cp-tree.h (current_tempalte_parms): Improve documentation.

	* cp-tree.h (current_tempalte_parms): Improve documentation.
	* pt.c (current_template_args): Likewise.

From-SVN: r123153

gcc/cp/ChangeLog

 2007-03-22  Mark Mitchell  <mark@codesourcery.com>
 
+	* cp-tree.h (current_tempalte_parms): Improve documentation.
+	* pt.c (current_template_args): Likewise.
+
 	PR c++/30863
 	* parser.c (cp_parser_parse_and_diagnose_invalid_type_name): Do
 	not consume tokens when failing.

gcc/cp/cp-tree.h

@@ -742,8 +742,12 @@ struct saved_scope GTY(())
 #define current_lang_base scope_chain->lang_base
 #define current_lang_name scope_chain->lang_name
 
-/* Parsing a function declarator leaves a list of parameter names
-   or a chain or parameter decls here.  */
+/* When parsing a template declaration, a TREE_LIST representing the
+   active template parametesr.  Each node in the list represents one
+   level of template parameters.  The innermost level is first in the
+   list.  The depth of each level is stored as an INTEGER_CST in the
+   TREE_PURPOSE of each node.  The parameters for that level are
+   stored in the TREE_VALUE.  */
 
 #define current_template_parms scope_chain->template_parms
 

gcc/cp/pt.c

@@ -2991,8 +2991,10 @@ end_template_decl (void)
   current_template_parms = TREE_CHAIN (current_template_parms);
 }
 
-/* Given a template argument vector containing the template PARMS.
-   The innermost PARMS are given first.  */
+/* Within the declaration of a template, return all levels of template
+   parameters that apply.  The template parameters are represented as
+   a TREE_VEC, in the form documented in cp-tree.h for template
+   arguments.  */
 
 static tree
 current_template_args (void)