"

 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' }"

Object subclass:#JavaMirror

	instanceVariableNames:'klass reflection'

	classVariableNames:''

	category:'Languages-Java-Classes'

!

JavaMirror subclass:#AlienClassMirror

	instanceVariableNames:''

	classVariableNames:''

	privateIn:JavaMirror

!

JavaMirror subclass:#JavaArrayMirror

	instanceVariableNames:''

	classVariableNames:''

	privateIn:JavaMirror

!

JavaMirror subclass:#JavaClassMirror

	instanceVariableNames:''

	classVariableNames:''

	privateIn:JavaMirror

!

JavaMirror subclass:#JavaPrimitiveMirror

	instanceVariableNames:''

	classVariableNames:''

	privateIn:JavaMirror

!

!JavaMirror 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

"

    Instances of a JavaCassMirror provide unified access to

    Java reflective data (expeccially to methods, constructors and

    fields) as required by Java reflection API.

    Different classes may use different mirrors - for example,

    Smalltalk classes use a special mirror so non-Smalltalk classes

    and instances could be introspected and manipulated by standard 

    Java code.

    [author:]

        Jan Vrany <jan.vrany@fit.cvut.cz>

    [instance variables:]

        klass ........ the real class on which receiver reflects

        reflection ... now always a JavaVM reflection.

    [class variables:]

    [see also:]

"

! !

!JavaMirror class methodsFor:'instance creation'!

forClass: aClass

    ^self new setKlass: aClass.

    "Created: / 31-07-2012 / 17:54:58 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaMirror class methodsFor:'accessing'!

mirrorClassForAlienClass

    ^ AlienClassMirror

    "Created: / 31-07-2012 / 17:36:38 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

mirrorClassForJavaArray

    ^ JavaArrayMirror

    "Created: / 31-07-2012 / 18:26:57 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

mirrorClassForJavaClass

    ^ JavaClassMirror

    "Created: / 31-07-2012 / 17:36:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

mirrorClassForJavaPrimitive

    ^ JavaPrimitiveMirror

    "Created: / 31-07-2012 / 18:27:04 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaMirror methodsFor:'accessing'!

getClassLoader

    "Returns a class loader that loaded this class"

    ^self subclassResponsibility

    "Created: / 31-07-2012 / 18:25:02 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getDeclaredConstructors: publicOnly

    "Returns an java.lang.reflect.Constructor[] with all constructors 

     declared by this class. "

    ^self subclassResponsibility

    "Created: / 31-07-2012 / 18:39:52 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getDeclaredFields: publicOnly

    "Returns an java.lang.reflect.Field[] with all constructors 

     declared by this class."

    ^self subclassResponsibility

    "Created: / 22-08-2012 / 12:03:04 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getDeclaredMethods:publicOnly 

    "Returns an java.lang.reflect.Method[] with all methods 

     declared by this class."

    ^ self subclassResponsibility

    "Created: / 01-08-2012 / 11:07:20 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getGenericSignature

    "Returns Java generic signature (if a generic class) or nil"

    ^nil

    "Created: / 22-08-2012 / 11:57:49 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getInterfaces

    "Return a list if interfaces"

    ^self subclassResponsibility

    "Created: / 22-08-2012 / 11:05:13 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getModifiers

    "Return class modifiers (public/abstract/final...)"

    ^self subclassResponsibility

    "Created: / 22-08-2012 / 10:49:19 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getName

    "Returns name of the class"

    ^klass javaName

    "Created: / 22-08-2012 / 10:46:34 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getProtectionDomain

    ^nil

    "Created: / 22-08-2012 / 12:56:03 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaMirror methodsFor:'initialization'!

setKlass: aClass

    klass := aClass.

    reflection := JavaVM reflection

    "Created: / 31-07-2012 / 17:40:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaMirror methodsFor:'instance creation-java.lang.reflect.*'!

create: ctorOrMethodClass for: class method: method signature: signature modifiers: modifiers parameterTyoes: parameterClasses exceptionTypes: exceptionClasses annotations: annotations 

    "Creates a new java.lang.Constructor. Arguments:

        ctorOrMethodClass <java.lang.reflect.Constructor|java.lang.reflect.Method>

        class <Class>

        method <Method>

        signature <String>

        modifiers <SmallInteger>

        parameterClasses <Collection of Class>

        exceptionClasses <Collection of Class>

        annotations <JavaAnnotationContainer>"

    | ctorOrMethod |

    ctorOrMethod := ctorOrMethodClass new.

    ctorOrMethod

        instVarNamed: #clazz

            put: (reflection "method m" javaClassObjectForClass: class);

        instVarNamed: #slot put: method;

        instVarNamed: #modifiers put: modifiers;

        instVarNamed: #parameterTypes

            put: (reflection javaClassObjectArrayForClasses: parameterClasses);

        instVarNamed: #exceptionTypes

            put: (reflection javaClassObjectArrayForClasses: exceptionClasses);

        instVarNamed: #annotations put: annotations runtimeVisible bytes;

        instVarNamed: #parameterAnnotations

            put: annotations rawParamAnnotations.

    (method isJavaMethod and: [ method signature notNil ]) ifTrue: [

        ctorOrMethod instVarNamed: #signature

            put: (reflection javaStringObjectForString: method signature interned: true)

    ].

    ^ ctorOrMethod

    "Created: / 01-08-2012 / 10:24:32 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 01-12-2012 / 22:55:38 / Marcel Hlopko <hlopkmar@fel.cvut.cz>"

!

createConstructorFor: class method: method signature: signature modifiers: modifiers parameterTyoes: parameterClasses exceptionTypes: exceptionClasses annotations: annotations

    "Creates a new java.lang.Constructor. Arguments:

        class <Class>

        method <Method>

        signature <String>

        modifiers <SmallInteger>

        parameterClasses <Collection of Class>

        exceptionClasses <Collection of Class>

        annotations <JavaAnnotationContainer>

    "

    | ctor |

                    for: class

                 method: method

              signature: signature 

              modifiers: modifiers 

         parameterTyoes: parameterClasses 

         exceptionTypes: exceptionClasses 

            annotations: annotations.

    ^ctor

    "Created: / 01-08-2012 / 10:20:31 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 18-05-2013 / 10:55:02 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

createFieldFor: javaField 

    "given a java field, return the corresponding java.lang.Field

     instance for it."

    "

        See OpenJDK7 source:

        jdk7/hotspot/src/share/vm/runtime/reflection.cpp,

        oop Reflection::new_field"

    | field  clazz  name  slot  type  modifiers |

    clazz := reflection javaClassObjectForClass: klass.

    name := JavaVM reflection javaStringObjectForString: javaField name

                interned: true.

    slot := javaField index.

    "/ Following could be coded like (and actually it was):

    "/

    "/type := JavaVM javaClassObjectForClass: javaField typeClass.

    "/

    "/ however, for performance reasons its better to avoid ClassLoader query, so:

    type := JavaVM javaClassObjectForClass:

                ((JavaDescriptor fromString: javaField descriptor)  javaClassUsingClassLoader: javaField javaClass classLoader).

    modifiers := javaField accessFlags.

    field

        instVarNamed: #clazz put: clazz;

        instVarNamed: #name put: name;

        instVarNamed: #slot put: slot;

        instVarNamed: #type put: type;

        instVarNamed: #modifiers put: modifiers;

        yourself.

    javaField annotations 

        ifNotNil: [

            field instVarNamed: #annotations

                put: javaField annotations runtimeVisible rawAnnotations

        ].

    ^ field.

    "Created: / 22-08-2012 / 12:09:27 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 18-05-2013 / 11:51:47 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

createMethodFor: class method: method name: name signature: signature modifiers: modifiers parameterTyoes: parameterClasses returnType: returnClass exceptionTypes: exceptionClasses annotations: annotations

    "Creates a new java.lang.Constructor. Arguments:

        class <Class>

        method <Method>

        name <String>

        signature <String>

        modifiers <SmallInteger>

        parameterClasses <Collection of Class>

        returnClass <Class>

        exceptionClasses <Collection of Class>

        annotations <JavaAnnotationContainer>

    "

    | mthd |

                    for: class

                 method: method

              signature: signature 

              modifiers: modifiers 

         parameterTyoes: parameterClasses 

         exceptionTypes: exceptionClasses 

            annotations: annotations.

    mthd

        instVarNamed: #name       put: (reflection javaStringObjectForString: name interned: true);

        instVarNamed: #returnType put: (reflection javaClassObjectForClass: returnClass);

        instVarNamed: #annotationDefault put: (annotations default bytes).

    ^mthd

    "Created: / 01-08-2012 / 10:46:16 / Jan Vrany <jan.vrany@fit.cvut.cz>"

    "Modified: / 18-05-2013 / 10:55:22 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaMirror::AlienClassMirror class methodsFor:'documentation'!

documentation

"

    Specialized mirror for Smalltalk (and all other 

    non-Java classes)

    [author:]

        Jan Vrany <jan.vrany@fit.cvut.cz>

    [instance variables:]

    [class variables:]

    [see also:]

"

! !

!JavaMirror::AlienClassMirror methodsFor:'accessing'!

getClassLoader

    "Returns a class loader that loaded this class"

    ^ (JavaVM classForName:'stx.libjava.ClassLoader' definedBy: nil) instVarNamed: #scl.

    "Modified: / 18-05-2013 / 10:57:01 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getDeclaredConstructors:publicOnly

    "Returns an java.lang.reflect.Constructor[] with all constructors 

     declared by this class"

    "Here, return onlu default constructor. Later, all methods annotated

     with <jsignature: #'<init>(...)V'> wil be returned as well"

    | ctors |

    ctors := OrderedCollection new.

    klass selectorsAndMethodsDo:[:sel :mthd|

        (self isJavaConstructor: mthd selector: sel) ifTrue:[

            ctors add: (self getDeclaredConstructorFor: mthd).

        ].

    ].

    ctors isEmpty ifTrue:[

        "/If no constructor is found, fake default one...    

        ctors add: (self getDeclaredConstructorFor: (klass lookupMethodFor: #initialize)).

    ].

    "Modified: / 18-05-2013 / 10:57:10 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getDeclaredFields:publicOnly

    "Returns an java.lang.reflect.Field[] with all constructors 

     declared by this class."

    | fields |    

    fields := OrderedCollection new.

    klass instVarNames withIndexDo:[:nm :index|

        | field |

        field := JavaField new.

        field 

            setAccessFlags: JavaConstants ACC_PROTECTED;

            setClass: klass;

            setIndex: klass superclass instSize + index;

            setDescriptor: #'Ljava/lang/Object;';

            setName: nm.

        fields add: (self createFieldFor: field)

    ].

        withAll:fields

    "Modified: / 18-05-2013 / 10:57:14 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getDeclaredMethods:publicOnly 

    "Returns an java.lang.reflect.Method[] with all methods 

     declared by this class"

    | methods |

    methods := OrderedCollection new.

    klass selectorsAndMethodsDo:[:sel :mthd|

        (self isJavaMethod: mthd selector: sel) ifTrue:[

            methods add: (self getDeclaredMethodFor: mthd).

        ].

    ].

    "Modified: / 18-05-2013 / 10:57:20 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getInterfaces

    "Return a list if interfaces"

    ^ Array with: (JavaVM classForName: 'java.lang.Cloneable'  definedBy: nil)

    "Modified: / 18-05-2013 / 10:57:26 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getModifiers

    "Return class modifiers (public/abstract/final...)"

    ^ JavaConstants ACC_PUBLIC

    "Modified: / 22-08-2012 / 11:01:55 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getName

    "Returns name of the class"

    ^'SMALLTALK.' , klass name

    "Created: / 22-08-2012 / 10:47:38 / Jan Vrany <jan.vrany@fit.cvut.cz>"

! !

!JavaMirror::AlienClassMirror methodsFor:'accessing-private'!

getDeclaredConstructorFor: method

    ^ self 

        createConstructorFor: klass 

                      method: method 

                   signature: (self getSignatureForConstructor: method)

                   modifiers: JavaConstants ACC_PUBLIC 

              parameterTyoes: #() 

              exceptionTypes: #() 

                 annotations: JavaMethodAnnotationContainer new

    "Created: / 22-08-2012 / 11:36:18 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!

getDeclaredMethodFor:method

    | signature name java_lang_Object |

    signature := self getSignatureForMethod: method short: false.

    name := signature upTo: $(.

    java_lang_Object := JavaVM classNamed: 'java.lang.Object'.

    ^ self 

        createMethodFor: klass 

                      method: method 

                        name: name

                   signature: signature

                   modifiers: JavaConstants ACC_PUBLIC 

              parameterTyoes: ((1 to: method selector numArgs) collect:[:i|java_lang_Object])

                  returnType: java_lang_Object

              exceptionTypes: #() 

                 annotations: JavaMethodAnnotationContainer new

    "Created: / 22-08-2012 / 11:36:31 / Jan Vrany <jan.vrany@fit.cvut.cz>"

!