# Exercising Bison on conflicts. -*- Autotest -*-
-# Copyright (C) 2002 Free Software Foundation, Inc.
+
+# Copyright (C) 2002, 2003, 2004, 2005 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
# 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.
AT_BANNER([[Conflicts.]])
e: 'e' | /* Nothing. */;
]])
-AT_CHECK([bison input.y -o input.c], 0, [],
-[[input.y:4.8: warning: rule never reduced because of conflicts: e: /* empty */
+AT_CHECK([bison -o input.c input.y], 0, [],
+[[input.y:4.9: warning: rule never reduced because of conflicts: e: /* empty */
]])
AT_CLEANUP
AT_SETUP([%nonassoc and eof])
-AT_DATA([input.y],
+AT_DATA_GRAMMAR([input.y],
[[
%{
-#include <config.h>
-/* We don't need a perfect malloc for these tests. */
-#undef malloc
#include <stdio.h>
-
-#if STDC_HEADERS
-# include <stdlib.h>
-#endif
+#include <stdlib.h>
+#include <string.h>
#define YYERROR_VERBOSE 1
static void
yyerror (const char *msg)
{
fprintf (stderr, "%s\n", msg);
- exit (1);
}
/* The current argument. */
-static const char *input = NULL;
+static const char *input;
static int
yylex (void)
{
- /* No token stands for end of file. */
- if (input && *input)
- return *input++;
- else
- return 0;
+ static size_t toknum;
+ if (! (toknum <= strlen (input)))
+ abort ();
+ return input[toknum++];
}
%}
int
main (int argc, const char *argv[])
{
- if (argc > 1)
- input = argv[1];
+ input = argc <= 1 ? "" : argv[1];
return yyparse ();
}
]])
# Specify the output files to avoid problems on different file systems.
-AT_CHECK([bison input.y -o input.c])
+AT_CHECK([bison -o input.c input.y])
AT_COMPILE([input])
AT_PARSER_CHECK([./input '0<0'])
# no one has ever spotted it! The messages are *wrong*: there should
# be nothing there, it should be expected eof.
AT_PARSER_CHECK([./input '0<0<0'], [1], [],
- [parse error, unexpected '<', expecting '<' or '>'
+ [syntax error, unexpected '<', expecting '<' or '>'
])
AT_PARSER_CHECK([./input '0>0'])
AT_PARSER_CHECK([./input '0>0>0'], [1], [],
- [parse error, unexpected '>', expecting '<' or '>'
+ [syntax error, unexpected '>', expecting '<' or '>'
])
AT_PARSER_CHECK([./input '0<0>0'], [1], [],
- [parse error, unexpected '>', expecting '<' or '>'
+ [syntax error, unexpected '>', expecting '<' or '>'
])
AT_CLEANUP
exp: exp OP exp | NUM;
]])
-AT_CHECK([bison input.y -o input.c --report=all], 0, [],
-[input.y: warning: 1 shift/reduce conflict
+AT_CHECK([bison -o input.c --report=all input.y], 0, [],
+[input.y: conflicts: 1 shift/reduce
])
# Check the contents of the report.
AT_CHECK([cat input.output], [],
-[[State 5 contains 1 shift/reduce conflict.
+[[State 5 conflicts: 1 shift/reduce
Grammar
exp: exp OP exp | NUM;
]])
-AT_CHECK([bison input.y -o input.c --report=all])
+AT_CHECK([bison -o input.c --report=all input.y])
# Check the contents of the report.
AT_CHECK([cat input.output], [],
1 | exp OP exp . [$end, OP]
$default reduce using rule 1 (exp)
+
Conflict between rule 1 and token OP resolved as reduce (%left OP).
]])
%%
]])
-AT_CHECK([bison input.y -o input.c --report=all], 0, [],
-[[input.y: warning: 1 reduce/reduce conflict
-input.y:4.4-8: warning: rule never reduced because of conflicts: id: '0'
+AT_CHECK([bison -o input.c --report=all input.y], 0, [],
+[[input.y: conflicts: 1 reduce/reduce
+input.y:4.6-8: warning: rule never reduced because of conflicts: id: '0'
]])
# Check the contents of the report.
4 id: '0'
-State 1 contains 1 reduce/reduce conflict.
+State 1 conflicts: 1 reduce/reduce
Grammar
exp: exp OP exp | NUM;
]])
-AT_CHECK([bison input.y -o input.c], 1, [],
-[input.y: warning: 1 shift/reduce conflict
+AT_CHECK([bison -o input.c input.y], 1, [],
+[input.y: conflicts: 1 shift/reduce
input.y: expected 0 shift/reduce conflicts
])
AT_CLEANUP
exp: exp OP exp | NUM;
]])
-AT_CHECK([bison input.y -o input.c])
+AT_CHECK([bison -o input.c input.y])
AT_CLEANUP
exp: exp OP exp | NUM;
]])
-AT_CHECK([bison input.y -o input.c], 1, [],
-[input.y: warning: 1 shift/reduce conflict
+AT_CHECK([bison -o input.c input.y], 1, [],
+[input.y: conflicts: 1 shift/reduce
input.y: expected 2 shift/reduce conflicts
])
AT_CLEANUP
+
+
+## ------------------------------ ##
+## %expect with reduce conflicts ##
+## ------------------------------ ##
+
+AT_SETUP([%expect with reduce conflicts])
+
+AT_DATA([input.y],
+[[%expect 0
+%%
+program: a 'a' | a a;
+a: 'a';
+]])
+
+AT_CHECK([bison -o input.c input.y], 1, [],
+[input.y: conflicts: 1 reduce/reduce
+input.y: expected 0 reduce/reduce conflicts
+])
+AT_CLEANUP
+
+
+## ------------------------------- ##
+## %no-default-prec without %prec ##
+## ------------------------------- ##
+
+AT_SETUP([%no-default-prec without %prec])
+
+AT_DATA([[input.y]],
+[[%left '+'
+%left '*'
+
+%%
+
+%no-default-prec;
+
+e: e '+' e
+ | e '*' e
+ | '0'
+ ;
+]])
+
+AT_CHECK([bison -o input.c input.y], 0, [],
+[[input.y: conflicts: 4 shift/reduce
+]])
+AT_CLEANUP
+
+
+## ---------------------------- ##
+## %no-default-prec with %prec ##
+## ---------------------------- ##
+
+AT_SETUP([%no-default-prec with %prec])
+
+AT_DATA([[input.y]],
+[[%left '+'
+%left '*'
+
+%%
+
+%no-default-prec;
+
+e: e '+' e %prec '+'
+ | e '*' e %prec '*'
+ | '0'
+ ;
+]])
+
+AT_CHECK([bison -o input.c input.y])
+AT_CLEANUP
+
+
+## ---------------- ##
+## %default-prec ##
+## ---------------- ##
+
+AT_SETUP([%default-prec])
+
+AT_DATA([[input.y]],
+[[%left '+'
+%left '*'
+
+%%
+
+%default-prec;
+
+e: e '+' e
+ | e '*' e
+ | '0'
+ ;
+]])
+
+AT_CHECK([bison -o input.c input.y])
+AT_CLEANUP
projects / bison.git / blobdiff