author | Claus Gittinger <cg@exept.de> |
Mon, 12 Jul 1999 17:13:44 +0200 | |
changeset 904 | 32b8cf2e577d |
parent 861 | ccaa0ba5e7af |
child 1035 | 8848672cb893 |
permissions | -rw-r--r-- |
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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 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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documentation |
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" |
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node for parse-trees, representing cascade message sends |
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This is a helper class for the compiler. |
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[author:] |
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Claus Gittinger |
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" |
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! ! |
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!CascadeNode methodsFor:'code generation'! |
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codeForCascadeOn:aStream inBlock:b for:aCompiler |
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receiver codeForCascadeOn:aStream inBlock:b for:aCompiler. |
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aStream nextPut:#dup. |
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self codeSendOn:aStream inBlock:b valueNeeded:false for:aCompiler |
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! |
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codeOn:aStream inBlock:b valueNeeded:valueNeeded for:aCompiler |
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receiver codeForCascadeOn:aStream inBlock:b for:aCompiler. |
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self codeSendOn:aStream inBlock:b valueNeeded:valueNeeded for:aCompiler |
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! ! |
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!CascadeNode methodsFor:'enumeration'! |
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nodeDo:anEnumerator |
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"helper for parse tree walking" |
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"/ sigh; ST/X encodes things differently ... |
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|r nd msgs msg| |
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msgs := OrderedCollection new. |
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r := receiver. |
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[r isCascade] whileTrue:[ |
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r := r receiver. |
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]. |
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r := r receiver. |
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nd := self. |
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[nd isCascade] whileTrue:[ |
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msg := MessageNode new. |
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msg receiver:r selector:nd selector args:nd args lineno:nd lineNumber. |
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msgs addFirst:msg. |
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nd := nd receiver. |
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]. |
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msg := MessageNode new. |
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msg receiver:r selector:nd selector args:nd args lineno:nd lineNumber. |
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msgs addFirst:msg. |
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^ anEnumerator doCascade:self receiver:r messages:msgs |
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added node-walk facility (ST80 compatibility)
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parents:
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added node-walk facility (ST80 compatibility)
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parents:
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diff
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"Created: 19.6.1997 / 16:39:17 / cg" |
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"Modified: 19.6.1997 / 17:32:47 / cg" |
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parents:
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! ! |
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parents:
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diff
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!CascadeNode methodsFor:'evaluating'! |
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evaluate |
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|t argValueArray| |
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selector := selector asSymbol. |
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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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parents:
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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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|t argValueArray| |
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parents:
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selector := selector asSymbol. |
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receiver isSuper ifTrue:[ |
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parents:
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diff
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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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parents:
819
diff
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t perform:selector. |
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parents:
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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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!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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parents:
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!CascadeNode methodsFor:'queries'! |
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isCascade |
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^ true |
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"Created: / 16.7.1998 / 20:03:51 / cg" |
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parents:
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! ! |
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parents:
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!CascadeNode class methodsFor:'documentation'! |
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version |
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parents:
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diff
changeset
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^ '$Header: /cvs/stx/stx/libcomp/CascadeNode.st,v 1.20 1999-06-23 22:17:55 cg Exp $' |
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! ! |