Add non-RCS files from /gd/gnu/bison.

[bison.git] / src / bison.simple

diff --git a/src/bison.simple b/src/bison.simple
index e3bcfb6d2746b541223e08924d318c88e0d6e291..529fa777f0f332f280901c5464415acccef6479a 100644 (file)
--- a/src/bison.simple
+++ b/src/bison.simple
@@ -1,5 +1,6 @@
 /* -*-C-*-  Note some compilers choke on comments on `#line' lines.  */
 #line 3 "bison.simple"
+/* This file comes from bison-@bison_version@.  */
 
 /* Skeleton output parser for bison,
    Copyright (C) 1984, 1989, 1990 Free Software Foundation, Inc.
@@ -28,42 +29,53 @@
   It was written by Richard Stallman by simplifying the hairy parser
   used when %semantic_parser is specified.  */
 
-#ifndef alloca
+#ifndef YYSTACK_USE_ALLOCA
+#ifdef alloca
+#define YYSTACK_USE_ALLOCA
+#else /* alloca not defined */
 #ifdef __GNUC__
+#define YYSTACK_USE_ALLOCA
 #define alloca __builtin_alloca
 #else /* not GNU C.  */
 #if (!defined (__STDC__) && defined (sparc)) || defined (__sparc__) || defined (__sparc) || defined (__sgi) || (defined (__sun) && defined (__i386))
+#define YYSTACK_USE_ALLOCA
 #include <alloca.h>
 #else /* not sparc */
+/* We think this test detects Watcom and Microsoft C.  */
 /* This used to test MSDOS, but that is a bad idea
-   since that is in the user namespace.  */
+   since that symbol is in the user namespace.  */
 #if (defined (_MSDOS) || defined (_MSDOS_)) && !defined (__TURBOC__)
+#if 0 /* No need for malloc.h, which pollutes the namespace;
+        instead, just don't use alloca.  */
 #include <malloc.h>
+#endif
 #else /* not MSDOS, or __TURBOC__ */
 #if defined(_AIX)
-#include <malloc.h>
+/* I don't know what this was needed for, but it pollutes the namespace.
+   So I turned it off.   rms, 2 May 1997.  */
+/* #include <malloc.h>  */
  #pragma alloca
+#define YYSTACK_USE_ALLOCA
 #else /* not MSDOS, or __TURBOC__, or _AIX */
-#ifdef __hpux /* This is right for HPUX 10.  */
-#include <alloca.h>
-#endif
-#if 0 /* This was right for HPUX 9.
-        Unfortunately there is no clean way to distinguish.  */
-#ifdef __hpux
-#ifdef __cplusplus
-extern "C" {
-void *alloca (unsigned int);
-};
-#else /* not __cplusplus */
-void *alloca ();
-#endif /* not __cplusplus */
+#if 0
+#ifdef __hpux /* haible@ilog.fr says this works for HPUX 9.05 and up,
+                and on HPUX 10.  Eventually we can turn this on.  */
+#define YYSTACK_USE_ALLOCA
+#define alloca __builtin_alloca
 #endif /* __hpux */
-#endif /* 0 */
+#endif
 #endif /* not _AIX */
 #endif /* not MSDOS, or __TURBOC__ */
-#endif /* not sparc.  */
-#endif /* not GNU C.  */
-#endif /* alloca not defined.  */
+#endif /* not sparc */
+#endif /* not GNU C */
+#endif /* alloca not defined */
+#endif /* YYSTACK_USE_ALLOCA not defined */
+
+#ifdef YYSTACK_USE_ALLOCA
+#define YYSTACK_ALLOC alloca
+#else
+#define YYSTACK_ALLOC malloc
+#endif
 
 /* Note: there must be only one dollar sign in this file.
    It is replaced by the list of actions, each action
@@ -73,8 +85,8 @@ void *alloca ();
 #define yyclearin      (yychar = YYEMPTY)
 #define YYEMPTY                -2
 #define YYEOF          0
-#define YYACCEPT       return(0)
-#define YYABORT        return(1)
+#define YYACCEPT       goto yyacceptlab
+#define YYABORT        goto yyabortlab
 #define YYERROR                goto yyerrlab1
 /* Like YYERROR except do call yyerror.
    This remains here temporarily to ease the
@@ -200,7 +212,7 @@ __yy_memcpy (char *to, char *from, unsigned int count)
 #endif
 #endif
 \f
-#line 196 "bison.simple"
+#line 216 "bison.simple"
 
 /* The user can define YYPARSE_PARAM as the name of an argument to be passed
    into yyparse.  The argument should have type void *.
@@ -258,6 +270,7 @@ yyparse(YYPARSE_PARAM_ARG)
 #endif
 
   int yystacksize = YYINITDEPTH;
+  int yyfree_stacks = 0;
 
 #ifdef YYPURE
   int yychar;
@@ -342,19 +355,30 @@ yynewstate:
       if (yystacksize >= YYMAXDEPTH)
        {
          yyerror("parser stack overflow");
+         if (yyfree_stacks)
+           {
+             free (yyss);
+             free (yyvs);
+#ifdef YYLSP_NEEDED
+             free (yyls);
+#endif
+           }
          return 2;
        }
       yystacksize *= 2;
       if (yystacksize > YYMAXDEPTH)
        yystacksize = YYMAXDEPTH;
-      yyss = (short *) alloca (yystacksize * sizeof (*yyssp));
+#ifndef YYSTACK_USE_ALLOCA
+      yyfree_stacks = 1;
+#endif
+      yyss = (short *) YYSTACK_ALLOC (yystacksize * sizeof (*yyssp));
       __yy_memcpy ((char *)yyss, (char *)yyss1,
                   size * (unsigned int) sizeof (*yyssp));
-      yyvs = (YYSTYPE *) alloca (yystacksize * sizeof (*yyvsp));
+      yyvs = (YYSTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yyvsp));
       __yy_memcpy ((char *)yyvs, (char *)yyvs1,
                   size * (unsigned int) sizeof (*yyvsp));
 #ifdef YYLSP_NEEDED
-      yyls = (YYLTYPE *) alloca (yystacksize * sizeof (*yylsp));
+      yyls = (YYLTYPE *) YYSTACK_ALLOC (yystacksize * sizeof (*yylsp));
       __yy_memcpy ((char *)yyls, (char *)yyls1,
                   size * (unsigned int) sizeof (*yylsp));
 #endif
@@ -514,7 +538,7 @@ yyreduce:
 #endif
 
 $   /* the action file gets copied in in place of this dollarsign */
-#line 498 "bison.simple"
+#line 542 "bison.simple"
 \f
   yyvsp -= yylen;
   yyssp -= yylen;
@@ -709,4 +733,28 @@ yyerrhandle:
 
   yystate = yyn;
   goto yynewstate;
+
+ yyacceptlab:
+  /* YYACCEPT comes here.  */
+  if (yyfree_stacks)
+    {
+      free (yyss);
+      free (yyvs);
+#ifdef YYLSP_NEEDED
+      free (yyls);
+#endif
+    }
+  return 0;
+
+ yyabortlab:
+  /* YYABORT comes here.  */
+  if (yyfree_stacks)
+    {
+      free (yyss);
+      free (yyvs);
+#ifdef YYLSP_NEEDED
+      free (yyls);
+#endif
+    }
+  return 1;
 }