from+1];
  while (*sub != '.' && *sub)
    sub++;
  strncpy (subname, name, sub-name);
  subname [sub-name] = '\0';
  return get_identifier (subname);
}

/* Check that CLASS_NAME refers to a PUBLIC class. Return 0 if no
   access violations were found, 1 otherwise.  */

static int
check_pkg_class_access (class_name, cl)
     tree class_name;
     tree cl;
{
  tree type;

  if (!QUALIFIED_P (class_name) || !IDENTIFIER_CLASS_VALUE (class_name))
    return 0;

  if (!(type = TREE_TYPE (IDENTIFIER_CLASS_VALUE (class_name))))
    return 0;

  if (!CLASS_PUBLIC (TYPE_NAME (type)))
    {
      /* Access to a private class within the same package is
         allowed. */
      tree l, r;
      breakdown_qualified (&l, &r, class_name);
      if (l == ctxp->package)
	return 0;

      parse_error_context 
	(cl, "Can't access %s `%s'. Only public classes and interfaces in other packages can be accessed",
	 (CLASS_INTERFACE (TYPE_NAME (type)) ? "interface" : "class"),
	 IDENTIFIER_POINTER (class_name));
      return 1;
    }
  return 0;
}

/* Local variable declaration. */

static void
declare_local_variables (modifier, type, vlist)
     int modifier;
     tree type;
     tree vlist;
{
  tree decl, current, saved_type;
  tree type_wfl = NULL_TREE;
  int must_chain = 0;
  int final_p = 0;

  /* Push a new block if statements were seen between the last time we
     pushed a block and now. Keep a cound of block to close */
  if (BLOCK_EXPR_BODY (GET_CURRENT_BLOCK (current_function_decl)))
    {
      tree body = GET_CURRENT_BLOCK (current_function_decl);
      tree b = enter_block ();
      BLOCK_EXPR_ORIGIN (b) = body;
    }

  if (modifier)
    {
      int i;
      for (i = 0; i <= 10; i++) if (1 << i & modifier) break;
      if (modifier == ACC_FINAL)
	final_p = 1;
      else 
	{
	  parse_error_context 
	    (ctxp->modifier_ctx [i], 
	     "Only `final' is allowed as a local variables modifier");
	  return;
	}
    }

  /* Obtain an incomplete type if TYPE is not complete. TYPE_WFL will
     hold the TYPE value if a new incomplete has to be created (as
     opposed to being found already existing and reused). */
  SET_TYPE_FOR_RESOLUTION (type, type_wfl, must_chain);

  /* If TYPE is fully resolved and we don't have a reference, make one */
  PROMOTE_RECORD_IF_COMPLETE (type, must_chain);

  /* Go through all the declared variables */
  for (current = vlist, saved_type = type; current;
       current = TREE_CHAIN (current), type = saved_type)
    {
      tree other, real_type;
      tree wfl  = TREE_PURPOSE (current);
      tree name = EXPR_WFL_NODE (wfl);
      tree init = TREE_VALUE (current);

      /* Process NAME, as it may specify extra dimension(s) for it */
      type = build_array_from_name (type, type_wfl, name, &name);

      /* Variable redefinition check */
      if ((other = lookup_name_in_blocks (name)))
	{
	  variable_redefinition_error (wfl, name, TREE_TYPE (other),
				       DECL_SOURCE_LINE (other));
	  continue;
	}

      /* Type adjustment. We may have just readjusted TYPE because
	 the variable specified more dimensions. Make sure we have
	 a reference if we can and don't have one already. */
      PROMOTE_RECORD_IF_COMPLETE (type, must_chain);

      real_type = GET_REAL_TYPE (type);
      /* Never layout this decl. This will be done when its scope
	 will be entered */
      decl = build_decl (VAR_DECL, name, real_type);
      LOCAL_FINAL (decl) = final_p;
      BLOCK_CHAIN_DECL (decl);
      
      /* If doing xreferencing, replace the line number with the WFL
         compound value */
      if (flag_emit_xref)
	DECL_SOURCE_LINE (decl) = EXPR_WFL_LINECOL (wfl);
      
      /* Don't try to use an INIT statement when an error was found */
      if (init && java_error_count)
	init = NULL_TREE;
      
      /* Add the initialization function to the current function's code */
      if (init)
	{
	  /* Name might have been readjusted */
	  EXPR_WFL_NODE (TREE_OPERAND (init, 0)) = name;
	  MODIFY_EXPR_FROM_INITIALIZATION_P (init) = 1;
	  java_method_add_stmt (current_function_decl,
				build_debugable_stmt (EXPR_WFL_LINECOL (init),
						      init));
	}
    
      /* Setup dependency the type of the decl */
      if (must_chain)
	{
	  jdep *dep;
	  register_incomplete_type (JDEP_VARIABLE, type_wfl, decl, type);
	  dep = CLASSD_LAST (ctxp->classd_list);
	  JDEP_GET_PATCH (dep) = &TREE_TYPE (decl);
	}
    }
  SOURCE_FRONTEND_DEBUG (("Defined locals"));
}

/* Called during parsing. Build decls from argument list.  */

static void
source_start_java_method (fndecl)
     tree fndecl;
{
  tree tem;
  tree parm_decl;
  int i;

  if (!fndecl)
    return;

  current_function_decl = fndecl;

  /* New scope for the function */
  enter_block ();
  for (tem = TYPE_ARG_TYPES (TREE_TYPE (fndecl)), i = 0;
       tem != end_params_node; tem = TREE_CHAIN (tem), i++)
    {
      tree type = TREE_VALUE (tem);
      tree name = TREE_PURPOSE (tem);
      
      /* If type is incomplete. Create an incomplete decl and ask for
	 the decl to be patched later */
      if (INCOMPLETE_TYPE_P (type))
	{
	  jdep *jdep;
	  tree real_type = GET_REAL_TYPE (type);
	  parm_decl = build_decl (PARM_DECL, name, real_type);
	  type = obtain_incomplete_type (type);
	  register_incomplete_type (JDEP_PARM, NULL_TREE, NULL_TREE, type);
	  jdep = CLASSD_LAST (ctxp->classd_list);
	  JDEP_MISC (jdep) = name;
	  JDEP_GET_PATCH (jdep) = &TREE_TYPE (parm_decl);
	}
      else
	parm_decl = build_decl (PARM_DECL, name, type);

      /* Remember if a local variable was declared final (via its
         TREE_LIST of type/name.) Set LOCAL_FINAL accordingly. */
      if (ARG_FINAL_P (tem))
	LOCAL_FINAL (parm_decl) = 1;

      BLOCK_CHAIN_DECL (parm_decl);
    }
  tem = BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl));
  BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl)) =
    nreverse (tem);
  DECL_ARG_SLOT_COUNT (current_function_decl) = i;
  DECL_MAX_LOCALS (current_function_decl) = i;
}

/* Called during parsing. Creates an artificial method declaration.  */

static tree
create_artificial_method (class, flags, type, name, args)
     tree class;
     int flags;
     tree type, name, args;
{
  tree mdecl;

  java_parser_context_save_global ();
  lineno = 0;								    
  mdecl = make_node (FUNCTION_TYPE);				    
  TREE_TYPE (mdecl) = type;
  TYPE_ARG_TYPES (mdecl) = args;
  mdecl = add_method (class, flags, name, build_java_signature (mdecl)); 
  java_parser_context_restore_global ();
  DECL_ARTIFICIAL (mdecl) = 1;					    
  return mdecl;
}

/* Starts the body if an artifical method.  */

static void
start_artificial_method_body (mdecl)
     tree mdecl;
{
  DECL_SOURCE_LINE (mdecl) = 1;
  DECL_SOURCE_LINE_MERGE (mdecl, 1);
  source_start_java_method (mdecl);
  enter_block ();
}

static void
end_artificial_method_body (mdecl)
     tree mdecl;
{
  BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (mdecl)) = exit_block ();
  exit_block ();
}

/* Called during expansion. Push decls formerly built from argument
   list so they're usable during expansion. */

static void
expand_start_java_method (fndecl)
     tree fndecl;
{
  tree tem, *ptr;

  current_function_decl = fndecl;

  if (! quiet_flag)
    fprintf (stderr, " [%s.", lang_printable_name (DECL_CONTEXT (fndecl), 0));
  announce_function (fndecl);
  if (! quiet_flag)
    fprintf (stderr, "]");

  pushlevel (1);		/* Prepare for a parameter push */
  ptr = &DECL_ARGUMENTS (fndecl);
  tem  = BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (current_function_decl));
  while (tem)
    {
      tree next = TREE_CHAIN (tem);
      tree type = TREE_TYPE (tem);
      if (PROMOTE_PROTOTYPES
	  && TYPE_PRECISION (type) < TYPE_PRECISION (integer_type_node)
	  && INTEGRAL_TYPE_P (type))
	type = integer_type_node;
      DECL_ARG_TYPE (tem) = type;
      layout_decl (tem, 0);
      pushdecl (tem);
      *ptr = tem;
      ptr = &TREE_CHAIN (tem);
      tem = next;
    }
  *ptr = NULL_TREE;
  pushdecl_force_head (DECL_ARGUMENTS (fndecl));
  lineno = DECL_SOURCE_LINE_FIRST (fndecl);
}

/* Terminate a function and expand its body.  */

static void
source_end_java_method ()
{
  tree fndecl = current_function_decl;
  int flag_asynchronous_exceptions = asynchronous_exceptions;

  if (!fndecl)
    return;

  java_parser_context_save_global ();
  lineno = ctxp->last_ccb_indent1;

  /* Set EH language codes */
  java_set_exception_lang_code ();

  /* Turn function bodies with only a NOP expr null, so they don't get
     generated at all and we won't get warnings when using the -W
     -Wall flags. */
  if (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl)) == empty_stmt_node)
    BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl)) = NULL_TREE;

  /* Generate function's code */
  if (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl))
      && ! flag_emit_class_files
      && ! flag_emit_xref)
    expand_expr_stmt (BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (fndecl)));

  /* pop out of its parameters */
  pushdecl_force_head (DECL_ARGUMENTS (fndecl));
  poplevel (1, 0, 1);
  BLOCK_SUPERCONTEXT (DECL_INITIAL (fndecl)) = fndecl;

  /* Generate rtl for function exit.  */
  if (! flag_emit_class_files && ! flag_emit_xref)
    {
      lineno = DECL_SOURCE_LINE_LAST (fndecl);
      /* Emit catch-finally clauses */
      emit_handlers ();
      expand_function_end (input_filename, lineno, 0);

      /* FIXME: If the current method contains any exception handlers,
	 force asynchronous_exceptions: this is necessary because signal
	 handlers in libjava may throw exceptions.  This is far from being
	 a perfect solution, but it's better than doing nothing at all.*/
      if (catch_clauses)
	asynchronous_exceptions = 1;

      /* Run the optimizers and output assembler code for this function. */
      rest_of_compilation (fndecl);
    }

  current_function_decl = NULL_TREE;
  permanent_allocation (1);
  java_parser_context_restore_global ();
  asynchronous_exceptions = flag_asynchronous_exceptions;
}

/* Record EXPR in the current function block. Complements compound
   expression second operand if necessary.  */

tree
java_method_add_stmt (fndecl, expr)
     tree fndecl, expr;
{
  if (!GET_CURRENT_BLOCK (fndecl))
    return NULL_TREE;
  return add_stmt_to_block (GET_CURRENT_BLOCK (fndecl), NULL_TREE, expr);
}

static tree
add_stmt_to_block (b, type, stmt)
     tree b, type, stmt;
{
  tree body = BLOCK_EXPR_BODY (b), c;
  
  if (java_error_count)
    return body;
    
  if ((c = add_stmt_to_compound (body, type, stmt)) == body)
    return body;

  BLOCK_EXPR_BODY (b) = c;
  TREE_SIDE_EFFECTS (c) = 1;
  return c;
}

/* Add STMT to EXISTING if possible, otherwise create a new
   COMPOUND_EXPR and add STMT to it. */

static tree
add_stmt_to_compound (existing, type, stmt)
     tree existing, type, stmt;
{
  if (existing)
    return build (COMPOUND_EXPR, type, existing, stmt);
  else
    return stmt;
}

/* Hold THIS for the scope of the current public method decl.  */
static tree current_this;

void java_layout_seen_class_methods ()
{
  tree previous_list = all_class_list;
  tree end = NULL_TREE;
  tree current;

  while (1)
    {
      for (current = previous_list; 
	   current != end; current = TREE_CHAIN (current))
	layout_class_methods (TREE_TYPE (TREE_VALUE (current)));
      
      if (previous_list != all_class_list)
	{
	  end = previous_list;
	  previous_list = all_class_list;
	}
      else
	break;
    }
}

void
java_reorder_fields ()
{
  static tree stop_reordering = NULL_TREE;

  tree current;
  for (current = ctxp->gclass_list; current; current = TREE_CHAIN (current))
    {
      current_class = TREE_TYPE (TREE_VALUE (current));

      if (current_class == stop_reordering)
	break;

      /* Reverse the fields, but leave the dummy field in front.
	 Fields are already ordered for Object and Class */
      if (TYPE_FIELDS (current_class) && current_class != object_type_node
	  && current_class != class_type_node)
      {
	/* If the dummy field is there, reverse the right fields and
	   just layout the type for proper fields offset */
	if (!DECL_NAME (TYPE_FIELDS (current_class)))
	  {
	    tree fields = TYPE_FIELDS (current_class);
	    TREE_CHAIN (fields) = nreverse (TREE_CHAIN (fields));
	    TYPE_SIZE (current_class) = NULL_TREE;
	  }
	/* We don't have a dummy field, we need to layout the class,
           after having reversed the fields */
	else
	  {
	    TYPE_FIELDS (current_class) = 
	      nreverse (TYPE_FIELDS (current_class));
	    TYPE_SIZE (current_class) = NULL_TREE;
	  }
      }
    }
  stop_reordering = TREE_TYPE (TREE_VALUE (ctxp->gclass_list));
}

/* Layout the methods of all classes loaded in one way on an
   other. Check methods of source parsed classes. Then reorder the
   fields and layout the classes or the type of all source parsed
   classes */

void
java_layout_classes ()
{
  tree current;
  int save_error_count = java_error_count;

  /* Layout the methods of all classes seen so far */
  java_layout_seen_class_methods ();
  java_parse_abort_on_error ();
  all_class_list = NULL_TREE;

  /* Then check the methods of all parsed classes */
  for (current = ctxp->gclass_list; current; current = TREE_CHAIN (current))
    if (CLASS_FROM_SOURCE_P (TREE_TYPE (TREE_VALUE (current))))
      CHECK_METHODS (TREE_VALUE (current));
  java_parse_abort_on_error ();

  for (current = ctxp->gclass_list; current; current = TREE_CHAIN (current))
    {
      current_class = TREE_TYPE (TREE_VALUE (current));
      layout_class (current_class);

      /* From now on, the class is considered completely loaded */
      CLASS_LOADED_P (current_class) = 1;

      /* Error reported by the caller */
      if (java_error_count)
	return;
    }

  /* We might have reloaded classes durign the process of laying out
     classes for code generation. We must layout the methods of those
     late additions, as constructor checks might use them */
  java_layout_seen_class_methods ();
  java_parse_abort_on_error ();
}

/* Expand methods in the current set of classes rememebered for
   generation.  */

static void
java_complete_expand_classes ()
{
  tree current;

  do_not_fold = flag_emit_xref;

  for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
    if (!INNER_CLASS_DECL_P (current))
      java_complete_expand_class (current);
}

/* Expand the methods found in OUTER, starting first by OUTER's inner
   classes, if any.  */

static void
java_complete_expand_class (outer)
     tree outer;
{
  tree inner_list;

  set_nested_class_simple_name_value (outer, 1); /* Set */

  /* We need to go after all inner classes and start expanding them,
     starting with most nested ones. We have to do that because nested
     classes might add functions to outer classes */

  for (inner_list = DECL_INNER_CLASS_LIST (outer);
       inner_list; inner_list = TREE_CHAIN (inner_list))
    java_complete_expand_class (TREE_PURPOSE (inner_list));

  java_complete_expand_methods (outer);
  set_nested_class_simple_name_value (outer, 0); /* Reset */
}

/* Expand methods registered in CLASS_DECL. The general idea is that
   we expand regular methods first. This allows us get an estimate on
   how outer context local alias fields are really used so we can add
   to the constructor just enough code to initialize them properly (it
   also lets us generate $finit$ correctly.) Then we expand the
   constructors and then <clinit>.  */

static void
java_complete_expand_methods (class_decl)
     tree class_decl;
{
  tree clinit, finit, decl, first_decl;

  current_class = TREE_TYPE (class_decl);

  /* Initialize a new constant pool */
  init_outgoing_cpool ();

  /* Pre-expand <clinit> to figure whether we really need it or
     not. If we do need it, we pre-expand the static fields so they're
     ready to be used somewhere else. <clinit> will be fully expanded
     after we processed the constructors. */
  first_decl = TYPE_METHODS (current_class);
  clinit = maybe_generate_pre_expand_clinit (current_class);

  /* Then generate $finit$ (if we need to) because constructor will
   try to use it.*/
  if (TYPE_FINIT_STMT_LIST (current_class))
    {
      finit = generate_finit (current_class);
      java_complete_expand_method (finit);
    }

  /* Now do the constructors */
  for (decl = first_decl ; !java_error_count && decl; decl = TREE_CHAIN (decl))
    {
      int no_body;

      if (!DECL_CONSTRUCTOR_P (decl))
	continue;
      
      no_body = !DECL_FUNCTION_BODY (decl);
      /* Don't generate debug info on line zero when expanding a
	 generated constructor. */
      if (no_body)
	restore_line_number_status (1);

      java_complete_expand_method (decl);
      
      if (no_body)
	restore_line_number_status (0);
    }

  /* First, do the ordinary methods. */
  for (decl = first_decl; decl; decl = TREE_CHAIN (decl))
    {
      /* Skip abstract or native methods -- but do handle native
 	 methods when generating JNI stubs.  */
      if (METHOD_ABSTRACT (decl)
 	  || (! flag_jni && METHOD_NATIVE (decl))
	  || DECL_CONSTRUCTOR_P (decl) || DECL_CLINIT_P (decl))
	continue;

      if (METHOD_NATIVE (decl))
 	{
 	  tree body = build_jni_stub (decl);
 	  BLOCK_EXPR_BODY (DECL_FUNCTION_BODY (decl)) = body;
 	}

      java_complete_expand_method (decl);
    }

  /* If there is indeed a <clinit>, fully expand it now */
  if (clinit)
    {
      /* Prevent the use of `this' inside <clinit> */
      ctxp->explicit_constructor_p = 1;
      java_complete_expand_method (clinit);
      ctxp->explicit_constructor_p = 0;
    }
  
  /* We might have generated a class$ that we now want to expand */
  if (TYPE_DOT_CLASS (current_class))
    java_complete_expand_method (TYPE_DOT_CLASS (current_class));

  /* Now verify constructor circularity (stop after the first one we
     prove wrong.) */
  if (!CLASS_INTERFACE (class_decl))
    for (decl = TYPE_METHODS (current_class); decl; decl = TREE_CHAIN (decl))
      if (DECL_CONSTRUCTOR_P (decl) 
	  && verify_constructor_circularity (decl, decl))
	break;

  /* Save the constant pool. We'll need to restore it later. */
  TYPE_CPOOL (current_class) = outgoing_cpool;
}

/* Hold a list of catch clauses list. The first element of this list is
   the list of the catch clauses of the currently analysed try block. */
static tree currently_caught_type_list;

/* Attempt to create <clinit>. Pre-expand static fields so they can be
   safely used in some other methods/constructors.  */

static tree
maybe_generate_pre_expand_clinit (class_type)
     tree class_type;
{
  tree current, mdecl;

  if (!TYPE_CLINIT_STMT_LIST (class_type))
    return NULL_TREE;

  /* Go through all static fields and pre expand them */
  for (current = TYPE_FIELDS (class_type); current; 
       current = TREE_CHAIN (current))
    if (FIELD_STATIC (current))
      build_field_ref (NULL_TREE, class_type, DECL_NAME (current));

  /* Then build the <clinit> method */
  mdecl = create_artificial_method (class_type, ACC_STATIC, void_type_node,
				    clinit_identifier_node, end_params_node);
  layout_class_method (class_type, CLASSTYPE_SUPER (class_type),
		       mdecl, NULL_TREE);
  start_artificial_method_body (mdecl);

  /* We process the list of assignment we produced as the result of
     the declaration of initialized static field and add them as
     statement to the <clinit> method. */
  for (current = TYPE_CLINIT_STMT_LIST (class_type); current;
       current = TREE_CHAIN (current))
    {
      /* We build the assignment expression that will initialize the
	 field to its value. There are strict rules on static
	 initializers (8.5). FIXME */
      tree stmt = build_debugable_stmt (EXPR_WFL_LINECOL (current), current);
      java_method_add_stmt (mdecl, stmt);
    }

  end_artificial_method_body (mdecl);

  /* Now we want to place <clinit> as the last method for interface so
     that it doesn't interfere with the dispatch table based
     lookup. */
  if (CLASS_INTERFACE (TYPE_NAME (class_type))
      && TREE_CHAIN (TYPE_METHODS (class_type)))
    {
      tree current = 
	TYPE_METHODS (class_type) = TREE_CHAIN (TYPE_METHODS (class_type));

      while (TREE_CHAIN (current))
	current = TREE_CHAIN (current);
      TREE_CHAIN (current) = mdecl;
      TREE_CHAIN (mdecl) = NULL_TREE;
    }

  return mdecl;
}

/* Complete and expand a method.  */

static void
java_complete_expand_method (mdecl)
     tree mdecl;
{
  current_function_decl = mdecl;
  /* Fix constructors before expanding them */
  if (DECL_CONSTRUCTOR_P (mdecl))
    fix_constructors (mdecl);
  
  /* Expand functions that have a body */
  if (DECL_FUNCTION_BODY (mdecl))
    {
      tree fbody = DECL_FUNCTION_BODY (mdecl);
      tree block_body = BLOCK_EXPR_BODY (fbody);
      tree exception_copy = NULL_TREE;
      expand_start_java_method (mdecl);
      build_result_decl (mdecl);

      current_this 
	= (!METHOD_STATIC (mdecl) ? 
	   BLOCK_EXPR_DECLS (DECL_FUNCTION_BODY (mdecl)) : NULL_TREE);

      /* Purge the `throws' list of unchecked exceptions. If we're
	 doing xref, save a copy of the list and re-install it
	 later. */
      if (flag_emit_xref)
	exception_copy = copy_list (DECL_FUNCTION_THROWS (mdecl));

      purge_unchecked_exceptions (mdecl);

      /* Install exceptions thrown with `throws' */
      PUSH_EXCEPTIONS (DECL_FUNCTION_THROWS (mdecl));

      if (block_body != NULL_TREE)
	{
	  block_body = java_complete_tree (block_body);

	  if (! flag_emit_xref && ! METHOD_NATIVE (mdecl))
	    check_for_initialization (block_body);
	  ctxp->explicit_constructor_p = 0;
	}

      BLOCK_EXPR_BODY (fbody) = block_body;

      /* If we saw a return but couldn't evaluate it properly, we'll
	 have an error_mark_node here. */
      if (block_body != error_mark_node
	  && (block_body == NULL_TREE || CAN_COMPLETE_NORMALLY (block_body))
	  && TREE_CODE (TREE_TYPE (TREE_TYPE (mdecl))) != VOID_TYPE
	  && !flag_emit_xref)
	missing_return_error (current_function_decl);

      complete_start_java_method (mdecl); 

      /* Don't go any further if we've found error(s) during the
         expansion */
      if (!java_error_count)
	source_end_java_method ();
      else
	{
	  pushdecl_force_head (DECL_ARGUMENTS (mdecl));
	  poplevel (1, 0, 1);
	}

      /* Pop the exceptions and sanity check */
      POP_EXCEPTIONS();
      if (currently_caught_type_list)
	fatal ("Exception list non empty - java_complete_expand_method");

      if (flag_emit_xref)
	DECL_FUNCTION_THROWS (mdecl) = exception_copy;
    }
}



/* This section of the code deals with accessing enclosing context
   fields either directly by using the relevant access to this$<n> or
   by invoking an access method crafted for that purpose.  */

/* Build the necessary access from an inner class to an outer
   class. This routine could be optimized to cache previous result
   (decl, current_class and returned access).  When an access method
   needs to be generated, it always takes the form of a read. It might
   be later turned into a write by calling outer_field_access_fix.  */

static tree
build_outer_field_access (id, decl)
     tree id, decl;
{
  tree access = NULL_TREE;
  tree ctx = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (current_class)));

  /* If decl's class is the direct outer class of the current_class,
     build the access as `this$<n>.<field>'. Not that we will break
     the `private' barrier if we're not emitting bytecodes. */
  if (ctx == DECL_CONTEXT (decl) 
      && (!FIELD_PRIVATE (decl) || !flag_emit_class_files ))
    {
      tree thisn = build_current_thisn (current_class);
      access = make_qualified_primary (build_wfl_node (thisn), 
				       id, EXPR_WFL_LINECOL (id));
    }
  /* Otherwise, generate access methods to outer this and access the
     field (either using an access method or by direct access.) */
  else
    {
      int lc = EXPR_WFL_LINECOL (id);

      /* Now we chain the required number of calls to the access$0 to
	 get a hold to the enclosing instance we need, and the we
	 build the field access. */
      access = build_access_to_thisn (ctx, DECL_CONTEXT (decl), lc);

      /* If the field is private and we're generating bytecode, then
         we generate an access method */
      if (FIELD_PRIVATE (decl) && flag_emit_class_files )
	{
	  tree name = build_outer_field_access_methods (decl);
	  access = build_outer_field_access_expr (lc, DECL_CONTEXT (decl),
						  name, access, NULL_TREE);
	}
      /* Otherwise we use `access$(this$<j>). ... access$(this$<i>).<field>'.
	 Once again we break the `private' access rule from a foreign
	 class. */
      else
	access = make_qualified_primary (access, id, lc);
    }
  return resolve_expression_name (access, NULL);
}

/* Return a non zero value if NODE describes an outer field inner
   access.  */

static int
outer_field_access_p (type, decl)
    tree type, decl;
{
  if (!INNER_CLASS_TYPE_P (type) 
      || TREE_CODE (decl) != FIELD_DECL
      || DECL_CONTEXT (decl) == type)
    return 0;

  for (type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))); ;
       type = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))))
    {
      if (type == DECL_CONTEXT (decl))
	return 1;
      if (!DECL_CONTEXT (TYPE_NAME (type)))
	break;
    }

  return 0;
}

/* Return a non zero value if NODE represents an outer field inner
   access that was been already expanded. As a side effect, it returns
   the name of the field being accessed and the argument passed to the
   access function, suitable for a regeneration of the access method
   call if necessary. */

static int
outer_field_expanded_access_p (node, name, arg_type, arg)
    tree node, *name, *arg_type, *arg;
{
  int identified = 0;

  if (TREE_CODE (node) != CALL_EXPR)
    return 0;

  /* Well, gcj generates slightly different tree nodes when compiling
     to native or bytecodes. It's the case for function calls. */

  if (flag_emit_class_files 
      && TREE_CODE (node) == CALL_EXPR
      && OUTER_FIELD_ACCESS_IDENTIFIER_P (DECL_NAME (TREE_OPERAND (node, 0))))
    identified = 1;
  else if (!flag_emit_class_files)
    {
      node = TREE_OPERAND (node, 0);
      
      if (node && TREE_OPERAND (node, 0)
	  && TREE_CODE (TREE_OPERAND (node, 0)) == ADDR_EXPR)
	{
	  node = TREE_OPERAND (node, 0);
	  if (TREE_OPERAND (node, 0)
	      && TREE_CODE (TREE_OPERAND (node, 0)) == FUNCTION_DECL
	      && (OUTER_FIELD_ACCESS_IDENTIFIER_P 
		  (DECL_NAME (TREE_OPERAND (node, 0)))))
	    identified = 1;
	}
    }

  if (identified && name && arg_type && arg)
    {
      tree argument = TREE_OPERAND (node, 1);
      *name = DECL_NAME (TREE_OPERAND (node, 0));
      *arg_type = TREE_TYPE (TREE_TYPE (TREE_VALUE (argument)));
      *arg = TREE_VALUE (argument);
    }
  return identified;
}

/* Detect in NODE an outer field read access from an inner class and
   transform it into a write with RHS as an argument. This function is
   called from the java_complete_lhs when an assignment to a LHS can
   be identified. */

static tree
outer_field_access_fix (wfl, node, rhs)
    tree wfl, node, rhs;
{
  tree name, arg_type, arg;
  
  if (outer_field_expanded_access_p (node, &name, &arg_type, &arg))
    {
      /* At any rate, check whether we're trying to assign a value to
	 a final. */
      tree accessed = (JDECL_P (node) ? node : 
		       (TREE_CODE (node) == COMPONENT_REF ? 
			TREE_OPERAND (node, 1) : node));
      if (check_final_assignment (accessed, wfl))
	return error_mark_node;
  
      node = build_outer_field_access_expr (EXPR_WFL_LINECOL (wfl), 
					    arg_type, name, arg, rhs);
      return java_complete_tree (node);
    }
  return NULL_TREE;
}

/* Construct the expression that calls an access method:
     <type>.access$<n>(<arg1> [, <arg2>]); 

   ARG2 can be NULL and will be omitted in that case. It will denote a
   read access.  */

static tree
build_outer_field_access_expr (lc, type, access_method_name, arg1, arg2)
    int lc;
    tree type, access_method_name, arg1, arg2;
{
  tree args, cn, access;

  args = arg1 ? arg1 : 
    build_wfl_node (build_current_thisn (current_class));
  args = build_tree_list (NULL_TREE, args);

  if (arg2)
    args = tree_cons (NULL_TREE, arg2, args);

  access = build_method_invocation (build_wfl_node (access_method_name), args);
  cn = build_wfl_node (DECL_NAME (TYPE_NAME (type)));
  return make_qualified_primary (cn, access, lc);
}

static tree
build_new_access_id ()
{
  static int access_n_counter = 1;
  char buffer [128];

  sprintf (buffer, "access$%d", access_n_counter++);
  return get_identifier (buffer);
}

/* Create the static access functions for the outer field DECL. We define a
   read:
     TREE_TYPE (<field>) access$<n> (DECL_CONTEXT (<field>) inst$) {
       return inst$.field;
     }
   and a write access:
     TREE_TYPE (<field>) access$<n> (DECL_CONTEXT (<field>) inst$,
                                     TREE_TYPE (<field>) value$) {
       return inst$.field = value$;
     }
   We should have a usage flags on the DECL so we can lazily turn the ones
   we're using for code generation. FIXME.
*/

static tree
build_outer_field_access_methods (decl)
    tree decl;
{
  tree id, args, stmt, mdecl;
  
  /* Check point, to be removed. FIXME */
  if (FIELD_INNER_ACCESS (decl) 
      && TREE_CODE (FIELD_INNER_ACCESS (decl)) != IDENTIFIER_NODE)
    abort ();

  if (FIELD_INNER_ACCESS (decl))
    return FIELD_INNER_ACCESS (decl);

  push_obstacks (&permanent_obstack, &permanent_obstack);

  /* Create the identifier and a function named after it. */
  id = build_new_access_id ();

  /* The identifier is marked as bearing the name of a generated write
     access function for outer field accessed from inner classes. */
  OUTER_FIELD_ACCESS_IDENTIFIER_P (id) = 1;

  /* Create the read access */
  args = build_tree_list (inst_id, build_pointer_type (DECL_CONTEXT (decl)));
  TREE_CHAIN (args) = end_params_node;
  stmt = make_qualified_primary (build_wfl_node (inst_id),
				 build_wfl_node (DECL_NAME (decl)), 0);
  stmt = build_return (0, stmt);
  mdecl = build_outer_field_access_method (DECL_CONTEXT (decl), 
					   TREE_TYPE (decl), id, args, stmt);
  DECL_FUNCTION_ACCESS_DECL (mdecl) = decl;

  /* Create the write access method */
  args = build_tree_list (inst_id, build_pointer_type (DECL_CONTEXT (decl)));
  TREE_CHAIN (args) = build_tree_list (wpv_id, TREE_TYPE (decl));
  TREE_CHAIN (TREE_CHAIN (args)) = end_params_node;
  stmt = make_qualified_primary (build_wfl_node (inst_id),
				 build_wfl_node (DECL_NAME (decl)), 0);
  stmt = build_return (0, build_assignment (ASSIGN_TK, 0, stmt,
					    build_wfl_node (wpv_id)));

  mdecl = build_outer_field_access_method (DECL_CONTEXT (decl), 
					   TREE_TYPE (decl), id, args, stmt);
  DECL_FUNCTION_ACCESS_DECL (mdecl) = decl;
  pop_obstacks ();

  /* Return the access name */
  return FIELD_INNER_ACCESS (decl) = id;
}

/* Build an field access method NAME.  */

static tree 
build_outer_field_access_method (class, type, name, args, body)
    tree class, type, name, args, body;
{
  tree saved_current_function_decl, mdecl;

  /* Create the method */
  mdecl = create_artificial_method (class, ACC_STATIC, type, name, args);
  fix_method_argument_names (args, mdecl);
  layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);

  /* Attach the method body. */
  saved_current_function_decl = current_function_decl;
  start_artificial_method_body (mdecl);
  java_method_add_stmt (mdecl, body);
  end_artificial_method_body (mdecl);
  current_function_decl = saved_current_function_decl;

  return mdecl;
}


/* This section deals with building access function necessary for
   certain kinds of method invocation from inner classes.  */

static tree
build_outer_method_access_method (decl)
    tree decl;
{
  tree saved_current_function_decl, mdecl;
  tree args = NULL_TREE, call_args = NULL_TREE;
  tree carg, id, body, class;
  char buffer [80];
  int parm_id_count = 0;

  /* Test this abort with an access to a private field */
  if (!strcmp (IDENTIFIER_POINTER (DECL_NAME (decl)), "access$"))
    abort ();

  /* Check the cache first */
  if (DECL_FUNCTION_INNER_ACCESS (decl))
    return DECL_FUNCTION_INNER_ACCESS (decl);

  class = DECL_CONTEXT (decl);

  /* Obtain an access identifier and mark it */
  id = build_new_access_id ();
  OUTER_FIELD_ACCESS_IDENTIFIER_P (id) = 1;

  push_obstacks (&permanent_obstack, &permanent_obstack);

  carg = TYPE_ARG_TYPES (TREE_TYPE (decl));
  /* Create the arguments, as much as the original */
  for (; carg && carg != end_params_node; 
       carg = TREE_CHAIN (carg))
    {
      sprintf (buffer, "write_parm_value$%d", parm_id_count++);
      args = chainon (args, build_tree_list (get_identifier (buffer), 
					     TREE_VALUE (carg)));
    }
  args = chainon (args, end_params_node);

  /* Create the method */
  mdecl = create_artificial_method (class, ACC_STATIC, 
				    TREE_TYPE (TREE_TYPE (decl)), id, args);
  layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);
  /* There is a potential bug here. We should be able to use
     fix_method_argument_names, but then arg names get mixed up and
     eventually a constructor will have its this$0 altered and the
     outer context won't be assignment properly. The test case is
     stub.java FIXME */
  TYPE_ARG_TYPES (TREE_TYPE (mdecl)) = args;

  /* Attach the method body. */
  saved_current_function_decl = current_function_decl;
  start_artificial_method_body (mdecl);

  /* The actual method invocation uses the same args. When invoking a
     static methods that way, we don't want to skip the first
     argument. */
  carg = args;
  if (!METHOD_STATIC (decl))
    carg = TREE_CHAIN (carg);
  for (; carg && carg != end_params_node; carg = TREE_CHAIN (carg))
    call_args = tree_cons (NULL_TREE, build_wfl_node (TREE_PURPOSE (carg)),
			   call_args);

  body = build_method_invocation (build_wfl_node (DECL_NAME (decl)), 
				  call_args);
  if (!METHOD_STATIC (decl))
    body = make_qualified_primary (build_wfl_node (TREE_PURPOSE (args)), 
				   body, 0);
  if (TREE_TYPE (TREE_TYPE (decl)) != void_type_node)
    body = build_return (0, body);
  java_method_add_stmt (mdecl,body);
  end_artificial_method_body (mdecl);
  current_function_decl = saved_current_function_decl;
  pop_obstacks ();

  /* Back tag the access function so it know what it accesses */
  DECL_FUNCTION_ACCESS_DECL (decl) = mdecl;

  /* Tag the current method so it knows it has an access generated */
  return DECL_FUNCTION_INNER_ACCESS (decl) = mdecl;
}


/* This section of the code deals with building expressions to access
   the enclosing instance of an inner class. The enclosing instance is
   kept in a generated field called this$<n>, with <n> being the
   inner class nesting level (starting from 0.)  */
    
/* Build an access to a given this$<n>, possibly by chaining access
   call to others. Access methods to this$<n> are build on the fly if
   necessary */

static tree
build_access_to_thisn (from, to, lc)
     tree from, to;
     int lc;
{
  tree access = NULL_TREE;

  while (from != to)
    {
      tree access0_wfl, cn;

      maybe_build_thisn_access_method (from);
      access0_wfl = build_wfl_node (access0_identifier_node);
      cn = build_wfl_node (DECL_NAME (TYPE_NAME (from)));
      EXPR_WFL_LINECOL (access0_wfl) = lc;
      
      if (!access)
	{
	  access = build_current_thisn (current_class);
	  access = build_wfl_node (access);
	}
      access = build_tree_list (NULL_TREE, access);
      access = build_method_invocation (access0_wfl, access);
      access = make_qualified_primary (cn, access, lc);
      
      from = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (from)));
    }
  return access;
}

/* Build an access function to the this$<n> local to TYPE. NULL_TREE
   is returned if nothing needs to be generated. Otherwise, the method
   generated, fully walked and a method decl is returned.  

   NOTE: These generated methods should be declared in a class file
   attribute so that they can't be referred to directly.  */

static tree
maybe_build_thisn_access_method (type)
    tree type;
{
  tree mdecl, args, stmt, rtype;
  tree saved_current_function_decl;

  /* If TYPE is a top-level class, no access method is required.
     If there already is such an access method, bail out. */
  if (CLASS_ACCESS0_GENERATED_P (type) || !INNER_CLASS_TYPE_P (type))
    return NULL_TREE;

  /* We generate the method. The method looks like:
     static <outer_of_type> access$0 (<type> inst$) { return inst$.this$<n>; }
  */
  push_obstacks (&permanent_obstack, &permanent_obstack);
  args = build_tree_list (inst_id, build_pointer_type (type));
  TREE_CHAIN (args) = end_params_node;
  rtype = build_pointer_type (TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))));
  mdecl = create_artificial_method (type, ACC_STATIC, rtype,
				    access0_identifier_node, args);
  fix_method_argument_names (args, mdecl);
  layout_class_method (type, NULL_TREE, mdecl, NULL_TREE);
  stmt = build_current_thisn (type);
  stmt = make_qualified_primary (build_wfl_node (inst_id), 
				 build_wfl_node (stmt), 0);
  stmt = build_return (0, stmt);

  saved_current_function_decl = current_function_decl;
  start_artificial_method_body (mdecl);
  java_method_add_stmt (mdecl, stmt);
  end_artificial_method_body (mdecl);
  current_function_decl = saved_current_function_decl;
  pop_obstacks ();

  CLASS_ACCESS0_GENERATED_P (type) = 1;

  return mdecl;
}

/* Craft an correctly numbered `this$<n>'string. this$0 is used for
   the first level of innerclassing. this$1 for the next one, etc...
   This function can be invoked with TYPE to NULL, available and then
   has to count the parser context.  */

static tree
build_current_thisn (type)
    tree type;
{
  static int saved_i = -1;
  static tree saved_thisn = NULL_TREE;

  tree decl;
  char buffer [80];
  int i = 0;

  if (type)
    {
      static tree saved_type = NULL_TREE;
      static int saved_type_i = 0;

      if (type == saved_type)
	i = saved_type_i;
      else
	{
	  for (i = -1, decl = DECL_CONTEXT (TYPE_NAME (type)); 
	       decl; decl = DECL_CONTEXT (decl), i++)
	    ;
      
	  saved_type = type;
	  saved_type_i = i;
	}
    }
  else
    i = list_length (GET_CPC_LIST ())-2;

  if (i == saved_i)
    return saved_thisn;
    
  sprintf (buffer, "this$%d", i);
  saved_i = i;
  saved_thisn = get_identifier (buffer);
  return saved_thisn;
}

/* Return the assignement to the hidden enclosing context `this$<n>'
   by the second incoming parameter to the innerclass constructor. The
   form used is `this.this$<n> = this$<n>;'.  */

static tree
build_thisn_assign ()
{
  if (current_class && PURE_INNER_CLASS_TYPE_P (current_class))
    {
      tree thisn = build_current_thisn (current_class);
      tree lhs = make_qualified_primary (build_wfl_node (this_identifier_node),
					 build_wfl_node (thisn), 0);
      tree rhs = build_wfl_node (thisn);
      EXPR_WFL_SET_LINECOL (lhs, lineno, 0);
      return build_assignment (ASSIGN_TK, EXPR_WFL_LINECOL (lhs), lhs, rhs);
    }
  return NULL_TREE;
}


/* Building the synthetic `class$' used to implement the `.class' 1.1
   extension for non primitive types. This method looks like:

    static Class class$(String type) throws NoClassDefFoundError
    {
      try {return (java.lang.Class.forName (String));}
      catch (ClassNotFoundException e) {
        throw new NoClassDefFoundError(e.getMessage());}
    } */

static tree
build_dot_class_method (class)
     tree class;
{
#define BWF(S) build_wfl_node (get_identifier ((S)))
#define MQN(X,Y) make_qualified_name ((X), (Y), 0)
  tree args, tmp, saved_current_function_decl, mdecl;
  tree stmt, throw_stmt, catch, catch_block, try_block;
  tree catch_clause_param;
  tree class_not_found_exception, no_class_def_found_error;

  static tree get_message_wfl, type_parm_wfl;

  if (!get_message_wfl)
    {
      get_message_wfl = build_wfl_node (get_identifier ("getMessage"));
      type_parm_wfl = build_wfl_node (get_identifier ("type$"));
    }

  /* Build the arguments */
  args = build_tree_list (get_identifier ("type$"),
			  build_pointer_type (string_type_node));
  TREE_CHAIN (args) = end_params_node;

  /* Build the qualified name java.lang.Class.forName */
  tmp = MQN (MQN (MQN (BWF ("java"), 
		       BWF ("lang")), BWF ("Class")), BWF ("forName"));

  /* For things we have to catch and throw */
  class_not_found_exception = 
    lookup_class (get_identifier ("java.lang.ClassNotFoundException"));
  no_class_def_found_error = 
    lookup_class (get_identifier ("java.lang.NoClassDefFoundError"));
  load_class (class_not_found_exception, 1);
  load_class (no_class_def_found_error, 1);

  /* Create the "class$" function */
  mdecl = create_artificial_method (class, ACC_STATIC, 
				    build_pointer_type (class_type_node),
				    get_identifier ("class$"), args);
  DECL_FUNCTION_THROWS (mdecl) = build_tree_list (NULL_TREE,
						  no_class_def_found_error);
  
  /* We start by building the try block. We need to build:
       return (java.lang.Class.forName (type)); */
  stmt = build_method_invocation (tmp, 
				  build_tree_list (NULL_TREE, type_parm_wfl));
  stmt = build_return (0, stmt);
  /* Put it in a block. That's the try block */
  try_block = build_expr_block (stmt, NULL_TREE);

  /* Now onto the catch block. We start by building the expression
     throwing a new exception: 
       throw new NoClassDefFoundError (_.getMessage); */
  throw_stmt = make_qualified_name (build_wfl_node (wpv_id), 
				    get_message_wfl, 0);
  throw_stmt = build_method_invocation (throw_stmt, NULL_TREE);
  
  /* Build new NoClassDefFoundError (_.getMessage) */
  throw_stmt = build_new_invocation 
    (build_wfl_node (get_identifier ("NoClassDefFoundError")),
     build_tree_list (build_pointer_type (string_type_node), throw_stmt));

  /* Build the throw, (it's too early to use BUILD_THROW) */
  throw_stmt = build1 (THROW_EXPR, NULL_TREE, throw_stmt);

  /* Build the catch block to encapsulate all this. We begin by
     building an decl for the catch clause parameter and link it to
     newly created block, the catch block. */
  catch_clause_param = 
    build_decl (VAR_DECL, wpv_id, 
		build_pointer_type (class_not_found_exception));
  catch_block = build_expr_block (NULL_TREE, catch_clause_param);
  
  /* We initialize the variable with the exception handler. */
  catch = build (MODIFY_EXPR, NULL_TREE, catch_clause_param,
		 soft_exceptioninfo_call_node);
  add_stmt_to_block (catch_block, NULL_TREE, catch);

  /* We add the statement throwing the new exception */
  add_stmt_to_block (catch_block, NULL_TREE, throw_stmt);

  /* Build a catch expression for all this */
  catch_block = build1 (CATCH_EXPR, NULL_TREE, catch_block);

  /* Build the try/catch sequence */
  stmt = build_try_statement (0, try_block, catch_block);

  fix_method_argument_names (args, mdecl);
  layout_class_method (class, NULL_TREE, mdecl, NULL_TREE);
  saved_current_function_decl = current_function_decl;
  start_artificial_method_body (mdecl);
  java_method_add_stmt (mdecl, stmt);
  end_artificial_method_body (mdecl);
  current_function_decl = saved_current_function_decl;
  TYPE_DOT_CLASS (class) = mdecl;

  return mdecl;
}

static tree
build_dot_class_method_invocation (name)
     tree name;
{
  tree s = make_node (STRING_CST);
  TREE_STRING_LENGTH (s) = IDENTIFIER_LENGTH (name);
  TREE_STRING_POINTER (s) = obstack_alloc (expression_obstack,
					   TREE_STRING_LENGTH (s)+1);
  strcpy (TREE_STRING_POINTER (s), IDENTIFIER_POINTER (name));
  return build_method_invocation (build_wfl_node (get_identifier ("class$")),
				  build_tree_list (NULL_TREE, s));
}

/* This section of the code deals with constructor.  */

/* Craft a body for default constructor. Patch existing constructor
   bodies with call to super() and field initialization statements if
   necessary.  */

static void
fix_constructors (mdecl)
     tree mdecl;
{
  tree body = DECL_FUNCTION_BODY (mdecl);
  tree thisn_assign, compound = NULL_TREE;
  tree class_type = DECL_CONTEXT (mdecl);

  if (!body)
    {
      /* It is an error for the compiler to generate a default
	 constructor if the superclass doesn't have a constructor that
	 takes no argument, or the same args for an anonymous class */
      if (verify_constructor_super (mdecl))
	{
	  tree sclass_decl = TYPE_NAME (CLASSTYPE_SUPER (class_type));
	  tree save = DECL_NAME (mdecl);
	  const char *n = IDENTIFIER_POINTER (DECL_NAME (sclass_decl));
	  DECL_NAME (mdecl) = DECL_NAME (sclass_decl);
	  parse_error_context
	    (lookup_cl (TYPE_NAME (class_type)), 
	     "No constructor matching `%s' found in class `%s'",
	     lang_printable_name (mdecl, 0), n);
	  DECL_NAME (mdecl) = save;
	}
      
      /* The constructor body must be crafted by hand. It's the
	 constructor we defined when we realize we didn't have the
	 CLASSNAME() constructor */
      start_artificial_method_body (mdecl);
      
      /* We don't generate a super constructor invocation if we're
	 compiling java.lang.Object. build_super_invocation takes care
	 of that. */
      compound = java_method_add_stmt (mdecl, build_super_invocation (mdecl));

      /* Insert the instance initializer block right here, after the
         super invocation. */
      add_instance_initializer (mdecl);

      /* Insert an assignment to the this$<n> hidden field, if
         necessary */
      if ((thisn_assign = build_thisn_assign ()))
	java_method_add_stmt (mdecl, thisn_assign);

      end_artificial_method_body (mdecl);
    }
  /* Search for an explicit constructor invocation */
  else 
    {
      int found = 0;
      tree main_block = BLOCK_EXPR_BODY (body);
      
      while (body)
	switch (TREE_CODE (body))
	  {
	  case CALL_EXPR:
	    found = CALL_EXPLICIT_CONSTRUCTOR_P (body);
	    body = NULL_TREE;
	    break;
	  case COMPOUND_EXPR:
	  case EXPR_WITH_FILE_LOCATION:
	    body = TREE_OPERAND (body, 0);
	    break;
	  case BLOCK:
	    body = BLOCK_EXPR_BODY (body);
	    break;
	  default:
	    found = 0;
	    body = NULL_TREE;
	  }
      /* The constructor is missing an invocation of super() */
      if (!found)
	compound = add_stmt_to_compound (compound, NULL_TREE,
                                         build_super_invocation (mdecl));
      
      /* Insert the instance initializer block right here, after the
         super invocation. */
      add_instance_initializer (mdecl);

      /* Generate the assignment to this$<n>, if necessary */
      if ((thisn_assign = build_thisn_assign ()))
        compound = add_stmt_to_compound (compound, NULL_TREE, thisn_assign);

      /* Fix the constructor main block if we're adding extra stmts */
      if (compound)
	{
	  compound = add_stmt_to_compound (compound, NULL_TREE,
					   BLOCK_EXPR_BODY (main_block));
	  BLOCK_EXPR_BODY (main_block) = compound;
	}
    }
}

/* Browse constructors in the super class, searching for a constructor
   that doesn't take any argument. Return 0 if one is found, 1
   otherwise.  If the current class is an anonymous inner class, look
   for something that has the same signature. */

static int
verify_constructor_super (mdecl)
     tree mdecl;
{
  tree class = CLASSTYPE_SUPER (current_class);
  tree sdecl;

  if (!class)
    return 0;

  if (ANONYMOUS_CLASS_P (current_class))
    {
      tree mdecl_arg_type;
      SKIP_THIS_AND_ARTIFICIAL_PARMS (mdecl_arg_type, mdecl);
      for (sdecl = TYPE_METHODS (class); sdecl; sdecl = TREE_CHAIN (sdecl))
	if (DECL_CONSTRUCTOR_P (sdecl))
	  {
	    tree arg_type;
	    for (arg_type = TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (sdecl)));
		 arg_type != end_params_node && 
		   mdecl_arg_type != end_params_node;
		 arg_type = TREE_CHAIN (arg_type), 
		 mdecl_arg_type = TREE_CHAIN (mdecl_arg_type))
	      if (TREE_VALUE (arg_type) != TREE_VALUE (mdecl_arg_type))
		break;

	    if (arg_type == end_params_node && 
		mdecl_arg_type == end_params_node)
	      return 0;
	  }
    }
  else
    {
      for (sdecl = TYPE_METHODS (class); sdecl; sdecl = TREE_CHAIN (sdecl))
	{
	  if (DECL_CONSTRUCTOR_P (sdecl)
	      && TREE_CHAIN (TYPE_ARG_TYPES (TREE_TYPE (sdecl))) 
	         == end_params_node)
	    return 0;
	}
    }
  return 1;
}

/* Generate code for all context remembered for code generation.  */

void
java_expand_classes ()
{
  int save_error_count = 0;
  static struct parser_ctxt *saved_ctxp = NULL;

  java_parse_abort_on_error ();
  if (!(ctxp = ctxp_for_generation))
    return;
  java_layout_classes ();
  java_parse_abort_on_error ();

  /* The list of packages declaration seen so far needs to be
     reversed, so that package declared in a file being compiled gets
     priority over packages declared as a side effect of parsing other
     files.*/
  package_list = nreverse (package_list);

  saved_ctxp = ctxp_for_generation;
  for (; ctxp_for_generation; ctxp_for_generation = ctxp_for_generation->next)
    {
      ctxp = ctxp_for_generation;
      lang_init_source (2);	       /* Error msgs have method prototypes */
      java_complete_expand_classes (); /* Complete and expand classes */
      java_parse_abort_on_error ();
    }

  /* Find anonymous classes and expand their constructor, now they
     have been fixed. */
  for (ctxp_for_generation = saved_ctxp;
       ctxp_for_generation; ctxp_for_generation = ctxp_for_generation->next)
    {
      tree current;
      ctxp = ctxp_for_generation;
      for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
	{
	  current_class = TREE_TYPE (current);
	  if (ANONYMOUS_CLASS_P (current_class))
	    {
	      tree d;
	      for (d = TYPE_METHODS (current_class); d; d = TREE_CHAIN (d))
		{
		  if (DECL_CONSTRUCTOR_P (d))
		    {
		      restore_line_number_status (1);
		      reset_method_name (d);
		      java_complete_expand_method (d);
		      restore_line_number_status (0);
		      break;	/* We now there are no other ones */
		    }
		}
	    }
	}
    }

  /* If we've found error at that stage, don't try to generate
     anything, unless we're emitting xrefs or checking the syntax only
     (but not using -fsyntax-only for the purpose of generating
     bytecode. */
  if (java_error_count && !flag_emit_xref 
      && (!flag_syntax_only && !flag_emit_class_files))
    return;

  /* Now things are stable, go for generation of the class data. */
  for (ctxp_for_generation = saved_ctxp;
       ctxp_for_generation; ctxp_for_generation = ctxp_for_generation->next)
    {
      tree current;
      ctxp = ctxp_for_generation;
      for (current = ctxp->class_list; current; current = TREE_CHAIN (current))
	{
	  current_class = TREE_TYPE (current);
	  outgoing_cpool = TYPE_CPOOL (current_class);
	  if (flag_emit_class_files)
	    write_classfile (current_class);
	  if (flag_emit_xref)
	    expand_xref (current_class);
	  else if (! flag_syntax_only)
	    finish_class ();
	}
    }
}

/* Wrap non WFL PRIMARY around a WFL and set EXPR_WFL_QUALIFICATION to
   a tree list node containing RIGHT. Fore coming RIGHTs will be
   chained to this hook. LOCATION contains the location of the
   separating `.' operator.  */

static tree
make_qualified_primary (primary, right, location)
     tree primary, right;
     int location;
{
  tree wfl;

  if (TREE_CODE (primary) != EXPR_WITH_FILE_LOCATION)
    wfl = build_wfl_wrap (primary);
  else
    {
      wfl = primary;
      /* If wfl wasn't qualified, we build a first anchor */
      if (!EXPR_WFL_QUALIFICATION (wfl))
	EXPR_WFL_QUALIFICATION (wfl) = build_tree_list (wfl, NULL_TREE);
    }

  /* And chain them */
  EXPR_WFL_LINECOL (right) = location;
  chainon (EXPR_WFL_QUALIFICATION (wfl), build_tree_list (right, NULL_TREE));
  PRIMARY_P (wfl) =  1;
  return wfl;
}

/* Simple merge of two name separated by a `.' */

static tree
merge_qualified_name (left, right)
     tree left, right;
{
  tree node;
  if (!left && !right)
    return NULL_TREE;

  if (!left)
    return right;

  if (!right)
    return left;

  obstack_grow (&temporary_obstack, IDENTIFIER_POINTER (left),
		IDENTIFIER_LENGTH (left));
  obstack_1grow (&temporary_obstack, '.');
  obstack_grow0 (&temporary_obstack, IDENTIFIER_POINTER (right),
		 IDENTIFIER_LENGTH (right));
  node =  get_identifier (obstack_base (&temporary_obstack));
  obstack_free (&temporary_obstack, obstack_base (&temporary_obstack));
  QUALIFIED_P (node) = 1;
  return node;
}

/* Merge the two parts of a qualified name into LEFT.  Set the
   location information of the resulting node to LOCATION, usually
   inherited from the location information of the `.' operator. */

static tree
make_qualified_name (left, right, location)
     tree left, right;
     int location;
{
#ifdef USE_COMPONENT_REF
  tree node = build (COMPONENT_REF, NULL_TREE, left, right);
  EXPR_WFL_LINECOL (node) = location;
  return node;
#else
  tree left_id = EXPR_WFL_NODE (left);
  tree right_id = EXPR_WFL_NODE (right);
  tree wfl, merge;

  merge = merge_qualified_name (left_id, right_id);

  /* Left wasn't qualified and is now qualified */
  if (!QUALIFIED_P (left_id))
    {
      tree wfl = build_expr_wfl (left_id, ctxp->filename, 0, 0);
      EXPR_WFL_LINECOL (wfl) = EXPR_WFL_LINECOL (left);
      EXPR_WFL_QUALIFICATION (left) = build_tree_list (wfl, NULL_TREE);
    }
  
  wfl = build_expr_wfl (right_id, ctxp->filename, 0, 0);
  EXPR_WFL_LINECOL (wfl) = location;
  chainon (EXPR_WFL_QUALIFICATION (left), build_tree_list (wfl, NULL_TREE));

  EXPR_WFL_NODE (left) = merge;
  return left;
#endif
}

/* Extract the last identifier component of the qualified in WFL. The
   last identifier is removed from the linked list */

static tree
cut_identifier_in_qualified (wfl)
     tree wfl;
{
  tree q;
  tree previous = NULL_TREE;
  for (q = EXPR_WFL_QUALIFICATION (wfl); ; previous = q, q = TREE_CHAIN (q))
    if (!TREE_CHAIN (q))
      {
	if (!previous)
	  fatal ("Operating on a non qualified qualified WFL - cut_identifier_in_qualified");
	TREE_CHAIN (previous) = NULL_TREE;
	return TREE_PURPOSE (q);
      }
}

/* Resolve the expression name NAME. Return its decl.  */

static tree
resolve_expression_name (id, orig)
     tree id;
     tree *orig;
{
  tree name = EXPR_WFL_NODE (id);
  tree decl;

  /* 6.5.5.1: Simple expression names */
  if (!PRIMARY_P (id) && !QUALIFIED_P (name))
    {
      /* 15.13.1: NAME can appear within the scope of a local variable
         declaration */
      if ((decl = IDENTIFIER_LOCAL_VALUE (name)))
        return decl;

      /* 15.13.1: NAME can appear within a class declaration */
      else 
        {
	  decl = lookup_field_wrapper (current_class, name);
	  if (decl)
	    {
	      tree access = NULL_TREE;
	      int fs = FIELD_STATIC (decl);

	      /* If we're accessing an outer scope local alias, make
		 sure we change the name of the field we're going to
		 build access to. */
	      if (FIELD_LOCAL_ALIAS_USED (decl))
		name = DECL_NAME (decl);

	      /* Instance variable (8.3.1.1) can't appear within
		 static method, static initializer or initializer for
		 a static variable. */
	      if (!fs && METHOD_STATIC (current_function_decl))
	        {
		  static_ref_err (id, name, current_class);
		  return error_mark_node;
		}
	      /* Instance variables can't appear as an argument of
		 an explicit constructor invocation */
	      if (!fs && ctxp->explicit_constructor_p)
		{
		  parse_error_context
		    (id, "Can't reference `%s' before the superclass constructor has been called", IDENTIFIER_POINTER (name));
		  return error_mark_node;
		}

	      /* If we're processing an inner class and we're trying
		 to access a field belonging to an outer class, build
		 the access to the field */
	      if (!fs && outer_field_access_p (current_class, decl))
		return build_outer_field_access (id, decl);

	      /* Otherwise build what it takes to access the field */
	      access = build_field_ref ((fs ? NULL_TREE : current_this),
					DECL_CONTEXT (decl), name);
	      if (fs && !flag_emit_class_files && !flag_emit_xref)
		access = build_class_init (DECL_CONTEXT (access), access);
	      /* We may be asked to save the real field access node */
	      if (orig)
		*orig = access;
	      /* And we return what we got */
	      return access;
	    }
	  /* Fall down to error report on undefined variable */
	}
    }
  /* 6.5.5.2 Qualified Expression Names */
  else
    {
      if (orig)
	*orig = NULL_TREE;
      qualify_ambiguous_name (id);
      /* 15.10.1 Field Access Using a Primary and/or Expression Name */
      /* 15.10.2: Accessing Superclass Members using super */
      return resolve_field_access (id, orig, NULL);
    }

  /* We've got an error here */
  parse_error_context (id, "Undefined variable `%s'", 
		       IDENTIFIER_POINTER (name));

  return error_mark_node;
}

static void
static_ref_err (wfl, field_id, class_type)
    tree wfl, field_id, class_type;
{
  parse_error_context 
    (wfl, 
     "Can't make a static reference to nonstatic variable `%s' in class `%s'",
     IDENTIFIER_POINTER (field_id), 
     IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (class_type))));
}

/* 15.10.1 Field Acess Using a Primary and/or Expression Name.
   We return something suitable to generate the field access. We also
   return the field decl in FIELD_DECL and its type in FIELD_TYPE.  If
   recipient's address can be null. */

static tree
resolve_field_access (qual_wfl, field_decl, field_type)
     tree qual_wfl;
     tree *field_decl, *field_type;
{
  int is_static = 0;
  tree field_ref;
  tree decl, where_found, type_found;

  if (resolve_qualified_expression_name (qual_wfl, &decl,
					 &where_found, &type_found))
    return error_mark_node;

  /* Resolve the LENGTH field of an array here */
  if (DECL_NAME (decl) == length_identifier_node && TYPE_ARRAY_P (type_found)
      && ! flag_emit_class_files && ! flag_emit_xref)
    {
      tree length = build_java_array_length_access (where_found);
      field_ref =
	build_java_arraynull_check (type_found, length, int_type_node);
    }
  /* We might have been trying to resolve field.method(). In which
     case, the resolution is over and decl is the answer */
  else if (JDECL_P (decl) && IDENTIFIER_LOCAL_VALUE (DECL_NAME (decl)) == decl)
    field_ref = decl;
  else if (JDECL_P (decl))
    {
      int static_final_found = 0;
      if (!type_found)
	type_found = DECL_CONTEXT (decl);
      is_static = JDECL_P (decl) && FIELD_STATIC (decl);
      if (FIELD_FINAL (decl) 
	  && JPRIMITIVE_TYPE_P (TREE_TYPE (decl))
	  && DECL_LANG_SPECIFIC (decl)
	  && DECL_INITIAL (decl))
	{
	  field_ref = DECL_INITIAL (decl);
	  static_final_found = 1;
	}
      else
	field_ref = build_field_ref ((is_static && !flag_emit_xref? 
				      NULL_TREE : where_found), 
				     type_found, DECL_NAME (decl));
      if (field_ref == error_mark_node)
	return error_mark_node;
      if (is_static && !static_final_found 
	  && !flag_emit_class_files && !flag_emit_xref)
	field_ref = build_class_init (type_found, field_ref);
    }
  else
    field_ref = decl;

  if (field_decl)
    *field_decl = decl;
  if (field_type)
    *field_type = (QUAL_DECL_TYPE (decl) ? 
		   QUAL_DECL_TYPE (decl) : TREE_TYPE (decl));
  return field_ref;
}

/* If NODE is an access to f static field, strip out the class
   initialization part and return the field decl, otherwise, return
   NODE. */

static tree
strip_out_static_field_access_decl (node)
    tree node;
{
  if (TREE_CODE (node) == COMPOUND_EXPR)
    {
      tree op1 = TREE_OPERAND (node, 1);
      if (TREE_CODE (op1) == COMPOUND_EXPR)
	 {
	   tree call = TREE_OPERAND (op1, 0);
	   if (TREE_CODE (call) == CALL_EXPR
	       && TREE_CODE (TREE_OPERAND (call, 0)) == ADDR_EXPR
	       && TREE_OPERAND (TREE_OPERAND (call, 0), 0)
	       == soft_initclass_node)
	     return TREE_OPERAND (op1, 1);
	 }
      else if (JDECL_P (op1))
	return op1;
    }
  return node;
}

/* 6.5.5.2: Qualified Expression Names */

static int
resolve_qualified_expression_name (wfl, found_decl, where_found, type_found)
     tree wfl;
     tree *found_decl, *type_found, *where_found;
{
  int from_type = 0;		/* Field search initiated from a type */
  int from_super = 0, from_cast = 0, from_qualified_this = 0;
  int previous_call_static = 0;
  int is_static;
  tree decl = NULL_TREE, type = NULL_TREE, q;
  /* For certain for of inner class instantiation */
  tree saved_current, saved_this;		
#define RESTORE_THIS_AND_CURRENT_CLASS 				\
  { current_class = saved_current; current_this = saved_this;}

  *type_found = *where_found = NULL_TREE;

  for (q = EXPR_WFL_QUALIFICATION (wfl); q; q = TREE_CHAIN (q))
    {
      tree qual_wfl = QUAL_WFL (q);
      tree ret_decl;		/* for EH checking */
      int location;		/* for EH checking */

      /* 15.10.1 Field Access Using a Primary */
      switch (TREE_CODE (qual_wfl))
	{
	case CALL_EXPR:
	case NEW_CLASS_EXPR:
	  /* If the access to the function call is a non static field,
	     build the code to access it. */
	  if (JDECL_P (decl) && !FIELD_STATIC (decl))
	    {
	      decl = maybe_access_field (decl, *where_found, 
					 DECL_CONTEXT (decl));
	      if (decl == error_mark_node)
		return 1;
	    }

	  /* And code for the function call */
	  if (complete_function_arguments (qual_wfl))
	    return 1;

	  /* We might have to setup a new current class and a new this
	     for the search of an inner class, relative to the type of
	     a expression resolved as `decl'. The current values are
	     saved and restored shortly after */
	  saved_current = current_class;
	  saved_this = current_this;
	  if (decl && TREE_CODE (qual_wfl) == NEW_CLASS_EXPR)
	    {
	      current_class = type;
	      current_this = decl;
	    }

	  if (from_super && TREE_CODE (qual_wfl) == CALL_EXPR)
	    CALL_USING_SUPER (qual_wfl) = 1;
	  location = (TREE_CODE (qual_wfl) == CALL_EXPR ?
		      EXPR_WFL_LINECOL (TREE_OPERAND (qual_wfl, 0)) : 0);
	  *where_found = patch_method_invocation (qual_wfl, decl, type, 
						  &is_static, &ret_decl);
	  if (*where_found == error_mark_node)
	    {
	      RESTORE_THIS_AND_CURRENT_CLASS;
	      return 1;
	    }
	  *type_found = type = QUAL_DECL_TYPE (*where_found);

	  /* If we're creating an inner class instance, check for that
	     an enclosing instance is in scope */
	  if (TREE_CODE (qual_wfl) == NEW_CLASS_EXPR
	      && INNER_ENCLOSING_SCOPE_CHECK (type))
	    {
	      parse_error_context 
		(qual_wfl, "No enclosing instance for inner class `%s' is in scope%s",
		 lang_printable_name (type, 0),
		 (!current_this ? "" :
		  "; an explicit one must be provided when creating this inner class"));
	      RESTORE_THIS_AND_CURRENT_CLASS;
	      return 1;
	    }

	  /* In case we had to change then to resolve a inner class
	     instantiation using a primary qualified by a `new' */
	  RESTORE_THIS_AND_CURRENT_CLASS;

	  /* EH check */
	  if (location)
	    check_thrown_exceptions (location, ret_decl);

	  /* If the previous call was static and this one is too,
	     build a compound expression to hold the two (because in
	     that case, previous function calls aren't transported as
	     forcoming function's argument. */
	  if (previous_call_static && is_static)
	    {
	      decl = build (COMPOUND_EXPR, type, decl, *where_found);
	      TREE_SIDE_EFFECTS (decl) = 1;
	    }
	  else
	    {
	      previous_call_static = is_static;
	      decl = *where_found;
	    }
	  from_type = 0;
	  continue;

	case NEW_ARRAY_EXPR:
	case NEW_ANONYMOUS_ARRAY_EXPR:
	  *where_found = decl = java_complete_tree (qual_wfl);
	  if (decl == error_mark_node)
	    return 1;
	  *type_found = type = QUAL_DECL_TYPE (decl);
	  CLASS_LOADED_P (type) = 1;
	  continue;

	case CONVERT_EXPR:
	  *where_found = decl = java_complete_tree (qual_wfl);
	  if (decl == error_mark_node)
	    return 1;
	  *type_found = type = QUAL_DECL_TYPE (decl);
	  from_cast = 1;
	  continue;

	case CONDITIONAL_EXPR:
	case STRING_CST:
	case MODIFY_EXPR:
	  *where_found = decl = java_complete_tree (qual_wfl);
	  if (decl == error_mark_node)
	    return 1;
	  *type_found = type = QUAL_DECL_TYPE (decl);
	  continue;

	case ARRAY_REF:
	  /* If the access to the function call is a non static field,
	     build the code to access it. */
	  if (JDECL_P (decl) && !FIELD_STATIC (decl))
	    {
	      decl = maybe_access_field (decl, *where_found, type);
	      if (decl == error_mark_node)
		return 1;
	    }
	  /* And code for the array reference expression */
	  decl = java_complete_tree (qual_wfl);
	  if (decl == error_mark_node)
	    return 1;
	  type = QUAL_DECL_TYPE (decl);
	  continue;

	case PLUS_EXPR:
	  if ((decl = java_complete_tree (qual_wfl)) == error_mark_node)
	    return 1;
	  if ((type = patch_string (decl)))
	    decl = type;
	  *where_found = QUAL_RESOLUTION (q) = decl;
	  *type_found = type = TREE_TYPE (decl);
	  break;

	case CLASS_LITERAL:
	  if ((decl = java_complete_tree (qual_wfl)) == error_mark_node)
	    return 1;
	  *where_found = QUAL_RESOLUTION (q) = decl;
	  *type_found = type = TREE_TYPE (decl);
	  break;

	default:
	  /* Fix for -Wall Just go to the next statement. Don't
             continue */
	  break;
	}

      /* If we fall here, we weren't processing a (static) function call. */
      previous_call_static = 0;

      /* It can be the keyword THIS */
      if (EXPR_WFL_NODE (qual_wfl) == this_identifier_node)
	{
	  if (!current_this)
	    {
	      parse_error_context 
		(wfl, "Keyword `this' used outside allowed context");
	      return 1;
	    }
	  if (ctxp->explicit_constructor_p)
	    {
	      parse_error_context (wfl, "Can't reference `this' before the superclass constructor has been called");
	      return 1;
	    }
	  /* We have to generate code for intermediate acess */
	  if (!from_type || TREE_TYPE (TREE_TYPE (current_this)) == type)
	    {
	      *where_found = decl = current_this;
	      *type_found = type = QUAL_DECL_TYPE (decl);
	    }
	  /* We're trying to access the this from somewhere else... */
	  else
	    {
	      *where_found = decl = build_current_thisn (type);
	      from_qualified_this = 1;
	    }

	  from_type = 0;
	  continue;
	}

      /* 15.10.2 Accessing Superclass Members using SUPER */
      if (EXPR_WFL_NODE (qual_wfl) == super_identifier_node)
	{
	  tree node;
	  /* Check on the restricted use of SUPER */
	  if (METHOD_STATIC (current_function_decl)
	      || current_class == object_type_node)
	    {
	      parse_error_context 
		(wfl, "Keyword `super' used outside allowed context");
	      return 1;
	    }
	  /* Otherwise, treat SUPER as (SUPER_CLASS)THIS */
	  node = build_cast (EXPR_WFL_LINECOL (qual_wfl), 
			     CLASSTYPE_SUPER (current_class),
			     build_this (EXPR_WFL_LINECOL (qual_wfl)));
	  *where_found = decl = java_complete_tree (node);
	  if (decl == error_mark_node)
	    return 1;
	  *type_found = type = QUAL_DECL_TYPE (decl);
	  from_super = from_type = 1;
	  continue;
	}

      /* 15.13.1: Can't search for field name in packages, so we
	 assume a variable/class name was meant. */
      if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
	{
	  tree name = resolve_package (wfl, &q);
	  if (name)
	    {
	      tree list;
	      *where_found = decl = resolve_no_layout (name, qual_wfl);
	      /* We wan't to be absolutely that the class is laid
                 out. We're going to search something inside it. */
	      *type_found = type = TREE_TYPE (decl);
	      layout_class (type);
	      from_type = 1;

	      /* Fix them all the way down, if any are left. */
	      if (q)
		{
		  list = TREE_CHAIN (q);
		  while (list)
		    {
		      RESOLVE_EXPRESSION_NAME_P (QUAL_WFL (list)) = 1;
		      RESOLVE_PACKAGE_NAME_P (QUAL_WFL (list)) = 0;
		      list = TREE_CHAIN (list);
		    }
		}
	    }
	  else
	    {
	      if (from_super || from_cast)
		parse_error_context 
		  ((from_cast ? qual_wfl : wfl),
		   "No variable `%s' defined in class `%s'",
		   IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)),
		   lang_printable_name (type, 0));
	      else
		parse_error_context
		  (qual_wfl, "Undefined variable or class name: `%s'",
		   IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)));
	      return 1;
	    }
	}

      /* We have a type name. It's been already resolved when the
	 expression was qualified. */
      else if (RESOLVE_TYPE_NAME_P (qual_wfl))
	{
	  if (!(decl = QUAL_RESOLUTION (q)))
	    return 1;		/* Error reported already */

	  /* Sneak preview. If next we see a `new', we're facing a
	     qualification with resulted in a type being selected
	     instead of a field.  Report the error */
	  if(TREE_CHAIN (q) 
	     && TREE_CODE (TREE_PURPOSE (TREE_CHAIN (q))) == NEW_CLASS_EXPR)
	    {
	      parse_error_context (qual_wfl, "Undefined variable `%s'",
				   IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
	      return 1;
	    }

	  if (not_accessible_p (TREE_TYPE (decl), decl, 0))
	    {
	      parse_error_context 
		(qual_wfl, "Can't access %s field `%s.%s' from `%s'",
		 java_accstring_lookup (get_access_flags_from_decl (decl)),
		 GET_TYPE_NAME (type),
		 IDENTIFIER_POINTER (DECL_NAME (decl)),
		 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
	      return 1;
	    }
	  check_deprecation (qual_wfl, decl);

	  type = TREE_TYPE (decl);
	  from_type = 1;
	}
      /* We resolve and expression name */
      else 
	{
	  tree field_decl = NULL_TREE;

	  /* If there exists an early resolution, use it. That occurs
	     only once and we know that there are more things to
	     come. Don't do that when processing something after SUPER
	     (we need more thing to be put in place below */
	  if (!from_super && QUAL_RESOLUTION (q))
	    {
	      decl = QUAL_RESOLUTION (q);
	      if (!type)
		{
		  if (TREE_CODE (decl) == FIELD_DECL && !FIELD_STATIC (decl))
		    {
		      if (current_this)
			*where_found = current_this;
		      else
			{
			  static_ref_err (qual_wfl, DECL_NAME (decl),
					  current_class);
			  return 1;
			}
		    }
		  else
		    {
		      *where_found = TREE_TYPE (decl);
		      if (TREE_CODE (*where_found) == POINTER_TYPE)
			*where_found = TREE_TYPE (*where_found);
		    }
		}
	    }

	  /* We have to search for a field, knowing the type of its
             container. The flag FROM_TYPE indicates that we resolved
             the last member of the expression as a type name, which
             means that for the resolution of this field, we'll look
             for other errors than if it was resolved as a member of
             an other field. */
	  else
	    {
	      int is_static;
	      tree field_decl_type; /* For layout */

	      if (!from_type && !JREFERENCE_TYPE_P (type))
		{
		  parse_error_context 
		    (qual_wfl, "Attempt to reference field `%s' in `%s %s'",
		     IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)),
		     lang_printable_name (type, 0),
		     IDENTIFIER_POINTER (DECL_NAME (field_decl)));
		  return 1;
		}
	      
	      field_decl = lookup_field_wrapper (type,
						 EXPR_WFL_NODE (qual_wfl));
	      if (field_decl == NULL_TREE)
		{
		  parse_error_context 
		    (qual_wfl, "No variable `%s' defined in type `%s'",
		     IDENTIFIER_POINTER (EXPR_WFL_NODE (qual_wfl)), 
		     GET_TYPE_NAME (type));
		  return 1;
		}
	      if (field_decl == error_mark_node)
		return 1;

	      /* Layout the type of field_decl, since we may need
                 it. Don't do primitive types or loaded classes. The
                 situation of non primitive arrays may not handled
                 properly here. FIXME */
	      if (TREE_CODE (TREE_TYPE (field_decl)) == POINTER_TYPE)
		field_decl_type = TREE_TYPE (TREE_TYPE (field_decl));
	      else
		field_decl_type = TREE_TYPE (field_decl);
	      if (!JPRIMITIVE_TYPE_P (field_decl_type) 
		  && !CLASS_LOADED_P (field_decl_type)
		  && !TYPE_ARRAY_P (field_decl_type))
		resolve_and_layout (field_decl_type, NULL_TREE);
	      if (TYPE_ARRAY_P (field_decl_type))
		CLASS_LOADED_P (field_decl_type) = 1;
	      
	      /* Check on accessibility here */
	      if (not_accessible_p (type, field_decl, from_super))
		{
		  parse_error_context 
		    (qual_wfl,
		     "Can't access %s field `%s.%s' from `%s'",
		     java_accstring_lookup 
		       (get_access_flags_from_decl (field_decl)),
		     GET_TYPE_NAME (type),
		     IDENTIFIER_POINTER (DECL_NAME (field_decl)),
		     IDENTIFIER_POINTER 
		       (DECL_NAME (TYPE_NAME (current_class))));
		  return 1;
		}
	      check_deprecation (qual_wfl, field_decl);
	      
	      /* There are things to check when fields are accessed
	         from type. There are no restrictions on a static
	         declaration of the field when it is accessed from an
	         interface */
	      is_static = FIELD_STATIC (field_decl);
	      if (!from_super && from_type 
		  && !TYPE_INTERFACE_P (type) 
		  && !is_static 
		  && (current_function_decl 
		      && METHOD_STATIC (current_function_decl)))
		{
		  static_ref_err (qual_wfl, EXPR_WFL_NODE (qual_wfl), type);
		  return 1;
		}
	      from_cast = from_super = 0;

	      /* It's an access from a type but it isn't static, we
		 make it relative to `this'. */
	      if (!is_static && from_type)
		decl = current_this;

	      /* If we need to generate something to get a proper
		 handle on what this field is accessed from, do it
		 now. */
	      if (!is_static)
		{
		  decl = maybe_access_field (decl, *where_found, *type_found);
		  if (decl == error_mark_node)
		    return 1;
		}

	      /* We want to keep the location were found it, and the type
		 we found. */
	      *where_found = decl;
	      *type_found = type;

	      /* Generate the correct expression for field access from
		 qualified this */
	      if (from_qualified_this)
		{
		  field_decl = build_outer_field_access (qual_wfl, field_decl);
		  from_qualified_this = 0;
		}

	      /* This is the decl found and eventually the next one to
		 search from */
	      decl = field_decl;
	    }
	  from_type = 0;
	  type = QUAL_DECL_TYPE (decl);

	  /* Sneak preview. If decl is qualified by a `new', report
             the error here to be accurate on the peculiar construct */
	  if (TREE_CHAIN (q) 
	      && TREE_CODE (TREE_PURPOSE (TREE_CHAIN (q))) == NEW_CLASS_EXPR
	      && !JREFERENCE_TYPE_P (type))
	    {
	      parse_error_context (qual_wfl, "Attempt to reference field `new' in a `%s'", 
				   lang_printable_name (type, 0));
	      return 1;
	    }
	}
      /* `q' might have changed due to a after package resolution
         re-qualification */
      if (!q)
	break;
    }
  *found_decl = decl;
  return 0;
}

/* 6.6 Qualified name and access control. Returns 1 if MEMBER (a decl)
   can't be accessed from REFERENCE (a record type). */

static int
not_accessible_p (reference, member, from_super)
     tree reference, member;
     int from_super;
{
  int access_flag = get_access_flags_from_decl (member);

  /* Access always granted for members declared public */
  if (access_flag & ACC_PUBLIC)
    return 0;
  
  /* Check access on protected members */
  if (access_flag & ACC_PROTECTED)
    {
      /* Access granted if it occurs from within the package
         containing the class in which the protected member is
         declared */
      if (class_in_current_package (DECL_CONTEXT (member)))
	return 0;

      /* If accessed with the form `super.member', then access is granted */
      if (from_super)
	return 0;

      /* Otherwise, access is granted if occuring from the class where
	 member is declared or a subclass of it */
      if (inherits_from_p (reference, DECL_CONTEXT (member)))
	return 0;
      return 1;
    }

  /* Check access on private members. Access is granted only if it
     occurs from within the class in which it is declared. Exceptions
     are accesses from inner-classes. This section is probably not
     complete. FIXME */
  if (access_flag & ACC_PRIVATE)
    return (current_class == DECL_CONTEXT (member) ? 0 : 
	    (INNER_CLASS_TYPE_P (current_class) ? 0 : 1));

  /* Default access are permitted only when occuring within the
     package in which the type (REFERENCE) is declared. In other words,
     REFERENCE is defined in the current package */
  if (ctxp->package)
    return !class_in_current_package (reference);

  /* Otherwise, access is granted */
  return 0;
}

/* Test deprecated decl access.  */
static void
check_deprecation (wfl, decl)
     tree wfl, decl;
{
  const char *file = DECL_SOURCE_FILE (decl);
  /* Complain if the field is deprecated and the file it was defined
     in isn't compiled at the same time the file which contains its
     use is */
  if (DECL_DEPRECATED (decl) 
      && !IS_A_COMMAND_LINE_FILENAME_P (get_identifier (file)))
    {
      char the [20];
      switch (TREE_CODE (decl))
	{
	case FUNCTION_DECL:
	  strcpy (the, "method");
	  break;
	case FIELD_DECL:
	  strcpy (the, "field");
	  break;
	case TYPE_DECL:
	  strcpy (the, "class");
	  break;
	default:
	  fatal ("unexpected DECL code - check_deprecation");
	}
      parse_warning_context 
	(wfl, "The %s `%s' in class `%s' has been deprecated", 
	 the, lang_printable_name (decl, 0),
	 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (decl)))));
    }
}

/* Returns 1 if class was declared in the current package, 0 otherwise */

static int
class_in_current_package (class)
     tree class;
{
  static tree cache = NULL_TREE;
  int qualified_flag;
  tree left;

  if (cache == class)
    return 1;

  qualified_flag = QUALIFIED_P (DECL_NAME (TYPE_NAME (class)));

  /* If the current package is empty and the name of CLASS is
     qualified, class isn't in the current package.  If there is a
     current package and the name of the CLASS is not qualified, class
     isn't in the current package */
  if ((!ctxp->package && qualified_flag) || (ctxp->package && !qualified_flag))
    return 0;

  /* If there is not package and the name of CLASS isn't qualified,
     they belong to the same unnamed package */
  if (!ctxp->package && !qualified_flag)
    return 1;

  /* Compare the left part of the name of CLASS with the package name */
  breakdown_qualified (&left, NULL, DECL_NAME (TYPE_NAME (class)));
  if (ctxp->package == left)
    {
      cache = class;
      return 1;
    }
  return 0;
}

/* This function may generate code to access DECL from WHERE. This is
   done only if certain conditions meet.  */

static tree
maybe_access_field (decl, where, type)
  tree decl, where, type;
{
  if (TREE_CODE (decl) == FIELD_DECL && decl != current_this
      && !FIELD_STATIC (decl))
    decl = build_field_ref (where ? where : current_this, 
			    (type ? type : DECL_CONTEXT (decl)),
			    DECL_NAME (decl));
  return decl;
}

/* Build a method invocation, by patching PATCH. If non NULL
   and according to the situation, PRIMARY and WHERE may be
   used. IS_STATIC is set to 1 if the invoked function is static. */

static tree
patch_method_invocation (patch, primary, where, is_static, ret_decl)
     tree patch, primary, where;
     int *is_static;
     tree *ret_decl;
{
  tree wfl = TREE_OPERAND (patch, 0);
  tree args = TREE_OPERAND (patch, 1);
  tree name = EXPR_WFL_NODE (wfl);
  tree list;
  int is_static_flag = 0;
  int is_super_init = 0;
  tree this_arg = NULL_TREE;
  
  /* Should be overriden if everything goes well. Otherwise, if
     something fails, it should keep this value. It stop the
     evaluation of a bogus assignment. See java_complete_tree,
     MODIFY_EXPR: for the reasons why we sometimes want to keep on
     evaluating an assignment */
  TREE_TYPE (patch) = error_mark_node;

  /* Since lookup functions are messing with line numbers, save the
     context now.  */
  java_parser_context_save_global ();

  /* 15.11.1: Compile-Time Step 1: Determine Class or Interface to Search */

  /* Resolution of qualified name, excluding constructors */
  if (QUALIFIED_P (name) && !CALL_CONSTRUCTOR_P (patch))
    {
      tree identifier, identifier_wfl, type, resolved;
      /* Extract the last IDENTIFIER of the qualified
	 expression. This is a wfl and we will use it's location
	 data during error report. */
      identifier_wfl = cut_identifier_in_qualified (wfl);
      identifier = EXPR_WFL_NODE (identifier_wfl);
      
      /* Given the context, IDENTIFIER is syntactically qualified
	 as a MethodName. We need to qualify what's before */
      qualify_ambiguous_name (wfl);
      resolved = resolve_field_access (wfl, NULL, NULL);

      if (resolved == error_mark_node)
	PATCH_METHOD_RETURN_ERROR ();

      type = GET_SKIP_TYPE (resolved);
      resolve_and_layout (type, NULL_TREE);
      list = lookup_method_invoke (0, identifier_wfl, type, identifier, args);
      args = nreverse (args);

      /* We're resolving a call from a type */
      if (TREE_CODE (resolved) == TYPE_DECL)
	{
	  if (CLASS_INTERFACE (resolved))
	    {
	      parse_error_context
		(identifier_wfl,
		"Can't make static reference to method `%s' in interface `%s'",
		 IDENTIFIER_POINTER (identifier), 
		 IDENTIFIER_POINTER (name));
	      PATCH_METHOD_RETURN_ERROR ();
	    }
	  if (list && !METHOD_STATIC (list))
	    {
	      char *fct_name = xstrdup (lang_printable_name (list, 0));
	      parse_error_context 
		(identifier_wfl,
		 "Can't make static reference to method `%s %s' in class `%s'",
		 lang_printable_name (TREE_TYPE (TREE_TYPE (list)), 0), 
		 fct_name, IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (type))));
	      free (fct_name);
	      PATCH_METHOD_RETURN_ERROR ();
	    }
	}
      else
	this_arg = primary = resolved;
      
      /* IDENTIFIER_WFL will be used to report any problem further */
      wfl = identifier_wfl;
    }
  /* Resolution of simple names, names generated after a primary: or
     constructors */
  else
    {
      tree class_to_search = NULL_TREE;
      int lc;			/* Looking for Constructor */
      
      /* We search constructor in their target class */
      if (CALL_CONSTRUCTOR_P (patch))
	{
	  if (TREE_CODE (patch) == NEW_CLASS_EXPR)
	    class_to_search = EXPR_WFL_NODE (wfl);
	  else if (EXPR_WFL_NODE (TREE_OPERAND (patch, 0)) == 
		   this_identifier_node)
	    class_to_search = NULL_TREE;
	  else if (EXPR_WFL_NODE (TREE_OPERAND (patch, 0)) ==
		   super_identifier_node)
	    {
	      is_super_init = 1;
	      if (CLASSTYPE_SUPER (current_class))
		class_to_search = 
		  DECL_NAME (TYPE_NAME (CLASSTYPE_SUPER (current_class)));
	      else
		{
		  parse_error_context (wfl, "Can't invoke super constructor on java.lang.Object");
		  PATCH_METHOD_RETURN_ERROR ();
		}
	    }

	  /* Class to search is NULL if we're searching the current one */
	  if (class_to_search)
	    {
	      class_to_search = resolve_and_layout (class_to_search, wfl);

	      if (!class_to_search)
		{
		  parse_error_context 
		    (wfl, "Class `%s' not found in type declaration",
		     IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
		  PATCH_METHOD_RETURN_ERROR ();
		}
	      
	      /* Can't instantiate an abstract class, but we can
	         invoke it's constructor. It's use within the `new'
	         context is denied here. */
	      if (CLASS_ABSTRACT (class_to_search) 
		  && TREE_CODE (patch) == NEW_CLASS_EXPR)
		{
		  parse_error_context 
		    (wfl, "Class `%s' is an abstract class. It can't be instantiated",
		     IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
		  PATCH_METHOD_RETURN_ERROR ();
		}

	      class_to_search = TREE_TYPE (class_to_search);
	    }
	  else
	    class_to_search = current_class;
	  lc = 1;
	}
      /* This is a regular search in the local class, unless an
         alternate class is specified. */
      else
	{
	  class_to_search = (where ? where : current_class);
	  lc = 0;
	}

      /* NAME is a simple identifier or comes from a primary. Search
	 in the class whose declaration contain the method being
	 invoked. */
      resolve_and_layout (class_to_search, NULL_TREE);

      list = lookup_method_invoke (lc, wfl, class_to_search, name, args);
      /* Don't continue if no method were found, as the next statement
         can't be executed then. */
      if (!list)
	PATCH_METHOD_RETURN_ERROR ();

      /* Check for static reference if non static methods */
      if (check_for_static_method_reference (wfl, patch, list, 
					     class_to_search, primary))
	PATCH_METHOD_RETURN_ERROR ();

      /* Check for inner classes creation from illegal contexts */
      if (lc && (INNER_CLASS_TYPE_P (class_to_search)
		 && !CLASS_STATIC (TYPE_NAME (class_to_search)))
	  && INNER_ENCLOSING_SCOPE_CHECK (class_to_search))
	{
	  parse_error_context 
	    (wfl, "No enclosing instance for inner class `%s' is in scope%s",
	     lang_printable_name (class_to_search, 0),
	     (!current_this ? "" :
	      "; an explicit one must be provided when creating this inner class"));
	  PATCH_METHOD_RETURN_ERROR ();
	}

      /* Non static methods are called with the current object extra
	 argument. If patch a `new TYPE()', the argument is the value
	 returned by the object allocator. If method is resolved as a
	 primary, use the primary otherwise use the current THIS. */
      args = nreverse (args);
      if (TREE_CODE (patch) != NEW_CLASS_EXPR)
	{
	  this_arg = primary ? primary : current_this;

	  /* If we're using an access method, things are different.
	     There are two familly of cases:

	     1) We're not generating bytecodes:

	     - LIST is non static. It's invocation is transformed from
	       x(a1,...,an) into this$<n>.x(a1,....an).
	     - LIST is static. It's invocation is transformed from
	       x(a1,...,an) into TYPE_OF(this$<n>).x(a1,....an)

	     2) We're generating bytecodes:
	     
	     - LIST is non static. It's invocation is transformed from
	       x(a1,....,an) into access$<n>(this$<n>,a1,...,an).
	     - LIST is static. It's invocation is transformed from
	       x(a1,....,an) into TYPEOF(this$<n>).x(a1,....an).

	     Of course, this$<n> can be abitrary complex, ranging from
	     this$0 (the immediate outer context) to 
	     access$0(access$0(...(this$0))). 
	     
	     maybe_use_access_method returns a non zero value if the
	     this_arg has to be moved into the (then generated) stub
	     argument list. In the mean time, the selected function
	     might have be replaced by a generated stub. */
	  if (maybe_use_access_method (is_super_init, &list, &this_arg))
	    args = tree_cons (NULL_TREE, this_arg, args);
	}
    }

  /* Merge point of all resolution schemes. If we have nothing, this
     is an error, already signaled */
  if (!list) 
    PATCH_METHOD_RETURN_ERROR ();

  /* Check accessibility, position the is_static flag, build and
     return the call */
  if (not_accessible_p (DECL_CONTEXT (current_function_decl), list, 0))
    {
      char *fct_name = xstrdup (lang_printable_name (list, 0));
      parse_error_context 
	(wfl, "Can't access %s method `%s %s.%s' from `%s'",
	 java_accstring_lookup (get_access_flags_from_decl (list)),
	 lang_printable_name (TREE_TYPE (TREE_TYPE (list)), 0), 
	 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (list)))), 
	 fct_name, IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))));
      free (fct_name);
      PATCH_METHOD_RETURN_ERROR ();
    }
  check_deprecation (wfl, list);

  /* If invoking a innerclass constructor, there are hidden parameters
     to pass */
  if (TREE_CODE (patch) == NEW_CLASS_EXPR 
      && PURE_INNER_CLASS_TYPE_P (DECL_CONTEXT (list)))
    {
      /* And make sure we add the accessed local variables to be saved
	 in field aliases. */
      args = build_alias_initializer_parameter_list
	(AIPL_FUNCTION_CTOR_INVOCATION, DECL_CONTEXT (list), args, NULL);

      /* We have to reverse things. Find out why. FIXME */
      if (ANONYMOUS_CLASS_P (DECL_CONTEXT (list)))
	args = nreverse (args);
      
      /* Secretely pass the current_this/primary as a second argument */
      if (primary || current_this)
	args = tree_cons (NULL_TREE, (primary ? primary : current_this), args);
      else
	args = tree_cons (NULL_TREE, integer_zero_node, args);
    }

  is_static_flag = METHOD_STATIC (list);
  if (! METHOD_STATIC (list) && this_arg != NULL_TREE)
    args = tree_cons (NULL_TREE, this_arg, args);

  /* In the context of an explicit constructor invocation, we can't
     invoke any method relying on `this'. Exceptions are: we're
     invoking a static function, primary exists and is not the current
     this, we're creating a new object. */
  if (ctxp->explicit_constructor_p 
      && !is_static_flag 
      && (!primary || primary == current_this)
      && (TREE_CODE (patch) != NEW_CLASS_EXPR))
    {
      parse_error_context (wfl, "Can't reference `this' before the superclass constructor has been called");
      PATCH_METHOD_RETURN_ERROR ();
    }
  java_parser_context_restore_global ();
  if (is_static) 
    *is_static = is_static_flag;
  /* Sometimes, we want the decl of the selected method. Such as for
     EH checking */
  if (ret_decl)
    *ret_decl = list;
  patch = patch_invoke (patch, list, args);
  if (is_super_init && CLASS_HAS_FINIT_P (current_class))
    {
      tree finit_parms, finit_call;
      
      /* Prepare to pass hidden parameters to $finit$, if any. */
      finit_parms = build_alias_initializer_parameter_list 
	(AIPL_FUNCTION_FINIT_INVOCATION, current_class, NULL_TREE, NULL);

      finit_call = 
	build_method_invocation (build_wfl_node (finit_identifier_node),
				 finit_parms);

      /* Generate the code used to initialize fields declared with an
	 initialization statement and build a compound statement along
	 with the super constructor invocation. */
      patch = build (COMPOUND_EXPR, void_type_node, patch,
		     java_complete_tree (finit_call));
      CAN_COMPLETE_NORMALLY (patch) = 1;
    }
  return patch;
}

/* Check that we're not trying to do a static reference to a method in
   non static method. Return 1 if it's the case, 0 otherwise. */

static int
check_for_static_method_reference (wfl, node, method, where, primary)
     tree wfl, node, method, where, primary;
{
  if (METHOD_STATIC (current_function_decl) 
      && !METHOD_STATIC (method) && !primary && !CALL_CONSTRUCTOR_P (node))
    {
      char *fct_name = xstrdup (lang_printable_name (method, 0));
      parse_error_context 
	(wfl, "Can't make static reference to method `%s %s' in class `%s'", 
	 lang_printable_name (TREE_TYPE (TREE_TYPE (method)), 0), fct_name,
	 IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (where))));
      free (fct_name);
      return 1;
    }
  return 0;
}

/* Fix the invocation of *MDECL if necessary in the case of a
   invocation from an inner class. *THIS_ARG might be modified
   appropriately and an alternative access to *MDECL might be
   returned.  */

static int
maybe_use_access_method (is_super_init, mdecl, this_arg)
     int is_super_init;
     tree *mdecl, *this_arg;
{
  tree ctx;
  tree md = *mdecl, ta = *this_arg;
  int to_return = 0;
  int non_static_context = !METHOD_STATIC (md);

  if (is_super_init 
      || DECL_CONTEXT (md) == current_class
      || !PURE_INNER_CLASS_TYPE_P (current_class) 
      || DECL_FINIT_P (md))
    return 0;
  
  /* If we're calling a method found in an enclosing class, generate
     what it takes to retrieve the right this. Don't do that if we're
     invoking a static method. */

  if (non_static_context)
    {
      ctx = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (current_class)));
      if (ctx == DECL_CONTEXT (md))
	{
	  ta = build_current_thisn (current_class);
	  ta = build_wfl_node (ta);
	}
      else
	{
	  tree type = ctx;
	  while (type)
	    {
	      maybe_build_thisn_access_method (type);
	      if (type == DECL_CONTEXT (md))
		{
		  ta = build_access_to_thisn (ctx, type, 0);
		  break;
		}
	      type = (DECL_CONTEXT (TYPE_NAME (type)) ? 
		      TREE_TYPE (DECL_CONTEXT (TYPE_NAME (type))) : NULL_TREE);
	    }
	}
      ta = java_complete_tree (ta);
    }

  /* We might have to use an access method to get to MD. We can
     break the method access rule as far as we're not generating
     bytecode */
  if (METHOD_PRIVATE (md) && flag_emit_class_files)
    {
      md = build_outer_method_access_method (md);
      to_return = 1;
    }

  *mdecl = md;
  *this_arg = ta;

  /* Returnin a non zero value indicates we were doing a non static
     method invokation that is now a static invocation. It will have
     callee displace `this' to insert it in the regular argument
     list. */
  return (non_static_context && to_return);
}

/* Patch an invoke expression METHOD and ARGS, based on its invocation
   mode.  */

static tree
patch_invoke (patch, method, args)
     tree patch, method, args;
{
  tree dtable, func;
  tree original_call, t, ta;
  tree cond = NULL_TREE;

  /* Last step for args: convert build-in types. If we're dealing with
     a new TYPE() type call, the first argument to the constructor
     isn't found in the incoming argument list, but delivered by
     `new' */
  t = TYPE_ARG_TYPES (TREE_TYPE (method));
  if (TREE_CODE (patch) == NEW_CLASS_EXPR)
    t = TREE_CHAIN (t);
  for (ta = args; t != end_params_node && ta; 
       t = TREE_CHAIN (t), ta = TREE_CHAIN (ta))
    if (JPRIMITIVE_TYPE_P (TREE_TYPE (TREE_VALUE (ta))) &&
	TREE_TYPE (TREE_VALUE (ta)) != TREE_VALUE (t))
      TREE_VALUE (ta) = convert (TREE_VALUE (t), TREE_VALUE (ta));

  /* Resolve unresolved returned type isses */
  t = TREE_TYPE (TREE_TYPE (method));
  if (TREE_CODE (t) == POINTER_TYPE && !CLASS_LOADED_P (TREE_TYPE (t)))
    resolve_and_layout (TREE_TYPE (t), NULL);

  if (flag_emit_class_files || flag_emit_xref)
    func = method;
  else
    {
      tree signature = build_java_signature (TREE_TYPE (method));
      switch (invocation_mode (method, CALL_USING_SUPER (patch)))
	{
	case INVOKE_VIRTUAL:
	  dtable = invoke_build_dtable (0, args);
	  func = build_invokevirtual (dtable, method);
	  break;

	case INVOKE_NONVIRTUAL:
	  /* If the object for the method call is null, we throw an
	     exception.  We don't do this if the object is the current
	     method's `this'.  In other cases we just rely on an
	     optimization pass to eliminate redundant checks.  */
	  if (TREE_VALUE (args) != current_this)
	    {
	      /* We use a SAVE_EXPR here to make sure we only evaluate
		 the new `self' expression once.  */
	      tree save_arg = save_expr (TREE_VALUE (args));
	      TREE_VALUE (args) = save_arg;
	      cond = build (EQ_EXPR, boolean_type_node, save_arg,
			    null_pointer_node);
	    }
	  /* Fall through.  */

	case INVOKE_SUPER:
	case INVOKE_STATIC:
	  func = build_known_method_ref (method, TREE_TYPE (method),
					 DECL_CONTEXT (method),
					 signature, args);
	  break;

	case INVOKE_INTERFACE:
	  dtable = invoke_build_dtable (1, args);
	  func = build_invokeinterface (dtable, method);
	  break;

	default:
	  fatal ("internal error - unknown invocation_mode result");
	}

      /* Ensure self_type is initialized, (invokestatic). FIXME */
      func = build1 (NOP_EXPR, build_pointer_type (TREE_TYPE (method)), func);
    }

  TREE_TYPE (patch) = TREE_TYPE (TREE_TYPE (method));
  TREE_OPERAND (patch, 0) = func;
  TREE_OPERAND (patch, 1) = args;
  original_call = patch;

  /* We're processing a `new TYPE ()' form. New is called and its
     returned value is the first argument to the constructor. We build
     a COMPOUND_EXPR and use saved expression so that the overall NEW
     expression value is a pointer to a newly created and initialized
     class. */
  if (TREE_CODE (original_call) == NEW_CLASS_EXPR)
    {
      tree class = DECL_CONTEXT (method);
      tree c1, saved_new, size, new;
      if (flag_emit_class_files || flag_emit_xref)
	{
	  TREE_TYPE (patch) = build_pointer_type (class);
	  return patch;
	}
      if (!TYPE_SIZE (class))
	safe_layout_class (class);
      size = size_in_bytes (class);
      new = build (CALL_EXPR, promote_type (class),
		   build_address_of (alloc_object_node),
		   tree_cons (NULL_TREE, build_class_ref (class),
			      build_tree_list (NULL_TREE, 
					       size_in_bytes (class))),
		   NULL_TREE);
      saved_new = save_expr (new);
      c1 = build_tree_list (NULL_TREE, saved_new);
      TREE_CHAIN (c1) = TREE_OPERAND (original_call, 1);
      TREE_OPERAND (original_call, 1) = c1;
      TREE_SET_CODE (original_call, CALL_EXPR);
      patch = build (COMPOUND_EXPR, TREE_TYPE (new), patch, saved_new);
    }

  /* If COND is set, then we are building a check to see if the object
     is NULL.  */
  if (cond != NULL_TREE)
    {
      /* We have to make the `then' branch a compound expression to
	 make the types turn out right.  This seems bizarre.  */
      patch = build (COND_EXPR, TREE_TYPE (patch), cond,
		     build (COMPOUND_EXPR, TREE_TYPE (patch),
			    build (CALL_EXPR, void_type_node,
				   build_address_of (soft_nullpointer_node),
				   NULL_TREE, NULL_TREE),
			    (FLOAT_TYPE_P (TREE_TYPE (patch))
			     ? build_real (TREE_TYPE (patch), dconst0)
			     : build1 (CONVERT_EXPR, TREE_TYPE (patch),
				       integer_zero_node))),
		     patch);
      TREE_SIDE_EFFECTS (patch) = 1;
    }

  return patch;
}

static int
invocation_mode (method, super)
     tree method;
     int super;
{
  int access = get_access_flags_from_decl (method);

  if (super)
    return INVOKE_SUPER;

  if (access & ACC_STATIC)
    return INVOKE_STATIC;

  /* We have to look for a constructor before we handle nonvirtual
     calls; otherwise the constructor will look nonvirtual.  */
  if (DECL_CONSTRUCTOR_P (method))
    return INVOKE_STATIC;

  if (access & ACC_FINAL || access & ACC_PRIVATE)
    return INVOKE_NONVIRTUAL;

  if (CLASS_FINAL (TYPE_NAME (DECL_CONTEXT (method))))
    return INVOKE_NONVIRTUAL;

  if (CLASS_INTERFACE (TYPE_NAME (DECL_CONTEXT (method))))
    return INVOKE_INTERFACE;

  return INVOKE_VIRTUAL;
}

/* Retrieve a refined list of matching methods. It covers the step
   15.11.2 (Compile-Time Step 2) */

static tree
lookup_method_invoke (lc, cl, class, name, arg_list)
     int lc;
     tree cl;
     tree class, name, arg_list;
{
  tree atl = end_params_node;		/* Arg Type List */
  tree method, signature, list, node;
  const char *candidates;		/* Used for error report */
  char *dup;

  /* Fix the arguments */
  for (node = arg_list; node; node = TREE_CHAIN (node))
    {
      tree current_arg = TREE_TYPE (TREE_VALUE (node));
      /* Non primitive type may have to be resolved */
      if (!JPRIMITIVE_TYPE_P (current_arg))
	resolve_and_layout (current_arg, NULL_TREE);
      /* And promoted */
      if (TREE_CODE (current_arg) == RECORD_TYPE)
        current_arg = promote_type (current_arg);
      atl = tree_cons (NULL_TREE, current_arg, atl);
    }

  /* Presto. If we're dealing with an anonymous class and a
     constructor call, generate the right constructor now, since we
     know the arguments' types. */

  if (lc && ANONYMOUS_CLASS_P (class))
    craft_constructor (TYPE_NAME (class), atl);

  /* Find all candidates and then refine the list, searching for the
     most specific method. */
  list = find_applicable_accessible_methods_list (lc, class, name, atl);
  list = find_most_specific_methods_list (list);
  if (list && !TREE_CHAIN (list))
    return TREE_VALUE (list);

  /* Issue an error. List candidates if any. Candidates are listed
     only if accessible (non accessible methods may end-up here for
     the sake of a better error report). */
  candidates = NULL;
  if (list)
    {
      tree current;
      obstack_grow (&temporary_obstack, ". Candidates are:\n", 18);
      for (current = list; current; current = TREE_CHAIN (current))
	{
	  tree cm = TREE_VALUE (current);
	  char string [4096];
	  if (!cm || not_accessible_p (class, cm, 0))
	    continue;
	  sprintf 
	    (string, "  `%s' in `%s'%s",
	     get_printable_method_name (cm),
	     IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (DECL_CONTEXT (cm)))),
	     (TREE_CHAIN (current) ? "\n" : ""));
	  obstack_grow (&temporary_obstack, string, strlen (string));
	}
      obstack_1grow (&temporary_obstack, '\0');
      candidates = obstack_finish (&temporary_obstack);
    }
  /* Issue the error message */
  method = make_node (FUNCTION_TYPE);
  TYPE_ARG_TYPES (method) = atl;
  signature = build_java_argument_signature (method);
  dup = xstrdup (lang_printable_name (class, 0));
  parse_error_context (cl, "Can't find %s `%s(%s)' in type `%s'%s",
		       (lc ? "constructor" : "method"),
		       (lc ? dup : IDENTIFIER_POINTER (name)),
		       IDENTIFIER_POINTER (signature), dup,
		       (candidates ? candidates : ""));
  free (dup);
  return NULL_TREE;
}

/* 15.11.2.1: Find Methods that are Applicable and Accessible. LC is 1
   when we're looking for a constructor. */

static tree
find_applicable_accessible_methods_list (lc, class, name, arglist)
     int lc;
     tree class, name, arglist;
{
  static int object_done = 0;
  tree list = NULL_TREE, all_list = NULL_TREE;

  if (!CLASS_LOADED_P (class) && !CLASS_FROM_SOURCE_P (class))
    {
      load_class (class, 1);
      safe_layout_class (class);
    }

  /* Search interfaces */
  if (CLASS_INTERFACE (TYPE_NAME (class)))
    {
      static struct hash_table t, *searched_interfaces = NULL;
      static int search_not_done = 0;
      int i, n;
      tree basetype_vec = TYPE_BINFO_BASETYPES (class);

      /* Search in the hash table, otherwise create a new one if
         necessary and insert the new entry. */

      if (searched_interfaces)
	{
	  if (hash_lookup (searched_interfaces, 
			   (const hash_table_key) class, FALSE, NULL))
	    return NULL;
	}
      else
	{
	  hash_table_init (&t, hash_newfunc, java_hash_hash_tree_node,
			   java_hash_compare_tree_node);
	  searched_interfaces = &t;
	}

      hash_lookup (searched_interfaces, 
		   (const hash_table_key) class, TRUE, NULL);

      search_applicable_methods_list (lc, TYPE_METHODS (class), 
				      name, arglist, &list, &all_list);
      n = TREE_VEC_LENGTH (basetype_vec);
      for (i = 1; i < n; i++)
	{
	  tree t = BINFO_TYPE (TREE_VEC_ELT (basetype_vec, i));
	  tree rlist;

	  search_not_done++;
	  rlist = find_applicable_accessible_methods_list (lc,  t, name, 
							   arglist);
	  list = chainon (rlist, list);
	  search_not_done--;
	}

      /* We're done. Reset the searched interfaces list and finally search
         java.lang.Object */
      if (!search_not_done)
	{  
	  if (!object_done)
	    search_applicable_methods_list (lc, 
					    TYPE_METHODS (object_type_node),
					    name, arglist, &list, &all_list);
	  hash_table_free (searched_interfaces);
	  searched_interfaces = NULL;  
	}
    }
  /* Search classes */
  else
    {
      tree sc = class;
      int seen_inner_class = 0;
      search_applicable_methods_list (lc, TYPE_METHODS (class), 
				      name, arglist, &list, &all_list);

      /* We must search all interfaces of this class */
      if (!lc)
      {
	tree basetype_vec = TYPE_BINFO_BASETYPES (sc);
	int n = TREE_VEC_LENGTH (basetype_vec), i;
	object_done = 1;
	for (i = 1; i < n; i++)
	  {
	    tree t = BINFO_TYPE (TREE_VEC_ELT (basetype_vec, i));
	    tree rlist;
	    if (t != object_type_node)
	      rlist = find_applicable_accessible_methods_list (lc, t,
							       name, arglist);
	    list = chainon (rlist, list);
	  }
	object_done = 0;
      }

      /* Search enclosing context of inner classes before looking
         ancestors up. */
      while (!lc && INNER_CLASS_TYPE_P (class))
	{
	  tree rlist;
	  seen_inner_class = 1;
	  class = TREE_TYPE (DECL_CONTEXT (TYPE_NAME (class)));
	  rlist = find_applicable_accessible_methods_list (lc, class, 
							   name, arglist);
	  list = chainon (rlist, list);
	}

      if (!lc && seen_inner_class 
	  && TREE_TYPE (DECL_CONTEXT (TYPE_NAME (sc))) == CLASSTYPE_SUPER (sc))
	class = CLASSTYPE_SUPER (sc);
      else
	class = sc;

      for (class = (lc ? NULL_TREE : CLASSTYPE_SUPER (class)); 
        class; class = CLASSTYPE_SUPER (class))
       search_applicable_methods_list (lc, TYPE_METHODS (class), 
                                       name, arglist, &list, &all_list);
    }

  /* Either return the list obtained or all selected (but
     inaccessible) methods for better error report. */
  return (!list ? all_list : list);
}

/* Effectively search for the approriate method in method */

static void 
search_applicable_methods_list (lc, method, name, arglist, list, all_list)
     int lc;
     tree method, name, arglist;
     tree *list, *all_list;
{
  for (; method; method = TREE_CHAIN (method))
    {
      /* When dealing with constructor, stop here, otherwise search
         other classes */
      if (lc && !DECL_CONSTRUCTOR_P (method))
	continue;
      else if (!lc && (DECL_CONSTRUCTOR_P (method) 
		       || (GET_METHOD_NAME (method) != name)))
	continue;
	  
      if (argument_types_convertible (method, arglist))
	{
	  /* Retain accessible methods only */
	  if (!not_accessible_p (DECL_CONTEXT (current_function_decl), 
				 method, 0))
	    *list = tree_cons (NULL_TREE, method, *list);
	  else
	    /* Also retain all selected method here */
	    *all_list = tree_cons (NULL_TREE, method, *list);
	}
    }
}    

/* 15.11.2.2 Choose the Most Specific Method */

static tree
find_most_specific_methods_list (list)
     tree list;
{
  int max = 0;
  tree current, new_list = NULL_TREE;
  for (current = list; current; current = TREE_CHAIN (current))
    {
      tree method;
      DECL_SPECIFIC_COUNT (TREE_VALUE (current)) = 0;

      for (method = list; method; method = TREE_CHAIN (method))
	{
	  /* Don't test a method against itself */
	  if (method == current)
	    continue;

	  /* Compare arguments and location where method where declared */
	  if (argument_types_convertible (TREE_VALUE (method), 
					  TREE_VALUE (current))
	      && valid_method_invocation_conversion_p 
	           (DECL_CONTEXT (TREE_VALUE (method)), 
		    DECL_CONTEXT (TREE_VALUE (current))))
	    {
	      int v = ++DECL_SPECIFIC_COUNT (TREE_VALUE (current));
	      max = (v > max ? v : max);
	    }
	}
    }

  /* Review the list and select the maximally specific methods */
  for (current = list; current; current = TREE_CHAIN (current))
    if (DECL_SPECIFIC_COUNT (TREE_VALUE (current)) == max)
      new_list = tree_cons (NULL_TREE, TREE_VALUE (current), new_list);

  /* If we have several and they're all abstract, just pick the
     closest one. */

  if (new_list && TREE_CHAIN (new_list))
    {
      tree c;
      for (c = new_list; c && METHOD_ABSTRACT (TREE_VALUE (c)); 
	   c = TREE_CHAIN (c))
        ;
      if (!c)
	{
	  new_list = nreverse (new_list);
	  TREE_CHAIN (new_list) = NULL_TREE;
	}
    }

  /* If we can't find one, lower expectations and try to gather multiple
     maximally specific methods */
  while (!new_list && max)
    {
      while (--max > 0)
	{
	  if (DECL_SPECIFIC_COUNT (TREE_VALUE (current)) == max)
	    new_list = tree_cons (NULL_TREE, TREE_VALUE (current), new_list);
	}
    }

  return new_list;
}

/* Make sure that the type of each M2_OR_ARGLIST arguments can be
   converted by method invocation conversion (5.3) to the type of the
   corresponding parameter of M1. Implementation expects M2_OR_ARGLIST
   to change less often than M1. */

static int
argument_types_convertible (m1, m2_or_arglist)
    tree m1, m2_or_arglist;
{
  static tree m2_arg_value = NULL_TREE;
  static tree m2_arg_cache = NULL_TREE;

  register tree m1_arg, m2_arg;

  SKIP_THIS_AND_ARTIFICIAL_PARMS (m1_arg, m1)

  if (m2_arg_value == m2_or_arglist)
    m2_arg = m2_arg_cache;
  else
    {
      /* M2_OR_ARGLIST can be a function DECL or a raw list of
         argument types */
      if (m2_or_arglist && TREE_CODE (m2_or_arglist) == FUNCTION_DECL)
	{
	  m2_arg = TYPE_ARG_TYPES (TREE_TYPE (m2_or_arglist));
	  if (!METHOD_STATIC (m2_or_arglist))
	    m2_arg = TREE_CHAIN (m2_arg);
	}
      else
	m2_arg = m2_or_arglist;

      m2_arg_value = m2_or_arglist;
      m2_arg_cache = m2_arg;
    }

  while (m1_arg != end_params_node && m2_arg != end_params_node)
    {
      resolve_and_layout (TREE_VALUE (m1_arg), NULL_TREE);
      if (!valid_method_invocation_conversion_p (TREE_VALUE (m1_arg),
						 TREE_VALUE (m2_arg)))
	break;
      m1_arg = TREE_CHAIN (m1_arg);
      m2_arg = TREE_CHAIN (m2_arg);
    }
  return m1_arg == end_params_node && m2_arg == end_params_node;
}

/* Qualification routines */

static void
qualify_ambiguous_name (id)
     tree id;
{
  tree qual, qual_wfl, name = NULL_TREE, decl, ptr_type = NULL_TREE,
    saved_current_class;
  int again, super_found = 0, this_found = 0, new_array_found = 0;
  int code;

  /* We first qualify the first element, then derive qualification of
     others based on the first one. If the first element is qualified
     by a resolution (field or type), this resolution is stored in the
     QUAL_RESOLUTION of the qual element being examined. We need to
     save the current_class since the use of SUPER might change the
     its value. */
  saved_current_class = current_class;
  qual = EXPR_WFL_QUALIFICATION (id);
  do {

    /* Simple qualified expression feature a qual_wfl that is a
       WFL. Expression derived from a primary feature more complicated
       things like a CALL_EXPR. Expression from primary need to be
       worked out to extract the part on which the qualification will
       take place. */
    qual_wfl = QUAL_WFL (qual);
    switch (TREE_CODE (qual_wfl))
      {
      case CALL_EXPR:
	qual_wfl = TREE_OPERAND (qual_wfl, 0);
	if (TREE_CODE (qual_wfl) != EXPR_WITH_FILE_LOCATION)
	  {
	    qual = EXPR_WFL_QUALIFICATION (qual_wfl);
	    qual_wfl = QUAL_WFL (qual);
	  }
	break;
      case NEW_ARRAY_EXPR:
      case NEW_ANONYMOUS_ARRAY_EXPR:
	qual = TREE_CHAIN (qual);
	again = new_array_found = 1;
	continue;
      case CONVERT_EXPR:
	break;
      case NEW_CLASS_EXPR:
	qual_wfl = TREE_OPERAND (qual_wfl, 0);
	break;
      case ARRAY_REF:
	while (TREE_CODE (qual_wfl) == ARRAY_REF)
	  qual_wfl = TREE_OPERAND (qual_wfl, 0);
	break;
      case STRING_CST:
	qual = TREE_CHAIN (qual);
	qual_wfl = QUAL_WFL (qual);
	break;
      case CLASS_LITERAL:
	qual = TREE_CHAIN (qual);
	qual_wfl = QUAL_WFL (qual);
      break;
      default:
	/* Fix for -Wall. Just break doing nothing */
	break;
      }

    ptr_type = current_class;
    again = 0;
    code = TREE_CODE (qual_wfl);

    /* Pos evaluation: non WFL leading expression nodes */
    if (code == CONVERT_EXPR
	&& TREE_CODE (TREE_TYPE (qual_wfl)) == EXPR_WITH_FILE_LOCATION)
      name = EXPR_WFL_NODE (TREE_TYPE (qual_wfl));

    else if (code == INTEGER_CST)
      name = qual_wfl;
    
    else if ((code == ARRAY_REF || code == CALL_EXPR || code == MODIFY_EXPR) &&
	     TREE_CODE (TREE_OPERAND (qual_wfl, 0)) == EXPR_WITH_FILE_LOCATION)
      name = EXPR_WFL_NODE (TREE_OPERAND (qual_wfl, 0));

    else if (code == TREE_LIST)
      name = EXPR_WFL_NODE (TREE_PURPOSE (qual_wfl));

    else if (code == STRING_CST || code == CONDITIONAL_EXPR 
	     || code == PLUS_EXPR)
      {
	qual = TREE_CHAIN (qual);
	qual_wfl = QUAL_WFL (qual);
	again = 1;
      }
    else 
      {
	name = EXPR_WFL_NODE (qual_wfl);
	if (!name)
	  {
	    qual = EXPR_WFL_QUALIFICATION (qual_wfl);
	    again = 1;
	  }
      }

    /* If we have a THIS (from a primary), we set the context accordingly */
    if (name == this_identifier_node)
      {
	qual = TREE_CHAIN (qual);
	qual_wfl = QUAL_WFL (qual);
	if (TREE_CODE (qual_wfl) == CALL_EXPR)
	  again = 1;
	else
	  name = EXPR_WFL_NODE (qual_wfl);
	this_found = 1;
      }
    /* If we have a SUPER, we set the context accordingly */
    if (name == super_identifier_node)
      {
	current_class = CLASSTYPE_SUPER (ptr_type);
	/* Check that there is such a thing as a super class. If not,
	   return.  The error will be caught later on, during the
	   resolution */
	if (!current_class)
	  {
	    current_class = saved_current_class;
	    return;
	  }
	qual = TREE_CHAIN (qual);
	/* Do one more interation to set things up */
	super_found = again = 1;
      }
  } while (again);
  
  /* If name appears within the scope of a local variable declaration
     or parameter declaration, then it is an expression name. We don't
     carry this test out if we're in the context of the use of SUPER
     or THIS */
  if (!this_found && !super_found 
      && TREE_CODE (name) != STRING_CST && TREE_CODE (name) != INTEGER_CST
      && (decl = IDENTIFIER_LOCAL_VALUE (name)))
    {
      RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1;
      QUAL_RESOLUTION (qual) = decl;
    }

  /* If within the class/interface NAME was found to be used there
     exists a (possibly inherited) field named NAME, then this is an
     expression name. If we saw a NEW_ARRAY_EXPR before and want to
     address length, it is OK. */
  else if ((decl = lookup_field_wrapper (ptr_type, name))
	   || (new_array_found && name == length_identifier_node))
    {
      RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1;
      QUAL_RESOLUTION (qual) = (new_array_found ? NULL_TREE : decl);
    }

  /* We reclassify NAME as yielding to a type name resolution if:
     - NAME is a class/interface declared within the compilation
       unit containing NAME,
     - NAME is imported via a single-type-import declaration,
     - NAME is declared in an another compilation unit of the package
       of the compilation unit containing NAME,
     - NAME is declared by exactly on type-import-on-demand declaration
     of the compilation unit containing NAME. 
     - NAME is actually a STRING_CST. */
  else if (TREE_CODE (name) == STRING_CST || TREE_CODE (name) == INTEGER_CST
	   || (decl = resolve_and_layout (name, NULL_TREE)))
    {
      RESOLVE_TYPE_NAME_P (qual_wfl) = 1;
      QUAL_RESOLUTION (qual) = decl;
    }

  /* Method call, array references and cast are expression name */
  else if (TREE_CODE (QUAL_WFL (qual)) == CALL_EXPR
	   || TREE_CODE (QUAL_WFL (qual)) == ARRAY_REF
	   || TREE_CODE (QUAL_WFL (qual)) == CONVERT_EXPR)
    RESOLVE_EXPRESSION_NAME_P (qual_wfl) = 1;

  /* Check here that NAME isn't declared by more than one
     type-import-on-demand declaration of the compilation unit
     containing NAME. FIXME */

  /* Otherwise, NAME is reclassified as a package name */
  else 
    RESOLVE_PACKAGE_NAME_P (qual_wfl) = 1;

  /* Propagate the qualification accross other components of the
     qualified name */
  for (qual = TREE_CHAIN (qual); qual;
       qual_wfl = QUAL_WFL (qual), qual = TREE_CHAIN (qual))
    {
      if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
	RESOLVE_PACKAGE_NAME_P (QUAL_WFL (qual)) = 1;
      else 
	RESOLVE_EXPRESSION_NAME_P (QUAL_WFL (qual)) = 1;
    }

  /* Store the global qualification for the ambiguous part of ID back
     into ID fields */
  if (RESOLVE_EXPRESSION_NAME_P (qual_wfl))
    RESOLVE_EXPRESSION_NAME_P (id) = 1;
  else if (RESOLVE_TYPE_NAME_P (qual_wfl))
    RESOLVE_TYPE_NAME_P (id) = 1;
  else if (RESOLVE_PACKAGE_NAME_P (qual_wfl))
    RESOLVE_PACKAGE_NAME_P (id) = 1;

  /* Restore the current class */
  current_class = saved_current_class;
}

static int
breakdown_qualified (left, right, source)
    tree *left, *right, source;
{
  char *p = IDENTIFIER_POINTER (source), *base;
  int   l = IDENTIFIER_LENGTH (source);

  /* Breakdown NAME into REMAINDER . IDENTIFIER */
  base = p;
  p += (l-1);
  while (*p != '.' && p != base)
    p--;

  /* We didn't find a '.'. Return an error */
  if (p == base)
    return 1;

  *p = '\0';
  if (right)
    *right = get_identifier (p+1);
  *left = get_identifier (IDENTIFIER_POINTER (source));
  *p = '.';
  
  return 0;
}

/* Patch tree nodes in a function body. When a BLOCK is found, push
   local variable decls if present.
   Same as java_complete_lhs, but does resolve static finals to values. */

static tree
java_complete_tree (node)
     tree node;
{
  node = java_complete_lhs (node);
  if (TREE_CODE (node) == VAR_DECL && FIELD_STATIC (node)
      && FIELD_FINAL (node) && DECL_INITIAL (node) != NULL_TREE
      && !flag_emit_xref)
    {
      tree value = DECL_INITIAL (node);
      DECL_INITIAL (node) = NULL_TREE;
      push_obstacks (&permanent_obstack, &permanent_obstack);
      value = fold_constant_for_init (value, node);
      pop_obstacks ();
      DECL_INITIAL (node) = value;
      if (value != NULL_TREE)
	{
	  /* fold_constant_for_init sometimes widen the original type
             of the constant (i.e. byte to int.) It's not desirable,
             especially if NODE is a function argument. */
	  if (TREE_CODE (value) == INTEGER_CST
	      && TREE_TYPE (node) != TREE_TYPE (value))
	    return convert (TREE_TYPE (node), value);
	  else
	    return value;
	}
    }
  return node;
}

static tree
java_stabilize_reference (node)
     tree node;
{
  if (TREE_CODE (node) == COMPOUND_EXPR)
    {
      tree op0 = TREE_OPERAND (node, 0);
      tree op1 = TREE_OPERAND (node, 1);
      TREE_OPERAND (node, 0) = save_expr (op0);
      TREE_OPERAND (node, 1) = java_stabilize_reference (op1);
      return node;
    }
  return stabilize_reference (node);
}

/* Patch tree nodes in a function body. When a BLOCK is found, push
   local variable decls if present.
   Same as java_complete_tree, but does not resolve static finals to values. */

static tree
java_complete_lhs (node)
     tree node;
{
  tree nn, cn, wfl_op1, wfl_op2, wfl_op3;
  int flag;

  /* CONVERT_EXPR always has its type set, even though it needs to be
     worked out. */
  if (TREE_TYPE (node) && TREE_CODE (node) != CONVERT_EXPR)
    return node;

  /* The switch block implements cases processing container nodes
     first.  Contained nodes are always written back. Leaves come
     next and return a value. */
  switch (TREE_CODE (node))
    {
    case BLOCK:

      /* 1- Block section.
	 Set the local values on decl names so we can identify them
	 faster when they're referenced. At that stage, identifiers
	 are legal so we don't check for declaration errors. */
      for (cn = BLOCK_EXPR_DECLS (node); cn; cn = TREE_CHAIN (cn))
	{
	  DECL_CONTEXT (cn) = current_function_decl;
	  IDENTIFIER_LOCAL_VALUE (DECL_NAME (cn)) = cn;
	}
      if (BLOCK_EXPR_BODY (node) == NULL_TREE)
	  CAN_COMPLETE_NORMALLY (node) = 1;
      else
	{
	  tree stmt = BLOCK_EXPR_BODY (node);
	  tree *ptr;
	  int error_seen = 0;
	  if (TREE_CODE (stmt) == COMPOUND_EXPR)
	    {
	      /* Re-order from (((A; B); C); ...; Z) to 
		 (A; (B; (C ; (...; Z)))).
		 This makes it easier to scan the statements left-to-right
		 without using recursion (which might overflow the stack
		 if the block has many statements. */
	      for (;;)
		{
		  tree left = TREE_OPERAND (stmt, 0);
		  if (TREE_CODE (left) != COMPOUND_EXPR)
		    break;
		  TREE_OPERAND (stmt, 0) = TREE_OPERAND (left, 1);
		  TREE_OPERAND (left, 1) = stmt;
		  stmt = left;
		}
	      BLOCK_EXPR_BODY (node) = stmt;
	    }

	  /* Now do the actual complete, without deep recursion for
             long blocks. */
	  ptr = &BLOCK_EXPR_BODY (node);
	  while (TREE_CODE (*ptr) == COMPOUND_EXPR
		 && TREE_OPERAND (*ptr, 1) != empty_stmt_node)
	    {
	      tree cur = java_complete_tree (TREE_OPERAND (*ptr, 0));
	      tree *next = &TREE_OPERAND (*ptr, 1);
	      TREE_OPERAND (*ptr, 0) = cur;
	      if (cur == empty_stmt_node)
		{
		  /* Optimization;  makes it easier to detect empty bodies.
		     Most useful for <clinit> with all-constant initializer. */
		  *ptr = *next;
		  continue;
		}
	      if (TREE_CODE (cur) == ERROR_MARK)
		error_seen++;
	      else if (! CAN_COMPLETE_NORMALLY (cur))
		{
		  wfl_op2 = *next;
		  for (;;)
		    {
		      if (TREE_CODE (wfl_op2) == BLOCK)
			wfl_op2 = BLOCK_EXPR_BODY (wfl_op2);
		      else if (TREE_CODE (wfl_op2) == COMPOUND_EXPR)
			wfl_op2 = TREE_OPERAND (wfl_op2, 0);
		      else
			break;
		    }
		  if (TREE_CODE (wfl_op2) != CASE_EXPR
		      && TREE_CODE (wfl_op2) != DEFAULT_EXPR)
		    unreachable_stmt_error (*ptr);
		}
	      ptr = next;
	    }
	  *ptr = java_complete_tree (*ptr);

	  if (TREE_CODE (*ptr) == ERROR_MARK || error_seen > 0)
	    return error_mark_node;
	  CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (*ptr);
	}
      /* Turn local bindings to null */
      for (cn = BLOCK_EXPR_DECLS (node); cn; cn = TREE_CHAIN (cn))
	IDENTIFIER_LOCAL_VALUE (DECL_NAME (cn)) = NULL_TREE;

      TREE_TYPE (node) = void_type_node;
      break;

      /* 2- They are expressions but ultimately deal with statements */

    case THROW_EXPR:
      wfl_op1 = TREE_OPERAND (node, 0);
      COMPLETE_CHECK_OP_0 (node);
      /* 14.19 A throw statement cannot complete normally. */
      CAN_COMPLETE_NORMALLY (node) = 0;
      return patch_throw_statement (node, wfl_op1);

    case SYNCHRONIZED_EXPR:
      wfl_op1 = TREE_OPERAND (node, 0);
      return patch_synchronized_statement (node, wfl_op1);

    case TRY_EXPR:
      return patch_try_statement (node);

    case TRY_FINALLY_EXPR:
      COMPLETE_CHECK_OP_0 (node);
      COMPLETE_CHECK_OP_1 (node);
      CAN_COMPLETE_NORMALLY (node)
	= (CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0))
	   && CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)));
      TREE_TYPE (node) = TREE_TYPE (TREE_OPERAND (node, 0));
      return node;

    case CLEANUP_POINT_EXPR:
      COMPLETE_CHECK_OP_0 (node);
      TREE_TYPE (node) = void_type_node;
      CAN_COMPLETE_NORMALLY (node) = 
	CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0));
      return node;

    case WITH_CLEANUP_EXPR:
      COMPLETE_CHECK_OP_0 (node);
      COMPLETE_CHECK_OP_2 (node);
      CAN_COMPLETE_NORMALLY (node) = 
	CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 0));
      TREE_TYPE (node) = void_type_node;
      return node;

    case LABELED_BLOCK_EXPR:
      PUSH_LABELED_BLOCK (node);
      if (LABELED_BLOCK_BODY (node))
	COMPLETE_CHECK_OP_1 (node);
      TREE_TYPE (node) = void_type_node;
      POP_LABELED_BLOCK ();

      if (LABELED_BLOCK_BODY (node) == empty_stmt_node)
	{
	  LABELED_BLOCK_BODY (node) = NULL_TREE;
	  CAN_COMPLETE_NORMALLY (node) = 1;
	}
      else if (CAN_COMPLETE_NORMALLY (LABELED_BLOCK_BODY (node)))
	CAN_COMPLETE_NORMALLY (node) = 1;
      return node;

    case EXIT_BLOCK_EXPR:
      /* We don't complete operand 1, because it's the return value of
         the EXIT_BLOCK_EXPR which doesn't exist it Java */
      return patch_bc_statement (node);

    case CASE_EXPR:
      cn = java_complete_tree (TREE_OPERAND (node, 0));
      if (cn == error_mark_node)
	return cn;

      /* First, the case expression must be constant. Values of final
         fields are accepted. */
      cn = fold (cn);
      if ((TREE_CODE (cn) == COMPOUND_EXPR || TREE_CODE (cn) == COMPONENT_REF)
	  && JDECL_P (TREE_OPERAND (cn, 1))
	  && FIELD_FINAL (TREE_OPERAND (cn, 1))
	  && DECL_INITIAL (TREE_OPERAND (cn, 1)))
	{
	  push_obstacks (&permanent_obstack, &permanent_obstack);
	  cn = fold_constant_for_init (DECL_INITIAL (TREE_OPERAND (cn, 1)),
				       TREE_OPERAND (cn, 1));
	  pop_obstacks ();
	}

      if (!TREE_CONSTANT (cn) && !flag_emit_xref)
	{
	  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
	  parse_error_context (node, "Constant expression required");
	  return error_mark_node;
	}

      nn = ctxp->current_loop;

      /* It must be assignable to the type of the switch expression. */
      if (!try_builtin_assignconv (NULL_TREE, 
				   TREE_TYPE (TREE_OPERAND (nn, 0)), cn))
	{
	  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
	  parse_error_context 
	    (wfl_operator,
	     "Incompatible type for case. Can't convert `%s' to `int'",
	     lang_printable_name (TREE_TYPE (cn), 0));
	  return error_mark_node;
	}

      cn = fold (convert (int_type_node, cn));

      /* Multiple instance of a case label bearing the same
	 value is checked during code generation. The case
	 expression is allright so far. */
      TREE_OPERAND (node, 0) = cn;
      TREE_TYPE (node) = void_type_node;
      CAN_COMPLETE_NORMALLY (node) = 1;
      TREE_SIDE_EFFECTS (node) = 1;
      break;

    case DEFAULT_EXPR:
      nn = ctxp->current_loop;
      /* Only one default label is allowed per switch statement */
      if (SWITCH_HAS_DEFAULT (nn))
	{
	  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
	  parse_error_context (wfl_operator, 
			       "Duplicate case label: `default'");
	  return error_mark_node;
	}
      else
	SWITCH_HAS_DEFAULT (nn) = 1;
      TREE_TYPE (node) = void_type_node;
      TREE_SIDE_EFFECTS (node) = 1;
      CAN_COMPLETE_NORMALLY (node) = 1;
      break;

    case SWITCH_EXPR:
    case LOOP_EXPR:
      PUSH_LOOP (node);
      /* Check whether the loop was enclosed in a labeled
         statement. If not, create one, insert the loop in it and
         return the node */
      nn = patch_loop_statement (node);

      /* Anyways, walk the body of the loop */
      if (TREE_CODE (node) == LOOP_EXPR)
	TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
      /* Switch statement: walk the switch expression and the cases */
      else
	node = patch_switch_statement (node);

      if (TREE_OPERAND (node, 0) == error_mark_node)
	nn = error_mark_node;
      else
	{
	  TREE_TYPE (nn) = TREE_TYPE (node) = void_type_node;
	  /* If we returned something different, that's because we
	     inserted a label. Pop the label too. */
	  if (nn != node)
	    {
	      if (CAN_COMPLETE_NORMALLY (node))
		CAN_COMPLETE_NORMALLY (nn) = 1;
	      POP_LABELED_BLOCK ();
	    }
	}
      POP_LOOP ();
      return nn;

    case EXIT_EXPR:
      TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
      return patch_exit_expr (node);

    case COND_EXPR:
      /* Condition */
      TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
      if (TREE_OPERAND (node, 0) == error_mark_node)
	return error_mark_node;
      /* then-else branches */
      TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));
      if (TREE_OPERAND (node, 1) == error_mark_node)
	return error_mark_node;
      TREE_OPERAND (node, 2) = java_complete_tree (TREE_OPERAND (node, 2));
      if (TREE_OPERAND (node, 2) == error_mark_node)
	return error_mark_node;
      return patch_if_else_statement (node);
      break;

    case CONDITIONAL_EXPR:
      /* Condition */
      wfl_op1 = TREE_OPERAND (node, 0);
      COMPLETE_CHECK_OP_0 (node);
      wfl_op2 = TREE_OPERAND (node, 1);
      COMPLETE_CHECK_OP_1 (node);
      wfl_op3 = TREE_OPERAND (node, 2);
      COMPLETE_CHECK_OP_2 (node);
      return patch_conditional_expr (node, wfl_op1, wfl_op2);

      /* 3- Expression section */
    case COMPOUND_EXPR:
      wfl_op2 = TREE_OPERAND (node, 1);
      TREE_OPERAND (node, 0) = nn = 
	java_complete_tree (TREE_OPERAND (node, 0));
      if (wfl_op2 == empty_stmt_node)
	CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (nn);
      else
	{
	  if (! CAN_COMPLETE_NORMALLY (nn) && TREE_CODE (nn) != ERROR_MARK)
	    {
	      /* An unreachable condition in a do-while statement
		 is *not* (technically) an unreachable statement. */
	      nn = wfl_op2;
	      if (TREE_CODE (nn) == EXPR_WITH_FILE_LOCATION)
		nn = EXPR_WFL_NODE (nn);
	      if (TREE_CODE (nn) != EXIT_EXPR)
		{
		  SET_WFL_OPERATOR (wfl_operator, node, wfl_op2);
		  parse_error_context (wfl_operator, "Unreachable statement");
		}
	    }
	  TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));
	  if (TREE_OPERAND (node, 1) == error_mark_node)
	    return error_mark_node;
	  CAN_COMPLETE_NORMALLY (node)
	    = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1));
	}
      TREE_TYPE (node) = TREE_TYPE (TREE_OPERAND (node, 1));
      break;

    case RETURN_EXPR:
      /* CAN_COMPLETE_NORMALLY (node) = 0; */
      return patch_return (node);

    case EXPR_WITH_FILE_LOCATION:
      if (!EXPR_WFL_NODE (node) /* Or a PRIMARY flag ? */
	  || TREE_CODE (EXPR_WFL_NODE (node)) == IDENTIFIER_NODE)
	{
	  tree wfl = node;
	  node = resolve_expression_name (node, NULL);
	  if (node == error_mark_node)
	    return node;
	  /* Keep line number information somewhere were it doesn't
	     disrupt the completion process. */
	  if (flag_emit_xref && TREE_CODE (node) != CALL_EXPR)
	    {
	      EXPR_WFL_NODE (wfl) = TREE_OPERAND (node, 1);
	      TREE_OPERAND (node, 1) = wfl;
	    }
	  CAN_COMPLETE_NORMALLY (node) = 1;
	}
      else
	{
	  tree body;
	  int save_lineno = lineno;
	  lineno = EXPR_WFL_LINENO (node);
	  body = java_complete_tree (EXPR_WFL_NODE (node));
	  lineno = save_lineno;
	  EXPR_WFL_NODE (node) = body;
	  TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (body);
	  CAN_COMPLETE_NORMALLY (node) = CAN_COMPLETE_NORMALLY (body);
	  if (body == empty_stmt_node)
	    {
	      /* Optimization;  makes it easier to detect empty bodies. */
	      return body;
	    }
	  if (body == error_mark_node)
	    {
	      /* Its important for the evaluation of assignment that
		 this mark on the TREE_TYPE is propagated. */
	      TREE_TYPE (node) = error_mark_node;
	      return error_mark_node;
	    }
	  else
	    TREE_TYPE (node) = TREE_TYPE (EXPR_WFL_NODE (node));
	  
	}
      break;

    case NEW_ARRAY_EXPR:
      /* Patch all the dimensions */
      flag = 0;
      for (cn = TREE_OPERAND (node, 1); cn; cn = TREE_CHAIN (cn))
	{
	  int location = EXPR_WFL_LINECOL (TREE_VALUE (cn));
	  tree dim = convert (int_type_node, 
			      java_complete_tree (TREE_VALUE (cn)));
	  if (dim == error_mark_node)
	    {
	      flag = 1;
	      continue;
	    }
	  else
	    {
	      TREE_VALUE (cn) = dim;
	      /* Setup the location of the current dimension, for
		 later error report. */
	      TREE_PURPOSE (cn) = 
		build_expr_wfl (NULL_TREE, input_filename, 0, 0);
	      EXPR_WFL_LINECOL (TREE_PURPOSE (cn)) = location;
	    }
	}
      /* They complete the array creation expression, if no errors
         were found. */
      CAN_COMPLETE_NORMALLY (node) = 1;
      return (flag ? error_mark_node
	      : force_evaluation_order (patch_newarray (node)));

    case NEW_ANONYMOUS_ARRAY_EXPR:
      /* Create the array type if necessary. */
      if (ANONYMOUS_ARRAY_DIMS_SIG (node))
	{
	  tree type = ANONYMOUS_ARRAY_BASE_TYPE (node);
	  if (!(type = resolve_type_during_patch (type)))
	    return error_mark_node;
	  type = build_array_from_name (type, NULL_TREE,
					ANONYMOUS_ARRAY_DIMS_SIG (node), NULL);
	  ANONYMOUS_ARRAY_BASE_TYPE (node) = build_pointer_type (type);
	}
      node = patch_new_array_init (ANONYMOUS_ARRAY_BASE_TYPE (node),
				   ANONYMOUS_ARRAY_INITIALIZER (node));
      if (node == error_mark_node)
	return error_mark_node;
      CAN_COMPLETE_NORMALLY (node) = 1;
      return node;

    case NEW_CLASS_EXPR:
    case CALL_EXPR:
      /* Complete function's argument(s) first */
      if (complete_function_arguments (node))
	return error_mark_node;
      else
	{
	  tree decl, wfl = TREE_OPERAND (node, 0);
	  int in_this = CALL_THIS_CONSTRUCTOR_P (node);

	  node = patch_method_invocation (node, NULL_TREE, 
					  NULL_TREE, 0, &decl);
	  if (node == error_mark_node)
	    return error_mark_node;

	  check_thrown_exceptions (EXPR_WFL_LINECOL (node), decl);
	  /* If we call this(...), register signature and positions */
	  if (in_this)
	    DECL_CONSTRUCTOR_CALLS (current_function_decl) = 
	      tree_cons (wfl, decl, 
			 DECL_CONSTRUCTOR_CALLS (current_function_decl));
	  CAN_COMPLETE_NORMALLY (node) = 1;
	  return force_evaluation_order (node);
	}

    case MODIFY_EXPR:
      /* Save potential wfls */
      wfl_op1 = TREE_OPERAND (node, 0);
      TREE_OPERAND (node, 0) = nn = java_complete_lhs (wfl_op1);
      
      if (MODIFY_EXPR_FROM_INITIALIZATION_P (node)
	  && TREE_CODE (nn) == VAR_DECL && TREE_STATIC (nn)
	  && DECL_INITIAL (nn) != NULL_TREE)
	{
	  tree value;
	  
	  push_obstacks (&permanent_obstack, &permanent_obstack);
	  value = fold_constant_for_init (nn, nn);
	  pop_obstacks ();

	  if (value != NULL_TREE)
	    {
	      tree type = TREE_TYPE (value);
	      if (JPRIMITIVE_TYPE_P (type) || 
		  (type == string_ptr_type_node && ! flag_emit_class_files))
		return empty_stmt_node;
	    }
	  DECL_INITIAL (nn) = NULL_TREE;
	}
      wfl_op2 = TREE_OPERAND (node, 1);

      if (TREE_OPERAND (node, 0) == error_mark_node)
	return error_mark_node;

      flag = COMPOUND_ASSIGN_P (wfl_op2);
      if (flag)
	{
	  /* This might break when accessing outer field from inner
             class. TESTME, FIXME */
	  tree lvalue = java_stabilize_reference (TREE_OPERAND (node, 0)); 

	  /* Hand stablize the lhs on both places */
	  TREE_OPERAND (node, 0) = lvalue;
	  TREE_OPERAND (TREE_OPERAND (node, 1), 0) = 
	    (flag_emit_class_files ? lvalue : save_expr (lvalue));

	  /* 15.25.2.a: Left hand is not an array access. FIXME */
	  /* Now complete the RHS. We write it back later on. */
	  nn = java_complete_tree (TREE_OPERAND (node, 1));

	  if ((cn = patch_string (nn)))
	    nn = cn;

	  /* The last part of the rewrite for E1 op= E2 is to have 
	     E1 = (T)(E1 op E2), with T being the type of E1. */
	  nn = java_complete_tree (build_cast (EXPR_WFL_LINECOL (wfl_op2), 
					       TREE_TYPE (lvalue), nn));

	  /* 15.25.2.b: Left hand is an array access. FIXME */
	}

      /* If we're about to patch a NEW_ARRAY_INIT, we call a special
	 function to complete this RHS. Note that a NEW_ARRAY_INIT
	 might have been already fully expanded if created as a result
	 of processing an anonymous array initializer. We avoid doing
	 the operation twice by testing whether the node already bears
	 a type. */
      else if (TREE_CODE (wfl_op2) == NEW_ARRAY_INIT && !TREE_TYPE (wfl_op2))
	nn = patch_new_array_init (TREE_TYPE (TREE_OPERAND (node, 0)),
				   TREE_OPERAND (node, 1));
      /* Otherwise we simply complete the RHS */
      else
	nn = java_complete_tree (TREE_OPERAND (node, 1));

      if (nn == error_mark_node)
	return error_mark_node;

      /* Write back the RHS as we evaluated it. */
      TREE_OPERAND (node, 1) = nn;

      /* In case we're handling = with a String as a RHS, we need to
	 produce a String out of the RHS (it might still be a
	 STRING_CST or a StringBuffer at this stage */
      if ((nn = patch_string (TREE_OPERAND (node, 1))))
	TREE_OPERAND (node, 1) = nn;

      if ((nn = outer_field_access_fix (wfl_op1, TREE_OPERAND (node, 0),
					TREE_OPERAND (node, 1))))
	{
	  /* We return error_mark_node if outer_field_access_fix
	     detects we write into a final. */
	  if (nn == error_mark_node)
	    return error_mark_node;
	  node = nn;
	}
      else
	{
	  node = patch_assignment (node, wfl_op1, wfl_op2);
	  /* Reorganize the tree if necessary. */
	  if (flag && (!JREFERENCE_TYPE_P (TREE_TYPE (node)) 
		       || JSTRING_P (TREE_TYPE (node))))
	    node = java_refold (node);
	}
      
      CAN_COMPLETE_NORMALLY (node) = 1;
      return node;

    case MULT_EXPR:
    case PLUS_EXPR:
    case MINUS_EXPR:
    case LSHIFT_EXPR:
    case RSHIFT_EXPR:
    case URSHIFT_EXPR:
    case BIT_AND_EXPR:
    case BIT_XOR_EXPR:
    case BIT_IOR_EXPR:
    case TRUNC_MOD_EXPR:
    case TRUNC_DIV_EXPR:
    case RDIV_EXPR:
    case TRUTH_ANDIF_EXPR:
    case TRUTH_ORIF_EXPR:
    case EQ_EXPR: 
    case NE_EXPR:
    case GT_EXPR:
    case GE_EXPR:
    case LT_EXPR:
    case LE_EXPR:
      /* Operands 0 and 1 are WFL in certain cases only. patch_binop
	 knows how to handle those cases. */
      wfl_op1 = TREE_OPERAND (node, 0);
      wfl_op2 = TREE_OPERAND (node, 1);

      CAN_COMPLETE_NORMALLY (node) = 1;
      /* Don't complete string nodes if dealing with the PLUS operand. */
      if (TREE_CODE (node) != PLUS_EXPR || !JSTRING_P (wfl_op1))
        {
          nn = java_complete_tree (wfl_op1);
          if (nn == error_mark_node)
            return error_mark_node;

          TREE_OPERAND (node, 0) = nn;
        }
      if (TREE_CODE (node) != PLUS_EXPR || !JSTRING_P (wfl_op2))
        {
          nn = java_complete_tree (wfl_op2);
          if (nn == error_mark_node)
            return error_mark_node;

          TREE_OPERAND (node, 1) = nn;
        }
      return force_evaluation_order (patch_binop (node, wfl_op1, wfl_op2));

    case INSTANCEOF_EXPR:
      wfl_op1 = TREE_OPERAND (node, 0);
      COMPLETE_CHECK_OP_0 (node);
      if (flag_emit_xref)
	{
	  TREE_TYPE (node) = boolean_type_node;
	  return node;
	}
      return patch_binop (node, wfl_op1, TREE_OPERAND (node, 1));

    case UNARY_PLUS_EXPR:
    case NEGATE_EXPR:
    case TRUTH_NOT_EXPR:
    case BIT_NOT_EXPR:
    case PREDECREMENT_EXPR:
    case PREINCREMENT_EXPR:
    case POSTDECREMENT_EXPR:
    case POSTINCREMENT_EXPR:
    case CONVERT_EXPR:
      /* There are cases were wfl_op1 is a WFL. patch_unaryop knows
	 how to handle those cases. */
      wfl_op1 = TREE_OPERAND (node, 0);
      CAN_COMPLETE_NORMALLY (node) = 1;
      TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1);
      if (TREE_OPERAND (node, 0) == error_mark_node)
	return error_mark_node;
      node = patch_unaryop (node, wfl_op1);
      CAN_COMPLETE_NORMALLY (node) = 1;
      break;

    case ARRAY_REF:
      /* There are cases were wfl_op1 is a WFL. patch_array_ref knows
	 how to handle those cases. */
      wfl_op1 = TREE_OPERAND (node, 0);
      TREE_OPERAND (node, 0) = java_complete_tree (wfl_op1);
      if (TREE_OPERAND (node, 0) == error_mark_node)
	return error_mark_node;
      if (!flag_emit_class_files && !flag_emit_xref)
	TREE_OPERAND (node, 0) = save_expr (TREE_OPERAND (node, 0));
      /* The same applies to wfl_op2 */
      wfl_op2 = TREE_OPERAND (node, 1);
      TREE_OPERAND (node, 1) = java_complete_tree (wfl_op2);
      if (TREE_OPERAND (node, 1) == error_mark_node)
	return error_mark_node;
      if (!flag_emit_class_files && !flag_emit_xref)
	TREE_OPERAND (node, 1) = save_expr (TREE_OPERAND (node, 1));
      return patch_array_ref (node);

    case RECORD_TYPE:
      return node;;

    case COMPONENT_REF:
      /* The first step in the re-write of qualified name handling.  FIXME.
	 So far, this is only to support PRIMTYPE.class -> PRIMCLASS.TYPE. */
      TREE_OPERAND (node, 0) = java_complete_tree (TREE_OPERAND (node, 0));
      if (TREE_CODE (TREE_OPERAND (node, 0)) == RECORD_TYPE)
	{
	  tree name = TREE_OPERAND (node, 1);
	  tree field = lookup_field_wrapper (TREE_OPERAND (node, 0), name);
	  if (field == NULL_TREE)
	    {
	      error ("missing static field `%s'", IDENTIFIER_POINTER (name));
	      return error_mark_node;
	    }
	  if (! FIELD_STATIC (field))
	    {
	      error ("not a static field `%s'", IDENTIFIER_POINTER (name));
	      return error_mark_node;
	    }
	  return field;
	}
      else
	fatal ("unimplemented java_complete_tree for COMPONENT_REF");
      break;

    case THIS_EXPR:
      /* Can't use THIS in a static environment */
      if (!current_this)
	{
	  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
	  parse_error_context (wfl_operator,
			       "Keyword `this' used outside allowed context");
	  TREE_TYPE (node) = error_mark_node;
	  return error_mark_node;
	}
      if (ctxp->explicit_constructor_p)
	{
	  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
	  parse_error_context 
	    (wfl_operator, "Can't reference `this' or `super' before the superclass constructor has been called");
	  TREE_TYPE (node) = error_mark_node;
	  return error_mark_node;
	}
      return current_this;
      
    case CLASS_LITERAL:
      CAN_COMPLETE_NORMALLY (node) = 1;
      node = patch_incomplete_class_ref (node);
      if (node == error_mark_node)
	return error_mark_node;
      break;

    case INSTANCE_INITIALIZERS_EXPR:
      in_instance_initializer++;
      node = java_complete_tree (TREE_OPERAND (node, 0));
      in_instance_initializer--;
      if (node != error_mark_node)
	TREE_TYPE (node) = void_type_node;
      else
	return error_mark_node;
      break;

    default:
      CAN_COMPLETE_NORMALLY (node) = 1;
      /* Ok: may be we have a STRING_CST or a crafted `StringBuffer'
	 and it's time to turn it into the appropriate String object */
      if ((nn = patch_string (node)))
	node = nn;
      else
	fatal ("No case for tree code `%s' - java_complete_tree\n",
	       tree_code_name [TREE_CODE (node)]);
    }
  return node;
}

/* Complete function call's argument. Return a non zero value is an
   error was found.  */

static int
complete_function_arguments (node)
     tree node;
{
  int flag = 0;
  tree cn;

  ctxp->explicit_constructor_p += (CALL_EXPLICIT_CONSTRUCTOR_P (node) ? 1 : 0);
  for (cn = TREE_OPERAND (node, 1); cn; cn = TREE_CHAIN (cn))
    {
      tree wfl = TREE_VALUE (cn), parm, temp;
      parm = java_complete_tree (wfl);

      if (parm == error_mark_node)
	{
	  flag = 1;
	  continue;
	}
      /* If have a string literal that we haven't transformed yet or a
	 crafted string buffer, as a result of use of the the String
	 `+' operator. Build `parm.toString()' and expand it. */
      if ((temp = patch_string (parm)))
	parm = temp;
      /* Inline PRIMTYPE.TYPE read access */
      parm = maybe_build_primttype_type_ref (parm, wfl);

      TREE_VALUE (cn) = parm;
    }
  ctxp->explicit_constructor_p -= (CALL_EXPLICIT_CONSTRUCTOR_P (node) ? 1 : 0);
  return flag;
}

/* Sometimes (for loops and variable initialized during their
   declaration), we want to wrap a statement around a WFL and turn it
   debugable.  */

static tree
build_debugable_stmt (location, stmt)
    int location;
    tree stmt;
{
  if (TREE_CODE (stmt) != EXPR_WITH_FILE_LOCATION)
    {
      stmt = build_expr_wfl (stmt, input_filename, 0, 0);
      EXPR_WFL_LINECOL (stmt) = location;
    }
  JAVA_MAYBE_GENERATE_DEBUG_INFO (stmt);
  return stmt;
}

static tree
build_expr_block (body, decls)
     tree body, decls;
{
  tree node = make_node (BLOCK);
  BLOCK_EXPR_DECLS (node) = decls;
  BLOCK_EXPR_BODY (node) = body;
  if (body)
    TREE_TYPE (node) = TREE_TYPE (body);
  TREE_SIDE_EFFECTS (node) = 1;
  return node;
}

/* Create a new function block and link it approriately to current
   function block chain */

static tree
enter_block ()
{
  return (enter_a_block (build_expr_block (NULL_TREE, NULL_TREE)));
}

/* Link block B supercontext to the previous block. The current
   function DECL is used as supercontext when enter_a_block is called
   for the first time for a given function. The current function body
   (DECL_FUNCTION_BODY) is set to be block B.  */

static tree
enter_a_block (b)
     tree b;
{
  tree fndecl = current_function_decl; 

  if (!fndecl) {
    BLOCK_SUPERCONTEXT (b) = current_static_block;
    current_static_block = b;
  }

  else if (!DECL_FUNCTION_BODY (fndecl))
    {
      BLOCK_SUPERCONTEXT (b) = fndecl;
      DECL_FUNCTION_BODY (fndecl) = b;
    }
  else
    {
      BLOCK_SUPERCONTEXT (b) = DECL_FUNCTION_BODY (fndecl);
      DECL_FUNCTION_BODY (fndecl) = b;
    }
  return b;
}

/* Exit a block by changing the current function body
   (DECL_FUNCTION_BODY) to the current block super context, only if
   the block being exited isn't the method's top level one.  */

static tree
exit_block ()
{
  tree b;
  if (current_function_decl)
    {
      b = DECL_FUNCTION_BODY (current_function_decl);
      if (BLOCK_SUPERCONTEXT (b) != current_function_decl)
	DECL_FUNCTION_BODY (current_function_decl) = BLOCK_SUPERCONTEXT (b);
    }
  else
    {
      b = current_static_block;

      if (BLOCK_SUPERCONTEXT (b))
	current_static_block = BLOCK_SUPERCONTEXT (b);
    }
  return b;
}

/* Lookup for NAME in the nested function's blocks, all the way up to
   the current toplevel one. It complies with Java's local variable
   scoping rules.  */

static tree
lookup_name_in_blocks (name)
     tree name;
{
  tree b = GET_CURRENT_BLOCK (current_function_decl);

  while (b != current_function_decl)
    {
      tree current;

      /* Paranoid sanity check. To be removed */
      if (TREE_CODE (b) != BLOCK)
	fatal ("non block expr function body - lookup_name_in_blocks");

      for (current = BLOCK_EXPR_DECLS (b); current; 
	   current = TREE_CHAIN (current))
	if (DECL_NAME (current) == name)
	  return current;
      b = BLOCK_SUPERCONTEXT (b);
    }
  return NULL_TREE;
}

static void
maybe_absorb_scoping_blocks ()
{
  while (BLOCK_EXPR_ORIGIN (GET_CURRENT_BLOCK (current_function_decl)))
    {
      tree b = exit_block ();
      java_method_add_stmt (current_function_decl, b);
      SOURCE_FRONTEND_DEBUG (("Absorbing scoping block at line %d", lineno));
    }
}


/* This section of the source is reserved to build_* functions that
   are building incomplete tree nodes and the patch_* functions that
   are completing them.  */

/* Wrap a non WFL node around a WFL.  */
static tree
build_wfl_wrap (node)
    tree node;
{
  tree wfl, node_to_insert = node;
  
  /* We want to process THIS . xxx symbolicaly, to keep it consistent
     with the way we're processing SUPER. A THIS from a primary as a
     different form than a SUPER. Turn THIS into something symbolic */
  if (TREE_CODE (node) == THIS_EXPR)
    node_to_insert = wfl = build_wfl_node (this_identifier_node);
  else
    wfl = build_expr_wfl (NULL_TREE, ctxp->filename, 0, 0);

  EXPR_WFL_LINECOL (wfl) = EXPR_WFL_LINECOL (node);
  EXPR_WFL_QUALIFICATION (wfl) = build_tree_list (node_to_insert, NULL_TREE);
  return wfl;
}


/* Build a super() constructor invocation. Returns empty_stmt_node if
   we're currently dealing with the class java.lang.Object. */

static tree
build_super_invocation (mdecl)
     tree mdecl;
{
  if (DECL_CONTEXT (mdecl) == object_type_node)
    return empty_stmt_node;
  else
    {
      tree super_wfl = build_wfl_node (super_identifier_node);
      tree a = NULL_TREE, t;
      /* If we're dealing with an anonymous class, pass the arguments
         of the crafted constructor along. */
      if (ANONYMOUS_CLASS_P (DECL_CONTEXT (mdecl)))
	{
	  SKIP_THIS_AND_ARTIFICIAL_PARMS (t, mdecl);
	  for (; t != end_params_node; t = TREE_CHAIN (t))
	    a = tree_cons (NULL_TREE, build_wfl_node (TREE_PURPOSE (t)), a);
	}
      return build_method_invocation (super_wfl, a);
    }
}

/* Build a SUPER/THIS qualified method invocation.  */

static tree
build_this_super_qualified_invocation (use_this, name, args, lloc, rloc)
     int use_this;
     tree name, args;
     int lloc, rloc;
{
  tree invok;
  tree wfl = 
    build_wfl_node (use_this ? this_identifier_node : super_identifier_node);
  EXPR_WFL_LINECOL (wfl) = lloc;
  invok = build_method_invocation (name, args);
  return make_qualified_primary (wfl, invok, rloc);
}

/* Build an incomplete CALL_EXPR node. */

static tree
build_method_invocation (name, args)
    tree name;
    tree args;
{
  tree call = build (CALL_EXPR, NULL_TREE, name, args, NULL_TREE);
  TREE_SIDE_EFFECTS (call) = 1;
  EXPR_WFL_LINECOL (call) = EXPR_WFL_LINECOL (name);
  return call;
}

/* Build an incomplete new xxx(...) node. */

static tree
build_new_invocation (name, args)
    tree name, args;
{
  tree call = build (NEW_CLASS_EXPR, NULL_TREE, name, args, NULL_TREE);
  TREE_SIDE_EFFECTS (call) = 1;
  EXPR_WFL_LINECOL (call) = EXPR_WFL_LINECOL (name);
  return call;
}

/* Build an incomplete assignment expression. */

static tree
build_assignment (op, op_location, lhs, rhs)
     int op, op_location;
     tree lhs, rhs;
{
  tree assignment;
  /* Build the corresponding binop if we deal with a Compound
     Assignment operator. Mark the binop sub-tree as part of a
     Compound Assignment expression */
  if (op != ASSIGN_TK)
    {
      rhs = build_binop (BINOP_LOOKUP (op), op_location, lhs, rhs);
      COMPOUND_ASSIGN_P (rhs) = 1;
    }
  assignment = build (MODIFY_EXPR, NULL_TREE, lhs, rhs);
  TREE_SIDE_EFFECTS (assignment) = 1;
  EXPR_WFL_LINECOL (assignment) = op_location;
  return assignment;
}

/* Print an INTEGER_CST node in a static buffer, and return the buffer. */

char *
print_int_node (node)
    tree node;
{
  static char buffer [80];
  if (TREE_CONSTANT_OVERFLOW (node))
    sprintf (buffer, "<overflow>");
    
  if (TREE_INT_CST_HIGH (node) == 0)
    sprintf (buffer, HOST_WIDE_INT_PRINT_UNSIGNED,
	     TREE_INT_CST_LOW (node));
  else if (TREE_INT_CST_HIGH (node) == -1
	   && TREE_INT_CST_LOW (node) != 0)
    {
      buffer [0] = '-';
      sprintf (&buffer [1], HOST_WIDE_INT_PRINT_UNSIGNED,
	       -TREE_INT_CST_LOW (node));
    }
  else
    sprintf (buffer, HOST_WIDE_INT_PRINT_DOUBLE_HEX,
	     TREE_INT_CST_HIGH (node), TREE_INT_CST_LOW (node));

  return buffer;
}

/* Return 1 if an assignment to a FINAL is attempted in a non suitable
   context.  */

static int
check_final_assignment (lvalue, wfl)
     tree lvalue, wfl;
{
  if (TREE_CODE (lvalue) == COMPOUND_EXPR 
      && JDECL_P (TREE_OPERAND (lvalue, 1)))
    lvalue = TREE_OPERAND (lvalue, 1);

  /* When generating class files, references to the `length' field
     look a bit different.  */
  if ((flag_emit_class_files
       && TREE_CODE (lvalue) == COMPONENT_REF
       && TYPE_ARRAY_P (TREE_TYPE (TREE_OPERAND (lvalue, 0)))
       && FIELD_FINAL (TREE_OPERAND (lvalue, 1)))
      || (TREE_CODE (lvalue) == FIELD_DECL
	  && FIELD_FINAL (lvalue)
	  && !DECL_CLINIT_P (current_function_decl)
	  && !DECL_FINIT_P (current_function_decl)))
    {
      parse_error_context 
        (wfl, "Can't assign a value to the final variable `%s'",
	 IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl)));
      return 1;
    }
  return 0;
}

/* Inline references to java.lang.PRIMTYPE.TYPE when accessed in
   read. This is needed to avoid circularities in the implementation
   of these fields in libjava. */

static tree
maybe_build_primttype_type_ref (rhs, wfl)
    tree rhs, wfl;
{
  tree to_return = NULL_TREE;
  tree rhs_type = TREE_TYPE (rhs);
  if (TREE_CODE (rhs) == COMPOUND_EXPR)
    {
      tree n = TREE_OPERAND (rhs, 1);
      if (TREE_CODE (n) == VAR_DECL 
	  && DECL_NAME (n) == TYPE_identifier_node
	  && rhs_type == class_ptr_type)
	{
	  const char *self_name = IDENTIFIER_POINTER (EXPR_WFL_NODE (wfl));
	  if (!strncmp (self_name, "java.lang.", 10))
	    to_return = build_primtype_type_ref (self_name);
	}
    }
  return (to_return ? to_return : rhs );
}

/* 15.25 Assignment operators. */

static tree
patch_assignment (node, wfl_op1, wfl_op2)
     tree node;
     tree wfl_op1;
     tree wfl_op2;
{
  tree rhs = TREE_OPERAND (node, 1);
  tree lvalue = TREE_OPERAND (node, 0), llvalue;
  tree lhs_type = NULL_TREE, rhs_type, new_rhs = NULL_TREE;
  int error_found = 0;
  int lvalue_from_array = 0;

  /* Can't assign to a (blank) final. */
  if (check_final_assignment (lvalue, wfl_op1))
    error_found = 1;

  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);

  /* Lhs can be a named variable */
  if (JDECL_P (lvalue))
    {
      lhs_type = TREE_TYPE (lvalue);
    }
  /* Or Lhs can be a array acccess. Should that be lvalue ? FIXME +
     comment on reason why */
  else if (TREE_CODE (wfl_op1) == ARRAY_REF)
    {
      lhs_type = TREE_TYPE (lvalue);
      lvalue_from_array = 1;
    }
  /* Or a field access */
  else if (TREE_CODE (lvalue) == COMPONENT_REF)
    lhs_type = TREE_TYPE (lvalue);
  /* Or a function return slot */
  else if (TREE_CODE (lvalue) == RESULT_DECL)
    lhs_type = TREE_TYPE (lvalue);
  /* Otherwise, we might want to try to write into an optimized static
     final, this is an of a different nature, reported further on. */
  else if (TREE_CODE (wfl_op1) == EXPR_WITH_FILE_LOCATION
	   && resolve_expression_name (wfl_op1, &llvalue))
    {
      if (!error_found && check_final_assignment (llvalue, wfl_op1))
	{
	  /* What we should do instead is resetting the all the flags
	     previously set, exchange lvalue for llvalue and continue. */
	  error_found = 1;
	  return error_mark_node;
	}
      else 
	lhs_type = TREE_TYPE (lvalue);
    }
  else 
    {
      parse_error_context (wfl_op1, "Invalid left hand side of assignment");
      error_found = 1;
    }

  rhs_type = TREE_TYPE (rhs);
  /* 5.1 Try the assignment conversion for builtin type. */
  new_rhs = try_builtin_assignconv (wfl_op1, lhs_type, rhs);

  /* 5.2 If it failed, try a reference conversion */
  if (!new_rhs && (new_rhs = try_reference_assignconv (lhs_type, rhs)))
    lhs_type = promote_type (rhs_type);

  /* 15.25.2 If we have a compound assignment, convert RHS into the
     type of the LHS */
  else if (COMPOUND_ASSIGN_P (TREE_OPERAND (node, 1)))
    new_rhs = convert (lhs_type, rhs);

  /* Explicit cast required. This is an error */
  if (!new_rhs)
    {
      char *t1 = xstrdup (lang_printable_name (TREE_TYPE (rhs), 0));
      char *t2 = xstrdup (lang_printable_name (lhs_type, 0));
      tree wfl;
      char operation [32];	/* Max size known */

      /* If the assignment is part of a declaration, we use the WFL of
	 the declared variable to point out the error and call it a
	 declaration problem. If the assignment is a genuine =
	 operator, we call is a operator `=' problem, otherwise we
	 call it an assignment problem. In both of these last cases,
	 we use the WFL of the operator to indicate the error. */

      if (MODIFY_EXPR_FROM_INITIALIZATION_P (node))
	{
	  wfl = wfl_op1;
	  strcpy (operation, "declaration");
	}
      else
	{
	  wfl = wfl_operator;
	  if (COMPOUND_ASSIGN_P (TREE_OPERAND (node, 1)))
	    strcpy (operation, "assignment");
	  else if (TREE_CODE (TREE_OPERAND (node, 0)) == RESULT_DECL)
	    strcpy (operation, "`return'");
	  else
	    strcpy (operation, "`='");
	}

      if (!valid_cast_to_p (rhs_type, lhs_type))
	parse_error_context
	  (wfl, "Incompatible type for %s. Can't convert `%s' to `%s'",
	   operation, t1, t2);
      else
	parse_error_context (wfl, "Incompatible type for %s. Explicit cast needed to convert `%s' to `%s'",
			     operation, t1, t2);
      free (t1); free (t2);
      error_found = 1;
    }

  /* Inline read access to java.lang.PRIMTYPE.TYPE */
  if (new_rhs)
    new_rhs = maybe_build_primttype_type_ref (new_rhs, wfl_op2);

  if (error_found)
    return error_mark_node;

  /* 10.10: Array Store Exception runtime check */
  if (!flag_emit_class_files
      && !flag_emit_xref
      && lvalue_from_array 
      && JREFERENCE_TYPE_P (TYPE_ARRAY_ELEMENT (lhs_type)))
    {
      tree check;
      tree base = lvalue;

      /* We need to retrieve the right argument for _Jv_CheckArrayStore */
      if (TREE_CODE (lvalue) == COMPOUND_EXPR)
	base = TREE_OPERAND (lvalue, 0);
      else
	{
	  if (flag_bounds_check)
	    base = TREE_OPERAND (TREE_OPERAND (TREE_OPERAND (base, 0), 1), 0);
	  else
	    base = TREE_OPERAND (TREE_OPERAND (base, 0), 0);
	}

      /* Build the invocation of _Jv_CheckArrayStore */
      new_rhs = save_expr (new_rhs);
      check = build (CALL_EXPR, void_type_node,
		     build_address_of (soft_checkarraystore_node),
		     tree_cons (NULL_TREE, base,
				build_tree_list (NULL_TREE, new_rhs)),
		     NULL_TREE);
      TREE_SIDE_EFFECTS (check) = 1;

      /* We have to decide on an insertion point */
      if (TREE_CODE (lvalue) == COMPOUND_EXPR)
	{
	  tree t;
	  if (flag_bounds_check)
	    {
	      t = TREE_OPERAND (TREE_OPERAND (TREE_OPERAND (lvalue, 1), 0), 0);
	      TREE_OPERAND (TREE_OPERAND (TREE_OPERAND (lvalue, 1), 0), 0) =
		build (COMPOUND_EXPR, void_type_node, t, check);
	    }
	  else
	    TREE_OPERAND (lvalue, 1) = build (COMPOUND_EXPR, lhs_type,
					      check, TREE_OPERAND (lvalue, 1));
	}
      else 
	{
	  /* Make sure the bound check will happen before the store check */
	  if (flag_bounds_check)
	    TREE_OPERAND (TREE_OPERAND (lvalue, 0), 0) =
	      build (COMPOUND_EXPR, void_type_node,
		     TREE_OPERAND (TREE_OPERAND (lvalue, 0), 0), check);
	  else
	    lvalue = build (COMPOUND_EXPR, lhs_type, check, lvalue);
	}
    }

  TREE_OPERAND (node, 0) = lvalue;
  TREE_OPERAND (node, 1) = new_rhs;
  TREE_TYPE (node) = lhs_type;
  return node;
}

/* Check that type SOURCE can be cast into type DEST. If the cast
   can't occur at all, return 0 otherwise 1. This function is used to
   produce accurate error messages on the reasons why an assignment
   failed. */

static tree
try_reference_assignconv (lhs_type, rhs)
     tree lhs_type, rhs;
{
  tree new_rhs = NULL_TREE;
  tree rhs_type = TREE_TYPE (rhs);

  if (!JPRIMITIVE_TYPE_P (rhs_type) && JREFERENCE_TYPE_P (lhs_type))
    {
      /* `null' may be assigned to any reference type */
      if (rhs == null_pointer_node)
        new_rhs = null_pointer_node;
      /* Try the reference assignment conversion */
      else if (valid_ref_assignconv_cast_p (rhs_type, lhs_type, 0))
	new_rhs = rhs;
      /* This is a magic assignment that we process differently */
      else if (rhs == soft_exceptioninfo_call_node)
	new_rhs = rhs;
    }
  return new_rhs;
}

/* Check that RHS can be converted into LHS_TYPE by the assignment
   conversion (5.2), for the cases of RHS being a builtin type. Return
   NULL_TREE if the conversion fails or if because RHS isn't of a
   builtin type. Return a converted RHS if the conversion is possible.  */

static tree
try_builtin_assignconv (wfl_op1, lhs_type, rhs)
     tree wfl_op1, lhs_type, rhs;
{
  tree new_rhs = NULL_TREE;
  tree rhs_type = TREE_TYPE (rhs);

  /* Zero accepted everywhere */
  if (TREE_CODE (rhs) == INTEGER_CST 
      && TREE_INT_CST_HIGH (rhs) == 0 && TREE_INT_CST_LOW (rhs) == 0
      && JPRIMITIVE_TYPE_P (rhs_type))
    new_rhs = convert (lhs_type, rhs);

  /* 5.1.1 Try Identity Conversion,
     5.1.2 Try Widening Primitive Conversion */
  else if (valid_builtin_assignconv_identity_widening_p (lhs_type, rhs_type))
    new_rhs = convert (lhs_type, rhs);

  /* Try a narrowing primitive conversion (5.1.3): 
       - expression is a constant expression of type int AND
       - variable is byte, short or char AND
       - The value of the expression is representable in the type of the 
         variable */
  else if (rhs_type == int_type_node && TREE_CONSTANT (rhs)
	   && (lhs_type == byte_type_node || lhs_type == char_type_node
	       || lhs_type == short_type_node))
    {
      if (int_fits_type_p (rhs, lhs_type))
        new_rhs = convert (lhs_type, rhs);
      else if (wfl_op1)		/* Might be called with a NULL */
	parse_warning_context 
	  (wfl_op1, "Constant expression `%s' to wide for narrowing primitive conversion to `%s'", 
	   print_int_node (rhs), lang_printable_name (lhs_type, 0));
      /* Reported a warning that will turn into an error further
	 down, so we don't return */
    }

  return new_rhs;
}

/* Return 1 if RHS_TYPE can be converted to LHS_TYPE by identity
   conversion (5.1.1) or widening primitve conversion (5.1.2).  Return
   0 is the conversion test fails.  This implements parts the method
   invocation convertion (5.3).  */

static int
valid_builtin_assignconv_identity_widening_p (lhs_type, rhs_type)
     tree lhs_type, rhs_type;
{
  /* 5.1.1: This is the identity conversion part. */
  if (lhs_type == rhs_type)
    return 1;

  /* Reject non primitive types */
  if (!JPRIMITIVE_TYPE_P (lhs_type) || !JPRIMITIVE_TYPE_P (rhs_type))
    return 0;

  /* 5.1.2: widening primitive conversion. byte, even if it's smaller
     than a char can't be converted into a char. Short can't too, but
     the < test below takes care of that */
  if (lhs_type == char_type_node && rhs_type == byte_type_node)
    return 0;

  /* Accept all promoted type here. Note, we can't use <= in the test
     below, because we still need to bounce out assignments of short
     to char and the likes */
  if (lhs_type == int_type_node
      && (rhs_type == promoted_byte_type_node
	  || rhs_type == promoted_short_type_node
	  || rhs_type == promoted_char_type_node
	  || rhs_type == promoted_boolean_type_node))
    return 1;

  /* From here, an integral is widened if its precision is smaller
     than the precision of the LHS or if the LHS is a floating point
     type, or the RHS is a float and the RHS a double. */
  if ((JINTEGRAL_TYPE_P (rhs_type) && JINTEGRAL_TYPE_P (lhs_type) 
       && (TYPE_PRECISION (rhs_type) < TYPE_PRECISION (lhs_type)))
      || (JINTEGRAL_TYPE_P (rhs_type) && JFLOAT_TYPE_P (lhs_type))
      || (rhs_type == float_type_node && lhs_type == double_type_node))
    return 1;

  return 0;
}

/* Check that something of SOURCE type can be assigned or cast to
   something of DEST type at runtime. Return 1 if the operation is
   valid, 0 otherwise. If CAST is set to 1, we're treating the case
   were SOURCE is cast into DEST, which borrows a lot of the
   assignment check. */

static int
valid_ref_assignconv_cast_p (source, dest, cast)
     tree source;
     tree dest;
     int cast;
{
  /* SOURCE or DEST might be null if not from a declared entity. */
  if (!source || !dest)
    return 0;
  if (JNULLP_TYPE_P (source))
    return 1;
  if (TREE_CODE (source) == POINTER_TYPE)
    source = TREE_TYPE (source);
  if (TREE_CODE (dest) == POINTER_TYPE)
    dest = TREE_TYPE (dest);
  /* Case where SOURCE is a class type */
  if (TYPE_CLASS_P (source))
    {
      if (TYPE_CLASS_P (dest))
	return  (source == dest 
		 || inherits_from_p (source, dest)
		 || enclosing_context_p (dest, source /*source, dest*/)
		 || (cast && inherits_from_p (dest, source)));
      if (TYPE_INTERFACE_P (dest))
	{
	  /* If doing a cast and SOURCE is final, the operation is
             always correct a compile time (because even if SOURCE
             does not implement DEST, a subclass of SOURCE might). */
	  if (cast && !CLASS_FINAL (TYPE_NAME (source)))
	    return 1;
	  /* Otherwise, SOURCE must implement DEST */
	  return interface_of_p (dest, source);
	}
      /* DEST is an array, cast permited if SOURCE is of Object type */
      return (cast && source == object_type_node ? 1 : 0);
    }
  if (TYPE_INTERFACE_P (source))
    {
      if (TYPE_CLASS_P (dest))
	{
	  /* If not casting, DEST must be the Object type */
	  if (!cast)
	    return dest == object_type_node;
	  /* We're doing a cast. The cast is always valid is class
	     DEST is not final, otherwise, DEST must implement SOURCE */
	  else if (!CLASS_FINAL (TYPE_NAME (dest)))
	    return 1;
	  else
	    return interface_of_p (source, dest);
	}
      if (TYPE_INTERFACE_P (dest))
	{
	  /* If doing a cast, then if SOURCE and DEST contain method
             with the same signature but different return type, then
             this is a (compile time) error */
	  if (cast)
	    {
	      tree method_source, method_dest;
	      tree source_type;
	      tree source_sig;
	      tree source_name;
	      for (method_source = TYPE_METHODS (source); method_source; 
		   method_source = TREE_CHAIN (method_source))
		{
		  source_sig = 
		    build_java_argument_signature (TREE_TYPE (method_source));
		  source_type = TREE_TYPE (TREE_TYPE (method_source));
		  source_name = DECL_NAME (method_source);
		  for (method_dest = TYPE_METHODS (dest);
		       method_dest; method_dest = TREE_CHAIN (method_dest))
		    if (source_sig == 
			build_java_argument_signature (TREE_TYPE (method_dest))
			&& source_name == DECL_NAME (method_dest)
			&& source_type != TREE_TYPE (TREE_TYPE (method_dest)))
		      return 0;
		}
	      return 1;
	    }
	  else
	    return source == dest || interface_of_p (dest, source);
	}
      else			/* Array */
	return (cast ? 
		(DECL_NAME (TYPE_NAME (source)) == java_lang_cloneable) : 0);
    }
  if (TYPE_ARRAY_P (source))
    {
      if (TYPE_CLASS_P (dest))
	return dest == object_type_node;
      /* Can't cast an array to an interface unless the interface is
	 java.lang.Cloneable */
      if (TYPE_INTERFACE_P (dest))
	return (DECL_NAME (TYPE_NAME (dest)) == java_lang_cloneable ? 1 : 0);
      else			/* Arrays */
	{
	  tree source_element_type = TYPE_ARRAY_ELEMENT (source);
	  tree dest_element_type = TYPE_ARRAY_ELEMENT (dest);
	  
	  /* In case of severe errors, they turn out null */
	  if (!dest_element_type || !source_element_type)
	    return 0;
	  if (source_element_type == dest_element_type)
	    return 1;
	  return valid_ref_assignconv_cast_p (source_element_type,
					      dest_element_type, cast);
	}
      return 0;
    }
  return 0;
}

static int
valid_cast_to_p (source, dest)
     tree source;
     tree dest;
{
  if (TREE_CODE (source) == POINTER_TYPE)
    source = TREE_TYPE (source);
  if (TREE_CODE (dest) == POINTER_TYPE)
    dest = TREE_TYPE (dest);

  if (TREE_CODE (source) == RECORD_TYPE && TREE_CODE (dest) == RECORD_TYPE)
    return valid_ref_assignconv_cast_p (source, dest, 1);

  else if (JNUMERIC_TYPE_P (source) && JNUMERIC_TYPE_P (dest))
    return 1;

  return 0;
}

/* Method invocation conversion test. Return 1 if type SOURCE can be
   converted to type DEST through the methond invocation conversion
   process (5.3) */

static tree
do_unary_numeric_promotion (arg)
     tree arg;
{
  tree type = TREE_TYPE (arg);
  if (TREE_CODE (type) == INTEGER_TYPE ? TYPE_PRECISION (type) < 32
      : TREE_CODE (type) == CHAR_TYPE)
    arg = convert (int_type_node, arg);
  return arg;
}

/* Return a non zero value if SOURCE can be converted into DEST using
   the method invocation conversion rule (5.3).  */
static int
valid_method_invocation_conversion_p (dest, source)
     tree dest, source;
{
  return ((JPRIMITIVE_TYPE_P (source) && JPRIMITIVE_TYPE_P (dest)
	   && valid_builtin_assignconv_identity_widening_p (dest, source))
	  || ((JREFERENCE_TYPE_P (source) || JNULLP_TYPE_P (source))
	      && (JREFERENCE_TYPE_P (dest) || JNULLP_TYPE_P (dest))
	      && valid_ref_assignconv_cast_p (source, dest, 0)));
}

/* Build an incomplete binop expression. */

static tree
build_binop (op, op_location, op1, op2)
     enum tree_code op;
     int op_location;
     tree op1, op2;
{
  tree binop = build (op, NULL_TREE, op1, op2);
  TREE_SIDE_EFFECTS (binop) = 1;
  /* Store the location of the operator, for better error report. The
     string of the operator will be rebuild based on the OP value. */
  EXPR_WFL_LINECOL (binop) = op_location;
  return binop;
}

/* Build the string of the operator retained by NODE. If NODE is part
   of a compound expression, add an '=' at the end of the string. This
   function is called when an error needs to be reported on an
   operator. The string is returned as a pointer to a static character
   buffer. */

static char *
operator_string (node)
     tree node;
{
#define BUILD_OPERATOR_STRING(S)					\
  {									\
    sprintf (buffer, "%s%s", S, (COMPOUND_ASSIGN_P (node) ? "=" : ""));	\
    return buffer;							\
  }
  
  static char buffer [10];
  switch (TREE_CODE (node))
    {
    case MULT_EXPR: BUILD_OPERATOR_STRING ("*");
    case RDIV_EXPR: BUILD_OPERATOR_STRING ("/");
    case TRUNC_MOD_EXPR: BUILD_OPERATOR_STRING ("%");
    case PLUS_EXPR: BUILD_OPERATOR_STRING ("+");
    case MINUS_EXPR: BUILD_OPERATOR_STRING ("-");
    case LSHIFT_EXPR: BUILD_OPERATOR_STRING ("<<");
    case RSHIFT_EXPR: BUILD_OPERATOR_STRING (">>");
    case URSHIFT_EXPR: BUILD_OPERATOR_STRING (">>>");
    case BIT_AND_EXPR: BUILD_OPERATOR_STRING ("&");
    case BIT_XOR_EXPR: BUILD_OPERATOR_STRING ("^");
    case BIT_IOR_EXPR: BUILD_OPERATOR_STRING ("|");
    case TRUTH_ANDIF_EXPR: BUILD_OPERATOR_STRING ("&&");
    case TRUTH_ORIF_EXPR: BUILD_OPERATOR_STRING ("||");
    case EQ_EXPR: BUILD_OPERATOR_STRING ("==");
    case NE_EXPR: BUILD_OPERATOR_STRING ("!=");
    case GT_EXPR: BUILD_OPERATOR_STRING (">");
    case GE_EXPR: BUILD_OPERATOR_STRING (">=");
    case LT_EXPR: BUILD_OPERATOR_STRING ("<");
    case LE_EXPR: BUILD_OPERATOR_STRING ("<=");
    case UNARY_PLUS_EXPR: BUILD_OPERATOR_STRING ("+");
    case NEGATE_EXPR: BUILD_OPERATOR_STRING ("-");
    case TRUTH_NOT_EXPR: BUILD_OPERATOR_STRING ("!");
    case BIT_NOT_EXPR: BUILD_OPERATOR_STRING ("~");
    case PREINCREMENT_EXPR:	/* Fall through */
    case POSTINCREMENT_EXPR: BUILD_OPERATOR_STRING ("++");
    case PREDECREMENT_EXPR:	/* Fall through */
    case POSTDECREMENT_EXPR: BUILD_OPERATOR_STRING ("--");
    default:
      fatal ("unregistered operator %s - operator_string",
	     tree_code_name [TREE_CODE (node)]);
    }
  return NULL;
#undef BUILD_OPERATOR_STRING
}

/* Return 1 if VAR_ACCESS1 is equivalent to VAR_ACCESS2.  */

static int
java_decl_equiv (var_acc1, var_acc2)
     tree var_acc1, var_acc2;
{
  if (JDECL_P (var_acc1))
    return (var_acc1 == var_acc2);
  
  return (TREE_CODE (var_acc1) == COMPONENT_REF
	  && TREE_CODE (var_acc2) == COMPONENT_REF
	  && TREE_OPERAND (TREE_OPERAND (var_acc1, 0), 0)
	     == TREE_OPERAND (TREE_OPERAND (var_acc2, 0), 0)
	  && TREE_OPERAND (var_acc1, 1) == TREE_OPERAND (var_acc2, 1));
}

/* Return a non zero value if CODE is one of the operators that can be
   used in conjunction with the `=' operator in a compound assignment.  */

static int
binop_compound_p (code)
    enum tree_code code;
{
  int i;
  for (i = 0; i < BINOP_COMPOUND_CANDIDATES; i++)
    if (binop_lookup [i] == code)
      break;

  return i < BINOP_COMPOUND_CANDIDATES;
}

/* Reorganize after a fold to get SAVE_EXPR to generate what we want.  */

static tree
java_refold (t)
     tree t;
{
  tree c, b, ns, decl;

  if (TREE_CODE (t) != MODIFY_EXPR)
    return t;

  c = TREE_OPERAND (t, 1);
  if (! (c && TREE_CODE (c) == COMPOUND_EXPR
	 && TREE_CODE (TREE_OPERAND (c, 0)) == MODIFY_EXPR
	 && binop_compound_p (TREE_CODE (TREE_OPERAND (c, 1)))))
    return t;

  /* Now the left branch of the binary operator. */
  b = TREE_OPERAND (TREE_OPERAND (c, 1), 0);
  if (! (b && TREE_CODE (b) == NOP_EXPR 
	 && TREE_CODE (TREE_OPERAND (b, 0)) == SAVE_EXPR))
    return t;

  ns = TREE_OPERAND (TREE_OPERAND (b, 0), 0);
  if (! (ns && TREE_CODE (ns) == NOP_EXPR
	 && TREE_CODE (TREE_OPERAND (ns, 0)) == SAVE_EXPR))
    return t;

  decl = TREE_OPERAND (TREE_OPERAND (ns, 0), 0);
  if ((JDECL_P (decl) || TREE_CODE (decl) == COMPONENT_REF)
      /* It's got to be the an equivalent decl */
      && java_decl_equiv (decl, TREE_OPERAND (TREE_OPERAND (c, 0), 0)))
    {
      /* Shorten the NOP_EXPR/SAVE_EXPR path. */
      TREE_OPERAND (TREE_OPERAND (c, 1), 0) = TREE_OPERAND (ns, 0);
      /* Substitute the COMPOUND_EXPR by the BINOP_EXPR */
      TREE_OPERAND (t, 1) = TREE_OPERAND (c, 1);
      /* Change the right part of the BINOP_EXPR */
      TREE_OPERAND (TREE_OPERAND (t, 1), 1) = TREE_OPERAND (c, 0);
    }

  return t;
}

/* Binary operators (15.16 up to 15.18). We return error_mark_node on
   errors but we modify NODE so that it contains the type computed
   according to the expression, when it's fixed. Otherwise, we write
   error_mark_node as the type. It allows us to further the analysis
   of remaining nodes and detects more errors in certain cases.  */

static tree
patch_binop (node, wfl_op1, wfl_op2)
     tree node;
     tree wfl_op1;
     tree wfl_op2;
{
  tree op1 = TREE_OPERAND (node, 0);
  tree op2 = TREE_OPERAND (node, 1);
  tree op1_type = TREE_TYPE (op1);
  tree op2_type = TREE_TYPE (op2);
  tree prom_type = NULL_TREE, cn;
  int code = TREE_CODE (node);

  /* If 1, tell the routine that we have to return error_mark_node
     after checking for the initialization of the RHS */
  int error_found = 0;

  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);

  switch (code)
    {
    /* 15.16 Multiplicative operators */
    case MULT_EXPR:		/* 15.16.1 Multiplication Operator * */
    case RDIV_EXPR:		/* 15.16.2 Division Operator / */
    case TRUNC_DIV_EXPR:	/* 15.16.2 Integral type Division Operator / */
    case TRUNC_MOD_EXPR:	/* 15.16.3 Remainder operator % */
      if (!JPRIMITIVE_TYPE_P (op1_type) || !JPRIMITIVE_TYPE_P (op2_type))
	{
	  if (!JPRIMITIVE_TYPE_P (op1_type))
	    ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
	  if (!JPRIMITIVE_TYPE_P (op2_type) && (op1_type != op2_type))
	    ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	  break;
	}
      prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
      /* Change the division operator if necessary */
      if (code == RDIV_EXPR && TREE_CODE (prom_type) == INTEGER_TYPE)
	TREE_SET_CODE (node, TRUNC_DIV_EXPR);

      if (TREE_CODE (prom_type) == INTEGER_TYPE
	  && flag_use_divide_subroutine
	  && ! flag_emit_class_files
	  && (code == RDIV_EXPR || code == TRUNC_MOD_EXPR))
	return build_java_soft_divmod (TREE_CODE (node), prom_type, op1, op2);
 
      /* This one is more complicated. FLOATs are processed by a
	 function call to soft_fmod. Duplicate the value of the
	 COMPOUND_ASSIGN_P flag. */
      if (code == TRUNC_MOD_EXPR)
	{
	  tree mod = build_java_binop (TRUNC_MOD_EXPR, prom_type, op1, op2);
	  COMPOUND_ASSIGN_P (mod) = COMPOUND_ASSIGN_P (node);
	  TREE_SIDE_EFFECTS (mod)
	    = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
	  return mod;
	}
      break;

    /* 15.17 Additive Operators */
    case PLUS_EXPR:		/* 15.17.1 String Concatenation Operator + */

      /* Operation is valid if either one argument is a string
	 constant, a String object or a StringBuffer crafted for the
	 purpose of the a previous usage of the String concatenation
	 operator */

      if (TREE_CODE (op1) == STRING_CST 
	  || TREE_CODE (op2) == STRING_CST
	  || JSTRING_TYPE_P (op1_type)
	  || JSTRING_TYPE_P (op2_type)
	  || IS_CRAFTED_STRING_BUFFER_P (op1)
	  || IS_CRAFTED_STRING_BUFFER_P (op2))
	return build_string_concatenation (op1, op2);

    case MINUS_EXPR:		/* 15.17.2 Additive Operators (+ and -) for
				   Numeric Types */
      if (!JPRIMITIVE_TYPE_P (op1_type) || !JPRIMITIVE_TYPE_P (op2_type))
	{
	  if (!JPRIMITIVE_TYPE_P (op1_type))
	    ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
	  if (!JPRIMITIVE_TYPE_P (op2_type) && (op1_type != op2_type))
	    ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	  break;
	}
      prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
      break;

    /* 15.18 Shift Operators */
    case LSHIFT_EXPR:
    case RSHIFT_EXPR:
    case URSHIFT_EXPR:
      if (!JINTEGRAL_TYPE_P (op1_type) || !JINTEGRAL_TYPE_P (op2_type))
	{
	  if (!JINTEGRAL_TYPE_P (op1_type))
	    ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op1_type);
	  else
	    {
	      if (JPRIMITIVE_TYPE_P (op2_type))
		parse_error_context (wfl_operator,
				     "Incompatible type for `%s'. Explicit cast needed to convert shift distance from `%s' to integral",
				     operator_string (node),
				     lang_printable_name (op2_type, 0));
	      else
		parse_error_context (wfl_operator,
				     "Incompatible type for `%s'. Can't convert shift distance from `%s' to integral", 
				     operator_string (node),
				     lang_printable_name (op2_type, 0));
	    }
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	  break;
	}

      /* Unary numeric promotion (5.6.1) is performed on each operand
         separatly */
      op1 = do_unary_numeric_promotion (op1);
      op2 = do_unary_numeric_promotion (op2);

      /* The type of the shift expression is the type of the promoted
         type of the left-hand operand */
      prom_type = TREE_TYPE (op1);

      /* Shift int only up to 0x1f and long up to 0x3f */
      if (prom_type == int_type_node)
	op2 = fold (build (BIT_AND_EXPR, int_type_node, op2, 
			   build_int_2 (0x1f, 0)));
      else
	op2 = fold (build (BIT_AND_EXPR, int_type_node, op2, 
			   build_int_2 (0x3f, 0)));

      /* The >>> operator is a >> operating on unsigned quantities */
      if (code == URSHIFT_EXPR && ! flag_emit_class_files)
	{
	  tree to_return;
          tree utype = unsigned_type (prom_type);
          op1 = convert (utype, op1);
	  TREE_SET_CODE (node, RSHIFT_EXPR);
          TREE_OPERAND (node, 0) = op1;
          TREE_OPERAND (node, 1) = op2;
          TREE_TYPE (node) = utype;
	  to_return = convert (prom_type, node);
	  /* Copy the original value of the COMPOUND_ASSIGN_P flag */
	  COMPOUND_ASSIGN_P (to_return) = COMPOUND_ASSIGN_P (node);
	  TREE_SIDE_EFFECTS (to_return)
	    = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
	  return to_return;
	}
      break;

      /* 15.19.1 Type Comparison Operator instaceof */
    case INSTANCEOF_EXPR:

      TREE_TYPE (node) = boolean_type_node;

      if (!(op2_type = resolve_type_during_patch (op2)))
	return error_mark_node;

      /* The first operand must be a reference type or the null type */
      if (!JREFERENCE_TYPE_P (op1_type) && op1 != null_pointer_node)
	error_found = 1;	/* Error reported further below */

      /* The second operand must be a reference type */
      if (!JREFERENCE_TYPE_P (op2_type))
	{
	  SET_WFL_OPERATOR (wfl_operator, node, wfl_op2);
	  parse_error_context
	    (wfl_operator, "Invalid argument `%s' for `instanceof'",
	     lang_printable_name (op2_type, 0));
	  error_found = 1;
	}

      if (!error_found && valid_ref_assignconv_cast_p (op1_type, op2_type, 1))
	{
	  /* If the first operand is null, the result is always false */
	  if (op1 == null_pointer_node)
	    return boolean_false_node;
	  else if (flag_emit_class_files)
	    {
	      TREE_OPERAND (node, 1) = op2_type;
	      TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op1);
	      return node;
	    }
	  /* Otherwise we have to invoke instance of to figure it out */
	  else
	    {
	      tree call =
		build (CALL_EXPR, boolean_type_node,
		       build_address_of (soft_instanceof_node),
		       tree_cons 
		       (NULL_TREE, op1,
			build_tree_list (NULL_TREE,
					 build_class_ref (op2_type))),
		       NULL_TREE);
	      TREE_SIDE_EFFECTS (call) = TREE_SIDE_EFFECTS (op1);
	      return call;
	    }
	}
      /* There is no way the expression operand can be an instance of
	 the type operand. This is a compile time error. */
      else
	{
	  char *t1 = xstrdup (lang_printable_name (op1_type, 0));
	  SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
	  parse_error_context 
	    (wfl_operator, "Impossible for `%s' to be instance of `%s'",
	     t1, lang_printable_name (op2_type, 0));
	  free (t1);
	  error_found = 1;
	}
      
      break;

      /* 15.21 Bitwise and Logical Operators */
    case BIT_AND_EXPR:
    case BIT_XOR_EXPR:
    case BIT_IOR_EXPR:
      if (JINTEGRAL_TYPE_P (op1_type) && JINTEGRAL_TYPE_P (op2_type))
	/* Binary numeric promotion is performed on both operand and the
	   expression retain that type */
	prom_type = binary_numeric_promotion (op1_type, op2_type, &op1, &op2);

      else if (TREE_CODE (op1_type) == BOOLEAN_TYPE 
	       && TREE_CODE (op1_type) == BOOLEAN_TYPE)
	/* The type of the bitwise operator expression is BOOLEAN */
	prom_type = boolean_type_node;
      else
	{
	  if (!JINTEGRAL_TYPE_P (op1_type))
	    ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op1_type);
	  if (!JINTEGRAL_TYPE_P (op2_type) && (op1_type != op2_type))
	    ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op2_type);
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	  /* Insert a break here if adding thing before the switch's
             break for this case */
	}
      break;

      /* 15.22 Conditional-And Operator */
    case TRUTH_ANDIF_EXPR:
      /* 15.23 Conditional-Or Operator */
    case TRUTH_ORIF_EXPR:
      /* Operands must be of BOOLEAN type */
      if (TREE_CODE (op1_type) != BOOLEAN_TYPE || 
	  TREE_CODE (op2_type) != BOOLEAN_TYPE)
	{
	  if (TREE_CODE (op1_type) != BOOLEAN_TYPE)
	    ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op1_type);
	  if (TREE_CODE (op2_type) != BOOLEAN_TYPE && (op1_type != op2_type))
	    ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op2_type);
	  TREE_TYPE (node) = boolean_type_node;
	  error_found = 1;
	  break;
	}
      /* The type of the conditional operators is BOOLEAN */
      prom_type = boolean_type_node;
      break;

      /* 15.19.1 Numerical Comparison Operators <, <=, >, >= */
    case LT_EXPR:
    case GT_EXPR:
    case LE_EXPR:
    case GE_EXPR:
      /* The type of each of the operands must be a primitive numeric
         type */
      if (!JNUMERIC_TYPE_P (op1_type) || ! JNUMERIC_TYPE_P (op2_type))
	{
	  if (!JNUMERIC_TYPE_P (op1_type))
	    ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op1_type);
	  if (!JNUMERIC_TYPE_P (op2_type) && (op1_type != op2_type))
	    ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op2_type);
	  TREE_TYPE (node) = boolean_type_node;
	  error_found = 1;
	  break;
	}
      /* Binary numeric promotion is performed on the operands */
      binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
      /* The type of the relation expression is always BOOLEAN */
      prom_type = boolean_type_node;
      break;

      /* 15.20 Equality Operator */
    case EQ_EXPR:
    case NE_EXPR:
      /* It's time for us to patch the strings. */
      if ((cn = patch_string (op1))) 
       {
         op1 = cn;
         op1_type = TREE_TYPE (op1);
       }
      if ((cn = patch_string (op2))) 
       {
         op2 = cn;
         op2_type = TREE_TYPE (op2);
       }
      
      /* 15.20.1 Numerical Equality Operators == and != */
      /* Binary numeric promotion is performed on the operands */
      if (JNUMERIC_TYPE_P (op1_type) && JNUMERIC_TYPE_P (op2_type))
	binary_numeric_promotion (op1_type, op2_type, &op1, &op2);
      
      /* 15.20.2 Boolean Equality Operators == and != */
      else if (TREE_CODE (op1_type) == BOOLEAN_TYPE &&
	  TREE_CODE (op2_type) == BOOLEAN_TYPE)
	;			/* Nothing to do here */
      
      /* 15.20.3 Reference Equality Operators == and != */
      /* Types have to be either references or the null type. If
         they're references, it must be possible to convert either
         type to the other by casting conversion. */
      else if (op1 == null_pointer_node || op2 == null_pointer_node 
	       || (JREFERENCE_TYPE_P (op1_type) && JREFERENCE_TYPE_P (op2_type)
		   && (valid_ref_assignconv_cast_p (op1_type, op2_type, 1)
		       || valid_ref_assignconv_cast_p (op2_type, 
						       op1_type, 1))))
	;			/* Nothing to do here */
	  
      /* Else we have an error figure what can't be converted into
	 what and report the error */
      else
	{
	  char *t1;
	  t1 = xstrdup (lang_printable_name (op1_type, 0));
	  parse_error_context 
	    (wfl_operator,
	     "Incompatible type for `%s'. Can't convert `%s' to `%s'",
	     operator_string (node), t1, 
	     lang_printable_name (op2_type, 0));
	  free (t1);
	  TREE_TYPE (node) = boolean_type_node;
	  error_found = 1;
	  break;
	}
      prom_type = boolean_type_node;
      break;
    }

  if (error_found)
    return error_mark_node;

  TREE_OPERAND (node, 0) = op1;
  TREE_OPERAND (node, 1) = op2;
  TREE_TYPE (node) = prom_type;
  TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);
  
  if (flag_emit_xref)
    return node;

  /* fold does not respect side-effect order as required for Java but not C.
   * Also, it sometimes create SAVE_EXPRs which are bad when emitting
   * bytecode.
   */
  if (flag_emit_class_files ? (TREE_CONSTANT (op1) && TREE_CONSTANT (op2))
      : ! TREE_SIDE_EFFECTS (node))
    node = fold (node);
  return node;
}

/* Concatenate the STRING_CST CSTE and STRING. When AFTER is a non
   zero value, the value of CSTE comes after the valude of STRING */

static tree
do_merge_string_cste (cste, string, string_len, after)
     tree cste;
     const char *string;
     int string_len, after;
{
  int len = TREE_STRING_LENGTH (cste) + string_len;
  const char *old = TREE_STRING_POINTER (cste);
  TREE_STRING_LENGTH (cste) = len;
  TREE_STRING_POINTER (cste) = obstack_alloc (expression_obstack, len+1);
  if (after)
    {
      strcpy (TREE_STRING_POINTER (cste), string);
      strcat (TREE_STRING_POINTER (cste), old);
    }
  else
    {
      strcpy (TREE_STRING_POINTER (cste), old);
      strcat (TREE_STRING_POINTER (cste), string);
    }
  return cste;
}

/* Tries to merge OP1 (a STRING_CST) and OP2 (if suitable). Return a
   new STRING_CST on success, NULL_TREE on failure */

static tree
merge_string_cste (op1, op2, after)
     tree op1, op2;
     int after;
{
  /* Handle two string constants right away */
  if (TREE_CODE (op2) == STRING_CST)
    return do_merge_string_cste (op1, TREE_STRING_POINTER (op2), 
				 TREE_STRING_LENGTH (op2), after);
  
  /* Reasonable integer constant can be treated right away */
  if (TREE_CODE (op2) == INTEGER_CST && !TREE_CONSTANT_OVERFLOW (op2))
    {
      static const char *boolean_true = "true";
      static const char *boolean_false = "false";
      static const char *null_pointer = "null";
      char ch[3];
      const char *string;
      
      if (op2 == boolean_true_node)
	string = boolean_true;
      else if (op2 == boolean_false_node)
	string = boolean_false;
      else if (op2 == null_pointer_node)
	string = null_pointer;
      else if (TREE_TYPE (op2) == char_type_node)
	{
	  ch[0] = (char )TREE_INT_CST_LOW (op2);
	  ch[1] = '\0';
	  string = ch;
	}
      else
	  string = print_int_node (op2);
      
      return do_merge_string_cste (op1, string, strlen (string), after);
    }
  return NULL_TREE;
}

/* Tries to statically concatenate OP1 and OP2 if possible. Either one
   has to be a STRING_CST and the other part must be a STRING_CST or a
   INTEGRAL constant. Return a new STRING_CST if the operation
   succeed, NULL_TREE otherwise.

   If the case we want to optimize for space, we might want to return
   NULL_TREE for each invocation of this routine. FIXME */

static tree
string_constant_concatenation (op1, op2)
     tree op1, op2;
{
  if (TREE_CODE (op1) == STRING_CST || (TREE_CODE (op2) == STRING_CST))
    {
      tree string, rest;
      int invert;
      
      string = (TREE_CODE (op1) == STRING_CST ? op1 : op2);
      rest   = (string == op1 ? op2 : op1);
      invert = (string == op1 ? 0 : 1 );
      
      /* Walk REST, only if it looks reasonable */
      if (TREE_CODE (rest) != STRING_CST
	  && !IS_CRAFTED_STRING_BUFFER_P (rest)
	  && !JSTRING_TYPE_P (TREE_TYPE (rest))
	  && TREE_CODE (rest) == EXPR_WITH_FILE_LOCATION)
	{
	  rest = java_complete_tree (rest);
	  if (rest == error_mark_node)
	    return error_mark_node;
	  rest = fold (rest);
	}
      return merge_string_cste (string, rest, invert);
    }
  return NULL_TREE;
}

/* Implement the `+' operator. Does static optimization if possible,
   otherwise create (if necessary) and append elements to a
   StringBuffer. The StringBuffer will be carried around until it is
   used for a function call or an assignment. Then toString() will be
   called on it to turn it into a String object. */

static tree
build_string_concatenation (op1, op2)
     tree op1, op2;
{
  tree result;
  int side_effects = TREE_SIDE_EFFECTS (op1) | TREE_SIDE_EFFECTS (op2);

  if (flag_emit_xref)
    return build (PLUS_EXPR, string_type_node, op1, op2);
  
  /* Try to do some static optimization */
  if ((result = string_constant_concatenation (op1, op2)))
    return result;

  /* Discard empty strings on either side of the expression */
  if (TREE_CODE (op1) == STRING_CST && TREE_STRING_LENGTH (op1) == 0)
    {
      op1 = op2;
      op2 = NULL_TREE;
    }
  else if (TREE_CODE (op2) == STRING_CST && TREE_STRING_LENGTH (op2) == 0)
    op2 = NULL_TREE;

  /* If operands are string constant, turn then into object references */
  if (TREE_CODE (op1) == STRING_CST)
    op1 = patch_string_cst (op1);
  if (op2 && TREE_CODE (op2) == STRING_CST)
    op2 = patch_string_cst (op2);

  /* If either one of the constant is null and the other non null
     operand is a String object, return it. */
  if (JSTRING_TYPE_P (TREE_TYPE (op1)) && !op2)
    return op1;

  /* If OP1 isn't already a StringBuffer, create and
     initialize a new one */
  if (!IS_CRAFTED_STRING_BUFFER_P (op1))
    {
      /* Two solutions here: 
	 1) OP1 is a constant string reference, we call new StringBuffer(OP1)
	 2) OP1 is something else, we call new StringBuffer().append(OP1).  */
      if (TREE_CONSTANT (op1) && JSTRING_TYPE_P (TREE_TYPE (op1)))
	op1 = BUILD_STRING_BUFFER (op1);
      else
	{
	  tree aNew = BUILD_STRING_BUFFER (NULL_TREE);
	  op1 = make_qualified_primary (aNew, BUILD_APPEND (op1), 0);
	}
    }

  if (op2)
    {
      /* OP1 is no longer the last node holding a crafted StringBuffer */
      IS_CRAFTED_STRING_BUFFER_P (op1) = 0;
      /* Create a node for `{new...,xxx}.append (op2)' */
      if (op2)
	op1 = make_qualified_primary (op1, BUILD_APPEND (op2), 0);
    }

  /* Mark the last node holding a crafted StringBuffer */
  IS_CRAFTED_STRING_BUFFER_P (op1) = 1;

  TREE_SIDE_EFFECTS (op1) = side_effects;
  return op1;
}

/* Patch the string node NODE. NODE can be a STRING_CST of a crafted
   StringBuffer. If no string were found to be patched, return
   NULL. */

static tree
patch_string (node)
    tree node;
{
  if (node == error_mark_node)
    return error_mark_node;
  if (TREE_CODE (node) == STRING_CST)
    return patch_string_cst (node);
  else if (IS_CRAFTED_STRING_BUFFER_P (node))
    {
      int saved = ctxp->explicit_constructor_p;
      tree invoke = build_method_invocation (wfl_to_string, NULL_TREE);
      tree ret;
      /* Temporary disable forbid the use of `this'. */
      ctxp->explicit_constructor_p = 0;
      ret = java_complete_tree (make_qualified_primary (node, invoke, 0));
      /* String concatenation arguments must be evaluated in order too. */
      ret = force_evaluation_order (ret);
      /* Restore it at its previous value */
      ctxp->explicit_constructor_p = saved;
      return ret;
    }
  return NULL_TREE;
}

/* Build the internal representation of a string constant.  */

static tree
patch_string_cst (node)
     tree node;
{
  int location;
  if (! flag_emit_class_files)
    {
      push_obstacks (&permanent_obstack, &permanent_obstack);
      node = get_identifier (TREE_STRING_POINTER (node));
      location = alloc_name_constant (CONSTANT_String, node);
      node = build_ref_from_constant_pool (location);
      pop_obstacks ();
    }
  TREE_TYPE (node) = string_ptr_type_node;
  TREE_CONSTANT (node) = 1;
  return node;
}

/* Build an incomplete unary operator expression. */

static tree
build_unaryop (op_token, op_location, op1)
     int op_token, op_location;
     tree op1;
{
  enum tree_code op;
  tree unaryop;
  switch (op_token)
    {
    case PLUS_TK: op = UNARY_PLUS_EXPR; break;
    case MINUS_TK: op = NEGATE_EXPR; break;
    case NEG_TK: op = TRUTH_NOT_EXPR; break;
    case NOT_TK: op = BIT_NOT_EXPR; break;
    default: fatal ("Unknown token `%d' for unary operator - build_unaryop",
		    op_token);
    }

  unaryop = build1 (op, NULL_TREE, op1);
  TREE_SIDE_EFFECTS (unaryop) = 1;
  /* Store the location of the operator, for better error report. The
     string of the operator will be rebuild based on the OP value. */
  EXPR_WFL_LINECOL (unaryop) = op_location;
  return unaryop;
}

/* Special case for the ++/-- operators, since they require an extra
   argument to build, which is set to NULL and patched
   later. IS_POST_P is 1 if the operator, 0 otherwise.  */

static tree
build_incdec (op_token, op_location, op1, is_post_p)
     int op_token, op_location;
     tree op1;
     int is_post_p;
{
  static enum tree_code lookup [2][2] = 
    {
      { PREDECREMENT_EXPR, PREINCREMENT_EXPR, },
      { POSTDECREMENT_EXPR, POSTINCREMENT_EXPR, },
    };
  tree node = build (lookup [is_post_p][(op_token - DECR_TK)], 
		     NULL_TREE, op1, NULL_TREE);
  TREE_SIDE_EFFECTS (node) = 1;
  /* Store the location of the operator, for better error report. The
     string of the operator will be rebuild based on the OP value. */
  EXPR_WFL_LINECOL (node) = op_location;
  return node;
}     

/* Build an incomplete cast operator, based on the use of the
   CONVERT_EXPR. Note that TREE_TYPE of the constructed node is
   set. java_complete_tree is trained to walk a CONVERT_EXPR even
   though its type is already set.  */

static tree
build_cast (location, type, exp)
     int location;
     tree type, exp;
{
  tree node = build1 (CONVERT_EXPR, type, exp);
  EXPR_WFL_LINECOL (node) = location;
  return node;
}

/* Build an incomplete class reference operator.  */
static tree
build_incomplete_class_ref (location, class_name)
    int location;
    tree class_name;
{
  tree node = build1 (CLASS_LITERAL, NULL_TREE, class_name);
  EXPR_WFL_LINECOL (node) = location;
  return node;
}

/* Complete an incomplete class reference operator.  */
static tree
patch_incomplete_class_ref (node)
    tree node;
{
  tree type = TREE_OPERAND (node, 0);
  tree ref_type;

  if (!(ref_type = resolve_type_during_patch (type)))
    return error_mark_node;

  if (!flag_emit_class_files || JPRIMITIVE_TYPE_P (ref_type))
    return build_class_ref (ref_type);

  /* If we're emitting class files and we have to deal with non
     primitive types, we invoke (and consider generating) the
     synthetic static method `class$'. */
  if (!TYPE_DOT_CLASS (current_class))
      build_dot_class_method (current_class);
  ref_type = 
    build_dot_class_method_invocation (DECL_NAME (TYPE_NAME (ref_type)));
  return java_complete_tree (ref_type);
}

/* 15.14 Unary operators. We return error_mark_node in case of error,
   but preserve the type of NODE if the type is fixed.  */

static tree
patch_unaryop (node, wfl_op)
     tree node;
     tree wfl_op;
{
  tree op = TREE_OPERAND (node, 0);
  tree op_type = TREE_TYPE (op);
  tree prom_type = NULL_TREE, value, decl;
  int outer_field_flag = 0;
  int code = TREE_CODE (node);
  int error_found = 0;

  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);

  switch (code)
    {
      /* 15.13.2 Postfix Increment Operator ++ */
    case POSTINCREMENT_EXPR:
      /* 15.13.3 Postfix Increment Operator -- */
    case POSTDECREMENT_EXPR:
      /* 15.14.1 Prefix Increment Operator ++ */
    case PREINCREMENT_EXPR:
      /* 15.14.2 Prefix Decrement Operator -- */
    case PREDECREMENT_EXPR:
      op = decl = strip_out_static_field_access_decl (op);
      outer_field_flag = outer_field_expanded_access_p (op, NULL, NULL, NULL);
      /* We might be trying to change an outer field accessed using
         access method. */
      if (outer_field_flag)
	{
	  /* Retrieve the decl of the field we're trying to access. We
             do that by first retrieving the function we would call to
             access the field. It has been already verified that this
             field isn't final */
	  if (flag_emit_class_files)
	    decl = TREE_OPERAND (op, 0);
	  else
	    decl = TREE_OPERAND (TREE_OPERAND (TREE_OPERAND (op, 0), 0), 0);
	  decl = DECL_FUNCTION_ACCESS_DECL (decl);
	}
      /* We really should have a JAVA_ARRAY_EXPR to avoid this */
      else if (!JDECL_P (decl) 
	  && TREE_CODE (decl) != COMPONENT_REF
	  && !(flag_emit_class_files && TREE_CODE (decl) == ARRAY_REF)
	  && TREE_CODE (decl) != INDIRECT_REF
	  && !(TREE_CODE (decl) == COMPOUND_EXPR
	       && TREE_OPERAND (decl, 1)
	       && (TREE_CODE (TREE_OPERAND (decl, 1)) == INDIRECT_REF)))
	{
	  tree lvalue;
	  /* Before screaming, check that we're not in fact trying to
	     increment a optimized static final access, in which case
	     we issue an different error message. */
	  if (!(TREE_CODE (wfl_op) == EXPR_WITH_FILE_LOCATION
		&& resolve_expression_name (wfl_op, &lvalue)
		&& check_final_assignment (lvalue, wfl_op)))
	    parse_error_context (wfl_operator, "Invalid argument to `%s'",
				 operator_string (node));
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	}
      
      if (check_final_assignment (op, wfl_op))
	error_found = 1;

      /* From now on, we know that op if a variable and that it has a
         valid wfl. We use wfl_op to locate errors related to the
         ++/-- operand. */
      else if (!JNUMERIC_TYPE_P (op_type))
	{
	  parse_error_context
	    (wfl_op, "Invalid argument type `%s' to `%s'",
	     lang_printable_name (op_type, 0), operator_string (node));
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	}
      else
	{
	  /* Before the addition, binary numeric promotion is performed on
	     both operands, if really necessary */
	  if (JINTEGRAL_TYPE_P (op_type))
	    {
	      value = build_int_2 (1, 0);
	      TREE_TYPE (value) = TREE_TYPE (node) = op_type;
	    }
	  else
	    {
	      value = build_int_2 (1, 0);
	      TREE_TYPE (node) = 
		binary_numeric_promotion (op_type, 
					  TREE_TYPE (value), &op, &value);
	    }

	  /* We remember we might be accessing an outer field */
	  if (outer_field_flag)
	    {
	      /* We re-generate an access to the field */
	      value = build (PLUS_EXPR, TREE_TYPE (op), 
			     build_outer_field_access (wfl_op, decl), value);
						    
	      /* And we patch the original access$() into a write 
                 with plus_op as a rhs */
	      return outer_field_access_fix (node, op, value);
	    }

	  /* And write back into the node. */
	  TREE_OPERAND (node, 0) = op;
	  TREE_OPERAND (node, 1) = value;
	  /* Convert the overall back into its original type, if
             necessary, and return */
	  if (JINTEGRAL_TYPE_P (op_type))
	    return fold (node);
	  else
	    return fold (convert (op_type, node));
	}
      break;

      /* 15.14.3 Unary Plus Operator + */
    case UNARY_PLUS_EXPR:
      /* 15.14.4 Unary Minus Operator - */
    case NEGATE_EXPR:
      if (!JNUMERIC_TYPE_P (op_type))
	{
	  ERROR_CANT_CONVERT_TO_NUMERIC (wfl_operator, node, op_type);
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	}
      /* Unary numeric promotion is performed on operand */
      else
	{
	  op = do_unary_numeric_promotion (op);
	  prom_type = TREE_TYPE (op);
	  if (code == UNARY_PLUS_EXPR)
	    return fold (op);
	}
      break;

      /* 15.14.5 Bitwise Complement Operator ~ */
    case BIT_NOT_EXPR:
      if (!JINTEGRAL_TYPE_P (op_type))
	{
	  ERROR_CAST_NEEDED_TO_INTEGRAL (wfl_operator, node, op_type);
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	}
      else
	{
	  op = do_unary_numeric_promotion (op);
	  prom_type = TREE_TYPE (op);
	}
      break;

      /* 15.14.6 Logical Complement Operator ! */
    case TRUTH_NOT_EXPR:
      if (TREE_CODE (op_type) != BOOLEAN_TYPE)
	{
	  ERROR_CANT_CONVERT_TO_BOOLEAN (wfl_operator, node, op_type);
	  /* But the type is known. We will report an error if further
	     attempt of a assignment is made with this rhs */
	  TREE_TYPE (node) = boolean_type_node;
	  error_found = 1;
	}
      else
	prom_type = boolean_type_node;
      break;

      /* 15.15 Cast Expression */
    case CONVERT_EXPR:
      value = patch_cast (node, wfl_operator);
      if (value == error_mark_node)
	{
	  /* If this cast is part of an assignment, we tell the code
	     that deals with it not to complain about a mismatch,
	     because things have been cast, anyways */
	  TREE_TYPE (node) = error_mark_node;
	  error_found = 1;
	}
      else
	{
	  value = fold (value);
	  TREE_SIDE_EFFECTS (value) = TREE_SIDE_EFFECTS (op);
	  return value;
	}
      break;
    }
  
  if (error_found)
    return error_mark_node;

  /* There are cases where node has been replaced by something else
     and we don't end up returning here: UNARY_PLUS_EXPR,
     CONVERT_EXPR, {POST,PRE}{INCR,DECR}EMENT_EXPR. */
  TREE_OPERAND (node, 0) = fold (op);
  TREE_TYPE (node) = prom_type;
  TREE_SIDE_EFFECTS (node) = TREE_SIDE_EFFECTS (op);
  return fold (node);
}

/* Generic type resolution that sometimes takes place during node
   patching. Returned the resolved type or generate an error
   message. Return the resolved type or NULL_TREE.  */

static tree
resolve_type_during_patch (type)
     tree type;
{
  if (unresolved_type_p (type, NULL))
    {
      tree type_decl = resolve_no_layout (EXPR_WFL_NODE (type), NULL_TREE);
      if (!type_decl)
	{
	  parse_error_context (type, 
			       "Class `%s' not found in type declaration",
			       IDENTIFIER_POINTER (EXPR_WFL_NODE (type)));
	  return NULL_TREE;
	}
      else
	{
	  CLASS_LOADED_P (TREE_TYPE (type_decl)) = 1;
	  return TREE_TYPE (type_decl);
	}
    }
  return type;
}
/* 5.5 Casting Conversion. error_mark_node is returned if an error is
   found. Otherwise NODE or something meant to replace it is returned.  */

static tree
patch_cast (node, wfl_operator)
     tree node;
     tree wfl_operator;
{
  tree op = TREE_OPERAND (node, 0);
  tree op_type = TREE_TYPE (op);
  tree cast_type = TREE_TYPE (node);
  char *t1;

  /* First resolve OP_TYPE if unresolved */
  if (!(cast_type = resolve_type_during_patch (cast_type)))
    return error_mark_node;

  /* Check on cast that are proven correct at compile time */
  if (JNUMERIC_TYPE_P (cast_type) && JNUMERIC_TYPE_P (op_type))
    {
      /* Same type */
      if (cast_type == op_type)
	return node;

      /* float and double type are converted to the original type main
	 variant and then to the target type. */
      if (JFLOAT_TYPE_P (op_type) && TREE_CODE (cast_type) == CHAR_TYPE)
	op = convert (integer_type_node, op);

      /* Try widening/narowwing convertion. Potentially, things need
	 to be worked out in gcc so we implement the extreme cases
	 correctly. fold_convert() needs to be fixed. */
      return convert (cast_type, op);
    }

  /* It's also valid to cast a boolean into a boolean */
  if (op_type == boolean_type_node && cast_type == boolean_type_node)
    return node;

  /* null can be casted to references */
  if (op == null_pointer_node && JREFERENCE_TYPE_P (cast_type))
    return build_null_of_type (cast_type);

  /* The remaining legal casts involve conversion between reference
     types. Check for their compile time correctness. */
  if (JREFERENCE_TYPE_P (op_type) && JREFERENCE_TYPE_P (cast_type) 
      && valid_ref_assignconv_cast_p (op_type, cast_type, 1))
    {
      TREE_TYPE (node) = promote_type (cast_type);
      /* Now, the case can be determined correct at compile time if
         OP_TYPE can be converted into CAST_TYPE by assignment
         conversion (5.2) */

      if (valid_ref_assignconv_cast_p (op_type, cast_type, 0))
	{
	  TREE_SET_CODE (node, NOP_EXPR);
	  return node;
	}

      if (flag_emit_class_files)
	{
	  TREE_SET_CODE (node, CONVERT_EXPR);
	  return node;
	}

      /* The cast requires a run-time check */
      return build (CALL_EXPR, promote_type (cast_type),
		    build_address_of (soft_checkcast_node),
		    tree_cons (NULL_TREE, build_class_ref (cast_type),
			       build_tree_list (NULL_TREE, op)),
		    NULL_TREE);
    }

  /* Any other casts are proven incorrect at compile time */
  t1 = xstrdup (lang_printable_name (op_type, 0));
  parse_error_context (wfl_operator, "Invalid cast from `%s' to `%s'",
		       t1, lang_printable_name (cast_type, 0));
  free (t1);
  return error_mark_node;
}

/* Build a null constant and give it the type TYPE.  */

static tree
build_null_of_type (type)
     tree type;
{
  tree node = build_int_2 (0, 0);
  TREE_TYPE (node) = promote_type (type);
  return node;
}

/* Build an ARRAY_REF incomplete tree node. Note that operand 1 isn't
   a list of indices. */
static tree
build_array_ref (location, array, index)
     int location;
     tree array, index;
{
  tree node = build (ARRAY_REF, NULL_TREE, array, index);
  EXPR_WFL_LINECOL (node) = location;
  return node;
}

/* 15.12 Array Access Expression */

static tree
patch_array_ref (node)
     tree node;
{
  tree array = TREE_OPERAND (node, 0);
  tree array_type  = TREE_TYPE (array);
  tree index = TREE_OPERAND (node, 1);
  tree index_type = TREE_TYPE (index);
  int error_found = 0;

  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);

  if (TREE_CODE (array_type) == POINTER_TYPE)
    array_type = TREE_TYPE (array_type);

  /* The array reference must be an array */
  if (!TYPE_ARRAY_P (array_type))
    {
      parse_error_context 
	(wfl_operator,
	 "`[]' can only be applied to arrays. It can't be applied to `%s'",
	 lang_printable_name (array_type, 0));
      TREE_TYPE (node) = error_mark_node;
      error_found = 1;
    }

  /* The array index undergoes unary numeric promotion. The promoted
     type must be int */
  index = do_unary_numeric_promotion (index);
  if (TREE_TYPE (index) != int_type_node)
    {
      if (valid_cast_to_p (index_type, int_type_node))
	parse_error_context (wfl_operator,
   "Incompatible type for `[]'. Explicit cast needed to convert `%s' to `int'",
			     lang_printable_name (index_type, 0));
      else
	parse_error_context (wfl_operator,
          "Incompatible type for `[]'. Can't convert `%s' to `int'",
			     lang_printable_name (index_type, 0));
      TREE_TYPE (node) = error_mark_node;
      error_found = 1;
    }

  if (error_found)
    return error_mark_node;

  array_type = TYPE_ARRAY_ELEMENT (array_type);

  if (flag_emit_class_files || flag_emit_xref)
    {
      TREE_OPERAND (node, 0) = array;
      TREE_OPERAND (node, 1) = index;
    }
  else
    {
      /* The save_expr is for correct evaluation order.  It would be cleaner
	 to use force_evaluation_order (see comment there), but that is
	 difficult when we also have to deal with bounds checking. */
      if (TREE_SIDE_EFFECTS (index))
	array = save_expr (array);
      node = build_java_arrayaccess (array, array_type, index);
      if (TREE_SIDE_EFFECTS (index))
	node = build (COMPOUND_EXPR, array_type, array, node);
    }
  TREE_TYPE (node) = array_type;
  return node;
}

/* 15.9 Array Creation Expressions */

static tree
build_newarray_node (type, dims, extra_dims)
     tree type;
     tree dims;
     int extra_dims;
{
  tree node =
    build (NEW_ARRAY_EXPR, NULL_TREE, type, nreverse (dims), 
	   build_int_2 (extra_dims, 0));
  return node;
}

static tree
patch_newarray (node)
     tree node;
{
  tree type = TREE_OPERAND (node, 0);
  tree dims = TREE_OPERAND (node, 1);
  tree cdim, array_type;
  int error_found = 0;
  int ndims = 0;
  int xdims = TREE_INT_CST_LOW (TREE_OPERAND (node, 2));

  /* Dimension types are verified. It's better for the types to be
     verified in order. */
  for (cdim = dims, ndims = 0; cdim; cdim = TREE_CHAIN (cdim), ndims++ )
    {
      int dim_error = 0;
      tree dim = TREE_VALUE (cdim);

      /* Dim might have been saved during its evaluation */
      dim = (TREE_CODE (dim) == SAVE_EXPR ? dim = TREE_OPERAND (dim, 0) : dim);

      /* The type of each specified dimension must be an integral type. */
      if (!JINTEGRAL_TYPE_P (TREE_TYPE (dim)))
	dim_error = 1;

      /* Each expression undergoes an unary numeric promotion (5.6.1) and the
	 promoted type must be int. */
      else
	{
	  dim = do_unary_numeric_promotion (dim);
	  if (TREE_TYPE (dim) != int_type_node)
	    dim_error = 1;
	}

      /* Report errors on types here */
      if (dim_error)
	{
	  parse_error_context 
	    (TREE_PURPOSE (cdim), 
	     "Incompatible type for dimension in array creation expression. %s convert `%s' to `int'", 
	     (valid_cast_to_p (TREE_TYPE (dim), int_type_node) ?
	      "Explicit cast needed to" : "Can't"),
	     lang_printable_name (TREE_TYPE (dim), 0));
	  error_found = 1;
	}

      TREE_PURPOSE (cdim) = NULL_TREE;
    }

  /* Resolve array base type if unresolved */
  if (!(type = resolve_type_during_patch (type)))
    error_found = 1;

  if (error_found)
    {
      /* We don't want further evaluation of this bogus array creation
         operation */
      TREE_TYPE (node) = error_mark_node;
      return error_mark_node;
    }

  /* Set array_type to the actual (promoted) array type of the result. */
  if (TREE_CODE (type) == RECORD_TYPE)
    type = build_pointer_type (type);
  while (--xdims >= 0)
    {
      type = promote_type (build_java_array_type (type, -1));
    }
  dims = nreverse (dims);
  array_type = type;
  for (cdim = dims; cdim; cdim = TREE_CHAIN (cdim))
    {
      type = array_type;
      array_type
	= build_java_array_type (type,
				 TREE_CODE (cdim) == INTEGER_CST
				 ? (HOST_WIDE_INT) TREE_INT_CST_LOW (cdim)
				 : -1);
      array_type = promote_type (array_type);
    }
  dims = nreverse (dims);

  /* The node is transformed into a function call. Things are done
     differently according to the number of dimensions. If the number
     of dimension is equal to 1, then the nature of the base type
     (primitive or not) matters. */
  if (ndims == 1)
    return build_new_array (type, TREE_VALUE (dims));
  
  /* Can't reuse what's already written in expr.c because it uses the
     JVM stack representation. Provide a build_multianewarray. FIXME */
  return build (CALL_EXPR, array_type,
		build_address_of (soft_multianewarray_node),
		tree_cons (NULL_TREE, build_class_ref (TREE_TYPE (array_type)),
			   tree_cons (NULL_TREE, 
				      build_int_2 (ndims, 0), dims )),
		NULL_TREE);
}

/* 10.6 Array initializer.  */

/* Build a wfl for array element that don't have one, so we can
   pin-point errors.  */

static tree
maybe_build_array_element_wfl (node)
     tree node;
{
  if (TREE_CODE (node) != EXPR_WITH_FILE_LOCATION)
    return build_expr_wfl (NULL_TREE, ctxp->filename,
			   ctxp->elc.line, ctxp->elc.prev_col);
  else
    return NULL_TREE;
}

/* Build a NEW_ARRAY_INIT that features a CONSTRUCTOR node. This makes
   identification of initialized arrays easier to detect during walk
   and expansion.  */

static tree
build_new_array_init (location, values)
     int location;
     tree values;
{
  tree constructor = build (CONSTRUCTOR, NULL_TREE, NULL_TREE, values);
  tree to_return = build1 (NEW_ARRAY_INIT, NULL_TREE, constructor);
  EXPR_WFL_LINECOL (to_return) = location;
  return to_return;
}

/* Expand a NEW_ARRAY_INIT node. Return error_mark_node if an error
   occurred.  Otherwise return NODE after having set its type
   appropriately.  */

static tree
patch_new_array_init (type, node)
     tree type, node;
{
  int error_seen = 0;
  tree current, element_type;
  HOST_WIDE_INT length;
  int all_constant = 1;
  tree init = TREE_OPERAND (node, 0);

  if (TREE_CODE (type) != POINTER_TYPE || ! TYPE_ARRAY_P (TREE_TYPE (type)))
    {
      parse_error_context (node,
			   "Invalid array initializer for non-array type `%s'",
			   lang_printable_name (type, 1));
      return error_mark_node;
    }
  type = TREE_TYPE (type);
  element_type = TYPE_ARRAY_ELEMENT (type);

  CONSTRUCTOR_ELTS (init) = nreverse (CONSTRUCTOR_ELTS (init));

  for (length = 0, current = CONSTRUCTOR_ELTS (init);
       current;  length++, current = TREE_CHAIN (current))
    {
      tree elt = TREE_VALUE (current);
      if (elt == NULL_TREE || TREE_CODE (elt) != NEW_ARRAY_INIT)
	{
	  error_seen |= array_constructor_check_entry (element_type, current);
	  elt = TREE_VALUE (current);
	  /* When compiling to native code, STRING_CST is converted to
	     INDIRECT_REF, but still with a TREE_CONSTANT flag. */
	  if (! TREE_CONSTANT (elt) || TREE_CODE (elt) == INDIRECT_REF)
	    all_constant = 0;
	}
      else
	{
	  TREE_VALUE (current) = patch_new_array_init (element_type, elt);
	  TREE_PURPOSE (current) = NULL_TREE;
	  all_constant = 0;
	}
      if (elt && TREE_VALUE (elt) == error_mark_node)
	error_seen = 1;
    }

  if (error_seen)
    return error_mark_node;

  /* Create a new type. We can't reuse the one we have here by
     patching its dimension because it originally is of dimension -1
     hence reused by gcc. This would prevent triangular arrays. */
  type = build_java_array_type (element_type, length);
  TREE_TYPE (init) = TREE_TYPE (TREE_CHAIN (TREE_CHAIN (TYPE_FIELDS (type))));
  TREE_TYPE (node) = promote_type (type);
  TREE_CONSTANT (init) = all_constant;
  TREE_CONSTANT (node) = all_constant;
  return node;
}

/* Verify that one entry of the initializer element list can be
   assigned to the array base type. Report 1 if an error occurred, 0
   otherwise.  */

static int
array_constructor_check_entry (type, entry)
     tree type, entry;
{
  char *array_type_string = NULL;	/* For error reports */
  tree value, type_value, new_value, wfl_value, patched;
  int error_seen = 0;

  new_value = NULL_TREE;
  wfl_value = TREE_VALUE (entry);

  push_obstacks (&permanent_obstack, &permanent_obstack);
  value = java_complete_tree (TREE_VALUE (entry));
  /* patch_string return error_mark_node if arg is error_mark_node */
  if ((patched = patch_string (value)))
    value = patched;
  if (value == error_mark_node)
    return 1;
  
  type_value = TREE_TYPE (value);
  
  /* At anytime, try_builtin_assignconv can report a warning on
     constant overflow during narrowing. */
  SET_WFL_OPERATOR (wfl_operator, TREE_PURPOSE (entry), wfl_value);
  new_value = try_builtin_assignconv (wfl_operator, type, value);
  if (!new_value && (new_value = try_reference_assignconv (type, value)))
    type_value = promote_type (type);

  pop_obstacks ();
  /* Check and report errors */
  if (!new_value)
    {
      const char *msg = (!valid_cast_to_p (type_value, type) ?
		   "Can't" : "Explicit cast needed to");
      if (!array_type_string)
	array_type_string = xstrdup (lang_printable_name (type, 1));
      parse_error_context 
	(wfl_operator, "Incompatible type for array. %s convert `%s' to `%s'",
	 msg, lang_printable_name (type_value, 1), array_type_string);
      error_seen = 1;
    }
  
  if (new_value)
    {
      new_value = maybe_build_primttype_type_ref (new_value, wfl_operator);
      TREE_VALUE (entry) = new_value;
    }

  if (array_type_string)
    free (array_type_string);

  TREE_PURPOSE (entry) = NULL_TREE;
  return error_seen;
}

static tree
build_this (location)
     int location;
{
  tree node = build_wfl_node (this_identifier_node);
  TREE_SET_CODE (node, THIS_EXPR);
  EXPR_WFL_LINECOL (node) = location;
  return node;
}

/* 14.15 The return statement. It builds a modify expression that
   assigns the returned value to the RESULT_DECL that hold the value
   to be returned. */

static tree
build_return (location, op)
     int location;
     tree op;
{
  tree node = build1 (RETURN_EXPR, NULL_TREE, op);
  EXPR_WFL_LINECOL (node) = location;
  node = build_debugable_stmt (location, node);
  return node;
}

static tree
patch_return (node)
     tree node;
{
  tree return_exp = TREE_OPERAND (node, 0);
  tree meth = current_function_decl;
  tree mtype = TREE_TYPE (TREE_TYPE (current_function_decl));
  int error_found = 0;

  TREE_TYPE (node) = error_mark_node;
  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);

  /* It's invalid to have a return value within a function that is
     declared with the keyword void or that is a constructor */
  if (return_exp && (mtype == void_type_node || DECL_CONSTRUCTOR_P (meth)))
    error_found = 1;

  /* It's invalid to use a return statement in a static block */
  if (DECL_CLINIT_P (current_function_decl))
    error_found = 1;

  /* It's invalid to have a no return value within a function that
     isn't declared with the keyword `void' */
  if (!return_exp && (mtype != void_type_node && !DECL_CONSTRUCTOR_P (meth)))
    error_found = 2;
  
  if (in_instance_initializer)
    error_found = 1;

  if (error_found)
    {
      if (in_instance_initializer)
	parse_error_context (wfl_operator,
			     "`return' inside instance initializer");
	
      else if (DECL_CLINIT_P (current_function_decl))
	parse_error_context (wfl_operator,
			     "`return' inside static initializer");

      else if (!DECL_CONSTRUCTOR_P (meth))
	{
	  char *t = xstrdup (lang_printable_name (mtype, 0));
	  parse_error_context (wfl_operator, 
			       "`return' with%s value from `%s %s'",
			       (error_found == 1 ? "" : "out"), 
			       t, lang_printable_name (meth, 0));
	  free (t);
	}
      else
	parse_error_context (wfl_operator, 
			     "`return' with value from constructor `%s'",
			     lang_printable_name (meth, 0));
      return error_mark_node;
    }

  /* If we have a return_exp, build a modify expression and expand
     it. Note: at that point, the assignment is declared valid, but we
     may want to carry some more hacks */
  if (return_exp)
    {
      tree exp = java_complete_tree (return_exp);
      tree modify, patched;

      /* If the function returned value and EXP are booleans, EXP has
      to be converted into the type of DECL_RESULT, which is integer
      (see complete_start_java_method) */
      if (TREE_TYPE (exp) == boolean_type_node &&
	  TREE_TYPE (TREE_TYPE (meth)) == boolean_type_node)
	exp = convert_to_integer (TREE_TYPE (DECL_RESULT (meth)), exp);

      /* `null' can be assigned to a function returning a reference */
      if (JREFERENCE_TYPE_P (TREE_TYPE (TREE_TYPE (meth))) &&
	  exp == null_pointer_node)
	exp = build_null_of_type (TREE_TYPE (TREE_TYPE (meth)));

      if ((patched = patch_string (exp)))
	exp = patched;
      
      modify = build (MODIFY_EXPR, NULL_TREE, DECL_RESULT (meth), exp);
      EXPR_WFL_LINECOL (modify) = EXPR_WFL_LINECOL (node);
      modify = java_complete_tree (modify);

      if (modify != error_mark_node)
	{
	  TREE_SIDE_EFFECTS (modify) = 1;
	  TREE_OPERAND (node, 0) = modify;
	}
      else
	return error_mark_node;
    }
  TREE_TYPE (node) = void_type_node;
  TREE_SIDE_EFFECTS (node) = 1;
  return node;
}

/* 14.8 The if Statement */

static tree
build_if_else_statement (location, expression, if_body, else_body)
     int location;
     tree expression, if_body, else_body;
{
  tree node;
  if (!else_body)
    else_body = empty_stmt_node;
  node = build (COND_EXPR, NULL_TREE, expression, if_body, else_body);
  EXPR_WFL_LINECOL (node) = location;
  node = build_debugable_stmt (location, node);
  return node;
}

static tree
patch_if_else_statement (node)
     tree node;
{
  tree expression = TREE_OPERAND (node, 0);

  TREE_TYPE (node) = error_mark_node;
  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);

  /* The type of expression must be boolean */
  if (TREE_TYPE (expression) != boolean_type_node
      && TREE_TYPE (expression) != promoted_boolean_type_node)
    {
      parse_error_context 
	(wfl_operator, 
	 "Incompatible type for `if'. Can't convert `%s' to `boolean'", 
	 lang_printable_name (TREE_TYPE (expression), 0));
      return error_mark_node;
    }
  
  TREE_TYPE (node) = void_type_node;
  TREE_SIDE_EFFECTS (node) = 1;
  CAN_COMPLETE_NORMALLY (node)
    = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1))
    | CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 2));
  return node;
}

/* 14.6 Labeled Statements */

/* Action taken when a lableled statement is parsed. a new
   LABELED_BLOCK_EXPR is created. No statement is attached to the
   label, yet.  LABEL can be NULL_TREE for artificially-generated blocks. */

static tree
build_labeled_block (location, label)
     int location;
     tree label;
{
  tree label_name ;
  tree label_decl, node;
  if (label == NULL_TREE || label == continue_identifier_node)
    label_name = label;
  else
    {
      label_name = merge_qualified_name (label_id, label);
      /* Issue an error if we try to reuse a label that was previously
	 declared */
      if (IDENTIFIER_LOCAL_VALUE (label_name))
	{
	  EXPR_WFL_LINECOL (wfl_operator) = location;
	  parse_error_context (wfl_operator,
            "Declaration of `%s' shadows a previous label declaration",
			       IDENTIFIER_POINTER (label));
	  EXPR_WFL_LINECOL (wfl_operator) = 
	    EXPR_WFL_LINECOL (IDENTIFIER_LOCAL_VALUE (label_name));
	  parse_error_context (wfl_operator,
            "This is the location of the previous declaration of label `%s'",
			       IDENTIFIER_POINTER (label));
	  java_error_count--;
	}
    }

  label_decl = create_label_decl (label_name);
  node = build (LABELED_BLOCK_EXPR, NULL_TREE, label_decl, NULL_TREE);
  EXPR_WFL_LINECOL (node) = location;
  TREE_SIDE_EFFECTS (node) = 1;
  return node;
}

/* A labeled statement LBE is attached a statement.  */

static tree
finish_labeled_statement (lbe, statement)
     tree lbe;			/* Labeled block expr */
     tree statement;
{
  /* In anyways, tie the loop to its statement */
  LABELED_BLOCK_BODY (lbe) = statement;
  pop_labeled_block ();
  POP_LABELED_BLOCK ();
  return lbe;
}

/* 14.10, 14.11, 14.12 Loop Statements */

/* Create an empty LOOP_EXPR and make it the last in the nested loop
   list. */

static tree
build_new_loop (loop_body)
     tree loop_body;
{
  tree loop =  build (LOOP_EXPR, NULL_TREE, loop_body);
  TREE_SIDE_EFFECTS (loop) = 1;
  PUSH_LOOP (loop);
  return loop;
}

/* Create a loop body according to the following structure:
     COMPOUND_EXPR
       COMPOUND_EXPR		(loop main body)
         EXIT_EXPR		(this order is for while/for loops.
         LABELED_BLOCK_EXPR      the order is reversed for do loops)
           LABEL_DECL           (a continue occuring here branches at the 
           BODY			 end of this labeled block)
       INCREMENT		(if any)

  REVERSED, if non zero, tells that the loop condition expr comes
  after the body, like in the do-while loop.

  To obtain a loop, the loop body structure described above is
  encapsulated within a LOOP_EXPR surrounded by a LABELED_BLOCK_EXPR:

   LABELED_BLOCK_EXPR
     LABEL_DECL                   (use this label to exit the loop)
     LOOP_EXPR
       <structure described above> */

static tree
build_loop_body (location, condition, reversed)
     int location;
     tree condition;
     int reversed;
{
  tree first, second, body;

  condition = build (EXIT_EXPR, NULL_TREE, condition); /* Force walk */
  EXPR_WFL_LINECOL (condition) = location; /* For accurate error report */
  condition = build_debugable_stmt (location, condition);
  TREE_SIDE_EFFECTS (condition) = 1;

  body = build_labeled_block (0, continue_identifier_node);
  first = (reversed ? body : condition);
  second = (reversed ? condition : body);
  return 
    build (COMPOUND_EXPR, NULL_TREE, 
	   build (COMPOUND_EXPR, NULL_TREE, first, second), empty_stmt_node);
}

/* Install CONDITION (if any) and loop BODY (using REVERSED to tell
   their order) on the current loop. Unlink the current loop from the
   loop list.  */

static tree
finish_loop_body (location, condition, body, reversed)
     int location;
     tree condition, body;
     int reversed;
{
  tree to_return = ctxp->current_loop;
  tree loop_body = LOOP_EXPR_BODY (to_return);
  if (condition)
    {
      tree cnode = LOOP_EXPR_BODY_CONDITION_EXPR (loop_body, reversed);
      /* We wrapped the EXIT_EXPR around a WFL so we can debug it.
         The real EXIT_EXPR is one operand further. */
      EXPR_WFL_LINECOL (cnode) = location;
      /* This one is for accurate error reports */
      EXPR_WFL_LINECOL (TREE_OPERAND (cnode, 0)) = location;
      TREE_OPERAND (TREE_OPERAND (cnode, 0), 0) = condition;
    }
  LOOP_EXPR_BODY_BODY_EXPR (loop_body, reversed) = body;
  POP_LOOP ();
  return to_return;
}

/* Tailored version of finish_loop_body for FOR loops, when FOR
   loops feature the condition part */

static tree
finish_for_loop (location, condition, update, body)
    int location;
    tree condition, update, body;
{
  /* Put the condition and the loop body in place */
  tree loop = finish_loop_body (location, condition, body, 0);
  /* LOOP is the current loop which has been now popped of the loop
     stack. Install the update block */
  LOOP_EXPR_BODY_UPDATE_BLOCK (LOOP_EXPR_BODY (loop)) = update;
  return loop;
}

/* Try to find the loop a block might be related to. This comprises
   the case where the LOOP_EXPR is found as the second operand of a
   COMPOUND_EXPR, because the loop happens to have an initialization
   part, then expressed as the first operand of the COMPOUND_EXPR. If
   the search finds something, 1 is returned. Otherwise, 0 is
   returned. The search is assumed to start from a
   LABELED_BLOCK_EXPR's block.  */

static tree
search_loop (statement)
    tree statement;
{
  if (TREE_CODE (statement) == LOOP_EXPR)
    return statement;

  if (TREE_CODE (statement) == BLOCK)
    statement = BLOCK_SUBBLOCKS (statement);
  else
    return NULL_TREE;

  if (statement && TREE_CODE (statement) == COMPOUND_EXPR)
    while (statement && TREE_CODE (statement) == COMPOUND_EXPR)
      statement = TREE_OPERAND (statement, 1);

  return (TREE_CODE (statement) == LOOP_EXPR
	  && FOR_LOOP_P (statement) ? statement : NULL_TREE);
}

/* Return 1 if LOOP can be found in the labeled block BLOCK. 0 is
   returned otherwise.  */

static int
labeled_block_contains_loop_p (block, loop)
    tree block, loop;
{
  if (!block)
    return 0;

  if (LABELED_BLOCK_BODY (block) == loop)
    return 1;

  if (FOR_LOOP_P (loop) && search_loop (LABELED_BLOCK_BODY (block)) == loop)
    return 1;

  return 0;
}

/* If the loop isn't surrounded by a labeled statement, create one and
   insert LOOP as its body.  */

static tree
patch_loop_statement (loop)
     tree loop;
{
  tree loop_label;

  TREE_TYPE (loop) = void_type_node;
  if (labeled_block_contains_loop_p (ctxp->current_labeled_block, loop))
    return loop;

  loop_label = build_labeled_block (0, NULL_TREE);
  /* LOOP is an EXPR node, so it should have a valid EXPR_WFL_LINECOL
     that LOOP_LABEL could enquire about, for a better accuracy. FIXME */
  LABELED_BLOCK_BODY (loop_label) = loop;
  PUSH_LABELED_BLOCK (loop_label);
  return loop_label;
}

/* 14.13, 14.14: break and continue Statements */

/* Build a break or a continue statement. a null NAME indicates an
   unlabeled break/continue statement.  */

static tree
build_bc_statement (location, is_break, name)
     int location, is_break;
     tree name;
{
  tree break_continue, label_block_expr = NULL_TREE;

  if (name)
    {
      if (!(label_block_expr = IDENTIFIER_LOCAL_VALUE 
	    (merge_qualified_name (label_id, EXPR_WFL_NODE (name)))))
	/* Null means that we don't have a target for this named
	   break/continue. In this case, we make the target to be the
	   label name, so that the error can be reported accuratly in
	   patch_bc_statement. */
	label_block_expr = EXPR_WFL_NODE (name);
    }
  /* Unlabeled break/continue will be handled during the
     break/continue patch operation */
  break_continue 
    = build (EXIT_BLOCK_EXPR, NULL_TREE, label_block_expr, NULL_TREE);

  IS_BREAK_STMT_P (break_continue) = is_break;
  TREE_SIDE_EFFECTS (break_continue) = 1;
  EXPR_WFL_LINECOL (break_continue) = location;
  break_continue = build_debugable_stmt (location, break_continue);
  return break_continue;
}

/* Verification of a break/continue statement. */

static tree
patch_bc_statement (node)
     tree node;
{
  tree bc_label = EXIT_BLOCK_LABELED_BLOCK (node), target_stmt;
  tree labeled_block = ctxp->current_labeled_block;
  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
 
  /* Having an identifier here means that the target is unknown. */
  if (bc_label != NULL_TREE && TREE_CODE (bc_label) == IDENTIFIER_NODE)
    {
      parse_error_context (wfl_operator, "No label definition found for `%s'",
			   IDENTIFIER_POINTER (bc_label));
      return error_mark_node;
    }
  if (! IS_BREAK_STMT_P (node))
    {
      /* It's a continue statement. */
      for (;; labeled_block = TREE_CHAIN (labeled_block))
	{
	  if (labeled_block == NULL_TREE)
	    {
	      if (bc_label == NULL_TREE)
		parse_error_context (wfl_operator,
				     "`continue' must be in loop");
	      else
		parse_error_context 
		  (wfl_operator, "continue label `%s' does not name a loop",
		   IDENTIFIER_POINTER (bc_label));
	      return error_mark_node;
	    }
	  if ((DECL_NAME (LABELED_BLOCK_LABEL (labeled_block))
	       == continue_identifier_node)
	      && (bc_label == NULL_TREE
		  || TREE_CHAIN (labeled_block) == bc_label))
	    {
	      bc_label = labeled_block;
	      break;
	    }
	}
    }
  else if (!bc_label)
    { 
      for (;; labeled_block = TREE_CHAIN (labeled_block))
	{
	  if (labeled_block == NULL_TREE)
	    {
	      parse_error_context (wfl_operator,
				     "`break' must be in loop or switch");
	      return error_mark_node;
	    }
	  target_stmt = LABELED_BLOCK_BODY (labeled_block);
	  if (TREE_CODE (target_stmt) == SWITCH_EXPR
	      || search_loop (target_stmt))
	    {
	      bc_label = labeled_block;
	      break;
	    }
	}
    }

  EXIT_BLOCK_LABELED_BLOCK (node) = bc_label;
  CAN_COMPLETE_NORMALLY (bc_label) = 1;

  /* Our break/continue don't return values. */
  TREE_TYPE (node) = void_type_node;
  /* Encapsulate the break within a compound statement so that it's
     expanded all the times by expand_expr (and not clobbered
     sometimes, like after a if statement) */
  node = add_stmt_to_compound (NULL_TREE, void_type_node, node);
  TREE_SIDE_EFFECTS (node) = 1;
  return node;
}

/* Process the exit expression belonging to a loop. Its type must be
   boolean.  */

static tree
patch_exit_expr (node)
     tree node;
{
  tree expression = TREE_OPERAND (node, 0);
  TREE_TYPE (node) = error_mark_node;
  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);

  /* The type of expression must be boolean */
  if (TREE_TYPE (expression) != boolean_type_node)
    {
      parse_error_context 
	(wfl_operator, 
    "Incompatible type for loop conditional. Can't convert `%s' to `boolean'", 
	 lang_printable_name (TREE_TYPE (expression), 0));
      return error_mark_node;
    }
  /* Now we know things are allright, invert the condition, fold and
     return */
  TREE_OPERAND (node, 0) = 
    fold (build1 (TRUTH_NOT_EXPR, boolean_type_node, expression));

  if (! integer_zerop (TREE_OPERAND (node, 0))
      && ctxp->current_loop != NULL_TREE
      && TREE_CODE (ctxp->current_loop) == LOOP_EXPR)
    CAN_COMPLETE_NORMALLY (ctxp->current_loop) = 1;
  if (! integer_onep (TREE_OPERAND (node, 0)))
    CAN_COMPLETE_NORMALLY (node) = 1;


  TREE_TYPE (node) = void_type_node;
  return node;
}

/* 14.9 Switch statement */

static tree
patch_switch_statement (node)
     tree node;
{
  tree se = TREE_OPERAND (node, 0), se_type;

  /* Complete the switch expression */
  se = TREE_OPERAND (node, 0) = java_complete_tree (se);
  se_type = TREE_TYPE (se);
  /* The type of the switch expression must be char, byte, short or
     int */
  if (!JINTEGRAL_TYPE_P (se_type))
    {
      EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (node);
      parse_error_context (wfl_operator,
	  "Incompatible type for `switch'. Can't convert `%s' to `int'",
			   lang_printable_name (se_type, 0));
      /* This is what java_complete_tree will check */
      TREE_OPERAND (node, 0) = error_mark_node;
      return error_mark_node;
    }

  TREE_OPERAND (node, 1) = java_complete_tree (TREE_OPERAND (node, 1));

  /* Ready to return */
  if (TREE_CODE (TREE_OPERAND (node, 1)) == ERROR_MARK)
    {
      TREE_TYPE (node) = error_mark_node;
      return error_mark_node;
    }
  TREE_TYPE (node) = void_type_node;
  TREE_SIDE_EFFECTS (node) = 1;
  CAN_COMPLETE_NORMALLY (node)
    = CAN_COMPLETE_NORMALLY (TREE_OPERAND (node, 1)) 
      || ! SWITCH_HAS_DEFAULT (node);
  return node;
}

/* 14.18 The try/catch statements */

static tree
build_try_statement (location, try_block, catches)
     int location;
     tree try_block, catches;
{
  tree node = build (TRY_EXPR, NULL_TREE, try_block, catches);
  EXPR_WFL_LINECOL (node) = location;
  return node;
}

static tree
build_try_finally_statement (location, try_block, finally)
     int location;
     tree try_block, finally;
{
  tree node = build (TRY_FINALLY_EXPR, NULL_TREE, try_block, finally);
  EXPR_WFL_LINECOL (node) = location;
  return node;
}

static tree
patch_try_statement (node)
     tree node;
{
  int error_found = 0;
  tree try = TREE_OPERAND (node, 0);
  /* Exception handlers are considered in left to right order */
  tree catch = nreverse (TREE_OPERAND (node, 1));
  tree current, caught_type_list = NULL_TREE;

  /* Check catch clauses, if any. Every time we find an error, we try
     to process the next catch clause. We process the catch clause before
     the try block so that when processing the try block we can check thrown
     exceptions againts the caught type list. */
  for (current = catch; current; current = TREE_CHAIN (current))
    {
      tree carg_decl, carg_type;
      tree sub_current, catch_block, catch_clause;
      int unreachable;

      /* At this point, the structure of the catch clause is
	   CATCH_EXPR		(catch node)
	     BLOCK	        (with the decl of the parameter)
               COMPOUND_EXPR
                 MODIFY_EXPR   (assignment of the catch parameter)
		 BLOCK	        (catch clause block)
       */
      catch_clause = TREE_OPERAND (current, 0);
      carg_decl = BLOCK_EXPR_DECLS (catch_clause);
      carg_type = TREE_TYPE (TREE_TYPE (carg_decl));

      /* Catch clauses can't have more than one parameter declared,
	 but it's already enforced by the grammar. Make sure that the
	 only parameter of the clause statement in of class Throwable
	 or a subclass of Throwable, but that was done earlier. The
	 catch clause parameter type has also been resolved. */
      
      /* Just make sure that the catch clause parameter type inherits
	 from java.lang.Throwable */
      if (!inherits_from_p (carg_type, throwable_type_node))
	{
	  EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (current);
	  parse_error_context (wfl_operator,
			       "Can't catch class `%s'. Catch clause parameter type must be a subclass of class `java.lang.Throwable'",
			       lang_printable_name (carg_type, 0));
	  error_found = 1;
	  continue;
	}
      
      /* Partial check for unreachable catch statement: The catch
	 clause is reachable iff is no earlier catch block A in
	 the try statement such that the type of the catch
	 clause's parameter is the same as or a subclass of the
	 type of A's parameter */
      unreachable = 0;
      for (sub_current = catch;
	   sub_current != current; sub_current = TREE_CHAIN (sub_current))
	{
	  tree sub_catch_clause, decl;
	  sub_catch_clause = TREE_OPERAND (sub_current, 0);
	  decl = BLOCK_EXPR_DECLS (sub_catch_clause);

	  if (inherits_from_p (carg_type, TREE_TYPE (TREE_TYPE (decl))))
	    {
	      EXPR_WFL_LINECOL (wfl_operator) = EXPR_WFL_LINECOL (current);
	      parse_error_context 
		(wfl_operator,
		 "`catch' not reached because of the catch clause at line %d",
		 EXPR_WFL_LINENO (sub_current));
	      unreachable = error_found = 1;
	      break;
	    }
	}
      /* Complete the catch clause block */
      catch_block = java_complete_tree (TREE_OPERAND (current, 0));
      if (catch_block == error_mark_node)
	{
	  error_found = 1;
	  continue;
	}
      if (CAN_COMPLETE_NORMALLY (catch_block))
	CAN_COMPLETE_NORMALLY (node) = 1;
      TREE_OPERAND (current, 0) = catch_block;

      if (unreachable)
	continue;

      /* Things to do here: the exception must be thrown */

      /* Link this type to the caught type list */
      caught_type_list = tree_cons (NULL_TREE, carg_type, caught_type_list);
    }

  PUSH_EXCEPTIONS (caught_type_list);
  if ((try = java_complete_tree (try)) == error_mark_node)
    error_found = 1;
  if (CAN_COMPLETE_NORMALLY (try))
    CAN_COMPLETE_NORMALLY (node) = 1;
  POP_EXCEPTIONS ();

  /* Verification ends here */
  if (error_found) 
    return error_mark_node;

  TREE_OPERAND (node, 0) = try;
  TREE_OPERAND (node, 1) = catch;
  TREE_TYPE (node) = void_type_node;
  return node;
}

/* 14.17 The synchronized Statement */

static tree
patch_synchronized_statement (node, wfl_op1)
    tree node, wfl_op1;
{
  tree expr = java_complete_tree (TREE_OPERAND (node, 0));
  tree block = TREE_OPERAND (node, 1);

  tree enter, exit, expr_decl, assignment;

  if (expr == error_mark_node)
    {
      block = java_complete_tree (block);
      return expr;
    }

  /* The TYPE of expr must be a reference type */
  if (!JREFERENCE_TYPE_P (TREE_TYPE (expr)))
    {
      SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
      parse_error_context (wfl_operator, "Incompatible type for `synchronized'. Can't convert `%s' to `java.lang.Object'",
			   lang_printable_name (TREE_TYPE (expr), 0));
      return error_mark_node;
    }

  if (flag_emit_xref)
    {
      TREE_OPERAND (node, 0) = expr;
      TREE_OPERAND (node, 1) = java_complete_tree (block);
      CAN_COMPLETE_NORMALLY (node) = 1;
      return node;
    }

  /* Generate a try-finally for the synchronized statement, except
     that the handler that catches all throw exception calls
     _Jv_MonitorExit and then rethrow the exception.
     The synchronized statement is then implemented as:
     TRY 
       {
         _Jv_MonitorEnter (expression)
	 synchronized_block
         _Jv_MonitorExit (expression)
       }
     CATCH_ALL
       {
         e = _Jv_exception_info ();
	 _Jv_MonitorExit (expression)
	 Throw (e);
       } */

  expr_decl = build_decl (VAR_DECL, generate_name (), TREE_TYPE (expr));
  BUILD_MONITOR_ENTER (enter, expr_decl);
  BUILD_MONITOR_EXIT (exit, expr_decl);
  CAN_COMPLETE_NORMALLY (enter) = 1;
  CAN_COMPLETE_NORMALLY (exit) = 1;
  assignment = build (MODIFY_EXPR, NULL_TREE, expr_decl, expr);
  TREE_SIDE_EFFECTS (assignment) = 1;
  node = build1 (CLEANUP_POINT_EXPR, NULL_TREE,
		 build (COMPOUND_EXPR, NULL_TREE,
			build (WITH_CLEANUP_EXPR, NULL_TREE,
			       build (COMPOUND_EXPR, NULL_TREE,
				      assignment, enter),
			       NULL_TREE, exit),
			block));
  node = build_expr_block (node, expr_decl);

  return java_complete_tree (node);
}

/* 14.16 The throw Statement */

static tree
patch_throw_statement (node, wfl_op1)
    tree node, wfl_op1;
{
  tree expr = TREE_OPERAND (node, 0);
  tree type = TREE_TYPE (expr);
  int unchecked_ok = 0, tryblock_throws_ok = 0;

  /* Thrown expression must be assignable to java.lang.Throwable */
  if (!try_reference_assignconv (throwable_type_node, expr))
    {
      SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
      parse_error_context (wfl_operator,
    "Can't throw `%s'; it must be a subclass of class `java.lang.Throwable'",
			   lang_printable_name (type, 0));
      /* If the thrown expression was a reference, we further the
         compile-time check. */
      if (!JREFERENCE_TYPE_P (type))
	return error_mark_node;
    }

  /* At least one of the following must be true */

  /* The type of the throw expression is a not checked exception,
     i.e. is a unchecked expression. */
  unchecked_ok = IS_UNCHECKED_EXCEPTION_P (TREE_TYPE (type));

  SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
  /* An instance can't throw a checked excetion unless that exception
     is explicitely declared in the `throws' clause of each
     constructor. This doesn't apply to anonymous classes, since they
     don't have declared constructors. */
  if (!unchecked_ok 
      && in_instance_initializer && !ANONYMOUS_CLASS_P (current_class))
    {
      tree current;
      for (current = TYPE_METHODS (current_class); current; 
	   current = TREE_CHAIN (current))
	if (DECL_CONSTRUCTOR_P (current) 
	    && !check_thrown_exceptions_do (TREE_TYPE (expr)))
	  {
	    parse_error_context (wfl_operator, "Checked exception `%s' can't be thrown in instance initializer (not all declared constructor are declaring it in their `throws' clause)", 
				 lang_printable_name (TREE_TYPE (expr), 0));
	    return error_mark_node;
	  }
    }

  /* Throw is contained in a try statement and at least one catch
     clause can receive the thrown expression or the current method is
     declared to throw such an exception. Or, the throw statement is
     contained in a method or constructor declaration and the type of
     the Expression is assignable to at least one type listed in the
     throws clause the declaration. */
  if (!unchecked_ok)
    tryblock_throws_ok = check_thrown_exceptions_do (TREE_TYPE (expr));
  if (!(unchecked_ok || tryblock_throws_ok))
    {
      /* If there is a surrounding try block that has no matching
	 clatch clause, report it first. A surrounding try block exits
	 only if there is something after the list of checked
	 exception thrown by the current function (if any). */
      if (IN_TRY_BLOCK_P ())
	parse_error_context (wfl_operator, "Checked exception `%s' can't be caught by any of the catch clause(s) of the surrounding `try' block",
			     lang_printable_name (type, 0));
      /* If we have no surrounding try statement and the method doesn't have
	 any throws, report it now. FIXME */

      /* We report that the exception can't be throw from a try block
         in all circumstances but when the `throw' is inside a static
         block. */
      else if (!EXCEPTIONS_P (currently_caught_type_list) 
	       && !tryblock_throws_ok)
	{
	  if (DECL_CLINIT_P (current_function_decl))
	    parse_error_context (wfl_operator,
                   "Checked exception `%s' can't be thrown in initializer",
				 lang_printable_name (type, 0));
	  else
	    parse_error_context (wfl_operator,
                   "Checked exception `%s' isn't thrown from a `try' block", 
				 lang_printable_name (type, 0));
	}
      /* Otherwise, the current method doesn't have the appropriate
         throws declaration */
      else
	parse_error_context (wfl_operator, "Checked exception `%s' doesn't match any of current method's `throws' declaration(s)", 
			     lang_printable_name (type, 0));
      return error_mark_node;
    }

  if (! flag_emit_class_files && ! flag_emit_xref)
    BUILD_THROW (node, expr);

  /* If doing xrefs, keep the location where the `throw' was seen. */
  if (flag_emit_xref)
    EXPR_WFL_LINECOL (node) = EXPR_WFL_LINECOL (wfl_op1);
  return node;
}

/* Check that exception said to be thrown by method DECL can be
   effectively caught from where DECL is invoked.  */

static void
check_thrown_exceptions (location, decl)
     int location;
     tree decl;
{
  tree throws;
  /* For all the unchecked exceptions thrown by DECL */
  for (throws = DECL_FUNCTION_THROWS (decl); throws; 
       throws = TREE_CHAIN (throws)) 
    if (!check_thrown_exceptions_do (TREE_VALUE (throws)))
      {
#if 1
	/* Temporary hack to suppresses errors about cloning arrays. FIXME */
	if (DECL_NAME (decl) == get_identifier ("clone"))
	  continue;
#endif
	EXPR_WFL_LINECOL (wfl_operator) = location;
	if (DECL_FINIT_P (current_function_decl))
	  parse_error_context
            (wfl_operator, "Exception `%s' can't be thrown in initializer",
	     lang_printable_name (TREE_VALUE (throws), 0));
	else 
	  {
	    parse_error_context 
	      (wfl_operator, "Exception `%s' must be caught, or it must be declared in the `throws' clause of `%s'", 
	       lang_printable_name (TREE_VALUE (throws), 0),
	       (DECL_INIT_P (current_function_decl) ?
		IDENTIFIER_POINTER (DECL_NAME (TYPE_NAME (current_class))) :
		IDENTIFIER_POINTER (DECL_NAME (current_function_decl))));
	  }
      }
}

/* Return 1 if checked EXCEPTION is caught at the current nesting level of
   try-catch blocks, OR is listed in the `throws' clause of the
   current method.  */

static int
check_thrown_exceptions_do (exception)
     tree exception;
{
  tree list = currently_caught_type_list;
  resolve_and_layout (exception, NULL_TREE);
  /* First, all the nested try-catch-finally at that stage. The
     last element contains `throws' clause exceptions, if any. */
  if (IS_UNCHECKED_EXCEPTION_P (exception))
    return 1;
  while (list)
    {
      tree caught;
      for (caught = TREE_VALUE (list); caught; caught = TREE_CHAIN (caught))
	if (valid_ref_assignconv_cast_p (exception, TREE_VALUE (caught), 0))
	  return 1;
      list = TREE_CHAIN (list);
    }
  return 0;
}

static void
purge_unchecked_exceptions (mdecl)
     tree mdecl;
{
  tree throws = DECL_FUNCTION_THROWS (mdecl);
  tree new = NULL_TREE;

  while (throws)
    {
      tree next = TREE_CHAIN (throws);
      if (!IS_UNCHECKED_EXCEPTION_P (TREE_VALUE (throws)))
	{
	  TREE_CHAIN (throws) = new;
	  new = throws;
	}
      throws = next;
    }
  /* List is inverted here, but it doesn't matter */
  DECL_FUNCTION_THROWS (mdecl) = new;
}

/* 15.24 Conditional Operator ?: */

static tree
patch_conditional_expr (node, wfl_cond, wfl_op1)
     tree node, wfl_cond, wfl_op1;
{
  tree cond = TREE_OPERAND (node, 0);
  tree op1 = TREE_OPERAND (node, 1);
  tree op2 = TREE_OPERAND (node, 2);
  tree resulting_type = NULL_TREE;
  tree t1, t2, patched;
  int error_found = 0;

  /* Operands of ?: might be StringBuffers crafted as a result of a
     string concatenation. Obtain a descent operand here.  */
  if ((patched = patch_string (op1)))
    TREE_OPERAND (node, 1) = op1 = patched;
  if ((patched = patch_string (op2)))
    TREE_OPERAND (node, 2) = op2 = patched;

  t1 = TREE_TYPE (op1);
  t2 = TREE_TYPE (op2);

  /* The first expression must be a boolean */
  if (TREE_TYPE (cond) != boolean_type_node)
    {
      SET_WFL_OPERATOR (wfl_operator, node, wfl_cond);
      parse_error_context (wfl_operator,
               "Incompatible type for `?:'. Can't convert `%s' to `boolean'",
			   lang_printable_name (TREE_TYPE (cond), 0));
      error_found = 1;
    }

  /* Second and third can be numeric, boolean (i.e. primitive),
     references or null. Anything else results in an error */
  if (!((JNUMERIC_TYPE_P (t1) && JNUMERIC_TYPE_P (t2))
	|| ((JREFERENCE_TYPE_P (t1) || op1 == null_pointer_node) 
	    && (JREFERENCE_TYPE_P (t2) || op2 == null_pointer_node))
	|| (t1 == boolean_type_node && t2 == boolean_type_node)))
    error_found = 1;

  /* Determine the type of the conditional expression. Same types are
     easy to deal with */
  else if (t1 == t2)
    resulting_type = t1;

  /* There are different rules for numeric types */
  else if (JNUMERIC_TYPE_P (t1))
    {
      /* if byte/short found, the resulting type is short */
      if ((t1 == byte_type_node && t2 == short_type_node)
	  || (t1 == short_type_node && t2 == byte_type_node))
	resulting_type = short_type_node;

      /* If t1 is a constant int and t2 is of type byte, short or char
	 and t1's value fits in t2, then the resulting type is t2 */
      else if ((t1 == int_type_node && TREE_CONSTANT (TREE_OPERAND (node, 1)))
	  && JBSC_TYPE_P (t2) && int_fits_type_p (TREE_OPERAND (node, 1), t2))
	resulting_type = t2;

      /* If t2 is a constant int and t1 is of type byte, short or char
	 and t2's value fits in t1, then the resulting type is t1 */
      else if ((t2 == int_type_node && TREE_CONSTANT (TREE_OPERAND (node, 2)))
	  && JBSC_TYPE_P (t1) && int_fits_type_p (TREE_OPERAND (node, 2), t1))
	resulting_type = t1;

      /* Otherwise, binary numeric promotion is applied and the
	 resulting type is the promoted type of operand 1 and 2 */
      else 
	resulting_type = binary_numeric_promotion (t1, t2, 
						   &TREE_OPERAND (node, 1), 
						   &TREE_OPERAND (node, 2));
    }

  /* Cases of a reference and a null type */
  else if (JREFERENCE_TYPE_P (t1) && op2 == null_pointer_node)
    resulting_type = t1;

  else if (JREFERENCE_TYPE_P (t2) && op1 == null_pointer_node)
    resulting_type = t2;

  /* Last case: different reference types. If a type can be converted
     into the other one by assignment conversion, the latter
     determines the type of the expression */
  else if ((resulting_type = try_reference_assignconv (t1, op2)))
    resulting_type = promote_type (t1);

  else if ((resulting_type = try_reference_assignconv (t2, op1)))
    resulting_type = promote_type (t2);

  /* If we don't have any resulting type, we're in trouble */
  if (!resulting_type)
    {
      char *t = xstrdup (lang_printable_name (t1, 0));
      SET_WFL_OPERATOR (wfl_operator, node, wfl_op1);
      parse_error_context (wfl_operator,
		 "Incompatible type for `?:'. Can't convert `%s' to `%s'",
			   t, lang_printable_name (t2, 0));
      free (t);
      error_found = 1;
    }

  if (error_found)
    {
      TREE_TYPE (node) = error_mark_node;
      return error_mark_node;
    }

  TREE_TYPE (node) = resulting_type;
  TREE_SET_CODE (node, COND_EXPR);
  CAN_COMPLETE_NORMALLY (node) = 1;
  return node;
}

/* Try to constant fold NODE.
   If NODE is not a constant expression, return NULL_EXPR.
   CONTEXT is a static final VAR_DECL whose initializer we are folding. */

static tree
fold_constant_for_init (node, context)
     tree node;
     tree context;
{
  tree op0, op1, val;
  enum tree_code code = TREE_CODE (node);

  if (code == STRING_CST)
    return node;

  if (code == INTEGER_CST || code == REAL_CST)
    return convert (TREE_TYPE (context), node);
  if (TREE_TYPE (node) != NULL_TREE && code != VAR_DECL && code != FIELD_DECL)
    return NULL_TREE;

  switch (code)
    {
    case PLUS_EXPR:
    case MINUS_EXPR:
    case MULT_EXPR:
    case TRUNC_MOD_EXPR:
    case RDIV_EXPR:
    case LSHIFT_EXPR:
    case RSHIFT_EXPR:
    case URSHIFT_EXPR:
    case BIT_AND_EXPR:
    case BIT_XOR_EXPR:
    case BIT_IOR_EXPR:
    case TRUTH_ANDIF_EXPR:
    case TRUTH_ORIF_EXPR:
    case EQ_EXPR: 
    case NE_EXPR:
    case GT_EXPR:
    case GE_EXPR:
    case LT_EXPR:
    case LE_EXPR:
      op0 = TREE_OPERAND (node, 0);
      op1 = TREE_OPERAND (node, 1);
      val = fold_constant_for_init (op0, context);
      if (val == NULL_TREE || ! TREE_CONSTANT (val))
	return NULL_TREE;
      TREE_OPERAND (node, 0) = val;
      val = fold_constant_for_init (op1, context);
      if (val == NULL_TREE || ! TREE_CONSTANT (val))
	return NULL_TREE;
      TREE_OPERAND (node, 1) = val;
      return patch_binop (node, op0, op1);

    case UNARY_PLUS_EXPR:
    case NEGATE_EXPR:
    case TRUTH_NOT_EXPR:
    case BIT_NOT_EXPR:
    case CONVERT_EXPR:
      op0 = TREE_OPERAND (node, 0);
      val = fold_constant_for_init (op0, context);
      if (val == NULL_TREE || ! TREE_CONSTANT (val))
	return NULL_TREE;
      TREE_OPERAND (node, 0) = val;
      return patch_unaryop (node, op0);
      break;

    case COND_EXPR:
      val = fold_constant_for_init (TREE_OPERAND (node, 0), context);
      if (val == NULL_TREE || ! TREE_CONSTANT (val))
	return NULL_TREE;
      TREE_OPERAND (node, 0) = val;
      val = fold_constant_for_init (TREE_OPERAND (node, 1), context);
      if (val == NULL_TREE || ! TREE_CONSTANT (val))
	return NULL_TREE;
      TREE_OPERAND (node, 1) = val;
      val = fold_constant_for_init (TREE_OPERAND (node, 2), context);
      if (val == NULL_TREE || ! TREE_CONSTANT (val))
	return NULL_TREE;
      TREE_OPERAND (node, 2) = val;
      return integer_zerop (TREE_OPERAND (node, 0)) ? TREE_OPERAND (node, 1)
	: TREE_OPERAND (node, 2);

    case VAR_DECL:
    case FIELD_DECL:
      if (! FIELD_FINAL (node)
	  || DECL_INITIAL (node) == NULL_TREE)
	return NULL_TREE;
      val = DECL_INITIAL (node);
      /* Guard against infinite recursion. */
      DECL_INITIAL (node) = NULL_TREE;
      val = fold_constant_for_init (val, node);
      DECL_INITIAL (node) = val;
      return val;

    case EXPR_WITH_FILE_LOCATION:
      /* Compare java_complete_tree and resolve_expression_name. */
      if (!EXPR_WFL_NODE (node) /* Or a PRIMARY flag ? */
	  || TREE_CODE (EXPR_WFL_NODE (node)) == IDENTIFIER_NODE)
	{
	  tree name = EXPR_WFL_NODE (node);
	  tree decl;
	  if (PRIMARY_P (node))
	    return NULL_TREE;
	  else if (! QUALIFIED_P (name))
	    {
	      decl = lookup_field_wrapper (DECL_CONTEXT (context), name);
	      if (decl == NULL_TREE 
		  || (! FIELD_STATIC (decl) && ! FIELD_FINAL (decl)))
		return NULL_TREE;
	      return fold_constant_for_init (decl, decl);
	    }
	  else
	    {
	      /* Wait until the USE_COMPONENT_REF re-write.  FIXME. */
	      qualify_ambiguous_name (node);
	      if (resolve_field_access (node, &decl, NULL)
		  && decl != NULL_TREE)
		return fold_constant_for_init (decl, decl);
	      return NULL_TREE;
	    }
	}
      else
	{
	  op0 = TREE_OPERAND (node, 0);
	  val = fold_constant_for_init (op0, context);
	  if (val == NULL_TREE || ! TREE_CONSTANT (val))
	    return NULL_TREE;
	  TREE_OPERAND (node, 0) = val;
	  return val;
	}

#ifdef USE_COMPONENT_REF
    case IDENTIFIER:
    case COMPONENT_REF:
      ?;
#endif

    default:
      return NULL_TREE;
    }
}

#ifdef USE_COMPONENT_REF
/* Context is 'T' for TypeName, 'P' for PackageName,
   'M' for MethodName, 'E' for ExpressionName, and 'A' for AmbiguousName. */

tree
resolve_simple_name (name, context)
     tree name;
     int context;
{
}

tree
resolve_qualified_name (name, context)
     tree name;
     int context;
{
}
#endif
