author | Claus Gittinger <cg@exept.de> |
Tue, 20 May 2003 12:04:06 +0200 | |
changeset 1420 | 57f3f5c8a070 |
parent 1409 | e965cfbd9a78 |
child 1500 | 3c4cb012b24b |
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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||
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"{ Package: 'stx:libcomp' }" |
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MessageNode subclass:#BinaryNode |
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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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||
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!BinaryNode class methodsFor:'documentation'! |
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||
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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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32 |
be provided or otherwise made available to, or used by, any |
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33 |
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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||
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documentation |
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" |
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node for parse-trees, representing binary 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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! ! |
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!BinaryNode methodsFor:'accessing'! |
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||
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arg |
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^ argArray at:1 |
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! ! |
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||
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!BinaryNode methodsFor:'code generation'! |
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||
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codeForSideEffectOn:aStream inBlock:b for:aCompiler |
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"generate code for this statement - value not needed" |
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(selector == #= |
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or:[selector == #~= |
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or:[selector == #==]]) ifTrue:[ |
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receiver isVariable ifTrue:[ |
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aCompiler |
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warning:'possible typing error: ''='' instead of '':=''' |
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position:selectorPosition to:selectorPosition. |
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] |
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]. |
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|
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^ super codeForSideEffectOn:aStream inBlock:b for:aCompiler |
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|
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"Created: 5.8.1997 / 02:32:55 / cg" |
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"Modified: 5.8.1997 / 02:50:18 / cg" |
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! |
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codeOn:aStream inBlock:b for:aCompiler |
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|arg1 recVal argVal code| |
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receiver isSuper ifFalse:[ |
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(aCompiler isBuiltInBinarySelector:selector forReceiver:receiver) ifTrue:[ |
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"/ ( #(== ~~ = ~= + - < <= > >=) includes:selector) ifTrue:[ |
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arg1 := argArray at:1. |
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receiver isConstant ifTrue:[ |
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recVal := receiver value. |
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(receiver type == #Integer) ifTrue:[ |
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((selector == #==) or:[selector == #~~]) ifTrue:[ |
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recVal == 0 ifTrue:[ |
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arg1 codeOn:aStream inBlock:b for:aCompiler. |
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(selector == #==) ifTrue:[ |
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code := #eq0 |
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] ifFalse:[ |
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code := #ne0 |
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]. |
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aStream nextPut:code. |
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^ self |
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] |
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]. |
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]. |
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recVal == nil ifTrue:[ |
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((selector == #==) or:[selector == #~~]) ifTrue:[ |
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arg1 codeOn:aStream inBlock:b for:aCompiler. |
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(selector == #==) ifTrue:[ |
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code := #isNil |
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] ifFalse:[ |
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code := #notNil |
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]. |
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aStream nextPut:code. |
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^ self |
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] |
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]. |
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|
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"/ disabled this, since it is confusing if the error is reported |
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"/ by the argument as receiver (i.e. transforms 1+foo into foo+1) |
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"/ and it might also be incorrect. |
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"/ (selector == #+) ifTrue:[ |
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"/ (recVal == 1) ifTrue:[ |
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"/ arg1 codeOn:aStream inBlock:b for:aCompiler. |
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"/ aStream nextPut:#plus1; nextPut:lineNr. |
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"/ ^ self |
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"/ ] |
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"/ ] |
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]. |
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|
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receiver codeOn:aStream inBlock:b for:aCompiler. |
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arg1 isConstant ifTrue:[ |
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argVal := arg1 value. |
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(arg1 type == #Integer) ifTrue:[ |
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((selector == #==) or:[selector == #~~]) ifTrue:[ |
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(argVal == 0) ifTrue:[ |
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(selector == #==) ifTrue:[ |
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code := #eq0 |
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] ifFalse:[ |
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code := #ne0 |
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]. |
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aStream nextPut:code. |
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^ self |
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] |
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]. |
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selector == #> ifTrue:[ |
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argVal == 0 ifTrue:[ |
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aStream nextPut:#gt0; nextPut:lineNr. |
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^ self |
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] |
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]. |
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((selector == #+) or:[selector == #-]) ifTrue:[ |
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(argVal == 1) ifTrue:[ |
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(selector == #+) ifTrue:[ |
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code := #plus1 |
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] ifFalse:[ |
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code := #minus1 |
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153 |
]. |
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aStream nextPut:code; nextPut:lineNr. |
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^ self |
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] |
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] |
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158 |
]. |
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argVal isNil ifTrue:[ |
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(selector == #==) ifTrue:[ |
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aStream nextPut:#isNil. |
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^ self |
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163 |
]. |
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164 |
(selector == #~~) ifTrue:[ |
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aStream nextPut:#notNil. |
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^ self |
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167 |
]. |
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] |
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]. |
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arg1 codeOn:aStream inBlock:b for:aCompiler. |
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aStream nextPut:selector. |
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(aCompiler hasLineNumber:selector) ifTrue:[ |
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aStream nextPut:lineNr. |
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]. |
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^ self |
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] |
0 | 177 |
]. |
104 | 178 |
^ super codeOn:aStream inBlock:b for:aCompiler |
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|
885 | 180 |
"Modified: / 4.7.1999 / 19:05:13 / cg" |
0 | 181 |
! ! |
182 |
||
1035 | 183 |
!BinaryNode methodsFor:'evaluation'! |
140 | 184 |
|
1384 | 185 |
evaluateIn:anEnvironment |
140 | 186 |
receiver isSuper ifTrue:[ |
1384 | 187 |
^ super evaluateIn:anEnvironment |
140 | 188 |
]. |
1384 | 189 |
^ (receiver evaluateIn:anEnvironment) |
190 |
perform:selector |
|
191 |
with:((argArray at:1) evaluateIn:anEnvironment) |
|
140 | 192 |
! ! |
193 |
||
1079 | 194 |
!BinaryNode methodsFor:'printing & storing'! |
0 | 195 |
|
196 |
printOn:aStream indent:i |
|
197 |
|needParen| |
|
198 |
||
199 |
needParen := false. |
|
200 |
receiver isMessage ifTrue:[ |
|
1388 | 201 |
receiver isUnaryMessage ifFalse:[ |
202 |
needParen := true |
|
203 |
]. |
|
0 | 204 |
]. |
205 |
needParen ifTrue:[ |
|
1388 | 206 |
aStream nextPutAll:'(' |
0 | 207 |
]. |
208 |
receiver printOn:aStream. |
|
209 |
needParen ifTrue:[ |
|
1388 | 210 |
aStream nextPutAll:') ' |
0 | 211 |
]. |
212 |
||
213 |
aStream space. |
|
1388 | 214 |
self printSelectorOn:aStream. |
0 | 215 |
aStream space. |
216 |
||
217 |
needParen := false. |
|
218 |
self arg isMessage ifTrue:[ |
|
1388 | 219 |
self arg isUnaryMessage ifFalse:[ |
220 |
needParen := true |
|
221 |
]. |
|
0 | 222 |
]. |
223 |
needParen ifTrue:[ |
|
1388 | 224 |
aStream nextPutAll:'(' |
0 | 225 |
]. |
226 |
self arg printOn:aStream. |
|
227 |
needParen ifTrue:[ |
|
1388 | 228 |
aStream nextPutAll:') ' |
0 | 229 |
]. |
1388 | 230 |
! |
231 |
||
232 |
printSelectorOn:aStream |
|
233 |
selector printString printOn:aStream. |
|
0 | 234 |
! ! |
140 | 235 |
|
236 |
!BinaryNode methodsFor:'queries'! |
|
237 |
||
238 |
isBinaryMessage |
|
239 |
^ true |
|
240 |
! ! |
|
241 |
||
148 | 242 |
!BinaryNode class methodsFor:'documentation'! |
243 |
||
244 |
version |
|
1409 | 245 |
^ '$Header: /cvs/stx/stx/libcomp/BinaryNode.st,v 1.35 2003-05-06 14:03:55 cg Exp $' |
148 | 246 |
! ! |