# Bison Regressions. -*- Autotest -*-
# Copyright (C) 2001, 2002 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.]])
## ------------------------- ##
## Early token definitions. ##
## ------------------------- ##
AT_SETUP([Early token definitions])
# Found in GCJ: they expect the tokens to be defined before the user
# prologue, so that they can use the token definitions in it.
AT_DATA([input.y],
[[%{
void yyerror (const char *s);
int yylex (void);
%}
%union
{
int val;
};
%{
#ifndef MY_TOKEN
# error "MY_TOKEN not defined."
#endif
%}
%token MY_TOKEN
%%
exp: MY_TOKEN;
%%
]])
AT_CHECK([bison -o input.c input.y])
AT_COMPILE([input.o], [-c input.c])
AT_CLEANUP
## ---------------- ##
## Braces parsing. ##
## ---------------- ##
AT_SETUP([Braces parsing])
AT_DATA([input.y],
[[/* Bison used to swallow the character after `}'. */
%%
exp: { tests = {{{{{{{{{{}}}}}}}}}}; };
%%
]])
AT_CHECK([bison -v -o input.c input.y])
AT_CHECK([grep 'tests = {{{{{{{{{{}}}}}}}}}};' input.c], 0, [ignore])
AT_CLEANUP
## ------------------ ##
## Duplicate string. ##
## ------------------ ##
AT_SETUP([Duplicate string])
AT_DATA([input.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 -o input.c input.y], 0, [],
[[input.y:6.8-14: warning: symbol `"<="' used more than once as a literal string
]])
AT_CLEANUP
## ------------------- ##
## Rule Line Numbers. ##
## ------------------- ##
AT_SETUP([Rule Line Numbers])
AT_KEYWORDS([report])
AT_DATA([input.y],
[[%%
expr:
'a'
{
}
'b'
{
}
|
{
}
'c'
{
};
]])
AT_CHECK([bison -o input.c -v input.y])
# Check the contents of the report.
AT_CHECK([cat input.output], [],
[[Grammar
0 $accept: expr $end
1 @1: /* empty */
2 expr: 'a' @1 'b'
3 @2: /* empty */
4 expr: @2 'c'
Terminals, with rules where they appear
$end (0) 0
'a' (97) 2
'b' (98) 2
'c' (99) 4
error (256)
Nonterminals, with rules where they appear
$accept (6)
on left: 0
expr (7)
on left: 2 4, on right: 0
@1 (8)
on left: 1, on right: 2
@2 (9)
on left: 3, on right: 4
state 0
0 $accept: . expr $end
'a' shift, and go to state 1
$default reduce using rule 3 (@2)
expr go to state 2
@2 go to state 3
state 1
2 expr: 'a' . @1 'b'
$default reduce using rule 1 (@1)
@1 go to state 4
state 2
0 $accept: expr . $end
$end shift, and go to state 5
state 3
4 expr: @2 . 'c'
'c' shift, and go to state 6
state 4
2 expr: 'a' @1 . 'b'
'b' shift, and go to state 7
state 5
0 $accept: expr $end .
$default accept
state 6
4 expr: @2 'c' .
$default reduce using rule 4 (expr)
state 7
2 expr: 'a' @1 'b' .
$default reduce using rule 2 (expr)
]])
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 -o input.c input.y])
AT_CLEANUP
## ---------------- ##
## Invalid inputs. ##
## ---------------- ##
AT_SETUP([Invalid inputs])
AT_DATA([input.y],
[[%%
?
default: 'a' }
%&
%a
%-
%{
]])
AT_CHECK([bison input.y], [1], [],
[[input.y:2.1: invalid character: `?'
input.y:3.14: invalid character: `}'
input.y:4.1: invalid character: `%'
input.y:4.2: invalid character: `&'
input.y:5.1: invalid character: `%'
input.y:6.1: invalid character: `%'
input.y:6.2: invalid character: `-'
input.y:7.1-8.0: unexpected end of file in a prologue
input.y:7.1-8.0: parse error, unexpected "%{...%}", expecting ";" or "|"
]])
AT_CLEANUP
## ------------------- ##
## Token definitions. ##
## ------------------- ##
AT_SETUP([Token definitions])
# Bison managed, when fed with `%token 'f' "f"' to #define 'f'!
AT_DATA([input.y],
[%{
void yyerror (const char *s);
int yylex (void);
%}
[%token YYEOF 0 "end of file"
%token 'a' "a"
%token b "b"
%token c 'c'
%token 'd' d
%%
exp: "a";
]])
AT_CHECK([bison -o input.c input.y])
AT_COMPILE([input.o], [-c input.c])
AT_CLEANUP
## -------------------- ##
## Characters Escapes. ##
## -------------------- ##
AT_SETUP([Characters Escapes])
AT_DATA([input.y],
[%{
void yyerror (const char *s);
int yylex (void);
%}
[%%
exp:
'\'' "\'"
| '\"' "\""
| '"' "'"
;
]])
AT_CHECK([bison -o input.c input.y])
AT_COMPILE([input.o], [-c input.c])
AT_CLEANUP
## -------------- ##
## Web2c Report. ##
## -------------- ##
# The generation of the reduction was once wrong in Bison, and made it
# miss some reductions. In the following test case, the reduction on
# `undef_id_tok' in state 1 was missing. This is stripped down from
# the actual web2c.y.
AT_SETUP([Web2c Report])
AT_KEYWORDS([report])
AT_DATA([input.y],
[[%token undef_id_tok const_id_tok
%start CONST_DEC_PART
%%
CONST_DEC_PART:
CONST_DEC_LIST
;
CONST_DEC_LIST:
CONST_DEC
| CONST_DEC_LIST CONST_DEC
;
CONST_DEC:
{ } undef_id_tok '=' const_id_tok ';'
;
%%
]])
AT_CHECK([bison -v input.y])
AT_CHECK([cat input.output], 0,
[[Grammar
0 $accept: CONST_DEC_PART $end
1 CONST_DEC_PART: CONST_DEC_LIST
2 CONST_DEC_LIST: CONST_DEC
3 | CONST_DEC_LIST CONST_DEC
4 @1: /* empty */
5 CONST_DEC: @1 undef_id_tok '=' const_id_tok ';'
Terminals, with rules where they appear
$end (0) 0
';' (59) 5
'=' (61) 5
error (256)
undef_id_tok (258) 5
const_id_tok (259) 5
Nonterminals, with rules where they appear
$accept (7)
on left: 0
CONST_DEC_PART (8)
on left: 1, on right: 0
CONST_DEC_LIST (9)
on left: 2 3, on right: 1 3
CONST_DEC (10)
on left: 5, on right: 2 3
@1 (11)
on left: 4, on right: 5
state 0
0 $accept: . CONST_DEC_PART $end
$default reduce using rule 4 (@1)
CONST_DEC_PART go to state 1
CONST_DEC_LIST go to state 2
CONST_DEC go to state 3
@1 go to state 4
state 1
0 $accept: CONST_DEC_PART . $end
$end shift, and go to state 5
state 2
1 CONST_DEC_PART: CONST_DEC_LIST .
3 CONST_DEC_LIST: CONST_DEC_LIST . CONST_DEC
undef_id_tok reduce using rule 4 (@1)
$default reduce using rule 1 (CONST_DEC_PART)
CONST_DEC go to state 6
@1 go to state 4
state 3
2 CONST_DEC_LIST: CONST_DEC .
$default reduce using rule 2 (CONST_DEC_LIST)
state 4
5 CONST_DEC: @1 . undef_id_tok '=' const_id_tok ';'
undef_id_tok shift, and go to state 7
state 5
0 $accept: CONST_DEC_PART $end .
$default accept
state 6
3 CONST_DEC_LIST: CONST_DEC_LIST CONST_DEC .
$default reduce using rule 3 (CONST_DEC_LIST)
state 7
5 CONST_DEC: @1 undef_id_tok . '=' const_id_tok ';'
'=' shift, and go to state 8
state 8
5 CONST_DEC: @1 undef_id_tok '=' . const_id_tok ';'
const_id_tok shift, and go to state 9
state 9
5 CONST_DEC: @1 undef_id_tok '=' const_id_tok . ';'
';' shift, and go to state 10
state 10
5 CONST_DEC: @1 undef_id_tok '=' const_id_tok ';' .
$default reduce using rule 5 (CONST_DEC)
]])
AT_CLEANUP
## --------------- ##
## Web2c Actions. ##
## --------------- ##
# The generation of the mapping `state -> action' was once wrong in
# extremely specific situations. web2c.y exhibits this situation.
# Below is a stripped version of the grammar. It looks like one can
# simplify it further, but just don't: it is tuned to exhibit a bug,
# which disapears when applying sane grammar transformations.
#
# It used to be wrong on yydefact only:
#
# static const short yydefact[] =
# {
# - 2, 0, 1, 0, 0, 2, 3, 2, 5, 4,
# + 2, 0, 1, 0, 0, 0, 3, 2, 5, 4,
# 0, 0
# };
#
# but let's check all the tables.
AT_SETUP([Web2c Actions])
AT_KEYWORDS([report])
AT_DATA([input.y],
[[%%
statement: struct_stat;
struct_stat: /* empty. */ | if else;
if: "if" "const" "then" statement;
else: "else" statement;
%%
]])
AT_CHECK([bison -v -o input.c input.y])
# Check only the tables. We don't use --no-parser, because it is
# still to be implemented in the experimental branch of Bison.
[sed -n 's/ *$//;/^static const.*\[\] =/,/^}/p' input.c >tables.c]
AT_CHECK([[cat tables.c]], 0,
[[static const unsigned char yytranslate[] =
{
0, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2, 2, 2, 1, 2, 3, 4,
5, 6
};
static const unsigned char yyprhs[] =
{
0, 0, 3, 5, 6, 9, 14
};
static const yysigned_char yyrhs[] =
{
8, 0, -1, 9, -1, -1, 10, 11, -1, 3,
4, 5, 8, -1, 6, 8, -1
};
static const unsigned char yyrline[] =
{
0, 2, 2, 3, 3, 4, 5
};
static const char *const yytname[] =
{
"$end", "error", "$undefined", "\"if\"", "\"const\"", "\"then\"",
"\"else\"", "$accept", "statement", "struct_stat", "if", "else", 0
};
static const unsigned short yytoknum[] =
{
0, 256, 257, 258, 259, 260, 261
};
static const unsigned char yyr1[] =
{
0, 7, 8, 9, 9, 10, 11
};
static const unsigned char yyr2[] =
{
0, 2, 1, 0, 2, 4, 2
};
static const unsigned char yydefact[] =
{
3, 0, 0, 2, 0, 0, 1, 3, 4, 3,
6, 5
};
static const yysigned_char yydefgoto[] =
{
-1, 2, 3, 4, 8
};
static const yysigned_char yypact[] =
{
-2, -1, 4, -8, 0, 2, -8, -2, -8, -2,
-8, -8
};
static const yysigned_char yypgoto[] =
{
-8, -7, -8, -8, -8
};
static const unsigned char yytable[] =
{
10, 1, 11, 5, 6, 0, 7, 9
};
static const yysigned_char yycheck[] =
{
7, 3, 9, 4, 0, -1, 6, 5
};
static const unsigned char yystos[] =
{
0, 3, 8, 9, 10, 4, 0, 6, 11, 5,
8, 8
};
]])
AT_CLEANUP