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7172e23e8f
instead of passing a yylexp argument to yypull_parse, and don't generate yypull_parse or yyparse unless %push-pull-parser is declared. Discussed starting at <http://lists.gnu.org/archive/html/bison-patches/2006-12/msg00163.html>. * data/bison.m4 (b4_pull_if): New. * data/c.m4 (b4_identification): Define YYPULL similar to YYPUSH. * data/push.c: Improve M4 quoting a little. (b4_generate_macro_args, b4_parenthesize): Remove. (yyparse): If there's a b4_prefix, #define this to b4_prefix[parse] any time a pull parser is requested. Don't #define this as a wrapper around yypull_parse. Instead, when both push and pull are requested, make it a function that does that same thing. (yypull_parse): If there's a b4_prefix, #define this to b4_prefix[pull_parse] when both push and pull are requested. Don't define this as a function unless both push and pull are requested. Remove the yylexp argument and hard-code yylex invocation instead. * etc/bench.pl.in (bench_grammar): Use %push-pull-parser instead of %push-parser. * src/getargs.c (pull_parser): New global initialized to true. * getargs.h (pull_parser): extern it. * src/output.c (prepare): Insert pull_flag muscle. * src/parse-gram.y (PERCENT_PUSH_PULL_PARSER): New token. (prologue_declaration): Set both push_parser and pull_parser = true for %push-pull-parser. Set push_parser = true and pull_parser = false for %push-parser. * src/scan-gram.l: Don't accept %push_parser as an alternative to %push-parser since there's no backward-compatibility concern here. Scan %push-pull-parser. * tests/calc.at (Simple LALR(1) Calculator): Use %push-pull-parser instead of %push-parser. * tests/headers.at (export YYLTYPE): Make yylex static, and don't prototype it in the module that calls yyparse. * tests/input.at (Torturing the Scanner): Likewise. * tests/local.at (AT_PUSH_IF): Check for %push-pull-parser as well.
140 lines
2.6 KiB
Plaintext
140 lines
2.6 KiB
Plaintext
# Bison Parser Headers. -*- Autotest -*-
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# Copyright (C) 2001, 2002, 2006 Free Software Foundation, Inc.
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2, or (at your option)
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# any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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# 02110-1301, USA.
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AT_BANNER([[Parser Headers.]])
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## ---------------------- ##
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## %union and --defines. ##
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## ---------------------- ##
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AT_SETUP([%union and --defines])
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AT_DATA([input.y],
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[%union
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{
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int integer;
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char *string ;
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}
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%%
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exp: {};
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])
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AT_CHECK([bison --defines input.y])
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AT_CLEANUP
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## --------------------- ##
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## Invalid CPP headers. ##
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## --------------------- ##
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# AT_TEST_CPP_GUARD_H([INPUT-FILE-BASE)
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# -------------------------------------
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m4_define([AT_TEST_CPP_GUARD_H],
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[AT_SETUP([Invalid CPP guards: $1])
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# Possibly create inner directories.
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dirname=`AS_DIRNAME([$1])`
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AS_MKDIR_P([$dirname])
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AT_DATA_GRAMMAR([$1.y],
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[%{
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#include <$1.h>
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void yyerror (const char *);
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int yylex (void);
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%}
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%%
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dummy:;
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%%
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#include <$1.h>
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])
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AT_CHECK([bison --defines=$1.h --output=y.tab.c $1.y])
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AT_COMPILE([y.tab.o], [-I. -c y.tab.c])
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AT_CLEANUP
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])
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AT_TEST_CPP_GUARD_H([input/input])
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AT_TEST_CPP_GUARD_H([9foo])
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## ---------------- ##
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## export YYLTYPE. ##
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## ---------------- ##
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AT_SETUP([export YYLTYPE])
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AT_DATA_GRAMMAR([input.y],
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[%locations
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%name-prefix "my_"
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%{
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#include <stdio.h>
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#include <stdlib.h>
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static int
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my_lex (void)
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{
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return EOF;
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}
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static void
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my_error (const char *msg)
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{
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fprintf (stderr, "%s\n", msg);
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}
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%}
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%%
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exp:;
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])
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AT_CHECK([bison --defines -o input.c input.y])
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# YYLTYPE should be defined, and MY_LLOC declared.
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AT_DATA([caller.c],
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[[#include "input.h"
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YYLTYPE *my_llocp = &my_lloc;
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#ifndef YYPUSH_DECLS
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int my_parse (void);
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#endif
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int
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main (void)
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{
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return my_parse ();
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}
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]])
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# Link and execute, just to make sure everything is fine (and in
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# particular, that MY_LLOC is indeed defined somewhere).
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AT_COMPILE([caller.o], [-c caller.c])
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AT_COMPILE([input.o], [-c input.c])
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AT_COMPILE([caller], [caller.o input.o])
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AT_PARSER_CHECK([./caller])
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AT_CLEANUP
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