X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/08af01c2fc26eeb77afe3a667dded68c52ea3c37..9874f80b2e813a8ad8e5562dbbaa30ecafd5e7d8:/data/c.m4 diff --git a/data/c.m4 b/data/c.m4 index ffab4970..e0e58cdb 100644 --- a/data/c.m4 +++ b/data/c.m4 @@ -1,22 +1,21 @@ -*- Autoconf -*- # C M4 Macros for Bison. -# Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc. -# This program is free software; you can redistribute it and/or modify +# Copyright (C) 2002, 2004-2012 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 2 of the License, or +# 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, write to the Free Software -# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -# 02110-1301 USA +# along with this program. If not, see . ## ---------------- ## ## Identification. ## @@ -30,28 +29,31 @@ 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 +[[/* Identify Bison output. */ +#define YYBISON 1 /* Bison version. */ -[#]define YYBISON_VERSION "b4_version" +#define YYBISON_VERSION "]b4_version[" /* Skeleton name. */ -[#]define YYSKELETON_NAME b4_skeleton +#define YYSKELETON_NAME ]b4_skeleton[]m4_ifdef([b4_pure_flag], [[ /* Pure parsers. */ -[#]define YYPURE b4_pure_flag +#define YYPURE ]b4_pure_flag])[]m4_ifdef([b4_push_flag], [[ /* Push parsers. */ -[#]define YYPUSH b4_push_flag +#define YYPUSH ]b4_push_flag])[]m4_ifdef([b4_pull_flag], [[ /* Pull parsers. */ -[#]define YYPULL b4_pull_flag +#define YYPULL ]b4_pull_flag])[ /* Using locations. */ -[#]define YYLSP_NEEDED b4_locations_flag -]) +#define YYLSP_NEEDED ]b4_locations_flag[ +]]) ## ---------------- ## @@ -79,7 +81,7 @@ m4_define([b4_user_args], # 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) # b4_parse_param_for(DECL, FORMAL, BODY) @@ -88,7 +90,7 @@ b4_parse_param)) # 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([$1], m4_unquote(m4_car($1_$2)))dnl m4_pushdef([$2], m4_shift($1_$2))dnl $3[]dnl m4_popdef([$2])dnl @@ -131,6 +133,19 @@ m4_define([b4_int_type], 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[) == (]$3[))]])]) + ## ---------## ## Values. ## ## ---------## @@ -142,6 +157,8 @@ m4_define([b4_int_type_for], m4_define([b4_null], [0]) + + ## ------------------------- ## ## Assigning token numbers. ## ## ------------------------- ## @@ -158,7 +175,7 @@ m4_define([b4_token_define], # ------------------------------------------------------- # Output the definition of the tokens (if there are) as #defines. m4_define([b4_token_defines], -[m4_if([$@], [[]], [], +[m4_if([$#$1], [1], [], [/* Tokens. */ m4_map([b4_token_define], [$@])]) ]) @@ -175,7 +192,7 @@ m4_define([b4_token_enum], # ----------------------------------------------------- # Output the definition of the tokens (if there are) as enums. m4_define([b4_token_enums], -[m4_if([$@], [[]], [], +[m4_if([$#$1], [1], [], [/* Tokens. */ #ifndef YYTOKENTYPE # define YYTOKENTYPE @@ -227,8 +244,8 @@ m4_define([b4_c_function_def], b4_c_ansi_function_def($@) #else $2 -$1 (b4_c_knr_formal_names(m4_shiftn(2, $@))) -b4_c_knr_formal_decls(m4_shiftn(2, $@)) +$1 (b4_c_knr_formal_names(m4_shift2($@))) +b4_c_knr_formal_decls(m4_shift2($@)) #endif[]dnl ]) @@ -238,7 +255,7 @@ b4_c_knr_formal_decls(m4_shiftn(2, $@)) # Declare the function NAME in ANSI. m4_define([b4_c_ansi_function_def], [$2 -$1 (b4_c_ansi_formals(m4_shiftn(2, $@)))[]dnl +$1 (b4_c_ansi_formals(m4_shift2($@)))[]dnl ]) @@ -246,9 +263,8 @@ $1 (b4_c_ansi_formals(m4_shiftn(2, $@)))[]dnl # -------------------------------------- # Output the arguments ANSI-C definition. m4_define([b4_c_ansi_formals], -[m4_case([$@], - [], [void], - [[]], [void], +[m4_if([$#], [0], [void], + [$#$1], [1], [void], [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])]) m4_define([b4_c_ansi_formal], @@ -300,7 +316,7 @@ $2 $1 (); # ---------------------------------------------------------------- # Declare the function NAME. m4_define([b4_c_ansi_function_decl], -[$2 $1 (b4_c_ansi_formals(m4_shiftn(2, $@)));[]dnl +[$2 $1 (b4_c_ansi_formals(m4_shift2($@)));[]dnl ]) @@ -315,7 +331,7 @@ m4_define([b4_c_ansi_function_decl], # ----------------------------------------------------------- # Call the function NAME with arguments NAME1, NAME2 etc. m4_define([b4_c_function_call], -[$1 (b4_c_args(m4_shiftn(2, $@)))[]dnl +[$1 (b4_c_args(m4_shift2($@)))[]dnl ])