author | Claus Gittinger <cg@exept.de> |
Thu, 24 Nov 2011 13:02:05 +0100 | |
changeset 2330 | b189800c0d92 |
parent 2304 | 73806b718f4e |
child 2353 | fa7400d022a0 |
permissions | -rw-r--r-- |
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" |
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COPYRIGHT (c) 1996-2011 by Claus Gittinger |
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This software is furnished under a license and may be used |
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only in accordance with the terms of that license and with the |
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inclusion of the above copyright notice. This software may not |
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be provided or otherwise made available to, or used by, any |
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other person. No title to or ownership of the software is |
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hereby transferred. |
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" |
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"{ Package: 'stx:libjava' }" |
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Context variableSubclass:#JavaContext |
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instanceVariableNames:'exArg exPC byteCode constPool' |
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classVariableNames:'' |
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poolDictionaries:'' |
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category:'Languages-Java-Support' |
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! |
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||
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!JavaContext 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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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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!JavaContext methodsFor:'* As yet uncategorized *'! |
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markForException |
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"set the exception handler flag in the receiver. |
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The JVM needs this to enter an exception handler instead of restarting |
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from the beginning (when the context is restarted). |
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- a highly internal mechanism and not for public use." |
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" |
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%{ /* NOCONTEXT */ |
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#ifdef __JAVA_EX_PEND |
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/* actually no longer - only a non-nil exPC is now used as marker */ |
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__INST(flags) = (OBJ)((INT)__INST(flags) | __MASKSMALLINT(__JAVA_EX_PEND)); |
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#endif |
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%} |
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" |
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||
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"Modified: / 13-12-1995 / 19:05:22 / cg" |
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"Modified: / 25-10-2010 / 17:19:23 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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! ! |
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!JavaContext methodsFor:'ST context mimicri'! |
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arg1Index |
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"the java stack contains the receiver in a non-static |
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method, as slot 0. Therefore, the first arg is found at slot2 |
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if this is for a non-static method" |
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self method isStatic ifTrue:[ |
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^ 1 |
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]. |
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^ 2 |
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! |
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argAt:n |
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"return the i'th argument (1..nArgs)" |
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^ self at:(self arg1Index - 1 + n) |
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"Created: / 2.1.1998 / 17:54:13 / cg" |
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"Modified: / 2.1.1998 / 21:39:30 / cg" |
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! |
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argAt:n put:value |
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"change the i'th argument (1..nArgs)" |
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^ super argAt:(self arg1Index - 1 + n) put:value |
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"Created: / 2.1.1998 / 17:54:34 / cg" |
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"Modified: / 2.1.1998 / 21:35:19 / cg" |
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! |
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args |
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"return an array filled with the arguments of this context" |
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||
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|n| |
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n := self numArgs. |
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n == 0 ifTrue:[ |
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"/ little optimization here - avoid creating empty containers |
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^ #() |
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]. |
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||
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^ (Array new:n) replaceFrom:1 to:n with:self startingAt:(self arg1Index). |
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"Created: / 2.1.1998 / 17:54:57 / cg" |
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"Modified: / 2.1.1998 / 21:34:44 / cg" |
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! |
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argsAndVars |
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"return an array filled with the arguments and variables of this context" |
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||
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|n| |
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n := self numArgs + self numVars. |
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n == 0 ifTrue:[ |
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"/ little optimization here - avoid creating empty containers |
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^ #() |
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]. |
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^ (Array new:n) replaceFrom:1 to:n with:self startingAt:(self arg1Index). |
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"Created: / 2.1.1998 / 17:55:14 / cg" |
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"Modified: / 13.1.1998 / 15:44:56 / cg" |
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! |
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||
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lineNumber |
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|nr pc| |
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pc := self pc. |
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"/ 'ask line for pc:' print. pc printCR. |
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pc isNil ifTrue:[ |
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nr := self lineNumberFromMethod. |
127 |
nr notNil ifTrue:[ |
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^ nr |
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]. |
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" '-> 0 [a]' printCR. " |
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^0 |
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]. |
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nr := self method lineNumberForPC:pc. |
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nr isNil ifTrue:[ |
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nr := self lineNumberFromMethod. |
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nr notNil ifTrue:[ |
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^ nr |
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]. |
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" '-> 0 [b]' printCR. " |
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^ 0 |
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]. |
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"/ '-> ' print. nr printCR. |
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^ nr. |
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|
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"Created: / 1.5.1996 / 15:05:47 / cg" |
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"Modified: / 15.1.1998 / 15:25:29 / cg" |
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! |
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||
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lineNumberFromMethod |
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|m| |
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||
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m := self method. |
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m notNil ifTrue:[ |
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^ m lineNumber |
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]. |
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^ nil |
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"Created: / 4.1.1998 / 23:34:45 / cg" |
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"Modified: / 4.1.1998 / 23:35:55 / cg" |
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! |
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method |
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"the method may be found in the interpreter temps ..." |
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method isJavaMethod ifTrue:[^ method]. |
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^ super method |
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"Created: / 1.5.1996 / 15:03:43 / cg" |
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"Modified: / 25.9.1999 / 23:26:40 / cg" |
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! |
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numArgs |
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"return the number of args. |
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Redefined since Java keeps the receiver of a non-static method |
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at local slot 1." |
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|n| |
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n := super numArgs. |
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self method isStatic ifFalse:[ |
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n := n - 1 |
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]. |
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^ n |
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"Created: / 2.1.1998 / 22:21:24 / cg" |
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! |
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numTemps |
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"return the number of temporary variables of the Method. |
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Redefined since Java keeps the receiver of a non-static method |
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at local slot 1." |
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|n| |
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n := self size - super numVars - super numArgs. |
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^ n |
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"Created: / 13.1.1998 / 16:52:32 / cg" |
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"Modified: / 13.1.1998 / 17:23:27 / cg" |
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! |
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numVars |
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"return the number of locals. |
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Redefined since Java keeps the receiver of a non-static method |
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at local slot 0 and holds the args as locals." |
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|n| |
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n := super numVars. |
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^ (n - self numArgs) max:0 |
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"Created: / 13.1.1998 / 17:03:08 / cg" |
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"Modified: / 13.1.1998 / 17:25:16 / cg" |
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! |
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pc |
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lineNr isNil ifTrue:[^ nil]. |
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^ lineNr bitAnd:16rFFFF |
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"Created: / 4.1.1998 / 23:33:48 / cg" |
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"Modified: / 10.11.1998 / 13:20:12 / cg" |
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! |
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||
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quickLineNumber |
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"the lineNumber - without decompiling" |
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^ self method quickLineNumberForPC:self pc |
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"Created: / 10.11.1998 / 14:20:30 / cg" |
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! |
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selector |
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"the selector can be extracted from the method. |
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the method may be found in the interpreter temps ..." |
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|s m| |
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selector isNil ifTrue:[ |
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m := self method. |
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m notNil ifTrue:[ |
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^ m name |
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] |
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]. |
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^ super selector |
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"Modified: / 30.12.1997 / 17:22:06 / cg" |
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"Created: / 30.12.1997 / 17:23:47 / cg" |
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! |
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setPC:newPC |
252 |
lineNr := newPC |
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"Created: / 5.1.1998 / 00:09:02 / cg" |
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! |
256 |
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temporaries |
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"return an array filled with the arguments and variables of this context" |
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||
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|n nSkipped| |
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||
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"/ the flas-numVars includes the receiver and args |
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nSkipped := super numVars "self numArgs + self numVars". |
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"/ but my context setup is args+numvars. |
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nSkipped := super numArgs + super numVars. |
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||
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n := self size - nSkipped. |
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n == 0 ifTrue:[ |
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"/ little optimization here - avaoid creating empty containers |
270 |
^ #() |
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]. |
272 |
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^ (Array new:n) replaceFrom:1 to:n with:self startingAt:nSkipped+1. |
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274 |
||
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"Created: / 13.1.1998 / 15:44:12 / cg" |
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"Modified: / 13.1.1998 / 17:22:54 / cg" |
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! |
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278 |
||
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vars |
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"return an array filled with the local variables of this context" |
281 |
||
282 |
|nonVars mySize| |
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283 |
||
284 |
mySize := self numVars. |
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mySize == 0 ifTrue:[ |
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"/ little optimization here - avaoid creating empty containers |
287 |
^ #() |
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]. |
289 |
nonVars := (self arg1Index-1) + self numArgs. |
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^ (Array new:mySize) replaceFrom:1 to:mySize with:self startingAt:nonVars+1 |
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291 |
||
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"Created: / 13.1.1998 / 16:48:16 / cg" |
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! ! |
294 |
||
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!JavaContext methodsFor:'accessing'! |
296 |
||
297 |
programmingLanguage |
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298 |
||
299 |
^JavaLanguage instance |
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300 |
||
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"Created: / 17-03-2011 / 10:17:45 / Jan Vrany <jan.vrany@fit.cvut.cz>" |
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! ! |
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303 |
||
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!JavaContext methodsFor:'exception handler support'! |
117 | 305 |
|
255 | 306 |
exceptionArg:aJavaException |
511 | 307 |
exArg := aJavaException. |
308 |
||
309 |
"Created: / 7.1.1998 / 21:36:56 / cg" |
|
310 |
! |
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311 |
||
312 |
exceptionArg:aJavaException pc:newPc |
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313 |
exArg := aJavaException. |
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314 |
exPC := newPc. |
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255 | 315 |
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316 |
"Created: / 7.1.1998 / 21:36:56 / cg" |
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! ! |
318 |
||
319 |
!JavaContext methodsFor:'printing & storing'! |
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320 |
||
252 | 321 |
receiverPrintString |
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"return a string describing the receiver of the context" |
52 | 323 |
|
680 | 324 |
|receiverClass receiverClassName newString implementorClass searchClass| |
28 | 325 |
|
363 | 326 |
"/ %{ |
327 |
"/ /* |
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328 |
"/ * special handling for (invalid) free objects. |
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329 |
"/ * these only appear if some primitiveCode does not correctly use SEND macros, |
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330 |
"/ * which may lead to sends to free objects. In normal operation, this 'cannot' happen. |
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2150 | 331 |
"/ */ |
363 | 332 |
"/ if (__isNonNilObject(__INST(receiver)) && (__qClass(__INST(receiver))==nil)) { |
333 |
"/ receiverClassName = __MKSTRING("FreeObject"); |
|
334 |
"/ } |
|
335 |
"/ %}. |
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680 | 336 |
"/ receiverClassName notNil ifTrue:[^ receiverClassName]. |
228 | 337 |
|
252 | 338 |
receiverClass := receiver class. |
680 | 339 |
"/ java has no class-methods ... |
340 |
receiverClass := receiverClass theNonMetaclass. |
|
341 |
||
342 |
receiverClassName := receiverClass nameInBrowser. |
|
252 | 343 |
(receiverClass == SmallInteger) ifTrue:[ |
2150 | 344 |
newString := '(' , receiver printString , ') ' , receiverClassName |
228 | 345 |
] ifFalse:[ |
2150 | 346 |
newString := receiverClassName |
228 | 347 |
]. |
348 |
||
252 | 349 |
" |
350 |
kludge to avoid slow search for containing class |
|
351 |
" |
|
352 |
(selector ~~ #doIt and:[selector ~~ #doIt:]) ifTrue:[ |
|
2150 | 353 |
implementorClass := self methodClass. |
252 | 354 |
]. |
355 |
implementorClass notNil ifTrue: [ |
|
2150 | 356 |
(implementorClass ~~ receiverClass) ifTrue: [ |
357 |
newString := newString , '>>>', |
|
358 |
implementorClass nameInBrowser printString |
|
359 |
] |
|
252 | 360 |
] ifFalse:[ |
2150 | 361 |
searchClass := self searchClass. |
362 |
searchClass ~~ receiverClass ifTrue:[ |
|
363 |
newString := newString , '>>>' , searchClass nameInBrowser |
|
364 |
]. |
|
252 | 365 |
"/ " |
366 |
"/ kludge for doIt - these unbound methods are not |
|
367 |
"/ found in the classes methodDictionary |
|
368 |
"/ " |
|
369 |
"/ (selector ~~ #doIt and:[selector ~~ #doIt:]) ifTrue:[ |
|
370 |
"/ newString := newString , '>>>**NONE**' |
|
371 |
"/ ] |
|
28 | 372 |
]. |
373 |
||
252 | 374 |
^ newString |
28 | 375 |
! ! |
376 |
||
343 | 377 |
!JavaContext methodsFor:'queries'! |
378 |
||
379 |
hasStackToShow |
|
380 |
"private interface to the debugger. |
|
381 |
Smalltalk contexts return false here - other language frames |
|
382 |
(i.e. Java frames) may want to show the evaluation stack" |
|
383 |
||
384 |
^ true |
|
385 |
||
386 |
"Modified: / 13.5.1997 / 16:31:12 / cg" |
|
387 |
"Created: / 7.5.1998 / 01:23:57 / cg" |
|
388 |
! |
|
389 |
||
346 | 390 |
isJavaContext |
391 |
"return true, if this is a javaContext." |
|
392 |
||
393 |
^ true |
|
394 |
||
395 |
"Created: / 8.5.1998 / 21:23:47 / cg" |
|
396 |
! |
|
397 |
||
343 | 398 |
stackFrame |
399 |
"private interface to the debugger." |
|
400 |
||
401 |
^ (1 to:self size) collect:[:i | self at:i] |
|
402 |
||
403 |
"Created: / 7.5.1998 / 01:26:19 / cg" |
|
404 |
! ! |
|
405 |
||
129 | 406 |
!JavaContext class methodsFor:'documentation'! |
28 | 407 |
|
408 |
version |
|
2304
73806b718f4e
fixed: #version_SVN ($ to §)
Claus Gittinger <cg@exept.de>
parents:
2168
diff
changeset
|
409 |
^ '$Header: /cvs/stx/stx/libjava/JavaContext.st,v 1.38 2011-11-24 11:54:57 cg Exp $' |
73806b718f4e
fixed: #version_SVN ($ to §)
Claus Gittinger <cg@exept.de>
parents:
2168
diff
changeset
|
410 |
! |
73806b718f4e
fixed: #version_SVN ($ to §)
Claus Gittinger <cg@exept.de>
parents:
2168
diff
changeset
|
411 |
|
73806b718f4e
fixed: #version_SVN ($ to §)
Claus Gittinger <cg@exept.de>
parents:
2168
diff
changeset
|
412 |
version_CVS |
73806b718f4e
fixed: #version_SVN ($ to §)
Claus Gittinger <cg@exept.de>
parents:
2168
diff
changeset
|
413 |
^ '$Header: /cvs/stx/stx/libjava/JavaContext.st,v 1.38 2011-11-24 11:54:57 cg Exp $' |
2151 | 414 |
! |
415 |
||
416 |
version_SVN |
|
2168 | 417 |
^ '§Id: JavaContext.st,v 1.36 2011/08/18 18:42:48 vrany Exp §' |
2108 | 418 |
! ! |