mirror of
https://git.savannah.gnu.org/git/bison.git
synced 2026-03-13 14:23:04 +00:00
cex: don't assume the terminal supports "•"
Use of print_unicode_char suggested by Bruno Haible. https://lists.gnu.org/r/bug-gettext/2020-06/msg00012.html * src/gram.h (print_dot_fallback, print_dot): New. * src/gram.c, src/derivation.c: Use it. * tests/counterexample.at, tests/report.at: Adjust the test suite. * .travis.yml, README-hacking.md: Adjust.
This commit is contained in:
Akim Demaille
@@ -46,10 +46,10 @@ y: A | A B;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token B:
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Example A • B C
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First derivation s ::=[ a ::=[ A • ] x ::=[ B C ] ]
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Example A • B C
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Second derivation s ::=[ y ::=[ A • B ] c ::=[ C ] ]
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Example A . B C
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First derivation s ::=[ a ::=[ A . ] x ::=[ B C ] ]
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Example A . B C
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Second derivation s ::=[ y ::=[ A . B ] c ::=[ C ] ]
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input.y:4.4: warning: rule useless in parser due to conflicts [-Wother]
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]])
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@@ -76,10 +76,10 @@ bc: B bc C | B C;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token B:
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Example A • B C
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First derivation s ::=[ a ::=[ A • ] bc ::=[ B C ] ]
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Example A • B C
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Second derivation s ::=[ ac ::=[ A ac ::=[ b ::=[ • B ] ] C ] ]
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Example A . B C
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First derivation s ::=[ a ::=[ A . ] bc ::=[ B C ] ]
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Example A . B C
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Second derivation s ::=[ ac ::=[ A ac ::=[ b ::=[ . B ] ] C ] ]
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input.y:6.4: warning: rule useless in parser due to conflicts [-Wother]
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]])
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@@ -107,16 +107,16 @@ xby: B | X xby Y;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
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Shift/reduce conflict on token B:
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Example A • B y
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First derivation s ::=[ ax ::=[ A x ::=[ • ] ] by ::=[ B y ] ]
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Example A • B
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Second derivation s ::=[ A xby ::=[ • B ] ]
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Example A . B y
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First derivation s ::=[ ax ::=[ A x ::=[ . ] ] by ::=[ B y ] ]
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Example A . B
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Second derivation s ::=[ A xby ::=[ . B ] ]
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Shift/reduce conflict on token B:
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First example A X • B y $end
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First derivation $accept ::=[ s ::=[ ax ::=[ A x ::=[ X x ::=[ • ] ] ] by ::=[ B y ] ] $end ]
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Second example A X • B Y $end
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Second derivation $accept ::=[ s ::=[ A xby ::=[ X xby ::=[ • B ] Y ] ] $end ]
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First example A X . B y $end
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First derivation $accept ::=[ s ::=[ ax ::=[ A x ::=[ X x ::=[ . ] ] ] by ::=[ B y ] ] $end ]
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Second example A X . B Y $end
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Second derivation $accept ::=[ s ::=[ A xby ::=[ X xby ::=[ . B ] Y ] ] $end ]
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input.y:5.4-9: warning: rule useless in parser due to conflicts [-Wother]
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]])
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@@ -144,10 +144,10 @@ bc: B C;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token C:
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First example B • C D $end
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First derivation $accept ::=[ g ::=[ x ::=[ b ::=[ B • ] cd ::=[ C D ] ] ] $end ]
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Second example B • C $end
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Second derivation $accept ::=[ g ::=[ x ::=[ bc ::=[ B • C ] ] ] $end ]
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First example B . C D $end
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First derivation $accept ::=[ g ::=[ x ::=[ b ::=[ B . ] cd ::=[ C D ] ] ] $end ]
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Second example B . C $end
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Second derivation $accept ::=[ g ::=[ x ::=[ bc ::=[ B . C ] ] ] $end ]
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input.y:6.4: warning: rule useless in parser due to conflicts [-Wother]
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]])
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@@ -173,10 +173,10 @@ y: A A B;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token A:
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First example A • A $end
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First derivation $accept ::=[ s ::=[ s ::=[ t ::=[ x ::=[ A • ] ] ] t ::=[ x ::=[ A ] ] ] $end ]
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Second example A • A B $end
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Second derivation $accept ::=[ s ::=[ t ::=[ y ::=[ A • A B ] ] ] $end ]
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First example A . A $end
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First derivation $accept ::=[ s ::=[ s ::=[ t ::=[ x ::=[ A . ] ] ] t ::=[ x ::=[ A ] ] ] $end ]
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Second example A . A B $end
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Second derivation $accept ::=[ s ::=[ t ::=[ y ::=[ A . A B ] ] ] $end ]
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]])
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@@ -206,16 +206,16 @@ y: Y;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
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Shift/reduce conflict on token A:
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Example b • A X X Y
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First derivation a ::=[ r ::=[ b • ] t ::=[ A x ::=[ X ] xy ::=[ X Y ] ] ]
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Example b • A X X Y
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Second derivation a ::=[ s ::=[ b • xx ::=[ A X X ] y ::=[ Y ] ] ]
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Example b . A X X Y
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First derivation a ::=[ r ::=[ b . ] t ::=[ A x ::=[ X ] xy ::=[ X Y ] ] ]
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Example b . A X X Y
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Second derivation a ::=[ s ::=[ b . xx ::=[ A X X ] y ::=[ Y ] ] ]
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Shift/reduce conflict on token X:
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First example X • X xy
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First derivation a ::=[ x ::=[ X • ] t ::=[ X xy ] ]
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Second example A X • X
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Second derivation a ::=[ t ::=[ A xx ::=[ X • X ] ] ]
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First example X . X xy
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First derivation a ::=[ x ::=[ X . ] t ::=[ X xy ] ]
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Second example A X . X
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Second derivation a ::=[ t ::=[ A xx ::=[ X . X ] ] ]
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input.y:4.4: warning: rule useless in parser due to conflicts [-Wother]
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input.y:8.4: warning: rule useless in parser due to conflicts [-Wother]
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@@ -240,21 +240,21 @@ b : A | b;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 reduce/reduce conflict [-Wconflicts-rr]
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Reduce/reduce conflict on token $end:
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Example A b •
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First derivation a ::=[ A b • ]
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Example A b •
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Second derivation a ::=[ A b ::=[ b • ] ]
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Example A b .
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First derivation a ::=[ A b . ]
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Example A b .
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Second derivation a ::=[ A b ::=[ b . ] ]
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input.y:4.9: warning: rule useless in parser due to conflicts [-Wother]
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]])
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AT_CLEANUP
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## ------------------------------- ##
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## Non-unifying R/R lr1 conflict. ##
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## ------------------------------- ##
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## --------------------------------- ##
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## Non-unifying R/R LR(1) conflict. ##
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## --------------------------------- ##
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AT_SETUP([Non-unifying R/R lr1 conflict])
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AT_SETUP([Non-unifying R/R LR(1) conflict])
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AT_KEYWORDS([cex])
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AT_DATA([[input.y]],
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@@ -268,21 +268,21 @@ b: D;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 2 reduce/reduce conflicts [-Wconflicts-rr]
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Reduce/reduce conflict on tokens A, C:
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First example D • A $end
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First derivation $accept ::=[ s ::=[ a ::=[ D • ] A ] $end ]
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Second example B D • A $end
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Second derivation $accept ::=[ s ::=[ B b ::=[ D • ] A ] $end ]
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First example D . A $end
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First derivation $accept ::=[ s ::=[ a ::=[ D . ] A ] $end ]
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Second example B D . A $end
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Second derivation $accept ::=[ s ::=[ B b ::=[ D . ] A ] $end ]
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input.y:5.4: warning: rule useless in parser due to conflicts [-Wother]
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]])
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AT_CLEANUP
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## ------------------------------- ##
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## Non-unifying R/R lr2 conflict. ##
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## ------------------------------- ##
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## --------------------------------- ##
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## Non-unifying R/R LR(2) conflict. ##
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## --------------------------------- ##
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AT_SETUP([Non-unifying R/R lr2 conflict])
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AT_SETUP([Non-unifying R/R LR(2) conflict])
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AT_KEYWORDS([cex])
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AT_DATA([[input.y]],
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@@ -297,10 +297,10 @@ AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token J:
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time limit exceeded: XXX
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First example H i • J $end
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First derivation $accept ::=[ s ::=[ a ::=[ H i • ] J ] $end ]
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Second example H i • J K $end
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Second derivation $accept ::=[ a ::=[ H i ::=[ i • J K ] ] $end ]
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First example H i . J $end
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First derivation $accept ::=[ s ::=[ a ::=[ H i . ] J ] $end ]
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Second example H i . J K $end
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Second derivation $accept ::=[ a ::=[ H i ::=[ i . J K ] ] $end ]
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input.y:4.4-6: warning: rule useless in parser due to conflicts [-Wother]
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]])
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@@ -329,10 +329,10 @@ b: A B C | A B D;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token B:
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Example N A • B C
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First derivation s ::=[ n ::=[ N a ::=[ A • ] B ] C ]
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Example N A • B C
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Second derivation s ::=[ n ::=[ N b ::=[ A • B C ] ] ]
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Example N A . B C
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First derivation s ::=[ n ::=[ N a ::=[ A . ] B ] C ]
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Example N A . B C
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Second derivation s ::=[ n ::=[ N b ::=[ A . B C ] ] ]
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input.y:5.4: warning: rule useless in parser due to conflicts [-Wother]
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]])
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@@ -362,16 +362,16 @@ C : A c A;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 4 reduce/reduce conflicts [-Wconflicts-rr]
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Reduce/reduce conflict on tokens b, c:
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Example B • b A A c A
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First derivation S ::=[ B ::=[ A ::=[ B • ] b A ] C ::=[ A c A ] ]
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Example B • b A c A
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Second derivation S ::=[ B C ::=[ A ::=[ B ::=[ A ::=[ • ] b A ] ] c A ] ]
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Example B . b A A c A
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First derivation S ::=[ B ::=[ A ::=[ B . ] b A ] C ::=[ A c A ] ]
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Example B . b A c A
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Second derivation S ::=[ B C ::=[ A ::=[ B ::=[ A ::=[ . ] b A ] ] c A ] ]
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Reduce/reduce conflict on tokens b, c:
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Example C • c A A b A
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First derivation S ::=[ C ::=[ A ::=[ C • ] c A ] B ::=[ A b A ] ]
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Example C • c A b A
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Second derivation S ::=[ C B ::=[ A ::=[ C ::=[ A ::=[ • ] c A ] ] b A ] ]
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Example C . c A A b A
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First derivation S ::=[ C ::=[ A ::=[ C . ] c A ] B ::=[ A b A ] ]
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Example C . c A b A
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Second derivation S ::=[ C B ::=[ A ::=[ C ::=[ A ::=[ . ] c A ] ] b A ] ]
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]])
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@@ -397,55 +397,55 @@ AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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input.y: warning: 6 reduce/reduce conflicts [-Wconflicts-rr]
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Reduce/reduce conflict on token A:
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First example • c A A $end
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First derivation $accept ::=[ a ::=[ b ::=[ • ] d ::=[ c A A ] ] $end ]
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Second example • c A A $end
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Second derivation $accept ::=[ a ::=[ c ::=[ • ] d ::=[ c A A ] ] $end ]
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First example . c A A $end
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First derivation $accept ::=[ a ::=[ b ::=[ . ] d ::=[ c A A ] ] $end ]
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Second example . c A A $end
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Second derivation $accept ::=[ a ::=[ c ::=[ . ] d ::=[ c A A ] ] $end ]
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Reduce/reduce conflict on token A:
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time limit exceeded: XXX
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First example b • c A A $end
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First derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ b ::=[ • ] d ::=[ c A A ] ] ] ] $end ]
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Second example b • A $end
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Second derivation $accept ::=[ a ::=[ b d ::=[ c ::=[ • ] A ] ] $end ]
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First example b . c A A $end
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First derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ b ::=[ . ] d ::=[ c A A ] ] ] ] $end ]
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Second example b . A $end
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Second derivation $accept ::=[ a ::=[ b d ::=[ c ::=[ . ] A ] ] $end ]
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Reduce/reduce conflict on token A:
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time limit exceeded: XXX
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First example c • c A A $end
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First derivation $accept ::=[ a ::=[ c d ::=[ a ::=[ b ::=[ • ] d ::=[ c A A ] ] ] ] $end ]
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Second example c • A $end
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Second derivation $accept ::=[ a ::=[ c d ::=[ c ::=[ • ] A ] ] $end ]
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First example c . c A A $end
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First derivation $accept ::=[ a ::=[ c d ::=[ a ::=[ b ::=[ . ] d ::=[ c A A ] ] ] ] $end ]
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Second example c . A $end
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Second derivation $accept ::=[ a ::=[ c d ::=[ c ::=[ . ] A ] ] $end ]
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Shift/reduce conflict on token A:
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time limit exceeded: XXX
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First example b c • c A A $end
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First derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ c d ::=[ a ::=[ b ::=[ • ] d ::=[ c A A ] ] ] ] ] ] $end ]
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Second example b c • A
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Second derivation a ::=[ b d ::=[ c • A ] ]
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First example b c . c A A $end
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First derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ c d ::=[ a ::=[ b ::=[ . ] d ::=[ c A A ] ] ] ] ] ] $end ]
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Second example b c . A
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Second derivation a ::=[ b d ::=[ c . A ] ]
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Reduce/reduce conflict on token A:
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First example b c • c A A $end
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First derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ c d ::=[ a ::=[ b ::=[ • ] d ::=[ c A A ] ] ] ] ] ] $end ]
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Second example b c • A $end
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Second derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ c d ::=[ c ::=[ • ] A ] ] ] ] $end ]
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First example b c . c A A $end
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First derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ c d ::=[ a ::=[ b ::=[ . ] d ::=[ c A A ] ] ] ] ] ] $end ]
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Second example b c . A $end
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Second derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ c d ::=[ c ::=[ . ] A ] ] ] ] $end ]
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Shift/reduce conflict on token A:
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First example b c • A $end
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First derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ c d ::=[ c ::=[ • ] A ] ] ] ] $end ]
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Second example b c • A
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Second derivation a ::=[ b d ::=[ c • A ] ]
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First example b c . A $end
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First derivation $accept ::=[ a ::=[ b d ::=[ a ::=[ c d ::=[ c ::=[ . ] A ] ] ] ] $end ]
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Second example b c . A
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Second derivation a ::=[ b d ::=[ c . A ] ]
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Reduce/reduce conflict on token $end:
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Example b d •
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First derivation a ::=[ b d • ]
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Example b d •
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Second derivation a ::=[ b d ::=[ d • ] ]
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Example b d .
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First derivation a ::=[ b d . ]
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Example b d .
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Second derivation a ::=[ b d ::=[ d . ] ]
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Reduce/reduce conflict on token $end:
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Example c d •
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First derivation a ::=[ c d • ]
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Example c d •
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Second derivation a ::=[ c d ::=[ d • ] ]
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Example c d .
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First derivation a ::=[ c d . ]
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Example c d .
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Second derivation a ::=[ c d ::=[ d . ] ]
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input.y:5.4: warning: rule useless in parser due to conflicts [-Wother]
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input.y:6.15: warning: rule useless in parser due to conflicts [-Wother]
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@@ -474,10 +474,10 @@ i: %empty | i J;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token J:
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Example H i J • J J
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First derivation s ::=[ a ::=[ H i ::=[ i J • ] J J ] ]
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Example H i J • J J
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Second derivation s ::=[ a ::=[ H i J • J ] J ]
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Example H i J . J J
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First derivation s ::=[ a ::=[ H i ::=[ i J . ] J J ] ]
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Example H i J . J J
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Second derivation s ::=[ a ::=[ H i J . J ] J ]
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input.y:5.13-15: warning: rule useless in parser due to conflicts [-Wother]
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]])
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@@ -507,10 +507,10 @@ d: D;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token D:
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Example A a • D
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First derivation s ::=[ A a a ::=[ b ::=[ c ::=[ • ] ] ] d ::=[ D ] ]
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Example A a • D
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Second derivation s ::=[ A a d ::=[ • D ] ]
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Example A a . D
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First derivation s ::=[ A a a ::=[ b ::=[ c ::=[ . ] ] ] d ::=[ D ] ]
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Example A a . D
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Second derivation s ::=[ A a d ::=[ . D ] ]
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]])
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@@ -538,10 +538,10 @@ d: D;
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AT_BISON_CHECK_CEX([input.y], [], [],
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[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
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Shift/reduce conflict on token D:
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First example A a • D E $end
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First derivation $accept ::=[ s ::=[ A a a ::=[ b ::=[ c ::=[ • ] ] ] d ::=[ D ] E ] $end ]
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Second example A a • D $end
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Second derivation $accept ::=[ s ::=[ A a d ::=[ • D ] ] $end ]
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First example A a . D E $end
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First derivation $accept ::=[ s ::=[ A a a ::=[ b ::=[ c ::=[ . ] ] ] d ::=[ D ] E ] $end ]
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Second example A a . D $end
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Second derivation $accept ::=[ s ::=[ A a d ::=[ . D ] ] $end ]
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]])
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