(_AT_DATA_CALC_Y, Simple LALR Calculator):

[bison.git] / data / yacc.c

diff --git a/data/yacc.c b/data/yacc.c
index 0e30d1d8bbeeafef98e6be5d1c6e16ea1fe82ff6..4cf0b05f0ca9cfa34f69cc96036244bc9845c21f 100644 (file)
--- a/data/yacc.c
+++ b/data/yacc.c
@@ -190,7 +190,7 @@ b4_location_if([#define yylloc b4_prefix[]lloc])])[
 ]m4_ifdef([b4_stype],
 [b4_syncline([b4_stype_line], [b4_filename])
 typedef union b4_stype yystype;
-/* Line __line__ of __file__.  */
+/* Line __line__ of yacc.c.  */
 b4_syncline([@oline@], [@ofile@])],
 [typedef int yystype;])[
 # define YYSTYPE yystype
@@ -212,7 +212,7 @@ typedef struct yyltype
 /* Copy the second part of user declarations.  */
 ]b4_post_prologue
 
-/* Line __line__ of __file__.  */
+/* Line __line__ of yacc.c.  */
 b4_syncline([@oline@], [@ofile@])[
 
 #if ! defined (yyoverflow) || YYERROR_VERBOSE
@@ -261,17 +261,17 @@ union yyalloc
 [};
 
 /* The size of the maximum gap between one aligned stack and the next.  */
-# define YYSTACK_GAP_MAX (sizeof (union yyalloc) - 1)
+# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
 
 /* The size of an array large to enough to hold all stacks, each with
    N elements.  */
 ]b4_location_if(
 [# define YYSTACK_BYTES(N) \
      ((N) * (sizeof (short) + sizeof (YYSTYPE) + sizeof (YYLTYPE))     \
-      + 2 * YYSTACK_GAP_MAX)],
+      + 2 * YYSTACK_GAP_MAXIMUM)],
 [# define YYSTACK_BYTES(N) \
      ((N) * (sizeof (short) + sizeof (YYSTYPE))                                \
-      + YYSTACK_GAP_MAX)])[
+      + YYSTACK_GAP_MAXIMUM)])[
 
 /* Copy COUNT objects from FROM to TO.  The source and destination do
    not overlap.  */
@@ -302,7 +302,7 @@ union yyalloc
        YYSIZE_T yynewbytes;                                            \
        YYCOPY (&yyptr->Stack, Stack, yysize);                          \
        Stack = &yyptr->Stack;                                          \
-       yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAX;   \
+       yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
        yyptr += yynewbytes / sizeof (*yyptr);                          \
       }                                                                        \
     while (0)
@@ -547,6 +547,51 @@ do {                                                               \
     }                                                          \
 } while (0)
 
+/*------------------------------------------------------------------.
+| yy_stack_print -- Print the state stack from its BOTTOM up to its |
+| TOP (cinluded).                                                   |
+`------------------------------------------------------------------*/
+
+]b4_c_function_def([yy_stack_print], [static void],
+                   [[short *bottom], [bottom]],
+                   [[short *top],    [top]])[
+{
+  YYFPRINTF (stderr, "Stack now");
+  for (/* Nothing. */; bottom <= top; ++bottom)
+    YYFPRINTF (stderr, " %d", *bottom);
+  YYFPRINTF (stderr, "\n");
+}
+
+# define YY_STACK_PRINT(Bottom, Top)                           \
+do {                                                           \
+  if (yydebug)                                                 \
+    yy_stack_print ((Bottom), (Top));                          \
+} while (0)
+
+
+/*------------------------------------------------.
+| Report that the YYRULE is going to be reduced.  |
+`------------------------------------------------*/
+
+]b4_c_function_def([yy_reduce_print], [static void],
+                   [[int yyrule], [yyrule]])[
+{
+  int yyi;
+  unsigned int yylineno = yyrline[yyrule];
+  YYFPRINTF (stderr, "Reducing stack by rule %d (line %u), ",
+             yyrule - 1, yylineno);
+  /* Print the symbols being reduced, and their result.  */
+  for (yyi = yyprhs[yyrule]; 0 <= yyrhs[yyi]; yyi++)
+    YYFPRINTF (stderr, "%s ", yytname [yyrhs[yyi]]);
+  YYFPRINTF (stderr, "-> %s\n", yytname [yyr1[yyrule]]);
+}
+
+# define YY_REDUCE_PRINT(Rule)         \
+do {                                   \
+  if (yydebug)                         \
+    yy_reduce_print (Rule);            \
+} while (0)
+
 /* Nonzero means print parse trace.  It is left uninitialized so that
    multiple parsers can coexist.  */
 int yydebug;
@@ -554,8 +599,11 @@ int yydebug;
 # define YYDPRINTF(Args)
 # define YYDSYMPRINT(Args)
 # define YYDSYMPRINTF(Title, Token, Value, Location)
+# define YY_STACK_PRINT(Bottom, Top)
+# define YY_REDUCE_PRINT(Rule)
 #endif /* !YYDEBUG */
 
+
 /* YYINITDEPTH -- initial size of the parser's stacks.  */
 #ifndef        YYINITDEPTH
 # define YYINITDEPTH ]b4_stack_depth_init[
@@ -865,8 +913,6 @@ yybackup:
     }
   else
     {
-      /* We have to keep this `#if YYDEBUG', since we use variables
-        which are defined only if `YYDEBUG' is set.  */
       YYDSYMPRINTF ("Next token is", yytoken, &yylval, &yylloc);
     }
 
@@ -936,45 +982,20 @@ yyreduce:
 ]b4_location_if(
 [  /* Default location. */
   YYLLOC_DEFAULT (yyloc, (yylsp - yylen), yylen);])[
-
-#if YYDEBUG
-  /* We have to keep this `#if YYDEBUG', since we use variables which
-     are defined only if `YYDEBUG' is set.  */
-  if (yydebug)
-    {
-      int yyi;
-
-      YYFPRINTF (stderr, "Reducing by rule %d (line %d), ",
-                yyn - 1, yyrline[yyn]);
-
-      /* Print the symbols being reduced, and their result.  */
-      for (yyi = yyprhs[yyn]; 0 <= yyrhs[yyi]; yyi++)
-       YYFPRINTF (stderr, "%s ", yytname[yyrhs[yyi]]);
-      YYFPRINTF (stderr, "-> %s\n", yytname[yyr1[yyn]]);
-    }
-#endif
+  YY_REDUCE_PRINT (yyn);
   switch (yyn)
     ]{
       b4_actions
     }
 
-/* Line __line__ of __file__.  */
+/* Line __line__ of yacc.c.  */
 b4_syncline([@oline@], [@ofile@])
 \f
 [  yyvsp -= yylen;
   yyssp -= yylen;
 ]b4_location_if([  yylsp -= yylen;])[
 
-#if YYDEBUG
-  if (yydebug)
-    {
-      short *yyssp1 = yyss - 1;
-      YYFPRINTF (stderr, "state stack now");
-      while (yyssp1 != yyssp)
-       YYFPRINTF (stderr, " %d", *++yyssp1);
-      YYFPRINTF (stderr, "\n");
-    }
-#endif
+  YY_STACK_PRINT (yyss, yyssp);
 
   *++yyvsp = yyval;
 ]b4_location_if([  *++yylsp = yyloc;])[
@@ -1051,13 +1072,7 @@ yyerrlab:
 #endif /* YYERROR_VERBOSE */
        yyerror (]b4_yyerror_args["syntax error");
     }
-  goto yyerrlab1;
 
-
-/*----------------------------------------------------.
-| yyerrlab1 -- error raised explicitly by an action.  |
-`----------------------------------------------------*/
-yyerrlab1:
   if (yyerrstatus == 3)
     {
       /* If just tried and failed to reuse lookahead token after an
@@ -1085,7 +1100,13 @@ yyerrlab1:
 
   /* Else will try to reuse lookahead token after shifting the error
      token.  */
+  goto yyerrlab1;
+
 
+/*----------------------------------------------------.
+| yyerrlab1 -- error raised explicitly by an action.  |
+`----------------------------------------------------*/
+yyerrlab1:
   yyerrstatus = 3;     /* Each real token shifted decrements this.  */
 
   for (;;)
@@ -1111,17 +1132,7 @@ yyerrlab1:
       yyvsp--;
       yystate = *--yyssp;
 ]b4_location_if([      yylsp--;])[
-
-#if YYDEBUG
-      if (yydebug)
-       {
-         short *yyssp1 = yyss - 1;
-         YYFPRINTF (stderr, "Error: state stack now");
-         while (yyssp1 != yyssp)
-           YYFPRINTF (stderr, " %d", *++yyssp1);
-         YYFPRINTF (stderr, "\n");
-       }
-#endif
+      YY_STACK_PRINT (yyss, yyssp);
     }
 
   if (yyn == YYFINAL)
@@ -1186,7 +1197,7 @@ b4_token_defines(b4_tokens)
 m4_ifdef([b4_stype],
 [b4_syncline([b4_stype_line], [b4_filename])
 typedef union b4_stype yystype;
-/* Line __line__ of __file__.  */
+/* Line __line__ of yacc.c.  */
 b4_syncline([@oline@], [@ofile@])],
 [typedef int yystype;])
 # define YYSTYPE yystype