author | Stefan Vogel <sv@exept.de> |
Fri, 11 Oct 2013 19:27:45 +0200 | |
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parent 2678 | c865275e48a7 |
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" |
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COPYRIGHT (c) 1996-2011 by Claus Gittinger |
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New code and modifications done at SWING Research Group [1]: |
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COPYRIGHT (c) 2010-2011 by Jan Vrany, Jan Kurs and Marcel Hlopko |
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SWING Research Group, Czech Technical University in Prague |
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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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[1] Code written at SWING Research Group contains a signature |
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of one of the above copright owners. For exact set of such code, |
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see the differences between this version and version stx:libjava |
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as of 1.9.2010 |
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" |
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"{ Package: 'stx:libjava' }" |
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Object subclass:#JavaResolver |
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instanceVariableNames:'exceptionThrower' |
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classVariableNames:'uniqueInstance' |
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poolDictionaries:'' |
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category:'Languages-Java-Reader-Support-new' |
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! |
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!JavaResolver class methodsFor:'documentation'! |
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copyright |
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" |
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COPYRIGHT (c) 1996-2011 by Claus Gittinger |
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New code and modifications done at SWING Research Group [1]: |
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COPYRIGHT (c) 2010-2011 by Jan Vrany, Jan Kurs and Marcel Hlopko |
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SWING Research Group, Czech Technical University in Prague |
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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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[1] Code written at SWING Research Group contains a signature |
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of one of the above copright owners. For exact set of such code, |
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see the differences between this version and version stx:libjava |
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as of 1.9.2010 |
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" |
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! ! |
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!JavaResolver class methodsFor:'initialization'! |
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initialize |
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uniqueInstance := JavaResolver new. |
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uniqueInstance exceptionThrower: JavaVM. |
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"/has methods at: and at: put: |
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"/uniqueInstance resolvedClasses: Java. |
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"Modified: / 10-04-2011 / 10:23:43 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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"Modified: / 13-04-2011 / 14:07:35 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
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! ! |
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!JavaResolver class methodsFor:'instance creation'! |
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uniqueInstance |
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^uniqueInstance. |
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"Created: / 08-04-2011 / 17:36:37 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
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"Modified: / 11-04-2011 / 19:06:49 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
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! ! |
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!JavaResolver methodsFor:'accessing'! |
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exceptionThrower |
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^ exceptionThrower |
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exceptionThrower:something |
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exceptionThrower := something. |
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! ! |
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!JavaResolver methodsFor:'class resolving'! |
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checkIfPrimitiveArrayRef: aJavaClassRef andWrap: result |
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^ (JavaDescriptor readFromString: aJavaClassRef name) javaClass. |
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"Created: / 23-05-2011 / 21:12:04 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
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resolveClassIndentifiedByRef: aJavaClassRef init: doInit |
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"marcel is back working harder then ever :)" |
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| result | |
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self validateClassRef: aJavaClassRef. |
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result := self |
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lookupClassIfAlreadyResolved: aJavaClassRef javaClassName |
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definedBy: aJavaClassRef classLoader. |
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"/ result notNil ifTrue:[ |
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"/ "/wrap result with array(s) if needed and return it |
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"/ "/FIXME: Marcel, can you have a look? Is that correct? |
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"/ ^self checkIfArrayRef: aJavaClassRef andWrap: result. |
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"/ ]. |
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" |
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To resolve an unresolved symbolic reference from D to a class or interface C denoted by N, |
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the following steps are performed: |
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The defining class loader of D is used to create a class or interface denoted by N. |
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This class or interface is C. Any exception that can be thrown as a result of failure |
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of class or interface creation can thus be thrown as a result of failure of class and |
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interface resolution. The details of the process are given in Section 5.3. |
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" |
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result isNil ifTrue: [ |
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JavaClassReader classLoaderQuerySignal answer: (aJavaClassRef classLoader) |
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do: [ |
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"#loadUnresolvedClass: wraps the class!!!!!!" |
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result := self loadUnresolvedClass: aJavaClassRef. |
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((aJavaClassRef name first == $[) and: [ result isJavaArrayClass not ]) ifTrue: [ |
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self breakPoint: #jv. |
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] |
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]. |
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] ifFalse: [ result := self checkIfArrayRef: aJavaClassRef andWrap: result. ]. |
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result isNil ifTrue: [ self breakPoint: #mh ]. |
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result isJavaPrimitiveType ifTrue: [ |
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^ self checkIfPrimitiveArrayRef: aJavaClassRef andWrap: result |
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]. |
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(doInit and: [ result isJavaClass and: [ result isJavaArrayClass not ] ]) ifTrue: [ |
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result classInit |
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]. |
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" |
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If C is an array class and its element type is a reference type, then the symbolic reference |
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to the class or interface representing the element type is resolved by invoking the algorithm |
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in Section 5.4.3.1 recursively.""Finally, access permissions to C are checked: |
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If C is not accessible (5.4.4) to D, class or interface resolution throws an IllegalAccessError. |
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This condition can occur, for example, if C is a class that was originally declared to be |
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public but was changed to be non-public after D was compiled. |
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If steps 1 and 2 succeed but step 3 fails, C is still valid and usable. Nevertheless, resolution |
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fails, and D is prohibited from accessing C." |
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(self checkPermissionsFrom: aJavaClassRef owner to: result) ifFalse: [ |
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self throwIllegalAccessError. |
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^nil. |
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]. |
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^result |
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"Created: / 11-04-2011 / 19:07:19 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
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"Created: / 12-08-2011 / 22:19:51 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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"Modified (comment): / 03-10-2011 / 23:03:01 / m" |
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"Modified: / 01-12-2012 / 13:44:54 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
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"Modified: / 02-05-2013 / 01:21:39 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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! ! |
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!JavaResolver methodsFor:'class resolving helpers'! |
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checkIfArrayRef: aJavaClassRef andWrap: nonArrayClass |
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"/wrap result with array(s) if needed and return it |
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| class| |
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class := nonArrayClass. |
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aJavaClassRef name do:[:c| |
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c ~~ $[ ifTrue:[ ^ class ]. |
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class := class javaArrayClass. |
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]. |
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^class |
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"Modified: / 11-04-2011 / 19:31:43 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
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"Modified: / 23-10-2011 / 23:46:41 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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! |
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checkPermissionsFrom: refOwner to: resolvedClass |
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refOwner hasMagicAccessRights ifTrue: [ ^ true ]. |
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(JavaDescriptor isJavaPrimitiveArrayName: resolvedClass javaName) ifTrue: [ |
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^ true |
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]. |
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resolvedClass isPublic ifTrue: [ ^ true ]. |
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resolvedClass classLoader = refOwner classLoader ifFalse: [ ^ false. ]. |
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refOwner javaPackage = resolvedClass javaPackage ifTrue: [ ^ true ]. |
749 | 185 |
|
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"/a little bit too verbose here just so it's clear what's in query |
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187 |
|
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188 |
JavaVM privilegedAccessQuery query ifTrue: [ ^ true ] ifFalse: [ ^ false ]. |
749 | 189 |
|
190 |
"Created: / 11-04-2011 / 19:35:21 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
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"Modified (comment): / 09-10-2011 / 23:11:54 / Marcel Hlopko <hlopik@gmail.com>" |
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"Modified: / 23-08-2012 / 20:21:40 / m" |
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"Modified: / 30-11-2012 / 20:34:26 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 194 |
! |
195 |
||
196 |
loadUnresolvedClass: aJavaClassRef |
|
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| nm cls i | |
749 | 198 |
|
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nm := aJavaClassRef name. |
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nm size == 1 ifTrue:[ |
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201 |
JavaDescriptor baseTypes at: nm first ifPresent: [:cls | ^ cls ] |
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202 |
]. |
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203 |
"Note, that JavaVM>>classForName: itself deals with class loaders. |
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The caller of me should set one using code like: |
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205 |
|
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JavaClassReader classLoaderQuerySignal answer: loader do:[call me] |
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207 |
" |
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cls := JavaVM classForName: nm. |
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209 |
(nm startsWith:$[) ifTrue:[ |
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i := 1. |
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211 |
[ (nm at:i) == $[ ] whileTrue:[ |
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212 |
cls := cls javaArrayClass. |
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213 |
i := i + 1. |
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214 |
]. |
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215 |
self assert: (nm at:i) == $L. |
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216 |
]. |
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217 |
|
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218 |
^cls. |
749 | 219 |
|
220 |
"Created: / 11-04-2011 / 19:27:10 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
221 |
"Modified: / 23-05-2011 / 21:06:25 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
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222 |
"Modified: / 29-02-2012 / 09:20:23 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
749 | 223 |
! |
224 |
||
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225 |
lookupClassIfAlreadyResolved: javaClassName definedBy: classLoader |
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^ JavaVM classNamed: javaClassName definedBy: classLoader |
749 | 227 |
|
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"Created: / 02-05-2013 / 01:20:39 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
749 | 229 |
! |
230 |
||
231 |
validateClassRef: aJavaClassRef |
|
232 |
self assert: aJavaClassRef isJavaRef. |
|
233 |
self assert: aJavaClassRef isJavaClassRef . |
|
234 |
||
235 |
"Modified: / 23-05-2011 / 21:04:00 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
236 |
! ! |
|
237 |
||
238 |
!JavaResolver methodsFor:'common helpers'! |
|
239 |
||
240 |
checkPermissionsForMethodOrField: aJavaMethodOrField from: accessingJavaClass to: resolvedJavaClass |
|
241 |
"A class or interface C is accessible to a class or interface D if |
|
242 |
and only if either of the following conditions are true: |
|
243 |
C is public. |
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C and D are members of the same runtime package (§5.3). |
749 | 245 |
A field or method R is accessible to a class or interface D if and only |
246 |
if any of the following conditions is true: |
|
247 |
R is public. |
|
248 |
R is protected and is declared in a class C, and D is either a subclass |
|
249 |
of C or C itself. |
|
250 |
R is either protected or package private (that is, neither public nor |
|
251 |
protected nor private), and is declared by a class in the same runtime |
|
252 |
package as D. |
|
253 |
R is private and is declared in D. |
|
254 |
This discussion of access control omits a related restriction on the target |
|
255 |
of a protected field access or method invocation (the target must be of class |
|
256 |
D or a subtype of D). That requirement is checked as part of the verification |
|
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process (§5.4.1); it is not part of link-time access control." |
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258 |
|
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259 |
accessingJavaClass hasMagicAccessRights ifTrue: [ ^true ]. |
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260 |
|
749 | 261 |
(self checkPermissionsFrom: accessingJavaClass to: resolvedJavaClass) ifFalse: [ |
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262 |
JavaVM privilegedAccessQuery query ifTrue: [ ^ true ]. |
749 | 263 |
^ false |
264 |
]. |
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265 |
aJavaMethodOrField isPublic ifTrue: [ ^ true ]. |
749 | 266 |
((aJavaMethodOrField isProtected |
267 |
and: [ |
|
268 |
resolvedJavaClass javaComponentClass |
|
269 |
equalsOrIsSubclassOf: aJavaMethodOrField javaClass |
|
270 |
]) |
|
271 |
and: [ |
|
272 |
accessingJavaClass javaComponentClass |
|
273 |
equalsOrIsSubclassOf: aJavaMethodOrField javaClass |
|
274 |
]) |
|
275 |
ifTrue: [ ^ true ]. |
|
276 |
((aJavaMethodOrField isPrivate not |
|
277 |
and: [ resolvedJavaClass javaPackage = accessingJavaClass javaPackage ]) |
|
278 |
and: [ resolvedJavaClass classLoader = accessingJavaClass classLoader ]) |
|
279 |
ifTrue: [ ^ true ]. |
|
280 |
(aJavaMethodOrField isPrivate |
|
281 |
and: [ aJavaMethodOrField javaClass name = accessingJavaClass name ]) |
|
282 |
ifTrue: [ ^ true ]. |
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283 |
|
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284 |
"/a little bit too verbose here just so it's clear what's in query |
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285 |
|
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286 |
JavaVM privilegedAccessQuery query ifTrue: [ ^ true ] ifFalse: [ ^ false ]. |
749 | 287 |
|
288 |
"Created: / 14-04-2011 / 14:19:33 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
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"Modified (comment): / 09-10-2011 / 23:12:48 / Marcel Hlopko <hlopik@gmail.com>" |
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290 |
"Modified: / 18-11-2012 / 16:24:29 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 291 |
! ! |
292 |
||
293 |
!JavaResolver methodsFor:'exceptions'! |
|
294 |
||
295 |
throwAbstractMethodError |
|
296 |
exceptionThrower throwAbstractMethodError. |
|
297 |
||
298 |
"Created: / 11-04-2011 / 20:19:42 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
299 |
"Modified: / 13-04-2011 / 14:07:46 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
300 |
! |
|
301 |
||
302 |
throwIllegalAccessError |
|
303 |
exceptionThrower throwIllegalAccessError. |
|
304 |
||
305 |
"Created: / 11-04-2011 / 19:39:16 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
306 |
"Modified: / 13-04-2011 / 23:06:58 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
307 |
! |
|
308 |
||
309 |
throwIncompatibleClassChangeError |
|
310 |
exceptionThrower throwIncompatibleClassChangeError. |
|
311 |
||
312 |
"Created: / 11-04-2011 / 20:02:01 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
313 |
"Modified: / 13-04-2011 / 14:07:54 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
314 |
! |
|
315 |
||
316 |
throwNoSuchFieldException |
|
317 |
exceptionThrower throwNoSuchFieldException. |
|
318 |
||
319 |
"Created: / 11-04-2011 / 21:35:02 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
320 |
"Modified: / 13-04-2011 / 14:07:57 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
321 |
! |
|
322 |
||
323 |
throwNoSuchMethodError |
|
324 |
exceptionThrower throwNoSuchMethodError. |
|
325 |
||
326 |
"Created: / 11-04-2011 / 20:19:41 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
327 |
"Modified: / 13-04-2011 / 14:08:01 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
328 |
! ! |
|
329 |
||
330 |
!JavaResolver methodsFor:'field resolving'! |
|
331 |
||
332 |
resolveFieldIndentifiedByRef: aJavaFieldRef |
|
333 |
| result class | |
|
334 |
self validateFieldRef: aJavaFieldRef. |
|
335 |
result := self lookupFieldIfAlreadyResolved: aJavaFieldRef. |
|
336 |
result ifNotNil: [ ^ result ]. |
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class := aJavaFieldRef classRef resolve: false. |
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338 |
class ifNil: [ self error: 'should not happen - tell mh' ]. |
749 | 339 |
result := class lookupFieldByNameAndType: aJavaFieldRef nameAndType. |
340 |
result ifNil: [ self throwNoSuchFieldException ]. |
|
341 |
(self |
|
342 |
checkPermissionsForField: result |
|
343 |
from: aJavaFieldRef classRef owner |
|
344 |
to: class) ifFalse: [ self throwIllegalAccessError ]. |
|
345 |
^ result. |
|
346 |
||
347 |
" |
|
348 |
To resolve an unresolved symbolic reference from D to a field in a class |
|
349 |
or interface C, the symbolic reference to C given by the field reference |
|
350 |
must first be resolved (§5.4.3.1). Therefore, any exception that can be |
|
351 |
thrown as a result of failure of resolution of a class or interface reference |
|
352 |
can be thrown as a result of failure of field resolution. If the reference |
|
353 |
to C can be successfully resolved, an exception relating to the failure of |
|
354 |
resolution of the field reference itself can be thrown. |
|
355 |
When resolving a field reference, field resolution first attempts to look |
|
356 |
up the referenced field in C and its superclasses: |
|
357 |
||
358 |
If C declares a field with the name and descriptor specified by the field |
|
359 |
reference, field lookup succeeds. The declared field is the result of the |
|
360 |
field lookup. |
|
361 |
||
362 |
Otherwise, field lookup is applied recursively to the direct superinterfaces |
|
363 |
of the specified class or interface C. |
|
364 |
||
365 |
Otherwise, if C has a superclass S, field lookup is applied recursively to S. |
|
366 |
||
367 |
Otherwise, field lookup fails. |
|
368 |
If field lookup fails, field resolution throws a NoSuchFieldError. Otherwise, |
|
369 |
if field lookup succeeds but the referenced field is not accessible (§5.4.4) |
|
370 |
to D, field resolution throws an IllegalAccessError. |
|
371 |
Otherwise, let <E, L1> be the class or interface in which the referenced |
|
372 |
field is actually declared and let L2 be the defining loader of D. Let T be |
|
373 |
the name of the type of the referenced field. The Java virtual machine must |
|
374 |
impose the loading constraint that TL1=TL2(§5.3.4)." |
|
375 |
||
376 |
"Created: / 11-04-2011 / 21:15:20 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
2353
fa7400d022a0
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Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
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diff
changeset
|
377 |
"Modified: / 01-12-2012 / 13:45:41 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 378 |
! |
379 |
||
380 |
resolveStaticFieldIndentifiedByRef: aJavaFieldRef |
|
381 |
| result class | |
|
382 |
self validateFieldRef: aJavaFieldRef. |
|
383 |
result := self lookupFieldIfAlreadyResolved: aJavaFieldRef. |
|
384 |
result ifNotNil: [ ^ result ]. |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
385 |
class := aJavaFieldRef classRef resolve: false. |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
386 |
class ifNil: [ self error: 'should not happen - tell mh' ]. |
749 | 387 |
result := class lookupStaticFieldByNameAndType: aJavaFieldRef nameAndType. |
388 |
result ifNil: [ self throwNoSuchFieldException ]. |
|
389 |
(self |
|
390 |
checkPermissionsForField: result |
|
391 |
from: aJavaFieldRef classRef owner |
|
392 |
to: class) ifFalse: [ self throwIllegalAccessError ]. |
|
393 |
^ result. |
|
394 |
||
395 |
" |
|
396 |
To resolve an unresolved symbolic reference from D to a field in a class |
|
397 |
or interface C, the symbolic reference to C given by the field reference |
|
398 |
must first be resolved (§5.4.3.1). Therefore, any exception that can be |
|
399 |
thrown as a result of failure of resolution of a class or interface reference |
|
400 |
can be thrown as a result of failure of field resolution. If the reference |
|
401 |
to C can be successfully resolved, an exception relating to the failure of |
|
402 |
resolution of the field reference itself can be thrown. |
|
403 |
When resolving a field reference, field resolution first attempts to look |
|
404 |
up the referenced field in C and its superclasses: |
|
405 |
||
406 |
If C declares a field with the name and descriptor specified by the field |
|
407 |
reference, field lookup succeeds. The declared field is the result of the |
|
408 |
field lookup. |
|
409 |
||
410 |
Otherwise, field lookup is applied recursively to the direct superinterfaces |
|
411 |
of the specified class or interface C. |
|
412 |
||
413 |
Otherwise, if C has a superclass S, field lookup is applied recursively to S. |
|
414 |
||
415 |
Otherwise, field lookup fails. |
|
416 |
If field lookup fails, field resolution throws a NoSuchFieldError. Otherwise, |
|
417 |
if field lookup succeeds but the referenced field is not accessible (§5.4.4) |
|
418 |
to D, field resolution throws an IllegalAccessError. |
|
419 |
Otherwise, let <E, L1> be the class or interface in which the referenced |
|
420 |
field is actually declared and let L2 be the defining loader of D. Let T be |
|
421 |
the name of the type of the referenced field. The Java virtual machine must |
|
422 |
impose the loading constraint that TL1=TL2(§5.3.4)." |
|
423 |
||
424 |
"Created: / 28-04-2011 / 22:31:34 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
425 |
"Modified: / 01-12-2012 / 13:45:45 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 426 |
! ! |
427 |
||
428 |
!JavaResolver methodsFor:'field resolving helpers'! |
|
429 |
||
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
430 |
checkPermissionsForField: aJavaField from: accessingJavaClass to: resolvedJavaClass |
749 | 431 |
^ self |
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
432 |
checkPermissionsForMethodOrField: aJavaField |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
433 |
from: accessingJavaClass |
749 | 434 |
to: resolvedJavaClass. |
435 |
||
436 |
"Created: / 11-04-2011 / 21:46:29 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
437 |
"Modified: / 01-12-2012 / 13:45:55 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 438 |
! |
439 |
||
440 |
lookupFieldIfAlreadyResolved: aJavaFieldRef |
|
441 |
^ nil. |
|
442 |
||
443 |
"Created: / 11-04-2011 / 21:16:45 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
444 |
"Modified: / 13-04-2011 / 11:57:13 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
445 |
! |
|
446 |
||
447 |
validateFieldRef: aJavaFieldRef |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
448 |
aJavaFieldRef isJavaRef ifFalse: [ self halt: 'I expected Java Ref' ]. |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
449 |
aJavaFieldRef isJavaFieldRef ifFalse: [ |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
450 |
self error: 'I expected Java Field Ref' |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
451 |
]. |
749 | 452 |
|
453 |
"Created: / 11-04-2011 / 21:16:44 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
454 |
"Modified: / 01-12-2012 / 13:46:02 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 455 |
! ! |
456 |
||
457 |
!JavaResolver methodsFor:'interface method resolving'! |
|
458 |
||
459 |
resolveInterfaceMethodIdentifiedByRef: aJavaInterfaceMethodRef |
|
460 |
| result class | |
|
461 |
self validateInterfaceMethodRef: aJavaInterfaceMethodRef. |
|
462 |
result := self |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
463 |
lookupInterfaceMethodIfAlreadyResolved: aJavaInterfaceMethodRef. |
749 | 464 |
result ifNotNil: [ ^ result ]. |
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
465 |
class := aJavaInterfaceMethodRef classRef resolve: false. |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
466 |
class ifNil: [ self error: 'should not happen - tell mh' ]. |
749 | 467 |
class isInterface ifFalse: [ self throwIncompatibleClassChangeError ]. |
468 |
result := class |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
469 |
lookupMethodByNameAndType: aJavaInterfaceMethodRef nameAndType. |
749 | 470 |
result ifNil: [ self throwNoSuchMethodError ]. |
471 |
(self |
|
472 |
checkPermissionsForMethod: result |
|
473 |
from: aJavaInterfaceMethodRef classRef owner |
|
474 |
to: class) ifFalse: [ self throwIllegalAccessError ]. |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
475 |
^ result. |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
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diff
changeset
|
476 |
|
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
477 |
" |
749 | 478 |
To resolve an unresolved symbolic reference from D to an interface method in an |
479 |
interface C, the symbolic reference to C given by the interface method reference is |
|
480 |
first resolved (§5.4.3.1). Therefore, any exceptions that can be thrown as a result |
|
481 |
of failure of resolution of an interface reference can be thrown as a result of |
|
482 |
failure of interface method resolution. If the reference to C can be successfully |
|
483 |
resolved, exceptions relating to the resolution of the interface method reference |
|
484 |
itself can be thrown. |
|
485 |
When resolving an interface method reference: |
|
486 |
||
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
487 |
If C is not an interface, interface method resolution throws an IncompatibleClassChangeError." |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
488 |
"Otherwise, if the referenced method does not have the same name and descriptor as |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
489 |
a method in C or in one of the superinterfaces of C, or in class Object, interface |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
490 |
method resolution throws a NoSuchMethodError. |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
491 |
Otherwise, let <E, L1> be the interface in which the referenced interface method is |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
492 |
actually declared and let L2 be the defining loader of D. Let T0 be the name of |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
493 |
the type returned by the referenced method, and let T1, ..., Tn be the names of the |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
494 |
argument types of the referenced method. The Java virtual machine must impose the |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
495 |
loading constraints TiL1 = TiL2 for i = 0 to n (§5.3.4)." |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
496 |
|
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
497 |
"Modified: / 01-12-2012 / 13:46:09 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 498 |
! ! |
499 |
||
500 |
!JavaResolver methodsFor:'interface method resolving helpers'! |
|
501 |
||
502 |
lookupInterfaceMethodIfAlreadyResolved: aJavaInterfaceMethodRef |
|
503 |
^ nil. |
|
504 |
||
505 |
"Created: / 13-04-2011 / 11:53:36 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
506 |
! |
|
507 |
||
508 |
validateInterfaceMethodRef: aJavaInterfaceMethodRef |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
509 |
aJavaInterfaceMethodRef isJavaRef ifFalse: [ |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
510 |
self error: 'I expected JavaRef instance as an argument' |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
511 |
]. |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
512 |
aJavaInterfaceMethodRef isJavaInterfaceMethodRef ifFalse: [ |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
513 |
self error: 'I expected JavaMethodRef instance as an argument' |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
514 |
]. |
749 | 515 |
|
516 |
"Created: / 13-04-2011 / 11:53:34 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
517 |
"Modified: / 01-12-2012 / 13:46:20 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 518 |
! ! |
519 |
||
520 |
!JavaResolver methodsFor:'method resolving'! |
|
521 |
||
522 |
resolveMethodIndentifiedByRef: aJavaMethodRef |
|
523 |
| result class | |
|
524 |
self validateMethodRef: aJavaMethodRef. |
|
525 |
result := self lookupMethodIfAlreadyResolved: aJavaMethodRef. |
|
526 |
result ifNotNil: [ ^ result ]. |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
527 |
class := aJavaMethodRef classRef resolve: false. |
749 | 528 |
class ifNil: [ self error: 'should not happen - tell mh' ]. |
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
529 |
"Array types responds to all method of class java.lang.Object" |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
530 |
class isJavaArrayClass ifTrue: [ |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
531 |
class := JavaVM classForName: 'java.lang.Object'. |
749 | 532 |
]. |
533 |
" |
|
534 |
To resolve an unresolved symbolic reference from D to a method in |
|
535 |
a class C, the symbolic reference to C given by the method reference |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
536 |
is first resolved (§5.4.3.1). Therefore, any exceptions that can be |
749 | 537 |
thrown due to resolution of a class reference can be thrown as a result |
538 |
of method resolution. If the reference to C can be successfully resolved, |
|
539 |
exceptions relating to the resolution of the method reference itself |
|
540 |
can be thrown. |
|
541 |
When resolving a method reference: |
|
542 |
||
543 |
Method resolution checks whether C is a class or an interface. |
|
544 |
If C is an interface, method resolution throws an IncompatibleClassChangeError." |
|
545 |
class isInterface ifTrue: [ self throwIncompatibleClassChangeError ]. |
|
546 |
"Method resolution attempts to look up the referenced method in C and its |
|
547 |
superclasses: |
|
548 |
If C declares a method with the name and descriptor specified by the method |
|
549 |
reference, method lookup succeeds. |
|
550 |
Otherwise, if C has a superclass, step 2 of method lookup is recursively |
|
551 |
invoked on the direct superclass of C. |
|
552 |
||
553 |
Otherwise, method lookup attempts to locate the referenced method in any of |
|
554 |
the superinterfaces of the specified class C. |
|
555 |
If any superinterface of C declares a method with the name and descriptor |
|
556 |
specified by the method reference, method lookup succeeds. |
|
557 |
Otherwise, method lookup fails. |
|
558 |
If method lookup fails, method resolution throws a NoSuchMethodError. If method |
|
559 |
lookup succeeds and the method is abstract, but C is not abstract, method resolution |
|
560 |
throws an AbstractMethodError. Otherwise, if the referenced method is not accessible |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
561 |
(§5.4.4) to D, method resolution throws an IllegalAccessError." |
749 | 562 |
result := class lookupMethodByNameAndType: aJavaMethodRef nameAndType. |
563 |
result ifNil: [ self throwNoSuchMethodError ]. |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
564 |
(result isAbstract |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
565 |
and: [ result javaClass isInterface not and: [ class isAbstract not ] ]) |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
566 |
ifTrue: [ self throwAbstractMethodError ]. |
749 | 567 |
(self |
568 |
checkPermissionsForMethod: result |
|
569 |
from: aJavaMethodRef classRef owner |
|
570 |
to: class) ifFalse: [ self throwIllegalAccessError ]. |
|
571 |
^ result. |
|
572 |
||
573 |
"Otherwise, let <E, L1> be the class or interface in which the referenced method is |
|
574 |
actually declared and let L2 be the defining loader of D. Let T0 be the name of |
|
575 |
the type returned by the referenced method, and let T1, ..., Tn be the names of |
|
576 |
the argument types of the referenced method. The Java virtual machine must impose |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
577 |
the loading constraints TiL1=TiL2 for i = 0 to n (§5.3.4)." |
749 | 578 |
|
2353
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
579 |
"Created: / 11-04-2011 / 19:45:34 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
Jan Vrany <jan.vrany@fit.cvut.cz>
parents:
2231
diff
changeset
|
580 |
"Modified: / 14-04-2011 / 00:01:34 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
fa7400d022a0
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|
581 |
"Modified: / 10-08-2011 / 22:44:14 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
fa7400d022a0
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|
582 |
"Modified (format): / 01-12-2012 / 13:46:25 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 583 |
! ! |
584 |
||
585 |
!JavaResolver methodsFor:'method resolving helpers'! |
|
586 |
||
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|
587 |
checkPermissionsForMethod: aJavaMethod from: accessingJavaClass to: resolvedJavaClass |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
588 |
^ self |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
589 |
checkPermissionsForMethodOrField: aJavaMethod |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
590 |
from: accessingJavaClass |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
591 |
to: resolvedJavaClass. |
749 | 592 |
|
593 |
"Created: / 11-04-2011 / 20:20:12 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
594 |
"Modified: / 24-05-2011 / 14:06:09 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
|
2353
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|
595 |
"Modified: / 09-02-2012 / 23:15:48 / mh <hlopik@gmail.com>" |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
596 |
"Modified: / 01-12-2012 / 13:46:58 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 597 |
! |
598 |
||
599 |
lookupMethodIfAlreadyResolved: aJavaMethodRef |
|
600 |
^ nil. |
|
601 |
||
602 |
"Created: / 11-04-2011 / 19:50:38 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
603 |
"Modified: / 13-04-2011 / 11:57:00 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
604 |
! |
|
605 |
||
606 |
validateMethodRef: aJavaMethodRef |
|
2353
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|
607 |
aJavaMethodRef isJavaRef ifFalse: [ |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
608 |
self error: 'I expected JavaRef instance as an argument' |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
609 |
]. |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
610 |
aJavaMethodRef isJavaMethodRef ifFalse: [ |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
611 |
self error: 'I expected JavaMethodRef instance as an argument' |
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
612 |
]. |
749 | 613 |
|
614 |
"Created: / 11-04-2011 / 19:47:25 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
|
2353
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|
615 |
"Modified: / 01-12-2012 / 13:47:03 / Marcel Hlopko <hlopkmar@fel.cvut.cz>" |
749 | 616 |
! ! |
617 |
||
618 |
!JavaResolver class methodsFor:'documentation'! |
|
619 |
||
2353
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|
620 |
version_CVS |
2678
c865275e48a7
Updated to match Mercurial revision a00302fe5083 with two tweaks:
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|
621 |
^ '$Header: /cvs/stx/stx/libjava/JavaResolver.st,v 1.6 2013-09-06 00:41:26 vrany Exp $' |
2156
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|
622 |
! |
a8c5720d1d05
changed: #resolveMethodIndentifiedByRef:
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changeset
|
623 |
|
2353
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|
624 |
version_HG |
fa7400d022a0
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|
625 |
|
fa7400d022a0
Updated to https://swing.fit.cvut.cz/hg/stx.libjava/rev/31f8b995905e
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|
626 |
^ '$Changeset: <not expanded> $' |
2156
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changed: #resolveMethodIndentifiedByRef:
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|
627 |
! |
a8c5720d1d05
changed: #resolveMethodIndentifiedByRef:
Claus Gittinger <cg@exept.de>
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diff
changeset
|
628 |
|
749 | 629 |
version_SVN |
2353
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|
630 |
^ '§Id§' |
749 | 631 |
! ! |
632 |
||
2353
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parents:
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|
633 |
|
2152 | 634 |
JavaResolver initialize! |