"{ Package: 'jv:smallsense' }"

"{ NameSpace: SmallSense }"

SmalltalkParseNodeVisitor subclass:#SmalltalkParseNodeFinder

	instanceVariableNames:'position match previous'

	classVariableNames:''

	poolDictionaries:''

	category:'SmallSense-Smalltalk'

!

!SmalltalkParseNodeFinder methodsFor:'finding'!

findNodeIn: source tree: tree comments: comments line: line column: col

    | sourceS |

    sourceS := source readStream.

    line - 1 timesRepeat:[

        (sourceS nextLine) isNil ifTrue:[

            "No such line"                                

            ^nil

        ].        

    ].

    ^self findNodeIn: source tree: tree comments: comments position: sourceS position + col

    "Created: / 29-01-2014 / 10:20:00 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

findNodeIn: source tree: tree comments: comments position: pos

    | i s |

    position := pos - 1.

    i := 1.

    [ i < comments size and:[ (s :=comments at:i) notNil ] ] whileTrue:[ 

        (pos >= s and:[ pos <= (s + (comments at: i + 1) - 1)]) ifTrue:[ 

            ^ nil -> pos.

        ].

        i := i + 2.

    ].

    self visit: tree.

    ^(match ? previous) ->  pos.

    "Created: / 29-01-2014 / 10:20:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!SmalltalkParseNodeFinder methodsFor:'visiting'!

visit:anObject 

    anObject isNil ifTrue:[^self].

    (anObject endPosition notNil and:[position > anObject endPosition]) ifTrue:[

        previous := anObject.

        anObject acceptVisitor: self.

        ^self.

    ].

    (anObject startPosition notNil 

        and:[anObject endPosition notNil 

        and:[position between: anObject startPosition and: anObject endPosition]]) ifTrue:[

        match := anObject.

    ].

    anObject acceptVisitor: self.

    "Created: / 26-11-2011 / 15:40:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 19-09-2013 / 11:15:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

visitStatementNode:anObject 

    self visit: anObject expression.

    self visit: anObject nextStatement.

    "Modified: / 25-07-2011 / 22:34:44 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Created: / 26-11-2011 / 15:40:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!SmalltalkParseNodeFinder class methodsFor:'documentation'!

version_HG

    ^ '$Changeset: <not expanded> $'

!

version_SVN

    ^ '$Id: SmallSense__SmalltalkParseNodeFinder.st,v 1.2 2014/02/12 14:49:29 sr Exp $'

! !