r268807 - in /branches/c++-coroutines: ChangeLo...

[iains@gcc.gnu.org]

Author: iains
Date: Tue Feb 12 17:09:01 2019
New Revision: 268807

URL: https://gcc.gnu.org/viewcvs?rev=268807&root=gcc&view=rev
Log:
c++-coroutines - Implement parse of co_await.

This includes testing for the promise await_transform, but not the
use of the co_await() operator yet.

2019-02-12  Iain Sandoe  <iain@sandoe.co.uk>

	gcc/cp/
	* constexpr.c (potential_constant_expression_1): Declare that co_await
	and co_yield expressions are not candidates for constexpr.
	* coroutines.cc: Reorganise text to put the parser-related functions
	together.  Rename co_await_context_valid_p to finish_co_await_expr.
	(finish_co_await_expr): Perform the check for p.await_transform().
	Use the common build_co_await() to complete the build.
	* cp-tree.h: Rename co_await_context_valid_p to finish_co_await_expr.
	* parser.c (cp_parser_unary_expression): Use finish_co_await_expr in
	place of the temporary parse.


Modified:
    branches/c++-coroutines/ChangeLog.coroutines
    branches/c++-coroutines/gcc/cp/constexpr.c
    branches/c++-coroutines/gcc/cp/coroutines.cc
    branches/c++-coroutines/gcc/cp/cp-tree.h
    branches/c++-coroutines/gcc/cp/parser.c