JavaBehavior.st
author Jan Vrany <jan.vrany@fit.cvut.cz>
Fri, 24 May 2013 17:55:42 +0100
branchbuiltin-class-support
changeset 2629 cedb88626902
parent 2504 08bdd02727cf
child 2711 a00302fe5083
child 2730 272689c14005
permissions -rw-r--r--
Closing branch.

"
 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' }"

Class subclass:#JavaBehavior
	instanceVariableNames:'constantPool interfaces accessFlags initValues'
	classVariableNames:'InitialValuePerType ACX_ABSTRACT_OR_INTERFACE'
	poolDictionaries:'JavaConstants'
	category:'Languages-Java-Classes'
!

!JavaBehavior 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

"
!

documentation
"
    A base class for all Java classes. Slots & behavior defined here
    is known to the VM. Do not change the order of slots and
    add only to the end. You will have to modify stc.h then.

    Non-VM known stuff could be added to JavaClass safely.

    [author:]
        Jan Vrany <jan.vrany@fit.cvut.cz>

    [instance variables:]
        constantPool
        interfaces
        accessFlags
    [class variables:]

    [see also:]

"
! !

!JavaBehavior class methodsFor:'initialization'!

initialize

    "/ Cannot do this as the constant pool may not be initialized
    "/ACX_ABSTRACT_OR_INTERFACE := ACC_ABSTRACT bitOr:ACC_INTERFACE.
    ACX_ABSTRACT_OR_INTERFACE := 16r0000400 bitOr: 16r0000200.

    InitialValuePerType := IdentityDictionary new.
    InitialValuePerType at:$B put:0.
    InitialValuePerType at:$C put:0.
    InitialValuePerType at:$D put:0.0.
    InitialValuePerType at:$F put:(0.0 asShortFloat).
    InitialValuePerType at:$I put:0.
    InitialValuePerType at:$J put:0.
    InitialValuePerType at:$S put:0.
    InitialValuePerType at:$Z put:0.
    InitialValuePerType at:$L put:nil.
    InitialValuePerType at:$[ put:nil.

    "
     JavaBehavior initialize
    "

    "Modified: / 13-11-1998 / 14:09:52 / cg"
    "Modified: / 11-02-2012 / 16:55:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!JavaBehavior class methodsFor:'constants'!

ACC_NATIVE
    ^ ACC_NATIVE

    "Created: / 16.5.1998 / 01:18:43 / cg"
!

ACC_PUBLIC
    ^ ACC_PUBLIC

    "Created: / 13.5.1998 / 13:03:18 / cg"
!

ACC_STATIC
    ^ ACC_STATIC

    "Created: / 16.5.1998 / 00:02:07 / cg"
! !

!JavaBehavior class methodsFor:'signature parsing'!

initialValueFromSignature:aSignature
    "given a signature, return an initializer value"

    |s|

    s := aSignature readStream.
    ^ self initialValueFromStream:s.

    "
     JavaBehavior initialValueFromSignature:'LObject;'
     JavaBehavior initialValueFromSignature:'B'
     JavaBehavior initialValueFromSignature:'I'
    "
!

initialValueFromStream:s
    "parse a fieldTypeSpec - see java doc"

    |typeChar|

    typeChar := s next.
    ^ InitialValuePerType at:typeChar ifAbsent:nil.
! !

!JavaBehavior methodsFor:'accessing'!

accessFlags
    ^ accessFlags
!

constantPool
    ^ constantPool
!

interfaceNames
    "Returns set of intefaces as java names (dotted)"
    ^( interfaces ? #() ) collect:[:e|e isJavaClassRef ifTrue:[e javaClassName] ifFalse:[e name asDottedJavaClassName]].

    "Created: / 13-02-2013 / 09:33:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

interfaces
    interfaces notNil 
        ifTrue:
            [ interfaces := interfaces collect:
                [:clsRef | clsRef javaClass ] ].

    ^ interfaces ? #()

    "Modified: / 31-05-2011 / 09:40:42 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!JavaBehavior methodsFor:'compiler interface'!

programmingLanguage

    ^JavaLanguage instance

    "Created: / 26-10-2010 / 23:42:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!JavaBehavior methodsFor:'private accessing'!

makeObsolete
    accessFlags := accessFlags bitOr:ACC_OBSOLETE

    "Created: 7.8.1997 / 19:04:48 / cg"
!

markCacheable
    "
    mark this class cacheable - references to this class don't have to be 
    resolved over and over again, but can be cached.
    "
    self breakPoint: #mh.

    "Created: / 14-04-2013 / 14:17:38 / Marcel Hlopko <marcel.hlopko@fit.cvut.cz>"
!

markNonCacheable
    "
    mark this class non cacheable - references to this class have to be 
    resolved over and over again, because multiple versions of this class exist.
    "
    self breakPoint: #mh.

    "Created: / 14-04-2013 / 14:25:23 / Marcel Hlopko <marcel.hlopko@fit.cvut.cz>"
!

markUninitialized
    (accessFlags bitAnd:ACX_INITIALIZED) ~~ 0 ifTrue:[
	accessFlags := accessFlags bitXor:ACX_INITIALIZED
    ].
!

setAccessFlags:flags
    accessFlags := flags.

    "Created: 15.4.1996 / 16:42:52 / cg"
!

setConstantPool: aJavaConstantPool
    constantPool := aJavaConstantPool.
    constantPool ifNotNil:[constantPool owner: self].

    "Created: / 15-04-1996 / 16:42:52 / cg"
    "Modified: / 22-05-2011 / 13:16:21 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

setInterfaces:i
    i size > 0 ifTrue:[
	interfaces := i
    ] ifFalse:[
	interfaces := nil
    ]

    "Modified: 7.4.1997 / 15:44:53 / cg"
! !

!JavaBehavior methodsFor:'queries'!

hasInterface:aJavaInterface
    "return true, if I respond to all methods as
     required by the argument, an aJavaInterface"

    interfaces size > 0 ifTrue:[
	self interfaces do:[:if |
	    aJavaInterface == if ifTrue:[
		^ true
	    ].
	]
    ].
    superclass isJavaClass ifTrue:[
	^ superclass hasInterface:aJavaInterface
    ].
    ^ false.

"/    aJavaInterface methodDictionary keysAndValuesDo:[:sel :mthd |
"/        (self canUnderstand:sel) ifFalse:[
"/            ^ false.
"/        ]
"/    ].
    ^ true

    "Modified: / 28.1.1998 / 01:46:16 / cg"

!

isAbstract
    "return true, if the receiver is abstract
     (i.e. may not have instances)"

    ^ (accessFlags bitAnd:ACC_ABSTRACT) ~~ 0

    "Modified: / 7.5.1998 / 12:24:42 / cg"
!

isAnnotation
    "return true, if the receiver is an interface"

    ^ (accessFlags bitAnd:ACC_ANNOTATION) ~~ 0

    "Modified: / 07-05-1998 / 12:23:39 / cg"
    "Created: / 11-02-2012 / 16:55:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

isEnum
    "return true, if the receiver is an interface"

    ^ (accessFlags bitAnd:ACC_ENUM) ~~ 0

    "Modified: / 07-05-1998 / 12:23:39 / cg"
    "Created: / 11-02-2012 / 16:55:20 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

isFinal
    "return true, if the receiver is final
     (i.e. may not be subclassed)"

    ^ (accessFlags bitAnd:ACC_FINAL) ~~ 0

    "Modified: / 7.5.1998 / 12:24:21 / cg"
!

isInitialized
    "return true, if the receiver is initialized"

    ^ (accessFlags bitAnd:ACX_INITIALIZED) ~~ 0

    "Modified: / 7.5.1998 / 12:23:54 / cg"
!

isInterface
    "return true, if the receiver is an interface"

    ^ (accessFlags bitAnd:ACC_INTERFACE) ~~ 0

    "Modified: / 7.5.1998 / 12:23:39 / cg"
!

isObsolete
    "return true, if the receiver is obsolete
     Java classes are never."

    ^ (accessFlags bitAnd:ACC_OBSOLETE) ~~ 0.

    "Modified: 7.8.1997 / 19:04:28 / cg"
!

isPackagePrivate
    ^ (accessFlags bitAnd:ACC_PRIVATE | ACC_PUBLIC | ACC_PROTECTED) = 0

    "Created: / 05-07-2012 / 10:13:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

isPrivate
    "return true, if the receiver is an interface"

    ^ (accessFlags bitAnd:ACC_PRIVATE) ~~ 0

    "Modified: / 07-05-1998 / 12:23:39 / cg"
    "Created: / 11-02-2012 / 16:55:49 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

isProtected
    "return true, if the receiver is an interface"

    ^ (accessFlags bitAnd:ACC_PROTECTED) ~~ 0

    "Modified: / 07-05-1998 / 12:23:39 / cg"
    "Created: / 11-02-2012 / 16:56:00 / Jan Vrany <jan.vrany@fit.cvut.cz>"
!

isPublic
    "return true, if the receiver is public"

    ^ (accessFlags bitAnd:ACC_PUBLIC) ~~ 0

    "Modified: / 7.5.1998 / 12:22:44 / cg"
!

isSynthetic
    "return true, if the receiver is a synthetic class
     (usually a proxy generated at runtime)"

    ^ (accessFlags bitAnd:ACC_SYNTHETIC) ~~ 0

    "Created: / 13-04-2012 / 18:51:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"
! !

!JavaBehavior class methodsFor:'documentation'!

version
    ^ '$Header: /cvs/stx/stx/libjava/JavaBehavior.st,v 1.8 2013-02-25 11:15:31 vrany Exp $'
!

version_CVS
    ^ '$Header: /cvs/stx/stx/libjava/JavaBehavior.st,v 1.8 2013-02-25 11:15:31 vrany Exp $'
!

version_HG

    ^ '$Changeset: <not expanded> $'
!

version_SVN
    ^ '§Id§'
! !


JavaBehavior initialize!