Examples with MethodVisitor com.alibaba.fastjson.asm.MethodVisitor used on opensource projects

Example 1 with MethodVisitor

use of com.alibaba.fastjson.asm.MethodVisitor in project fastjson by alibaba.

the class ASMDeserializerFactory method _createInstance.

private void _createInstance(ClassWriter cw, Context context) {
    Constructor<?> defaultConstructor = context.beanInfo.defaultConstructor;
    if (!Modifier.isPublic(defaultConstructor.getModifiers())) {
        return;
    }
    MethodVisitor mw = new MethodWriter(cw, ACC_PUBLIC, "createInstance", "(L" + DefaultJSONParser + ";Ljava/lang/reflect/Type;)Ljava/lang/Object;", null, null);
    mw.visitTypeInsn(NEW, type(context.getInstClass()));
    mw.visitInsn(DUP);
    mw.visitMethodInsn(INVOKESPECIAL, type(context.getInstClass()), "<init>", "()V");
    mw.visitInsn(ARETURN);
    mw.visitMaxs(3, 3);
    mw.visitEnd();
}

Example 2 with MethodVisitor

use of com.alibaba.fastjson.asm.MethodVisitor in project fastjson by alibaba.

the class ASMDeserializerFactory method _init.

private void _init(ClassWriter cw, Context context) {
    for (int i = 0, size = context.fieldInfoList.length; i < size; ++i) {
        FieldInfo fieldInfo = context.fieldInfoList[i];
        FieldWriter fw = new FieldWriter(cw, ACC_PUBLIC, fieldInfo.name + "_asm_prefix__", "[C");
        fw.visitEnd();
    }
    for (int i = 0, size = context.fieldInfoList.length; i < size; ++i) {
        FieldInfo fieldInfo = context.fieldInfoList[i];
        Class<?> fieldClass = fieldInfo.fieldClass;
        if (fieldClass.isPrimitive()) {
            continue;
        }
        if (Collection.class.isAssignableFrom(fieldClass)) {
            FieldWriter fw = new FieldWriter(cw, ACC_PUBLIC, fieldInfo.name + "_asm_list_item_deser__", desc(ObjectDeserializer.class));
            fw.visitEnd();
        } else {
            FieldWriter fw = new FieldWriter(cw, ACC_PUBLIC, fieldInfo.name + "_asm_deser__", desc(ObjectDeserializer.class));
            fw.visitEnd();
        }
    }
    MethodVisitor mw = new MethodWriter(cw, ACC_PUBLIC, "<init>", "(" + desc(ParserConfig.class) + desc(JavaBeanInfo.class) + ")V", null, null);
    mw.visitVarInsn(ALOAD, 0);
    mw.visitVarInsn(ALOAD, 1);
    mw.visitVarInsn(ALOAD, 2);
    mw.visitMethodInsn(INVOKESPECIAL, type(JavaBeanDeserializer.class), "<init>", "(" + desc(ParserConfig.class) + desc(JavaBeanInfo.class) + ")V");
    // init fieldNamePrefix
    for (int i = 0, size = context.fieldInfoList.length; i < size; ++i) {
        FieldInfo fieldInfo = context.fieldInfoList[i];
        mw.visitVarInsn(ALOAD, 0);
        // public char[] toCharArray()
        mw.visitLdcInsn("\"" + fieldInfo.name + "\":");
        mw.visitMethodInsn(INVOKEVIRTUAL, "java/lang/String", "toCharArray", "()[C");
        mw.visitFieldInsn(PUTFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
    }
    mw.visitInsn(RETURN);
    mw.visitMaxs(4, 4);
    mw.visitEnd();
}

Example 3 with MethodVisitor

use of com.alibaba.fastjson.asm.MethodVisitor in project fastjson by alibaba.

the class TestASM method test_1.

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 = new MethodWriter(cw, 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 = new MethodWriter(cw, ACC_PUBLIC, "write", "(Lcom/alibaba/fastjson/serializer/JSONSerializer;Ljava/lang/Object;)V", null, new String[] { "java/io/IOException" });
    // serializer
    mw.visitVarInsn(ALOAD, 1);
    mw.visitMethodInsn(INVOKEVIRTUAL, "com/alibaba/fastjson/serializer/JSONSerializer", "getWriter", "()Lcom/alibaba/fastjson/serializer/SerializeWriter;");
    // out
    mw.visitVarInsn(ASTORE, 3);
    // obj
    mw.visitVarInsn(ALOAD, 2);
    // serializer
    mw.visitTypeInsn(CHECKCAST, getCastType(Entity.class));
    // obj
    mw.visitVarInsn(ASTORE, 4);
    // out
    mw.visitVarInsn(ALOAD, 3);
    mw.visitLdcInsn("{");
    mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "writeString", "(Ljava/lang/String;)V");
    // out
    mw.visitVarInsn(ALOAD, 3);
    mw.visitLdcInsn("\"id\":");
    mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "write", "(Ljava/lang/String;)V");
    // out
    mw.visitVarInsn(ALOAD, 3);
    // entity
    mw.visitVarInsn(ALOAD, 4);
    mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(Entity.class), "getId", "()I");
    mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "writeInt", "(I)V");
    // out
    mw.visitVarInsn(ALOAD, 3);
    mw.visitLdcInsn("\",name\":");
    mw.visitMethodInsn(INVOKEVIRTUAL, getCastType(SerializeWriter.class), "write", "(Ljava/lang/String;)V");
    // out
    mw.visitVarInsn(ALOAD, 3);
    // entity
    mw.visitVarInsn(ALOAD, 4);
    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());
    Class<?> exampleClass = loader.defineClassF("DateSerializer", code, 0, code.length);
    Method[] methods = exampleClass.getMethods();
    Object instance = exampleClass.newInstance();
    SerializeWriter out = new SerializeWriter();
    JSONSerializer serializer = new JSONSerializer(out);
    Entity obj = new Entity();
    methods[0].invoke(instance, serializer, obj);
    System.out.println(out.toString());
}

Example 4 with MethodVisitor

use of com.alibaba.fastjson.asm.MethodVisitor in project fastjson by alibaba.

the class ASMSerializerFactory method createJavaBeanSerializer.

public JavaBeanSerializer createJavaBeanSerializer(SerializeBeanInfo beanInfo) throws Exception {
    Class<?> clazz = beanInfo.beanType;
    if (clazz.isPrimitive()) {
        throw new JSONException("unsupportd class " + clazz.getName());
    }
    JSONType jsonType = clazz.getAnnotation(JSONType.class);
    FieldInfo[] unsortedGetters = beanInfo.fields;
    ;
    for (FieldInfo fieldInfo : unsortedGetters) {
        if (//
        fieldInfo.field == null && //
        fieldInfo.method != null && fieldInfo.method.getDeclaringClass().isInterface()) {
            return new JavaBeanSerializer(clazz);
        }
    }
    FieldInfo[] getters = beanInfo.sortedFields;
    boolean nativeSorted = beanInfo.sortedFields == beanInfo.fields;
    if (getters.length > 256) {
        return new JavaBeanSerializer(clazz);
    }
    for (FieldInfo getter : getters) {
        if (!ASMUtils.checkName(getter.getMember().getName())) {
            return new JavaBeanSerializer(clazz);
        }
    }
    String className = "ASMSerializer_" + seed.incrementAndGet() + "_" + clazz.getSimpleName();
    String packageName = ASMSerializerFactory.class.getPackage().getName();
    String classNameType = packageName.replace('.', '/') + "/" + className;
    String classNameFull = packageName + "." + className;
    ClassWriter cw = new ClassWriter();
    //
    cw.visit(//
    V1_5, //
    ACC_PUBLIC + ACC_SUPER, //
    classNameType, //
    JavaBeanSerializer, //
    new String[] { ObjectSerializer });
    for (FieldInfo fieldInfo : getters) {
        if (//
        fieldInfo.fieldClass.isPrimitive() || //|| fieldInfo.fieldClass.isEnum() //
        fieldInfo.fieldClass == String.class) {
            continue;
        }
        //
        new FieldWriter(cw, ACC_PUBLIC, fieldInfo.name + "_asm_fieldType", "Ljava/lang/reflect/Type;").visitEnd();
        if (List.class.isAssignableFrom(fieldInfo.fieldClass)) {
            new FieldWriter(cw, ACC_PUBLIC, fieldInfo.name + "_asm_list_item_ser_", //
            ObjectSerializer_desc).visitEnd();
        }
        //
        new FieldWriter(cw, ACC_PUBLIC, fieldInfo.name + "_asm_ser_", ObjectSerializer_desc).visitEnd();
    }
    MethodVisitor mw = new MethodWriter(cw, ACC_PUBLIC, "<init>", "(" + desc(SerializeBeanInfo.class) + ")V", null, null);
    mw.visitVarInsn(ALOAD, 0);
    mw.visitVarInsn(ALOAD, 1);
    mw.visitMethodInsn(INVOKESPECIAL, JavaBeanSerializer, "<init>", "(" + desc(SerializeBeanInfo.class) + ")V");
    // init _asm_fieldType
    for (int i = 0; i < getters.length; ++i) {
        FieldInfo fieldInfo = getters[i];
        if (//
        fieldInfo.fieldClass.isPrimitive() || //                || fieldInfo.fieldClass.isEnum() //
        fieldInfo.fieldClass == String.class) {
            continue;
        }
        mw.visitVarInsn(ALOAD, 0);
        if (fieldInfo.method != null) {
            mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(desc(fieldInfo.declaringClass)));
            mw.visitLdcInsn(fieldInfo.method.getName());
            mw.visitMethodInsn(INVOKESTATIC, type(ASMUtils.class), "getMethodType", "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Type;");
        } else {
            mw.visitVarInsn(ALOAD, 0);
            mw.visitLdcInsn(i);
            mw.visitMethodInsn(INVOKESPECIAL, JavaBeanSerializer, "getFieldType", "(I)Ljava/lang/reflect/Type;");
        }
        mw.visitFieldInsn(PUTFIELD, classNameType, fieldInfo.name + "_asm_fieldType", "Ljava/lang/reflect/Type;");
    }
    mw.visitInsn(RETURN);
    mw.visitMaxs(4, 4);
    mw.visitEnd();
    boolean DisableCircularReferenceDetect = false;
    if (jsonType != null) {
        for (SerializerFeature featrues : jsonType.serialzeFeatures()) {
            if (featrues == SerializerFeature.DisableCircularReferenceDetect) {
                DisableCircularReferenceDetect = true;
                break;
            }
        }
    }
    // 2 writeNonContext
    for (int i = 0; i < 3; ++i) {
        String methodName;
        boolean nonContext = DisableCircularReferenceDetect;
        boolean writeDirect = false;
        if (i == 0) {
            methodName = "write";
            writeDirect = true;
        } else if (i == 1) {
            methodName = "writeNormal";
        } else {
            writeDirect = true;
            nonContext = true;
            methodName = "writeDirectNonContext";
        }
        Context context = new Context(getters, beanInfo, classNameType, writeDirect, nonContext);
        mw = new //
        MethodWriter(//
        cw, //
        ACC_PUBLIC, //
        methodName, "(L" + JSONSerializer + //
        ";Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;I)V", //
        null, //
        new String[] { "java/io/IOException" });
        {
            Label endIf_ = new Label();
            mw.visitVarInsn(ALOAD, Context.obj);
            //serializer.writeNull();
            mw.visitJumpInsn(IFNONNULL, endIf_);
            mw.visitVarInsn(ALOAD, Context.serializer);
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONSerializer, "writeNull", "()V");
            mw.visitInsn(RETURN);
            mw.visitLabel(endIf_);
        }
        mw.visitVarInsn(ALOAD, Context.serializer);
        mw.visitFieldInsn(GETFIELD, JSONSerializer, "out", SerializeWriter_desc);
        mw.visitVarInsn(ASTORE, context.var("out"));
        if (//
        (!nativeSorted) && !context.writeDirect) {
            if (jsonType == null || jsonType.alphabetic()) {
                Label _else = new Label();
                mw.visitVarInsn(ALOAD, context.var("out"));
                mw.visitMethodInsn(INVOKEVIRTUAL, SerializeWriter, "isSortField", "()Z");
                mw.visitJumpInsn(IFNE, _else);
                mw.visitVarInsn(ALOAD, 0);
                mw.visitVarInsn(ALOAD, 1);
                mw.visitVarInsn(ALOAD, 2);
                mw.visitVarInsn(ALOAD, 3);
                mw.visitVarInsn(ALOAD, 4);
                mw.visitVarInsn(ILOAD, 5);
                mw.visitMethodInsn(INVOKEVIRTUAL, classNameType, "writeUnsorted", "(L" + JSONSerializer + ";Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;I)V");
                mw.visitInsn(RETURN);
                mw.visitLabel(_else);
            }
        }
        // isWriteDoubleQuoteDirect
        if (context.writeDirect && !nonContext) {
            Label _direct = new Label();
            Label _directElse = new Label();
            mw.visitVarInsn(ALOAD, 0);
            mw.visitVarInsn(ALOAD, Context.serializer);
            mw.visitMethodInsn(INVOKEVIRTUAL, JavaBeanSerializer, "writeDirect", "(L" + JSONSerializer + ";)Z");
            mw.visitJumpInsn(IFNE, _directElse);
            mw.visitVarInsn(ALOAD, 0);
            mw.visitVarInsn(ALOAD, 1);
            mw.visitVarInsn(ALOAD, 2);
            mw.visitVarInsn(ALOAD, 3);
            mw.visitVarInsn(ALOAD, 4);
            mw.visitVarInsn(ILOAD, 5);
            mw.visitMethodInsn(INVOKEVIRTUAL, classNameType, "writeNormal", "(L" + JSONSerializer + ";Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;I)V");
            mw.visitInsn(RETURN);
            mw.visitLabel(_directElse);
            mw.visitVarInsn(ALOAD, context.var("out"));
            mw.visitLdcInsn(SerializerFeature.DisableCircularReferenceDetect.mask);
            mw.visitMethodInsn(INVOKEVIRTUAL, SerializeWriter, "isEnabled", "(I)Z");
            mw.visitJumpInsn(IFEQ, _direct);
            mw.visitVarInsn(ALOAD, 0);
            mw.visitVarInsn(ALOAD, 1);
            mw.visitVarInsn(ALOAD, 2);
            mw.visitVarInsn(ALOAD, 3);
            mw.visitVarInsn(ALOAD, 4);
            mw.visitVarInsn(ILOAD, 5);
            mw.visitMethodInsn(INVOKEVIRTUAL, classNameType, "writeDirectNonContext", "(L" + JSONSerializer + ";Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;I)V");
            mw.visitInsn(RETURN);
            mw.visitLabel(_direct);
        }
        // obj
        mw.visitVarInsn(ALOAD, Context.obj);
        // serializer
        mw.visitTypeInsn(CHECKCAST, type(clazz));
        // obj
        mw.visitVarInsn(ASTORE, context.var("entity"));
        generateWriteMethod(clazz, mw, getters, context);
        mw.visitInsn(RETURN);
        mw.visitMaxs(7, context.variantIndex + 2);
        mw.visitEnd();
    }
    if (!nativeSorted) {
        // sortField support
        Context context = new Context(getters, beanInfo, classNameType, false, DisableCircularReferenceDetect);
        mw = new MethodWriter(cw, ACC_PUBLIC, "writeUnsorted", "(L" + JSONSerializer + ";Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;I)V", null, new String[] { "java/io/IOException" });
        mw.visitVarInsn(ALOAD, Context.serializer);
        mw.visitFieldInsn(GETFIELD, JSONSerializer, "out", SerializeWriter_desc);
        mw.visitVarInsn(ASTORE, context.var("out"));
        // obj
        mw.visitVarInsn(ALOAD, Context.obj);
        // serializer
        mw.visitTypeInsn(CHECKCAST, type(clazz));
        // obj
        mw.visitVarInsn(ASTORE, context.var("entity"));
        generateWriteMethod(clazz, mw, unsortedGetters, context);
        mw.visitInsn(RETURN);
        mw.visitMaxs(7, context.variantIndex + 2);
        mw.visitEnd();
    }
    // 2 writeAsArrayNonContext
    for (int i = 0; i < 3; ++i) {
        String methodName;
        boolean nonContext = DisableCircularReferenceDetect;
        boolean writeDirect = false;
        if (i == 0) {
            methodName = "writeAsArray";
            writeDirect = true;
        } else if (i == 1) {
            methodName = "writeAsArrayNormal";
        } else {
            writeDirect = true;
            nonContext = true;
            methodName = "writeAsArrayNonContext";
        }
        Context context = new Context(getters, beanInfo, classNameType, writeDirect, nonContext);
        mw = new MethodWriter(cw, ACC_PUBLIC, methodName, "(L" + JSONSerializer + ";Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;I)V", null, new String[] { "java/io/IOException" });
        mw.visitVarInsn(ALOAD, Context.serializer);
        mw.visitFieldInsn(GETFIELD, JSONSerializer, "out", SerializeWriter_desc);
        mw.visitVarInsn(ASTORE, context.var("out"));
        // obj
        mw.visitVarInsn(ALOAD, Context.obj);
        // serializer
        mw.visitTypeInsn(CHECKCAST, type(clazz));
        // obj
        mw.visitVarInsn(ASTORE, context.var("entity"));
        generateWriteAsArray(clazz, mw, getters, context);
        mw.visitInsn(RETURN);
        mw.visitMaxs(7, context.variantIndex + 2);
        mw.visitEnd();
    }
    byte[] code = cw.toByteArray();
    Class<?> exampleClass = classLoader.defineClassPublic(classNameFull, code, 0, code.length);
    Constructor<?> constructor = exampleClass.getConstructor(SerializeBeanInfo.class);
    Object instance = constructor.newInstance(beanInfo);
    return (JavaBeanSerializer) instance;
}

Example 5 with MethodVisitor

use of com.alibaba.fastjson.asm.MethodVisitor in project fastjson by alibaba.

the class ASMDeserializerFactory method _deserialze.

private void _deserialze(ClassWriter cw, Context context) {
    if (context.fieldInfoList.length == 0) {
        return;
    }
    for (FieldInfo fieldInfo : context.fieldInfoList) {
        Class<?> fieldClass = fieldInfo.fieldClass;
        Type fieldType = fieldInfo.fieldType;
        if (fieldClass == char.class) {
            return;
        }
        if (Collection.class.isAssignableFrom(fieldClass)) {
            if (fieldType instanceof ParameterizedType) {
                Type itemType = ((ParameterizedType) fieldType).getActualTypeArguments()[0];
                if (itemType instanceof Class) {
                    continue;
                } else {
                    return;
                }
            } else {
                return;
            }
        }
    }
    JavaBeanInfo beanInfo = context.beanInfo;
    context.fieldInfoList = beanInfo.sortedFields;
    MethodVisitor mw = new MethodWriter(cw, ACC_PUBLIC, "deserialze", "(L" + DefaultJSONParser + ";Ljava/lang/reflect/Type;Ljava/lang/Object;I)Ljava/lang/Object;", null, null);
    Label reset_ = new Label();
    Label super_ = new Label();
    Label return_ = new Label();
    Label end_ = new Label();
    defineVarLexer(context, mw);
    {
        Label next_ = new Label();
        // isSupportArrayToBean
        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "token", "()I");
        mw.visitLdcInsn(JSONToken.LBRACKET);
        mw.visitJumpInsn(IF_ICMPNE, next_);
        if ((beanInfo.parserFeatures & Feature.SupportArrayToBean.mask) == 0) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ILOAD, 4);
            mw.visitLdcInsn(Feature.SupportArrayToBean.mask);
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "isEnabled", "(II)Z");
            mw.visitJumpInsn(IFEQ, next_);
        }
        mw.visitVarInsn(ALOAD, 0);
        mw.visitVarInsn(ALOAD, Context.parser);
        mw.visitVarInsn(ALOAD, 2);
        mw.visitVarInsn(ALOAD, 3);
        //mw.visitVarInsn(ALOAD, 5);
        mw.visitInsn(ACONST_NULL);
        //
        mw.visitMethodInsn(//
        INVOKESPECIAL, //
        context.className, //
        "deserialzeArrayMapping", "(L" + DefaultJSONParser + ";Ljava/lang/reflect/Type;Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;");
        mw.visitInsn(ARETURN);
        mw.visitLabel(next_);
    // deserialzeArrayMapping
    }
    mw.visitVarInsn(ALOAD, context.var("lexer"));
    mw.visitLdcInsn(Feature.SortFeidFastMatch.mask);
    mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "isEnabled", "(I)Z");
    mw.visitJumpInsn(IFEQ, super_);
    mw.visitVarInsn(ALOAD, context.var("lexer"));
    mw.visitLdcInsn(context.clazz.getName());
    mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanType", "(Ljava/lang/String;)I");
    mw.visitLdcInsn(com.alibaba.fastjson.parser.JSONLexerBase.NOT_MATCH);
    mw.visitJumpInsn(IF_ICMPEQ, super_);
    // parser
    mw.visitVarInsn(ALOAD, 1);
    mw.visitMethodInsn(INVOKEVIRTUAL, DefaultJSONParser, "getContext", "()" + desc(ParseContext.class));
    mw.visitVarInsn(ASTORE, context.var("mark_context"));
    // ParseContext context = parser.getContext();
    mw.visitInsn(ICONST_0);
    mw.visitVarInsn(ISTORE, context.var("matchedCount"));
    _createInstance(context, mw);
    {
        // parser
        mw.visitVarInsn(ALOAD, 1);
        mw.visitMethodInsn(INVOKEVIRTUAL, DefaultJSONParser, "getContext", "()" + desc(ParseContext.class));
        mw.visitVarInsn(ASTORE, context.var("context"));
        // parser
        mw.visitVarInsn(ALOAD, 1);
        mw.visitVarInsn(ALOAD, context.var("context"));
        mw.visitVarInsn(ALOAD, context.var("instance"));
        // fieldName
        mw.visitVarInsn(ALOAD, 3);
        //
        mw.visitMethodInsn(//
        INVOKEVIRTUAL, //
        DefaultJSONParser, //
        "setContext", "(" + desc(ParseContext.class) + "Ljava/lang/Object;Ljava/lang/Object;)" + desc(ParseContext.class));
        mw.visitVarInsn(ASTORE, context.var("childContext"));
    }
    mw.visitVarInsn(ALOAD, context.var("lexer"));
    mw.visitFieldInsn(GETFIELD, JSONLexerBase, "matchStat", "I");
    mw.visitLdcInsn(com.alibaba.fastjson.parser.JSONLexerBase.END);
    mw.visitJumpInsn(IF_ICMPEQ, return_);
    // UNKOWN
    mw.visitInsn(ICONST_0);
    mw.visitIntInsn(ISTORE, context.var("matchStat"));
    int fieldListSize = context.fieldInfoList.length;
    for (int i = 0; i < fieldListSize; i += 32) {
        mw.visitInsn(ICONST_0);
        mw.visitVarInsn(ISTORE, context.var("_asm_flag_" + (i / 32)));
    }
    mw.visitVarInsn(ALOAD, context.var("lexer"));
    mw.visitLdcInsn(Feature.InitStringFieldAsEmpty.mask);
    mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "isEnabled", "(I)Z");
    mw.visitIntInsn(ISTORE, context.var("initStringFieldAsEmpty"));
    // declare and init
    for (int i = 0; i < fieldListSize; ++i) {
        FieldInfo fieldInfo = context.fieldInfoList[i];
        Class<?> fieldClass = fieldInfo.fieldClass;
        if (//
        fieldClass == boolean.class || //
        fieldClass == byte.class || //
        fieldClass == short.class || fieldClass == int.class) {
            mw.visitInsn(ICONST_0);
            mw.visitVarInsn(ISTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == long.class) {
            mw.visitInsn(LCONST_0);
            mw.visitVarInsn(LSTORE, context.var(fieldInfo.name + "_asm", 2));
        } else if (fieldClass == float.class) {
            mw.visitInsn(FCONST_0);
            mw.visitVarInsn(FSTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == double.class) {
            mw.visitInsn(DCONST_0);
            mw.visitVarInsn(DSTORE, context.var(fieldInfo.name + "_asm", 2));
        } else {
            if (fieldClass == String.class) {
                Label flagEnd_ = new Label();
                Label flagElse_ = new Label();
                mw.visitVarInsn(ILOAD, context.var("initStringFieldAsEmpty"));
                mw.visitJumpInsn(IFEQ, flagElse_);
                _setFlag(mw, context, i);
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "stringDefaultValue", "()Ljava/lang/String;");
                mw.visitJumpInsn(GOTO, flagEnd_);
                mw.visitLabel(flagElse_);
                mw.visitInsn(ACONST_NULL);
                mw.visitLabel(flagEnd_);
            } else {
                mw.visitInsn(ACONST_NULL);
            }
            // cast
            mw.visitTypeInsn(CHECKCAST, type(fieldClass));
            mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
        }
    }
    for (int i = 0; i < fieldListSize; ++i) {
        FieldInfo fieldInfo = context.fieldInfoList[i];
        Class<?> fieldClass = fieldInfo.fieldClass;
        Type fieldType = fieldInfo.fieldType;
        Label notMatch_ = new Label();
        if (fieldClass == boolean.class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldBoolean", "([C)Z");
            mw.visitVarInsn(ISTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == byte.class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldInt", "([C)I");
            mw.visitVarInsn(ISTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == short.class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldInt", "([C)I");
            mw.visitVarInsn(ISTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == int.class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldInt", "([C)I");
            mw.visitVarInsn(ISTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == long.class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldLong", "([C)J");
            mw.visitVarInsn(LSTORE, context.var(fieldInfo.name + "_asm", 2));
        } else if (fieldClass == float.class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldFloat", "([C)F");
            mw.visitVarInsn(FSTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == double.class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldDouble", "([C)D");
            mw.visitVarInsn(DSTORE, context.var(fieldInfo.name + "_asm", 2));
        } else if (fieldClass == String.class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldString", "([C)Ljava/lang/String;");
            mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == int[].class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldIntArray", "([C)[I");
            mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == float[].class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldFloatArray", "([C)[F");
            mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass == float[][].class) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldFloatArray2", "([C)[[F");
            mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
        } else if (fieldClass.isEnum()) {
            mw.visitVarInsn(ALOAD, 0);
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            _getFieldDeser(context, mw, fieldInfo);
            mw.visitMethodInsn(INVOKEVIRTUAL, type(JavaBeanDeserializer.class), "scanEnum", "(L" + JSONLexerBase + ";[C" + desc(ObjectDeserializer.class) + ")Ljava/lang/Enum;");
            // cast
            mw.visitTypeInsn(CHECKCAST, type(fieldClass));
            mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
        //            } else if (fieldClass.isEnum()) {
        //                mw.visitVarInsn(ALOAD, context.var("lexer"));
        //                mw.visitVarInsn(ALOAD, 0);
        //                mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
        //                Label enumNull_ = new Label();
        //                mw.visitInsn(ACONST_NULL);
        //                mw.visitTypeInsn(CHECKCAST, type(fieldClass)); // cast
        //                mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
        //
        //                mw.visitVarInsn(ALOAD, 1);
        //
        //                mw.visitMethodInsn(INVOKEVIRTUAL, DefaultJSONParser, "getSymbolTable", "()" + desc(SymbolTable.class));
        //
        //                mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldSymbol",
        //                        "([C" + desc(SymbolTable.class) + ")Ljava/lang/String;");
        //                mw.visitInsn(DUP);
        //                mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm_enumName"));
        //
        //                mw.visitJumpInsn(IFNULL, enumNull_);
        //
        //                mw.visitVarInsn(ALOAD, context.var(fieldInfo.name + "_asm_enumName"));
        //                mw.visitMethodInsn(INVOKEVIRTUAL, type(String.class), "length", "()I");
        //                mw.visitJumpInsn(IFEQ, enumNull_);
        //
        //                mw.visitVarInsn(ALOAD, context.var(fieldInfo.name + "_asm_enumName"));
        //                mw.visitMethodInsn(INVOKESTATIC, type(fieldClass), "valueOf",
        //                        "(Ljava/lang/String;)" + desc(fieldClass));
        //                mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
        //                mw.visitLabel(enumNull_);
        } else if (Collection.class.isAssignableFrom(fieldClass)) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.className, fieldInfo.name + "_asm_prefix__", "[C");
            Class<?> itemClass = TypeUtils.getCollectionItemClass(fieldType);
            if (itemClass == String.class) {
                // cast
                mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(desc(fieldClass)));
                mw.visitMethodInsn(INVOKEVIRTUAL, JSONLexerBase, "scanFieldStringArray", "([CLjava/lang/Class;)" + desc(Collection.class));
                mw.visitVarInsn(ASTORE, context.var(fieldInfo.name + "_asm"));
            } else {
                _deserialze_list_obj(context, mw, reset_, fieldInfo, fieldClass, itemClass, i);
                if (i == fieldListSize - 1) {
                    _deserialize_endCheck(context, mw, reset_);
                }
                continue;
            }
        } else {
            _deserialze_obj(context, mw, reset_, fieldInfo, fieldClass, i);
            if (i == fieldListSize - 1) {
                _deserialize_endCheck(context, mw, reset_);
            }
            continue;
        }
        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitFieldInsn(GETFIELD, JSONLexerBase, "matchStat", "I");
        Label flag_ = new Label();
        // mw.visitInsn(DUP);
        mw.visitJumpInsn(IFLE, flag_);
        _setFlag(mw, context, i);
        mw.visitLabel(flag_);
        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitFieldInsn(GETFIELD, JSONLexerBase, "matchStat", "I");
        mw.visitInsn(DUP);
        mw.visitVarInsn(ISTORE, context.var("matchStat"));
        mw.visitLdcInsn(com.alibaba.fastjson.parser.JSONLexerBase.NOT_MATCH);
        mw.visitJumpInsn(IF_ICMPEQ, reset_);
        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitFieldInsn(GETFIELD, JSONLexerBase, "matchStat", "I");
        mw.visitJumpInsn(IFLE, notMatch_);
        // increment matchedCount
        mw.visitVarInsn(ILOAD, context.var("matchedCount"));
        mw.visitInsn(ICONST_1);
        mw.visitInsn(IADD);
        mw.visitVarInsn(ISTORE, context.var("matchedCount"));
        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitFieldInsn(GETFIELD, JSONLexerBase, "matchStat", "I");
        mw.visitLdcInsn(com.alibaba.fastjson.parser.JSONLexerBase.END);
        mw.visitJumpInsn(IF_ICMPEQ, end_);
        mw.visitLabel(notMatch_);
        if (i == fieldListSize - 1) {
            mw.visitVarInsn(ALOAD, context.var("lexer"));
            mw.visitFieldInsn(GETFIELD, JSONLexerBase, "matchStat", "I");
            mw.visitLdcInsn(com.alibaba.fastjson.parser.JSONLexerBase.END);
            mw.visitJumpInsn(IF_ICMPNE, reset_);
        }
    }
    // endFor
    mw.visitLabel(end_);
    if (!context.clazz.isInterface() && !Modifier.isAbstract(context.clazz.getModifiers())) {
        _batchSet(context, mw);
    }
    mw.visitLabel(return_);
    _setContext(context, mw);
    mw.visitVarInsn(ALOAD, context.var("instance"));
    Method buildMethod = context.beanInfo.buildMethod;
    if (buildMethod != null) {
        mw.visitMethodInsn(INVOKEVIRTUAL, type(context.getInstClass()), buildMethod.getName(), "()" + desc(buildMethod.getReturnType()));
    }
    mw.visitInsn(ARETURN);
    mw.visitLabel(reset_);
    _batchSet(context, mw);
    mw.visitVarInsn(ALOAD, 0);
    mw.visitVarInsn(ALOAD, 1);
    mw.visitVarInsn(ALOAD, 2);
    mw.visitVarInsn(ALOAD, 3);
    mw.visitVarInsn(ALOAD, context.var("instance"));
    mw.visitVarInsn(ILOAD, 4);
    int flagSize = (fieldListSize / 32);
    if (fieldListSize != 0 && (fieldListSize % 32) != 0) {
        flagSize += 1;
    }
    if (flagSize == 1) {
        mw.visitInsn(ICONST_1);
    } else {
        mw.visitIntInsn(BIPUSH, flagSize);
    }
    mw.visitIntInsn(NEWARRAY, T_INT);
    for (int i = 0; i < flagSize; ++i) {
        mw.visitInsn(DUP);
        if (i == 0) {
            mw.visitInsn(ICONST_0);
        } else if (i == 1) {
            mw.visitInsn(ICONST_1);
        } else {
            mw.visitIntInsn(BIPUSH, i);
        }
        mw.visitVarInsn(ILOAD, context.var("_asm_flag_" + i));
        mw.visitInsn(IASTORE);
    }
    mw.visitMethodInsn(INVOKEVIRTUAL, type(JavaBeanDeserializer.class), "parseRest", "(L" + DefaultJSONParser + ";Ljava/lang/reflect/Type;Ljava/lang/Object;Ljava/lang/Object;I[I)Ljava/lang/Object;");
    // cast
    mw.visitTypeInsn(CHECKCAST, type(context.clazz));
    mw.visitInsn(ARETURN);
    mw.visitLabel(super_);
    mw.visitVarInsn(ALOAD, 0);
    mw.visitVarInsn(ALOAD, 1);
    mw.visitVarInsn(ALOAD, 2);
    mw.visitVarInsn(ALOAD, 3);
    mw.visitVarInsn(ILOAD, 4);
    //
    mw.visitMethodInsn(//
    INVOKESPECIAL, //
    type(JavaBeanDeserializer.class), //
    "deserialze", "(L" + DefaultJSONParser + ";Ljava/lang/reflect/Type;Ljava/lang/Object;I)Ljava/lang/Object;");
    mw.visitInsn(ARETURN);
    mw.visitMaxs(10, context.variantIndex);
    mw.visitEnd();
}