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"
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COPYRIGHT (c) 1989 by Claus Gittinger
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53
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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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Object subclass:#ParseNode
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instanceVariableNames:'type comments parenthized'
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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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ParseNode comment:'
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COPYRIGHT (c) 1989 by Claus Gittinger
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All Rights Reserved
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33
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103
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$Header: /cvs/stx/stx/libcomp/ParseNode.st,v 1.11 1995-08-11 16:03:30 claus Exp $
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'!
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!ParseNode 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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53
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All Rights Reserved
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20
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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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103
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$Header: /cvs/stx/stx/libcomp/ParseNode.st,v 1.11 1995-08-11 16:03:30 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; abstract class
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"
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! !
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!ParseNode class methodsFor:'instance creation'!
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type:t
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^ (self basicNew) type:t
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! !
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!ParseNode methodsFor:'queries'!
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isConstant
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"return true, if this is a node for a constant"
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^ false
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!
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isGlobal
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"return true, if this is a node for a global variable"
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^ false
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!
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isPrimary
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"return true, if this is a node for a primary (i.e. non-send)"
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^ false
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!
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isSuper
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"return true, if this is a super-node"
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^ false
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!
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isReturnNode
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"return true, if this is a node for a return expression"
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^ false
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!
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isBlockNode
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"return true, if this is a node for a block"
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^ false
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!
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isAssignment
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"return true, if this is a node for an assignment"
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^ false
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!
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isMessage
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"return true, if this is a node for a message expression"
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^ false
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!
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isBinaryMessage
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"return true, if this is a node for a binary send"
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^ false
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!
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isUnaryMessage
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"return true, if this is a node for a unary send"
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^ false
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! !
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!ParseNode methodsFor:'accessing'!
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type
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"return the nodes type"
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^ type
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!
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lineNumber:dummy
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"set linenumber - ignored here"
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^ self
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!
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parenthized:aBoolean
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parenthized := aBoolean
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!
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parenthized
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^ parenthized
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! !
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!ParseNode methodsFor:'private'!
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type:t
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"set the nodes type"
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type := t
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! !
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!ParseNode methodsFor:'printing'!
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printString
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|stream|
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stream := WriteStream on:String new.
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self printOn:stream indent:0.
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^ stream contents
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!
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printOn:aStream
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self printOn:aStream indent:0
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! !
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!ParseNode methodsFor:'checks'!
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plausibilityCheck
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^ nil
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! !
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!ParseNode methodsFor:'evaluation'!
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evaluateForCascade
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^ self evaluate
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! !
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!ParseNode methodsFor:'code generation'!
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codeForSideEffectOn:aStream inBlock:b
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"generate code for this statement - value not needed"
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self codeOn:aStream inBlock:b.
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185 |
aStream nextPut:#drop
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! !
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