gengtype-parse.c: New file.

	* gengtype-parse.c: New file.
	* gengtype-yacc.y: Delete.
	* gengtype-lex.l: Don't include gengtype-yacc.h.
	Define YY_DECL and yyterminate appropriately for recursive
	descent parser.  yylval is now a string out-parameter to yylex.
	(HWS, EOID): New shorthand.
	(IWORD): Add a couple more types.
	(yylex): Add a setup stanza.  Remove the complex rules for
	detecting GTY'ed types and typedefs; replace with simple
	keyword detectors.  Adjust everything for the changed
	definition of yylval.  Ignore all pp-directives, not just #define.
	(yyerror): Delete.
	(parse_file): Rename yybegin; do not call yyparse.
	(yyend): New.
	* gengtype.c (xasprintf): Export again.
	(this_file): New.  Use everywhere __FILE__ was being used.
	(get_lang_bitmap): Special case types defined in gengtype.c.
	(do_typedef, new_structure): Suppress definition of certain types.
	(new_structure): Improve diagnostics of duplicate definitions.
	Make sure location_s is associated with input.h.
	(nreverse_pairs, define_location_structures): New functions.
	(main): Improve tagging of kludge types.  Remove old kludges
	for input.h types; use define_location_structures.
	* gengtype.h: Update prototypes.  Define token codes here.
	* Makefile.in: Remove all references to gengtype-yacc.
	Add rules for gengtype-parse.o.  Adjust rules for gengtype-lex.o
	and gengtype.
	* bitmap.h (struct bitmap_head_def): Coalesce definitions,
	add GTY((skip)) to the field that's only conditionally there.
	* doc/install.texi: Document that Bison is no longer required
	unless building treelang.

From-SVN: r123235

1 files changed, 43 insertions, 4 deletions

diff --git a/gcc/gengtype.h b/gcc/gengtype.h
index 345d80d9022..a23e2778e93 100644
--- a/gcc/gengtype.h
+++ b/gcc/gengtype.h
@@ -41,6 +41,9 @@ extern struct fileloc lexer_line;
 extern void error_at_line 
   (struct fileloc *pos, const char *msg, ...) ATTRIBUTE_PRINTF_2;
 
+/* Like asprintf, but calls fatal() on out of memory.  */
+extern char *xasprintf(const char *, ...) ATTRIBUTE_PRINTF_1;
+
 /* Constructor routines for types.  */
 extern void do_typedef (const char *s, type_p t, struct fileloc *pos);
 extern void do_scalar_typedef (const char *s, struct fileloc *pos);
@@ -57,6 +60,7 @@ extern options_p create_nested_ptr_option (options_p, type_p t,
 					   const char *from, const char *to);
 extern pair_p create_field_at (pair_p next, type_p type, const char *name,
 			       options_p opt, struct fileloc *pos);
+extern pair_p nreverse_pairs (pair_p list);
 extern type_p adjust_field_type (type_p, options_p);
 extern void note_variable (const char *s, type_p t, options_p o,
 			   struct fileloc *pos);
@@ -65,10 +69,45 @@ extern void note_def_vec (const char *typename, bool is_scalar,
 extern void note_def_vec_alloc (const char *type, const char *astrat,
 				struct fileloc *pos);
 
-/* Lexer and parser routines, most automatically generated.  */
-extern int yylex (void);
-extern void yyerror (const char *);
-extern int yyparse (void);
+/* Lexer and parser routines.  */
+extern int yylex (const char **yylval);
+extern void yybegin (const char *fname);
+extern void yyend (void);
 extern void parse_file (const char *name);
+extern bool hit_error;
+
+/* Token codes.  */
+enum {
+  EOF_TOKEN = 0,
+
+  /* Per standard convention, codes in the range (0, UCHAR_MAX]
+     represent single characters with those character codes.  */
 
+  CHAR_TOKEN_OFFSET = UCHAR_MAX + 1,
+  GTY_TOKEN = CHAR_TOKEN_OFFSET,
+  TYPEDEF,
+  EXTERN,
+  STATIC,
+  UNION,
+  STRUCT,
+  ENUM,
+  VEC_TOKEN,
+  DEFVEC_OP,
+  DEFVEC_I,
+  DEFVEC_ALLOC,
+  ELLIPSIS,
+  PTR_ALIAS,
+  NESTED_PTR,
+  PARAM_IS,
+  NUM,
+  SCALAR,
+  ID,
+  STRING,
+  CHAR,
+  ARRAY,
+
+  /* print_token assumes that any token >= FIRST_TOKEN_WITH_VALUE may have
+     a meaningful value to be printed.  */
+  FIRST_TOKEN_WITH_VALUE = PARAM_IS
+};
 #endif