# Exercising Bison on conflicts. -*- Autotest -*-
-# Copyright (C) 2002-2005, 2007-2012 Free Software Foundation, Inc.
+# Copyright (C) 2002-2005, 2007-2013 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
AT_BANNER([[Conflicts.]])
+## ------------------------ ##
+## Token declaration order. ##
+## ------------------------ ##
+
+# This test checks that token are declared left to right when in a precedence
+# statement.
+
+AT_SETUP([Token declaration order])
+
+AT_BISON_OPTION_PUSHDEFS
+
+AT_DATA_GRAMMAR([[input.y]],
+[[%code {
+ #include <stdio.h>
+ ]AT_YYERROR_DECLARE[
+ ]AT_YYLEX_DECLARE[
+}
+%token A B C
+%token D
+%right E F G
+%right H I
+%right J
+%left K
+%left L M N
+%nonassoc O P Q
+%precedence R S T U
+%precedence V W
+%%
+exp: A
+%%
+]AT_YYERROR_DEFINE[
+]AT_YYLEX_DEFINE[
+int main (void)
+{
+ assert (A < B);
+ assert (B < C);
+ assert (C < D);
+ assert (D < E);
+ assert (E < F);
+ assert (F < G);
+ assert (G < H);
+ assert (H < I);
+ assert (I < J);
+ assert (J < K);
+ assert (K < L);
+ assert (L < M);
+ assert (M < N);
+ assert (N < O);
+ assert (O < P);
+ assert (P < Q);
+ assert (Q < R);
+ assert (R < S);
+ assert (S < T);
+ assert (T < U);
+ assert (U < V);
+ assert (V < W);
+ return 0;
+}
+]])
+
+AT_FULL_COMPILE([input])
+
+AT_CHECK([./input])
+
+AT_BISON_OPTION_POPDEFS
+
+AT_CLEANUP
+
+
## ---------------- ##
## S/R in initial. ##
## ---------------- ##
[[input.y:4.9: warning: rule useless in parser due to conflicts: e: /* empty */ [-Wother]
]])
+AT_BISON_CHECK([-fcaret -o input.c input.y], 0, [],
+[[input.y:4.9: warning: rule useless in parser due to conflicts [-Wother]
+ e: 'e' | /* Nothing. */;
+ ^
+]])
+
AT_CLEANUP
# We must disable default reductions in inconsistent states in order to
# have an explicit list of all expected tokens.
-AT_NONASSOC_AND_EOF_CHECK([[-Dlr.default-reductions=consistent]],
+AT_NONASSOC_AND_EOF_CHECK([[-Dlr.default-reduction=consistent]],
[[correct]])
-# lr.default-reductions=consistent happens to work for this test case.
+# lr.default-reduction=consistent happens to work for this test case.
# However, for other grammars, lookahead sets can be merged for
# different left contexts, so it is still possible to have an incorrect
# expected list. Canonical LR is almost a general solution (that is, it
/*-------.
| main. |
-`-------*/]AT_SKEL_JAVA_IF([[
-
-class input
-{
- public static void main (String args[]) throws IOException
- {
- YYParser p = new YYParser ();
- p.parse ();
- }
-}]], [AT_SKEL_CC_IF([[
-
-int
-main (void)
-{
- yy::parser parser;
- return parser.parse ();
-}]], [[
-
-int
-main (void)
-{
- return yyparse ();
-}]])])[
-]])
+`-------*/
+]AT_MAIN_DEFINE
+])
AT_FULL_COMPILE([[input]])
# Even canonical LR doesn't foresee the error for 'a'!
AT_CONSISTENT_ERRORS_CHECK([[%define lr.type ielr
- %define lr.default-reductions consistent]],
+ %define lr.default-reduction consistent]],
[AT_PREVIOUS_STATE_GRAMMAR],
[AT_PREVIOUS_STATE_INPUT],
[[$end]], [[ab]])
AT_CONSISTENT_ERRORS_CHECK([[%define lr.type ielr
- %define lr.default-reductions accepting]],
+ %define lr.default-reduction accepting]],
[AT_PREVIOUS_STATE_GRAMMAR],
[AT_PREVIOUS_STATE_INPUT],
[[$end]], [[ab]])
[['b']], [[none]])
# No C++ or Java test because yychar cannot be manipulated by users.
-AT_CONSISTENT_ERRORS_CHECK([[%define lr.default-reductions consistent]],
+AT_CONSISTENT_ERRORS_CHECK([[%define lr.default-reduction consistent]],
[AT_USER_ACTION_GRAMMAR],
[AT_USER_ACTION_INPUT],
[['b']], [[none]])
# Canonical LR doesn't foresee the error for 'a'!
-AT_CONSISTENT_ERRORS_CHECK([[%define lr.default-reductions accepting]],
+AT_CONSISTENT_ERRORS_CHECK([[%define lr.default-reduction accepting]],
[AT_USER_ACTION_GRAMMAR],
[AT_USER_ACTION_INPUT],
[[$end]], [[a]])
[AT_USER_ACTION_INPUT],
[['b']], [[none]])
AT_CONSISTENT_ERRORS_CHECK([[%define parse.lac full
- %define lr.default-reductions accepting]],
+ %define lr.default-reduction accepting]],
[AT_USER_ACTION_GRAMMAR],
[AT_USER_ACTION_INPUT],
[[$end]], [[none]])
%%
]AT_YYERROR_DEFINE[
]AT_YYLEX_DEFINE(["aaa"])[
-
-int
-main (void)
-{
- return yyparse ();
-}
-]])
+]AT_MAIN_DEFINE
+])
AT_BISON_OPTION_POPDEFS
# Show canonical LR's failure.
on left: 1 2, on right: 0 1
-state 0
+State 0
0 $accept: . exp $end
1 exp: . exp OP exp
exp go to state 2
-state 1
+State 1
2 exp: NUM .
$default reduce using rule 2 (exp)
-state 2
+State 2
0 $accept: exp . $end
1 exp: exp . OP exp
OP shift, and go to state 4
-state 3
+State 3
0 $accept: exp $end .
$default accept
-state 4
+State 4
1 exp: . exp OP exp
1 | exp OP . exp
exp go to state 5
-state 5
+State 5
1 exp: exp . OP exp
1 | exp OP exp . [$end, OP]
on left: 1 2, on right: 0 1
-state 0
+State 0
0 $accept: . exp $end
1 exp: . exp OP exp
exp go to state 2
-state 1
+State 1
2 exp: NUM .
$default reduce using rule 2 (exp)
-state 2
+State 2
0 $accept: exp . $end
1 exp: exp . OP exp
OP shift, and go to state 4
-state 3
+State 3
0 $accept: exp $end .
$default accept
-state 4
+State 4
1 exp: . exp OP exp
1 | exp OP . exp
exp go to state 5
-state 5
+State 5
1 exp: exp . OP exp
1 | exp OP exp . [$end, OP]
on left: 4, on right: 2
-state 0
+State 0
0 $accept: . exp $end
1 exp: . num
id go to state 4
-state 1
+State 1
3 num: '0' . [$end]
4 id: '0' . [$end]
$default reduce using rule 3 (num)
-state 2
+State 2
0 $accept: exp . $end
$end shift, and go to state 5
-state 3
+State 3
1 exp: num .
$default reduce using rule 1 (exp)
-state 4
+State 4
2 exp: id .
$default reduce using rule 2 (exp)
-state 5
+State 5
0 $accept: exp $end .
on left: 8 9 10, on right: 1
-state 0
+State 0
0 $accept: . start $end
1 start: . resolved_conflict 'a' reported_conflicts 'a'
Conflict between rule 3 and token 'a' resolved as reduce (%left 'a').
-state 1
+State 1
0 $accept: start . $end
$end shift, and go to state 3
-state 2
+State 2
1 start: resolved_conflict . 'a' reported_conflicts 'a'
'a' shift, and go to state 4
-state 3
+State 3
0 $accept: start $end .
$default accept
-state 4
+State 4
1 start: resolved_conflict 'a' . reported_conflicts 'a'
8 reported_conflicts: . 'a'
reported_conflicts go to state 6
-state 5
+State 5
8 reported_conflicts: 'a' . ['a']
9 | 'a' . ['a']
$default reduce using rule 8 (reported_conflicts)
-state 6
+State 6
1 start: resolved_conflict 'a' reported_conflicts . 'a'
'a' shift, and go to state 7
-state 7
+State 7
1 start: resolved_conflict 'a' reported_conflicts 'a' .
]])
AT_DATA([[input-keep.y]],
-[[%define lr.keep-unreachable-states
+[[%define lr.keep-unreachable-state
]])
AT_CHECK([[cat input.y >> input-keep.y]])
empty_c3: %prec 'd' ;
]])
AT_BISON_CHECK([[--report=all -o input.c input.y]], 0, [], [ignore])
-AT_CHECK([[cat input.output | sed -n '/^state 0$/,/^state 1$/p']], 0,
-[[state 0
+AT_CHECK([[cat input.output | sed -n '/^State 0$/,/^State 1$/p']], 0,
+[[State 0
0 $accept: . start $end
1 start: . 'a'
Conflict between rule 13 and token 'c' resolved as reduce ('c' < 'd').
-state 1
+State 1
]])
AT_CLEANUP
]])
AT_BISON_CHECK([[--report=all -o input.c input.y]], 0, [], [ignore])
-AT_CHECK([[cat input.output | sed -n '/^state 0$/,/^state 1$/p']], 0,
-[[state 0
+AT_CHECK([[cat input.output | sed -n '/^State 0$/,/^State 1$/p']], 0,
+[[State 0
0 $accept: . start $end
1 start: . 'a'
Conflict between rule 11 and token 'c' resolved as an error (%nonassoc 'c').
-state 1
+State 1
]])
AT_CLEANUP
projects / bison.git / blobdiff