"{ NameSpace: SmallSense }"

Object subclass:#CompletionEngine

	instanceVariableNames:'codeView result context'

	classVariableNames:''

	poolDictionaries:''

	category:'SmallSense-Core'

!

!CompletionEngine class methodsFor:'accessing'!

exactMatcher

    "Return a match block returning true, if given selector start with given prefix"

    ^ [ :prefix :selector | selector startsWith: prefix ]

    "Created: / 08-04-2014 / 21:31:18 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

inexactMatcher

    "Return a match block returning true, if given prefix matches given selector"

    ^ [ :prefix :selector |

        prefix size < 5 ifTrue:[

            selector startsWith: prefix.

        ] ifFalse:[

            | part |

            part := selector copyTo: (prefix size min: selector size).

            (prefix levenshteinTo: part) < 15

        ].

    ].

    "Created: / 08-04-2014 / 21:30:30 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

matcher

    "Return a match block returning true, if given prefix matches given selector"

    ^ [ :prefix :selector |

        prefix size < 5 ifTrue:[

            selector startsWith: prefix.

        ] ifFalse:[

            | part |

            part := selector copyTo: (prefix size min: selector size).

            (prefix levenshteinTo: part) < 15

        ].

    ].

    "Created: / 02-04-2014 / 23:30:00 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CompletionEngine class methodsFor:'testing'!

isAbstract

    ^ self == CompletionEngine

    "Created: / 02-10-2013 / 13:11:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CompletionEngine methodsFor:'completion'!

complete: aCompletionContext

    "Compute completion for given completion context, taking all the information

     from it. Returns a CompletionResult with computed completions"

    context := aCompletionContext.

    result := CompletionResult new.

    codeView := context codeView.

    result context: context.

    ^ self complete.

    "Created: / 21-01-2014 / 23:07:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CompletionEngine methodsFor:'completion-individual'!

addMethodsStartingWith: prefix

    ^ self addMethodsStartingWith: prefix stripOff: nil filter: nil

    "Created: / 24-07-2013 / 13:10:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 08-04-2014 / 21:36:54 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

addMethodsStartingWith: prefix stripOff: stripoffPrefix

    ^ self addMethodsStartingWith: prefix stripOff: stripoffPrefix filter: nil

    "Created: / 08-04-2014 / 21:36:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

addMethodsStartingWith: prefix stripOff: stripoffPrefix filter: filterOrNil

    | matcher |

    matcher := stripoffPrefix isEmptyOrNil ifTrue:[ CompletionEngine inexactMatcher ] ifFalse:[ CompletionEngine exactMatcher ].

    ^ self addMethodsStartingWith: prefix stripOff: stripoffPrefix filter: filterOrNil matcher: matcher.

    "Created: / 08-04-2014 / 21:35:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

addMethodsStartingWith: prefix stripOff: stripoffPrefix filter: filterOrNil matcher: matcher

    | matchPrefix selectors filter |

    selectors := Dictionary new.

    matchPrefix := stripoffPrefix isNil ifTrue:[ prefix ] ifFalse:[ stripoffPrefix , prefix ].

    filter := filterOrNil  isNil ifTrue:[ [:method | true ] ] ifFalse:[ filterOrNil  ].

    context environment allMethodsWithSelectorDo:[:mthd :selector|

        (mthd isSynthetic not and:[(filter value: mthd) and:[ matcher value: matchPrefix value: selector]]) ifTrue:[

                | class overridden |

                class := mthd mclass superclass.

                overridden := false.

                [ overridden not and:[class notNil] ] whileTrue:[

                    (class methodDictionary includesKey: selector) ifTrue:[

                        overridden := true.

                    ].

                    class := class superclass.

                ].

                overridden ifFalse:[

                    | classes |

                    classes := selectors at: selector ifAbsentPut:[ Set new ].

                    (classes includes: mthd mclass) ifFalse:[

                        classes add: mthd mclass.

                    ].

                ].

            ]

    ].

    selectors keysAndValuesDo: [:selector :classes |

        result add:(PO forClasses: classes selector: selector prefix: stripoffPrefix)

    ].

    ^ self

    "Created: / 08-04-2014 / 21:34:36 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 23-05-2014 / 11:54:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CompletionEngine methodsFor:'completion-private'!

complete

    "Compute completion for `codeView`, taking all the information

     from it. Returns a CompletionResult with computed completions"

    ^ self subclassResponsibility

    "Modified (comment): / 02-10-2013 / 13:33:23 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!CompletionEngine class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'

! !