stringpool.c (set_identifier): New function.

	* stringpool.c (set_identifier): New function.
	* tree.h: Prototype it.

	* c-parse.in: Kill D_YES. If compiled for objc, call
	save_and_forget_protocol_qualifiers from init_reswords.
	* objc/objc-act.c (remember_protocol_qualifiers,
	forget_protocol_qualifiers): Don't diddle C_IS_RESERVED_WORD.
	Swap out the non-keyword IDENTIFIER_NODEs for keyword ones, or
	vice versa.
	(save_and_forget_protocol_qualifiers): New function.
	* c-lex.h: Prototype save_and_forget_protocol_qualifiers.

From-SVN: r40170

1 files changed, 19 insertions, 0 deletions

diff --git a/gcc/stringpool.c b/gcc/stringpool.c
index ceb454d..f5e8968 100644
--- a/gcc/stringpool.c
+++ b/gcc/stringpool.c
@@ -340,6 +340,25 @@ maybe_get_identifier (text)
   return NULL_TREE;
 }
 
+/* Look up an identifier with the name TEXT, replace its identifier
+   node with NODE, and return the old identifier node.  This is used
+   by languages which need to enable and disable keywords based on
+   context; e.g. see remember_protocol_qualifiers in objc/objc-act.c.  */
+tree
+set_identifier (text, node)
+     const char *text;
+     tree node;
+{
+  struct str_header *str;
+  tree old;
+  size_t length = strlen (text);
+
+  str = alloc_string (text, length, INSERT);
+  old = str->data;	/* might be null */
+  str->data = node;
+  return old;
+}
+
 /* Report some basic statistics about the string pool.  */
 
 void