2001-08-01 Ziemowit Laski <zlaski@apple.com>

2001-08-01  Ziemowit Laski  <zlaski@apple.com>

        * c-parse.in (OBJC_NEED_RAW_IDENTIFIER): Define macro and flag for
	contextualizing Objective-C class name lookup by the lexer.
	(typespec_reserved_nonattr): Disable ObjC class name lookup after
	seeing a TYPESPEC.
	(protocoldef): Add support for forward @protocol declarations.
	(yylexname): Suppress ObjC class name lookup in certain contexts;
	re-enable after lookup is complete.
	(_yylex): Re-enable ObjC class name lookup when certain
	punctuation marks are seen.

	* objc/objc-act.c (check_protocol_recursively): New function used
	for finding circular dependencies in protocols.
	(objc_declare_protocols): New function for handling forward
	@protocol declarations.
	(receiver_is_class_object): Detect the case when 'self' is used
	inside of a class method.
	(build_message_expr): Issue a warning if class method is desired
	but instance method is found instead.
	(conforms_to_protocol): Streamline.
	(objc_comptypes): Detect the fact that 'Bar<Foo> foo' conforms to
	protocol Foo, even if 'Bar foo' does not.
	(check_protocols): Streamline.
	(start_protocol): Add checks for circular and duplicate protocol
	definitions.
	(encode_aggregate_within): For typedefs of structs, encode the
	underlying struct.
	* objc/objc-act.h (PROTOCOL_DEFINED): New tree accessor.
	(objc_declare_protocols): New prototype.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@44536 138bc75d-0d04-0410-961f-82ee72b054a4