"{ Package: 'stx:libcomp' }"

ParseNodeVisitor subclass:#ParseNodeValidator

	instanceVariableNames:'stack source'

	classVariableNames:''

	poolDictionaries:''

	category:'System-Compiler-Support'

!

!ParseNodeValidator class methodsFor:'documentation'!

documentation

"

    A helper class used to validate parse tree, i.e. parent instvar,

    startPosition/endPositions. Useful only for Parser debugging/hacking.

    [author:]

        Jan Vrany <jan.vrany@fit.cvut.cz>

    [instance variables:]

    [class variables:]

    [see also:]

"

! !

!ParseNodeValidator class methodsFor:'validation'!

validate: aParseNode source: source

    ^self basicNew validate: aParseNode source: source

    "Created: / 27-07-2011 / 13:43:22 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

validateClass: cls stopOnError: stopOnError

    | validate |

    validate := [:mth|

        [ 

            | src |

            src := mth source.

            self validate: (Parser parseMethod: src) tree source: src.

        ] on: Error do:[:ex|

            Transcript 

                cr;

                show: mth printString;

                show: '...FAILED!!';

                cr.                        

            stopOnError ifTrue:[

                ex pass

            ].

        ].

    ].

    cls theMetaclass methodsDo: validate.

    cls theNonMetaclass methodsDo: validate.

    "Created: / 01-08-2011 / 12:47:34 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

validateImage

    self validateImage: false.

    "Created: / 20-07-2011 / 20:41:34 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

validateImage: stopOnError

    | i |

    i := 0.

    Smalltalk allClassesDo:[:cls|

        cls isLoaded ifTrue:[

            i == 50 ifTrue:[

                Transcript cr.

                i := 0.

            ].

            i := i + 1.

            Transcript nextPut:$..

            self validateClass: cls stopOnError: stopOnError

        ].

    ].

    "Created: / 20-07-2011 / 20:42:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!ParseNodeValidator methodsFor:'validation'!

validate: tree source: src

    tree isNil ifTrue:[^self].

    source := src.

    stack := Stack with: nil.

    ^self visit: tree

    "Created: / 27-07-2011 / 13:43:01 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

validateNode:node 

    self assert: node startPosition isInteger.

    self assert: node endPosition isInteger.

    self assert: node parent == stack top

    "Modified: / 27-07-2011 / 13:47:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!ParseNodeValidator methodsFor:'visiting'!

visit:anObject 

    |accept stmt|

    accept := 

            [:node | 

            stack push:node.

            node acceptVisitor:self.

            stack pop.

            self validateNode:node. ].

    ^ anObject isStatementNode 

        ifTrue:

            [ stmt := anObject.

            [ stmt isNil ] whileFalse:

                    [ accept value:stmt.

                    stmt := stmt nextStatement. ] ]

        ifFalse:[ accept value:anObject. ]

    "Created: / 25-07-2011 / 23:14:07 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

visitBlockNode:anObject

    self assert: (source at: anObject startPosition) == $[.

    self assert: (source at: anObject endPosition) == $].

    super visitBlockNode: anObject.

    "Modified: / 25-07-2011 / 22:38:45 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Created: / 20-08-2011 / 23:21:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Created: / 21-08-2011 / 13:52:50 / cg"

!

visitVariableNode:anObject

    | s e |

    s := anObject startPosition.

    e := anObject endPosition.

    (s ~~ -1 and:[e ~~ -1 and:[                       

        #(MethodVariable InstanceVariable) includes: anObject type]]) ifTrue:[

            self assert: anObject name = 

                (source copyFrom: anObject startPosition to: anObject endPosition).

    ].

    super visitVariableNode: anObject.

    "Created: / 20-08-2011 / 23:21:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 21-08-2011 / 13:51:55 / cg"

    "Modified: / 25-08-2011 / 14:03:16 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!ParseNodeValidator class methodsFor:'documentation'!

version

    ^ '$Header: /cvs/stx/stx/libcomp/ParseNodeValidator.st,v 1.8 2011-08-25 13:38:46 vrany Exp $'

!

version_CVS

    ^ '$Header: /cvs/stx/stx/libcomp/ParseNodeValidator.st,v 1.8 2011-08-25 13:38:46 vrany Exp $'

! !