X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/619404e3fd795d9a0d7673de5d618adb5a9501a9..68cae94e0b4e83246787fc5a413f085513ae9160:/data/c.m4 diff --git a/data/c.m4 b/data/c.m4 index 79ce9767..6406b9b0 100644 --- a/data/c.m4 +++ b/data/c.m4 @@ -1,7 +1,7 @@ m4_divert(-1) -*- Autoconf -*- # C M4 Macros for Bison. -# Copyright (C) 2002, 2004 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 @@ -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 -# 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 - 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 @@ -53,6 +53,9 @@ m4_define([b4_identification], [/* Identify Bison output. */ [#]define YYBISON 1 +/* Bison version. */ +[#]define YYBISON_VERSION "b4_version" + /* Skeleton name. */ [#]define YYSKELETON_NAME b4_skeleton @@ -93,6 +96,26 @@ 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_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. ## @@ -119,7 +142,7 @@ m4_define([b4_int_type], m4_eval([0 <= $1]), [1], [unsigned int], - [int])]) + [int])]) # 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], + [$2])]) + + # b4_location_if(IF-TRUE, IF-FALSE) # --------------------------------- # Expand IF-TRUE, if locations are used, IF-FALSE otherwise. @@ -166,6 +198,16 @@ m4_define([b4_token_define], ]) +# b4_token_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER) +# ------------------------------------------------------- +# Output the definition of the tokens (if there are) as #defines. +m4_define([b4_token_defines], +[m4_if([$@], [[]], [], +[/* Tokens. */ +m4_map([b4_token_define], [$@])]) +]) + + # b4_token_enum(TOKEN-NAME, TOKEN-NUMBER) # --------------------------------------- # Output the definition of this token as an enum. @@ -173,10 +215,10 @@ m4_define([b4_token_enum], [$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 @@ -189,8 +231,14 @@ m4_map_sep([ b4_token_enum], [, [$@]) }; #endif -m4_map([b4_token_define], [$@]) -]) +])]) + + +# 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], [$@]) ## --------------------------------------------- ## +# b4_modern_c +# ----------- +# A predicate useful in #if to determine whether C is ancient or modern. +# +# If __STDC__ is defined, the compiler is modern. IBM xlc 7.0 when run +# as 'cc' doesn't define __STDC__ (or __STDC_VERSION__) for pedantic +# reasons, but it defines __C99__FUNC__ so check that as well. +# Microsoft C normally doesn't define these macros, but it defines _MSC_VER. +# Consider a C++ compiler to be modern if it defines __cplusplus. +# +m4_define([b4_c_modern], + [[(defined (__STDC__) || defined (__C99__FUNC__) \ + || defined (__cplusplus) || defined (_MSC_VER))]]) + # b4_c_function_def(NAME, RETURN-VALUE, [DECL1, NAME1], ...) # ---------------------------------------------------------- # Declare the function NAME. m4_define([b4_c_function_def], -[#if defined (__STDC__) || defined (__cplusplus) +[#if b4_c_modern b4_c_ansi_function_def($@) #else $2 @@ -314,7 +376,6 @@ m4_define([b4_c_arg], ## Synclines. ## ## ----------- ## - # b4_syncline(LINE, FILE) # ----------------------- m4_define([b4_syncline], @@ -322,6 +383,11 @@ m4_define([b4_syncline], [[#]line $1 $2])]) + +## -------------- ## +## User actions. ## +## -------------- ## + # b4_symbol_actions(FILENAME, LINENO, # SYMBOL-TAG, SYMBOL-NUM, # SYMBOL-ACTION, SYMBOL-TYPENAME) @@ -345,22 +411,25 @@ 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. -m4_define([b4_yydestruct_generate], +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]]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); @@ -375,40 +444,36 @@ m4_define([b4_yydestruct_generate], ]) -# 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. -m4_define([b4_yysymprint_generate], -[[/*--------------------------------. +m4_define_default([b4_yy_symbol_print_generate], +[[ +/*--------------------------------. | Print this symbol on YYOUTPUT. | `--------------------------------*/ -]$1([yysymprint], +/*ARGSUSED*/ +]$1([yy_symbol_value_print], [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 -[ - if (yytype < YYNTOKENS) - YYFPRINTF (yyoutput, "token %s (", yytname[yytype]); - else - YYFPRINTF (yyoutput, "nterm %s (", yytname[yytype]); - -]b4_location_if([ YY_LOCATION_PRINT (yyoutput, *yylocationp); - fprintf (yyoutput, ": "); -])dnl -[ -# ifdef YYPRINT +b4_parse_param_use[]dnl +[# ifdef YYPRINT if (yytype < YYNTOKENS) YYPRINT (yyoutput, yytoknum[yytype], *yyvaluep); +# else + YYUSE (yyoutput); # endif switch (yytype) { @@ -416,6 +481,31 @@ b4_location_if([ (void) yylocationp; [ 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 +])