* TODO: Remove dead items.

[bison.git] / data / c.m4

diff --git a/data/c.m4 b/data/c.m4
index 209bb1a76a4a7a1be7cb51085efc4462539e32d1..f9066764cf53523684989805cebbf3d1b599a4e0 100644 (file)
--- a/data/c.m4
+++ b/data/c.m4
@@ -1,7 +1,7 @@
 m4_divert(-1)                                               -*- Autoconf -*-
 
 # C M4 Macros for Bison.
 m4_divert(-1)                                               -*- Autoconf -*-
 
 # C M4 Macros for Bison.

-# Copyright (C) 2002 Free Software Foundation, Inc.
+# Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc.

 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by


@@ -15,8 +15,8 @@ m4_divert(-1)                                               -*- Autoconf -*-
 
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software
 
 # You should have received a copy of the GNU General Public License
 # along with this program; if not, write to the Free Software

-# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307  USA
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+# 02110-1301  USA

 
 
 ## ---------------- ##
 
 
 ## ---------------- ##


@@ -43,8 +43,8 @@ m4_define([b4_copyright],
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software

-   Foundation, Inc., 59 Temple Place - Suite 330,
-   Boston, MA 02111-1307, USA.  */])
+   Foundation, Inc., 51 Franklin Street, Fifth Floor,
+   Boston, MA 02110-1301, USA.  */])

 
 
 # b4_identification
 
 
 # b4_identification


@@ -53,6 +53,9 @@ m4_define([b4_identification],
 [/* Identify Bison output.  */
 [#]define YYBISON 1
 
 [/* Identify Bison output.  */
 [#]define YYBISON 1
 

+/* Bison version.  */
+[#]define YYBISON_VERSION "b4_version"
+

 /* Skeleton name.  */
 [#]define YYSKELETON_NAME b4_skeleton
 
 /* Skeleton name.  */
 [#]define YYSKELETON_NAME b4_skeleton
 


@@ -93,6 +96,26 @@ m4_define([b4_parse_param],
 b4_parse_param))
 
 
 b4_parse_param))
 
 

+# b4_parse_param_for(DECL, FORMAL, BODY)
+# ---------------------------------------
+# Iterate over the user parameters, binding the declaration to DECL,
+# the formal name to FORMAL, and evaluating the BODY.
+m4_define([b4_parse_param_for],
+[m4_foreach([$1_$2], m4_defn([b4_parse_param]),
+[m4_pushdef([$1], m4_fst($1_$2))dnl
+m4_pushdef([$2], m4_shift($1_$2))dnl
+$3[]dnl
+m4_popdef([$2])dnl
+m4_popdef([$1])dnl
+])])
+
+# b4_parse_param_use
+# ------------------
+# `YYUSE' all the parse-params.
+m4_define([b4_parse_param_use],
+[b4_parse_param_for([Decl], [Formal], [  YYUSE (Formal);
+])dnl
+])

 
 ## ------------ ##
 ## Data Types.  ##
 
 ## ------------ ##
 ## Data Types.  ##


@@ -114,12 +137,12 @@ m4_define([b4_int_type],
 [m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
        b4_ints_in($@,   [-128],   [127]), [1], [signed char],
 
 [m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
        b4_ints_in($@,   [-128],   [127]), [1], [signed char],
 

-       b4_ints_in($@,      [0], [65535]), [1], [unsigned short],
-       b4_ints_in($@, [-32768], [32767]), [1], [short],
+       b4_ints_in($@,      [0], [65535]), [1], [unsigned short int],
+       b4_ints_in($@, [-32768], [32767]), [1], [short int],

 
        m4_eval([0 <= $1]),                [1], [unsigned int],
 
 
        m4_eval([0 <= $1]),                [1], [unsigned int],
 

-                                              [int])])
+                                              [int])])

 
 
 # b4_int_type_for(NAME)
 
 
 # b4_int_type_for(NAME)


@@ -135,6 +158,15 @@ m4_define([b4_int_type_for],
 ## ------------------ ##
 
 
 ## ------------------ ##
 
 

+# b4_error_verbose_if(IF-TRUE, IF-FALSE)
+# --------------------------------------
+# Expand IF-TRUE, if errors are verbose, IF-FALSE otherwise.
+m4_define([b4_error_verbose_if],
+[m4_if(b4_error_verbose, [1],
+       [$1],
+       [$2])])
+
+

 # b4_location_if(IF-TRUE, IF-FALSE)
 # ---------------------------------
 # Expand IF-TRUE, if locations are used, IF-FALSE otherwise.
 # b4_location_if(IF-TRUE, IF-FALSE)
 # ---------------------------------
 # Expand IF-TRUE, if locations are used, IF-FALSE otherwise.


@@ -166,6 +198,16 @@ m4_define([b4_token_define],
 ])
 
 
 ])
 
 

+# b4_token_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
+# -------------------------------------------------------
+# Output the definition of the tokens (if there are) as #defines.
+m4_define([b4_token_defines],
+[m4_if([$@], [[]], [],
+[/* Tokens.  */
+m4_map([b4_token_define], [$@])])
+])
+
+

 # b4_token_enum(TOKEN-NAME, TOKEN-NUMBER)
 # ---------------------------------------
 # Output the definition of this token as an enum.
 # b4_token_enum(TOKEN-NAME, TOKEN-NUMBER)
 # ---------------------------------------
 # Output the definition of this token as an enum.


@@ -173,10 +215,10 @@ m4_define([b4_token_enum],
 [$1 = $2])
 
 
 [$1 = $2])
 
 

-# b4_token_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
-# -------------------------------------------------------
-# Output the definition of the tokens (if there are) as enums and #define.
-m4_define([b4_token_defines],
+# b4_token_enums(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
+# -----------------------------------------------------
+# Output the definition of the tokens (if there are) as enums.
+m4_define([b4_token_enums],

 [m4_if([$@], [[]], [],
 [/* Tokens.  */
 #ifndef YYTOKENTYPE
 [m4_if([$@], [[]], [],
 [/* Tokens.  */
 #ifndef YYTOKENTYPE


@@ -186,11 +228,17 @@ m4_define([b4_token_defines],
    enum yytokentype {
 m4_map_sep([     b4_token_enum], [,
 ],
    enum yytokentype {
 m4_map_sep([     b4_token_enum], [,
 ],

-           [$@])
+          [$@])

    };
 #endif
    };
 #endif

-m4_map([b4_token_define], [$@])
-])
+])])
+
+
+# b4_token_enums_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
+# -------------------------------------------------------------
+# Output the definition of the tokens (if there are) as enums and #defines.
+m4_define([b4_token_enums_defines],
+[b4_token_enums($@)b4_token_defines($@)

 ])
 
 
 ])
 
 


@@ -200,11 +248,25 @@ m4_map([b4_token_define], [$@])
 ## --------------------------------------------- ##
 
 
 ## --------------------------------------------- ##
 
 

+# b4_modern_c
+# -----------
+# A predicate useful in #if to determine whether C is ancient or modern.
+#
+# If __STDC__ is defined, the compiler is modern.  IBM xlc 7.0 when run
+# as 'cc' doesn't define __STDC__ (or __STDC_VERSION__) for pedantic
+# reasons, but it defines __C99__FUNC__ so check that as well.
+# Microsoft C normally doesn't define these macros, but it defines _MSC_VER.
+# Consider a C++ compiler to be modern if it defines __cplusplus.
+#
+m4_define([b4_c_modern],
+  [[(defined __STDC__ || defined __C99__FUNC__ \
+     || defined __cplusplus || defined _MSC_VER)]])
+

 # b4_c_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
 # ----------------------------------------------------------
 # Declare the function NAME.
 m4_define([b4_c_function_def],
 # b4_c_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
 # ----------------------------------------------------------
 # Declare the function NAME.
 m4_define([b4_c_function_def],

-[#if defined (__STDC__) || defined (__cplusplus)
+[#if b4_c_modern

 b4_c_ansi_function_def($@)
 #else
 $2
 b4_c_ansi_function_def($@)
 #else
 $2


@@ -228,9 +290,9 @@ $1 (b4_c_ansi_formals(m4_shiftn(2, $@)))[]dnl
 # Output the arguments ANSI-C definition.
 m4_define([b4_c_ansi_formals],
 [m4_case([$@],
 # Output the arguments ANSI-C definition.
 m4_define([b4_c_ansi_formals],
 [m4_case([$@],

-         [],   [void],
-         [[]], [void],
-               [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])])
+        [],   [void],
+        [[]], [void],
+              [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])])

 
 m4_define([b4_c_ansi_formal],
 [$1])
 
 m4_define([b4_c_ansi_formal],
 [$1])


@@ -251,9 +313,9 @@ m4_define([b4_c_knr_formal_name],
 # Output the K&R argument declarations.
 m4_define([b4_c_knr_formal_decls],
 [m4_map_sep([b4_c_knr_formal_decl],
 # Output the K&R argument declarations.
 m4_define([b4_c_knr_formal_decls],
 [m4_map_sep([b4_c_knr_formal_decl],

-            [
+           [

 ],
 ],

-            [$@])])
+           [$@])])

 
 m4_define([b4_c_knr_formal_decl],
 [    $1;])
 
 m4_define([b4_c_knr_formal_decl],
 [    $1;])


@@ -269,7 +331,7 @@ m4_define([b4_c_knr_formal_decl],
 # -----------------------------------------------------------
 # Declare the function NAME.
 m4_define([b4_c_function_decl],
 # -----------------------------------------------------------
 # Declare the function NAME.
 m4_define([b4_c_function_decl],

-[#if defined (__STDC__) || defined (__cplusplus)
+[#if defined __STDC__ || defined __cplusplus

 b4_c_ansi_function_decl($@)
 #else
 $2 $1 ();
 b4_c_ansi_function_decl($@)
 #else
 $2 $1 ();


@@ -314,7 +376,6 @@ m4_define([b4_c_arg],
 ## Synclines.  ##
 ## ----------- ##
 
 ## Synclines.  ##
 ## ----------- ##
 

-

 # b4_syncline(LINE, FILE)
 # -----------------------
 m4_define([b4_syncline],
 # b4_syncline(LINE, FILE)
 # -----------------------
 m4_define([b4_syncline],


@@ -322,18 +383,24 @@ m4_define([b4_syncline],
        [[#]line $1 $2])])
 
 
        [[#]line $1 $2])])
 
 

+
+## -------------- ##
+## User actions.  ##
+## -------------- ##
+

 # b4_symbol_actions(FILENAME, LINENO,
 #                   SYMBOL-TAG, SYMBOL-NUM,
 #                   SYMBOL-ACTION, SYMBOL-TYPENAME)
 # -------------------------------------------------
 m4_define([b4_symbol_actions],
 # b4_symbol_actions(FILENAME, LINENO,
 #                   SYMBOL-TAG, SYMBOL-NUM,
 #                   SYMBOL-ACTION, SYMBOL-TYPENAME)
 # -------------------------------------------------
 m4_define([b4_symbol_actions],

-[m4_pushdef([b4_dollar_dollar], [yyvaluep->$6])dnl
+[m4_pushdef([b4_dollar_dollar],
+   [m4_ifval([$6], [(yyvaluep->$6)], [(*yyvaluep)])])dnl

 m4_pushdef([b4_at_dollar], [(*yylocationp)])dnl
       case $4: /* $3 */
 b4_syncline([$2], [$1])
 m4_pushdef([b4_at_dollar], [(*yylocationp)])dnl
       case $4: /* $3 */
 b4_syncline([$2], [$1])

-        $5;
+       $5;

 b4_syncline([@oline@], [@ofile@])
 b4_syncline([@oline@], [@ofile@])

-        break;
+       break;

 m4_popdef([b4_at_dollar])dnl
 m4_popdef([b4_dollar_dollar])dnl
 ])
 m4_popdef([b4_at_dollar])dnl
 m4_popdef([b4_dollar_dollar])dnl
 ])


@@ -344,69 +411,101 @@ m4_popdef([b4_dollar_dollar])dnl
 # Generate the "yydestruct" function, which declaration is issued using
 # FUNCTION-DECLARATOR, which may be "b4_c_ansi_function_def" for ISO C
 # or "b4_c_function_def" for K&R.
 # Generate the "yydestruct" function, which declaration is issued using
 # FUNCTION-DECLARATOR, which may be "b4_c_ansi_function_def" for ISO C
 # or "b4_c_function_def" for K&R.

-m4_define([b4_yydestruct_generate],
+m4_define_default([b4_yydestruct_generate],

 [[/*-----------------------------------------------.
 | Release the memory associated to this symbol.  |
 `-----------------------------------------------*/
 
 [[/*-----------------------------------------------.
 | Release the memory associated to this symbol.  |
 `-----------------------------------------------*/
 

+/*ARGSUSED*/

 ]$1([yydestruct],
     [static void],
 ]$1([yydestruct],
     [static void],

+    [[const char *yymsg],    [yymsg]],

     [[int yytype],           [yytype]],
     [[int yytype],           [yytype]],

-    [[YYSTYPE *yyvaluep],    [yyvaluep]]b4_location_if([,
-    [[YYLTYPE *yylocationp], [yylocationp]]]))[
+    [[YYSTYPE *yyvaluep],    [yyvaluep]][]dnl
+b4_location_if(            [, [[YYLTYPE *yylocationp], [yylocationp]]])[]dnl
+m4_ifset([b4_parse_param], [, b4_parse_param]))[

 {
 {

-  /* Pacify ``unused variable'' warnings.  */
-  (void) yyvaluep;
-]b4_location_if([  (void) yylocationp;
-])[
+  YYUSE (yyvaluep);
+]b4_location_if([  YYUSE (yylocationp);
+])dnl
+b4_parse_param_use[]dnl
+[
+  if (!yymsg)
+    yymsg = "Deleting";
+  YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+

   switch (yytype)
     {
 ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
       default:
   switch (yytype)
     {
 ]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
       default:

-        break;
+       break;

     }
 }]dnl
 ])
 
 
     }
 }]dnl
 ])
 
 

-# b4_yysymprint_generate(FUNCTION-DECLARATOR)
-# -------------------------------------------
-# Generate the "yysymprint" function, which declaration is issued using
+# b4_yy_symbol_print_generate(FUNCTION-DECLARATOR)
+# ------------------------------------------------
+# Generate the "yy_symbol_print" function, which declaration is issued using

 # FUNCTION-DECLARATOR, which may be "b4_c_ansi_function_def" for ISO C
 # or "b4_c_function_def" for K&R.
 # FUNCTION-DECLARATOR, which may be "b4_c_ansi_function_def" for ISO C
 # or "b4_c_function_def" for K&R.

-m4_define([b4_yysymprint_generate],
-[[/*--------------------------------.
+m4_define_default([b4_yy_symbol_print_generate],
+[[
+/*--------------------------------.

 | Print this symbol on YYOUTPUT.  |
 `--------------------------------*/
 
 | Print this symbol on YYOUTPUT.  |
 `--------------------------------*/
 

-]$1([yysymprint],
+/*ARGSUSED*/
+]$1([yy_symbol_value_print],

     [static void],
     [static void],

-    [[FILE *yyoutput],       [yyoutput]],
-    [[int yytype],           [yytype]],
-    [[YYSTYPE *yyvaluep],    [yyvaluep]]b4_location_if([,
-    [[YYLTYPE *yylocationp], [yylocationp]]]))
+              [[FILE *yyoutput],                       [yyoutput]],
+              [[int yytype],                           [yytype]],
+              [[const YYSTYPE * const yyvaluep],       [yyvaluep]][]dnl
+b4_location_if([, [[const YYLTYPE * const yylocationp], [yylocationp]]])[]dnl
+m4_ifset([b4_parse_param], [, b4_parse_param]))[

 {
 {

-  /* Pacify ``unused variable'' warnings.  */
-  (void) yyvaluep;
-b4_location_if([  (void) yylocationp;
+  if (!yyvaluep)
+    return;
+]b4_location_if([  YYUSE (yylocationp);

 ])dnl
 ])dnl

-
+b4_parse_param_use[]dnl
+[# ifdef YYPRINT

   if (yytype < YYNTOKENS)
   if (yytype < YYNTOKENS)

-    {
-      YYFPRINTF (yyoutput, "token %s (", yytname[[yytype]]);
-# ifdef YYPRINT
-      YYPRINT (yyoutput, yytoknum[[yytype]], *yyvaluep);
+    YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
+# else
+  YYUSE (yyoutput);

 # endif
 # endif

-    }
-  else
-    YYFPRINTF (yyoutput, "nterm %s (", yytname[[yytype]]);
-

   switch (yytype)
     {
   switch (yytype)
     {

-m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
-      default:
-        break;
+]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
+[      default:
+       break;

     }
     }

-  YYFPRINTF (yyoutput, ")");

 }
 }

+
+
+/*--------------------------------.
+| Print this symbol on YYOUTPUT.  |
+`--------------------------------*/
+
+]$1([yy_symbol_print],
+    [static void],
+              [[FILE *yyoutput],                       [yyoutput]],
+              [[int yytype],                           [yytype]],
+              [[const YYSTYPE * const yyvaluep],       [yyvaluep]][]dnl
+b4_location_if([, [[const YYLTYPE * const yylocationp], [yylocationp]]])[]dnl
+m4_ifset([b4_parse_param], [, b4_parse_param]))[
+{
+  if (yytype < YYNTOKENS)
+    YYFPRINTF (yyoutput, "token %s (", yytname[yytype]);
+  else
+    YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]);
+
+]b4_location_if([  YY_LOCATION_PRINT (yyoutput, *yylocationp);
+  YYFPRINTF (yyoutput, ": ");
+])dnl
+[  yy_symbol_value_print (yyoutput, yytype, yyvaluep]dnl
+b4_location_if([, yylocationp])[]b4_user_args[);
+  YYFPRINTF (yyoutput, ")");
+}]dnl

 ])
 ])