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"
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COPYRIGHT (c) 1989 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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MessageNode subclass:#CascadeNode
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instanceVariableNames:''
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classVariableNames:''
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poolDictionaries:''
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category:'System-Compiler-Support'
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!
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CascadeNode comment:'
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COPYRIGHT (c) 1989 by Claus Gittinger
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All Rights Reserved
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$Header: /cvs/stx/stx/libcomp/CascadeNode.st,v 1.7 1994-08-22 12:39:47 claus Exp $
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'!
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!CascadeNode class methodsFor:'documentation'!
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copyright
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"
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COPYRIGHT (c) 1989 by Claus Gittinger
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All Rights Reserved
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This software is furnished under a license and may be used
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only in accordance with the terms of that license and with the
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inclusion of the above copyright notice. This software may not
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be provided or otherwise made available to, or used by, any
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other person. No title to or ownership of the software is
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hereby transferred.
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"
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!
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version
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"
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$Header: /cvs/stx/stx/libcomp/CascadeNode.st,v 1.7 1994-08-22 12:39:47 claus Exp $
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"
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!
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documentation
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"
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node for parse-trees, representing cascade message sends
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"
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! !
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!CascadeNode methodsFor: 'code generation'!
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codeOn:aStream inBlock:b valueNeeded:valueNeeded
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receiver codeForCascadeOn:aStream inBlock:b.
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self codeSendOn:aStream inBlock:b valueNeeded:valueNeeded
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!
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codeForCascadeOn:aStream inBlock:b
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receiver codeForCascadeOn:aStream inBlock:b.
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aStream nextPut:#dup.
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self codeSendOn:aStream inBlock:b valueNeeded:false
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! !
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!CascadeNode methodsFor: 'printing'!
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printOn:aStream indent:i
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|needParen selectorParts index index2 arg nargs|
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index := 1.
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selectorParts := OrderedCollection new.
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[index == 0] whileFalse:[
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index2 := selector indexOf:$: startingAt:index.
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index2 ~~ 0 ifTrue:[
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selectorParts add:(selector copyFrom:index to:index2).
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index2 := index2 + 1
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].
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index := index2
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].
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receiver printOn:aStream indent:i.
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aStream nextPutAll:'; '.
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nargs := argArray size.
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nargs == 0 ifTrue:[
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selector printOn:aStream
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] ifFalse:[
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1 to:nargs do:[:argIndex |
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aStream space.
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(selectorParts at:argIndex) printOn:aStream.
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aStream space.
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arg := argArray at:argIndex.
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needParen := false.
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arg isMessage ifTrue:[
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arg isBinaryMessage ifFalse:[
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arg isUnaryMessage ifFalse:[
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needParen := true
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]
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].
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].
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needParen ifTrue:[
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aStream nextPutAll:'('
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].
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arg printOn:aStream indent:i.
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needParen ifTrue:[
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aStream nextPutAll:') '
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].
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]
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]
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! !
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!CascadeNode methodsFor: 'evaluating'!
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evaluate
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|t argValueArray|
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0
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receiver isSuper ifTrue:[
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^ super evaluate
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].
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t := receiver evaluateForCascade.
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argArray isNil ifTrue:[
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t perform:selector.
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^ t
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].
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argValueArray := argArray collect:[:arg | arg evaluate].
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^ t perform:selector withArguments:argValueArray
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!
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evaluateForCascade
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3
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|t argValueArray|
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0
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receiver isSuper ifTrue:[
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^ super evaluateForCascade
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].
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t := receiver evaluateForCascade.
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argArray isNil ifTrue:[
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t perform:selector.
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^ t
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].
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argValueArray := argArray collect:[:arg | arg evaluate].
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t perform:selector withArguments:argValueArray.
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^ t
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! !
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