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bison/src/bison/2.4.1/bison-2.4.1-src/data/c.m4

Index: bison/src/bison/2.4.1/bison-2.4.1-src/data/c.m4
===================================================================
--- bison/src/bison/2.4.1/bison-2.4.1-src/data/c.m4	(revision 0)
+++ bison/src/bison/2.4.1/bison-2.4.1-src/data/c.m4	(revision 0)
@@ -0,0 +1,477 @@
+                                                            -*- Autoconf -*-
+
+# C M4 Macros for Bison.
+# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008 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
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+## ---------------- ##
+## Identification.  ##
+## ---------------- ##
+
+# b4_comment(TEXT)
+# ----------------
+m4_define([b4_comment], [/* m4_bpatsubst([$1], [
+], [
+   ])  */])
+
+# b4_identification
+# -----------------
+# Depends on individual skeletons to define b4_pure_flag, b4_push_flag, or
+# b4_pull_flag if they use the values of the %define variables api.pure or
+# api.push_pull.
+m4_define([b4_identification],
+[[/* Identify Bison output.  */
+#define YYBISON 1
+
+/* Bison version.  */
+#define YYBISON_VERSION "]b4_version["
+
+/* Skeleton name.  */
+#define YYSKELETON_NAME ]b4_skeleton[]m4_ifdef([b4_pure_flag], [[
+
+/* Pure parsers.  */
+#define YYPURE ]b4_pure_flag])[]m4_ifdef([b4_push_flag], [[
+
+/* Push parsers.  */
+#define YYPUSH ]b4_push_flag])[]m4_ifdef([b4_pull_flag], [[
+
+/* Pull parsers.  */
+#define YYPULL ]b4_pull_flag])[
+
+/* Using locations.  */
+#define YYLSP_NEEDED ]b4_locations_flag[
+]])
+
+
+## ---------------- ##
+## Default values.  ##
+## ---------------- ##
+
+# If the %union is not named, its name is YYSTYPE.
+m4_define_default([b4_union_name], [YYSTYPE])
+
+# If the %name-prefix is not given, it is yy.
+m4_define_default([b4_prefix], [yy])
+
+## ------------------------ ##
+## Pure/impure interfaces.  ##
+## ------------------------ ##
+
+# b4_user_args
+# ------------
+m4_define([b4_user_args],
+[m4_ifset([b4_parse_param], [, b4_c_args(b4_parse_param)])])
+
+
+# b4_parse_param
+# --------------
+# If defined, b4_parse_param arrives double quoted, but below we prefer
+# it to be single quoted.
+m4_define([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_unquote(m4_car($1_$2)))dnl
+m4_pushdef([$2], m4_shift($1_$2))dnl
+$3[]dnl
+m4_popdef([$2])dnl
+m4_popdef([$1])dnl
+])])
+
+# b4_parse_param_use
+# ------------------
+# `YYUSE' all the parse-params.
+m4_define([b4_parse_param_use],
+[b4_parse_param_for([Decl], [Formal], [  YYUSE (Formal);
+])dnl
+])
+
+
+## ------------ ##
+## Data Types.  ##
+## ------------ ##
+
+# b4_int_type(MIN, MAX)
+# ---------------------
+# Return the smallest int type able to handle numbers ranging from
+# MIN to MAX (included).
+m4_define([b4_int_type],
+[m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
+       b4_ints_in($@,   [-128],   [127]), [1], [signed char],
+
+       b4_ints_in($@,      [0], [65535]), [1], [unsigned short int],
+       b4_ints_in($@, [-32768], [32767]), [1], [short int],
+
+       m4_eval([0 <= $1]),                [1], [unsigned int],
+
+					       [int])])
+
+
+# b4_int_type_for(NAME)
+# ---------------------
+# Return the smallest int type able to handle numbers ranging from
+# `NAME_min' to `NAME_max' (included).
+m4_define([b4_int_type_for],
+[b4_int_type($1_min, $1_max)])
+
+
+
+## ---------##
+## Values.  ##
+## ---------##
+
+# b4_null
+---------
+# Return a null pointer constant.  NULL infringes on the user name
+# space in C, so use 0 rather than NULL.
+m4_define([b4_null], [0])
+
+
+
+
+## ------------------------- ##
+## Assigning token numbers.  ##
+## ------------------------- ##
+
+# b4_token_define(TOKEN-NAME, TOKEN-NUMBER)
+# -----------------------------------------
+# Output the definition of this token as #define.
+m4_define([b4_token_define],
+[#define $1 $2
+])
+
+
+# b4_token_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
+# -------------------------------------------------------
+# Output the definition of the tokens (if there are) as #defines.
+m4_define([b4_token_defines],
+[m4_if([$#$1], [1], [],
+[/* Tokens.  */
+m4_map([b4_token_define], [$@])])
+])
+
+
+# b4_token_enum(TOKEN-NAME, TOKEN-NUMBER)
+# ---------------------------------------
+# Output the definition of this token as an enum.
+m4_define([b4_token_enum],
+[$1 = $2])
+
+
+# b4_token_enums(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
+# -----------------------------------------------------
+# Output the definition of the tokens (if there are) as enums.
+m4_define([b4_token_enums],
+[m4_if([$#$1], [1], [],
+[/* Tokens.  */
+#ifndef YYTOKENTYPE
+# define YYTOKENTYPE
+   /* Put the tokens into the symbol table, so that GDB and other debuggers
+      know about them.  */
+   enum yytokentype {
+m4_map_sep([     b4_token_enum], [,
+],
+	   [$@])
+   };
+#endif
+])])
+
+
+# b4_token_enums_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
+# -------------------------------------------------------------
+# Output the definition of the tokens (if there are any) as enums and, if POSIX
+# Yacc is enabled, as #defines.
+m4_define([b4_token_enums_defines],
+[b4_token_enums($@)b4_yacc_if([b4_token_defines($@)], [])
+])
+
+
+
+## --------------------------------------------- ##
+## Defining C functions in both K&R and ANSI-C.  ##
+## --------------------------------------------- ##
+
+
+# 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],
+[#if b4_c_modern
+b4_c_ansi_function_def($@)
+#else
+$2
+$1 (b4_c_knr_formal_names(m4_shift2($@)))
+b4_c_knr_formal_decls(m4_shift2($@))
+#endif[]dnl
+])
+
+
+# b4_c_ansi_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# ---------------------------------------------------------------
+# Declare the function NAME in ANSI.
+m4_define([b4_c_ansi_function_def],
+[$2
+$1 (b4_c_ansi_formals(m4_shift2($@)))[]dnl
+])
+
+
+# b4_c_ansi_formals([DECL1, NAME1], ...)
+# --------------------------------------
+# Output the arguments ANSI-C definition.
+m4_define([b4_c_ansi_formals],
+[m4_if([$#], [0], [void],
+       [$#$1], [1], [void],
+	       [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])])
+
+m4_define([b4_c_ansi_formal],
+[$1])
+
+
+# b4_c_knr_formal_names([DECL1, NAME1], ...)
+# ------------------------------------------
+# Output the argument names.
+m4_define([b4_c_knr_formal_names],
+[m4_map_sep([b4_c_knr_formal_name], [, ], [$@])])
+
+m4_define([b4_c_knr_formal_name],
+[$2])
+
+
+# b4_c_knr_formal_decls([DECL1, NAME1], ...)
+# ------------------------------------------
+# Output the K&R argument declarations.
+m4_define([b4_c_knr_formal_decls],
+[m4_map_sep([b4_c_knr_formal_decl],
+	    [
+],
+	    [$@])])
+
+m4_define([b4_c_knr_formal_decl],
+[    $1;])
+
+
+
+## ------------------------------------------------------------ ##
+## Declaring (prototyping) C functions in both K&R and ANSI-C.  ##
+## ------------------------------------------------------------ ##
+
+
+# b4_c_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# -----------------------------------------------------------
+# Declare the function NAME.
+m4_define([b4_c_function_decl],
+[#if defined __STDC__ || defined __cplusplus
+b4_c_ansi_function_decl($@)
+#else
+$2 $1 ();
+#endif[]dnl
+])
+
+
+# b4_c_ansi_function_decl(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# ----------------------------------------------------------------
+# Declare the function NAME.
+m4_define([b4_c_ansi_function_decl],
+[$2 $1 (b4_c_ansi_formals(m4_shift2($@)));[]dnl
+])
+
+
+
+
+## --------------------- ##
+## Calling C functions.  ##
+## --------------------- ##
+
+
+# b4_c_function_call(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+# -----------------------------------------------------------
+# Call the function NAME with arguments NAME1, NAME2 etc.
+m4_define([b4_c_function_call],
+[$1 (b4_c_args(m4_shift2($@)))[]dnl
+])
+
+
+# b4_c_args([DECL1, NAME1], ...)
+# ------------------------------
+# Output the arguments NAME1, NAME2...
+m4_define([b4_c_args],
+[m4_map_sep([b4_c_arg], [, ], [$@])])
+
+m4_define([b4_c_arg],
+[$2])
+
+
+## ----------- ##
+## Synclines.  ##
+## ----------- ##
+
+# b4_sync_start(LINE, FILE)
+# -----------------------
+m4_define([b4_sync_start], [[#]line $1 $2])
+
+
+## -------------- ##
+## User actions.  ##
+## -------------- ##
+
+# b4_case(LABEL, STATEMENTS)
+# --------------------------
+m4_define([b4_case],
+[  case $1:
+$2
+    break;])
+
+# b4_symbol_actions(FILENAME, LINENO,
+#                   SYMBOL-TAG, SYMBOL-NUM,
+#                   SYMBOL-ACTION, SYMBOL-TYPENAME)
+# -------------------------------------------------
+m4_define([b4_symbol_actions],
+[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])
+	$5;
+b4_syncline([@oline@], [@ofile@])
+	break;
+m4_popdef([b4_at_dollar])dnl
+m4_popdef([b4_dollar_dollar])dnl
+])
+
+
+# b4_yydestruct_generate(FUNCTION-DECLARATOR)
+# -------------------------------------------
+# 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_default([b4_yydestruct_generate],
+[[/*-----------------------------------------------.
+| Release the memory associated to this symbol.  |
+`-----------------------------------------------*/
+
+/*ARGSUSED*/
+]$1([yydestruct],
+    [static void],
+    [[const char *yymsg],    [yymsg]],
+    [[int yytype],           [yytype]],
+    [[YYSTYPE *yyvaluep],    [yyvaluep]][]dnl
+b4_locations_if(            [, [[YYLTYPE *yylocationp], [yylocationp]]])[]dnl
+m4_ifset([b4_parse_param], [, b4_parse_param]))[
+{
+  YYUSE (yyvaluep);
+]b4_locations_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:
+	break;
+    }
+}]dnl
+])
+
+
+# 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.
+m4_define_default([b4_yy_symbol_print_generate],
+[[
+/*--------------------------------.
+| Print this symbol on YYOUTPUT.  |
+`--------------------------------*/
+
+/*ARGSUSED*/
+]$1([yy_symbol_value_print],
+    [static void],
+	       [[FILE *yyoutput],                       [yyoutput]],
+	       [[int yytype],                           [yytype]],
+	       [[YYSTYPE const * const yyvaluep],       [yyvaluep]][]dnl
+b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
+m4_ifset([b4_parse_param], [, b4_parse_param]))[
+{
+  if (!yyvaluep)
+    return;
+]b4_locations_if([  YYUSE (yylocationp);
+])dnl
+b4_parse_param_use[]dnl
+[# ifdef YYPRINT
+  if (yytype < YYNTOKENS)
+    YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep);
+# else
+  YYUSE (yyoutput);
+# endif
+  switch (yytype)
+    {
+]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
+[      default:
+	break;
+    }
+}
+
+
+/*--------------------------------.
+| Print this symbol on YYOUTPUT.  |
+`--------------------------------*/
+
+]$1([yy_symbol_print],
+    [static void],
+	       [[FILE *yyoutput],                       [yyoutput]],
+	       [[int yytype],                           [yytype]],
+	       [[YYSTYPE const * const yyvaluep],       [yyvaluep]][]dnl
+b4_locations_if([, [[YYLTYPE const * 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_locations_if([  YY_LOCATION_PRINT (yyoutput, *yylocationp);
+  YYFPRINTF (yyoutput, ": ");
+])dnl
+[  yy_symbol_value_print (yyoutput, yytype, yyvaluep]dnl
+b4_locations_if([, yylocationp])[]b4_user_args[);
+  YYFPRINTF (yyoutput, ")");
+}]dnl
+])