Examples of org.ow2.asm.ClassWriter

org.mvel2.asm.ClassWriter
A {@link ClassVisitor} that generates classes in bytecode form. Moreprecisely this visitor generates a byte array conforming to the Java class file format. It can be used alone, to generate a Java class "from scratch", or with one or more {@link ClassReader ClassReader} and adapter class visitorto generate a modified class from one or more existing Java classes. @author Eric Bruneton

                              final String className,
                              final Method getterMethod,
                              final Class< ? > fieldType,
                              final boolean isInterface) throws Exception {


        final ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_MAXS );


        final Class< ? > superClass = getReaderSuperClassFor( fieldType );
        buildClassHeader( superClass,
                          className,
                          cw );


        //        buildConstructor( superClass,
        //                          className,
        //                          cw );


        build3ArgConstructor( superClass,
                              className,
                              cw );


        buildGetMethod( originalClass,
                        className,
                        superClass,
                        getterMethod,
                        cw );


        cw.visitEnd();


        return cw.toByteArray();
    }

View Full Code Here

                              final String className,
                              final Method getterMethod,
                              final Class< ? > fieldType,
                              final boolean isInterface) throws Exception {


        final ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_MAXS );


        final Class< ? > superClass = getWriterSuperClassFor( fieldType );
        buildClassHeader( superClass,
                          className,
                          cw );


        build3ArgConstructor( superClass,
                              className,
                              cw );


        buildSetMethod( originalClass,
                        className,
                        superClass,
                        getterMethod,
                        fieldType,
                        cw );


        cw.visitEnd();


        return cw.toByteArray();
    }

View Full Code Here

            throw new RuntimeException( "FATAL : Trying to create an enum out of a bean class definition  " + classDef );
        }


        EnumClassDefinition edef = (EnumClassDefinition) classDef;


        ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_MAXS );


        this.buildClassHeader( cw,
                edef );


        this.buildLiterals(cw,
                edef);


        this.buildFields( cw,
                edef );




        this.buildConstructors( cw,
                edef );


        this.buildGettersAndSetters( cw,
                edef );


        this.buildEqualityMethods( cw,
                edef );


        this.buildToString( cw,
                edef );


        cw.visitEnd();


        byte[] serializedClass = cw.toByteArray();


        return serializedClass;
    }

View Full Code Here

            InvocationTargetException,
            InstantiationException,
            NoSuchFieldException {




        ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_MAXS );
        FieldVisitor fv;
        MethodVisitor mv;


        // get the method bitmask
        BitSet mask = traitRegistry.getFieldMask( trait.getName(), core.getDefinedClass().getName() );


        String name = TraitFactory.getPropertyWrapperName(trait, core);




        String internalWrapper  = BuildUtils.getInternalType( name );
        String descrCore        = Type.getDescriptor( core.getDefinedClass() );
        String internalCore     = Type.getInternalName( core.getDefinedClass() );




        
        cw.visit( V1_5, ACC_PUBLIC + ACC_SUPER,
                internalWrapper,
                Type.getDescriptor( Object.class ) + Type.getDescriptor( Map.class ) + Type.getDescriptor( MapWrapper.class ),
//                "Ljava/lang/Object;Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;Lorg/drools/factmodel/traits/MapWrapper;",
                Type.getInternalName( Object.class ),
                new String[]{ Type.getInternalName( Map.class ), Type.getInternalName( MapWrapper.class ), Type.getInternalName( Serializable.class ) } );


        cw.visitInnerClass( Type.getInternalName( Map.Entry.class ), Type.getInternalName( Map.class ), "Entry", ACC_PUBLIC + ACC_STATIC + ACC_ABSTRACT + ACC_INTERFACE );


        {
            fv = cw.visitField( 0, "object", descrCore, null, null );
            fv.visitEnd();
        }


        {
            fv = cw.visitField( 0, "map", Type.getDescriptor( Map.class ), "Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;", null );
            fv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "<init>",                                        
                    "(" + descrCore + Type.getDescriptor( Map.class ) + ")V",
                    "(" + descrCore + "Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;)V",
                    null);
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( Object.class ), "<init>", "()V" );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitFieldInsn( PUTFIELD, internalWrapper, "object", descrCore );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 2 );
            mv.visitFieldInsn( PUTFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );


            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 2 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalCore, "_setDynamicProperties", "(" + Type.getDescriptor( Map.class ) + ")V" );


            initSoftFields( mv, trait, core, internalWrapper, mask, 2 );


            mv.visitInsn( RETURN );
//            mv.visitMaxs( 2 + stackSize, 3 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();


        }




        buildSize( cw, name, core.getClassName(), trait, core, mask );


        buildIsEmpty( cw, name, core.getClassName(), trait, core, mask );


        buildGet( cw, name, core.getClassName(), trait, core, mask );


        buildPut( cw, name, core.getClassName(), trait, core, mask );


        buildClear(cw, name, core.getClassName(), trait, core, mask);


        buildRemove(cw, name, core.getClassName(), trait, core, mask);


        buildContainsKey(cw, name, core.getClassName(), trait, core, mask);


        buildContainsValue(cw, name, core.getClassName(), trait, core, mask);


        buildKeyset(cw, name, core.getClassName(), trait, core, mask);


        buildValues(cw, name, core.getClassName(), trait, core, mask);


        buildEntryset(cw, name, core.getClassName(), trait, core, mask);


        buildCommonMethods( cw, name );




        cw.visitEnd();


        return cw.toByteArray();
    }

View Full Code Here


    public byte[] buildClass( ClassDefinition classDef ) {


        init( classDef );


        ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_MAXS );




        try {
            String cName = BuildUtils.getInternalType(classDef.getClassName());
            String genericTypes = BuildUtils.getGenericTypes( classDef.getInterfaces() );
            String superType = Type.getInternalName( Object.class );
            String[] intfaces = null;
            
            if ( Object.class.getName().equals( classDef.getSuperClass() ) ) {
                String[] tmp = BuildUtils.getInternalTypes( classDef.getInterfaces() );
                intfaces = new String[ tmp.length + 1 ];
                System.arraycopy( tmp, 0, intfaces, 0, tmp.length );
                intfaces[ tmp.length ] = Type.getInternalName( Serializable.class );
            } else {
                String[] tmp = BuildUtils.getInternalTypes( classDef.getInterfaces() );
                intfaces = new String[ tmp.length + 2 ];
                System.arraycopy( tmp, 0, intfaces, 0, tmp.length );
                intfaces[ tmp.length ] = BuildUtils.getInternalType( classDef.getSuperClass() );
                intfaces[ tmp.length + 1 ] = Type.getInternalName( Serializable.class );
            }


            cw.visit( V1_5, ACC_PUBLIC + ACC_ABSTRACT + ACC_INTERFACE,
                    cName,
                    genericTypes,
                    superType,
                    intfaces );


            {
                if ( classDef.getDefinedClass() == null || classDef.getDefinedClass().getAnnotation( Trait.class ) == null ) {
                    AnnotationVisitor av0 = cw.visitAnnotation( Type.getDescriptor( Trait.class ), true);
                    List<AnnotationDefinition> annotations = classDef.getAnnotations();
                    if ( annotations != null && ! annotations.isEmpty() ) {
                        for ( Iterator<AnnotationDefinition> iter = annotations.iterator(); iter.hasNext(); ) {
                            AnnotationDefinition adef = iter.next();
                            if ( Trait.class.getName().equals( adef.getName() ) ) {
                                if ( adef.getPropertyValue( "logical" ) != null ) {
                                    av0.visit( "logical", (Boolean) adef.getPropertyValue( "logical" ) );
                                }
                                if ( adef.getPropertyValue( "impl" ) != null ) {
                                    av0.visit( "impl", Type.getType( (Class) adef.getPropertyValue( "impl" ) ) );
                                }
                                break;
                            }
                        }
                    }
                    av0.visitEnd();
                }
            }


            for ( FieldDefinition field : classDef.getFieldsDefinitions() ) {
                buildField( cw, field );
            }


            finalizeCreation( classDef );


            cw.visitEnd();
        } catch ( Exception e ) {
            e.printStackTrace();
        }


        return cw.toByteArray();
    }

View Full Code Here

            InvocationTargetException,
            InstantiationException,
            NoSuchFieldException {




        ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_MAXS );
        FieldVisitor fv;
        MethodVisitor mv;


        // get the method bitmask
        BitSet mask = traitRegistry.getFieldMask( getTrait().getName(), core.getDefinedClass().getName() );


        String name = TraitFactory.getPropertyWrapperName( getTrait(), core );
        String masterName = TraitFactory.getProxyName( getTrait(), core );




        String internalWrapper  = BuildUtils.getInternalType( name );
        String internalProxy    = BuildUtils.getInternalType( masterName );


        String descrCore        = Type.getDescriptor( core.getDefinedClass() );
        String internalCore     = Type.getInternalName( core.getDefinedClass() );
        String internalTrait    = Type.getInternalName( getTrait().getDefinedClass() );




        Class mixinClass = null;
        String mixin = null;
        Set<Method> mixinMethods = new HashSet<Method>();
        Map<String,Method> mixinGetSet = new HashMap<String,Method>();
        try {
            if ( getTrait().getDefinedClass() != null ) {
                Trait annTrait = getAnnotation( getTrait().getDefinedClass(), Trait.class );
                if ( hasImpl( annTrait ) ) {
                    mixinClass = annTrait.impl();
                    mixin = mixinClass.getSimpleName().substring(0,1).toLowerCase() + mixinClass.getSimpleName().substring(1);
                    ClassFieldInspector cfi = new ClassFieldInspector( mixinClass );


                    for ( Method m : mixinClass.getMethods() ) {
                        try {
                            getTrait().getDefinedClass().getMethod(m.getName(), m.getParameterTypes() );
                            if ( cfi.getGetterMethods().containsValue( m )
                                    || cfi.getSetterMethods().containsValue( m )) {
                                mixinGetSet.put( m.getName(), m );
                            } else {
                                mixinMethods.add( m );
                            }
                        } catch (NoSuchMethodException e) {


                        }
                    }


                }
            }
        } catch ( Exception e ) {
            e.printStackTrace();
        }






        cw.visit( V1_5, ACC_PUBLIC + ACC_SUPER,
                  internalProxy,
                  null,
                  Type.getInternalName( proxyBaseClass ),
                  new String[]{ internalTrait, Type.getInternalName( Serializable.class ) } );


        {
            fv = cw.visitField( ACC_PRIVATE + ACC_FINAL + ACC_STATIC,
                    TraitType.traitNameField, Type.getDescriptor( String.class ),
                    null, null );
            fv.visitEnd();
        }


        {
            fv = cw.visitField( ACC_PUBLIC + ACC_FINAL, "object", descrCore, null, null );
            fv.visitEnd();
        }
        {
            fv = cw.visitField( ACC_PUBLIC + ACC_FINAL, "map", Type.getDescriptor( Map.class ), "Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;", null );
            fv.visitEnd();
        }


        if ( mixinClass != null ) {
            {
                fv = cw.visitField( ACC_PRIVATE,
                        mixin,
                        BuildUtils.getTypeDescriptor( mixinClass.getName() ),
                        null, null );
                fv.visitEnd();
            }
        }


        {
            mv = cw.visitMethod( ACC_STATIC, "<clinit>", "()V", null, null );
            mv.visitCode();
            mv.visitLdcInsn( Type.getType( Type.getDescriptor( trait.getDefinedClass() ) ) );
            mv.visitMethodInsn( INVOKEVIRTUAL,
                    Type.getInternalName( Class.class ), "getName", "()" + Type.getDescriptor( String.class ) );
            mv.visitFieldInsn( PUTSTATIC,
                    internalProxy,
                    TraitType.traitNameField,
                    Type.getDescriptor( String.class ) );
            mv.visitInsn( RETURN );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "<init>", "()V", null, null );
            mv.visitCode();


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( proxyBaseClass ), "<init>", "()V" );


            mv.visitInsn( RETURN );
//            mv.visitMaxs( 1, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod( ACC_PUBLIC, "<init>",
                                             "(" + descrCore + Type.getDescriptor( Map.class ) + Type.getDescriptor( BitSet.class ) + Type.getDescriptor( BitSet.class ) + Type.getDescriptor( boolean.class  ) + ")V",
                                             "(" + descrCore + "Ljava/util/Map<Ljava/lang/String;Ljava/lang/Object;>;" + Type.getDescriptor( BitSet.class ) + Type.getDescriptor( BitSet.class ) + Type.getDescriptor( boolean.class  ) + ")V", null);
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( proxyBaseClass ), "<init>", "()V" );




            mv.visitVarInsn( ALOAD, 2 );
            Label l0 = new Label();
            mv.visitJumpInsn( IFNONNULL, l0 );
            mv.visitTypeInsn( NEW, Type.getInternalName( ExternalizableLinkedHashMap.class ) );
            mv.visitInsn( DUP );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( ExternalizableLinkedHashMap.class ), "<init>", "()V" );
            mv.visitVarInsn( ASTORE, 2  );
            mv.visitLabel( l0 );




            if ( mixinClass != null ) {
                try {
                    Class actualArg = getPossibleConstructor( mixinClass, trait.getDefinedClass() );


                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitTypeInsn( NEW, Type.getInternalName( mixinClass ) );
                    mv.visitInsn( DUP );
                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitMethodInsn( INVOKESPECIAL,
                            Type.getInternalName( mixinClass ),
                            "<init>",
                            "("+ Type.getDescriptor( actualArg ) + ")V");
                    mv.visitFieldInsn( PUTFIELD,
                            internalProxy,
                            mixin,
                            Type.getDescriptor( mixinClass ) );
                } catch ( NoSuchMethodException nsme ) {
                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitTypeInsn( NEW, Type.getInternalName( mixinClass ) );
                    mv.visitInsn( DUP );
                    mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( mixinClass ), "<init>", "()V" );
                    mv.visitFieldInsn( PUTFIELD,
                            internalProxy,
                            mixin,
                            Type.getDescriptor( mixinClass ) );
                }


            }
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "object", descrCore );


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 2 );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "map", Type.getDescriptor( Map.class ) );


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 3 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalProxy, "setTypeCode", Type.getMethodDescriptor( Type.VOID_TYPE, new Type[] { Type.getType( BitSet.class ) } ) );




            mv.visitVarInsn( ALOAD, 0 );
            mv.visitTypeInsn( NEW, internalWrapper );
            mv.visitInsn( DUP );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 2 );
            mv.visitMethodInsn( INVOKESPECIAL, internalWrapper, "<init>", "(" + descrCore + Type.getDescriptor( Map.class ) + ")V" );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "fields", Type.getDescriptor( Map.class ) );




            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalCore, "_getDynamicProperties", "()" + Type.getDescriptor( Map.class ) );
            Label l1 = new Label();
            mv.visitJumpInsn( IFNONNULL, l1 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 2 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalCore, "_setDynamicProperties", "(" + Type.getDescriptor( Map.class ) + ")V" );
            mv.visitLabel( l1 );


            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalCore, "_getTraitMap",  "()" + Type.getDescriptor( Map.class ) );
            Label l2 = new Label();
            mv.visitJumpInsn( IFNONNULL, l2 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitTypeInsn( NEW, Type.getInternalName( TraitTypeMap.class ) );
            mv.visitInsn( DUP );
            mv.visitTypeInsn( NEW, Type.getInternalName( ExternalizableLinkedHashMap.class ) );
            mv.visitInsn( DUP );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( ExternalizableLinkedHashMap.class ), "<init>", "()V" );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( TraitTypeMap.class ), "<init>", "(" + Type.getDescriptor( Map.class ) + ")V" );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalCore, "_setTraitMap", "(" + Type.getDescriptor( Map.class ) + ")V" );
            mv.visitLabel( l2 );


            // core._setBottomTypeCode()
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 4 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalCore, "_setBottomTypeCode", Type.getMethodDescriptor( Type.VOID_TYPE, new Type[] { Type.getType( BitSet.class ) } ) );


            // core.addTrait
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitLdcInsn( trait.getName() );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalCore, "addTrait",  Type.getMethodDescriptor( Type.VOID_TYPE, new Type[] { Type.getType( String.class ), Type.getType( Thing.class ) } ) );


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ILOAD, 5 );
            mv.visitMethodInsn( INVOKESPECIAL, internalProxy, "synchFields", Type.getMethodDescriptor( Type.VOID_TYPE, new Type[] { Type.BOOLEAN_TYPE } ) );


            mv.visitInsn( RETURN );
//            mv.visitMaxs( 5, 3 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "getTraitName", "()" + Type.getDescriptor( String.class ), null, null);
            mv.visitCode();
            mv.visitFieldInsn( GETSTATIC, internalProxy, TraitType.traitNameField, Type.getDescriptor( String.class ) );
            mv.visitInsn( ARETURN );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "getCore", "()" + descrCore + "", null, null );
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, internalProxy, "object", descrCore );
            mv.visitInsn( ARETURN );
//            mv.visitMaxs( 1, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "getObject", "()" + Type.getDescriptor( TraitableBean.class ), null, null);
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, internalProxy, "object", descrCore );
            mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
            mv.visitInsn( ARETURN );
//            mv.visitMaxs( 1, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "getCore", "()" + Type.getDescriptor( Object.class ), null, null );
            mv.visitCode();
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKEVIRTUAL, internalProxy, "getCore", "()" + descrCore);
            mv.visitInsn(ARETURN);
//            mv.visitMaxs( 1, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "isTop", "()Z", null, null );
            mv.visitCode();
            mv.visitInsn( Thing.class.equals( trait.getDefinedClass() ) ? ICONST_1 : ICONST_0 );
            mv.visitInsn( IRETURN );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "shed", Type.getMethodDescriptor( Type.VOID_TYPE, new Type[] {} ), null, null );
            mv.visitCode();


            if ( core.isFullTraiting() ) {
                Iterator<FieldDefinition> iter = trait.getFieldsDefinitions().iterator();
                for ( int j = 0; j < trait.getFieldsDefinitions().size(); j++ ) {
                    FieldDefinition fld = iter.next();
                    boolean hardField = ! TraitRegistry.isSoftField( fld, j, mask );
                    shedField( mv, fld, internalProxy, trait, core, hardField, j + 2 );
                }
            }


            mv.visitInsn( RETURN );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }




        {
            mv = cw.visitMethod( ACC_PUBLIC, "writeExternal", "(" + Type.getDescriptor( ObjectOutput.class ) + ")V", null, new String[] { Type.getInternalName( IOException.class ) } );
            mv.visitCode();


            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalProxy, "getObject", "()" + Type.getDescriptor( TraitableBean.class ) );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectOutput.class ), "writeObject", "(" + Type.getDescriptor( Object.class ) + ")V" );




            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, internalProxy, "map", Type.getDescriptor( Map.class ) );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectOutput.class ), "writeObject", "(" + Type.getDescriptor( Object.class ) + ")V" );


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( proxyBaseClass ), "writeExternal", "(" + Type.getDescriptor( ObjectOutput.class ) + ")V" );




            mv.visitInsn( RETURN );
//            mv.visitMaxs( 2, 2 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod( ACC_PUBLIC, "readExternal", "(" + Type.getDescriptor( ObjectInput.class )+ ")V", 
                                 null, new String[] { Type.getInternalName( IOException.class ), Type.getInternalName( ClassNotFoundException.class ) } );
            mv.visitCode();


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectInput.class ), "readObject", "()" + Type.getDescriptor( Object.class ) );
            mv.visitTypeInsn( CHECKCAST, internalCore );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "object", descrCore );




            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectInput.class ), "readObject", "()" + Type.getDescriptor( Object.class ) );
            mv.visitTypeInsn( CHECKCAST, Type.getInternalName( Map.class ) );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "map", Type.getDescriptor( Map.class ) );




            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( proxyBaseClass ), "readExternal", "(" + Type.getDescriptor( ObjectInput.class ) + ")V" );


            mv.visitInsn( RETURN );
//            mv.visitMaxs( 3, 2 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }










        int j = 0;
        for ( FieldDefinition field : trait.getFieldsDefinitions() ) {


            boolean hardField = ! TraitRegistry.isSoftField( field, j++, mask );


            if ( core.isFullTraiting() ) {
                buildLogicalGetter( cw, field, masterName, trait, core );
                if ( hardField ) {
                    buildHardSetter( cw, field, masterName, trait, core );
                } else {
                    buildSoftSetter( cw, field, masterName, trait, core );
                }
            } else {
                if ( ! hardField ) {
                    if ( ! mixinGetSet.containsKey( BuildUtils.getterName( field.getName(), field.getTypeName() ) ) ) {
                        buildSoftGetter( cw, field, masterName, trait, core );
                        buildSoftSetter( cw, field, masterName, trait, core );
                    } else {
                        //
                    }


                } else {
                    buildHardGetter( cw, field, masterName, trait, core );
                    buildHardSetter( cw, field, masterName, trait, core );
                }
            }
        }


        boolean hasKeys = false;
        for ( FactField ff : trait.getFields() ) {
            if ( ff.isKey() ) {
                hasKeys = true;
                break;
            }
        }
        if ( ! hasKeys ) {
            buildEqualityMethods( cw, masterName, core.getClassName() );
        } else {
            buildKeyedEqualityMethods( cw, trait, masterName, core.getClassName() );
        }


        if ( mixinClass != null ) {
            buildMixinMethods( cw, masterName, mixin, mixinClass, mixinMethods );
            buildMixinMethods( cw, masterName, mixin, mixinClass, mixinGetSet.values() );
        }


        buildCommonMethods( cw, masterName, core.getClassName() );


        buildExtendedMethods( cw, trait, core, mask );


        cw.visitEnd();


        return cw.toByteArray();


    }

View Full Code Here

        void write(ClassGenerator cg, ClassWriter cw);
    }


    public byte[] generateBytecode() {
        if (bytecode == null) {
            ClassWriter cw = new InternalClassWriter(classLoader, ClassWriter.COMPUTE_MAXS);
            cw.visit(version, access, getClassDescriptor(), signature, getSuperClassDescriptor(), toInteralNames(interfaces));
            for (int i = 0; i < classParts.size(); i++) { // don't use iterator to allow method visits to add more class fields and methods
                classParts.get(i).write(this, cw);
            }
            if (staticInitializer != null) {
                staticInitializer.write(this, cw);
            }
            cw.visitEnd();
            bytecode = cw.toByteArray();
            if (DUMP_GENERATED_CLASSES) {
                dumpGeneratedClass(bytecode);
            }
        }
        return bytecode;

View Full Code Here

            InvocationTargetException,
            InstantiationException,
            NoSuchFieldException {




        ClassWriter cw = new ClassWriter( ClassWriter.COMPUTE_MAXS );
        FieldVisitor fv;
        MethodVisitor mv;


        // get the method bitmask
        BitSet mask = traitRegistry.getFieldMask( getTrait().getName(), core.getDefinedClass().getName() );


        String name = TraitFactory.getPropertyWrapperName( getTrait(), core );
        String masterName = TraitFactory.getProxyName( getTrait(), core );




        String internalWrapper  = BuildUtils.getInternalType(name);
        String internalProxy    = BuildUtils.getInternalType(masterName);


        String internalCore     = Type.getInternalName(core.getDefinedClass());
        String descrCore        = Type.getDescriptor(core.getDefinedClass());
        String internalTrait    = Type.getInternalName(getTrait().getDefinedClass());




        Class mixinClass = null;
        String mixin = null;
        Set<Method> mixinMethods = new HashSet<Method>();
        Map<String,Method> mixinGetSet = new HashMap<String,Method>();
        try {
            if ( getTrait().getDefinedClass() != null ) {
                Trait annTrait = getAnnotation( getTrait().getDefinedClass(), Trait.class );
                if ( hasImpl( annTrait ) ) {
                    mixinClass = annTrait.impl();
                    mixin = mixinClass.getSimpleName().substring(0,1).toLowerCase() + mixinClass.getSimpleName().substring(1);
                    ClassFieldInspector cfi = new ClassFieldInspector( mixinClass );


                    for ( Method m : mixinClass.getMethods() ) {
                        try {
                            getTrait().getDefinedClass().getMethod(m.getName(), m.getParameterTypes() );
                            if ( cfi.getGetterMethods().containsValue( m )
                                    || cfi.getSetterMethods().containsValue( m )) {
                                mixinGetSet.put( m.getName(), m );
                            } else {
                                mixinMethods.add( m );
                            }
                        } catch ( NoSuchMethodException e ) {


                        }
                    }


                }
            }
        } catch ( Exception e ) {
            e.printStackTrace();
        }






        cw.visit( V1_5,
                  ACC_PUBLIC + ACC_SUPER,
                  internalProxy,
                  null,
                  Type.getInternalName( proxyBaseClass ),
                  new String[] { internalTrait, Type.getInternalName( Externalizable.class ) } );


        {
            fv = cw.visitField( ACC_PRIVATE + ACC_FINAL + ACC_STATIC,
                    TraitType.traitNameField, Type.getDescriptor( String.class ),
                    null, null );
            fv.visitEnd();
        }
        {
            fv = cw.visitField( ACC_PUBLIC, "object", descrCore, null, null );
            fv.visitEnd();
        }
        {
            fv = cw.visitField( ACC_PRIVATE, "store", Type.getDescriptor( TripleStore.class ), null, null );
            fv.visitEnd();
        }
        {
            fv = cw.visitField( ACC_PRIVATE, "storeId", Type.getDescriptor( String.class ), null, null);
            fv.visitEnd();
        }
        if ( mixinClass != null ) {
            {
                fv = cw.visitField( ACC_PRIVATE,
                        mixin,
                        Type.getDescriptor( mixinClass ),
                        null, null);
                fv.visitEnd();
            }
        }


        {
            mv = cw.visitMethod( ACC_STATIC, "<clinit>", "()V", null, null );
            mv.visitCode();
            mv.visitLdcInsn( Type.getType( Type.getDescriptor( trait.getDefinedClass() ) ) );
            mv.visitMethodInsn( INVOKEVIRTUAL,
                    Type.getInternalName( Class.class ), "getName", "()" + Type.getDescriptor( String.class ) );
            mv.visitFieldInsn( PUTSTATIC,
                    internalProxy,
                    TraitType.traitNameField,
                    Type.getDescriptor( String.class ) );
            mv.visitInsn( RETURN );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "<init>", "()V", null, null );
            mv.visitCode();


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( proxyBaseClass ), "<init>", "()V" );


            mv.visitInsn( RETURN );
//            mv.visitMaxs( 1, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "<init>", "(" + descrCore + Type.getDescriptor( TripleStore.class ) + Type.getDescriptor( TripleFactory.class ) + Type.getDescriptor( BitSet.class ) + Type.getDescriptor( BitSet.class ) + Type.getDescriptor( boolean.class  ) +")V", null, null );
            mv.visitCode();


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 2 );
            mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( TripleStore.class ), "getId", "()" + Type.getDescriptor( String.class ) );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "storeId", Type.getDescriptor( String.class ) );


            int size = buildConstructorCore( cw, mv, internalProxy, internalWrapper, internalCore, descrCore, mixin, mixinClass );


            initFields( mv, internalProxy );


            mv.visitInsn( RETURN );
//            mv.visitMaxs( 5 + size, 4 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod( ACC_PUBLIC, "getTraitName", "()" + Type.getDescriptor( String.class ), null, null);
            mv.visitCode();
            mv.visitFieldInsn( GETSTATIC, internalProxy, TraitType.traitNameField, Type.getDescriptor( String.class ) );
            mv.visitInsn( ARETURN );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod( ACC_PUBLIC, "getCore", "()" + descrCore + "", null, null );
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, internalProxy, "object", descrCore );
            mv.visitInsn( ARETURN );
//            mv.visitMaxs( 1, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod( ACC_PUBLIC, "getObject", "()" + Type.getDescriptor( TraitableBean.class ), null, null );
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, internalProxy, "object", descrCore );
            mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
            mv.visitInsn( ARETURN );
//            mv.visitMaxs( 1, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "setObject", "(" + Type.getDescriptor( Object.class ) + ")V", null, null);
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitTypeInsn( CHECKCAST, internalCore );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "object", descrCore );
            mv.visitInsn( RETURN );
//            mv.visitMaxs( 2, 2 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }




        {
            mv = cw.visitMethod( ACC_PUBLIC + ACC_BRIDGE + ACC_SYNTHETIC, "getCore", "()" + Type.getDescriptor( Object.class ), null, null );
            mv.visitCode();
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalProxy, "getCore", "()" + descrCore );
            mv.visitInsn( ARETURN );
//            mv.visitMaxs( 1, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "isTop", "()Z", null, null );
            mv.visitCode();
            mv.visitInsn( Thing.class.equals( trait.getDefinedClass() ) ? ICONST_1 : ICONST_0 );
            mv.visitInsn( IRETURN );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "shed", Type.getMethodDescriptor( Type.VOID_TYPE, new Type[] {} ), null, null );
            mv.visitCode();


            if ( core.isFullTraiting() ) {
                Iterator<FieldDefinition> iter = trait.getFieldsDefinitions().iterator();
                for ( int j = 0; j < trait.getFieldsDefinitions().size(); j++ ) {
                    FieldDefinition fld = iter.next();
                    boolean hardField = ! TraitRegistry.isSoftField( fld, j, mask );
                    shedField( mv, fld, internalProxy, trait, core, hardField, j + 2 );
                }
            }


            mv.visitInsn( RETURN );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


        {
            mv = cw.visitMethod( ACC_PUBLIC, "writeExternal", "(" + Type.getDescriptor( ObjectOutput.class )+ ")V", null, new String[] { Type.getInternalName( IOException.class ) } );
            mv.visitCode();


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( proxyBaseClass ), "writeExternal", "(" + Type.getDescriptor( ObjectOutput.class ) + ")V" );




            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKEVIRTUAL, internalProxy, "getObject", "()" + Type.getDescriptor( TraitableBean.class ) );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectOutput.class ), "writeObject", "(" + Type.getDescriptor( Object.class ) + ")V" );




            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, internalProxy, "storeId", Type.getDescriptor( String.class ) );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectOutput.class ), "writeObject", "(" + Type.getDescriptor( Object.class ) + ")V" );


            mv.visitVarInsn( ALOAD, 1 );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitFieldInsn( GETFIELD, internalProxy, "store", Type.getDescriptor( TripleStore.class ) );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectOutput.class ), "writeObject", "(" + Type.getDescriptor( Object.class ) + ")V" );






            mv.visitInsn( RETURN );
//            mv.visitMaxs( 2, 2 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }
        {
            mv = cw.visitMethod( ACC_PUBLIC, "readExternal", "(" + Type.getDescriptor( ObjectInput.class ) + ")V", null, 
                                 new String[] { Type.getInternalName( IOException.class ), Type.getInternalName( ClassNotFoundException.class ) } );
            mv.visitCode();


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( proxyBaseClass ), "readExternal", "(" + Type.getDescriptor( ObjectInput.class ) + ")V" );




            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectInput.class ), "readObject", "()" + Type.getDescriptor( Object.class ) );
            mv.visitTypeInsn( CHECKCAST, internalCore );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "object", descrCore );




            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectInput.class ), "readObject", "()" + Type.getDescriptor( Object.class ) );
            mv.visitTypeInsn( CHECKCAST, Type.getInternalName( String.class ) );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "storeId", Type.getDescriptor( String.class ) );


            mv.visitVarInsn( ALOAD, 0 );
            mv.visitVarInsn( ALOAD, 1 );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( ObjectInput.class ), "readObject", "()" + Type.getDescriptor( Object.class ) );
            mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TripleStore.class ) );
            mv.visitFieldInsn( PUTFIELD, internalProxy, "store", Type.getDescriptor( TripleStore.class ) );




            mv.visitInsn( RETURN );
//            mv.visitMaxs( 3, 2 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }




        buildProxyAccessors( mask, cw, masterName, core, mixinGetSet );


        boolean hasKeys = false;
        for ( FactField ff : getTrait().getFields() ) {
            if ( ff.isKey() ) {
                hasKeys = true;
                break;
            }
        }
        if ( ! hasKeys ) {
            buildEqualityMethods( cw, masterName, core.getClassName() );
        } else {
            buildKeyedEqualityMethods( cw, getTrait(), masterName, core.getClassName() );
        }


        if ( mixinClass != null ) {
            buildMixinMethods( cw, masterName, mixin, mixinClass, mixinMethods );
            buildMixinMethods( cw, masterName, mixin, mixinClass, mixinGetSet.values() );
        }




        buildCommonMethods( cw, masterName );




        buildExtendedMethods( cw, getTrait(), core, mask );




        cw.visitEnd();


        return cw.toByteArray();


    }

View Full Code Here

        void write(ClassGenerator cg, ClassWriter cw);
    }


    public byte[] generateBytecode() {
        if (bytecode == null) {
            ClassWriter cw = new InternalClassWriter(classLoader, ClassWriter.COMPUTE_MAXS);
            cw.visit(version, access, getClassDescriptor(), signature, getSuperClassDescriptor(), toInteralNames(interfaces));
            for (int i = 0; i < classParts.size(); i++) { // don't use iterator to allow method visits to add more class fields and methods
                classParts.get(i).write(this, cw);
            }
            if (staticInitializer != null) {
                staticInitializer.write(this, cw);
            }
            cw.visitEnd();
            bytecode = cw.toByteArray();
            if (DUMP_GENERATED_CLASSES) {
                dumpGeneratedClass(bytecode);
            }
        }
        return bytecode;

View Full Code Here

        void write(ClassGenerator cg, ClassWriter cw);
    }


    public byte[] generateBytecode() {
        if (bytecode == null) {
            ClassWriter cw = new InternalClassWriter(classLoader, ClassWriter.COMPUTE_MAXS);
            cw.visit(version, access, getClassDescriptor(), signature, getSuperClassDescriptor(), toInteralNames(interfaces));
            for (int i = 0; i < classParts.size(); i++) { // don't use iterator to allow method visits to add more class fields and methods
                classParts.get(i).write(this, cw);
            }
            if (staticInitializer != null) {
                staticInitializer.write(this, cw);
            }
            cw.visitEnd();
            bytecode = cw.toByteArray();
            if (DUMP_GENERATED_CLASSES) {
                dumpGeneratedClass(bytecode);
            }
        }
        return bytecode;

View Full Code Here

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