# Bison Regressions. -*- Autotest -*-
# Copyright 2001 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
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# 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.
AT_BANNER([[Regression tests.]])
## ------------------ ##
## Duplicate string. ##
## ------------------ ##
AT_SETUP([Duplicate string])
AT_DATA([duplicate.y],
[[/* `Bison -v' used to dump core when two tokens are defined with the same
string, as LE and GE below. */
%token NUM
%token LE "<="
%token GE "<="
%%
exp: '(' exp ')' | NUM ;
%%
]])
AT_CHECK([bison -v duplicate.y -o duplicate.c], 0, ignore, ignore)
AT_CLEANUP
## ------------------------- ##
## Unresolved SR Conflicts. ##
## ------------------------- ##
AT_SETUP([Unresolved SR Conflicts])
AT_DATA([input.y],
[[%token NUM OP
%%
exp: exp OP exp | NUM;
]])
AT_CHECK([bison input.y -o input.c -v], 0, [],
[input.y contains 1 shift/reduce conflict.
])
# Check the contents of the report.
AT_CHECK([cat input.output], [],
[[State 4 contains 1 shift/reduce conflict.
Grammar
Number, Line, Rule
1 3 exp -> exp OP exp
2 3 exp -> NUM
Terminals, with rules where they appear
$ (-1)
error (256)
NUM (257) 2
OP (258) 1
Nonterminals, with rules where they appear
exp (5)
on left: 1 2, on right: 1
state 0
NUM shift, and go to state 1
exp go to state 2
state 1
exp -> NUM . (rule 2)
$default reduce using rule 2 (exp)
state 2
exp -> exp . OP exp (rule 1)
$ go to state 5
OP shift, and go to state 3
state 3
exp -> exp OP . exp (rule 1)
NUM shift, and go to state 1
exp go to state 4
state 4
exp -> exp . OP exp (rule 1)
exp -> exp OP exp . (rule 1)
OP shift, and go to state 3
OP [reduce using rule 1 (exp)]
$default reduce using rule 1 (exp)
state 5
$ go to state 6
state 6
$default accept
]])
AT_CLEANUP
## --------------------- ##
## Solved SR Conflicts. ##
## --------------------- ##
AT_SETUP([Solved SR Conflicts])
AT_DATA([input.y],
[[%token NUM OP
%right OP
%%
exp: exp OP exp | NUM;
]])
AT_CHECK([bison input.y -o input.c -v], 0, [], [])
# Check the contents of the report.
AT_CHECK([cat input.output], [],
[[Conflict in state 4 between rule 1 and token OP resolved as shift.
Grammar
Number, Line, Rule
1 4 exp -> exp OP exp
2 4 exp -> NUM
Terminals, with rules where they appear
$ (-1)
error (256)
NUM (257) 2
OP (258) 1
Nonterminals, with rules where they appear
exp (5)
on left: 1 2, on right: 1
state 0
NUM shift, and go to state 1
exp go to state 2
state 1
exp -> NUM . (rule 2)
$default reduce using rule 2 (exp)
state 2
exp -> exp . OP exp (rule 1)
$ go to state 5
OP shift, and go to state 3
state 3
exp -> exp OP . exp (rule 1)
NUM shift, and go to state 1
exp go to state 4
state 4
exp -> exp . OP exp (rule 1)
exp -> exp OP exp . (rule 1)
OP shift, and go to state 3
$default reduce using rule 1 (exp)
state 5
$ go to state 6
state 6
$default accept
]])
AT_CLEANUP
## -------------------- ##
## %expect not enough. ##
## -------------------- ##
AT_SETUP([%expect not enough])
AT_DATA([input.y],
[[%token NUM OP
%expect 0
%%
exp: exp OP exp | NUM;
]])
AT_CHECK([bison input.y -o input.c], 1, [],
[input.y contains 1 shift/reduce conflict.
expected 0 shift/reduce conflicts
])
AT_CLEANUP
## --------------- ##
## %expect right. ##
## --------------- ##
AT_SETUP([%expect right])
AT_DATA([input.y],
[[%token NUM OP
%expect 1
%%
exp: exp OP exp | NUM;
]])
AT_CHECK([bison input.y -o input.c], 0, [],
[input.y contains 1 shift/reduce conflict.
])
AT_CLEANUP
## ------------------ ##
## %expect too much. ##
## ------------------ ##
AT_SETUP([%expect too much])
AT_DATA([input.y],
[[%token NUM OP
%expect 2
%%
exp: exp OP exp | NUM;
]])
AT_CHECK([bison input.y -o input.c], 1, [],
[input.y contains 1 shift/reduce conflict.
expected 2 shift/reduce conflicts
])
AT_CLEANUP
## ---------------------- ##
## Mixing %token styles. ##
## ---------------------- ##
AT_SETUP([Mixing %token styles])
# Taken from the documentation.
AT_DATA([input.y],
[[%token <operator> OR "||"
%token <operator> LE 134 "<="
%left OR "<="
%%
exp: ;
%%
]])
AT_CHECK([bison -v input.y -o input.c], 0, ignore, ignore)
AT_CLEANUP
## ---------------------- ##
## %union and --defines. ##
## ---------------------- ##
AT_SETUP([%union and --defines])
AT_DATA([union.y],
[%union
{
int integer;
char *string ;
}
%%
exp: {};
])
AT_CHECK([bison --defines union.y])
AT_CLEANUP
## --------------------------------------- ##
## Duplicate '/' in C comments in %union ##
## --------------------------------------- ##
AT_SETUP([%union and C comments])
AT_DATA([union-comment.y],
[%union
{
/* The int. */ int integer;
/* The string. */ char *string ;
}
%%
exp: {};
])
AT_CHECK([bison union-comment.y])
AT_CHECK([fgrep '//*' union-comment.tab.c], [1], [])
AT_CLEANUP
## ----------------- ##
## Invalid input 1. ##
## ----------------- ##
AT_SETUP([Invalid input: 1])
AT_DATA([input.y],
[[%%
?
]])
AT_CHECK([bison input.y], [1], [],
[input.y:2: invalid input: `?'
input.y:3: fatal error: no rules in the input grammar
])
AT_CLEANUP
## ----------------- ##
## Invalid input 2. ##
## ----------------- ##
AT_SETUP([Invalid input: 2])
AT_DATA([input.y],
[[%%
default: 'a' }
]])
AT_CHECK([bison input.y], [1], [],
[input.y:2: invalid input: `}'
])
AT_CLEANUP
## --------------------- ##
## Invalid CPP headers. ##
## --------------------- ##
# AT_TEST_CPP_GUARD_H([INPUT-FILE-BASE)
# -------------------------------------
m4_define([AT_TEST_CPP_GUARD_H],
[AT_SETUP([Invalid CPP guards: $1])
# Possibly create inner directories.
dirname=`AS_DIRNAME([$1])`
AS_MKDIR_P([$dirname])
AT_DATA([$1.y],
[%%
dummy:
])
AT_CHECK([bison --defines=$1.h $1.y])
# CPP should be happy with it.
AT_CHECK([$CC -E $1.h], 0, [ignore])
AT_CLEANUP
])
AT_TEST_CPP_GUARD_H([input/input])
AT_TEST_CPP_GUARD_H([9foo])