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cex: label all the derivations by their initial action

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    input.y: warning: reduce/reduce conflict on token $end [-Wcounterexamples]
      Example: A b .
      First derivation
        a
        `-> A b .
      Second derivation
        a
        `-> A b
              `-> b .

to

    input.y: warning: reduce/reduce conflict on token $end [-Wcounterexamples]
      Example: A b .
      First reduce derivation
        a
        `-> A b .
      Second reduce derivation
        a
        `-> A b
              `-> b .

* src/counterexample.c (print_counterexample): here.
Compute the width of the labels to properly align the values.
* tests/conflicts.at, tests/counterexample.at, tests/diagnostics.at,
* tests/report.at: Adjust.
This commit is contained in:
Akim Demaille
2020-07-20 07:14:50 +02:00
parent b81229e1f9
commit b8c5e5609f
5 changed files with 163 additions and 134 deletions
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228
tests/counterexample.at
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@@ -68,9 +68,9 @@ input.y:4.4: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token B [-Wcounterexamples]
Example A . B C
Shift derivation s -> [ y -> [ A . B ] c -> [ C ] ]
Reduce derivation s -> [ a -> [ A . ] x -> [ B C ] ]
Example A . B C
Shift derivation s -> [ y -> [ A . B ] c -> [ C ] ]
Reduce derivation s -> [ a -> [ A . ] x -> [ B C ] ]
input.y:4.4: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -125,13 +125,13 @@ input.y:6.4: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token B [-Wcounterexamples]
Example A . B C
Shift derivation s -> [ ac -> [ A ac -> [ b -> [ . B ] ] C ] ]
Reduce derivation s -> [ a -> [ A . ] bc -> [ B C ] ]
Example A . B C
Shift derivation s -> [ ac -> [ A ac -> [ b -> [ . B ] ] C ] ]
Reduce derivation s -> [ a -> [ A . ] bc -> [ B C ] ]
input.y: warning: shift/reduce conflict on token B [-Wcounterexamples]
Example A A . B B C C
Shift derivation s -> [ ac -> [ A ac -> [ A ac -> [ b -> [ . b -> [ B B ] ] ] C ] C ] ]
Reduce derivation s -> [ a -> [ A a -> [ A . ] ] bc -> [ B bc -> [ B C ] C ] ]
Example A A . B B C C
Shift derivation s -> [ ac -> [ A ac -> [ A ac -> [ b -> [ . b -> [ B B ] ] ] C ] C ] ]
Reduce derivation s -> [ a -> [ A a -> [ A . ] ] bc -> [ B bc -> [ B C ] C ] ]
input.y:6.4: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -187,14 +187,14 @@ input.y:5.4-9: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token B [-Wcounterexamples]
Example A . B
Shift derivation s -> [ A xby -> [ . B ] ]
Reduce derivation s -> [ ax -> [ A x -> [ . ] ] by -> [ B y -> [ ] ] ]
Example A . B
Shift derivation s -> [ A xby -> [ . B ] ]
Reduce derivation s -> [ ax -> [ A x -> [ . ] ] by -> [ B y -> [ ] ] ]
input.y: warning: shift/reduce conflict on token B [-Wcounterexamples]
First example A X . B Y $end
Shift derivation $accept -> [ s -> [ A xby -> [ X xby -> [ . B ] Y ] ] $end ]
Second example A X . B y $end
Reduce derivation $accept -> [ s -> [ ax -> [ A x -> [ X x -> [ . ] ] ] by -> [ B y ] ] $end ]
First example A X . B Y $end
Shift derivation $accept -> [ s -> [ A xby -> [ X xby -> [ . B ] Y ] ] $end ]
Second example A X . B y $end
Reduce derivation $accept -> [ s -> [ ax -> [ A x -> [ X x -> [ . ] ] ] by -> [ B y ] ] $end ]
input.y:5.4-9: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -238,10 +238,10 @@ input.y:6.4: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token C [-Wcounterexamples]
First example B . C $end
Shift derivation $accept -> [ g -> [ x -> [ bc -> [ B . C ] ] ] $end ]
Second example B . C D $end
Reduce derivation $accept -> [ g -> [ x -> [ b -> [ B . ] cd -> [ C D ] ] ] $end ]
First example B . C $end
Shift derivation $accept -> [ g -> [ x -> [ bc -> [ B . C ] ] ] $end ]
Second example B . C D $end
Reduce derivation $accept -> [ g -> [ x -> [ b -> [ B . ] cd -> [ C D ] ] ] $end ]
input.y:6.4: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -283,10 +283,10 @@ input.y: warning: shift/reduce conflict on token A [-Wcounterexamples]
]],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token A [-Wcounterexamples]
First example A . A B $end
Shift derivation $accept -> [ s -> [ t -> [ y -> [ A . A B ] ] ] $end ]
Second example A . A $end
Reduce derivation $accept -> [ s -> [ s -> [ t -> [ x -> [ A . ] ] ] t -> [ x -> [ A ] ] ] $end ]
First example A . A B $end
Shift derivation $accept -> [ s -> [ t -> [ y -> [ A . A B ] ] ] $end ]
Second example A . A $end
Reduce derivation $accept -> [ s -> [ s -> [ t -> [ x -> [ A . ] ] ] t -> [ x -> [ A ] ] ] $end ]
]])
AT_CLEANUP
@@ -342,14 +342,14 @@ input.y:8.4: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token A [-Wcounterexamples]
Example b . A X X Y
Shift derivation a -> [ s -> [ b . xx -> [ A X X ] y -> [ Y ] ] ]
Reduce derivation a -> [ r -> [ b . ] t -> [ A x -> [ X ] xy -> [ X Y ] ] ]
Example b . A X X Y
Shift derivation a -> [ s -> [ b . xx -> [ A X X ] y -> [ Y ] ] ]
Reduce derivation a -> [ r -> [ b . ] t -> [ A x -> [ X ] xy -> [ X Y ] ] ]
input.y: warning: shift/reduce conflict on token X [-Wcounterexamples]
First example A X . X
Shift derivation a -> [ t -> [ A xx -> [ X . X ] ] ]
Second example X . X xy
Reduce derivation a -> [ x -> [ X . ] t -> [ X xy ] ]
First example A X . X
Shift derivation a -> [ t -> [ A xx -> [ X . X ] ] ]
Second example X . X xy
Reduce derivation a -> [ x -> [ X . ] t -> [ X xy ] ]
input.y:4.4: warning: rule useless in parser due to conflicts [-Wother]
input.y:8.4: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -373,10 +373,10 @@ AT_BISON_CHECK_CEX(
[[input.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
input.y: warning: reduce/reduce conflict on token $end [-Wcounterexamples]
Example: A b .
First derivation
First reduce derivation
a
`-> A b .
Second derivation
Second reduce derivation
a
`-> A b
`-> b .
@@ -384,9 +384,9 @@ input.y:4.9: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
input.y: warning: reduce/reduce conflict on token $end [-Wcounterexamples]
Example A b .
First derivation a -> [ A b . ]
Second derivation a -> [ A b -> [ b . ] ]
Example A b .
First reduce derivation a -> [ A b . ]
Second reduce derivation a -> [ A b -> [ b . ] ]
input.y:4.9: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -410,13 +410,13 @@ AT_BISON_CHECK_CEX(
[[input.y: warning: 2 reduce/reduce conflicts [-Wconflicts-rr]
input.y: warning: reduce/reduce conflict on tokens A, C [-Wcounterexamples]
First example: D . A $end
First derivation
First reduce derivation
$accept
`-> s $end
`-> a A
`-> D .
Second example: B D . A $end
Second derivation
Second reduce derivation
$accept
`-> s $end
`-> B b A
@@ -425,10 +425,10 @@ input.y:5.4: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 2 reduce/reduce conflicts [-Wconflicts-rr]
input.y: warning: reduce/reduce conflict on tokens A, C [-Wcounterexamples]
First example D . A $end
First derivation $accept -> [ s -> [ a -> [ D . ] A ] $end ]
Second example B D . A $end
Second derivation $accept -> [ s -> [ B b -> [ D . ] A ] $end ]
First example D . A $end
First reduce derivation $accept -> [ s -> [ a -> [ D . ] A ] $end ]
Second example B D . A $end
Second reduce derivation $accept -> [ s -> [ B b -> [ D . ] A ] $end ]
input.y:5.4: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -469,10 +469,10 @@ input.y:4.4-6: warning: rule useless in parser due to conflicts [-Wother]
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token J [-Wcounterexamples]
time limit exceeded: XXX
First example H i . J K $end
Shift derivation $accept -> [ a -> [ H i -> [ i . J K ] ] $end ]
Second example H i . J $end
Reduce derivation $accept -> [ s -> [ a -> [ H i . ] J ] $end ]
First example H i . J K $end
Shift derivation $accept -> [ a -> [ H i -> [ i . J K ] ] $end ]
Second example H i . J $end
Reduce derivation $accept -> [ s -> [ a -> [ H i . ] J ] $end ]
input.y:4.4-6: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -528,13 +528,13 @@ input.y:5.4: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token B [-Wcounterexamples]
Example N A . B C
Shift derivation s -> [ n -> [ N b -> [ A . B C ] ] ]
Reduce derivation s -> [ n -> [ N a -> [ A . ] B ] C ]
Example N A . B C
Shift derivation s -> [ n -> [ N b -> [ A . B C ] ] ]
Reduce derivation s -> [ n -> [ N a -> [ A . ] B ] C ]
input.y: warning: shift/reduce conflict on token B [-Wcounterexamples]
Example N N A . B D C
Shift derivation s -> [ n -> [ N n -> [ N b -> [ A . B D ] ] C ] ]
Reduce derivation s -> [ n -> [ N n -> [ N a -> [ A . ] B ] D ] C ]
Example N N A . B D C
Shift derivation s -> [ n -> [ N n -> [ N b -> [ A . B D ] ] C ] ]
Reduce derivation s -> [ n -> [ N n -> [ N a -> [ A . ] B ] D ] C ]
input.y:5.4: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -563,12 +563,12 @@ AT_BISON_CHECK_CEX(
[[input.y: warning: 4 reduce/reduce conflicts [-Wconflicts-rr]
input.y: warning: reduce/reduce conflict on tokens b, c [-Wcounterexamples]
Example: B . b c
First derivation
First reduce derivation
S
`-> B C
`-> A b A `-> A c A
`-> B . `-> %empty `-> %empty `-> %empty
Second derivation
Second reduce derivation
S
`-> B C
`-> A c A
@@ -577,12 +577,12 @@ input.y: warning: reduce/reduce conflict on tokens b, c [-Wcounterexamples]
`-> . `-> %empty
input.y: warning: reduce/reduce conflict on tokens b, c [-Wcounterexamples]
Example: C . c b
First derivation
First reduce derivation
S
`-> C B
`-> A c A `-> A b A
`-> C . `-> %empty `-> %empty `-> %empty
Second derivation
Second reduce derivation
S
`-> C B
`-> A b A
@@ -592,13 +592,13 @@ input.y: warning: reduce/reduce conflict on tokens b, c [-Wcounterexamples]
]],
[[input.y: warning: 4 reduce/reduce conflicts [-Wconflicts-rr]
input.y: warning: reduce/reduce conflict on tokens b, c [-Wcounterexamples]
Example B . b c
First derivation S -> [ B -> [ A -> [ B . ] b A -> [ ] ] C -> [ A -> [ ] c A -> [ ] ] ]
Second derivation S -> [ B C -> [ A -> [ B -> [ A -> [ . ] b A -> [ ] ] ] c A -> [ ] ] ]
Example B . b c
First reduce derivation S -> [ B -> [ A -> [ B . ] b A -> [ ] ] C -> [ A -> [ ] c A -> [ ] ] ]
Second reduce derivation S -> [ B C -> [ A -> [ B -> [ A -> [ . ] b A -> [ ] ] ] c A -> [ ] ] ]
input.y: warning: reduce/reduce conflict on tokens b, c [-Wcounterexamples]
Example C . c b
First derivation S -> [ C -> [ A -> [ C . ] c A -> [ ] ] B -> [ A -> [ ] b A -> [ ] ] ]
Second derivation S -> [ C B -> [ A -> [ C -> [ A -> [ . ] c A -> [ ] ] ] b A -> [ ] ] ]
Example C . c b
First reduce derivation S -> [ C -> [ A -> [ C . ] c A -> [ ] ] B -> [ A -> [ ] b A -> [ ] ] ]
Second reduce derivation S -> [ C B -> [ A -> [ C -> [ A -> [ . ] c A -> [ ] ] ] b A -> [ ] ] ]
]])
AT_CLEANUP
@@ -623,13 +623,13 @@ AT_BISON_CHECK_CEX(
input.y: warning: 6 reduce/reduce conflicts [-Wconflicts-rr]
input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
First example: . c A A $end
First derivation
First reduce derivation
$accept
`-> a $end
`-> b d
`-> . `-> c A A
Second example: . c A A $end
Second derivation
Second reduce derivation
$accept
`-> a $end
`-> c d
@@ -637,7 +637,7 @@ input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
time limit exceeded: XXX
First example: b . c A A $end
First derivation
First reduce derivation
$accept
`-> a $end
`-> b d
@@ -645,7 +645,7 @@ time limit exceeded: XXX
`-> b d
`-> . `-> c A A
Second example: b . A $end
Second derivation
Second reduce derivation
$accept
`-> a $end
`-> b d
@@ -654,7 +654,7 @@ time limit exceeded: XXX
input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
time limit exceeded: XXX
First example: c . c A A $end
First derivation
First reduce derivation
$accept
`-> a $end
`-> c d
@@ -662,7 +662,7 @@ time limit exceeded: XXX
`-> b d
`-> . `-> c A A
Second example: c . A $end
Second derivation
Second reduce derivation
$accept
`-> a $end
`-> c d
@@ -687,7 +687,7 @@ time limit exceeded: XXX
`-> . `-> c A A
input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
First example: b c . c A A $end
First derivation
First reduce derivation
$accept
`-> a $end
`-> b d
@@ -697,7 +697,7 @@ input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
`-> b d
`-> . `-> c A A
Second example: b c . A $end
Second derivation
Second reduce derivation
$accept
`-> a $end
`-> b d
@@ -722,19 +722,19 @@ input.y: warning: shift/reduce conflict on token A [-Wcounterexamples]
`-> .
input.y: warning: reduce/reduce conflict on token $end [-Wcounterexamples]
Example: b d .
First derivation
First reduce derivation
a
`-> b d .
Second derivation
Second reduce derivation
a
`-> b d
`-> d .
input.y: warning: reduce/reduce conflict on token $end [-Wcounterexamples]
Example: c d .
First derivation
First reduce derivation
a
`-> c d .
Second derivation
Second reduce derivation
a
`-> c d
`-> d .
@@ -744,46 +744,46 @@ input.y:6.15: warning: rule useless in parser due to conflicts [-Wother]
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: 6 reduce/reduce conflicts [-Wconflicts-rr]
input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
First example . c A A $end
First derivation $accept -> [ a -> [ b -> [ . ] d -> [ c A A ] ] $end ]
Second example . c A A $end
Second derivation $accept -> [ a -> [ c -> [ . ] d -> [ c A A ] ] $end ]
First example . c A A $end
First reduce derivation $accept -> [ a -> [ b -> [ . ] d -> [ c A A ] ] $end ]
Second example . c A A $end
Second reduce derivation $accept -> [ a -> [ c -> [ . ] d -> [ c A A ] ] $end ]
input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
time limit exceeded: XXX
First example b . c A A $end
First derivation $accept -> [ a -> [ b d -> [ a -> [ b -> [ . ] d -> [ c A A ] ] ] ] $end ]
Second example b . A $end
Second derivation $accept -> [ a -> [ b d -> [ c -> [ . ] A ] ] $end ]
First example b . c A A $end
First reduce derivation $accept -> [ a -> [ b d -> [ a -> [ b -> [ . ] d -> [ c A A ] ] ] ] $end ]
Second example b . A $end
Second reduce derivation $accept -> [ a -> [ b d -> [ c -> [ . ] A ] ] $end ]
input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
time limit exceeded: XXX
First example c . c A A $end
First derivation $accept -> [ a -> [ c d -> [ a -> [ b -> [ . ] d -> [ c A A ] ] ] ] $end ]
Second example c . A $end
Second derivation $accept -> [ a -> [ c d -> [ c -> [ . ] A ] ] $end ]
First example c . c A A $end
First reduce derivation $accept -> [ a -> [ c d -> [ a -> [ b -> [ . ] d -> [ c A A ] ] ] ] $end ]
Second example c . A $end
Second reduce derivation $accept -> [ a -> [ c d -> [ c -> [ . ] A ] ] $end ]
input.y: warning: shift/reduce conflict on token A [-Wcounterexamples]
time limit exceeded: XXX
First example b c . A
Shift derivation a -> [ b d -> [ c . A ] ]
Second example b c . c A A $end
Reduce derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ a -> [ b -> [ . ] d -> [ c A A ] ] ] ] ] ] $end ]
First example b c . A
Shift derivation a -> [ b d -> [ c . A ] ]
Second example b c . c A A $end
Reduce derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ a -> [ b -> [ . ] d -> [ c A A ] ] ] ] ] ] $end ]
input.y: warning: reduce/reduce conflict on token A [-Wcounterexamples]
First example b c . c A A $end
First derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ a -> [ b -> [ . ] d -> [ c A A ] ] ] ] ] ] $end ]
Second example b c . A $end
Second derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ c -> [ . ] A ] ] ] ] $end ]
First example b c . c A A $end
First reduce derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ a -> [ b -> [ . ] d -> [ c A A ] ] ] ] ] ] $end ]
Second example b c . A $end
Second reduce derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ c -> [ . ] A ] ] ] ] $end ]
input.y: warning: shift/reduce conflict on token A [-Wcounterexamples]
First example b c . A
Shift derivation a -> [ b d -> [ c . A ] ]
Second example b c . A $end
Reduce derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ c -> [ . ] A ] ] ] ] $end ]
First example b c . A
Shift derivation a -> [ b d -> [ c . A ] ]
Second example b c . A $end
Reduce derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ c -> [ . ] A ] ] ] ] $end ]
input.y: warning: reduce/reduce conflict on token $end [-Wcounterexamples]
Example b d .
First derivation a -> [ b d . ]
Second derivation a -> [ b d -> [ d . ] ]
Example b d .
First reduce derivation a -> [ b d . ]
Second reduce derivation a -> [ b d -> [ d . ] ]
input.y: warning: reduce/reduce conflict on token $end [-Wcounterexamples]
Example c d .
First derivation a -> [ c d . ]
Second derivation a -> [ c d -> [ d . ] ]
Example c d .
First reduce derivation a -> [ c d . ]
Second reduce derivation a -> [ c d -> [ d . ] ]
input.y:5.4: warning: rule useless in parser due to conflicts [-Wother]
input.y:6.15: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -824,9 +824,9 @@ input.y:5.13-15: warning: rule useless in parser due to conflicts [-Wother]
]],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token J [-Wcounterexamples]
Example H i J . J J
Shift derivation s -> [ a -> [ H i J . J ] J ]
Reduce derivation s -> [ a -> [ H i -> [ i J . ] J J ] ]
Example H i J . J J
Shift derivation s -> [ a -> [ H i J . J ] J ]
Reduce derivation s -> [ a -> [ H i -> [ i J . ] J J ] ]
input.y:5.13-15: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -868,9 +868,9 @@ input.y: warning: shift/reduce conflict on token D [-Wcounterexamples]
]],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token D [-Wcounterexamples]
Example A a . D
Shift derivation s -> [ A a d -> [ . D ] ]
Reduce derivation s -> [ A a a -> [ b -> [ c -> [ . ] ] ] d -> [ D ] ]
Example A a . D
Shift derivation s -> [ A a d -> [ . D ] ]
Reduce derivation s -> [ A a a -> [ b -> [ c -> [ . ] ] ] d -> [ D ] ]
]])
AT_CLEANUP
@@ -913,10 +913,10 @@ input.y: warning: shift/reduce conflict on token D [-Wcounterexamples]
]],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
input.y: warning: shift/reduce conflict on token D [-Wcounterexamples]
First example A a . D $end
Shift derivation $accept -> [ s -> [ A a d -> [ . D ] ] $end ]
Second example A a . D E $end
Reduce derivation $accept -> [ s -> [ A a a -> [ b -> [ c -> [ . ] ] ] d -> [ D ] E ] $end ]
First example A a . D $end
Shift derivation $accept -> [ s -> [ A a d -> [ . D ] ] $end ]
Second example A a . D E $end
Reduce derivation $accept -> [ s -> [ A a a -> [ b -> [ c -> [ . ] ] ] d -> [ D ] E ] $end ]
]])
AT_CLEANUP