From e8ef82d74f40e216b3a1c9707a79a3bd0b6c953d Mon Sep 17 00:00:00 2001 From: Iain Sandoe Date: Wed, 31 Dec 2014 13:58:16 +0000 Subject: Allow Objective-c++ to recognise lambdas. gcc/cp: * parser.c (cp_parser_primary_expression): If parsing an objective-c++ message expression fails, see if a lambda is present. (cp_parser_objc_message_receiver): Don't assume that, if a message receiver expression fails, it is a hard error. gcc/testsuite: * obj-c++.dg/lambda-0.mm New. * obj-c++.dg/lambda-1.mm New. * obj-c++.dg/syntax-error-6.mm Adjust for revised error messages. From-SVN: r219125 --- gcc/cp/parser.c | 21 +++++++++++++++++---- 1 file changed, 17 insertions(+), 4 deletions(-) (limited to 'gcc/cp/parser.c') diff --git a/gcc/cp/parser.c b/gcc/cp/parser.c index 2af1576..68940aa 100644 --- a/gcc/cp/parser.c +++ b/gcc/cp/parser.c @@ -4442,10 +4442,17 @@ cp_parser_primary_expression (cp_parser *parser, } case CPP_OPEN_SQUARE: - if (c_dialect_objc ()) - /* We have an Objective-C++ message. */ - return cp_parser_objc_expression (parser); { + if (c_dialect_objc ()) + { + /* We might have an Objective-C++ message. */ + cp_parser_parse_tentatively (parser); + tree msg = cp_parser_objc_message_expression (parser); + /* If that works out, we're done ... */ + if (cp_parser_parse_definitely (parser)) + return msg; + /* ... else, fall though to see if it's a lambda. */ + } tree lam = cp_parser_lambda_expression (parser); /* Don't warn about a failed tentative parse. */ if (cp_parser_error_occurred (parser)) @@ -25657,14 +25664,20 @@ cp_parser_objc_message_receiver (cp_parser* parser) cp_parser_parse_tentatively (parser); rcv = cp_parser_expression (parser); + /* If that worked out, fine. */ if (cp_parser_parse_definitely (parser)) return rcv; + cp_parser_parse_tentatively (parser); rcv = cp_parser_simple_type_specifier (parser, /*decl_specs=*/NULL, CP_PARSER_FLAGS_NONE); - return objc_get_class_reference (rcv); + if (cp_parser_parse_definitely (parser)) + return objc_get_class_reference (rcv); + + cp_parser_error (parser, "objective-c++ message receiver expected"); + return error_mark_node; } /* Parse the arguments and selectors comprising an Objective-C message. -- cgit v1.1