Various cleanups to help compile server.

	* cppinit.c (cpp_create_reader):  Take extra hash_table* argument,
	and pass that to _cpp_init_hashtable.
	(cpp_read_main_file):  Drop hash_table* argument; don't call
	_cpp_init_hashtable.
	* cpplib.h:  Update declarations to match.
	* c-opts.c (c_common_init_options):  Pass ident_hash to
	cpp_create_reader.
	(c_common_post_options):  Don't pass ident_hash to cpp_read_main_file.
	* fix-header.c (read_scan_file):  Likewise pass NULL table to
	cpp_create_reader rather than cpp_read_main_file.

	* cppfiles.c (cpp_rename_file):  Generalized and renamed
	to cpp_change_file.
	* cpplib.h:  Update declaration to match.
	* c-opts.c (push_command_line_line, finish_options):  Change
	cpp_rename_file calls to cpp_change_file.

From-SVN: r64617

gcc/ChangeLog

@@ -2,6 +2,23 @@
 
 	Various cleanups to help compile server.
 
+	* cppinit.c (cpp_create_reader):  Take extra hash_table* argument,
+	and pass that to _cpp_init_hashtable.
+	(cpp_read_main_file):  Drop hash_table* argument; don't call
+	_cpp_init_hashtable.
+	* cpplib.h:  Update declarations to match.
+	* c-opts.c (c_common_init_options):  Pass ident_hash to
+	cpp_create_reader.
+	(c_common_post_options):  Don't pass ident_hash to cpp_read_main_file.
+	* fix-header.c (read_scan_file):  Likewise pass NULL table to
+	cpp_create_reader rather than cpp_read_main_file.
+
+	* cppfiles.c (cpp_rename_file):  Generalized and renamed
+	to cpp_change_file.
+	* cpplib.h:  Update declaration to match.
+	* c-opts.c (push_command_line_line, finish_options):  Change
+	cpp_rename_file calls to cpp_change_file.
+	
 	* line-map.c (add_line_map):  Allow leaving the outermost file.
 	Allowing entering an outermost-file after the initial time. 
 

gcc/c-opts.c

@@ -587,7 +587,8 @@ c_common_init_options (lang)
 #endif
 
   c_language = lang;
-  parse_in = cpp_create_reader (lang == clk_c ? CLK_GNUC89 : CLK_GNUCXX);
+  parse_in = cpp_create_reader (lang == clk_c ? CLK_GNUC89 : CLK_GNUCXX,
+				ident_hash);
   cpp_opts = cpp_get_options (parse_in);
   if (flag_objc)
     cpp_opts->objc = 1;
@@ -1569,7 +1570,7 @@ c_common_post_options (pfilename)
   cpp_get_callbacks (parse_in)->file_change = cb_file_change;
 
   /* NOTE: we use in_fname here, not the one supplied.  */
-  *pfilename = cpp_read_main_file (parse_in, in_fname, ident_hash);
+  *pfilename = cpp_read_main_file (parse_in, in_fname);
 
   saved_lineno = lineno;
   lineno = 0;
@@ -1784,10 +1785,10 @@ finish_options ()
     {
       size_t i;
 
-      cpp_rename_file (parse_in, _("<built-in>"));
+      cpp_change_file (parse_in, LC_RENAME, _("<built-in>"));
       cpp_init_builtins (parse_in);
       c_cpp_builtins (parse_in);
-      cpp_rename_file (parse_in, _("<command line>"));
+      cpp_change_file (parse_in, LC_RENAME, _("<command line>"));
       for (i = 0; i < deferred_count; i++)
 	{
 	  struct deferred_opt *opt = &deferred_opts[i];
@@ -1837,7 +1838,7 @@ push_command_line_include ()
   if (include_cursor == deferred_count)
     {
       /* Restore the line map from <command line>.  */
-      cpp_rename_file (parse_in, main_input_filename);
+      cpp_change_file (parse_in, LC_RENAME, main_input_filename);
       /* -Wunused-macros should only warn about macros defined hereafter.  */
       cpp_opts->warn_unused_macros = warn_unused_macros;
       include_cursor++;

gcc/cppfiles.c

@@ -756,14 +756,16 @@ cpp_make_system_header (pfile, syshdr, externc)
 		       SOURCE_LINE (pfile->map, pfile->line), flags);
 }
 
-/* Allow the client to rename the current file.  Used by the front end
-   to achieve pseudo-file names like <built-in>.  */
+/* Allow the client to change the current file.  Used by the front end
+   to achieve pseudo-file names like <built-in>.
+   If REASON is LC_LEAVE, then NEW_NAME must be NULL.  */
 void
-cpp_rename_file (pfile, new_name)
+cpp_change_file (pfile, reason, new_name)
      cpp_reader *pfile;
+     enum lc_reason reason;
      const char *new_name;
 {
-  _cpp_do_file_change (pfile, LC_RENAME, new_name, 1, 0);
+  _cpp_do_file_change (pfile, reason, new_name, 1, 0);
 }
 
 /* Report on all files that might benefit from a multiple include guard.

gcc/cppinit.c

@@ -132,8 +132,9 @@ init_library ()
 
 /* Initialize a cpp_reader structure.  */
 cpp_reader *
-cpp_create_reader (lang)
+cpp_create_reader (lang, table)
      enum c_lang lang;
+     hash_table *table;
 {
   cpp_reader *pfile;
 
@@ -199,6 +200,8 @@ cpp_create_reader (lang)
 
   _cpp_init_includes (pfile);
 
+  _cpp_init_hashtable (pfile, table);
+
   return pfile;
 }
 
@@ -429,20 +432,14 @@ cpp_add_dependency_target (pfile, target, quote)
    or stdin if it is the empty string.  Return the original filename
    on success (e.g. foo.i->foo.c), or NULL on failure.  */
 const char *
-cpp_read_main_file (pfile, fname, table)
+cpp_read_main_file (pfile, fname)
      cpp_reader *pfile;
      const char *fname;
-     hash_table *table;
 {
   sanity_checks (pfile);
 
   post_options (pfile);
 
-  /* The front ends don't set up the hash table until they have
-     finished processing the command line options, so initializing the
-     hashtable is deferred until now.  */
-  _cpp_init_hashtable (pfile, table);
-
   /* Mark named operators before handling command line macros.  */
   if (CPP_OPTION (pfile, cplusplus) && CPP_OPTION (pfile, operator_names))
     mark_named_operators (pfile);

gcc/cpplib.h

@@ -485,8 +485,13 @@ struct cpp_hashnode GTY(())
   } GTY ((desc ("0"))) value;
 };
 
-/* Call this first to get a handle to pass to other functions.  */
-extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang));
+/* Call this first to get a handle to pass to other functions.
+
+   If you want cpplib to manage its own hashtable, pass in a NULL
+   pointer.  Otherwise you should pass in an initialized hash table
+   that cpplib will share; this technique is used by the C front
+   ends.  */
+extern cpp_reader *cpp_create_reader PARAMS ((enum c_lang, struct ht *));
 
 /* Call this to change the selected language standard (e.g. because of
    command line options).  */
@@ -518,14 +523,8 @@ extern void cpp_set_callbacks PARAMS ((cpp_reader *, cpp_callbacks *));
    returns the name of the original file; this is the same as the
    input file, except for preprocessed input.  This will generate at
    least one file change callback, and possibly a line change callback
-   too.  If there was an error opening the file, it returns NULL.
-
-   If you want cpplib to manage its own hashtable, pass in a NULL
-   pointer.  Otherwise you should pass in an initialized hash table
-   that cpplib will share; this technique is used by the C front
-   ends.  */
-extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *,
-					       struct ht *));
+   too.  If there was an error opening the file, it returns NULL.  */
+extern const char *cpp_read_main_file PARAMS ((cpp_reader *, const char *));
 
 /* Set up built-ins like __FILE__.  */
 extern void cpp_init_builtins PARAMS ((cpp_reader *));
@@ -708,7 +707,8 @@ extern int cpp_included	PARAMS ((cpp_reader *, const char *));
 extern void cpp_make_system_header PARAMS ((cpp_reader *, int, int));
 extern void cpp_simplify_path PARAMS ((char *));
 extern bool cpp_push_include PARAMS ((cpp_reader *, const char *));
-extern void cpp_rename_file PARAMS ((cpp_reader *, const char *));
+extern void cpp_change_file PARAMS ((cpp_reader *, enum lc_reason,
+				     const char *));
 
 /* In cpppch.c */
 struct save_macro_data;

gcc/fix-header.c

@@ -622,7 +622,7 @@ read_scan_file (in_fname, argc, argv)
 
   obstack_init (&scan_file_obstack);
 
-  scan_in = cpp_create_reader (CLK_GNUC89);
+  scan_in = cpp_create_reader (CLK_GNUC89, NULL);
   cb = cpp_get_callbacks (scan_in);
   cb->file_change = cb_file_change;
 
@@ -632,7 +632,7 @@ read_scan_file (in_fname, argc, argv)
   options->inhibit_warnings = 1;
   options->inhibit_errors = 1;
 
-  if (! cpp_read_main_file (scan_in, in_fname, NULL))
+  if (! cpp_read_main_file (scan_in, in_fname))
     exit (FATAL_EXIT_CODE);
 
   for (i = 0; i < argc; i += strings_processed)
@@ -675,9 +675,9 @@ read_scan_file (in_fname, argc, argv)
 			   true /* stdinc */, false /* cxx_stdinc */,
 			   false /* verbose */);
 
-  cpp_rename_file (scan_in, "<built-in>");
+  cpp_change_file (scan_in, LC_RENAME, "<built-in>");
   cpp_init_builtins (scan_in);
-  cpp_rename_file (scan_in, in_fname);
+  cpp_change_file (scan_in, LC_RENAME, in_fname);
 
   /* We are scanning a system header, so mark it as such.  */
   cpp_make_system_header (scan_in, 1, 0);