Package org.drools.asm

Examples of org.drools.asm.Label

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                                                 null,
                                                 exceptions );
        mv.visitCode();

        // if ( ! _fieldIsSet ) {
        final Label l0 = new Label();
        mv.visitLabel( l0 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitFieldInsn( Opcodes.GETFIELD,
                           className,
                           fieldFlag,
                           Type.BOOLEAN_TYPE.getDescriptor() );
        final Label l1 = new Label();
        mv.visitJumpInsn( Opcodes.IFNE,
                          l1 );

        //     __fieldIsSet = true;
        final Label l3 = new Label();
        mv.visitLabel( l3 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitInsn( Opcodes.ICONST_1 );
        mv.visitFieldInsn( Opcodes.PUTFIELD,
                           className,
                           fieldFlag,
                           Type.BOOLEAN_TYPE.getDescriptor() );

        if ( Map.class.isAssignableFrom( fieldType ) || Collection.class.isAssignableFrom( fieldType ) || fieldType.isArray() ) {

            // FieldType aux = this.delegate.getField();
            Label l01 = new Label();
            mv.visitLabel( l01 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitFieldInsn( Opcodes.GETFIELD,
                               className,
                               DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );
            if ( clazz.isInterface() ) {
                mv.visitMethodInsn( Opcodes.INVOKEINTERFACE,
                                    Type.getInternalName( clazz ),
                                    method.getName(),
                                    Type.getMethodDescriptor( method ) );
            } else {
                mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                                    Type.getInternalName( clazz ),
                                    method.getName(),
                                    Type.getMethodDescriptor( method ) );
            }
            mv.visitVarInsn( Opcodes.ASTORE,
                             1 );

            // this.field = (FieldType) ShadoProxyUtils.clone( aux );
            Label l11 = new Label();
            mv.visitLabel( l11 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitMethodInsn( Opcodes.INVOKESTATIC,
                                Type.getInternalName( ShadowProxyUtils.class ),
                                "cloneObject",
                                "(Ljava/lang/Object;)Ljava/lang/Object;" );
            mv.visitTypeInsn( Opcodes.CHECKCAST,
                              Type.getInternalName( fieldType ) );
            mv.visitFieldInsn( Opcodes.PUTFIELD,
                               className,
                               fieldName,
                               Type.getDescriptor( fieldType ) );

        } else {
            //     __field = this.delegate.method();
            final Label l2 = new Label();
            mv.visitLabel( l2 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitFieldInsn( Opcodes.GETFIELD,
                               className,
                               ShadowProxyFactory.DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );
            if ( clazz.isInterface() ) {
                mv.visitMethodInsn( Opcodes.INVOKEINTERFACE,
                                    Type.getInternalName( clazz ),
                                    method.getName(),
                                    Type.getMethodDescriptor( method ) );
            } else {
                mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                                    Type.getInternalName( clazz ),
                                    method.getName(),
                                    Type.getMethodDescriptor( method ) );
            }
            mv.visitFieldInsn( Opcodes.PUTFIELD,
                               className,
                               fieldName,
                               Type.getDescriptor( fieldType ) );

        }

        // }
        // return __field;
        mv.visitLabel( l1 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitFieldInsn( Opcodes.GETFIELD,
                           className,
                           fieldName,
                           Type.getDescriptor( fieldType ) );
        mv.visitInsn( Type.getType( fieldType ).getOpcode( Opcodes.IRETURN ) );

        // local variables table
        final Label l4 = new Label();
        mv.visitLabel( l4 );
        mv.visitLocalVariable( "this",
                               "L" + className + ";",
                               null,
                               l0,
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                                                 null,
                                                 exceptions );
        mv.visitCode();

        // return __field;
        final Label l0 = new Label();
        mv.visitLabel( l0 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitFieldInsn( Opcodes.GETFIELD,
                           className,
                           fieldName,
                           Type.getDescriptor( fieldType ) );
        mv.visitInsn( Type.getType( fieldType ).getOpcode( Opcodes.IRETURN ) );

        // local variables table
        final Label l4 = new Label();
        mv.visitLabel( l4 );
        mv.visitLocalVariable( "this",
                               "L" + className + ";",
                               null,
                               l0,
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                                                 Type.getMethodDescriptor( Type.VOID_TYPE,
                                                                           new Type[]{} ),
                                                 null,
                                                 null );
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel( l0 );
        for ( final Iterator it = fieldTypes.entrySet().iterator(); it.hasNext(); ) {
            final Map.Entry entry = (Map.Entry) it.next();
            final String fieldName = (String) entry.getKey();
            final String fieldFlag = fieldName + ShadowProxyFactory.FIELD_SET_FLAG;
            final Class fieldType = ((Method) entry.getValue()).getReturnType();
            final Label l1 = new Label();
            mv.visitLabel( l1 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            if ( fieldType.isPrimitive() ) {
                if ( fieldType.equals( Long.TYPE ) ) {
                    mv.visitInsn( Opcodes.LCONST_0 );
                } else if ( fieldType.equals( Double.TYPE ) ) {
                    mv.visitInsn( Opcodes.DCONST_0 );
                } else if ( fieldType.equals( Float.TYPE ) ) {
                    mv.visitInsn( Opcodes.FCONST_0 );
                } else {
                    mv.visitInsn( Opcodes.ICONST_0 );
                }
            } else {
                mv.visitInsn( Opcodes.ACONST_NULL );
            }
            mv.visitFieldInsn( Opcodes.PUTFIELD,
                               className,
                               fieldName,
                               Type.getDescriptor( fieldType ) );
            final Label l2 = new Label();
            mv.visitLabel( l2 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitInsn( Opcodes.ICONST_0 );
            mv.visitFieldInsn( Opcodes.PUTFIELD,
                               className,
                               fieldFlag,
                               Type.BOOLEAN_TYPE.getDescriptor() );
        }

        //    this.__hashCache = 0;
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitInsn( Opcodes.ICONST_0 );
        mv.visitFieldInsn( Opcodes.PUTFIELD,
                           className,
                           ShadowProxyFactory.HASHCACHE_FIELD_NAME,
                           Type.getDescriptor( int.class ) );

        final Label l4 = new Label();
        mv.visitLabel( l4 );
        mv.visitInsn( Opcodes.RETURN );
        final Label l5 = new Label();
        mv.visitLabel( l5 );
        mv.visitLocalVariable( "this",
                               "L" + className + ";",
                               null,
                               l0,
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                                                 setShadowed.getName(),
                                                 Type.getMethodDescriptor( setShadowed ),
                                                 null,
                                                 null );
        mv.visitCode();
        Label l0 = new Label();
        mv.visitLabel( l0 );
        // this.delegate = (<clazz>) object;
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         1 );
        mv.visitTypeInsn( Opcodes.CHECKCAST,
                          Type.getInternalName( clazz ) );
        mv.visitFieldInsn( Opcodes.PUTFIELD,
                           className,
                           DELEGATE_FIELD_NAME,
                           Type.getDescriptor( clazz ) );
        if ( Collection.class.isAssignableFrom( clazz ) || Map.class.isAssignableFrom( clazz ) ) {
            Label l1 = new Label();
            mv.visitLabel( l1 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                                className,
                                UPDATE_PROXY,
                                Type.getMethodDescriptor( Type.VOID_TYPE,
                                                          new Type[0] ) );
        }
        Label l2 = new Label();
        mv.visitLabel( l2 );
        mv.visitInsn( Opcodes.RETURN );
        Label l3 = new Label();
        mv.visitLabel( l3 );
        mv.visitLocalVariable( "this",
                               "L" + className + ";",
                               null,
                               l0,
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                }
            }

            offset += offsetDelta;

            final Label offsetLabel = getLabel( offset,
                                                labels );

            frame = new StackMapFrame( offsetLabel,
                                       locals,
                                       stack );
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                                                 Type.getMethodDescriptor( Type.VOID_TYPE,
                                                                           new Type[]{} ),
                                                 null,
                                                 null );
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel( l0 );
        // this.clear();
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                            className,
                            "clear",
                            Type.getMethodDescriptor( Type.VOID_TYPE,
                                                      new Type[0] ) );
        Label l1 = new Label();
        mv.visitLabel( l1 );
        // this.addAll( this.delegate );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitFieldInsn( Opcodes.GETFIELD,
                           className,
                           DELEGATE_FIELD_NAME,
                           Type.getDescriptor( clazz ) );
        mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                            className,
                            "addAll",
                            Type.getMethodDescriptor( Type.BOOLEAN_TYPE,
                                                      new Type[]{Type.getType( Collection.class )} ) );
        mv.visitInsn( Opcodes.POP );
        Label l2 = new Label();
        mv.visitLabel( l2 );
        mv.visitInsn( Opcodes.RETURN );
        Label l3 = new Label();
        mv.visitLabel( l3 );
        mv.visitLocalVariable( "this",
                               "L" + className + ";",
                               null,
                               l0,
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        return off;
    }

    private Label getLabel(final int offset,
                           final Label[] labels) {
        final Label l = labels[offset];
        if ( l != null ) {
            return l;
        }
        return labels[offset] = new Label();
    }
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                                                 Type.getMethodDescriptor( Type.VOID_TYPE,
                                                                           new Type[]{} ),
                                                 null,
                                                 null );
        mv.visitCode();
        final Label l0 = new Label();
        mv.visitLabel( l0 );
        // this.clear();
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                            className,
                            "clear",
                            Type.getMethodDescriptor( Type.VOID_TYPE,
                                                      new Type[0] ) );
        Label l1 = new Label();
        mv.visitLabel( l1 );
        // this.putAll( this.delegate );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitFieldInsn( Opcodes.GETFIELD,
                           className,
                           DELEGATE_FIELD_NAME,
                           Type.getDescriptor( clazz ) );
        mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                            className,
                            "putAll",
                            Type.getMethodDescriptor( Type.VOID_TYPE,
                                                      new Type[]{Type.getType( Map.class )} ) );
        Label l2 = new Label();
        mv.visitLabel( l2 );
        mv.visitInsn( Opcodes.RETURN );
        Label l3 = new Label();
        mv.visitLabel( l3 );
        mv.visitLocalVariable( "this",
                               "L" + className + ";",
                               null,
                               l0,
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                                                 null,
                                                 exceptions );
        mv.visitCode();

        // return this.delegate.method(...);
        final Label l0 = new Label();
        mv.visitLabel( l0 );
        mv.visitVarInsn( Opcodes.ALOAD,
                         0 );
        mv.visitFieldInsn( Opcodes.GETFIELD,
                           className,
                           ShadowProxyFactory.DELEGATE_FIELD_NAME,
                           Type.getDescriptor( clazz ) );

        final Class[] parameters = method.getParameterTypes();
        for ( int i = 0, offset = 1; i < parameters.length; i++ ) {
            Type type = Type.getType( parameters[i] );
            mv.visitVarInsn( type.getOpcode( Opcodes.ILOAD ),
                             offset );
            offset += type.getSize();
        }
        if ( clazz.isInterface() ) {
            mv.visitMethodInsn( Opcodes.INVOKEINTERFACE,
                                Type.getInternalName( clazz ),
                                method.getName(),
                                Type.getMethodDescriptor( method ) );
        } else {
            mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                                Type.getInternalName( clazz ),
                                method.getName(),
                                Type.getMethodDescriptor( method ) );
        }
        mv.visitInsn( Type.getType( method.getReturnType() ).getOpcode( Opcodes.IRETURN ) );
        final Label l1 = new Label();
        mv.visitLabel( l1 );
        mv.visitLocalVariable( "this",
                               "L" + className + ";",
                               null,
                               l0,
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                                 Type.getMethodDescriptor( Type.BOOLEAN_TYPE,
                                                           new Type[]{Type.getType( Object.class )} ),
                                 null,
                                 null );
            mv.visitCode();
            final Label l0 = new Label();
            mv.visitLabel( l0 );

            // if ( this == object || this.delegate == object || this.delegate.equals( object ) ) {
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            final Label l1 = new Label();
            mv.visitJumpInsn( Opcodes.IF_ACMPEQ,
                              l1 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitFieldInsn( Opcodes.GETFIELD,
                               className,
                               DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitJumpInsn( Opcodes.IF_ACMPEQ,
                              l1 );
           
            mv.visitVarInsn(Opcodes.ALOAD, 0);
            mv.visitFieldInsn( Opcodes.GETFIELD,
                               className,
                               DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );
            mv.visitVarInsn(Opcodes.ALOAD, 1);
            if ( clazz.isInterface() ) {
                mv.visitMethodInsn( Opcodes.INVOKEINTERFACE,
                                    Type.getInternalName( clazz ),
                                    "equals",
                                    Type.getMethodDescriptor( Type.BOOLEAN_TYPE,
                                                              new Type[]{Type.getType( Object.class )} ) );
            } else {
                mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                                    Type.getInternalName( clazz ),
                                    "equals",
                                    Type.getMethodDescriptor( Type.BOOLEAN_TYPE,
                                                              new Type[]{Type.getType( Object.class )} ) );
            }
            Label l2 = new Label();
            mv.visitJumpInsn(Opcodes.IFEQ, l2);
           
            //      return true;
            mv.visitLabel( l1 );
            mv.visitInsn( Opcodes.ICONST_1 );
            mv.visitInsn( Opcodes.IRETURN );
            mv.visitLabel( l2 );

            // if (( object == null ) || ( ! ( object instanceof <class> ) ) )
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            final Label l3 = new Label();
            mv.visitJumpInsn( Opcodes.IFNULL,
                              l3 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitTypeInsn( Opcodes.INSTANCEOF,
                              Type.getInternalName( clazz ) );
            final Label l4 = new Label();
            mv.visitJumpInsn( Opcodes.IFNE,
                              l4 );

            //       return false;
            mv.visitLabel( l3 );
            mv.visitInsn( Opcodes.ICONST_0 );
            mv.visitInsn( Opcodes.IRETURN );
            mv.visitLabel( l4 );

            // if( object instanceof ShadowProxy &&
            //     ( this.delegate == ((ShadowProxy)object).delegate ||
            //       this.delegate.equals( ((ShadowProxy)object).delegate ) ) ) {
            Label c0 = new Label();
            mv.visitLabel( c0 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitTypeInsn( Opcodes.INSTANCEOF,
                              className );
            Label c1 = new Label();
            mv.visitJumpInsn( Opcodes.IFEQ,
                              c1 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitFieldInsn( Opcodes.GETFIELD,
                               className,
                               DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitTypeInsn( Opcodes.CHECKCAST,
                              className );
            mv.visitFieldInsn( Opcodes.GETFIELD,
                               className,
                               DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );
            Label c2 = new Label();
            mv.visitJumpInsn( Opcodes.IF_ACMPEQ,
                              c2 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitFieldInsn( Opcodes.GETFIELD,
                               className,
                               DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitTypeInsn( Opcodes.CHECKCAST,
                              className );
            mv.visitFieldInsn( Opcodes.GETFIELD,
                               className,
                               DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );
            if ( clazz.isInterface() ) {
                mv.visitMethodInsn( Opcodes.INVOKEINTERFACE,
                                    Type.getInternalName( clazz ),
                                    "equals",
                                    Type.getMethodDescriptor( Type.BOOLEAN_TYPE,
                                                              new Type[]{Type.getType( Object.class )} ) );
            } else {
                mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                                    Type.getInternalName( clazz ),
                                    "equals",
                                    Type.getMethodDescriptor( Type.BOOLEAN_TYPE,
                                                              new Type[]{Type.getType( Object.class )} ) );
            }
            mv.visitJumpInsn( Opcodes.IFEQ,
                              c1 );
            mv.visitLabel( c2 );
            //     return true;
            mv.visitInsn( Opcodes.ICONST_1 );
            mv.visitInsn( Opcodes.IRETURN );
            // }
            mv.visitLabel( c1 );
           

            // return false;
            mv.visitInsn( Opcodes.ICONST_0 );
            mv.visitInsn( Opcodes.IRETURN );
            final Label lastLabel = new Label();
            mv.visitLabel( lastLabel );

            mv.visitLocalVariable( "this",
                                   "L" + className + ";",
                                   null,
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