"
 COPYRIGHT (c) 1996-2011 by Claus Gittinger
 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.

 (*) extensions, changes and fixes for java1.1 compatibility.
     For a list of changes, see a list of diffs against the last stable version before 2011-08.
"
"{ Package: 'stx:libjava' }"

Object subclass:#JavaObject
	instanceVariableNames:''
	classVariableNames:''
	poolDictionaries:''
	category:'Languages-Java-Classes'
!

!JavaObject class methodsFor:'documentation'!

copyright
"
 COPYRIGHT (c) 1996-2011 by Claus Gittinger
 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.

 (*) extensions, changes and fixes for java1.1 compatibility.
     For a list of changes, see a list of diffs against the last stable version before 2011-08.

"
! !

!JavaObject class methodsFor:'misc'!

resolveClassRefs
!

resolveClassRefsIgnoring:setOfClasses
! !

!JavaObject class methodsFor:'smalltalk interface'!

convertJavaObject:val signature:retValSignature
^ val.

    retValSignature = 'void' ifTrue:[
	^ #void
    ].
    retValSignature = 'boolean' ifTrue:[
	val == 0 ifTrue:[^ false].
	^ true
    ].
    retValSignature = 'int' ifTrue:[
	val isInteger ifFalse:[
	    self halt
	].
	^ val
    ].
    retValSignature = 'char[]' ifTrue:[
	"/ these are ST-strings
	^ val
    ].

    retValSignature = 'char' ifTrue:[
	"/ these are ST-characters
	val isInteger ifTrue:[
	    ^ Character value:val
	].
	self halt.
	^ val
    ].

    retValSignature = 'Object' ifTrue:[
	^ val
    ].

    retValSignature = 'String' ifTrue:[
	^ Java as_ST_String:val
    ].

    'no conversion for: ' print. val class name print. ' to: ' print. retValSignature printNL.
    ^ val.

    "Modified: 8.8.1997 / 12:07:23 / cg"
!

javaStringFrom:aString
    "hard-coding internas of java.lang.String here is bad ..."

    self halt.
    ^ Java as_String:aString

    "Modified: 7.8.1997 / 21:17:32 / cg"
!

stringFromJavaString:aJavaString
    "hard-coding internas of java.lang.String here is bad ..."

    self halt.
    ^ Java as_ST_String:aJavaString

    "Modified: 8.8.1997 / 12:07:29 / cg"
! !

!JavaObject methodsFor:'initialization'!

initializeToZero
    |sz|

    sz := self class instSize.
    1 to:sz do:[:i |
	self instVarAt:i put:0
    ]
! !

!JavaObject methodsFor:'message sending'!

doesNotUnderstand:aMessage
    "as a courtesy to the smalltalker, try to map methods"

    |args numArgs javaMethod sel retVal m|

    args := aMessage arguments.
    numArgs := args size.
    sel := aMessage selector.

    javaMethod := JavaClass lookupMethod:sel numArgs:numArgs in:self class static:false.
    javaMethod notNil ifTrue:[
        args notNil ifTrue:[
            args := JavaClass 
                        convertArgsToJava:args 
                        asSpecifiedIn:(javaMethod argSignature)
                        numArgs:numArgs.
        ].
        javaMethod isWrapped ifTrue:[
            m := javaMethod originalMethod
        ] ifFalse:[
            m := javaMethod
        ].
        retVal := javaMethod 
            valueWithReceiver:self 
            arguments:args
            selector:m selector 
            search:m javaClass
            sender:nil.

        ^ JavaClass convertToSmalltalk:retVal type:(m returnType).
    ].
    ^ super doesNotUnderstand:aMessage

    "Modified: / 16.11.1998 / 16:50:56 / cg"
! !

!JavaObject methodsFor:'printing & storing'!

displayString
    |myClass javaString|

    myClass := self class.
    myClass == Java java_lang_String ifTrue:[
        ^ '''' , (Java as_ST_String:self) , ''''
    ].
    myClass == (Java at:'java.lang.Class') ifTrue:[
        ^ super displayString , '(' 
            , (JavaVM reflection classForJavaClassObject:self) displayString , ')'
    ].
    myClass == (Java at:'java.lang.reflect.Method') ifTrue:[
        ^ super displayString , '(' 
            , (JavaVM methodForJavaMethodObject:self) displayString , ')'
    ].
    Object errorSignal 
        handle:[:ex | javaString := ''.]
        do:[
            javaString := Java 
                        as_ST_String:(self perform:#'toString()Ljava/lang/String;').
        ].
    ^ super displayString , ' (' , javaString , ')'.

    "Modified: / 04-11-1998 / 18:35:00 / cg"
    "Modified: / 28-01-2011 / 15:10:05 / Marcel Hlopko <hlopik@gmail.com>"
!

javaDisplayString
    Object errorSignal handle:[:ex |
        ex return.
    ] do:[
        ^ Java as_ST_String:(self perform:#toString).
    ].

    ^ super displayString.

    "Created: / 7.4.1997 / 17:38:13 / cg"
    "Modified: / 4.11.1998 / 21:07:19 / cg"
!

printString
    |myClass javaString|

    myClass := self class.
    myClass == Java java_lang_String ifTrue:[
        ^ '''' , (Java as_ST_String:self) , ''''
    ].
    myClass == (Java at:'java.lang.Class') ifTrue:[
        ^ super printString , '(' 
            , (JavaVM reflection classForJavaClassObject:self) displayString , ')'
    ].
    myClass == (Java at:'java.lang.reflect.Method') ifTrue:[
        ^ super printString , '(' 
            , (JavaVM methodForJavaMethodObject:self) displayString , ')'
    ].
    Object errorSignal 
        handle:[:ex | javaString := ''.]
        do:[
            javaString := Java 
                        as_ST_String:(self perform:#'toString()Ljava/lang/String;').
        ].
    ^ super printString , ' (' , javaString , ')'.

    "Modified: / 04-11-1998 / 18:35:00 / cg"
    "Created: / 20-12-2010 / 23:10:51 / Jan Vrany <jan.vrany@fit.cvut.cz>"
    "Modified: / 28-01-2011 / 15:10:17 / Marcel Hlopko <hlopik@gmail.com>"
! !

!JavaObject methodsFor:'queries'!

isJavaClassRef
    ^ false

    "Created: / 9.11.1999 / 17:13:37 / cg"
!

isJavaMethodRef
    ^ false

    "Created: / 9.11.1999 / 15:43:21 / cg"
!

isJavaObject
    ^ true

    "Created: 26.3.1997 / 13:34:17 / cg"
! !

!JavaObject methodsFor:'smalltalk interface'!

lookupMethod:selector numArgs:nargs
    "lookup a method"

    |method cls sel|

    sel := selector.
    (sel includes:$:) ifTrue:[
	sel := sel copyTo:(sel indexOf:$:)-1    
    ].

    sel := sel asSymbolIfInterned.
    sel notNil ifTrue:[
	cls := self class.
	[cls notNil and:[cls ~~ JavaObject]] whileTrue:[
	    cls methodDictionary keysAndValuesDo:[:jSel :aMethod |
		(jSel == sel ) ifTrue:[
		    ^ aMethod
		]
	    ].
	    cls methodDictionary keysAndValuesDo:[:jSel :aMethod |
		(aMethod name = sel 
		or:[aMethod signatureNameWithoutReturnType = sel]) ifTrue:[
		    aMethod numArgs == nargs ifTrue:[
			^ aMethod
		    ]
		]
	    ].
	    cls := cls superclass.
	].
    ].

    ^ nil

    "
     |stack|

     stack := (Java at:'java.util.Stack') basicNew.
     stack lookupMethod:#'<init>' numArgs:0. 
    "
    "
     |stack|

     stack := (Java at:'java.util.Stack') new.
     stack lookupMethod:#isEmpty numArgs:0. 
    "
    "
     |frame|

     frame := (Java at:'java.awt.Frame') new.
     frame lookupMethod:#'<init> (String)' numArgs:1. 
    "

    "Modified: 22.3.1997 / 00:56:54 / cg"
! !

!JavaObject class methodsFor:'documentation'!

version
    ^ '$Header: /cvs/stx/stx/libjava/JavaObject.st,v 1.56 2011-11-24 11:53:56 cg Exp $'
!

version_CVS
    ^ '$Header: /cvs/stx/stx/libjava/JavaObject.st,v 1.56 2011-11-24 11:53:56 cg Exp $'
!

version_SVN
    ^ '§Id: JavaObject.st,v 1.54 2011/08/18 18:42:48 vrany Exp §'
! !