c-lex.c: Sync with C++ frontend.

	* c-lex.c: Sync with C++ frontend.
	(linemode): New variable.
	(parse_float): imag, conversion_errno, and type are output only.
	(yylex): Adjust.  Move initial '.' case into main switch.
	Use linemode.
	(handle_generic_pragma): Just deal with tokens.
	(readescape): Use ISXDIGIT and ISGRAPH.
	* c-parse.in: Add END_OF_LINE token.

	* c-lex.c (lang_init): Generalize.
	(nextchar): Remove.  Replace uses with UNGETC.
	(skip_white_space): Handle linemode here.  Optimize for cpplib.
	(skip_white_space_on_line): Remove.
	(extend_token_buffer_to): New fn.
	(extend_token_buffer): Use it.
	(read_line_number, check_newline): Just deal with tokens.
	(token_getch, token_put_back): New fns.
	(yylex): Use them.  More cpplib optimizations.  Simplify.

	* c-lex.c (init_parse): Set cpp_token to CPP_DIRECTIVE.
	(consume_string): Make this smart about USE_CPPLIB.
	(check_newline): Rewrite to be intelligent about USE_CPPLIB.
	(yylex): Rewrite to be intelligent about USE_CPPLIB.
	Also, clean up cases where we redundantly set token_buffer[0].
	(read_line_number): New fn.
	(ignore_escape_flag): New variable.

From-SVN: r28507

1 files changed, 61 insertions, 60 deletions

diff --git a/gcc/c-parse.h b/gcc/c-parse.h
index 838530e..5c9abe0 100644
--- a/gcc/c-parse.h
+++ b/gcc/c-parse.h
@@ -1,65 +1,66 @@
 typedef union {long itype; tree ttype; enum tree_code code;
 	char *filename; int lineno; int ends_in_label; } YYSTYPE;
-#define	IDENTIFIER	257
-#define	TYPENAME	258
-#define	SCSPEC	259
-#define	TYPESPEC	260
-#define	TYPE_QUAL	261
-#define	CONSTANT	262
-#define	STRING	263
-#define	ELLIPSIS	264
-#define	SIZEOF	265
-#define	ENUM	266
-#define	STRUCT	267
-#define	UNION	268
-#define	IF	269
-#define	ELSE	270
-#define	WHILE	271
-#define	DO	272
-#define	FOR	273
-#define	SWITCH	274
-#define	CASE	275
-#define	DEFAULT	276
-#define	BREAK	277
-#define	CONTINUE	278
-#define	RETURN	279
-#define	GOTO	280
-#define	ASM_KEYWORD	281
-#define	TYPEOF	282
-#define	ALIGNOF	283
-#define	ATTRIBUTE	284
-#define	EXTENSION	285
-#define	LABEL	286
-#define	REALPART	287
-#define	IMAGPART	288
-#define	VA_ARG	289
-#define	ASSIGN	290
-#define	OROR	291
-#define	ANDAND	292
-#define	EQCOMPARE	293
-#define	ARITHCOMPARE	294
-#define	LSHIFT	295
-#define	RSHIFT	296
-#define	UNARY	297
-#define	PLUSPLUS	298
-#define	MINUSMINUS	299
-#define	HYPERUNARY	300
-#define	POINTSAT	301
-#define	INTERFACE	302
-#define	IMPLEMENTATION	303
-#define	END	304
-#define	SELECTOR	305
-#define	DEFS	306
-#define	ENCODE	307
-#define	CLASSNAME	308
-#define	PUBLIC	309
-#define	PRIVATE	310
-#define	PROTECTED	311
-#define	PROTOCOL	312
-#define	OBJECTNAME	313
-#define	CLASS	314
-#define	ALIAS	315
-#define	OBJC_STRING	316
+#define	IDENTIFIER	258
+#define	TYPENAME	259
+#define	SCSPEC	260
+#define	TYPESPEC	261
+#define	TYPE_QUAL	262
+#define	CONSTANT	263
+#define	STRING	264
+#define	ELLIPSIS	265
+#define	SIZEOF	266
+#define	ENUM	267
+#define	STRUCT	268
+#define	UNION	269
+#define	IF	270
+#define	ELSE	271
+#define	WHILE	272
+#define	DO	273
+#define	FOR	274
+#define	SWITCH	275
+#define	CASE	276
+#define	DEFAULT	277
+#define	BREAK	278
+#define	CONTINUE	279
+#define	RETURN	280
+#define	GOTO	281
+#define	ASM_KEYWORD	282
+#define	TYPEOF	283
+#define	ALIGNOF	284
+#define	ATTRIBUTE	285
+#define	EXTENSION	286
+#define	LABEL	287
+#define	REALPART	288
+#define	IMAGPART	289
+#define	VA_ARG	290
+#define	END_OF_LINE	291
+#define	ASSIGN	292
+#define	OROR	293
+#define	ANDAND	294
+#define	EQCOMPARE	295
+#define	ARITHCOMPARE	296
+#define	LSHIFT	297
+#define	RSHIFT	298
+#define	UNARY	299
+#define	PLUSPLUS	300
+#define	MINUSMINUS	301
+#define	HYPERUNARY	302
+#define	POINTSAT	303
+#define	INTERFACE	304
+#define	IMPLEMENTATION	305
+#define	END	306
+#define	SELECTOR	307
+#define	DEFS	308
+#define	ENCODE	309
+#define	CLASSNAME	310
+#define	PUBLIC	311
+#define	PRIVATE	312
+#define	PROTECTED	313
+#define	PROTOCOL	314
+#define	OBJECTNAME	315
+#define	CLASS	316
+#define	ALIAS	317
+#define	OBJC_STRING	318
 
 
 extern YYSTYPE yylval;