Do not use date ranges in copyright notices.

[bison.git] / data / c.m4

diff --git a/data/c.m4 b/data/c.m4
index 683259886b3b8a08410484f7bfb2161872d28aee..9e7b31937acf10e536991719f41d65131e763302 100644 (file)
--- a/data/c.m4
+++ b/data/c.m4
@@ -1,8 +1,9 @@
                                                             -*- Autoconf -*-
 
 # C M4 Macros for Bison.
-# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008 Free Software
-# Foundation, Inc.
+
+# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010 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
@@ -21,20 +22,40 @@
 ## Identification.  ##
 ## ---------------- ##
 
-# b4_comment(TEXT)
-# ----------------
+# b4_comment_(TEXT, OPEN, CONTINUE, END)
+# -------------------------------------
 # Put TEXT in comment.  Avoid trailing spaces: don't indent empty lines.
 # Avoid adding indentation to the first line, as the indentation comes
-# from "/*".  That's why we don't patsubst([$1], [^\(.\)], [   \1]).
-m4_define([b4_comment], [/* m4_bpatsubst([$1], [
+# from OPEN.  That's why we don't patsubst([$1], [^\(.\)], [   \1]).
+#
+# Prefix all the output lines with PREFIX.
+m4_define([b4_comment_], [$2[]m4_bpatsubst([$1], [
 \(.\)], [
-   \1])  */])
+$3\1])$4])
+
+
+# b4_c_comment(TEXT, [PREFIX])
+# ----------------------------
+# Put TEXT in comment.  Avoid trailing spaces: don't indent empty lines.
+# Avoid adding indentation to the first line, as the indentation comes
+# from "/*".  That's why we don't patsubst([$1], [^\(.\)], [   \1]).
+#
+# Prefix all the output lines with PREFIX.
+m4_define([b4_c_comment],
+[b4_comment_([$1], [$2/* ], [$2   ], [$2  */])])
+
+
+# b4_comment(TEXT, [PREFIX])
+# --------------------------
+# By default, C comments.
+m4_define([b4_comment], [b4_c_comment($@)])
+
 
 # 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.
+# api.push-pull.
 m4_define([b4_identification],
 [[/* Identify Bison output.  */
 #define YYBISON 1
@@ -55,7 +76,7 @@ m4_define([b4_identification],
 #define YYPULL ]b4_pull_flag])[
 
 /* Using locations.  */
-#define YYLSP_NEEDED ]b4_locations_flag[
+#define YYLSP_NEEDED ]b4_locations_if([1], [0])[
 ]])
 
 
@@ -137,6 +158,17 @@ m4_define([b4_int_type_for],
 [b4_int_type($1_min, $1_max)])
 
 
+# b4_table_value_equals(TABLE, VALUE, LITERAL)
+# --------------------------------------------
+# Without inducing a comparison warning from the compiler, check if the
+# literal value LITERAL equals VALUE from table TABLE, which must have
+# TABLE_min and TABLE_max defined.  YYID must be defined as an identity
+# function that suppresses warnings about constant conditions.
+m4_define([b4_table_value_equals],
+[m4_if(m4_eval($3 < m4_indir([b4_]$1[_min])
+               || m4_indir([b4_]$1[_max]) < $3), [1],
+       [[YYID (0)]],
+       [[((]$2[) == (]$3[))]])])
 
 ## ---------##
 ## Values.  ##
@@ -149,6 +181,17 @@ m4_define([b4_int_type_for],
 m4_define([b4_null], [0])
 
 
+# b4_integral_parser_table_define(TABLE-NAME, CONTENT, COMMENT)
+# -------------------------------------------------------------
+# Define "yy<TABLE-NAME>" which contents is CONTENT.
+m4_define([b4_integral_parser_table_define],
+[m4_ifval([$3], [b4_c_comment([$3], [  ])
+])dnl
+static const b4_int_type_for([$2]) yy$1[[]] =
+{
+  $2
+};dnl
+])
 
 
 ## ------------------------- ##
@@ -159,7 +202,7 @@ m4_define([b4_null], [0])
 # -----------------------------------------
 # Output the definition of this token as #define.
 m4_define([b4_token_define],
-[#define b4_percent_define_get([token.prefix])$1 $2
+[#define b4_percent_define_get([api.tokens.prefix])$1 $2
 ])
 
 
@@ -177,7 +220,7 @@ m4_map([b4_token_define], [$@])])
 # ---------------------------------------
 # Output the definition of this token as an enum.
 m4_define([b4_token_enum],
-[b4_percent_define_get([token.prefix])$1 = $2])
+[b4_percent_define_get([api.tokens.prefix])$1 = $2])
 
 
 # b4_token_enums(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER)
@@ -311,7 +354,7 @@ m4_define([b4_c_knr_formal_decl],
 # -----------------------------------------------------------
 # Declare the function NAME.
 m4_define([b4_c_function_decl],
-[#if defined __STDC__ || defined __cplusplus
+[#if b4_c_modern
 b4_c_ansi_function_decl($@)
 #else
 $2 $1 ();
@@ -373,23 +416,6 @@ $2
 b4_syncline([@oline@], [@ofile@])
     break;])
 
-# b4_symbol_actions(FILENAME, LINENO,
-#                   SYMBOL-TAG, SYMBOL-NUM,
-#                   SYMBOL-ACTION, SYMBOL-TYPENAME)
-# -------------------------------------------------
-m4_define([b4_symbol_actions],
-[m4_pushdef([b4_dollar_dollar],
-   [b4_symbol_value([(*yyvaluep)], [$6])])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)
 # -------------------------------------------
@@ -421,8 +447,8 @@ b4_parse_param_use[]dnl
 
   switch (yytype)
     {
-]m4_map([b4_symbol_actions], m4_defn([b4_symbol_destructors]))[
-      default:
+]b4_symbol_foreach([b4_symbol_destructor])dnl
+[      default:
        break;
     }
 }]dnl
@@ -462,7 +488,7 @@ b4_parse_param_use[]dnl
 # endif
   switch (yytype)
     {
-]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl
+]b4_symbol_foreach([b4_symbol_printer])dnl
 [      default:
        break;
     }