"

 COPYRIGHT (c) 1996-2011 by Claus Gittinger

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

 COPYRIGHT (c) 2010-2011 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' }"

JavaClassContentRef2 subclass:#JavaFieldRef2

	instanceVariableNames:'offset type'

	classVariableNames:'T_LONG T_DOUBLE'

	poolDictionaries:''

	category:'Languages-Java-Reader-Support-new'

!

!JavaFieldRef2 class methodsFor:'documentation'!

copyright

"

 COPYRIGHT (c) 1996-2011 by Claus Gittinger

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

 COPYRIGHT (c) 2010-2011 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

"

! !

!JavaFieldRef2 class methodsFor:'initialization'!

initialize

    T_LONG := 1.

    T_DOUBLE := 2.

    "Created: / 15-05-2011 / 22:31:19 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

! !

!JavaFieldRef2 methodsFor:'accessing'!

isJavaFieldRef

^true.

    "Created: / 11-04-2011 / 21:47:51 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

offset

    ^ offset.

    "Created: / 15-05-2011 / 22:26:08 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

type

    ^ type.

    "Created: / 15-05-2011 / 22:29:05 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Modified: / 05-10-2013 / 23:57:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaFieldRef2 methodsFor:'private - resolving'!

findInstOffset

    "fieldRef must be resolved before calling me"

    self assert: classCache notNil.

    self assert: valueCache notNil.

    ^ classCache instVarOffsetOf: self name.

    "Created: / 07-12-2011 / 13:44:59 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

findResolvedStaticValue

self findResolvedValue.

    "Created: / 28-04-2011 / 22:05:10 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Modified: / 03-12-2011 / 12:16:48 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 08-12-2011 / 13:37:05 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

findResolvedValue: doClassInit

    "

    Stores resolved field in valueCache field, fills offset and 

    "

    valueCache := JavaResolver uniqueInstance 

                resolveFieldIndentifiedByRef: self.

    valueCache isStatic ifTrue: [ classCache := valueCache javaClass ] ifFalse: [

    ].

    classCache isNil ifTrue: [ self breakPoint: #mh ].

    self resolveOffset.

    nameAndTypeCache := (constantPool at: nameAndTypeIndex) resolve.

    self resolveType.

    nameAndTypeCache isNil ifTrue: [ self breakPoint: #mh ].

    "Modified: / 07-12-2011 / 21:52:23 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Created: / 09-02-2012 / 23:09:18 / mh <hlopik@gmail.com>"

    "Modified: / 16-10-2012 / 10:46:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

findStaticOffset

    "fieldRef must be resolved before calling me"

    self assert: classCache notNil.

    self assert: valueCache notNil.

    ^ classCache class instVarOffsetOf: self name.

    "Created: / 07-12-2011 / 13:45:15 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

preResolve

    self resolveType

    "Created: / 16-10-2012 / 10:45:17 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

reresolveForVersion: javaClass

    "

    Reresolves fieldRef with class cache set to given javaClass. This is the 

    way VM tells us which class version to use. This method is called only when

    there are multiple class versions present.

    "

    self classRef javaClass: javaClass.

    self findResolvedValue: true.

    "Created: / 12-10-2013 / 15:44:04 / Marcel Hlopko <marcel.hlopko@fit.cvut.cz>"

!

resolveOffset

    "fieldRef must be resolved before calling me"

    self assert: valueCache notNil.

    self assert: classCache isJavaClass.

    valueCache isStatic ifTrue: [ offset := self findStaticOffset. ] ifFalse: [

        offset := self findInstOffset.

    ].

    self assert: offset notNil.

    "Modified: / 07-12-2011 / 21:47:43 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

resolveStaticOffset

    "fieldRef must be resolved before calling me"

    | currentClass |

    currentClass := classCache.

    self assert: (currentClass class instVarNames includes: self name).

    offset := currentClass class instVarOffsetOf: self name.

    "Modified: / 07-12-2011 / 13:38:03 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

resolveType

    | descriptor |

    descriptor := (constantPool at: nameAndTypeIndex) descriptor.

    type := 0.

    descriptor = 'J' ifTrue:[

        type := T_LONG.

    ] ifFalse:[

        descriptor = 'D' ifTrue:[

            type := T_DOUBLE

        ]

    ].

    "Created: / 15-05-2011 / 22:29:02 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Modified: / 05-10-2013 / 23:56:05 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaFieldRef2 class methodsFor:'documentation'!

version_CVS

    ^ '$Header: /cvs/stx/stx/libjava/JavaFieldRef2.st,v 1.6 2013-09-06 00:41:23 vrany Exp $'

!

version_HG

    ^ '$Changeset: <not expanded> $'

!

version_SVN

    ^ 'Id'

! !

JavaFieldRef2 initialize!