Examples of com.jd.glowworm.asm.ClassWriter

com.jd.glowworm.asm.ClassWriter
A {@link ClassVisitor} that generates classes in bytecode form. More precisely this visitor generates a byte arrayconforming to the Java class file format. It can be used alone, to generate a Java class "from scratch", or with one or more and adapter class visitor to generate a modified class from one or more existing Java classes. @author Eric Bruneton

            throw new IllegalArgumentException("not support type :" + clazz.getName());
        }


        String className = getGenClassName(clazz);


        ClassWriter cw = new ClassWriter();
        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, className, getType(ASMJavaBeanDeserializer.class), null);


        DeserializeBeanInfo beanInfo = DeserializeBeanInfo.computeSetters(clazz, type);


        _init(cw, new Context(className, config, beanInfo, 3));
        _createInstance(cw, new Context(className, config, beanInfo, 3));
        _deserialze(cw, new Context(className, config, beanInfo, 4));


        byte[] code = cw.toByteArray();


        /*org.apache.commons.io.IOUtils.write(code, new java.io.FileOutputStream(
          "d:/"+ className + ".class"));*/


        Class<?> exampleClass = classLoader.defineClassPublic(className, code, 0, code.length);

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        Class<?> fieldClass = fieldInfo.getFieldClass();
        Method method = fieldInfo.getMethod();


        String className = getGenFieldDeserializer(clazz, fieldInfo);


        ClassWriter cw = new ClassWriter();
        Class<?> superClass;
        if (fieldClass == int.class) {
            superClass = IntegerFieldDeserializer.class;
        } else if (fieldClass == long.class) {
            superClass = LongFieldDeserializer.class;
        } else {
            superClass = StringFieldDeserializer.class;
        }


        int INVAKE_TYPE;
        if (clazz.isInterface()) {
            INVAKE_TYPE = INVOKEINTERFACE;
        } else {
            INVAKE_TYPE = INVOKEVIRTUAL;
        }


        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, className, getType(superClass), null);


        {
            MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "<init>", "(" + getDesc(PBDeserializer.class)
                                                                    + getDesc(Class.class) + getDesc(FieldInfo.class)
                                                                    + ")V", null, null);
            mw.visitVarInsn(ALOAD, 0);
            mw.visitVarInsn(ALOAD, 1);
            mw.visitVarInsn(ALOAD, 2);
            mw.visitVarInsn(ALOAD, 3);
            mw.visitMethodInsn(INVOKESPECIAL, getType(superClass), "<init>", "(" + getDesc(PBDeserializer.class)
                                                                             + getDesc(Class.class)
                                                                             + getDesc(FieldInfo.class) + ")V");


            mw.visitInsn(RETURN);
            mw.visitMaxs(4, 6);
            mw.visitEnd();
        }


        if (method != null) {
            if (fieldClass == int.class) {
                MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "setValue", "(" + getDesc(Object.class) + "I)V", null,
                                                  null);
                mw.visitVarInsn(ALOAD, 1);
                mw.visitTypeInsn(CHECKCAST, getType(method.getDeclaringClass())); // cast
                mw.visitVarInsn(ILOAD, 2);
                mw.visitMethodInsn(INVAKE_TYPE, getType(method.getDeclaringClass()), method.getName(), ASMUtils.getDesc(method));


                mw.visitInsn(RETURN);
                mw.visitMaxs(3, 3);
                mw.visitEnd();
            } else if (fieldClass == long.class) {
                MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "setValue", "(" + getDesc(Object.class) + "J)V", null,
                                                  null);
                mw.visitVarInsn(ALOAD, 1);
                mw.visitTypeInsn(CHECKCAST, getType(method.getDeclaringClass())); // cast
                mw.visitVarInsn(LLOAD, 2);
                mw.visitMethodInsn(INVAKE_TYPE, getType(method.getDeclaringClass()), method.getName(), ASMUtils.getDesc(method));


                mw.visitInsn(RETURN);
                mw.visitMaxs(3, 4);
                mw.visitEnd();
            } else {
                // public void setValue(Object object, Object value)
                MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "setValue", "(" + getDesc(Object.class)
                                                                          + getDesc(Object.class) + ")V", null, null);
                mw.visitVarInsn(ALOAD, 1);
                mw.visitTypeInsn(CHECKCAST, getType(method.getDeclaringClass())); // cast
                mw.visitVarInsn(ALOAD, 2);
                mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
                mw.visitMethodInsn(INVAKE_TYPE, getType(method.getDeclaringClass()), method.getName(),
                    ASMUtils.getDesc(method));


                mw.visitInsn(RETURN);
                mw.visitMaxs(3, 3);
                mw.visitEnd();
            }
        }


        byte[] code = cw.toByteArray();


        Class<?> exampleClass = classLoader.defineClassPublic(className, code, 0, code.length);


        Constructor<?> constructor = exampleClass.getConstructor(PBDeserializer.class, Class.class, FieldInfo.class);
        Object instance = constructor.newInstance(mapping, clazz, fieldInfo);

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        List<FieldInfo> getters = TypeUtils.computeGetters(clazz, aliasMap, true);


        String className = getGenClassName(clazz);


        ClassWriter cw = new ClassWriter();
        
        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, className, "java/lang/Object",
                new String[] { "com/jd/glowworm/serializer/ObjectSerializer" });
        
        for (FieldInfo fieldInfo : getters) {
            FieldVisitor fw = cw.visitField(ACC_PUBLIC, fieldInfo.getName() + "_asm_fieldType",
                                            "Ljava/lang/reflect/Type;");
            fw.visitEnd();
        }


        MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mw.visitVarInsn(ALOAD, 0);
        mw.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");


        // mw.visitFieldInsn(PUTFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
        mw.visitInsn(RETURN);
        mw.visitMaxs(4, 4);
        mw.visitEnd();


        {
            Context context = new Context(className);


            mw = cw.visitMethod(ACC_PUBLIC,
                                "write",
                                "(Lcom/jd/glowworm/serializer/PBSerializer;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;)V",
                                null, new String[] { "java/io/IOException" });


            mw.visitVarInsn(ALOAD, context.serializer()); // serializer
            mw.visitMethodInsn(INVOKEVIRTUAL, ASMUtils.getType(PBSerializer.class), "getWriter",
                               "()" + ASMUtils.getDesc(SerializeWriter.class));
            mw.visitVarInsn(ASTORE, context.var("out"));
            
            mw.visitVarInsn(ALOAD, context.obj()); // obj
            mw.visitTypeInsn(CHECKCAST, ASMUtils.getType(clazz)); // serializer
            mw.visitVarInsn(ASTORE, context.var("entity")); // obj


            generateWriteMethod(clazz, mw, getters, context);


            mw.visitInsn(RETURN);
            mw.visitMaxs(5, context.getVariantCount() + 1);
            mw.visitEnd();
        }
        
        byte[] code = cw.toByteArray();
        
        /*org.apache.commons.io.IOUtils.write(code, new java.io.FileOutputStream(
            "D:/"+ className + ".class"));*/


        Class<?> exampleClass = classLoader.defineClassPublic(className, code, 0, code.length);

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Related Classes of com.jd.glowworm.asm.ClassWriter

com.jd.glowworm.deserializer.ASMDeserializerFactory

com.jd.glowworm.serializer.ASMSerializerFactory

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