* parser.c (cp_parser_default_type_template_argument)

	(cp_parser_default_template_template_argument): Factor out from
	cp_parser_type_parameter.

From-SVN: r225620

gcc/cp/ChangeLog

+2015-07-09  Andrew Sutton  <andrew.n.sutton@gmail.com>
+
+	* parser.c (cp_parser_default_type_template_argument)
+	(cp_parser_default_template_template_argument): Factor out from
+	cp_parser_type_parameter.
+
 2015-07-09  Paolo Carlini  <paolo.carlini@oracle.com>
 
 	* typeck.c (warn_args_num): Rename to error_args_num.

gcc/cp/parser.c

@@ -13330,6 +13330,69 @@ cp_parser_template_parameter_list (cp_parser* parser)
   return end_template_parm_list (parameter_list);
 }
 
+/* Parse a default argument for a type template-parameter.
+   Note that diagnostics are handled in cp_parser_template_parameter.  */
+
+static tree
+cp_parser_default_type_template_argument (cp_parser *parser)
+{
+  gcc_assert (cp_lexer_next_token_is (parser->lexer, CPP_EQ));
+
+  /* Consume the `=' token.  */
+  cp_lexer_consume_token (parser->lexer);
+
+  /* Parse the default-argument.  */
+  push_deferring_access_checks (dk_no_deferred);
+  tree default_argument = cp_parser_type_id (parser);
+  pop_deferring_access_checks ();
+
+  return default_argument;
+}
+
+/* Parse a default argument for a template template-parameter.  */
+
+static tree
+cp_parser_default_template_template_argument (cp_parser *parser)
+{
+  gcc_assert (cp_lexer_next_token_is (parser->lexer, CPP_EQ));
+
+  bool is_template;
+
+  /* Consume the `='.  */
+  cp_lexer_consume_token (parser->lexer);
+  /* Parse the id-expression.  */
+  push_deferring_access_checks (dk_no_deferred);
+  /* save token before parsing the id-expression, for error
+     reporting */
+  const cp_token* token = cp_lexer_peek_token (parser->lexer);
+  tree default_argument
+    = cp_parser_id_expression (parser,
+                               /*template_keyword_p=*/false,
+                               /*check_dependency_p=*/true,
+                               /*template_p=*/&is_template,
+                               /*declarator_p=*/false,
+                               /*optional_p=*/false);
+  if (TREE_CODE (default_argument) == TYPE_DECL)
+    /* If the id-expression was a template-id that refers to
+       a template-class, we already have the declaration here,
+       so no further lookup is needed.  */
+    ;
+  else
+    /* Look up the name.  */
+    default_argument
+      = cp_parser_lookup_name (parser, default_argument,
+                               none_type,
+                               /*is_template=*/is_template,
+                               /*is_namespace=*/false,
+                               /*check_dependency=*/true,
+                               /*ambiguous_decls=*/NULL,
+                               token->location);
+  /* See if the default argument is valid.  */
+  default_argument = check_template_template_default_arg (default_argument);
+  pop_deferring_access_checks ();
+  return default_argument;
+}
+
 /* Parse a template-parameter.
 
    template-parameter:
@@ -13552,11 +13615,8 @@ cp_parser_type_parameter (cp_parser* parser, bool *is_parameter_pack)
 	/* If the next token is an `=', we have a default argument.  */
 	if (cp_lexer_next_token_is (parser->lexer, CPP_EQ))
 	  {
-	    /* Consume the `=' token.  */
-	    cp_lexer_consume_token (parser->lexer);
-	    /* Parse the default-argument.  */
-	    push_deferring_access_checks (dk_no_deferred);
-	    default_argument = cp_parser_type_id (parser);
+	    default_argument
+	      = cp_parser_default_type_template_argument (parser);
 
             /* Template parameter packs cannot have default
                arguments. */
@@ -13574,7 +13634,6 @@ cp_parser_type_parameter (cp_parser* parser, bool *is_parameter_pack)
               }
 	    else if (check_for_bare_parameter_packs (default_argument))
 	      default_argument = error_mark_node;
-	    pop_deferring_access_checks ();
 	  }
 	else
 	  default_argument = NULL_TREE;
@@ -13632,40 +13691,8 @@ cp_parser_type_parameter (cp_parser* parser, bool *is_parameter_pack)
 	   default-argument.  */
 	if (cp_lexer_next_token_is (parser->lexer, CPP_EQ))
 	  {
-	    bool is_template;
-
-	    /* Consume the `='.  */
-	    cp_lexer_consume_token (parser->lexer);
-	    /* Parse the id-expression.  */
-	    push_deferring_access_checks (dk_no_deferred);
-	    /* save token before parsing the id-expression, for error
-	       reporting */
-	    token = cp_lexer_peek_token (parser->lexer);
-	    default_argument
-	      = cp_parser_id_expression (parser,
-					 /*template_keyword_p=*/false,
-					 /*check_dependency_p=*/true,
-					 /*template_p=*/&is_template,
-					 /*declarator_p=*/false,
-					 /*optional_p=*/false);
-	    if (TREE_CODE (default_argument) == TYPE_DECL)
-	      /* If the id-expression was a template-id that refers to
-		 a template-class, we already have the declaration here,
-		 so no further lookup is needed.  */
-		 ;
-	    else
-	      /* Look up the name.  */
-	      default_argument
-		= cp_parser_lookup_name (parser, default_argument,
-					 none_type,
-					 /*is_template=*/is_template,
-					 /*is_namespace=*/false,
-					 /*check_dependency=*/true,
-					 /*ambiguous_decls=*/NULL,
-					 token->location);
-	    /* See if the default argument is valid.  */
 	    default_argument
-	      = check_template_template_default_arg (default_argument);
+	      = cp_parser_default_template_template_argument (parser);
 
             /* Template parameter packs cannot have default
                arguments. */
@@ -13681,7 +13708,6 @@ cp_parser_type_parameter (cp_parser* parser, bool *is_parameter_pack)
 			    "have default arguments");
                 default_argument = NULL_TREE;
               }
-	    pop_deferring_access_checks ();
 	  }
 	else
 	  default_argument = NULL_TREE;