Centralize yacc interface names remapping (yyparse, yylex, yyerror, etc)

This factors out all the yy-variables remapping to a single file,
instead of each parser having to do the same, with different prefixes.

With this, a parser just needs to define the prefix they want and
include yy-remap.h, which does the dirty job.

Note this renames the c_error, ada_error, etc. functions.  Writing the
remapping pattern as:

 #define yyerror GDB_YY_REMAP (error)

instead of:

 #define yyerror GDB_YY_REMAP (yyerror)

would have avoided the renaming.  However, that would be problematic
if we have a macro 'foo' in scope, when we write:

 #define yyfoo GDB_YY_REMAP (foo)

as that would expand 'foo'.

The c_yyerror etc. naming end ups indicating that this is a yacc
related function more clearly, so feels like a good change, anyway.

gdb/ChangeLog:
2016-04-22  Pedro Alves  <palves@redhat.com>

	* ada-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* ada-lang.c (ada_language_defn): Adjust.
	* ada-lang.h (ada_error): Rename to ...
	(ada_yyerror): ... this.
	* c-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* c-lang.c (c_language_defn, cplus_language_defn)
	(asm_language_defn, minimal_language_defn): Adjust.
	* c-lang.h (c_error): Rename to ...
	(c_yyerror): ... this.
	* d-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* d-lang.c (d_language_defn): Adjust.
	* d-lang.h (d_error): Rename to ...
	(d_yyerror): ... this.
	* f-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* f-lang.c (f_language_defn): Adjust.
	* f-lang.h (f_error): Rename to ...
	(f_yyerror): ... this.
	* go-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* go-lang.c (go_language_defn): Adjust.
	* go-lang.h (go_error): Rename to ...
	(go_yyerror): ... this.
	* jv-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* jv-lang.c (java_language_defn): Adjust.
	* jv-lang.h (java_error): Rename to ...
	(java_yyerror): ... this.
	* m2-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* m2-lang.c (m2_language_defn): Adjust.
	* m2-lang.h (m2_error): Rename to ...
	(m2_yyerror): ... this.
	* objc-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* objc-lang.c (objc_language_defn): Adjust.
	* opencl-lang.c (opencl_language_defn): Adjust.
	* p-exp.y: Remove all yy symbol remappings.
	(GDB_YY_REMAP_PREFIX): Define.
	Include "yy-remap.h".
	* p-lang.c (pascal_language_defn): Adjust.
	* p-lang.h (pascal_error): Rename to ...
	(pascal_yyerror): ... this.
	* yy-remap.h: New file.

1 files changed, 4 insertions, 56 deletions

diff --git a/gdb/ada-exp.y b/gdb/ada-exp.y
index a98bdbc..0a33e10 100644
--- a/gdb/ada-exp.y
+++ b/gdb/ada-exp.y
@@ -50,62 +50,10 @@
 
 #define parse_type(ps) builtin_type (parse_gdbarch (ps))
 
-/* Remap normal yacc parser interface names (yyparse, yylex, yyerror, etc),
-   as well as gratuitiously global symbol names, so we can have multiple
-   yacc generated parsers in gdb.  These are only the variables
-   produced by yacc.  If other parser generators (bison, byacc, etc) produce
-   additional global names that conflict at link time, then those parser
-   generators need to be fixed instead of adding those names to this list.  */
-
-/* NOTE: This is clumsy, especially since BISON and FLEX provide --prefix
-   options.  I presume we are maintaining it to accommodate systems
-   without BISON?  (PNH) */
-
-#define	yymaxdepth ada_maxdepth
-/* ada_parse calls this after initialization */
-#define	yyparse	ada_parse_internal
-#define	yylex	ada_lex
-#define	yyerror	ada_error
-#define	yylval	ada_lval
-#define	yychar	ada_char
-#define	yydebug	ada_debug
-#define	yypact	ada_pact
-#define	yyr1	ada_r1
-#define	yyr2	ada_r2
-#define	yydef	ada_def
-#define	yychk	ada_chk
-#define	yypgo	ada_pgo
-#define	yyact	ada_act
-#define	yyexca	ada_exca
-#define yyerrflag ada_errflag
-#define yynerrs	ada_nerrs
-#define	yyps	ada_ps
-#define	yypv	ada_pv
-#define	yys	ada_s
-#define	yy_yys	ada_yys
-#define	yystate	ada_state
-#define	yytmp	ada_tmp
-#define	yyv	ada_v
-#define	yy_yyv	ada_yyv
-#define	yyval	ada_val
-#define	yylloc	ada_lloc
-#define yyreds	ada_reds		/* With YYDEBUG defined */
-#define yytoks	ada_toks		/* With YYDEBUG defined */
-#define yyname	ada_name		/* With YYDEBUG defined */
-#define yyrule	ada_rule		/* With YYDEBUG defined */
-#define yydefred ada_yydefred
-#define yyss	ada_yyss
-#define yysslim	ada_yysslim
-#define yyssp	ada_yyssp
-#define yystacksize ada_yystacksize
-#define yyvs	ada_yyvs
-#define yyvsp	ada_yyvsp
-
-#ifndef YYDEBUG
-#define	YYDEBUG	1		/* Default to yydebug support */
-#endif
-
-#define YYFPRINTF parser_fprintf
+/* Remap normal yacc parser interface names (yyparse, yylex, yyerror,
+   etc).  */
+#define GDB_YY_REMAP_PREFIX ada_
+#include "yy-remap.h"
 
 struct name_info {
   struct symbol *sym;