Package com.alibaba.fastjson.asm

Examples of com.alibaba.fastjson.asm.ClassWriter

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            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));
        _deserialzeArrayMapping(cw, new Context(className, config, beanInfo, 4));
        byte[] code = cw.toByteArray();

        // org.apache.commons.io.IOUtils.write(code, new java.io.FileOutputStream(
        // "/usr/alibaba/workspace-3.7/fastjson-asm/target/classes/"
        // + className + ".class"));
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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(ParserConfig.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(ParserConfig.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(ParserConfig.class, Class.class, FieldInfo.class);
        Object instance = constructor.newInstance(mapping, clazz, fieldInfo);
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        List<FieldInfo> getters = TypeUtils.computeGetters(clazz, aliasMap, false);

        String className = getGenClassName(clazz);

        ClassWriter cw = new ClassWriter();
        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, className, "java/lang/Object",
                 new String[] { "com/alibaba/fastjson/serializer/ObjectSerializer" });

        {
            FieldVisitor fw = cw.visitField(ACC_PRIVATE, "nature", getDesc(JavaBeanSerializer.class));
            fw.visitEnd();
        }

        for (FieldInfo fieldInfo : getters) {
            {
                FieldVisitor fw = cw.visitField(ACC_PUBLIC, fieldInfo.getName() + "_asm_fieldPrefix",
                                                "Ljava/lang/reflect/Type;");
                fw.visitEnd();
            }

            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");

        for (FieldInfo fieldInfo : getters) {
            mw.visitVarInsn(ALOAD, 0);

            mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(fieldInfo.getDeclaringClass())));

            if (fieldInfo.getMethod() != null) {
                mw.visitLdcInsn(fieldInfo.getMethod().getName());
                mw.visitMethodInsn(INVOKESTATIC, getType(ASMUtils.class), "getMethodType",
                                   "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Type;");

            } else {
                mw.visitLdcInsn(fieldInfo.getField().getName());
                mw.visitMethodInsn(INVOKESTATIC, getType(ASMUtils.class), "getFieldType",
                                   "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Type;");
            }

            mw.visitFieldInsn(PUTFIELD, className, fieldInfo.getName() + "_asm_fieldType", "Ljava/lang/reflect/Type;");
        }

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

        {
            Context context = new Context(className);

            mw = cw.visitMethod(ACC_PUBLIC,
                                "write",
                                "(Lcom/alibaba/fastjson/serializer/JSONSerializer;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, getType(JSONSerializer.class), "getWriter",
                               "()" + getDesc(SerializeWriter.class));
            mw.visitVarInsn(ASTORE, context.var("out"));

            JSONType jsonType = clazz.getAnnotation(JSONType.class);

            if (jsonType == null || jsonType.alphabetic()) {
                Label _else = new Label();

                mw.visitVarInsn(ALOAD, context.var("out"));
                mw.visitFieldInsn(GETSTATIC, getType(SerializerFeature.class), "SortField",
                                  "L" + getType(SerializerFeature.class) + ";");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(SerializeWriter.class), "isEnabled",
                                   "(" + "L" + getType(SerializerFeature.class) + ";" + ")Z");

                mw.visitJumpInsn(IFEQ, _else);
                mw.visitVarInsn(ALOAD, 0);
                mw.visitVarInsn(ALOAD, 1);
                mw.visitVarInsn(ALOAD, 2);
                mw.visitVarInsn(ALOAD, 3);
                mw.visitVarInsn(ALOAD, context.paramFieldType());
                mw.visitMethodInsn(INVOKEVIRTUAL, className, "write1",
                                   "(Lcom/alibaba/fastjson/serializer/JSONSerializer;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;)V");
                mw.visitInsn(RETURN);

                mw.visitLabel(_else);
            }

            mw.visitVarInsn(ALOAD, context.obj()); // obj
            mw.visitTypeInsn(CHECKCAST, 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();
        }

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

            // sortField support
            Context context = new Context(className);

            mw = cw.visitMethod(ACC_PUBLIC,
                                "write1",
                                "(Lcom/alibaba/fastjson/serializer/JSONSerializer;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, getType(JSONSerializer.class), "getWriter",
                               "()" + getDesc(SerializeWriter.class));
            mw.visitVarInsn(ASTORE, context.var("out"));

            mw.visitVarInsn(ALOAD, context.obj()); // obj
            mw.visitTypeInsn(CHECKCAST, getType(clazz)); // serializer
            mw.visitVarInsn(ASTORE, context.var("entity")); // obj

            generateWriteMethod(clazz, mw, sortedGetters, context);

            mw.visitInsn(RETURN);
            mw.visitMaxs(5, context.getVariantCount() + 1);
            mw.visitEnd();
        }

        // writeAsArray
        {
            Context context = new Context(className);

            mw = cw.visitMethod(ACC_PUBLIC,
                                "writeAsArray",
                                "(Lcom/alibaba/fastjson/serializer/JSONSerializer;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, getType(JSONSerializer.class), "getWriter",
                               "()" + getDesc(SerializeWriter.class));
            mw.visitVarInsn(ASTORE, context.var("out"));

            mw.visitVarInsn(ALOAD, context.obj()); // obj
            mw.visitTypeInsn(CHECKCAST, getType(clazz)); // serializer
            mw.visitVarInsn(ASTORE, context.var("entity")); // obj
            generateWriteAsArray(clazz, mw, sortedGetters, 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(
        // "/usr/alibaba/workspace-3.7/fastjson-asm/target/classes/"
        // + className + ".class"));
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        String text = JSON.toJSONString(EishayEncode.mediaContent);
        System.out.println(text);
    }
   
    public void test_1() throws Exception {
        ClassWriter cw = new ClassWriter();
        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, "DateSerializer", "java/lang/Object", new String[] { "com/alibaba/fastjson/serializer/ObjectSerializer" });

        MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mw.visitVarInsn(ALOAD, 0);
        mw.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
        mw.visitInsn(RETURN);
        mw.visitMaxs(1, 1);
        mw.visitEnd();

        mw = cw.visitMethod(ACC_PUBLIC, "write", "(Lcom/alibaba/fastjson/serializer/JSONSerializer;Ljava/lang/Object;)V", null, new String[] { "java/io/IOException" });

        mw.visitVarInsn(ALOAD, 1); // serializer
        mw.visitMethodInsn(INVOKEVIRTUAL, "com/alibaba/fastjson/serializer/JSONSerializer", "getWriter", "()Lcom/alibaba/fastjson/serializer/SerializeWriter;");
        mw.visitVarInsn(ASTORE, 3); // out

        mw.visitVarInsn(ALOAD, 2); // obj
        mw.visitTypeInsn(CHECKCAST, getCastType(Entity.class)); // serializer
        mw.visitVarInsn(ASTORE, 4); // obj
       
        mw.visitVarInsn(ALOAD, 3); // out
        mw.visitLdcInsn("{");
        mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "writeString", "(Ljava/lang/String;)V");
       
        mw.visitVarInsn(ALOAD, 3); // out
        mw.visitLdcInsn("\"id\":");
        mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "write", "(Ljava/lang/String;)V");
       
        mw.visitVarInsn(ALOAD, 3); // out
        mw.visitVarInsn(ALOAD, 4); // entity
        mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(Entity.class), "getId", "()I");
        mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "writeInt", "(I)V");
       
        mw.visitVarInsn(ALOAD, 3); // out
        mw.visitLdcInsn("\",name\":");
        mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "write", "(Ljava/lang/String;)V");
       
        mw.visitVarInsn(ALOAD, 3); // out
        mw.visitVarInsn(ALOAD, 4); // entity
        mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(Entity.class), "getName", "()Ljava/lang/String;");
        mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "writeString", "(Ljava/lang/String;)V");

        mw.visitInsn(RETURN);
        mw.visitMaxs(3, 16);
        mw.visitEnd();

        byte[] code = cw.toByteArray();
        FileOutputStream fos = new FileOutputStream("Example.class");
        fos.write(code);
        fos.close();

        MyClassLoader loader = new MyClassLoader(com.alibaba.fastjson.serializer.ObjectSerializer.class.getClassLoader());
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        List<FieldInfo> getters = TypeUtils.computeGetters(clazz, aliasMap, false);

        String className = getGenClassName(clazz);

        ClassWriter cw = new ClassWriter();
        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, className, "java/lang/Object",
                 new String[] { "com/alibaba/fastjson/serializer/ObjectSerializer" });

        {
            FieldVisitor fw = cw.visitField(ACC_PRIVATE, "nature", getDesc(JavaBeanSerializer.class));
            fw.visitEnd();
        }

        for (FieldInfo fieldInfo : getters) {
            {
                FieldVisitor fw = cw.visitField(ACC_PUBLIC, fieldInfo.getName() + "_asm_fieldPrefix",
                                                "Ljava/lang/reflect/Type;");
                fw.visitEnd();
            }

            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");

        for (FieldInfo fieldInfo : getters) {
            mw.visitVarInsn(ALOAD, 0);

            mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(fieldInfo.getDeclaringClass())));

            if (fieldInfo.getMethod() != null) {
                mw.visitLdcInsn(fieldInfo.getMethod().getName());
                mw.visitMethodInsn(INVOKESTATIC, getType(ASMUtils.class), "getMethodType",
                                   "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Type;");

            } else {
                mw.visitLdcInsn(fieldInfo.getField().getName());
                mw.visitMethodInsn(INVOKESTATIC, getType(ASMUtils.class), "getFieldType",
                                   "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Type;");
            }

            mw.visitFieldInsn(PUTFIELD, className, fieldInfo.getName() + "_asm_fieldType", "Ljava/lang/reflect/Type;");
        }

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

        {
            Context context = new Context(className);

            mw = cw.visitMethod(ACC_PUBLIC,
                                "write",
                                "(Lcom/alibaba/fastjson/serializer/JSONSerializer;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, getType(JSONSerializer.class), "getWriter",
                               "()" + getDesc(SerializeWriter.class));
            mw.visitVarInsn(ASTORE, context.var("out"));

            JSONType jsonType = clazz.getAnnotation(JSONType.class);

            if (jsonType == null || jsonType.alphabetic()) {
                Label _else = new Label();

                mw.visitVarInsn(ALOAD, context.var("out"));
                mw.visitFieldInsn(GETSTATIC, getType(SerializerFeature.class), "SortField",
                                  "L" + getType(SerializerFeature.class) + ";");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(SerializeWriter.class), "isEnabled",
                                   "(" + "L" + getType(SerializerFeature.class) + ";" + ")Z");

                mw.visitJumpInsn(IFEQ, _else);
                mw.visitVarInsn(ALOAD, 0);
                mw.visitVarInsn(ALOAD, 1);
                mw.visitVarInsn(ALOAD, 2);
                mw.visitVarInsn(ALOAD, 3);
                mw.visitVarInsn(ALOAD, context.paramFieldType());
                mw.visitMethodInsn(INVOKEVIRTUAL, className, "write1",
                                   "(Lcom/alibaba/fastjson/serializer/JSONSerializer;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;)V");
                mw.visitInsn(RETURN);

                mw.visitLabel(_else);
            }

            mw.visitVarInsn(ALOAD, context.obj()); // obj
            mw.visitTypeInsn(CHECKCAST, 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();
        }

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

            // sortField support
            Context context = new Context(className);

            mw = cw.visitMethod(ACC_PUBLIC,
                                "write1",
                                "(Lcom/alibaba/fastjson/serializer/JSONSerializer;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, getType(JSONSerializer.class), "getWriter",
                               "()" + getDesc(SerializeWriter.class));
            mw.visitVarInsn(ASTORE, context.var("out"));

            mw.visitVarInsn(ALOAD, context.obj()); // obj
            mw.visitTypeInsn(CHECKCAST, getType(clazz)); // serializer
            mw.visitVarInsn(ASTORE, context.var("entity")); // obj

            generateWriteMethod(clazz, mw, sortedGetters, 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(
        // "/usr/alibaba/workspace-3.7/fastjson-asm/target/classes/"
        // + className + ".class"));
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            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(
//         "/usr/alibaba/workspace-3.7/fastjson-asm/target/classes/"
//         + className + ".class"));
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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(ParserConfig.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(ParserConfig.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(ParserConfig.class, Class.class, FieldInfo.class);
        Object instance = constructor.newInstance(mapping, clazz, fieldInfo);
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        List<FieldInfo> getters = TypeUtils.computeGetters(clazz, aliasMap, false);

        String className = getGenClassName(clazz);

        ClassWriter cw = new ClassWriter();
        cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, className, "java/lang/Object",
                 new String[] { "com/alibaba/fastjson/serializer/ObjectSerializer" });

        {
            FieldVisitor fw = cw.visitField(ACC_PRIVATE, "nature", getDesc(JavaBeanSerializer.class));
            fw.visitEnd();
        }

        for (FieldInfo fieldInfo : getters) {
            {
                FieldVisitor fw = cw.visitField(ACC_PUBLIC, fieldInfo.getName() + "_asm_fieldPrefix",
                                                "Ljava/lang/reflect/Type;");
                fw.visitEnd();
            }

            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");

        for (FieldInfo fieldInfo : getters) {
            mw.visitVarInsn(ALOAD, 0);

            mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(fieldInfo.getDeclaringClass())));

            if (fieldInfo.getMethod() != null) {
                mw.visitLdcInsn(fieldInfo.getMethod().getName());
                mw.visitMethodInsn(INVOKESTATIC, getType(ASMUtils.class), "getMethodType",
                                   "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Type;");

            } else {
                mw.visitLdcInsn(fieldInfo.getField().getName());
                mw.visitMethodInsn(INVOKESTATIC, getType(ASMUtils.class), "getFieldType",
                                   "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Type;");
            }

            mw.visitFieldInsn(PUTFIELD, className, fieldInfo.getName() + "_asm_fieldType", "Ljava/lang/reflect/Type;");
        }

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

        {
            Context context = new Context(className);

            mw = cw.visitMethod(ACC_PUBLIC,
                                "write",
                                "(Lcom/alibaba/fastjson/serializer/JSONSerializer;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, getType(JSONSerializer.class), "getWriter",
                               "()" + getDesc(SerializeWriter.class));
            mw.visitVarInsn(ASTORE, context.var("out"));

            Label _else = new Label();

            mw.visitVarInsn(ALOAD, context.var("out"));
            mw.visitFieldInsn(GETSTATIC, getType(SerializerFeature.class), "SortField",
                              "L" + getType(SerializerFeature.class) + ";");
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(SerializeWriter.class), "isEnabled",
                               "(" + "L" + getType(SerializerFeature.class) + ";" + ")Z");

            mw.visitJumpInsn(IFEQ, _else);
            mw.visitVarInsn(ALOAD, 0);
            mw.visitVarInsn(ALOAD, 1);
            mw.visitVarInsn(ALOAD, 2);
            mw.visitVarInsn(ALOAD, 3);
            mw.visitVarInsn(ALOAD, context.paramFieldType());
            mw.visitMethodInsn(INVOKEVIRTUAL, className, "write1",
                               "(Lcom/alibaba/fastjson/serializer/JSONSerializer;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;)V");
            mw.visitInsn(RETURN);

            mw.visitLabel(_else);
            mw.visitVarInsn(ALOAD, context.obj()); // obj
            mw.visitTypeInsn(CHECKCAST, 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();
        }

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

            // sortField support
            Context context = new Context(className);

            mw = cw.visitMethod(ACC_PUBLIC,
                                "write1",
                                "(Lcom/alibaba/fastjson/serializer/JSONSerializer;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, getType(JSONSerializer.class), "getWriter",
                               "()" + getDesc(SerializeWriter.class));
            mw.visitVarInsn(ASTORE, context.var("out"));

            mw.visitVarInsn(ALOAD, context.obj()); // obj
            mw.visitTypeInsn(CHECKCAST, getType(clazz)); // serializer
            mw.visitVarInsn(ASTORE, context.var("entity")); // obj

            generateWriteMethod(clazz, mw, sortedGetters, 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(
        // "/usr/alibaba/workspace-3.7/fastjson-asm/target/classes/"
        // + className + ".class"));
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            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, "com/alibaba/fastjson/parser/deserializer/ASMJavaBeanDeserializer", 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));
        _deserialzeArrayMapping(cw, new Context(className, config, beanInfo, 4));
        byte[] code = cw.toByteArray();

        if(JSON.DUMP_CLASS != null){
            FileOutputStream fos=null;
            try {
                fos=new FileOutputStream(JSON.DUMP_CLASS+ File.separator
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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>" //
                                              , "(Lcom/alibaba/fastjson/parser/ParserConfig;Ljava/lang/Class;Lcom/alibaba/fastjson/util/FieldInfo;)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>"
                               , "(Lcom/alibaba/fastjson/parser/ParserConfig;Ljava/lang/Class;Lcom/alibaba/fastjson/util/FieldInfo;)V");

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

        if (method != null) {
            if (fieldClass == int.class) {
                MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "setValue", "(Ljava/lang/Object;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", "(Ljava/lang/Object;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", "(Ljava/lang/Object;Ljava/lang/Object;)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(ParserConfig.class, Class.class, FieldInfo.class);
        Object instance = constructor.newInstance(mapping, clazz, fieldInfo);
View Full Code Here
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Related Classes of com.alibaba.fastjson.asm.ClassWriter

  • com.alibaba.fastjson.parser.deserializer.ASMDeserializerFactory
  • com.alibaba.fastjson.serializer.ASMSerializerFactory
  • com.alibaba.json.test.TestASM
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    All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.