author | Stefan Vogel <sv@exept.de> |
Mon, 02 Apr 2007 12:13:16 +0200 | |
changeset 2029 | ce692c34a270 |
parent 2000 | 5439196a4bb4 |
child 2078 | 310c2333bd76 |
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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"{ Package: 'stx:libcomp' }" |
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||
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Object subclass:#ParseNode |
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instanceVariableNames:'type comments parenthized' |
1046 | 16 |
classVariableNames:'' |
244
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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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!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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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 |
|
30 |
inclusion of the above copyright notice. This software may not |
|
31 |
be provided or otherwise made available to, or used by, any |
|
32 |
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; abstract class |
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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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!ParseNode class methodsFor:'instance creation'! |
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49 |
type:t |
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^ (self basicNew) type:t |
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! ! |
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!ParseNode class methodsFor:'code generation helpers'! |
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codeLineNumber:nr on:aStream for:aCompiler |
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"generate lineNumber information" |
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||
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"/ caveat: (currently) there is no separate lineNumber or symbol table; |
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"/ the line numbers are coded right into the instruction stream. |
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"/ This might change in the future. |
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"/ (It is not a problem speed wise: the Jitter just skips them.) |
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nr > 0 ifTrue:[ |
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nr <= 255 ifTrue:[ |
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aStream nextPut:#lineno. |
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aStream nextPut:nr |
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] ifFalse:[ |
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nr <= 16rFFFF ifTrue:[ |
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aStream nextPut:#lineno16. |
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aStream nextPut:((nr bitShift:-8) bitAnd:16rFF). |
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aStream nextPut:(nr bitAnd:16rFF). |
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] |
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] |
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] |
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"Created: 21.10.1996 / 14:42:27 / cg" |
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! ! |
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!ParseNode methodsFor:'accessing'! |
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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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||
1990
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parenthesized |
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^ parenthized ? false |
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! |
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90 |
|
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parenthesized:aBoolean |
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parenthized := aBoolean |
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! |
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140 | 95 |
parenthized |
1990
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|
96 |
"obsolete - typo in message name - use parenthesized" |
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^ parenthized ? false |
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! |
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parenthized:aBoolean |
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102 |
"obsolete - typo in message name - use parenthesized:" |
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parenthized := aBoolean |
105 |
! |
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||
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selectorPosition:aCharacterPosition |
108 |
"ignored here" |
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"Created: 5.8.1997 / 16:32:17 / cg" |
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! |
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||
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type |
114 |
"return the nodes type" |
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115 |
||
116 |
^ type |
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! ! |
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119 |
!ParseNode methodsFor:'checks'! |
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plausibilityCheck |
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^ nil |
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! ! |
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124 |
||
125 |
!ParseNode methodsFor:'code generation'! |
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127 |
codeForSideEffectOn:aStream inBlock:b for:aCompiler |
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"generate code for this statement - value not needed" |
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self codeOn:aStream inBlock:b for:aCompiler. |
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aStream nextPut:#drop |
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! |
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codeForSimpleReturnOn:aStream inBlock:b lineNumber:lineNrOrNil for:aCompiler |
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"generate code to return myself as a simple method return" |
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136 |
|
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self codeOn:aStream inBlock:b for:aCompiler. |
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lineNrOrNil notNil ifTrue:[ |
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self codeLineNumber:lineNrOrNil on:aStream for:aCompiler |
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]. |
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|
141 |
aStream nextPut:#retTop. |
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|
142 |
|
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|
143 |
|
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144 |
! |
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|
145 |
|
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codeInlineOn:aStream inBlock:b valueNeeded:valueNeeded for:aCompiler |
147 |
"generate code for this statement - value is needed" |
|
148 |
||
149 |
self codeOn:aStream inBlock:b for:aCompiler. |
|
150 |
! |
|
151 |
||
373 | 152 |
codeLineNumber:nr on:aStream for:aCompiler |
153 |
"generate lineNumber information" |
|
154 |
||
816 | 155 |
self class codeLineNumber:nr on:aStream for:aCompiler |
2029 | 156 |
! |
157 |
||
158 |
codeOn:aStream inBlock:codeBlock for:aCompiler |
|
159 |
^ self subclassResponsibility |
|
140 | 160 |
! ! |
161 |
||
1804
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162 |
!ParseNode methodsFor:'code generation helpers'! |
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|
163 |
|
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|
164 |
emitPushGlobalWithLiteralIndex:litIndex on:aTokenCodeStream for:aCompiler |
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165 |
litIndex <= 255 ifTrue:[ |
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|
166 |
aTokenCodeStream nextPut:#pushGlobalS; nextPut:litIndex |
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|
167 |
] ifFalse:[ |
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|
168 |
litIndex <= 16rFFFF ifTrue:[ |
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|
169 |
aTokenCodeStream nextPut:#pushGlobalL; nextPut:litIndex; nextPut:0 |
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|
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] ifFalse:[ |
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171 |
aTokenCodeStream nextPut:#pushGlobalVL; nextPut:0; nextPut:litIndex; nextPut:0; nextPut:0; nextPut:0 |
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172 |
]. |
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173 |
]. |
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|
174 |
! |
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|
175 |
|
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|
176 |
emitPushLiteral:value on:aTokenCodeStream for:aCompiler |
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|
177 |
|index| |
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|
178 |
|
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|
179 |
index := aCompiler addLiteral:value. |
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|
180 |
self emitPushLiteralIndex:index on:aTokenCodeStream for:aCompiler |
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181 |
! |
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|
182 |
|
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|
183 |
emitPushLiteralIndex:index on:aTokenCodeStream for:aCompiler |
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|
184 |
index <= 8 ifTrue:[ |
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|
185 |
aTokenCodeStream |
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|
186 |
nextPut:(#(pushLit1 pushLit2 pushLit3 pushLit4 |
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|
187 |
pushLit5 pushLit6 pushLit7 pushLit8) at:index). |
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|
188 |
] ifFalse:[ |
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|
189 |
index <= 255 ifTrue:[ |
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|
190 |
aTokenCodeStream nextPut:#pushLitS; nextPut:index |
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|
191 |
] ifFalse:[ |
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|
192 |
index <= 16rFFFF ifTrue:[ |
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|
193 |
aTokenCodeStream nextPut:#pushLitL; nextPut:index; nextPut:0 |
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|
194 |
] ifFalse:[ |
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|
195 |
aTokenCodeStream nextPut:#pushLitVL; nextPut:0; nextPut:index; nextPut:0; nextPut:0; nextPut:0 |
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|
196 |
] |
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|
197 |
]. |
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|
198 |
]. |
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|
199 |
! |
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|
200 |
|
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|
201 |
emitSendLiteralIndex:litIndex numArgs:nargs line:lineNr on:aStream |
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|
202 |
(litIndex <= 255) ifTrue:[ |
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|
203 |
nargs <= 3 ifTrue:[ |
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|
204 |
aStream |
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|
205 |
nextPut:(#(send0 send1 send2 send3) at:(nargs+1)); nextPut:lineNr; |
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|
206 |
nextPut:litIndex. |
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|
207 |
^ self. |
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|
208 |
]. |
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|
209 |
aStream |
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|
210 |
nextPut:#send; nextPut:lineNr; |
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|
211 |
nextPut:litIndex; |
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|
212 |
nextPut:nargs. |
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|
213 |
^ self. |
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|
214 |
]. |
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|
215 |
|
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|
216 |
(litIndex <= 16rFFFF) ifTrue:[ |
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|
217 |
aStream |
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|
218 |
nextPut:#sendL; nextPut:lineNr; |
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|
219 |
nextPut:litIndex; nextPut:0; |
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|
220 |
nextPut:nargs. |
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|
221 |
^ self. |
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|
222 |
]. |
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|
223 |
|
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|
224 |
aStream |
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|
225 |
nextPut:#sendVL; nextPut:0; nextPut:lineNr; |
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|
226 |
nextPut:litIndex; nextPut:0; nextPut:0; nextPut:0; |
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|
227 |
nextPut:nargs. |
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|
228 |
! |
7c22dbaa8d10
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|
229 |
|
7c22dbaa8d10
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|
230 |
emitStoreGlobalWithLiteralIndex:litIndex on:aTokenCodeStream for:aCompiler |
7c22dbaa8d10
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changeset
|
231 |
litIndex <= 255 ifTrue:[ |
7c22dbaa8d10
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|
232 |
aTokenCodeStream nextPut:#storeGlobalS; nextPut:litIndex |
7c22dbaa8d10
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|
233 |
] ifFalse:[ |
7c22dbaa8d10
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|
234 |
litIndex <= 16rFFFF ifTrue:[ |
7c22dbaa8d10
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|
235 |
aTokenCodeStream nextPut:#storeGlobalL; nextPut:litIndex; nextPut:0 |
7c22dbaa8d10
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|
236 |
] ifFalse:[ |
7c22dbaa8d10
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|
237 |
aTokenCodeStream nextPut:#storeGlobalVL; nextPut:0; nextPut:litIndex; nextPut:0; nextPut:0; nextPut:0; nextPut:0 |
7c22dbaa8d10
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|
238 |
]. |
7c22dbaa8d10
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parents:
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diff
changeset
|
239 |
]. |
7c22dbaa8d10
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diff
changeset
|
240 |
! |
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diff
changeset
|
241 |
|
7c22dbaa8d10
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diff
changeset
|
242 |
emitSuperSendLiteralIndex:litIndex classLiteralIndex:clsLitIndex numArgs:nargs line:lineNr on:aStream |
7c22dbaa8d10
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Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
243 |
(litIndex <= 255 and:[clsLitIndex <= 255]) ifTrue:[ |
7c22dbaa8d10
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|
244 |
aStream |
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changeset
|
245 |
nextPut:#superSend; nextPut:lineNr; |
7c22dbaa8d10
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|
246 |
nextPut:litIndex; |
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|
247 |
nextPut:nargs; |
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|
248 |
nextPut:clsLitIndex. |
7c22dbaa8d10
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Claus Gittinger <cg@exept.de>
parents:
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changeset
|
249 |
] ifFalse:[ |
7c22dbaa8d10
some code savers for common code-emit
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
250 |
(litIndex <= 16rFFFF and:[clsLitIndex <= 16rFFFF]) ifTrue:[ |
7c22dbaa8d10
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diff
changeset
|
251 |
aStream |
7c22dbaa8d10
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diff
changeset
|
252 |
nextPut:#superSendL; nextPut:lineNr; |
7c22dbaa8d10
some code savers for common code-emit
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parents:
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diff
changeset
|
253 |
nextPut:litIndex; nextPut:0; |
7c22dbaa8d10
some code savers for common code-emit
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parents:
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diff
changeset
|
254 |
nextPut:nargs; |
7c22dbaa8d10
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parents:
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diff
changeset
|
255 |
nextPut:clsLitIndex; nextPut:0. |
7c22dbaa8d10
some code savers for common code-emit
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
256 |
] ifFalse:[ |
7c22dbaa8d10
some code savers for common code-emit
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diff
changeset
|
257 |
aStream |
7c22dbaa8d10
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parents:
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diff
changeset
|
258 |
nextPut:#superSendVL; nextPut:0; nextPut:lineNr; |
7c22dbaa8d10
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parents:
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diff
changeset
|
259 |
nextPut:litIndex; nextPut:0; nextPut:0; nextPut:0; |
7c22dbaa8d10
some code savers for common code-emit
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
260 |
nextPut:nargs; |
7c22dbaa8d10
some code savers for common code-emit
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parents:
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diff
changeset
|
261 |
nextPut:clsLitIndex; nextPut:0; nextPut:0; nextPut:0. |
7c22dbaa8d10
some code savers for common code-emit
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
262 |
]. |
7c22dbaa8d10
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Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
263 |
]. |
7c22dbaa8d10
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parents:
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diff
changeset
|
264 |
! ! |
7c22dbaa8d10
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parents:
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diff
changeset
|
265 |
|
1503 | 266 |
!ParseNode methodsFor:'enumeration'! |
267 |
||
268 |
messagesDo:aBlock |
|
269 |
^ self |
|
270 |
! ! |
|
271 |
||
140 | 272 |
!ParseNode methodsFor:'evaluation'! |
273 |
||
1383 | 274 |
evaluate |
275 |
^ self evaluateIn:nil |
|
276 |
! |
|
277 |
||
140 | 278 |
evaluateForCascade |
1383 | 279 |
^ self evaluateForCascadeIn:nil |
280 |
! |
|
281 |
||
282 |
evaluateForCascadeIn:anEnvironment |
|
283 |
^ self evaluateIn:anEnvironment |
|
284 |
! |
|
285 |
||
286 |
evaluateIn:anEnvironment |
|
287 |
self subclassResponsibility |
|
140 | 288 |
! ! |
289 |
||
1080 | 290 |
!ParseNode methodsFor:'printing & storing'! |
140 | 291 |
|
292 |
printOn:aStream |
|
914 | 293 |
"append a user printed representation of the receiver to aStream. |
294 |
The format is suitable for a human - not meant to be read back." |
|
295 |
||
140 | 296 |
self printOn:aStream indent:0 |
297 |
! |
|
298 |
||
1588 | 299 |
printOn:aStream indent:indent |
300 |
"append a user printed representation of the receiver to aStream. |
|
301 |
The format is suitable for a human - not meant to be read back." |
|
302 |
||
303 |
self subclassResponsibility |
|
304 |
||
305 |
"Created: / 20-04-2005 / 14:21:46 / cg" |
|
306 |
! |
|
307 |
||
308 |
printOn:aStream indent:indent parenthized:parenthized |
|
309 |
parenthized ifTrue:[ |
|
310 |
aStream nextPutAll:'(' |
|
311 |
]. |
|
312 |
self printOn:aStream indent:indent. |
|
313 |
parenthized ifTrue:[ |
|
314 |
aStream nextPutAll:')' |
|
315 |
]. |
|
316 |
||
317 |
"Created: / 20-04-2005 / 14:21:28 / cg" |
|
318 |
! |
|
319 |
||
140 | 320 |
printString |
321 |
|stream| |
|
322 |
||
323 |
stream := WriteStream on:String new. |
|
324 |
self printOn:stream indent:0. |
|
325 |
^ stream contents |
|
326 |
! ! |
|
327 |
||
328 |
!ParseNode methodsFor:'private'! |
|
329 |
||
330 |
type:t |
|
331 |
"set the nodes type" |
|
332 |
||
333 |
type := t |
|
334 |
! ! |
|
335 |
||
0 | 336 |
!ParseNode methodsFor:'queries'! |
337 |
||
244
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
338 |
canReuseAsArg:anotherNode |
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
339 |
^ false |
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
340 |
|
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
341 |
"Created: 14.4.1996 / 00:43:08 / cg" |
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
342 |
! |
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
343 |
|
395 | 344 |
collectBlocksInto:aCollection |
345 |
^ self |
|
346 |
||
347 |
"Created: 23.10.1996 / 15:45:00 / cg" |
|
348 |
! |
|
349 |
||
140 | 350 |
isAssignment |
351 |
"return true, if this is a node for an assignment" |
|
352 |
||
353 |
^ false |
|
354 |
! |
|
355 |
||
356 |
isBinaryMessage |
|
357 |
"return true, if this is a node for a binary send" |
|
358 |
||
359 |
^ false |
|
360 |
! |
|
361 |
||
362 |
isBlockNode |
|
363 |
"return true, if this is a node for a block" |
|
364 |
||
365 |
^ false |
|
366 |
! |
|
367 |
||
744
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
368 |
isCascade |
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
369 |
^ false |
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
370 |
|
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
371 |
"Created: / 16.7.1998 / 20:11:33 / cg" |
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
372 |
! |
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
373 |
|
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
374 |
isCascadeToSuper |
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
375 |
^ false |
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
376 |
|
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
377 |
"Created: / 16.7.1998 / 19:51:07 / cg" |
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
378 |
! |
e871f9f072f8
changes for cascades to super/here semantics.
Claus Gittinger <cg@exept.de>
parents:
598
diff
changeset
|
379 |
|
0 | 380 |
isConstant |
13 | 381 |
"return true, if this is a node for a constant" |
382 |
||
383 |
^ false |
|
384 |
! |
|
385 |
||
1533 | 386 |
isErrorNode |
387 |
^ false |
|
388 |
! |
|
389 |
||
53 | 390 |
isGlobal |
391 |
"return true, if this is a node for a global variable" |
|
392 |
||
393 |
^ false |
|
394 |
! |
|
395 |
||
2000 | 396 |
isGlobalNamed:globalName |
397 |
"return true, if this is a node for a particular global variable" |
|
398 |
||
399 |
^ false |
|
400 |
||
401 |
"Created: / 05-03-2007 / 15:13:23 / cg" |
|
402 |
! |
|
403 |
||
1310
feb30ab0c221
better variabletype queries.
Claus Gittinger <cg@exept.de>
parents:
1114
diff
changeset
|
404 |
isGlobalVariable |
feb30ab0c221
better variabletype queries.
Claus Gittinger <cg@exept.de>
parents:
1114
diff
changeset
|
405 |
^ false |
feb30ab0c221
better variabletype queries.
Claus Gittinger <cg@exept.de>
parents:
1114
diff
changeset
|
406 |
! |
feb30ab0c221
better variabletype queries.
Claus Gittinger <cg@exept.de>
parents:
1114
diff
changeset
|
407 |
|
1528 | 408 |
isImmutable |
409 |
"not used with ST/X - |
|
410 |
for JavaScript nodes return true here." |
|
411 |
||
412 |
^ true |
|
413 |
! |
|
414 |
||
1725 | 415 |
isInnerJavaScriptBlock |
416 |
^ false |
|
417 |
! |
|
418 |
||
140 | 419 |
isMessage |
420 |
"return true, if this is a node for a message expression" |
|
19 | 421 |
|
422 |
^ false |
|
423 |
! |
|
424 |
||
1310
feb30ab0c221
better variabletype queries.
Claus Gittinger <cg@exept.de>
parents:
1114
diff
changeset
|
425 |
isMethodVariable |
feb30ab0c221
better variabletype queries.
Claus Gittinger <cg@exept.de>
parents:
1114
diff
changeset
|
426 |
^ false |
feb30ab0c221
better variabletype queries.
Claus Gittinger <cg@exept.de>
parents:
1114
diff
changeset
|
427 |
! |
feb30ab0c221
better variabletype queries.
Claus Gittinger <cg@exept.de>
parents:
1114
diff
changeset
|
428 |
|
140 | 429 |
isPrimary |
430 |
"return true, if this is a node for a primary (i.e. non-send)" |
|
13 | 431 |
|
432 |
^ false |
|
433 |
! |
|
434 |
||
435 |
isReturnNode |
|
436 |
"return true, if this is a node for a return expression" |
|
437 |
||
0 | 438 |
^ false |
439 |
! |
|
440 |
||
862 | 441 |
isSelf |
442 |
"return true, if this is a self-node" |
|
443 |
||
444 |
^ false |
|
445 |
! |
|
446 |
||
140 | 447 |
isSuper |
448 |
"return true, if this is a super-node" |
|
13 | 449 |
|
0 | 450 |
^ false |
451 |
! |
|
452 |
||
453 |
isUnaryMessage |
|
13 | 454 |
"return true, if this is a node for a unary send" |
455 |
||
0 | 456 |
^ false |
244
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
457 |
! |
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
458 |
|
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
459 |
isVariable |
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
460 |
"return true, if this is a node for a variable" |
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
461 |
|
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
462 |
^ false |
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
463 |
|
2ce60e837d52
use dup if possible when pushing args
Claus Gittinger <cg@exept.de>
parents:
148
diff
changeset
|
464 |
"Created: 14.4.1996 / 00:46:44 / cg" |
1588 | 465 |
! |
466 |
||
467 |
precedence |
|
468 |
^ 9999 |
|
0 | 469 |
! ! |
470 |
||
148 | 471 |
!ParseNode class methodsFor:'documentation'! |
472 |
||
473 |
version |
|
2029 | 474 |
^ '$Header: /cvs/stx/stx/libcomp/ParseNode.st,v 1.45 2007-04-02 10:13:16 stefan Exp $' |
148 | 475 |
! ! |