"

 COPYRIGHT (c) 1996-2015 by Claus Gittinger

 New code and modifications done at SWING Research Group [1]:

 COPYRIGHT (c) 2010-2015 by Jan Vrany, Jan Kurs and Marcel Hlopko

                            SWING Research Group, Czech Technical University in Prague

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

 [1] Code written at SWING Research Group contains a signature

     of one of the above copright owners. For exact set of such code,

     see the differences between this version and version stx:libjava

     as of 1.9.2010

"

"{ Package: 'stx:libjava/experiments' }"

JavaByteCodeInterpreter subclass:#JavaByteCodeSteppableInterpreter

	instanceVariableNames:'interpretInnerHook'

	classVariableNames:''

	poolDictionaries:''

	category:'Languages-Java-Bytecode'

!

!JavaByteCodeSteppableInterpreter class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1996-2015 by Claus Gittinger

 New code and modifications done at SWING Research Group [1]:

 COPYRIGHT (c) 2010-2015 by Jan Vrany, Jan Kurs and Marcel Hlopko

                            SWING Research Group, Czech Technical University in Prague

 This software is furnished under a license and may be used

 only in accordance with the terms of that license and with the

 inclusion of the above copyright notice.   This software may not

 be provided or otherwise made available to, or used by, any

 other person.  No title to or ownership of the software is

 hereby transferred.

 [1] Code written at SWING Research Group contains a signature

     of one of the above copright owners. For exact set of such code,

     see the differences between this version and version stx:libjava

     as of 1.9.2010

"

! !

!JavaByteCodeSteppableInterpreter methodsFor:'accessing'!

byteCode

^ byteCode.

    "Created: / 01-04-2011 / 16:18:42 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

constantPool

^constantPool.

    "Created: / 01-04-2011 / 16:20:18 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

context

    ^ context.

    "Created: / 01-04-2011 / 16:20:07 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

currentOp

    ^ op.

    "Created: / 01-04-2011 / 16:18:56 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

instructionPointer

^ instrPointer.

    "Created: / 01-04-2011 / 16:19:41 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

method

    ^ method.

    "Created: / 01-04-2011 / 16:20:28 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

numArgs

    ^ numArgs.

    "Created: / 01-04-2011 / 16:19:12 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

numVars

^numVars.

    "Created: / 01-04-2011 / 16:19:07 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

programCounter

^pc.

    "Created: / 01-04-2011 / 16:20:44 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

receiver

^ receiver.

    "Created: / 01-04-2011 / 16:19:59 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

stackPointer

^ sp.

    "Created: / 01-04-2011 / 16:18:23 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

wide

    ^ wide.

    "Created: / 01-04-2011 / 16:19:26 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

! !

!JavaByteCodeSteppableInterpreter methodsFor:'interpretation'!

enterProcessingLoop

"nothing done here (yet?), call interpretNext"

    "Created: / 31-03-2011 / 16:40:39 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Modified: / 01-04-2011 / 16:13:49 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

hasFinished

    ^ leaveProcessor.

    "Created: / 31-03-2011 / 22:53:55 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

interpret: aMethod receiver: aReceiver arguments: args 

    self 

        log: ('Invoking method ' , aMethod name , ' on ' , aReceiver printString 

                , ' with ' , args printString).

    super 

        interpret: aMethod

        receiver: aReceiver

        arguments: args.

    ^ self.

    "Created: / 17-03-2011 / 17:25:01 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Modified: / 01-04-2011 / 16:10:28 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

interpretInner:aJavaMethod receiver:aReceiver arguments:arguments 

    interpretInnerHook isNil ifTrue:[

        ^ super 

            interpretInner:aJavaMethod

            receiver:aReceiver

            arguments:arguments

    ] ifFalse:[

        ^ interpretInnerHook 

            with:aJavaMethod

            with:aReceiver

            with:arguments

    ].

    "Created: / 31-03-2011 / 16:41:14 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Modified: / 01-04-2011 / 16:15:22 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Modified: / 04-08-2014 / 15:50:09 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

interpretInnerHook: threeArgBlock 

    "args: method receiver arguments"

    interpretInnerHook := threeArgBlock.

    "Created: / 31-03-2011 / 22:50:44 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Modified: / 08-04-2011 / 14:49:04 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

interpretNext

    leaveProcessor ifTrue: [ ^ self interpretationFinished ].

    Context cannotReturnSignal handle: [:ex | ^ ex parameter ]

        do: 

            [ instrPointer := pc.

            op := byteCode at: pc.

            pc := pc + 1.

            self switch: op. ].

    "Created: / 31-03-2011 / 16:41:14 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

returnValue

    ^ retVal.

    "Created: / 31-03-2011 / 22:53:42 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

! !

!JavaByteCodeSteppableInterpreter class methodsFor:'documentation'!

version_CVS

    ^ '$Header: /cvs/stx/stx/libjava/experiments/JavaByteCodeSteppableInterpreter.st,v 1.5 2015-03-20 13:29:44 vrany Exp $'

!

version_HG

    ^ '$Changeset: <not expanded> $'

!

version_SVN

    ^ 'Id'

! !