"

 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

 Parts of the code written by Claus Gittinger are under following

 license:

 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.

 Parts of the code written at SWING Reasearch Group [1] are MIT licensed:

 Permission is hereby granted, free of charge, to any person

 obtaining a copy of this software and associated documentation

 files (the 'Software'), to deal in the Software without

 restriction, including without limitation the rights to use,

 copy, modify, merge, publish, distribute, sublicense, and/or sell

 copies of the Software, and to permit persons to whom the

 Software is furnished to do so, subject to the following

 conditions:

 The above copyright notice and this permission notice shall be

 included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 OTHER DEALINGS IN THE SOFTWARE.

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

     of one of the above copright owners.

"

"{ Package: 'stx:libjava' }"

Object subclass:#JavaClassRegistry

	instanceVariableNames:'classLoadersAndClasses systemClassLoader'

	classVariableNames:''

	poolDictionaries:''

	category:'Languages-Java-Support'

!

!JavaClassRegistry 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

 Parts of the code written by Claus Gittinger are under following

 license:

 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.

 Parts of the code written at SWING Reasearch Group [1] are MIT licensed:

 Permission is hereby granted, free of charge, to any person

 obtaining a copy of this software and associated documentation

 files (the 'Software'), to deal in the Software without

 restriction, including without limitation the rights to use,

 copy, modify, merge, publish, distribute, sublicense, and/or sell

 copies of the Software, and to permit persons to whom the

 Software is furnished to do so, subject to the following

 conditions:

 The above copyright notice and this permission notice shall be

 included in all copies or substantial portions of the Software.

 THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,

 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES

 OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT

 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,

 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

 FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR

 OTHER DEALINGS IN THE SOFTWARE.

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

     of one of the above copright owners.

"

! !

!JavaClassRegistry class methodsFor:'instance creation'!

new

^ self basicNew initialize.

! !

!JavaClassRegistry methodsFor:'class loaders'!

addClassLoader: aJavaClassLoader

classLoadersAndClasses at: aJavaClassLoader put: Dictionary new.

!

getClassesDefinedBy:classLoader 

    ^classLoadersAndClasses at: classLoader ifAbsent: [nil].

!

getSystemClassLoader

    systemClassLoader 

        ifNil: [

                        perform: #'getSystemClassLoader()Ljava/lang/ClassLoader;'.

        ].

    ^ systemClassLoader.

!

removeClassLoader: aJavaClassLoader 

    classLoadersAndClasses removeKey: aJavaClassLoader.

! !

!JavaClassRegistry methodsFor:'class loading'!

loadClassNamed: className 

    | result |

self assert: (className includes: $[) not.

    result := JavaClassReader readClass: className asSTXInternalJavaClassName.

     "java class or primitive array can be in result"

    result isJavaClass ifTrue: [

        self addClass: result definedBy: result classLoader.

    ].

    ^ result.

!

loadClassNamed: className using: classLoader 

    | classObject  result |

    self assert: (className includes: $[) not.

    self assert: classLoader isNil not.

    classObject := classLoader 

                perform: #'loadClass(Ljava/lang/String;)Ljava/lang/Class;'

                with: (Java as_String: (className asNiceJavaClassName)).

    result := JavaVM classForJavaClassObject: classObject.

    result isJavaClass ifFalse: [ self breakPoint: #mh. ].

    self addClass: result definedBy: result classLoader.

    ^ result.

!

loadFile: aFilename 

    "reads a class from aFilename, installs and returns it."

    | aClass |

    self breakPoint: #mh.

    aClass := JavaClassReader readFile: aFilename ignoring: Set new.

    aClass isJavaClass ifFalse:[self breakPoint:#mh].

    self addClass: aClass definedBy: nil.

    ^ aClass.

    "Created: / 15.4.1996 / 14:58:53 / cg"

    "Modified: / 12.5.1998 / 22:06:52 / cg"

!

loadStream: javaClassDataStream loader: aJavaClassLoader 

    "reads a class from aStream and returns it.

     The JavaClass is installed as global.

     If new classes are required to be loaded, aClassLoader is

     asked to do it."

    | javaClass |

    self breakPoint: #mh.

    JavaClassReader classLoaderQuerySignal answer: aJavaClassLoader

        do: [

            javaClass := JavaClassReader readStream: javaClassDataStream

                        ignoring: (Set new).

            javaClass 

                ifNil: [

                    Logger 

                        log: 'JavaClassReader was not able to read given data stream'

                        severity: #severe

                        facility: #JavaClassRegistry.

                    self breakPoint: #mh.

                    ^ nil.

                ].

            javaClass isJavaClass ifFalse: [ self breakPoint: #mh. ].

            self addClass: javaClass definedBy: aJavaClassLoader.

        ].

    ^ javaClass

! !

!JavaClassRegistry methodsFor:'classes'!

addClass: aJavaClass definedBy: classLoader 

    | classesDefinedByClassLoader |

    classesDefinedByClassLoader := classLoadersAndClasses at: classLoader

                ifAbsentPut: [ Dictionary new ].

    classesDefinedByClassLoader at: aJavaClass name put: aJavaClass.

!

getPrimitiveType: className 

    ^ (JavaDescriptor fromString: className) javaClass.

!

makeArrayOf: loadedJavaClass asDescribedBy: className 

    | arrayClass  dimensions |

    arrayClass := loadedJavaClass.

     dimensions := className occurrencesOf:$[.

    arrayClass isJavaArrayClass ifTrue: [

        "is already array (primitive arrays case, like ByteArray etc)"

       dimensions := dimensions - 1.].

    dimensions timesRepeat: [ arrayClass := arrayClass javaArrayClass. ].

    ^ arrayClass.

! !

!JavaClassRegistry methodsFor:'initialization'!

flush

    classLoadersAndClasses := Dictionary new.

    classLoadersAndClasses at: nil put: Dictionary new.

    systemClassLoader := nil.

!

initialize

    classLoadersAndClasses := Dictionary new.

    classLoadersAndClasses at: nil put: Dictionary new.

! !

!JavaClassRegistry methodsFor:'public api'!

at: className 

    ^ self at: nil at: className ifAbsent: nil.

!

at: classLoader at: className 

    ^self at: classLoader at: className ifAbsent:nil.

!

at: classLoader at: className ifAbsent: aBlock 

    "get class loaded by classLoader from registry. Don't load if not found in registry"

    className asJavaComponentClassName isJavaPrimitiveTypeDescriptor ifTrue: [   

    ^ self getPrimitiveType: className

        ].

    ^ (classLoadersAndClasses at: classLoader

        ifAbsent: [ self halt: 'cannot find given classLoader in registry' ]) 

            at: className

            ifAbsent: aBlock.

!

classForName: className

    "you should be damn sure you don't have class loader"

   ^ self classForName: className definedBy:nil.

!

classForName: className definedBy: aJavaClassLoader 

    "get class from registry, if not present, load it from classPath. Use given classLoader, if nil, it will use native one"

    | result  cleanClassName |

    cleanClassName := className asSTXInternalJavaClassName.

    cleanClassName isJavaPrimitiveTypeDescriptor ifTrue: [

        ^ self getPrimitiveType: className

    ].

    result := self 

                at: aJavaClassLoader

                at: cleanClassName

                ifAbsent: [

                    aJavaClassLoader 

                        ifNil: [ self loadClassNamed: cleanClassName ]

                        ifNotNil: [ self loadClassNamed: cleanClassName using: aJavaClassLoader ]

                ].

    (result isJavaClass and: [ result isInitialized not ]) ifTrue: [

        self breakPoint: #mh

    ].

    (className isJavaArrayDescriptor) ifTrue: [

        ^ self makeArrayOf: result asDescribedBy: className.

    ] ifFalse: [ ^ result ].

!

loadClassesIn: directory 

"load all classes (.class files, strictly speaking) found in given directory.

The argument is string containing the name of the directory.

Returns a set of loaded classes."

^ self loadClassesIn: directory matching: '*'.

"Modified: / 11-06-2011 / 13:35:08 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

loadClassesIn: directory matching: pattern 

    "load all classes (.class files, strictly speaking) found in given directory.

     The arguments are a string containing the name of the directory

     and a class name pattern. Only classes matching the pattern are loaded.

     class names are matched using String>>matches:.

     ALL CLASSES ARE INSTALLED!!

     Returns a set of loaded classes."

    | dir  dirString  className  loadedClasses |

    dir := directory asFilename asAbsoluteFilename.

    loadedClasses := Set new.

    Java addToClassPath: dir pathName.

    dir 

        recursiveDirectoryContentsAsFilenamesDo: [

            :filename | 

            (filename isRegularFile and: [ filename suffix = #class ]) ifTrue: [

                dirString := dir pathName.

                className := filename withoutSuffix pathName.

                className := className subString: dirString size + 2 to: className size.

                className := className copyReplaceAll: (Filename separator) with: $..

                (className matches: pattern) ifTrue: [

                    | loadedClass |

                    loadedClass := self loadClassNamed: className.

                    self addClass: loadedClass definedBy: nil.

                    loadedClasses add: loadedClass.

                ]

            ]

        ].

    ^ loadedClasses.

    "Modified: / 29-04-2011 / 17:43:32 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

    "Created: / 11-06-2011 / 13:34:39 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 11-06-2011 / 16:19:40 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaClassRegistry class methodsFor:'documentation'!

version_SVN

    ^ '$Id$'

! !