61 lines
1013 B
Smalltalk
61 lines
1013 B
Smalltalk
|
"
|
||
|
|
PPMemento is an internal class used by PPMemoizedParser to cache results and detect left-recursive calls.
|
||
|
|
|
||
|
|
Instance Variables:
|
||
|
|
result <Object> The cached result.
|
||
|
|
count <Integer> The number of recursive cycles followed.
|
||
|
|
|
||
|
|
"
|
||
|
|
Class {
|
||
|
|
#name : 'PPMemento',
|
||
|
|
#superclass : 'Object',
|
||
|
|
#instVars : [
|
||
|
|
'result',
|
||
|
|
'count',
|
||
|
|
'context'
|
||
|
|
],
|
||
|
|
#category : 'PetitParser-Core'
|
||
|
|
}
|
||
|
|
|
||
|
|
{ #category : 'instance creation' }
|
||
|
|
PPMemento class >> new [
|
||
|
|
^ self basicNew initialize
|
||
|
|
]
|
||
|
|
|
||
|
|
{ #category : 'accessing' }
|
||
|
|
PPMemento >> contextMemento [
|
||
|
|
^ context
|
||
|
|
]
|
||
|
|
|
||
|
|
{ #category : 'accessing' }
|
||
|
|
PPMemento >> contextMemento: aPPContextMemento [
|
||
|
|
context := aPPContextMemento
|
||
|
|
|
||
|
|
]
|
||
|
|
|
||
|
|
{ #category : 'accessing-readonly' }
|
||
|
|
PPMemento >> count [
|
||
|
|
^ count
|
||
|
|
]
|
||
|
|
|
||
|
|
{ #category : 'actions' }
|
||
|
|
PPMemento >> increment [
|
||
|
|
count := count + 1
|
||
|
|
]
|
||
|
|
|
||
|
|
{ #category : 'initialization' }
|
||
|
|
PPMemento >> initialize [
|
||
|
|
count := 0
|
||
|
|
|
||
|
|
]
|
||
|
|
|
||
|
|
{ #category : 'accessing' }
|
||
|
|
PPMemento >> result [
|
||
|
|
^ result
|
||
|
|
]
|
||
|
|
|
||
|
|
{ #category : 'accessing' }
|
||
|
|
PPMemento >> result: anObject [
|
||
|
|
result := anObject
|
||
|
|
]
|