X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/0991e29b75f192570b6fac1ba23657ab4f3509ee..544b863511c3cb996d05ccabdbf6be92b36c9b68:/data/c.m4 diff --git a/data/c.m4 b/data/c.m4 index 518c05b6..14db807b 100644 --- a/data/c.m4 +++ b/data/c.m4 @@ -1,8 +1,8 @@ -*- Autoconf -*- # C M4 Macros for Bison. -# Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008 Free Software -# Foundation, Inc. + +# 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 @@ -54,7 +54,7 @@ m4_define([b4_comment], [b4_c_comment($@)]) # ----------------- # 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 @@ -75,7 +75,7 @@ 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])[ ]]) @@ -120,11 +120,13 @@ m4_popdef([$2])dnl m4_popdef([$1])dnl ])]) -# b4_parse_param_use -# ------------------ -# `YYUSE' all the parse-params. +# b4_parse_param_use([VAL], [LOC]) +# -------------------------------- +# `YYUSE' VAL, LOC if locations are enabled, and all the parse-params. m4_define([b4_parse_param_use], -[b4_parse_param_for([Decl], [Formal], [ YYUSE (Formal); +[m4_ifvaln([$1], [ YYUSE([$1]);])dnl +b4_locations_if([m4_ifvaln([$2], [ YYUSE ([$2]);])])dnl +b4_parse_param_for([Decl], [Formal], [ YYUSE (Formal); ])dnl ]) @@ -146,7 +148,7 @@ m4_define([b4_int_type], m4_eval([0 <= $1]), [1], [unsigned int], - [int])]) + [int])]) # b4_int_type_for(NAME) @@ -157,24 +159,49 @@ 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. ## ## ---------## -# 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]) +# b4_null_define +# -------------- +# Portability issues: define a YY_NULL appropriate for the current +# language (C, C++98, or C++11). +m4_define([b4_null_define], +[# ifndef YY_NULL +# if defined __cplusplus && 201103L <= __cplusplus +# define YY_NULL nullptr +# else +# define YY_NULL 0 +# endif +# endif[]dnl +]) + + +# b4_null +# ------- +# Return a null pointer constant. +m4_define([b4_null], [YY_NULL]) -# b4_table_define(TABLE-NAME, CONTENT, COMMENT) -# --------------------------------------------- +# b4_integral_parser_table_define(TABLE-NAME, CONTENT, COMMENT) +# ------------------------------------------------------------- # Define "yy" which contents is CONTENT. -m4_define([b4_table_define], -[m4_ifval([$3], [b4_c_comment([$3], [ ]) -])dnl +m4_define([b4_integral_parser_table_define], +[m4_ifvaln([$3], [b4_c_comment([$3], [ ])])dnl static const b4_int_type_for([$2]) yy$1[[]] = { $2 @@ -190,7 +217,7 @@ static const b4_int_type_for([$2]) yy$1[[]] = # ----------------------------------------- # 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 $2 ]) @@ -208,7 +235,7 @@ m4_map([b4_token_define], [$@])]) # --------------------------------------- # 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 = $2]) # b4_token_enums(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER) @@ -224,7 +251,7 @@ m4_define([b4_token_enums], enum yytokentype { m4_map_sep([ b4_token_enum], [, ], - [$@]) + [$@]) }; #endif ])]) @@ -303,7 +330,7 @@ $1 (b4_c_ansi_formals(m4_shift2($@)))[]dnl m4_define([b4_c_ansi_formals], [m4_if([$#], [0], [void], [$#$1], [1], [void], - [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])]) + [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])]) m4_define([b4_c_ansi_formal], [$1]) @@ -324,9 +351,9 @@ m4_define([b4_c_knr_formal_name], # Output the K&R argument declarations. m4_define([b4_c_knr_formal_decls], [m4_map_sep([b4_c_knr_formal_decl], - [ + [ ], - [$@])]) + [$@])]) m4_define([b4_c_knr_formal_decl], [ $1;]) @@ -342,7 +369,7 @@ m4_define([b4_c_knr_formal_decl], # ----------------------------------------------------------- # Declare the function NAME. m4_define([b4_c_function_decl], -[#if defined __STDC__ || defined __cplusplus +[#if b4_c_modern b4_c_ansi_function_decl($@) #else $2 $1 (); @@ -404,22 +431,14 @@ $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_predicate_case(LABEL, CONDITIONS) +# ------------------------------------ +m4_define([b4_predicate_case], +[ case $1: + if (! ($2)) YYERROR; b4_syncline([@oline@], [@ofile@]) - break; -m4_popdef([b4_at_dollar])dnl -m4_popdef([b4_dollar_dollar])dnl -]) + break;]) # b4_yydestruct_generate(FUNCTION-DECLARATOR) @@ -441,20 +460,16 @@ m4_define_default([b4_yydestruct_generate], 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) +]b4_parse_param_use([yyvaluep], [yylocationp])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; +]b4_symbol_foreach([b4_symbol_destructor])dnl +[ default: + break; } }]dnl ]) @@ -474,28 +489,27 @@ m4_define_default([b4_yy_symbol_print_generate], /*ARGSUSED*/ ]$1([yy_symbol_value_print], [static void], - [[FILE *yyoutput], [yyoutput]], - [[int yytype], [yytype]], - [[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl + [[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 +]b4_parse_param_use([yyoutput], [yylocationp])dnl +[ if (!yyvaluep) + return;] +dnl glr.c does not feature yytoknum. +m4_if(b4_skeleton, ["yacc.c"], +[[# ifdef YYPRINT if (yytype < YYNTOKENS) YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); -# else - YYUSE (yyoutput); # endif - switch (yytype) +]])dnl +[ switch (yytype) { -]m4_map([b4_symbol_actions], m4_defn([b4_symbol_printers]))dnl +]b4_symbol_foreach([b4_symbol_printer])dnl [ default: - break; + break; } } @@ -506,9 +520,9 @@ b4_parse_param_use[]dnl ]$1([yy_symbol_print], [static void], - [[FILE *yyoutput], [yyoutput]], - [[int yytype], [yytype]], - [[YYSTYPE const * const yyvaluep], [yyvaluep]][]dnl + [[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]))[ {