r262183 - in /branches/c++-modules: ChangeLog.m...

[nathan@gcc.gnu.org]

Author: nathan
Date: Wed Jun 27 12:05:47 2018
New Revision: 262183

URL: https://gcc.gnu.org/viewcvs?rev=262183&root=gcc&view=rev
Log:
	(Beginnings of) Legacy header modules
	libcpp/
	* line-map.c (linemap_module_loc): Expect ordinary loc.
	gcc/
	* langhooks-def.h (LANG_HOOKS_PREPROCESS_MAIN_FILE): Provide
	default.
	* langhooks.h (lang_hooks): Add preprocess_main_file hook.
	gcc/c-family/
	* c-opts.c (cb_file_change): Call new hook.
	gcc/cp/
	* cp-tree.h (enum atom_preamble_state): Define.
	(atom_preamble_prefix_{peek,next}): Use enum.
	(atom_main_file, maybe_atom_legacy_module): Declare.
	* cxx-mapper.cc (module2bmi): Munge legacy module chars.
	* lang-specs.h (@c++-header): Fix -fmodule-header use.
	* lex.c (atom_preamble_prefix_{peek,next}): Adjust for enum.
	* module.c (prefix_line_maps_hwm, prefix_locations_hwm): New.
	(module_state::{read,write,prepare}_locations): Adjust prefix checking.
	(ordinary_loc_of): New.
	(import_module): Use it.
	(declare_module): Set preamble prefix if needed.
	(atom_main_file, maybe_atom_legacy_module): New.
	(init_module_processing): Don't default module_header_name here.
	(atom_module_preamble, finish_module): Push & pop exporting state in
	legacy mode.
	* parser.c (cp_parser_get_module_preamble_tokens): Adjust for
	preamble state.  Return indicator of preamble contents.
	(c_parse_file): Maybe inject legacy module decl.
	* cp-lang.c (LANG_HOOKS_PREPROCESS_MAIN_FILE): Override hook.
	(atom_preamble_fsm): Adjust for state enum.

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/lang-specs.h
    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/langhooks-def.h
    branches/c++-modules/gcc/langhooks.h
    branches/c++-modules/libcpp/line-map.c