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SimplifiedCplusplusAmbiguity.output
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SimplifiedCplusplusAmbiguity.output
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Warnings:
---------
1 reduce/reduce conflict
Conflicts:
----------
Conflict in state 15 between rule 8 and token '+' resolved as reduce.
Conflict in state 15 between rule 8 and token '=' resolved as reduce.
Conflict in state 17 between rule 9 and token '+' resolved as shift.
Conflict in state 17 between rule 9 and token '=' resolved as shift.
State 18 contains 1 reduce/reduce conflict
Rules:
------
0: $start -> prog $end
1: prog -> /* empty */
2: prog -> prog stmt
3: stmt -> expr ';'
4: stmt -> decl
5: expr -> ID
6: expr -> NUM
7: expr -> INT '(' expr ')'
8: expr -> expr '+' expr
9: expr -> expr '=' expr
10: decl -> INT declarator ';'
11: decl -> INT declarator '=' expr ';'
12: declarator -> ID
13: declarator -> '(' declarator ')'
States:
-------
State 0:
$start -> . prog $end (Rule 0)
$default reduce using rule 1 (prog)
prog go to state 1
State 1:
$start -> prog . $end (Rule 0)
prog -> prog . stmt (Rule 2)
$end shift, and go to state 5
ID shift, and go to state 3
INT shift, and go to state 8
NUM shift, and go to state 2
stmt go to state 4
expr go to state 7
decl go to state 6
State 2:
expr -> NUM . (Rule 6)
$default reduce using rule 6 (expr)
State 3:
expr -> ID . (Rule 5)
$default reduce using rule 5 (expr)
State 4:
prog -> prog stmt . (Rule 2)
$default reduce using rule 2 (prog)
State 5:
$start -> prog $end . (Rule 0)
$default accept
State 6:
stmt -> decl . (Rule 4)
$default reduce using rule 4 (stmt)
State 7:
stmt -> expr . ';' (Rule 3)
expr -> expr . '+' expr (Rule 8)
expr -> expr . '=' expr (Rule 9)
'+' shift, and go to state 9
';' shift, and go to state 10
'=' shift, and go to state 11
State 8:
expr -> INT . '(' expr ')' (Rule 7)
decl -> INT . declarator ';' (Rule 10)
decl -> INT . declarator '=' expr ';' (Rule 11)
'(' shift, and go to state 13
ID shift, and go to state 12
declarator go to state 14
State 9:
expr -> expr '+' . expr (Rule 8)
ID shift, and go to state 3
INT shift, and go to state 16
NUM shift, and go to state 2
expr go to state 15
State 10:
stmt -> expr ';' . (Rule 3)
$default reduce using rule 3 (stmt)
State 11:
expr -> expr '=' . expr (Rule 9)
ID shift, and go to state 3
INT shift, and go to state 16
NUM shift, and go to state 2
expr go to state 17
State 12:
declarator -> ID . (Rule 12)
$default reduce using rule 12 (declarator)
State 13:
expr -> INT '(' . expr ')' (Rule 7)
declarator -> '(' . declarator ')' (Rule 13)
'(' shift, and go to state 19
ID shift, and go to state 18
INT shift, and go to state 16
NUM shift, and go to state 2
expr go to state 20
declarator go to state 21
State 14:
decl -> INT declarator . ';' (Rule 10)
decl -> INT declarator . '=' expr ';' (Rule 11)
';' shift, and go to state 22
'=' shift, and go to state 23
State 15:
expr -> expr . '+' expr (Rule 8)
expr -> expr '+' expr . (Rule 8)
expr -> expr . '=' expr (Rule 9)
')' reduce using rule 8 (expr)
'+' reduce using rule 8 (expr)
';' reduce using rule 8 (expr)
'=' reduce using rule 8 (expr)
State 16:
expr -> INT . '(' expr ')' (Rule 7)
'(' shift, and go to state 24
State 17:
expr -> expr . '+' expr (Rule 8)
expr -> expr . '=' expr (Rule 9)
expr -> expr '=' expr . (Rule 9)
'+' shift, and go to state 9
'=' shift, and go to state 11
')' reduce using rule 9 (expr)
';' reduce using rule 9 (expr)
State 18:
expr -> ID . (Rule 5)
declarator -> ID . (Rule 12)
')' [reduce using rule 12 (declarator)]
')' reduce using rule 5 (expr)
'+' reduce using rule 5 (expr)
'=' reduce using rule 5 (expr)
State 19:
declarator -> '(' . declarator ')' (Rule 13)
'(' shift, and go to state 19
ID shift, and go to state 12
declarator go to state 21
State 20:
expr -> INT '(' expr . ')' (Rule 7)
expr -> expr . '+' expr (Rule 8)
expr -> expr . '=' expr (Rule 9)
')' shift, and go to state 25
'+' shift, and go to state 9
'=' shift, and go to state 11
State 21:
declarator -> '(' declarator . ')' (Rule 13)
')' shift, and go to state 26
State 22:
decl -> INT declarator ';' . (Rule 10)
$default reduce using rule 10 (decl)
State 23:
decl -> INT declarator '=' . expr ';' (Rule 11)
ID shift, and go to state 3
INT shift, and go to state 16
NUM shift, and go to state 2
expr go to state 27
State 24:
expr -> INT '(' . expr ')' (Rule 7)
ID shift, and go to state 3
INT shift, and go to state 16
NUM shift, and go to state 2
expr go to state 20
State 25:
expr -> INT '(' expr ')' . (Rule 7)
$default reduce using rule 7 (expr)
State 26:
declarator -> '(' declarator ')' . (Rule 13)
$default reduce using rule 13 (declarator)
State 27:
expr -> expr . '+' expr (Rule 8)
expr -> expr . '=' expr (Rule 9)
decl -> INT declarator '=' expr . ';' (Rule 11)
'+' shift, and go to state 9
';' shift, and go to state 28
'=' shift, and go to state 11
State 28:
decl -> INT declarator '=' expr ';' . (Rule 11)
$default reduce using rule 11 (decl)
Summary:
--------
Number of rules : 14
Number of terminals : 9
Number of non-terminals : 6
Number of states : 29