Future/bison
1
0
Fork 0
mirror of https://git.savannah.gnu.org/git/bison.git synced 2026-03-14 14:53:03 +00:00
Code Issues Packages Projects Releases Wiki Activity

cex: display shifts before reductions

Browse Source 
When reporting counterexamples for s/r conflicts, put the shift first.
This is more natural, and displays the default resolution first, which
is also what happens for r/r conflicts where the smallest rule number
is displayed first, and "wins".

* src/counterexample.c (counterexample): Add a shift_reduce member.
(new_counterexample): Adjust.
Swap the derivations when this is a s/r conflict.
(print_counterexample): For s/r conflicts, prefer "Shift derivation"
and "Reduce derivation" rather than "First/Second derivation".

* tests/conflicts.at, tests/counterexample.at, tests/report.at: Adjust.
* NEWS, doc/bison.texi: Ditto.
This commit is contained in:
Akim Demaille
2020-07-12 18:53:30 +02:00
parent 78f72a4516
commit 4f9ae5de07
7 changed files with 146 additions and 128 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
tests/conflicts.at
View File

@@ -865,8 +865,8 @@ State 5
1 exp: exp OP exp .
1 exp: exp . OP exp
Example exp OP exp . OP exp
First derivation exp -> [ exp -> [ exp OP exp . ] OP exp ]
Second derivation exp -> [ exp OP exp -> [ exp . OP exp ] ]
Shift derivation exp -> [ exp OP exp -> [ exp . OP exp ] ]
Reduce derivation exp -> [ exp -> [ exp OP exp . ] OP exp ]
]])
@@ -1753,18 +1753,18 @@ State 4
Shift/reduce conflict on token 'a':
10 reported_conflicts: . %empty
8 reported_conflicts: . 'a'
First example resolved_conflict . 'a'
First derivation start -> [ resolved_conflict reported_conflicts -> [ . ] 'a' ]
Second example resolved_conflict . 'a' 'a'
Second derivation start -> [ resolved_conflict reported_conflicts -> [ . 'a' ] 'a' ]
First example resolved_conflict . 'a' 'a'
Shift derivation start -> [ resolved_conflict reported_conflicts -> [ . 'a' ] 'a' ]
Second example resolved_conflict . 'a'
Reduce derivation start -> [ resolved_conflict reported_conflicts -> [ . ] 'a' ]
Shift/reduce conflict on token 'a':
10 reported_conflicts: . %empty
9 reported_conflicts: . 'a'
First example resolved_conflict . 'a'
First derivation start -> [ resolved_conflict reported_conflicts -> [ . ] 'a' ]
Second example resolved_conflict . 'a' 'a'
Second derivation start -> [ resolved_conflict reported_conflicts -> [ . 'a' ] 'a' ]
First example resolved_conflict . 'a' 'a'
Shift derivation start -> [ resolved_conflict reported_conflicts -> [ . 'a' ] 'a' ]
Second example resolved_conflict . 'a'
Reduce derivation start -> [ resolved_conflict reported_conflicts -> [ . ] 'a' ]

100
tests/counterexample.at
View File

@@ -47,8 +47,8 @@ AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token B:
Example A . B C
First derivation s -> [ a -> [ A . ] x -> [ B C ] ]
Second derivation s -> [ y -> [ A . B ] c -> [ 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]
]])
@@ -76,13 +76,13 @@ AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token B:
Example A . B C
First derivation s -> [ a -> [ A . ] bc -> [ B C ] ]
Second derivation s -> [ ac -> [ A ac -> [ b -> [ . B ] ] C ] ]
Shift derivation s -> [ ac -> [ A ac -> [ b -> [ . B ] ] C ] ]
Reduce derivation s -> [ a -> [ A . ] bc -> [ B C ] ]
Shift/reduce conflict on token B:
Example A A . B B C C
First derivation s -> [ a -> [ A a -> [ A . ] ] bc -> [ B bc -> [ B C ] C ] ]
Second derivation s -> [ ac -> [ A ac -> [ A ac -> [ b -> [ . b -> [ 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]
]])
@@ -111,14 +111,14 @@ AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
Shift/reduce conflict on token B:
Example A . B
First derivation s -> [ ax -> [ A x -> [ . ] ] by -> [ B y -> [ ] ] ]
Second derivation s -> [ A xby -> [ . B ] ]
Shift derivation s -> [ A xby -> [ . B ] ]
Reduce derivation s -> [ ax -> [ A x -> [ . ] ] by -> [ B y -> [ ] ] ]
Shift/reduce conflict on token B:
First example A X . B y $end
First derivation $accept -> [ s -> [ ax -> [ A x -> [ X x -> [ . ] ] ] by -> [ B y ] ] $end ]
Second example A X . B Y $end
Second derivation $accept -> [ s -> [ A xby -> [ X xby -> [ . 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]
]])
@@ -146,10 +146,10 @@ bc: B C;
AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token C:
First example B . C D $end
First derivation $accept -> [ g -> [ x -> [ b -> [ B . ] cd -> [ C D ] ] ] $end ]
Second example B . C $end
Second derivation $accept -> [ g -> [ x -> [ bc -> [ B . C ] ] ] $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]
]])
@@ -175,10 +175,10 @@ y: A A B;
AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token A:
First example A . A $end
First derivation $accept -> [ s -> [ s -> [ t -> [ x -> [ A . ] ] ] t -> [ x -> [ A ] ] ] $end ]
Second example A . A B $end
Second derivation $accept -> [ s -> [ t -> [ y -> [ A . A B ] ] ] $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 ]
]])
@@ -209,14 +209,14 @@ AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr]
Shift/reduce conflict on token A:
Example b . A X X Y
First derivation a -> [ r -> [ b . ] t -> [ A x -> [ X ] xy -> [ X Y ] ] ]
Second derivation a -> [ s -> [ b . xx -> [ A X X ] y -> [ Y ] ] ]
Shift derivation a -> [ s -> [ b . xx -> [ A X X ] y -> [ Y ] ] ]
Reduce derivation a -> [ r -> [ b . ] t -> [ A x -> [ X ] xy -> [ X Y ] ] ]
Shift/reduce conflict on token X:
First example X . X xy
First derivation a -> [ x -> [ X . ] t -> [ X xy ] ]
Second example A X . X
Second derivation a -> [ t -> [ A xx -> [ X . X ] ] ]
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]
@@ -297,10 +297,10 @@ AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token J:
time limit exceeded: XXX
First example H i . J $end
First derivation $accept -> [ s -> [ a -> [ H i . ] J ] $end ]
Second example H i . J K $end
Second derivation $accept -> [ a -> [ H i -> [ i . J K ] ] $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]
]])
@@ -330,13 +330,13 @@ AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token B:
Example N A . B C
First derivation s -> [ n -> [ N a -> [ A . ] B ] C ]
Second derivation s -> [ n -> [ N b -> [ A . B C ] ] ]
Shift derivation s -> [ n -> [ N b -> [ A . B C ] ] ]
Reduce derivation s -> [ n -> [ N a -> [ A . ] B ] C ]
Shift/reduce conflict on token B:
Example N N A . B D C
First derivation s -> [ n -> [ N n -> [ N a -> [ A . ] B ] D ] C ]
Second derivation s -> [ n -> [ N n -> [ N b -> [ 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]
]])
@@ -420,10 +420,10 @@ time limit exceeded: XXX
Shift/reduce conflict on token A:
time limit exceeded: XXX
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
Second derivation a -> [ b d -> [ c . A ] ]
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 ]
Reduce/reduce conflict on token A:
First example b c . c A A $end
@@ -432,10 +432,10 @@ Reduce/reduce conflict on token A:
Second derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ c -> [ . ] A ] ] ] ] $end ]
Shift/reduce conflict on token A:
First example b c . A $end
First derivation $accept -> [ a -> [ b d -> [ a -> [ c d -> [ c -> [ . ] A ] ] ] ] $end ]
Second example b c . A
Second derivation a -> [ b d -> [ c . A ] ]
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 ]
Reduce/reduce conflict on token $end:
Example b d .
@@ -475,8 +475,8 @@ AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token J:
Example H i J . J J
First derivation s -> [ a -> [ H i -> [ i J . ] J J ] ]
Second derivation s -> [ a -> [ 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]
]])
@@ -507,8 +507,8 @@ AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token D:
Example A a . D
First derivation s -> [ A a a -> [ b -> [ c -> [ . ] ] ] d -> [ D ] ]
Second derivation s -> [ A a d -> [ . D ] ]
Shift derivation s -> [ A a d -> [ . D ] ]
Reduce derivation s -> [ A a a -> [ b -> [ c -> [ . ] ] ] d -> [ D ] ]
]])
@@ -536,10 +536,10 @@ d: D;
AT_BISON_CHECK_CEX([input.y], [], [],
[[input.y: warning: 1 shift/reduce conflict [-Wconflicts-sr]
Shift/reduce conflict on token D:
First example A a . D E $end
First derivation $accept -> [ s -> [ A a a -> [ b -> [ c -> [ . ] ] ] d -> [ D ] E ] $end ]
Second example A a . D $end
Second derivation $accept -> [ s -> [ A a d -> [ . D ] ] $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 ]
]])

24
tests/diagnostics.at
View File

@@ -534,28 +534,28 @@ exp
| "num"
]],
[1],
[[input.y: <error>error:</error> shift/reduce conflicts: 4 found, 0 expected
Shift/reduce conflict on token "+":
[[input.y: <error>error:</error> shift/reduce conflicts: 4 found, 0 expected
First derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
Shift/reduce conflict on token "+":
Example <cex-0><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf><cex-1> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-1></cex-0>
Shift derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-1><cex-step> ]</cex-step></cex-0>
Example <cex-0><cex-1><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-0>
Reduce derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
Shift/reduce conflict on token "else":
First derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
Shift/reduce conflict on token "else":
Example <cex-0><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-1></cex-0>
Shift derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-1><cex-step> ]</cex-step></cex-0>
Example <cex-0><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot></cex-1> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-0>
Reduce derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
Shift/reduce conflict on token "+":
First derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
Shift/reduce conflict on token "+":
Example <cex-0><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-1></cex-0>
Shift derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-1><cex-step> ]</cex-step></cex-0>
Example <cex-0><cex-1><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-0>
Reduce derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
Shift/reduce conflict on token "+":
First derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>
Shift/reduce conflict on token "+":
Example <cex-0><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf><cex-1> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-1></cex-0>
Shift derivation <cex-0><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf><cex-1> <cex-step>exp → [ </cex-step><cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-1><cex-step> ]</cex-step></cex-0>
Example <cex-0><cex-1><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf></cex-0>
Reduce derivation <cex-0><cex-step>exp → [ </cex-step><cex-1><cex-step>exp → [ </cex-step><cex-leaf>"if"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"then"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-leaf>"else"</cex-leaf> <cex-leaf>exp</cex-leaf> <cex-dot>•</cex-dot><cex-step> ]</cex-step></cex-1> <cex-leaf>"+"</cex-leaf> <cex-leaf>exp</cex-leaf><cex-step> ]</cex-step></cex-0>

40
tests/report.at
View File

@@ -1539,8 +1539,8 @@ AT_CHECK([LC_ALL="$locale" bison -fno-caret -o input.cc -rall -Wcex --graph=inpu
input.y: warning: 3 reduce/reduce conflicts [-Wconflicts-rr]
Shift/reduce conflict on token "⊕":
Example exp "+" exp • "⊕" exp
First derivation exp → [ exp → [ exp "+" exp • ] "⊕" exp ]
Second derivation exp → [ exp "+" exp → [ exp • "⊕" exp ] ]
Shift derivation exp → [ exp "+" exp → [ exp • "⊕" exp ] ]
Reduce derivation exp → [ exp → [ exp "+" exp • ] "⊕" exp ]
Reduce/reduce conflict on tokens $end, "+", "⊕":
Example exp "+" exp •
@@ -1549,23 +1549,23 @@ Reduce/reduce conflict on tokens $end, "+", "⊕":
Shift/reduce conflict on token "⊕":
Example exp "+" exp • "⊕" exp
First derivation exp → [ exp → [ exp "+" exp • ] "⊕" exp ]
Second derivation exp → [ exp "+" exp → [ exp • "⊕" exp ] ]
Shift derivation exp → [ exp "+" exp → [ exp • "⊕" exp ] ]
Reduce derivation exp → [ exp → [ exp "+" exp • ] "⊕" exp ]
Shift/reduce conflict on token "⊕":
Example exp "⊕" exp • "⊕" exp
First derivation exp → [ exp → [ exp "⊕" exp • ] "⊕" exp ]
Second derivation exp → [ exp "⊕" exp → [ exp • "⊕" exp ] ]
Shift derivation exp → [ exp "⊕" exp → [ exp • "⊕" exp ] ]
Reduce derivation exp → [ exp → [ exp "⊕" exp • ] "⊕" exp ]
Shift/reduce conflict on token "+":
Example exp "⊕" exp • "+" exp
First derivation exp → [ exp → [ exp "⊕" exp • ] "+" exp ]
Second derivation exp → [ exp "⊕" exp → [ exp • "+" exp ] ]
Shift derivation exp → [ exp "⊕" exp → [ exp • "+" exp ] ]
Reduce derivation exp → [ exp → [ exp "⊕" exp • ] "+" exp ]
Shift/reduce conflict on token "+":
Example exp "⊕" exp • "+" exp
First derivation exp → [ exp → [ exp "⊕" exp • ] "+" exp ]
Second derivation exp → [ exp "⊕" exp → [ exp • "+" exp ] ]
Shift derivation exp → [ exp "⊕" exp → [ exp • "+" exp ] ]
Reduce derivation exp → [ exp → [ exp "⊕" exp • ] "+" exp ]
input.y:6.3-13: warning: rule useless in parser due to conflicts [-Wother]
]])
@@ -1714,8 +1714,8 @@ State 7
2 exp: exp "+" exp •
1 exp: exp • "⊕" exp
Example exp "+" exp • "⊕" exp
First derivation exp → [ exp → [ exp "+" exp • ] "⊕" exp ]
Second derivation exp → [ exp "+" exp → [ exp • "⊕" exp ] ]
Shift derivation exp → [ exp "+" exp → [ exp • "⊕" exp ] ]
Reduce derivation exp → [ exp → [ exp "+" exp • ] "⊕" exp ]
Reduce/reduce conflict on tokens $end, "+", "⊕":
2 exp: exp "+" exp •
@@ -1728,8 +1728,8 @@ State 7
3 exp: exp "+" exp •
1 exp: exp • "⊕" exp
Example exp "+" exp • "⊕" exp
First derivation exp → [ exp → [ exp "+" exp • ] "⊕" exp ]
Second derivation exp → [ exp "+" exp → [ exp • "⊕" exp ] ]
Shift derivation exp → [ exp "+" exp → [ exp • "⊕" exp ] ]
Reduce derivation exp → [ exp → [ exp "+" exp • ] "⊕" exp ]
@@ -1751,22 +1751,22 @@ State 8
1 exp: exp "⊕" exp •
1 exp: exp • "⊕" exp
Example exp "⊕" exp • "⊕" exp
First derivation exp → [ exp → [ exp "⊕" exp • ] "⊕" exp ]
Second derivation exp → [ exp "⊕" exp → [ exp • "⊕" exp ] ]
Shift derivation exp → [ exp "⊕" exp → [ exp • "⊕" exp ] ]
Reduce derivation exp → [ exp → [ exp "⊕" exp • ] "⊕" exp ]
Shift/reduce conflict on token "+":
1 exp: exp "⊕" exp •
2 exp: exp • "+" exp
Example exp "⊕" exp • "+" exp
First derivation exp → [ exp → [ exp "⊕" exp • ] "+" exp ]
Second derivation exp → [ exp "⊕" exp → [ exp • "+" exp ] ]
Shift derivation exp → [ exp "⊕" exp → [ exp • "+" exp ] ]
Reduce derivation exp → [ exp → [ exp "⊕" exp • ] "+" exp ]
Shift/reduce conflict on token "+":
1 exp: exp "⊕" exp •
3 exp: exp • "+" exp
Example exp "⊕" exp • "+" exp
First derivation exp → [ exp → [ exp "⊕" exp • ] "+" exp ]
Second derivation exp → [ exp "⊕" exp → [ exp • "+" exp ] ]
Shift derivation exp → [ exp "⊕" exp → [ exp • "+" exp ] ]
Reduce derivation exp → [ exp → [ exp "⊕" exp • ] "+" exp ]
]])