Examples of org.drools.asm.MethodVisitor.visitFieldInsn()

org.drools.asm.MethodVisitor.visitFieldInsn()
Visits a field instruction. A field instruction is an instruction that loads or stores the value of a field of an object. @param opcode the opcode of the type instruction to be visited. Thisopcode is either GETSTATIC, PUTSTATIC, GETFIELD or PUTFIELD. @param owner the internal name of the field's owner class (see {@link Type#getInternalName() getInternalName}). @param name the field's name. @param desc the field's descriptor (see {@link Type Type}).

                                l1 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             0 );
            mv.visitVarInsn( Opcodes.ALOAD,
                             1 );
            mv.visitFieldInsn( Opcodes.PUTFIELD,
                               className,
                               ShadowProxyFactory.DELEGATE_FIELD_NAME,
                               Type.getDescriptor( clazz ) );


            // return

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        // 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,

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        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() ) {

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            // 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,

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                                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 {

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            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,

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                mv.visitMethodInsn( Opcodes.INVOKEVIRTUAL,
                                    Type.getInternalName( clazz ),
                                    method.getName(),
                                    Type.getMethodDescriptor( method ) );
            }
            mv.visitFieldInsn( Opcodes.PUTFIELD,
                               className,
                               fieldName,
                               Type.getDescriptor( fieldType ) );


        }

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        // 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,

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        // 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();

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            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 );

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