Represent column numbers using line-map's source_location.

	The "next available source_location" is now managed internally by
	line-maps.c rather than by clients.
	* line-map.h (struct line_map):  New field column_bits.
	<from_line>:  Rename field to start_location.
	(struct line_maps):  New fields highest_location and max_column_hint.
	(linemap_check_files_exited):  New declaration.
	(linemap_line_start):  New declaration.
	(linemap_add):  Remove from_line parameter; use highest_location field.
	(SOURCE_LINE, LAST_SOURCE_LINE):  Modify to use column_bits.
	(SOURCE_COLUMN, LAST_SOURCE_LINE_LOCATION):  New macros.
	(CURRENT_LINE_MAP):  Remove macro.
	(linemap_position_for_column):  New inline function.
	* line-map.c (linemap_init):  Clear new fields.
	(linemap_check_files_exited):  New function, extracted from ...
	(linemap_free):  Use linemap_check_files_exited.
	(linemap_add):  Remove from_line parameter.  Various updates.
	(linemap_line_start):  New function.
	(linemap_lookeup):  Update for new field names.
	* cpphash.h (struct cpp_reader) <map>:  Field removed.  Because
	linemap_position_for_column may unpredictably change the current map,
	it is cleaner and simpler for us to not cache it in cpp_reader.
	(struct cpp_buffer):  New sysp field.
	Changed warned_cplusplus_comments and from_stage3 to bitfields.
	* cppinit.c (cpp_read_min_file):  pfile->map no longer exists.
	* cpplib.c (do_line, do_linemarker, _cpp_do_file_change):  Get
	current map using linemap_lookup.
	(do_linemarker):  Also set buffer's sysp field.
	(destringize_and_run):  No longer need to decrement current line.
	* cppfiles.c (_cpp_stack_file):  Set sysp from and in buffer.
	(search_path_head, open_file_failed):  Use buffer's sysp.
	(cpp_make_system_header):  Get current map using linemap_lookup.
	Also set buffer's sysp flag.
	* cppmacro.c (_cpp_builtin_macro_text):  Likewise use linemap_lookup.
	* cpphash.h (CPP_INCREMENT_LINE):  New macro.
	(struct cpp_buffer):  Moved fields saved_cur, saved_rlimit to ...
	(struct cpp_reader):  ... and adding saved_line_base field.
	* cpptrad.c (_cpp_overlay_buffer, _cpp_remove_overlay):
	Update accordingly.  Don't adjust line.
	(_cpp_scan_out_logical_line):  Use CPP_INCREMENT_LINE.
	* cpphash.c (CPP_IN_SYSTEM_HEADER):  Replaced macro by ...
	(cpp_in_system_header):  ... new inline function, using buffer's sysp.
	* cpperror.c (_cpp_begin_message):  Update to use cpp_in_system_header.
	* cpplex.c (_cpp_lex_direct):  Likewise.
	* cppmacro.c (_cpp_builtin_macro_text):  Likewise.
	* cppmacro.c (_cpp_create_definition):  Use buffer's sysp field.
	* cpplib.h (struct cpp_token):  Rename line field to src_loc.
	Remove col field as it is now subsumed by src_loc.
	* cpperror.c:  Update various field, parameter, and macro names.
	(print_location):  If col==0, try SOURCE_COLUMN of line.
	(cpp_error):  Use cur_token's src_loc field, rather than line+col.
	* cpplib.c (do_diagnostic):  Token's src_loc fields replaces line+col.
	* cpplex.c (_cpp_process_line_notes, _cpp_lex_direct,
	_cpp_skip_block_comment):  Use CPP_INCREMENT_LINE.
	(_cpp_temp_token):  Replace cpp_token's line+col fields by src_loc.
	(_cpp_get_fresh_line):  Don't need to adjust line for missing newline.
	(_cpp_lex_direct):  Use linemap_position_for_column.
	* c-ppoutput.c (maybe_print_line, print_line):  Don't take map
	parameter.  Instead get it from the line_table global.  Adjust callers.
	(print):  Remove map field.  Replace line field to src_line.
	(init_pp_output, account_for_newlines, maybe_print_line):  Adjust.
	(cb_line_change):  Use SOURCE_COLUMN.  Minor optimizations.
	(pp_file_change):  Use MAIN_FILE_P since we cannot checked print.map.
	Use LAST_SOURCE_LINE_LOCATION to "catch up" after #include.
	* cpptrad.c (copy_comment):  Rename variable.
	* c-lex.c (map):  Remove static variable, for same reason we removed
	cpp_reader's map field.
	(cb_line_change, cb_def_pragma, cb_define, cb_undef):  Hence we need
	to call linemap_lookup.
	(cb_line_change):  Token's line field replaced by src_loc.
	(fe_file_change):  Use MAINFILE_P and LAST_SOURCE_LINE macros.
	Don't save new_map.

	* cpphash.h, cpperror.c, cpplib.h:  Some renames of fileline to
	source_location.

From-SVN: r77663

1 files changed, 15 insertions, 18 deletions

diff --git a/gcc/cpplib.c b/gcc/cpplib.c
index fa16859..3165351 100644
--- a/gcc/cpplib.c
+++ b/gcc/cpplib.c
@@ -777,8 +777,9 @@ strtoul_for_line (const uchar *str, unsigned int len, long unsigned int *nump)
 static void
 do_line (cpp_reader *pfile)
 {
+  const struct line_map *map = linemap_lookup (pfile->line_table, pfile->line);
   const cpp_token *token;
-  const char *new_file = pfile->map->to_file;
+  const char *new_file = map->to_file;
   unsigned long new_lineno;
 
   /* C99 raised the minimum limit on #line numbers.  */
@@ -816,7 +817,7 @@ do_line (cpp_reader *pfile)
 
   skip_rest_of_line (pfile);
   _cpp_do_file_change (pfile, LC_RENAME, new_file, new_lineno,
-		       pfile->map->sysp);
+		       map->sysp);
 }
 
 /* Interpret the # 44 "file" [flags] notation, which has slightly
@@ -825,10 +826,11 @@ do_line (cpp_reader *pfile)
 static void
 do_linemarker (cpp_reader *pfile)
 {
+  const struct line_map *map = linemap_lookup (pfile->line_table, pfile->line);
   const cpp_token *token;
-  const char *new_file = pfile->map->to_file;
+  const char *new_file = map->to_file;
   unsigned long new_lineno;
-  unsigned int new_sysp = pfile->map->sysp;
+  unsigned int new_sysp = map->sysp;
   enum lc_reason reason = LC_RENAME;
   int flag;
 
@@ -876,6 +878,7 @@ do_linemarker (cpp_reader *pfile)
 	  flag = read_flag (pfile, flag);
 	  if (flag == 4)
 	    new_sysp = 2;
+	  pfile->buffer->sysp = new_sysp;
 	}
 
       check_eol (pfile);
@@ -900,11 +903,15 @@ _cpp_do_file_change (cpp_reader *pfile, enum lc_reason reason,
 		     const char *to_file, unsigned int file_line,
 		     unsigned int sysp)
 {
-  pfile->map = linemap_add (pfile->line_table, reason, sysp,
-			    pfile->line, to_file, file_line);
+  const struct line_map *map = linemap_add (pfile->line_table, reason, sysp,
+					    to_file, file_line);
+  if (map == NULL)
+    pfile->line = 0;
+  else
+    pfile->line = linemap_line_start (pfile->line_table, map->to_line, 127);
 
   if (pfile->cb.file_change)
-    pfile->cb.file_change (pfile, pfile->map);
+    pfile->cb.file_change (pfile, map);
 }
 
 /* Report a warning or error detected by the program we are
@@ -912,9 +919,7 @@ _cpp_do_file_change (cpp_reader *pfile, enum lc_reason reason,
 static void
 do_diagnostic (cpp_reader *pfile, int code, int print_dir)
 {
-  if (_cpp_begin_message (pfile, code,
-			  pfile->cur_token[-1].line,
-			  pfile->cur_token[-1].col))
+  if (_cpp_begin_message (pfile, code, pfile->cur_token[-1].src_loc, 0))
     {
       if (print_dir)
 	fprintf (stderr, "#%s ", pfile->directive->name);
@@ -1340,7 +1345,6 @@ destringize_and_run (cpp_reader *pfile, const cpp_string *in)
     pfile->context = saved_context;
     pfile->cur_token = saved_cur_token;
     pfile->cur_run = saved_cur_run;
-    pfile->line--;
   }
 
   /* See above comment.  For the moment, we'd like
@@ -1903,13 +1907,6 @@ cpp_get_callbacks (cpp_reader *pfile)
   return &pfile->cb;
 }
 
-/* The line map set.  */
-const struct line_maps *
-cpp_get_line_maps (cpp_reader *pfile)
-{
-  return pfile->line_table;
-}
-
 /* Copy the given callbacks structure to our own.  */
 void
 cpp_set_callbacks (cpp_reader *pfile, cpp_callbacks *cb)