X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/7ec2d4cd3932bfba78e9fbd52509d9f80b61c8ef..b931235eb9e55277e0147443f916c0f73ad697c4:/data/c.m4 diff --git a/data/c.m4 b/data/c.m4 index b67a4438..46bacfcc 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 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 ## ---------------- ## @@ -28,8 +28,9 @@ m4_divert(-1) -*- Autoconf -*- m4_define([b4_copyright], [/* A Bison parser, made by GNU Bison b4_version. */ -/* $1, - Copyright (C) $2 Free Software Foundation, Inc. +/* $1 + +m4_text_wrap([Copyright (C) $2 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 @@ -43,8 +44,21 @@ 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. */ + +/* As a special exception, you may create a larger work that contains + part or all of the Bison parser skeleton and distribute that work + under terms of your choice, so long as that work isn't itself a + parser generator using the skeleton or a modified version thereof + as a parser skeleton. Alternatively, if you modify or redistribute + the parser skeleton itself, you may (at your option) remove this + special exception, which will cause the skeleton and the resulting + Bison output files to be licensed under the GNU General Public + License without this special exception. + + This special exception was added by the Free Software Foundation in + version 2.2 of Bison. */]) # b4_identification @@ -53,11 +67,14 @@ m4_define([b4_identification], [/* Identify Bison output. */ [#]define YYBISON 1 +/* Bison version. */ +[#]define YYBISON_VERSION "b4_version" + /* Skeleton name. */ [#]define YYSKELETON_NAME b4_skeleton /* Pure parsers. */ -[#]define YYPURE b4_pure +[#]define YYPURE b4_pure_flag /* Using locations. */ [#]define YYLSP_NEEDED b4_locations_flag @@ -93,6 +110,26 @@ 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([$1])dnl +])]) + +# b4_parse_param_use +# ------------------ +# `YYUSE' all the parse-params. +m4_define([b4_parse_param_use], +[b4_parse_param_for([Decl], [Formal], [ YYUSE (Formal); +])dnl +]) ## ------------ ## ## Data Types. ## @@ -114,12 +151,12 @@ m4_define([b4_int_type], [m4_if(b4_ints_in($@, [0], [255]), [1], [unsigned char], b4_ints_in($@, [-128], [127]), [1], [signed char], - b4_ints_in($@, [0], [65535]), [1], [unsigned short], - b4_ints_in($@, [-32768], [32767]), [1], [short], + b4_ints_in($@, [0], [65535]), [1], [unsigned short int], + b4_ints_in($@, [-32768], [32767]), [1], [short int], m4_eval([0 <= $1]), [1], [unsigned int], - [int])]) + [int])]) # b4_int_type_for(NAME) @@ -134,23 +171,43 @@ m4_define([b4_int_type_for], ## Decoding options. ## ## ------------------ ## - -# b4_location_if(IF-TRUE, IF-FALSE) -# --------------------------------- -# Expand IF-TRUE, if locations are used, IF-FALSE otherwise. -m4_define([b4_location_if], -[m4_if(b4_locations_flag, [1], - [$1], - [$2])]) +# b4_flag_if(FLAG, IF-TRUE, IF-FALSE) +# ----------------------------------- +# Run IF-TRUE if b4_FLAG_flag is 1, IF-FALSE if FLAG is 0, otherwise fail. +m4_define([b4_flag_if], +[m4_case(b4_$1_flag, + [0], [$3], + [1], [$2], + [m4_fatal([invalid $1 value: ]$1)])]) -# b4_pure_if(IF-TRUE, IF-FALSE) +# b4_define_flag_if(FLAG) +# ----------------------- +# Define "b4_FLAG_if(IF-TRUE, IF-FALSE)" that depends on the +# value of the Boolean FLAG. +m4_define([b4_define_flag_if], +[_b4_define_flag_if($[1], $[2], [$1])]) + +# _b4_define_flag_if($1, $2, FLAG) +# -------------------------------- +# This macro works around the impossibility to define macros +# inside macros, because issuing `[$1]' is not possible in M4 :(. +# This sucks hard, GNU M4 should really provide M5 like $$1. +m4_define([_b4_define_flag_if], +[m4_if([$1$2], $[1]$[2], [], + [m4_fatal([$0: Invalid arguments: $@])])dnl +m4_define([b4_$3_if], + [b4_flag_if([$3], [$1], [$2])])]) + + +# b4_FLAG_if(IF-TRUE, IF-FALSE) # ----------------------------- -# Expand IF-TRUE, if %pure-parser, IF-FALSE otherwise. -m4_define([b4_pure_if], -[m4_if(b4_pure, [1], - [$1], - [$2])]) +# Expand IF-TRUE, if FLAG is true, IF-FALSE otherwise. +b4_define_flag_if([defines]) # Whether headers are requested. +b4_define_flag_if([error_verbose]) # Wheter error are verbose. +b4_define_flag_if([locations]) # Whether locations are tracked. +b4_define_flag_if([pure]) # Whether the interface is pure. +b4_define_flag_if([yacc]) # Whether POSIX Yacc is emulated. @@ -166,6 +223,16 @@ m4_define([b4_token_define], ]) +# b4_token_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER) +# ------------------------------------------------------- +# Output the definition of the tokens (if there are) as #defines. +m4_define([b4_token_defines], +[m4_if([$@], [[]], [], +[/* Tokens. */ +m4_map([b4_token_define], [$@])]) +]) + + # b4_token_enum(TOKEN-NAME, TOKEN-NUMBER) # --------------------------------------- # Output the definition of this token as an enum. @@ -173,10 +240,10 @@ 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 @@ -186,11 +253,18 @@ m4_define([b4_token_defines], enum yytokentype { m4_map_sep([ b4_token_enum], [, ], - [$@]) + [$@]) }; #endif -m4_map([b4_token_define], [$@]) -]) +])]) + + +# b4_token_enums_defines(LIST-OF-PAIRS-TOKEN-NAME-TOKEN-NUMBER) +# ------------------------------------------------------------- +# Output the definition of the tokens (if there are any) as enums and, if POSIX +# Yacc is enabled, as #defines. +m4_define([b4_token_enums_defines], +[b4_token_enums($@)b4_yacc_if([b4_token_defines($@)], []) ]) @@ -200,11 +274,25 @@ m4_map([b4_token_define], [$@]) ## --------------------------------------------- ## +# 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 @@ -228,9 +316,9 @@ $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_map_sep([b4_c_ansi_formal], [, ], [$@])])]) + [], [void], + [[]], [void], + [m4_map_sep([b4_c_ansi_formal], [, ], [$@])])]) m4_define([b4_c_ansi_formal], [$1]) @@ -251,9 +339,9 @@ m4_define([b4_c_knr_formal_name], # Output the K&R argument declarations. m4_define([b4_c_knr_formal_decls], [m4_map_sep([b4_c_knr_formal_decl], - [ + [ ], - [$@])]) + [$@])]) m4_define([b4_c_knr_formal_decl], [ $1;]) @@ -269,7 +357,7 @@ m4_define([b4_c_knr_formal_decl], # ----------------------------------------------------------- # Declare the function NAME. m4_define([b4_c_function_decl], -[#if defined (__STDC__) || defined (__cplusplus) +[#if defined __STDC__ || defined __cplusplus b4_c_ansi_function_decl($@) #else $2 $1 (); @@ -314,9 +402,135 @@ m4_define([b4_c_arg], ## Synclines. ## ## ----------- ## - # b4_syncline(LINE, FILE) # ----------------------- m4_define([b4_syncline], -[m4_if(b4_synclines_flag, 1, - [[#]line $1 $2])]) +[b4_flag_if([synclines], [[#]line $1 $2])]) + + + +## -------------- ## +## User actions. ## +## -------------- ## + +# 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 +])