Java 类com.alibaba.fastjson.asm.ClassWriter 实例源码

项目：GitHub 文件：ASMDeserializerFactory.java

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();
}

项目：GitHub 文件：ASMDeserializerFactory.java

public ObjectDeserializer createJavaBeanDeserializer(ParserConfig config, JavaBeanInfo beanInfo) throws Exception {
    Class<?> clazz = beanInfo.clazz;
    if (clazz.isPrimitive()) {
        throw new IllegalArgumentException("not support type :" + clazz.getName());
    }

    String className = "FastjsonASMDeserializer_" + seed.incrementAndGet() + "_" + clazz.getSimpleName();
    String packageName = ASMDeserializerFactory.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, type(JavaBeanDeserializer.class), null);



    _init(cw, new Context(classNameType, config, beanInfo, 3));
    _createInstance(cw, new Context(classNameType, config, beanInfo, 3));
    _deserialze(cw, new Context(classNameType, config, beanInfo, 5));

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

    Class<?> deserClass = classLoader.defineClassPublic(classNameFull, code, 0, code.length);
    Constructor<?> constructor = deserClass.getConstructor(ParserConfig.class, JavaBeanInfo.class);
    Object instance = constructor.newInstance(config, beanInfo);

    return (ObjectDeserializer) instance;
}

项目：boohee_v5.6 文件：ASMDeserializerFactory.java

private void _createInstance(ClassWriter cw, Context context) {
    MethodVisitor mw = cw.visitMethod(1, "createInstance", "(Lcom/alibaba/fastjson/parser/DefaultJSONParser;Ljava/lang/reflect/Type;)Ljava/lang/Object;", null, null);
    mw.visitTypeInsn(187, ASMUtils.getType(context.getClazz()));
    mw.visitInsn(89);
    mw.visitMethodInsn(183, ASMUtils.getType(context.getClazz()), "<init>", "()V");
    mw.visitInsn(176);
    mw.visitMaxs(3, 3);
    mw.visitEnd();
}

项目：uavstack 文件：ASMDeserializerFactory.java

private void _createInstance(ClassWriter cw, Context context) {
    MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "createInstance"
                                      , "(Lcom/alibaba/fastjson/parser/DefaultJSONParser;Ljava/lang/reflect/Type;)Ljava/lang/Object;",
                                      null, null);

    mw.visitTypeInsn(NEW, getType(context.getClazz()));
    mw.visitInsn(DUP);
    mw.visitMethodInsn(INVOKESPECIAL, getType(context.getClazz()), "<init>", "()V");

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

项目：itmarry 文件：ASMDeserializerFactory.java

public ObjectDeserializer createJavaBeanDeserializer(ParserConfig config, Class<?> clazz, Type type)
                                                                                                    throws Exception {
    if (clazz.isPrimitive()) {
        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"));

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

    Constructor<?> constructor = exampleClass.getConstructor(ParserConfig.class, Class.class);
    Object instance = constructor.newInstance(config, clazz);

    return (ObjectDeserializer) instance;
}

项目：itmarry 文件：ASMDeserializerFactory.java

private void _createInstance(ClassWriter cw, Context context) {
    MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "createInstance", "(" + getDesc(DefaultJSONParser.class)
                                                                    + getDesc(Type.class) + ")Ljava/lang/Object;",
                                      null, null);

    mw.visitTypeInsn(NEW, getType(context.getClazz()));
    mw.visitInsn(DUP);
    mw.visitMethodInsn(INVOKESPECIAL, getType(context.getClazz()), "<init>", "()V");

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

项目：boohee_v5.6 文件：ASMDeserializerFactory.java

public ObjectDeserializer createJavaBeanDeserializer(ParserConfig config, Class<?> clazz, Type type) throws Exception {
    Exception ex;
    Throwable th;
    if (clazz.isPrimitive()) {
        throw new IllegalArgumentException("not support type :" + clazz.getName());
    }
    String className = getGenClassName(clazz);
    ClassWriter cw = new ClassWriter();
    cw.visit(49, 33, 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 {
            FileOutputStream fos2 = new FileOutputStream(JSON.DUMP_CLASS + File.separator + className + ".class");
            try {
                fos2.write(code);
                if (fos2 != null) {
                    fos2.close();
                }
            } catch (Exception e) {
                ex = e;
                fos = fos2;
                try {
                    System.err.println("FASTJSON dump class:" + className + "失败:" + ex.getMessage());
                    if (fos != null) {
                        fos.close();
                    }
                    return (ObjectDeserializer) this.classLoader.defineClassPublic(className, code, 0, code.length).getConstructor(new Class[]{ParserConfig.class, Class.class}).newInstance(new Object[]{config, clazz});
                } catch (Throwable th2) {
                    th = th2;
                    if (fos != null) {
                        fos.close();
                    }
                    throw th;
                }
            } catch (Throwable th3) {
                th = th3;
                fos = fos2;
                if (fos != null) {
                    fos.close();
                }
                throw th;
            }
        } catch (Exception e2) {
            ex = e2;
            System.err.println("FASTJSON dump class:" + className + "失败:" + ex.getMessage());
            if (fos != null) {
                fos.close();
            }
            return (ObjectDeserializer) this.classLoader.defineClassPublic(className, code, 0, code.length).getConstructor(new Class[]{ParserConfig.class, Class.class}).newInstance(new Object[]{config, clazz});
        }
    }
    return (ObjectDeserializer) this.classLoader.defineClassPublic(className, code, 0, code.length).getConstructor(new Class[]{ParserConfig.class, Class.class}).newInstance(new Object[]{config, clazz});
}

项目：boohee_v5.6 文件：ASMDeserializerFactory.java

public FieldDeserializer createStringFieldDeserializer(ParserConfig mapping, Class<?> clazz, FieldInfo fieldInfo) throws Exception {
    Class<?> superClass;
    int INVAKE_TYPE;
    Class<?> fieldClass = fieldInfo.getFieldClass();
    Method method = fieldInfo.getMethod();
    String className = getGenFieldDeserializer(clazz, fieldInfo);
    ClassWriter cw = new ClassWriter();
    if (fieldClass == Integer.TYPE) {
        superClass = IntegerFieldDeserializer.class;
    } else if (fieldClass == Long.TYPE) {
        superClass = LongFieldDeserializer.class;
    } else {
        superClass = StringFieldDeserializer.class;
    }
    if (clazz.isInterface()) {
        INVAKE_TYPE = 185;
    } else {
        INVAKE_TYPE = 182;
    }
    cw.visit(49, 33, className, ASMUtils.getType(superClass), null);
    MethodVisitor mw = cw.visitMethod(1, "<init>", "(Lcom/alibaba/fastjson/parser/ParserConfig;Ljava/lang/Class;Lcom/alibaba/fastjson/util/FieldInfo;)V", null, null);
    mw.visitVarInsn(25, 0);
    mw.visitVarInsn(25, 1);
    mw.visitVarInsn(25, 2);
    mw.visitVarInsn(25, 3);
    mw.visitMethodInsn(183, ASMUtils.getType(superClass), "<init>", "(Lcom/alibaba/fastjson/parser/ParserConfig;Ljava/lang/Class;Lcom/alibaba/fastjson/util/FieldInfo;)V");
    mw.visitInsn(177);
    mw.visitMaxs(4, 6);
    mw.visitEnd();
    if (method != null) {
        if (fieldClass == Integer.TYPE) {
            mw = cw.visitMethod(1, "setValue", "(Ljava/lang/Object;I)V", null, null);
            mw.visitVarInsn(25, 1);
            mw.visitTypeInsn(192, ASMUtils.getType(method.getDeclaringClass()));
            mw.visitVarInsn(21, 2);
            mw.visitMethodInsn(INVAKE_TYPE, ASMUtils.getType(method.getDeclaringClass()), method.getName(), ASMUtils.getDesc(method));
            mw.visitInsn(177);
            mw.visitMaxs(3, 3);
            mw.visitEnd();
        } else if (fieldClass == Long.TYPE) {
            mw = cw.visitMethod(1, "setValue", "(Ljava/lang/Object;J)V", null, null);
            mw.visitVarInsn(25, 1);
            mw.visitTypeInsn(192, ASMUtils.getType(method.getDeclaringClass()));
            mw.visitVarInsn(22, 2);
            mw.visitMethodInsn(INVAKE_TYPE, ASMUtils.getType(method.getDeclaringClass()), method.getName(), ASMUtils.getDesc(method));
            mw.visitInsn(177);
            mw.visitMaxs(3, 4);
            mw.visitEnd();
        } else {
            mw = cw.visitMethod(1, "setValue", "(Ljava/lang/Object;Ljava/lang/Object;)V", null, null);
            mw.visitVarInsn(25, 1);
            mw.visitTypeInsn(192, ASMUtils.getType(method.getDeclaringClass()));
            mw.visitVarInsn(25, 2);
            mw.visitTypeInsn(192, ASMUtils.getType(fieldClass));
            mw.visitMethodInsn(INVAKE_TYPE, ASMUtils.getType(method.getDeclaringClass()), method.getName(), ASMUtils.getDesc(method));
            mw.visitInsn(177);
            mw.visitMaxs(3, 3);
            mw.visitEnd();
        }
    }
    byte[] code = cw.toByteArray();
    return (FieldDeserializer) this.classLoader.defineClassPublic(className, code, 0, code.length).getConstructor(new Class[]{ParserConfig.class, Class.class, FieldInfo.class}).newInstance(new Object[]{mapping, clazz, fieldInfo});
}