r262229 - in /branches/c++-modules: ChangeLog.m...

[nathan@gcc.gnu.org]

Author: nathan
Date: Thu Jun 28 19:07:07 2018
New Revision: 262229

URL: https://gcc.gnu.org/viewcvs?rev=262229&root=gcc&view=rev
Log:
	(Beginnings of) Include diversion.
	gcc/c-family/
	* c-opts.c (c_common_post_options): Set divert_include hook.
	(cb_file_change): Fixup precedence.
	gcc/cp/
	* cp-lang.c (LANG_HOOKS_PREPROCESS_DIVERT_INCLUDE): Override.
	* cp-tree.h (modules_header_p): New.
	(atom_divert_include): Declare.
	* cxx-mapper.cc (flag_fallback): New flag.
	(module2bmi): Deal with NULL names.
	(buffer::get_request): Fix off-by-one error.
	(read_mapping_file): Can be multiply called.  Target file name can
	be null.
	(client::action): Deal with INCLUDE.
	(main): There can be may files after connection.  Fixup networking
	errors.
	* lex.c (atom_preamble_prefix_peek): Don't rescan legacy header
	module.
	* module.c (module_preamble_end_loc): Declare here.
	(module_mapper::module_mapper): Prepend path for anything looking
	defaulty.
	(module_mapper::divert_include): New.
	(do_divert_include): New.
	(atom_divert_include): New.
	(init_module_processing): Set header mode here.
	* parser.c (module_preamble_end_loc): Extern.
	gcc/
	* doc/invoke.text (C++ Modules): Document -fmodule-header.
	* langhooks-def.h (LANG_HOOKS_PREPROCESS_DIVERT_INCLUDE): Provide
	default.
	* langhooks.h (lang_hooks): Add preprocess_divert_include.
	libcpp/
	* directives.c (do_include_common): Add diversion smarts.
	* include/cpplib.h (cpp_divert_include_t): New.
	(struct cpp_callbacks): Add divert_include.
	* line-map.c (linemap_module_loc): Missed commit.
	gcc/testsuite/
	* g++.dg/modules/legacy-2.*: New.
	* g++.dg/modules/modules.exp: Fixup header compilation.

Added:
    branches/c++-modules/gcc/testsuite/g++.dg/modules/legacy-2.h
    branches/c++-modules/gcc/testsuite/g++.dg/modules/legacy-2.map
    branches/c++-modules/gcc/testsuite/g++.dg/modules/legacy-2_a.H
    branches/c++-modules/gcc/testsuite/g++.dg/modules/legacy-2_b.H
    branches/c++-modules/gcc/testsuite/g++.dg/modules/legacy-2_c.C
    branches/c++-modules/gcc/testsuite/g++.dg/modules/legacy-2_d.C
Modified:
    branches/c++-modules/ChangeLog.modules
    branches/c++-modules/gcc/c-family/c-opts.c
    branches/c++-modules/gcc/cp/cp-lang.c
    branches/c++-modules/gcc/cp/cp-tree.h
    branches/c++-modules/gcc/cp/cxx-mapper.cc
    branches/c++-modules/gcc/cp/lex.c
    branches/c++-modules/gcc/cp/module.c
    branches/c++-modules/gcc/cp/parser.c
    branches/c++-modules/gcc/doc/invoke.texi
    branches/c++-modules/gcc/langhooks-def.h
    branches/c++-modules/gcc/langhooks.h
    branches/c++-modules/gcc/testsuite/g++.dg/modules/modules.exp
    branches/c++-modules/libcpp/directives.c
    branches/c++-modules/libcpp/files.c
    branches/c++-modules/libcpp/include/cpplib.h
    branches/c++-modules/libcpp/line-map.c