SmallSense__CompletionEngine.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Tue, 13 May 2014 16:34:38 +0100
changeset 205 43bee6463c53
parent 192 f27ce6dac101
child 210 1922d415c704
permissions -rw-r--r--
Introduced notion of `environment` to completion context. A completion engine should use given environment (passed in context) to look up classes and methods. This allow for further customization of completion by providing custom environment.
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"{ Package: 'jv:smallsense' }"
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"{ NameSpace: SmallSense }"
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Object subclass:#CompletionEngine
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	instanceVariableNames:'codeView result context'
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	classVariableNames:''
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	poolDictionaries:''
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	category:'SmallSense-Core'
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!
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!CompletionEngine class methodsFor:'accessing'!
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exactMatcher
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    "Return a match block returning true, if given selector start with given prefix"
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    ^ [ :prefix :selector | selector startsWith: prefix ]
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    "Created: / 08-04-2014 / 21:31:18 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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inexactMatcher
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    "Return a match block returning true, if given prefix matches given selector"
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    ^ [ :prefix :selector |
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        prefix size < 5 ifTrue:[ 
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            selector startsWith: prefix.  
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        ] ifFalse:[ 
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            | part |
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            part := selector copyTo: (prefix size min: selector size).
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            (prefix levenshteinTo: part) < 15
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        ].
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    ].
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    "Created: / 08-04-2014 / 21:30:30 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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matcher
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    "Return a match block returning true, if given prefix matches given selector"
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    ^ [ :prefix :selector |
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        prefix size < 5 ifTrue:[ 
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            selector startsWith: prefix.  
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        ] ifFalse:[ 
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            | part |
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            part := selector copyTo: (prefix size min: selector size).
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            (prefix levenshteinTo: part) < 15
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        ].
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    ].
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    "Created: / 02-04-2014 / 23:30:00 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!CompletionEngine class methodsFor:'testing'!
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isAbstract
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    ^ self == CompletionEngine
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    "Created: / 02-10-2013 / 13:11:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!CompletionEngine methodsFor:'completion'!
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complete: aCompletionContext
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    "Compute completion for given completion context, taking all the information
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     from it. Returns a CompletionResult with computed completions"
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    context := aCompletionContext.
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    result := CompletionResult new.
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    codeView := context codeView.
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    result context: context.
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    ^ self complete.
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    "Created: / 21-01-2014 / 23:07:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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completeFor: aCodeView2OrTextEditView
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    "Compute completion for given codeView, taking all the information
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     from it. Returns a CompletionResult with computed completions"
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    codeView := aCodeView2OrTextEditView.
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    result := CompletionResult new.
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    ^ self complete.
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    "Created: / 02-10-2013 / 13:24:43 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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    "Modified: / 03-10-2013 / 16:42:19 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!CompletionEngine methodsFor:'completion-individual'!
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addMethodsStartingWith: prefix
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    ^ self addMethodsStartingWith: prefix stripOff: nil filter: nil
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    "Created: / 24-07-2013 / 13:10:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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    "Modified: / 08-04-2014 / 21:36:54 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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addMethodsStartingWith: prefix stripOff: stripoffPrefix 
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    ^ self addMethodsStartingWith: prefix stripOff: stripoffPrefix filter: nil
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    "Created: / 08-04-2014 / 21:36:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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addMethodsStartingWith: prefix stripOff: stripoffPrefix filter: filterOrNil
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    | matcher |
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    matcher := stripoffPrefix isEmptyOrNil ifTrue:[ CompletionEngine inexactMatcher ] ifFalse:[ CompletionEngine exactMatcher ].
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    ^ self addMethodsStartingWith: prefix stripOff: stripoffPrefix filter: filterOrNil matcher: matcher.
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    "Created: / 08-04-2014 / 21:35:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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!
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addMethodsStartingWith: prefix stripOff: stripoffPrefix filter: filterOrNil matcher: matcher
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    | matchPrefix selectors filter |
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    selectors := Dictionary new.
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    matchPrefix := stripoffPrefix isNil ifTrue:[ prefix ] ifFalse:[ stripoffPrefix , prefix ]. 
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    filter := filterOrNil  isNil ifTrue:[ [:method | true ] ] ifFalse:[ filterOrNil  ].
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    context environment allMethodsWithSelectorDo:[:mthd :selector|
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        (mthd isSynthetic not and:[(filter value: mthd) and:[ matcher value: matchPrefix value: selector]]) ifTrue:[
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            | class skip |
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            class := mthd mclass superclass.
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            skip := false.
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            [ skip not and:[class notNil] ] whileTrue:[
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                (class methodDictionary includesKey: selector) ifTrue:[
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                    skip := true.
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                ].
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                class := class superclass.
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            ].
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            skip ifFalse:[
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                | classes |
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                classes := selectors at: selector ifAbsentPut:[ Set new ].
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                (classes includes: mthd mclass) ifFalse:[
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                    classes add: mthd mclass.
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                ].
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            ].
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        ]
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    ].
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    selectors keysAndValuesDo: [:selector :classes|
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        result add:(MethodPO 
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                name:selector
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                class:(classes size == 1 ifTrue:[classes anElement] ifFalse:[classes])
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                stripOff: stripoffPrefix)
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    ]
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192
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    "Created: / 08-04-2014 / 21:34:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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    "Modified: / 13-05-2014 / 12:30:10 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!CompletionEngine methodsFor:'completion-private'!
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complete
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    "Compute completion for `codeView`, taking all the information
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     from it. Returns a CompletionResult with computed completions"        
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    ^ self subclassResponsibility
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    "Modified (comment): / 02-10-2013 / 13:33:23 / Jan Vrany <jan.vrany@fit.cvut.cz>"
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! !
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!CompletionEngine class methodsFor:'documentation'!
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version_HG
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    ^ '$Changeset: <not expanded> $'
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! !
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   176