Examples of org.mvel2.asm.MethodVisitor

org.mvel2.asm.MethodVisitor
A visitor to visit a Java method. The methods of this class must be called in the following order: ( visitParameter )* [ visitAnnotationDefault ] ( visitAnnotation | visitTypeAnnotation | visitAttribute )* [ visitCode ( visitFrame | visitXInsn | visitLabel | visitInsnAnnotation | visitTryCatchBlock | visitTryCatchBlockAnnotation | visitLocalVariable | visitLocalVariableAnnotation | visitLineNumber )* visitMaxs ] visitEnd. In addition, the visitXInsn and visitLabel methods must be called in the sequential order of the bytecode instructions of the visited code, visitInsnAnnotation must be called after the annotated instruction, visitTryCatchBlock must be called before the labels passed as arguments have been visited, visitTryCatchBlockAnnotation must be called after the corresponding try catch block has been visited, and the visitLocalVariable, visitLocalVariableAnnotation and visitLineNumber methods must be called after the labels passed as arguments have been visited. @author Eric Bruneton

    private void buildCommonMethods(ClassWriter cw, String proxy, String core ) {


        String proxyType = BuildUtils.getInternalType( proxy );


        {
            MethodVisitor mv = cw.visitMethod( ACC_PUBLIC, "toString", "()" + Type.getDescriptor( String.class ), null, null );
            mv.visitCode();
            mv.visitTypeInsn( NEW, Type.getInternalName( StringBuilder.class ) );
            mv.visitInsn( DUP );
            mv.visitMethodInsn( INVOKESPECIAL, Type.getInternalName( StringBuilder.class ), "<init>", "()V" );
            mv.visitLdcInsn( "(@" + proxy + ") : " );
            mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( StringBuilder.class ), "append", 
                                "(" + Type.getDescriptor( String.class ) + ")" + Type.getDescriptor( StringBuilder.class ) );
            mv.visitVarInsn( ALOAD, 0 );
            mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, "getFields", "()" + Type.getDescriptor( Map.class ) );
            mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "entrySet", "()" + Type.getDescriptor( Set.class ) );
            mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( Object.class ), "toString", "()" + Type.getDescriptor( String.class ) );
            mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( StringBuilder.class ), "append", 
                                "(" + Type.getDescriptor( String.class ) + ")" + Type.getDescriptor( StringBuilder.class ) );
            mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( StringBuilder.class ), "toString", "()" + Type.getDescriptor( String.class ) );
            mv.visitInsn( ARETURN );
//            mv.visitMaxs( 2, 1 );
            mv.visitMaxs( 0, 0 );
            mv.visitEnd();
        }


    }

View Full Code Here




    protected void buildKeyedEquals( ClassVisitor cw,
                                     ClassDefinition classDef,
                                     String proxyType ) {
        MethodVisitor mv;
        mv = cw.visitMethod( ACC_PUBLIC, "equals", "(" + Type.getDescriptor( Object.class ) + ")Z", null, null );
        mv.visitCode();


        mv.visitVarInsn( ALOAD, 0 );
        mv.visitVarInsn( ALOAD, 1 );
        Label l0 = new Label();
        mv.visitJumpInsn( IF_ACMPNE, l0 );
        mv.visitInsn( ICONST_1 );
        mv.visitInsn( IRETURN );


        mv.visitLabel( l0 );
        mv.visitVarInsn( ALOAD, 1 );
        Label l1 = new Label();
        mv.visitJumpInsn( IFNULL, l1 );
        mv.visitVarInsn( ALOAD, 0 );
        mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( Object.class ), "getClass", "()" + Type.getDescriptor( Class.class ) );
        mv.visitVarInsn( ALOAD, 1 );
        mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( Object.class ), "getClass", "()" + Type.getDescriptor( Class.class ) );
        Label l2 = new Label();
        mv.visitJumpInsn( IF_ACMPEQ, l2 );
        mv.visitLabel( l1 );
        mv.visitInsn( ICONST_0 );
        mv.visitInsn( IRETURN );
        mv.visitLabel( l2 );




        mv.visitVarInsn( ALOAD, 1 );
        mv.visitTypeInsn( CHECKCAST, proxyType );
        mv.visitVarInsn( ASTORE, 2 );


        int x = 2;


        for ( FieldDefinition field : classDef.getFieldsDefinitions() ) {
            if ( field.isKey() ) {




                if ( ! BuildUtils.isPrimitive( field.getTypeName() ) ) {


                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    Label l11 = new Label();
                    mv.visitJumpInsn( IFNULL, l11 );
                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitVarInsn( ALOAD, 2 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitMethodInsn( INVOKEVIRTUAL, BuildUtils.getInternalType( field.getTypeName() ), "equals", "(" + Type.getDescriptor( Object.class ) + ")Z" );
                    Label l12 = new Label();
                    mv.visitJumpInsn( IFNE, l12 );
                    Label l13 = new Label();
                    mv.visitJumpInsn( GOTO, l13 );
                    mv.visitLabel( l11 );
                    mv.visitVarInsn( ALOAD, 2 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitJumpInsn( IFNULL, l12 );
                    mv.visitLabel( l13 );
                    mv.visitInsn( ICONST_0 );
                    mv.visitInsn( IRETURN );
                    mv.visitLabel( l12 );


                } else if ( "double".equals( field.getTypeName() ) ) {


                    mv.visitVarInsn( ALOAD, 2 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitMethodInsn( INVOKESTATIC, Type.getInternalName( Double.class ), "compare", "(DD)I" );
                    Label l5 = new Label();
                    mv.visitJumpInsn( IFEQ, l5 );
                    mv.visitInsn( ICONST_0 );
                    mv.visitInsn( IRETURN );
                    mv.visitLabel( l5 );


                    x = Math.max( x, 4 );


                } else if ( "float".equals( field.getTypeName() ) ) {


                    mv.visitVarInsn( ALOAD, 2 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitMethodInsn( INVOKESTATIC, Type.getInternalName( Float.class ), "compare", "(FF)I" );
                    Label l6 = new Label();
                    mv.visitJumpInsn( IFEQ, l6 );
                    mv.visitInsn( ICONST_0 );
                    mv.visitInsn( IRETURN );
                    mv.visitLabel( l6 );




                }  else if ( "long".equals( field.getTypeName() ) ) {


                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitVarInsn( ALOAD, 2 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitInsn( LCMP );
                    Label l8 = new Label();
                    mv.visitJumpInsn( IFEQ, l8 );
                    mv.visitInsn( ICONST_0 );
                    mv.visitInsn( IRETURN );
                    mv.visitLabel( l8 );


                    x = Math.max( x, 4 );


                } else {


                    mv.visitVarInsn( ALOAD, 0 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    mv.visitVarInsn( ALOAD, 2 );
                    mv.visitMethodInsn( INVOKEVIRTUAL, proxyType, BuildUtils.getterName( field.getName(), field.getTypeName() ), 
                                        "()" + Type.getDescriptor( field.getType() ) );
                    Label l4 = new Label();
                    mv.visitJumpInsn( IF_ICMPEQ, l4 );
                    mv.visitInsn( ICONST_0 );
                    mv.visitInsn( IRETURN );
                    mv.visitLabel( l4 );


                }
            }
        }


        mv.visitInsn( ICONST_1 );
        mv.visitInsn( IRETURN );
//        mv.visitMaxs( x, 3 );
        mv.visitMaxs( 0, 0 );
        mv.visitEnd();
    }

View Full Code Here

            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( ClassGenerator.JAVA_VERSION, 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 );

View Full Code Here

    }


    private void buildRemove( ClassWriter cw, String wrapperName, String coreName, ClassDefinition trait, ClassDefinition core, BitSet mask ) {
        String internalWrapper = BuildUtils.getInternalType( wrapperName );


        MethodVisitor mv = cw.visitMethod( ACC_PUBLIC, "remove", "(" + Type.getDescriptor( Object.class ) +")" + Type.getDescriptor( Object.class ), null, null );
        mv.visitCode();


        for ( FieldDefinition field : core.getFieldsDefinitions() ) {
            invokeRemove( mv, wrapperName, core, field.getName(), field );
        }




        int j = 0;
        int stack = 0;
        for ( FieldDefinition field : trait.getFieldsDefinitions() ) {
            boolean isSoftField = TraitRegistry.isSoftField( field, j++, mask );
            if ( isSoftField ) {
                mv.visitLdcInsn( field.getName() );
                mv.visitVarInsn( ALOAD, 1 );
                mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( String.class ), "equals", "(" + Type.getDescriptor( Object.class ) + ")Z" );
                Label l2 = new Label();
                mv.visitJumpInsn( IFEQ, l2 );
                mv.visitVarInsn( ALOAD, 0 );
                mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
                mv.visitLdcInsn( field.getName() );
                mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "get", "(" + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ) );
                mv.visitVarInsn( ASTORE, 2 );
                mv.visitVarInsn( ALOAD, 0 );
                mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
                mv.visitLdcInsn( field.getName() );
                mv.visitInsn( BuildUtils.zero( field.getTypeName() ) );
                if ( BuildUtils.isPrimitive( field.getTypeName() ) ) {
                    TraitFactory.valueOf( mv, field.getTypeName() );
                }
                mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "put", 
                                    "(" + Type.getDescriptor( Object.class ) + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ) );
                mv.visitInsn( POP );
                mv.visitVarInsn( ALOAD, 2 );
                mv.visitInsn( ARETURN );
                mv.visitLabel( l2 );
            }
        }




        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitVarInsn( ALOAD, 1 );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "remove", "(" + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ) );
        mv.visitVarInsn( ASTORE, 2 );
        mv.visitVarInsn( ALOAD, 2 );
        mv.visitInsn( ARETURN );
//        mv.visitMaxs( 4 + stack, 3 );
        mv.visitMaxs( 0, 0 );
        mv.visitEnd();
    }

View Full Code Here

    private void buildHardGetter( ClassVisitor cw, FieldDefinition field, String masterName, ClassDefinition proxy, ClassDefinition core, String getterName, boolean protect ) {
        String fieldName = field.getName();
        Class fieldType = field.getType();




        MethodVisitor mv = cw.visitMethod( protect ? ACC_PROTECTED : ACC_PUBLIC,
                getterName,
                "()" + Type.getDescriptor( field.getType() ),
                null,
                null);
        mv.visitCode();


        TraitFactory.invokeExtractor( mv, masterName, proxy, core, field );


        if ( ! BuildUtils.isPrimitive( field.getTypeName() ) ) {
            mv.visitTypeInsn( CHECKCAST, Type.getInternalName( fieldType ) );
        }


        mv.visitInsn( BuildUtils.returnType ( field.getTypeName() ) );
//        mv.visitMaxs( 2, 1 );
        mv.visitMaxs( 0, 0 );
        mv.visitEnd();


    }

View Full Code Here

    private void buildHardSetter( ClassVisitor cw, FieldDefinition field, String masterName, ClassDefinition trait, ClassDefinition core ) {
        buildHardSetter( cw, field, masterName, trait, core, BuildUtils.setterName( field.getName(), field.getTypeName() ), false  );
    }


    private void buildHardSetter( ClassVisitor cw, FieldDefinition field, String masterName, ClassDefinition trait, ClassDefinition core, String setterName, boolean protect ) {
        MethodVisitor mv = cw.visitMethod( protect ? ACC_PROTECTED : ACC_PUBLIC,
                                           setterName,
                                           "(" + Type.getDescriptor( field.getType() ) + ")V",
                                           null,
                                           null );
        mv.visitCode();




        if ( core.isFullTraiting() ) {
            // The trait field update will be done by the core setter. However, types may mismatch here
            FieldDefinition hardField = core.getFieldByAlias( field.resolveAlias() );
            if ( ! field.getType().isPrimitive() && ! field.getTypeName().equals( hardField.getTypeName() ) ) {
                boolean isCoreTrait = hardField.getType().getAnnotation( Trait.class ) != null;
                boolean isTraitTrait = field.getType().getAnnotation( Trait.class ) != null;


                Label l0 = new Label();
                mv.visitVarInsn( ALOAD, 1 );
                mv.visitJumpInsn( IFNULL, l0 );
                if ( isCoreTrait && ! isTraitTrait ) {
                    mv.visitVarInsn( ALOAD, 1 );
                    mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
                    mv.visitLdcInsn( hardField.getTypeName() );
                    mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( TraitableBean.class ), "getTrait", Type.getMethodDescriptor( Type.getType( Thing.class ), new Type[] { Type.getType( String.class ) } ) );
                    mv.visitVarInsn( ASTORE, 1 );
                } else if ( ! isCoreTrait && isTraitTrait ) {
                    mv.visitVarInsn( ALOAD, 1 );
                    mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitProxy.class ) );
                    mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( TraitProxy.class ), "getObject", Type.getMethodDescriptor( Type.getType( TraitableBean.class ), new Type[]{ } ) );
                    mv.visitVarInsn( ASTORE, 1 );
                } else if ( isCoreTrait && isTraitTrait ) {
                    mv.visitVarInsn( ALOAD, 1 );
                    mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitProxy.class ) );
                    mv.visitMethodInsn( INVOKEVIRTUAL, Type.getInternalName( TraitProxy.class ), "getObject", Type.getMethodDescriptor( Type.getType( TraitableBean.class ), new Type[] {} ) );
                    mv.visitTypeInsn( CHECKCAST, Type.getInternalName( TraitableBean.class ) );
                    mv.visitLdcInsn( hardField.getTypeName() );
                    mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( TraitableBean.class ), "getTrait", Type.getMethodDescriptor( Type.getType( Thing.class ), new Type[] { Type.getType( String.class ) } ) );
                    mv.visitVarInsn( ASTORE, 1 );
                } else {
                    // handled by normal inheritance, exceptions should have been thrown
                    if ( ! hardField.getType().isAssignableFrom( field.getType() ) ) {
                        mv.visitInsn( RETURN );
                    }
                }
                Label l1 = new Label();
                mv.visitJumpInsn(GOTO, l1);


                mv.visitLabel( l0 );
                    mv.visitInsn( ACONST_NULL );
                    mv.visitVarInsn( ASTORE, 1 );
                mv.visitLabel( l1 );
            } else if ( field.getType().isPrimitive() ) {
                if ( ! hardField.getType().equals( field.getType() ) ) {
                    mv.visitInsn( RETURN );
                }
            }
        }


        TraitFactory.invokeInjector( mv, masterName, trait, core, field, false, 1 );


        mv.visitInsn( RETURN );


        mv.visitMaxs( 0, 0 );
        mv.visitEnd();


    }

View Full Code Here

    private void buildSoftSetter( ClassVisitor cw, FieldDefinition field, String proxy, ClassDefinition trait, ClassDefinition core, String setterName, boolean protect ) {
        String fieldName = field.getName();
        String type = field.getTypeName();




        MethodVisitor mv = cw.visitMethod( protect ? ACC_PROTECTED : ACC_PUBLIC,
                                           setterName,
                                           "(" + BuildUtils.getTypeDescriptor( type ) + ")V",
                                           null,
                                           null );
        mv.visitCode();


        if ( core.isFullTraiting() ) {
            logicalSetter( mv, field, proxy, this.trait, core, true );
        }


        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxy ), "map", Type.getDescriptor( Map.class ) );
        mv.visitLdcInsn( field.resolveAlias() );
        mv.visitVarInsn( BuildUtils.varType( type ), 1 );
        if ( BuildUtils.isPrimitive( type ) ) {
            TraitFactory.valueOf( mv, type );
        }
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "put", 
                            "(" + Type.getDescriptor( Object.class ) + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ) );
        mv.visitInsn( POP );
        mv.visitInsn( RETURN );


        mv.visitMaxs( 0, 0 );
        mv.visitEnd();


    }

View Full Code Here


    private void buildSoftGetter( ClassVisitor cw, FieldDefinition field, String proxy, ClassDefinition trait, ClassDefinition core, String getterName, boolean protect ) {
        String fieldName = field.getName();
        String type = field.getTypeName();


        MethodVisitor mv = cw.visitMethod( protect ? ACC_PROTECTED : ACC_PUBLIC,
                                           getterName,
                                           "()"+ BuildUtils.getTypeDescriptor( type ),
                                           null,
                                           null );
        mv.visitCode();
        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( proxy ), "map", Type.getDescriptor( Map.class ) );
        mv.visitLdcInsn( field.resolveAlias() );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "get", "(" + Type.getDescriptor( Object.class ) + ")" + Type.getDescriptor( Object.class ) );


        String actualType = BuildUtils.isPrimitive( type ) ? BuildUtils.box( type ) : type;


            mv.visitVarInsn( ASTORE, 1 );
            mv.visitVarInsn( ALOAD, 1 );
            Label l0 = new Label();
            mv.visitJumpInsn( IFNULL, l0 );
            mv.visitVarInsn( ALOAD, 1 );


            mv.visitTypeInsn( INSTANCEOF, BuildUtils.getInternalType( actualType ) );
            mv.visitJumpInsn( IFEQ, l0 );
            mv.visitVarInsn( ALOAD, 1 );


            mv.visitTypeInsn( CHECKCAST, BuildUtils.getInternalType( actualType ) );


        if ( BuildUtils.isPrimitive( type ) ) {
            TraitFactory.primitiveValue( mv, type );
            mv.visitInsn( BuildUtils.returnType( type ) );
            mv.visitLabel( l0 );
            mv.visitInsn( BuildUtils.zero( type ) );
            mv.visitInsn( BuildUtils.returnType( type ) );
        } else {
            mv.visitInsn( ARETURN );
            mv.visitLabel( l0 );
            mv.visitInsn( ACONST_NULL );
            mv.visitInsn( ARETURN );
        }


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

View Full Code Here


    private void buildMixinMethods( ClassWriter cw, String wrapperName, String mixin, Class mixinClass, Collection<Method> mixinMethods ) {
        for ( Method method : mixinMethods ) {
            String signature = TraitFactory.buildSignature( method );
            {
                MethodVisitor mv = cw.visitMethod( ACC_PUBLIC,
                        method.getName(),
                        signature,
                        null,
                        null );
                mv.visitCode();
                mv.visitVarInsn( ALOAD, 0 );
                mv.visitFieldInsn( GETFIELD, BuildUtils.getInternalType( wrapperName ), mixin, Type.getDescriptor( mixinClass ) );
                int j = 1;
                for ( Class arg : method.getParameterTypes() ) {
                    mv.visitVarInsn( BuildUtils.varType( arg.getName() ), j++ );
                }
                mv.visitMethodInsn( INVOKEVIRTUAL,
                        Type.getInternalName( mixinClass ),
                        method.getName(),
                        signature );


                mv.visitInsn( BuildUtils.returnType( method.getReturnType().getName() ) );
                int stack = TraitFactory.getStackSize( method ) ;
//                mv.visitMaxs( stack, stack );
                mv.visitMaxs( 0, 0 );
                mv.visitEnd();
            }
        }


    }

View Full Code Here

    private void buildClear( ClassWriter cw, String wrapperName, String coreName, ClassDefinition trait, ClassDefinition core, BitSet mask ) {
        String internalWrapper = BuildUtils.getInternalType( wrapperName );


        boolean hasPrimitiveFields = false;
        boolean hasObjectFields = false;
        MethodVisitor mv = cw.visitMethod( ACC_PUBLIC, "clear", "()V", null, null );
        mv.visitCode();


        for ( FieldDefinition field : core.getFieldsDefinitions() ) {
            if ( field.isKey() ) continue;
            if ( BuildUtils.isPrimitive( field.getTypeName() ) ) {
                hasPrimitiveFields = true;
            } else {
                hasObjectFields = true;
            }
            TraitFactory.invokeInjector( mv, wrapperName, trait, core, field, true, 1 );
        }


        int stack = 2;
        if ( hasPrimitiveFields ) {
            stack++;
        }
        if ( hasObjectFields ) {
            stack++;
        }


        mv.visitVarInsn( ALOAD, 0 );
        mv.visitFieldInsn( GETFIELD, internalWrapper, "map", Type.getDescriptor( Map.class ) );
        mv.visitMethodInsn( INVOKEINTERFACE, Type.getInternalName( Map.class ), "clear", "()V" );


        int num = initSoftFields( mv, trait, core, internalWrapper, mask, 0 );
        stack += num;




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


    }

View Full Code Here

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