author | Claus Gittinger <cg@exept.de> |
Fri, 12 Mar 2004 20:09:28 +0100 | |
changeset 8185 | e09efa26b6f8 |
parent 7744 | eeddeb7883af |
child 8306 | 5b610781e787 |
permissions | -rw-r--r-- |
1 | 1 |
" |
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COPYRIGHT (c) 1991 by Claus Gittinger |
154 | 3 |
All Rights Reserved |
1 | 4 |
|
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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:libbasic' }" |
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||
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nil subclass:#Autoload |
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instanceVariableNames:'' |
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classVariableNames:'LazyLoading AutoloadFailedSignal LoadedClasses' |
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poolDictionaries:'' |
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category:'Kernel-Classes' |
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! |
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||
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!Autoload class methodsFor:'documentation'! |
68 | 23 |
|
88 | 24 |
copyright |
25 |
" |
|
26 |
COPYRIGHT (c) 1991 by Claus Gittinger |
|
154 | 27 |
All Rights Reserved |
88 | 28 |
|
29 |
This software is furnished under a license and may be used |
|
30 |
only in accordance with the terms of that license and with the |
|
31 |
inclusion of the above copyright notice. This software may not |
|
32 |
be provided or otherwise made available to, or used by, any |
|
33 |
other person. No title to or ownership of the software is |
|
34 |
hereby transferred. |
|
35 |
" |
|
36 |
! |
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37 |
||
68 | 38 |
documentation |
39 |
" |
|
40 |
In memory limited systems (as my 8Mb 386 is) all seldom-used classes are made |
|
2662 | 41 |
subclasses of this class. |
42 |
Autoload catches all messages and files-In the corresponding code |
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43 |
when first used. |
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2689 | 44 |
Then the caught message is resent to the (now existing) class. |
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|
46 |
Class files are searched along the searchPath (see Smalltalk), |
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47 |
and any of binary-classFile, byteCode-classFile or sourceFile are |
|
48 |
loaded, whichever is found first. For binaries to be loaded, |
|
49 |
these must be found in the 'bin' directory. Sources must be found |
|
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in the 'source' directory. |
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51 |
(Usually, Autoload classes finds the source file and loads that one). |
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||
53 |
When started, the patches startup script arranges for the abbreviation |
|
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file 'include/abbrev.stc' to be read and installs autoload stubs for |
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all classes listed in that file, which do not exist already. |
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The abbreviation file is maintained by the production environment |
57 |
and updated by makefile rules - therefore, it should not be edited |
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58 |
manually. |
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68 | 59 |
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60 |
Late addition: above comment is no longer true - I have made now almost |
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all Demos & Goodies be autoloaded ... even for big systems. |
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62 |
||
1278 | 63 |
[class variables:] |
92 | 64 |
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LazyLoading <Boolean> if true, the loaded classes |
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methods will NOT be compiled at |
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67 |
autoload time, but instead when |
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68 |
first called. This allows for a |
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69 |
faster load. However, expect short |
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70 |
pauses later when the methods are |
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71 |
first executed. |
126 | 72 |
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AutoloadFailedSignal <Signal> signal raised if an autoloaded |
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classes source is not available. |
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76 |
LoadedClasses <Collection> set of classes that heve been |
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77 |
autoloaded (for later unload) |
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|
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[see also:] |
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80 |
Smalltalk |
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|
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[author:] |
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Claus Gittinger |
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" |
85 |
! ! |
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||
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!Autoload class methodsFor:'initialization'! |
126 | 88 |
|
89 |
initialize |
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"initialize the failure-signal" |
91 |
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AutoloadFailedSignal isNil ifTrue:[ |
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Convert Object>>errorSignal -> Error
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LazyLoading := false. |
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|
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Convert Object>>errorSignal -> Error
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AutoloadFailedSignal := Error newSignalMayProceed:true. |
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Convert Object>>errorSignal -> Error
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AutoloadFailedSignal nameClass:self message:#autoloadFailedSignal. |
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AutoloadFailedSignal notifierString:'autoload failed'. |
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self class changeClassTo:AutoloadMetaclass. |
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self setSuperclass:nil. |
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ObjectMemory flushCaches. |
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]. |
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self ~~ Autoload ifTrue:[ |
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^ self doesNotUnderstand:(Message selector:#initialize) |
5005 | 106 |
]. |
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"Modified: / 20.5.1997 / 19:06:25 / cg" |
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"Modified: / 3.8.1999 / 14:23:30 / stefan" |
126 | 110 |
! ! |
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!Autoload class methodsFor:'Signal constants'! |
126 | 113 |
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114 |
autoloadFailedSignal |
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115 |
"return the signal raised when an autoload fails" |
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116 |
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117 |
^ AutoloadFailedSignal |
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! ! |
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!Autoload class methodsFor:'adding/removing autoloaded classes'! |
359 | 121 |
|
216 | 122 |
addClass:aClassName |
4052 | 123 |
"given a name, install a corresponding autoload class stub for it. |
124 |
Return the (autoload-) stubClass or nil, if no new class was created." |
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^ self addClass:aClassName inCategory:'autoloaded-Classes' |
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128 |
" |
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Autoload addClass:'Clock' |
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" |
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"Modified: 24.4.1996 / 19:54:16 / cg" |
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! |
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135 |
addClass:aClassName inCategory:aCategory |
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"given a name, install a corresponding autoload class stub for it. |
137 |
Return the (autoload-) stubClass or nil, if no new class was created." |
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|nameSymbol cls| |
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|
141 |
nameSymbol := aClassName asSymbol. |
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(Smalltalk at:nameSymbol) isNil ifTrue:[ |
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5903 | 143 |
cls := Autoload |
144 |
subclass:nameSymbol |
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145 |
instanceVariableNames:'' |
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146 |
classVariableNames:'' |
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poolDictionaries:'' |
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category:aCategory. |
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]. |
150 |
^ cls |
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||
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" |
153 |
Autoload addClass:'Clock' inCategory:'autoloaded-Demos' |
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" |
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"Modified: 24.4.1996 / 19:54:20 / cg" |
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! |
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||
159 |
removeClass:aClass |
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"remove a class from the list of loaded classes" |
161 |
||
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LoadedClasses remove:aClass ifAbsent:[] |
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"Modified: 24.4.1996 / 19:54:35 / cg" |
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! ! |
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167 |
!Autoload class methodsFor:'fileout'! |
620 | 168 |
|
5345 | 169 |
basicFileOutDefinitionOn:aStream withNameSpace:forceNameSpace withPackage:withPackage |
620 | 170 |
"print an expression to define myself on aStream. |
171 |
Since autoloaded classes dont know their real definition, simply |
|
172 |
output some comment string making things clear in the browser." |
|
173 |
||
5820 | 174 |
|myName fileName nm package| |
620 | 175 |
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5345 | 176 |
(self == Autoload) ifTrue:[ |
7019 | 177 |
^ super |
178 |
basicFileOutDefinitionOn:aStream |
|
179 |
withNameSpace:forceNameSpace |
|
180 |
withPackage:withPackage |
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5345 | 181 |
]. |
620 | 182 |
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183 |
myName := self name. |
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184 |
aStream nextPutAll:'"' ; nextPutLine:'Notice from Autoload:'; cr; |
7019 | 185 |
spaces:4; nextPutLine:myName , ' is not yet loaded.'; cr. |
186 |
aStream nextPutLine:'to load, execute: '. |
|
187 |
aStream cr; spaces:4; nextPutLine:myName , ' autoload'. |
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aStream cr; nextPutLine:'or use the browsers load-function (in the class menu)'. |
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189 |
aStream nextPutLine:'(double-click on the class will also load it).'. |
620 | 190 |
" |
191 |
the following is simply informative ... |
|
192 |
actually, its a hack & kludge - there ought to be a method for this |
|
193 |
in Smalltalk |
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194 |
(knowing the details of loading here is no good coding style) |
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195 |
" |
|
196 |
fileName := Smalltalk fileNameForClass:myName. |
|
197 |
(ObjectFileLoader notNil and:[Smalltalk loadBinaries]) ifTrue:[ |
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(nm := Smalltalk libraryFileNameOfClass:myName) notNil ifTrue:[ |
199 |
nm := nm , ' (a classLibrary, possibly including more classes)' |
|
200 |
] ifFalse:[ |
|
201 |
nm := Smalltalk getBinaryFileName:(fileName , '.so'). |
|
202 |
nm isNil ifTrue:[ |
|
203 |
nm := Smalltalk getBinaryFileName:(fileName , '.o') |
|
204 |
]. |
|
205 |
nm notNil ifTrue:[ |
|
206 |
nm := nm , ' (a classBinary)' |
|
207 |
] |
|
208 |
]. |
|
620 | 209 |
]. |
210 |
nm isNil ifTrue:[ |
|
7019 | 211 |
package := self package. |
212 |
package notNil ifTrue:[ |
|
213 |
nm := Smalltalk getSourceFileName:((package copyReplaceAll:$: with:$/) , '/' , fileName , '.st'). |
|
214 |
]. |
|
215 |
nm isNil ifTrue:[ |
|
216 |
nm := Smalltalk getSourceFileName:(fileName , '.st'). |
|
217 |
]. |
|
620 | 218 |
]. |
219 |
nm notNil ifTrue:[ |
|
7744 | 220 |
aStream |
221 |
cr; |
|
222 |
nextPutLine:'When accessed, ' , myName , ' will automatically be loaded'; |
|
223 |
nextPutLine:'from: '; spaces:4; nextPutAll:nm. |
|
224 |
||
7019 | 225 |
nm asFilename isSymbolicLink ifTrue:[ |
226 |
aStream cr; cr. |
|
7744 | 227 |
aStream |
228 |
nextPutLine:'which is a link to: '; |
|
229 |
spaces:4; |
|
230 |
nextPutAll:(nm asFilename linkInfo path). |
|
7019 | 231 |
] |
620 | 232 |
] ifFalse:[ |
7019 | 233 |
package := self package. |
234 |
(Smalltalk at:#SourceCodeManager) notNil ifTrue:[ |
|
235 |
aStream nextPutAll:' |
|
5076 | 236 |
When accessed, I''ll ask the sourceCodeManager to load the code |
237 |
from ''' , fileName , '.st'' in the ''' , package , ''' package.'. |
|
7019 | 238 |
] ifFalse:[ |
239 |
aStream nextPutAll:' |
|
5076 | 240 |
When accessed, I''ll search for a file named |
241 |
''' , fileName , '.st'' in the ''' , package , ''' package. |
|
709
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more info for autoloaded classes (for browsers definition text)
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242 |
|
5076 | 243 |
Packages are tried along the packagePath, which is: |
244 |
' , ((Smalltalk packagePath asStringCollection collect:[:each| ' ' , each]) asStringWith:Character cr). |
|
7019 | 245 |
] |
620 | 246 |
]. |
247 |
aStream cr; nextPutAll:'"'. |
|
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more info for autoloaded classes (for browsers definition text)
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248 |
|
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249 |
"Created: / 5.1.1997 / 14:31:33 / cg" |
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250 |
"Modified: / 6.6.1999 / 15:17:30 / cg" |
620 | 251 |
! ! |
252 |
||
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253 |
!Autoload class methodsFor:'lazy compilation'! |
620 | 254 |
|
255 |
compileLazy |
|
256 |
"return the lazy loading flag - if on, fileIn is much faster, |
|
257 |
but pauses are to be expected later, since methods are compiled |
|
258 |
when first executed." |
|
259 |
||
260 |
^ LazyLoading |
|
261 |
! |
|
262 |
||
263 |
compileLazy:aBoolean |
|
264 |
"turn on/off lazy loading - if on, fileIn is much faster, |
|
265 |
but pauses are to be expected later, since methods are compiled |
|
266 |
when first executed. |
|
267 |
If you like it, add a line to your startup file." |
|
268 |
||
269 |
LazyLoading := aBoolean |
|
216 | 270 |
! ! |
271 |
||
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272 |
!Autoload class methodsFor:'loading'! |
1 | 273 |
|
274 |
autoload |
|
275 |
"use this to force loading |
|
2062 | 276 |
- it is defined a noop in all non-autoloading classes" |
1 | 277 |
|
4033 | 278 |
|mySelf myName myNameSpace newClass oldMeta project prevMode |
5820 | 279 |
package| |
1 | 280 |
|
281 |
mySelf := self. |
|
164 | 282 |
myName := self name asSymbol. |
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care for loaded classes namespace (vs. default namespace)
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283 |
myNameSpace := self nameSpace. |
1 | 284 |
|
4775 | 285 |
"/ recheck - in case my class somehow came into the system |
286 |
"/ (by loading a binary...) |
|
287 |
(newClass := Smalltalk at:myName) ~~ self ifTrue:[ |
|
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288 |
(newClass isBehavior and:[newClass isLoaded]) ifTrue:[ |
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|
289 |
('Autoload [info]: already loaded: ', myName , '.') infoPrintCR. |
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290 |
self class becomeSameAs:newClass class. |
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|
291 |
self becomeSameAs:newClass. |
4775 | 292 |
|
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293 |
ObjectMemory flushCaches. |
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294 |
^ newClass |
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295 |
]. |
4775 | 296 |
]. |
297 |
||
2 | 298 |
"load it" |
1566 | 299 |
(Object infoPrinting and:[Smalltalk silentLoading ~~ true]) ifTrue:[ |
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|
300 |
Transcript showCR:('autoloading ', myName , ' ...'); endEntry. |
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suppress load messages, if infoPrinting is turned off
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|
301 |
]. |
1 | 302 |
|
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use new becomeSameAs: to migrate to new class.
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303 |
[ |
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|
304 |
"remove myself - to avoid recompilation" |
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|
305 |
Smalltalk at:myName put:nil. |
5902 | 306 |
|
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|
307 |
prevMode := ClassCategoryReader sourceMode. |
1720 | 308 |
"/ |
309 |
"/ no- do not do this; it may lead to trouble ... |
|
310 |
"/ ClassCategoryReader sourceMode:#reference. |
|
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autoload classes keep source reference
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|
311 |
|
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312 |
"/ |
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|
313 |
"/ in order to not get a package of private (or whatever), |
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|
314 |
"/ temporarily set the currentProject to nil. |
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|
315 |
"/ we will later set the classes package to something useful |
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|
316 |
"/ |
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|
317 |
Project notNil ifTrue:[ |
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|
318 |
project := Project current. |
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|
319 |
Project setProject:nil. |
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320 |
]. |
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|
321 |
|
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|
322 |
package := self package. |
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|
323 |
Class nameSpaceQuerySignal answer:myNameSpace "Smalltalk" |
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|
324 |
do:[ |
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|
325 |
Class packageQuerySignal answer:package |
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|
326 |
do:[ |
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|
327 |
Class classConventionViolationConfirmationQuerySignal answer:true |
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|
328 |
do:[ |
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|
329 |
(Smalltalk |
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|
330 |
fileInClass:myName |
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|
331 |
package:package |
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|
332 |
initialize:false |
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333 |
lazy:LazyLoading |
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|
334 |
silent:nil) isNil |
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|
335 |
ifTrue:[ |
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|
336 |
"/ temporary: try without stx/package prefix |
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|
337 |
"/ this will vanish as soon as source-directory |
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|
338 |
"/ is always guaranteed to contain an stx-subtree |
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|
339 |
((package startsWith:'stx/') |
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|
340 |
or:[package startsWith:'stx:']) ifTrue:[ |
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|
341 |
package := package copyFrom:5. |
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|
342 |
Smalltalk |
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|
343 |
fileInClass:myName |
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|
344 |
package:package |
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|
345 |
initialize:false |
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|
346 |
lazy:LazyLoading |
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|
347 |
silent:nil. |
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|
348 |
] |
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|
349 |
] |
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|
350 |
] |
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|
351 |
] |
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|
352 |
]. |
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|
353 |
ClassCategoryReader sourceMode:prevMode. |
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|
354 |
project notNil ifTrue:[ |
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|
355 |
Project setProject:project. |
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|
356 |
]. |
6602
04a98cfacbe1
Use #ifCurtailed: instead of #valueOnUnwindDo:
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changeset
|
357 |
] ifCurtailed:[ |
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|
358 |
ClassCategoryReader sourceMode:prevMode. |
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|
359 |
project notNil ifTrue:[ |
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|
360 |
Project setProject:project. |
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|
361 |
]. |
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|
362 |
Smalltalk at:myName put:mySelf. |
860
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use new becomeSameAs: to migrate to new class.
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|
363 |
]. |
1 | 364 |
|
365 |
"did it work ?" |
|
164 | 366 |
newClass := Smalltalk at:myName. |
367 |
Smalltalk at:myName put:mySelf. "will be undone by become:" |
|
1 | 368 |
|
138 | 369 |
"no - report the error" |
1 | 370 |
newClass isNil ifTrue:[ |
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|
371 |
" |
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|
372 |
this signal is raised, if an autoloaded class |
57f3ae8d2a28
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|
373 |
cannot be loaded. Usually, this happends when |
57f3ae8d2a28
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|
374 |
some sourcefile is missing, not readable or if |
57f3ae8d2a28
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|
375 |
an entry is missing in the abbreviation file. |
57f3ae8d2a28
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|
376 |
Check for a readable file named <myName>.st |
57f3ae8d2a28
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|
377 |
in the 'source' directory and (if its a long fileName) |
57f3ae8d2a28
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|
378 |
for a corresponding entry in the abbreviation file |
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|
379 |
'include/abbrev.stc'. |
57f3ae8d2a28
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changeset
|
380 |
Finally, your searchpath could be set wrong - |
57f3ae8d2a28
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changeset
|
381 |
both 'source' and 'include' directories must be found in |
57f3ae8d2a28
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changeset
|
382 |
one of the directories named in systemPath. |
154 | 383 |
|
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changeset
|
384 |
In the debugger, press 'abort' to continue execution. |
57f3ae8d2a28
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changeset
|
385 |
" |
57f3ae8d2a28
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changeset
|
386 |
AutoloadFailedSignal |
57f3ae8d2a28
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changeset
|
387 |
raiseRequestWith:self |
57f3ae8d2a28
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changeset
|
388 |
errorString:('autoload of ' , myName , ' failed'). |
57f3ae8d2a28
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changeset
|
389 |
^ nil |
938
a23bc7f62ed1
set package info when autoloading
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diff
changeset
|
390 |
]. |
a23bc7f62ed1
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Claus Gittinger <cg@exept.de>
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diff
changeset
|
391 |
|
5463
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preserve the package when autoloading
Claus Gittinger <cg@exept.de>
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changeset
|
392 |
newClass setPackage:package. |
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changeset
|
393 |
newClass instAndClassSelectorsAndMethodsDo:[:sel :mthd | mthd setPackage:package]. |
5527
2817d7e173de
set project of all autoloaded methods
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changeset
|
394 |
|
938
a23bc7f62ed1
set package info when autoloading
Claus Gittinger <cg@exept.de>
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diff
changeset
|
395 |
"/ |
a23bc7f62ed1
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changeset
|
396 |
"/ autoloaded classes get their package from the revision (if present) |
a23bc7f62ed1
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changeset
|
397 |
"/ this only happens with autoloaded sourceFiles which have no package |
a23bc7f62ed1
set package info when autoloading
Claus Gittinger <cg@exept.de>
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922
diff
changeset
|
398 |
"/ info encoded. (binary classes have it) |
2057
35003ed4b817
care for the package ID when autoloading
Claus Gittinger <cg@exept.de>
parents:
2019
diff
changeset
|
399 |
"/ If there is no such information, give it my package (if I have one) |
938
a23bc7f62ed1
set package info when autoloading
Claus Gittinger <cg@exept.de>
parents:
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diff
changeset
|
400 |
"/ |
5463
18ec3ac68106
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Claus Gittinger <cg@exept.de>
parents:
5345
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changeset
|
401 |
"/ newClass setPackageFromRevision. |
18ec3ac68106
preserve the package when autoloading
Claus Gittinger <cg@exept.de>
parents:
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changeset
|
402 |
"/ |
18ec3ac68106
preserve the package when autoloading
Claus Gittinger <cg@exept.de>
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changeset
|
403 |
"/ newPackage := newClass package. |
18ec3ac68106
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Claus Gittinger <cg@exept.de>
parents:
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changeset
|
404 |
"/ (newPackage isNil or:[newPackage = 'no package']) ifTrue:[ |
18ec3ac68106
preserve the package when autoloading
Claus Gittinger <cg@exept.de>
parents:
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changeset
|
405 |
"/ (package notNil and:[package ~= 'no package']) ifTrue:[ |
18ec3ac68106
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Claus Gittinger <cg@exept.de>
parents:
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changeset
|
406 |
"/ newClass setPackage:package. |
18ec3ac68106
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Claus Gittinger <cg@exept.de>
parents:
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changeset
|
407 |
"/ ]. |
18ec3ac68106
preserve the package when autoloading
Claus Gittinger <cg@exept.de>
parents:
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changeset
|
408 |
"/ ]. |
1 | 409 |
|
216 | 410 |
LoadedClasses isNil ifTrue:[ |
6075
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parents:
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changeset
|
411 |
LoadedClasses := IdentitySet new. |
216 | 412 |
]. |
921
4db7603f9506
rename myself (just in case) & flush caches after loading
Claus Gittinger <cg@exept.de>
parents:
886
diff
changeset
|
413 |
LoadedClasses add:newClass. |
216 | 414 |
|
154 | 415 |
"wow - it worked. now the big trick ..." |
1 | 416 |
|
921
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rename myself (just in case) & flush caches after loading
Claus Gittinger <cg@exept.de>
parents:
886
diff
changeset
|
417 |
"/ newClass class setSoleInstance:self. "/ will be undone by become ... |
4db7603f9506
rename myself (just in case) & flush caches after loading
Claus Gittinger <cg@exept.de>
parents:
886
diff
changeset
|
418 |
oldMeta := self class. |
4db7603f9506
rename myself (just in case) & flush caches after loading
Claus Gittinger <cg@exept.de>
parents:
886
diff
changeset
|
419 |
|
3267
870789c08fad
do not change the autoloaded classes name to '... (auto)'
Claus Gittinger <cg@exept.de>
parents:
3151
diff
changeset
|
420 |
"/ self setName:(self name , ' (auto)'). |
7178 | 421 |
self dependents do:[:aDependent | |
422 |
newClass addDependent:aDependent |
|
423 |
]. |
|
424 |
Smalltalk changed:#aboutToAutloadClass with:(self -> newClass). |
|
860
b3ffea40999a
use new becomeSameAs: to migrate to new class.
Claus Gittinger <cg@exept.de>
parents:
789
diff
changeset
|
425 |
self becomeSameAs:newClass. |
921
4db7603f9506
rename myself (just in case) & flush caches after loading
Claus Gittinger <cg@exept.de>
parents:
886
diff
changeset
|
426 |
oldMeta becomeSameAs:newClass class. |
4db7603f9506
rename myself (just in case) & flush caches after loading
Claus Gittinger <cg@exept.de>
parents:
886
diff
changeset
|
427 |
|
4db7603f9506
rename myself (just in case) & flush caches after loading
Claus Gittinger <cg@exept.de>
parents:
886
diff
changeset
|
428 |
ObjectMemory flushCaches. |
216 | 429 |
LoadedClasses rehash. |
921
4db7603f9506
rename myself (just in case) & flush caches after loading
Claus Gittinger <cg@exept.de>
parents:
886
diff
changeset
|
430 |
|
3443
d57ea75d3ac5
oops - must send #initialize to all privateClasses.
Claus Gittinger <cg@exept.de>
parents:
3287
diff
changeset
|
431 |
newClass initializeWithAllPrivateClasses. |
886 | 432 |
newClass postAutoload. |
5705
543d3e8ef7c6
send a change notification when autoloading
Claus Gittinger <cg@exept.de>
parents:
5527
diff
changeset
|
433 |
|
543d3e8ef7c6
send a change notification when autoloading
Claus Gittinger <cg@exept.de>
parents:
5527
diff
changeset
|
434 |
Smalltalk changed:#classDefinition with:newClass. |
7178 | 435 |
self changed:#loaded. |
886 | 436 |
^ newClass |
938
a23bc7f62ed1
set package info when autoloading
Claus Gittinger <cg@exept.de>
parents:
922
diff
changeset
|
437 |
|
4025
d9b9a5e77f1a
when autoloading, allow for the stx-source subtree
Claus Gittinger <cg@exept.de>
parents:
4016
diff
changeset
|
438 |
"Modified: / 5.3.1999 / 12:59:13 / cg" |
1 | 439 |
! ! |
440 |
||
1862
e8f44f10f1ab
changes for new #infoOf: / #linkInfoOf: return
Claus Gittinger <cg@exept.de>
parents:
1720
diff
changeset
|
441 |
!Autoload class methodsFor:'message catching'! |
1 | 442 |
|
6251 | 443 |
at:arg |
444 |
"catch at: - redefined because its understood" |
|
445 |
||
446 |
^ self doesNotUnderstand:(Message selector:#at: with:arg) |
|
447 |
! |
|
448 |
||
620 | 449 |
basicNew |
1277 | 450 |
"catch basicNew - load the class and send it to the real one" |
620 | 451 |
|
452 |
^ self doesNotUnderstand:(Message selector:#basicNew) |
|
1277 | 453 |
|
454 |
"Modified: 24.4.1996 / 19:53:10 / cg" |
|
620 | 455 |
! |
456 |
||
457 |
basicNew:arg |
|
1277 | 458 |
"catch basicNew: - load the class and send it to the real one" |
620 | 459 |
|
460 |
^ self doesNotUnderstand:(Message selector:#basicNew: with:arg) |
|
1277 | 461 |
|
462 |
"Modified: 24.4.1996 / 19:53:16 / cg" |
|
620 | 463 |
! |
464 |
||
8185 | 465 |
classResources |
466 |
"catch classResources - load the class and resend #error to the real one" |
|
467 |
||
468 |
^ self doesNotUnderstand:(Message selector:#classResources) |
|
469 |
! |
|
470 |
||
620 | 471 |
comment |
472 |
"return the classes comment. |
|
473 |
Autoloaded classes have no comment; but I myself have one" |
|
474 |
||
475 |
(self == Autoload) ifTrue:[^ super comment]. |
|
476 |
^ 'not yet loaded' |
|
477 |
! |
|
478 |
||
6768 | 479 |
copy |
480 |
"catch copy - load the class and resend #copy to the real one" |
|
481 |
||
482 |
^ self doesNotUnderstand:(Message selector:#copy) |
|
483 |
! |
|
484 |
||
1 | 485 |
doesNotUnderstand:aMessage |
2689 | 486 |
"caught a message; load the class and retry the message" |
1 | 487 |
|
488 |
|newClass| |
|
489 |
||
164 | 490 |
self ~~ Autoload ifTrue:[ |
7178 | 491 |
newClass := self autoload. |
492 |
newClass notNil ifTrue:[ |
|
493 |
^ aMessage sendTo:newClass |
|
494 |
] |
|
1 | 495 |
]. |
789
155eca125ef0
return value from doesNotUnderstand (so handler can return a value)
Claus Gittinger <cg@exept.de>
parents:
739
diff
changeset
|
496 |
^ super doesNotUnderstand:aMessage |
1277 | 497 |
|
498 |
"Modified: 24.4.1996 / 19:53:27 / cg" |
|
1 | 499 |
! |
500 |
||
7574 | 501 |
error |
502 |
"catch error - load the class and resend #error to the real one" |
|
503 |
||
504 |
^ self doesNotUnderstand:(Message selector:#error) |
|
505 |
! |
|
506 |
||
4301
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
507 |
loadAndResendMessage |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
508 |
"common helper to autoload a class and define a subclass of it by sending |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
509 |
the sender-message again. |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
510 |
This is invoked by all #subClass... definition messages." |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
511 |
|
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
512 |
|sel args newClass| |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
513 |
|
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
514 |
sel := thisContext sender selector. |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
515 |
args := thisContext sender args. |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
516 |
|
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
517 |
"take care: subclassing Autoload must still be possible" |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
518 |
(self == Autoload) ifTrue:[ |
7178 | 519 |
^ self perform:sel inClass:Autoload class superclass withArguments:args |
4301
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
520 |
]. |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
521 |
|
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
522 |
newClass := self autoload. |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
523 |
newClass notNil ifTrue:[ |
7178 | 524 |
^ newClass perform:sel withArguments:args |
4301
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
525 |
]. |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
526 |
^ nil |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
527 |
|
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
528 |
"Created: 8.2.1997 / 19:42:47 / cg" |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
529 |
! |
e74e49f4e8e2
changed the way subclass-creation messages are handled
Claus Gittinger <cg@exept.de>
parents:
4280
diff
changeset
|
530 |
|
1 | 531 |
new |
2663 | 532 |
"catch new - load the class and resend #new to the real one" |
1 | 533 |
|
534 |
^ self doesNotUnderstand:(Message selector:#new) |
|
1277 | 535 |
|
2663 | 536 |
"Modified: 26.5.1997 / 14:59:52 / cg" |
1 | 537 |
! |
538 |
||
539 |
new:arg |
|
2663 | 540 |
"catch new: - load the class and resend #new: it to the real one" |
1 | 541 |
|
542 |
^ self doesNotUnderstand:(Message selector:#new: with:arg) |
|
1277 | 543 |
|
2663 | 544 |
"Modified: 26.5.1997 / 14:59:58 / cg" |
1 | 545 |
! |
546 |
||
1438
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
547 |
readFrom:aStream |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
548 |
"catch - load the class and send it to the real one" |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
549 |
|
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
550 |
^ self doesNotUnderstand:(Message selector:#readFrom: with:aStream) |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
551 |
|
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
552 |
"Created: 22.5.1996 / 23:44:23 / stefan" |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
553 |
! |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
554 |
|
1437 | 555 |
readFrom:aStream onError:exceptionBlock |
556 |
"catch - load the class and send it to the real one" |
|
557 |
||
558 |
^ self doesNotUnderstand:(Message selector:#readFrom:onError: with:aStream with:exceptionBlock) |
|
559 |
||
560 |
"Created: 22.5.1996 / 23:03:39 / stefan" |
|
561 |
! |
|
562 |
||
1438
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
563 |
readFromString:aString |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
564 |
"catch - load the class and send it to the real one" |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
565 |
|
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
566 |
^ self doesNotUnderstand:(Message selector:#readFromString: with:aString) |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
567 |
|
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
568 |
"Created: 22.5.1996 / 23:46:15 / stefan" |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
569 |
! |
76fdecf85f9e
Catch readFrom: and readFromString: too.
Stefan Vogel <sv@exept.de>
parents:
1437
diff
changeset
|
570 |
|
1437 | 571 |
readFromString:aString onError:exceptionBlock |
572 |
"catch - load the class and send it to the real one" |
|
573 |
||
574 |
^ self doesNotUnderstand:(Message selector:#readFromString:onError: with:aString with:exceptionBlock) |
|
575 |
||
576 |
"Created: 22.5.1996 / 23:04:49 / stefan" |
|
577 |
! |
|
578 |
||
2691
33221e233f79
when asked via #respondsTo:, load & resend
Claus Gittinger <cg@exept.de>
parents:
2689
diff
changeset
|
579 |
respondsTo:aSelector |
33221e233f79
when asked via #respondsTo:, load & resend
Claus Gittinger <cg@exept.de>
parents:
2689
diff
changeset
|
580 |
"catch respondsTo: - load the class and resend #respondsTo: it to the real one" |
33221e233f79
when asked via #respondsTo:, load & resend
Claus Gittinger <cg@exept.de>
parents:
2689
diff
changeset
|
581 |
|
33221e233f79
when asked via #respondsTo:, load & resend
Claus Gittinger <cg@exept.de>
parents:
2689
diff
changeset
|
582 |
self == Autoload ifTrue:[ |
7178 | 583 |
^ super respondsTo:aSelector |
2691
33221e233f79
when asked via #respondsTo:, load & resend
Claus Gittinger <cg@exept.de>
parents:
2689
diff
changeset
|
584 |
]. |
33221e233f79
when asked via #respondsTo:, load & resend
Claus Gittinger <cg@exept.de>
parents:
2689
diff
changeset
|
585 |
^ self doesNotUnderstand:(Message selector:#respondsTo: with:aSelector) |
33221e233f79
when asked via #respondsTo:, load & resend
Claus Gittinger <cg@exept.de>
parents:
2689
diff
changeset
|
586 |
|
33221e233f79
when asked via #respondsTo:, load & resend
Claus Gittinger <cg@exept.de>
parents:
2689
diff
changeset
|
587 |
"Modified: 26.5.1997 / 14:59:58 / cg" |
1 | 588 |
! ! |
11 | 589 |
|
1862
e8f44f10f1ab
changes for new #infoOf: / #linkInfoOf: return
Claus Gittinger <cg@exept.de>
parents:
1720
diff
changeset
|
590 |
!Autoload class methodsFor:'queries'! |
356 | 591 |
|
5902 | 592 |
accepts:aSignal |
593 |
"redefined to avoid recursive autoload" |
|
594 |
||
595 |
|newClass| |
|
596 |
||
597 |
self isBeingLoaded ifFalse:[ |
|
7178 | 598 |
newClass := self autoload. |
599 |
newClass notNil ifTrue:[ |
|
600 |
^ newClass accepts:aSignal |
|
601 |
]. |
|
5902 | 602 |
]. |
603 |
^ false |
|
604 |
! |
|
605 |
||
620 | 606 |
isBehavior |
607 |
"return true if the recevier is some kind of class. |
|
608 |
Autoloaded classes are definitely; therefore return true." |
|
164 | 609 |
|
620 | 610 |
^ true |
611 |
! |
|
356 | 612 |
|
5902 | 613 |
isBeingLoaded |
5903 | 614 |
^ (self ~~ Autoload) and:[(Smalltalk at:self name) isNil ] |
5902 | 615 |
|
616 |
"Modified: / 16.2.1998 / 11:57:35 / stefan" |
|
617 |
! |
|
618 |
||
729 | 619 |
isBuiltInClass |
1266 | 620 |
"return true if this class is known by the run-time-system. |
621 |
Returns false here." |
|
622 |
||
729 | 623 |
^ false |
624 |
||
625 |
"Created: 10.12.1995 / 00:28:22 / cg" |
|
1266 | 626 |
"Modified: 23.4.1996 / 15:55:36 / cg" |
729 | 627 |
! |
628 |
||
620 | 629 |
isLoaded |
3287 | 630 |
"return true, if the class has been loaded. |
631 |
Autoload itself is loaded, subclasses are not. |
|
632 |
This allows testing wether a class has already been loaded." |
|
620 | 633 |
|
634 |
^ (self == Autoload) |
|
3287 | 635 |
|
636 |
"Modified: / 16.2.1998 / 11:57:35 / stefan" |
|
620 | 637 |
! |
638 |
||
922 | 639 |
loadedClasses |
640 |
"return the set of classes that were autoloaded" |
|
641 |
||
4496 | 642 |
^ LoadedClasses ? #() |
922 | 643 |
! |
644 |
||
4401
d9667432d35b
privateClasses and allPrivateClasses
Claus Gittinger <cg@exept.de>
parents:
4301
diff
changeset
|
645 |
privateClassesOrAll:allOfThem |
4000 | 646 |
"an autoloaded class has none" |
647 |
||
648 |
^ #() |
|
649 |
! |
|
650 |
||
620 | 651 |
wasAutoloaded:aClass |
922 | 652 |
"return true, if aClass was autoloaded" |
653 |
||
620 | 654 |
^ LoadedClasses notNil and:[LoadedClasses includes:aClass] |
11 | 655 |
! ! |
620 | 656 |
|
1862
e8f44f10f1ab
changes for new #infoOf: / #linkInfoOf: return
Claus Gittinger <cg@exept.de>
parents:
1720
diff
changeset
|
657 |
!Autoload class methodsFor:'documentation'! |
661 | 658 |
|
659 |
version |
|
8185 | 660 |
^ '$Header: /cvs/stx/stx/libbasic/Autoload.st,v 1.121 2004-03-12 19:09:16 cg Exp $' |
661 | 661 |
! ! |
6768 | 662 |
|
620 | 663 |
Autoload initialize! |