Examples of com.alibaba.fastjson.asm.Label

com.alibaba.fastjson.asm.Label
A label represents a position in the bytecode of a method. Labels are used for jump, goto, and switch instructions, and for try catch blocks. A label designates the instruction that is just after. Note however that there can be other elements between a label and the instruction it designates (such as other labels, stack map frames, line numbers, etc.). @author Eric Bruneton

            if (format.trim().length() == 0) {
                format = null;
            }
        }


        Label _not_null = new Label();


        mw.visitVarInsn(ALOAD, context.processValue());
        mw.visitJumpInsn(IFNONNULL, _not_null); // if (obj == null)
        _if_write_null(mw, fieldInfo, context);
        mw.visitJumpInsn(GOTO, _end);

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    }


    private void _if_write_null(MethodVisitor mw, FieldInfo fieldInfo, Context context) {
        Class<?> propertyClass = fieldInfo.getFieldClass();


        Label _if = new Label();
        Label _else = new Label();
        Label _write_null = new Label();
        Label _end_if = new Label();


        mw.visitLabel(_if);


        // out.isEnabled(Serializer.WriteMapNullValue)
        boolean writeNull = false;

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        MethodVisitor mw = cw.visitMethod(ACC_PUBLIC, "deserialze", "(" + getDesc(DefaultJSONParser.class)
                                                                    + getDesc(Type.class)
                                                                    + "Ljava/lang/Object;)Ljava/lang/Object;", null,
                                          null);


        Label reset_ = new Label();
        Label super_ = new Label();
        Label return_ = new Label();
        Label end_ = new Label();


        mw.visitVarInsn(ALOAD, 1);
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getLexer", "()" + getDesc(JSONLexer.class));
        mw.visitVarInsn(ASTORE, context.var("lexer"));


        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitFieldInsn(GETSTATIC, getType(Feature.class), "SortFeidFastMatch", "L" + getType(Feature.class) + ";");
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "isEnabled", "(" + "L" + getType(Feature.class)
                                                                                   + ";" + ")Z");
        mw.visitJumpInsn(IFEQ, super_);


        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitLdcInsn(context.getClazz().getName());
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanType", "(Ljava/lang/String;)I");


        mw.visitFieldInsn(GETSTATIC, getType(JSONLexer.class), "NOT_MATCH", "I");
        mw.visitJumpInsn(IF_ICMPEQ, super_);


        mw.visitVarInsn(ALOAD, 1); // parser
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getContext",
                           "()Lcom/alibaba/fastjson/parser/ParseContext;");
        mw.visitVarInsn(ASTORE, context.var("mark_context"));


        // ParseContext context = parser.getContext();
        mw.visitInsn(ICONST_0);
        mw.visitVarInsn(ISTORE, context.var("matchedCount"));


        Constructor<?> defaultConstructor = context.getBeanInfo().getDefaultConstructor();


        // create instance
        if (context.getClazz().isInterface()) {
            mw.visitVarInsn(ALOAD, 0);
            mw.visitVarInsn(ALOAD, 1);
            mw.visitMethodInsn(INVOKESPECIAL, getType(ASMJavaBeanDeserializer.class), "createInstance",
                               "(" + getDesc(DefaultJSONParser.class) + ")Ljava/lang/Object;");
            mw.visitTypeInsn(CHECKCAST, getType(context.getClazz())); // cast
            mw.visitVarInsn(ASTORE, context.var("instance"));
        } else {
            if (defaultConstructor != null) {
                if (Modifier.isPublic(defaultConstructor.getModifiers())) {
                    mw.visitTypeInsn(NEW, getType(context.getClazz()));
                    mw.visitInsn(DUP);
                    mw.visitMethodInsn(INVOKESPECIAL, getType(context.getClazz()), "<init>", "()V");


                    mw.visitVarInsn(ASTORE, context.var("instance"));
                } else {
                    mw.visitVarInsn(ALOAD, 0);
                    mw.visitVarInsn(ALOAD, 1);
                    mw.visitMethodInsn(INVOKESPECIAL, getType(ASMJavaBeanDeserializer.class), "createInstance",
                                       "(" + getDesc(DefaultJSONParser.class) + ")Ljava/lang/Object;");
                    mw.visitTypeInsn(CHECKCAST, getType(context.getClazz())); // cast
                    mw.visitVarInsn(ASTORE, context.var("instance"));
                }
            } else {
                mw.visitInsn(ACONST_NULL);
                mw.visitTypeInsn(CHECKCAST, getType(context.getClazz())); // cast
                mw.visitVarInsn(ASTORE, context.var("instance"));
            }
        }


        {
            mw.visitVarInsn(ALOAD, 1); // parser
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getContext",
                               "()" + ASMUtils.getDesc(ParseContext.class));
            mw.visitVarInsn(ASTORE, context.var("context"));


            mw.visitVarInsn(ALOAD, 1); // parser
            mw.visitVarInsn(ALOAD, context.var("context"));
            mw.visitVarInsn(ALOAD, context.var("instance"));
            mw.visitVarInsn(ALOAD, 3); // fieldName
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "setContext",
                               "(" + ASMUtils.getDesc(ParseContext.class) + "Ljava/lang/Object;Ljava/lang/Object;)"
                                       + ASMUtils.getDesc(ParseContext.class));
            mw.visitVarInsn(ASTORE, context.var("childContext"));
        }


        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitFieldInsn(GETFIELD, getType(JSONLexer.class), "matchStat", "I");
        mw.visitFieldInsn(GETSTATIC, getType(JSONLexer.class), "END", "I");
        mw.visitJumpInsn(IF_ICMPEQ, return_);


        mw.visitInsn(ICONST_0); // UNKOWN
        mw.visitIntInsn(ISTORE, context.var("matchStat"));


        int fieldListSize = context.getFieldInfoList().size();
        for (int i = 0; i < fieldListSize; i += 32) {
            mw.visitInsn(ICONST_0);
            mw.visitVarInsn(ISTORE, context.var("_asm_flag_" + (i / 32)));
        }


        // declare and init
        for (int i = 0; i < fieldListSize; ++i) {
            FieldInfo fieldInfo = context.getFieldInfoList().get(i);
            Class<?> fieldClass = fieldInfo.getFieldClass();


            if (fieldClass == boolean.class //
                || fieldClass == byte.class //
                || fieldClass == short.class //
                || fieldClass == int.class) {
                mw.visitInsn(ICONST_0);
                mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));
            } else if (fieldClass == long.class) {
                mw.visitInsn(LCONST_0);
                mw.visitVarInsn(LSTORE, context.var(fieldInfo.getName() + "_asm", 2));
            } else if (fieldClass == float.class) {
                mw.visitInsn(FCONST_0);
                mw.visitVarInsn(FSTORE, context.var(fieldInfo.getName() + "_asm"));
            } else if (fieldClass == double.class) {
                mw.visitInsn(DCONST_0);
                mw.visitVarInsn(DSTORE, context.var(fieldInfo.getName() + "_asm", 2));
            } else {
                if (fieldClass == String.class) {
                    Label flagEnd_ = new Label();
                    mw.visitVarInsn(ALOAD, context.var("lexer"));
                    mw.visitFieldInsn(GETSTATIC, getType(Feature.class), "InitStringFieldAsEmpty",
                                      "L" + getType(Feature.class) + ";");
                    mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "isEnabled", "(" + "L"
                                                                                               + getType(Feature.class)
                                                                                               + ";" + ")Z");
                    mw.visitJumpInsn(IFEQ, flagEnd_);
                    _setFlag(mw, context, i);
                    mw.visitLabel(flagEnd_);


                    mw.visitVarInsn(ALOAD, context.var("lexer"));
                    mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "stringDefaultValue",
                                       "()Ljava/lang/String;");
                } else {
                    mw.visitInsn(ACONST_NULL);
                }


                mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
                mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
            }
        }


        for (int i = 0; i < fieldListSize; ++i) {
            FieldInfo fieldInfo = context.getFieldInfoList().get(i);
            Class<?> fieldClass = fieldInfo.getFieldClass();
            Type fieldType = fieldInfo.getFieldType();


            Label notMatch_ = new Label();


            if (fieldClass == boolean.class) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldBoolean", "([C)Z");
                mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));
            } else if (fieldClass == byte.class) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldInt", "([C)I");
                mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));


            } else if (fieldClass == short.class) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldInt", "([C)I");
                mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));


            } else if (fieldClass == int.class) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldInt", "([C)I");
                mw.visitVarInsn(ISTORE, context.var(fieldInfo.getName() + "_asm"));


            } else if (fieldClass == long.class) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldLong", "([C)J");
                mw.visitVarInsn(LSTORE, context.var(fieldInfo.getName() + "_asm", 2));


            } else if (fieldClass == float.class) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldFloat", "([C)F");
                mw.visitVarInsn(FSTORE, context.var(fieldInfo.getName() + "_asm"));


            } else if (fieldClass == double.class) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldDouble", "([C)D");
                mw.visitVarInsn(DSTORE, context.var(fieldInfo.getName() + "_asm", 2));


            } else if (fieldClass == String.class) {
                Label notEnd_ = new Label();


                mw.visitIntInsn(ILOAD, context.var("matchStat"));
                mw.visitInsn(ICONST_4); // END
                mw.visitJumpInsn(IF_ICMPNE, notEnd_);


                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "stringDefaultValue",
                                   "()Ljava/lang/String;");
                mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
                mw.visitJumpInsn(GOTO, notMatch_);


                mw.visitLabel(notEnd_);


                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldString",
                                   "([C)Ljava/lang/String;");
                mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));


            } else if (fieldClass.isEnum()) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
                Label enumNull_ = new Label();
                mw.visitInsn(ACONST_NULL);
                mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
                mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));


                mw.visitVarInsn(ALOAD, 1);
                mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getSymbolTable",
                                   "()" + getDesc(SymbolTable.class));


                mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldSymbol",
                                   "([C" + getDesc(SymbolTable.class) + ")Ljava/lang/String;");
                mw.visitInsn(DUP);
                mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm_enumName"));


                mw.visitJumpInsn(IFNULL, enumNull_);
                mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm_enumName"));
                mw.visitMethodInsn(INVOKESTATIC, getType(fieldClass), "valueOf", "(Ljava/lang/String;)"
                                                                                 + getDesc(fieldClass));
                mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
                mw.visitLabel(enumNull_);


            } else if (Collection.class.isAssignableFrom(fieldClass)) {
                mw.visitVarInsn(ALOAD, context.var("lexer"));
                mw.visitVarInsn(ALOAD, 0);
                mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");


                Type actualTypeArgument = ((ParameterizedType) fieldType).getActualTypeArguments()[0];


                if (actualTypeArgument instanceof Class) {
                    Class<?> itemClass = (Class<?>) actualTypeArgument;


                    if (!Modifier.isPublic(itemClass.getModifiers())) {
                        throw new ASMException("can not create ASMParser");
                    }


                    if (itemClass == String.class) {
                        mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(fieldClass))); // cast
                        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "scanFieldStringArray",
                                           "([CLjava/lang/Class;)" + getDesc(Collection.class));
                        mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
                    } else {
                        _deserialze_list_obj(context, mw, reset_, fieldInfo, fieldClass, itemClass, i);


                        if (i == fieldListSize - 1) {
                            _deserialize_endCheck(context, mw, reset_);
                        }
                        continue;
                    }
                } else {
                    throw new ASMException("can not create ASMParser");
                }


            } 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, getType(JSONLexer.class), "matchStat", "I");
            Label flag_ = new Label();
            // mw.visitInsn(DUP);
            mw.visitJumpInsn(IFLE, flag_);
            _setFlag(mw, context, i);
            mw.visitLabel(flag_);

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        for (int i = 0, size = context.getFieldInfoList().size(); i < size; ++i) {
            FieldInfo fieldInfo = context.getFieldInfoList().get(i);
            Class<?> fieldClass = fieldInfo.getFieldClass();
            Type fieldType = fieldInfo.getFieldType();


            Label notSet_ = new Label();
            _isFlag(mw, context, i, notSet_);


            if (fieldClass == boolean.class) {
                mw.visitVarInsn(ALOAD, context.var("instance"));
                mw.visitVarInsn(ILOAD, context.var(fieldInfo.getName() + "_asm"));

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        mw.visitVarInsn(ALOAD, 1); // parser
        mw.visitVarInsn(ALOAD, context.var("context"));
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "setContext",
                           "(" + ASMUtils.getDesc(ParseContext.class) + ")V");


        Label endIf_ = new Label();
        mw.visitVarInsn(ALOAD, context.var("childContext"));
        mw.visitJumpInsn(IFNULL, endIf_);


        mw.visitVarInsn(ALOAD, context.var("childContext"));
        mw.visitVarInsn(ALOAD, context.var("instance"));

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        mw.visitLabel(endIf_);
    }


    private void _deserialize_endCheck(Context context, MethodVisitor mw, Label reset_) {
        Label _end_if = new Label();
        // Label nextToken_ = new Label();


        // mw.visitFieldInsn(GETSTATIC, getType(System.class), "out", "Ljava/io/PrintStream;");
        // mw.visitIntInsn(ILOAD, context.var("matchedCount"));
        // mw.visitMethodInsn(INVOKEVIRTUAL, getType(java.io.PrintStream.class), "println", "(I)V");

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        mw.visitLabel(_end_if);
    }


    private void _deserialze_list_obj(Context context, MethodVisitor mw, Label reset_, FieldInfo fieldInfo,
                                      Class<?> fieldClass, Class<?> itemType, int i) {
        Label matched_ = new Label();
        Label _end_if = new Label();


        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "matchField", "([C)Z");
        mw.visitJumpInsn(IFNE, matched_);
        mw.visitInsn(ACONST_NULL);
        mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));


        mw.visitJumpInsn(GOTO, _end_if);


        mw.visitLabel(matched_);
        _setFlag(mw, context, i);


        Label notNull_ = new Label();
        mw.visitVarInsn(ALOAD, 0);
        mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_list_item_deser__",
                          getDesc(ObjectDeserializer.class));
        mw.visitJumpInsn(IFNONNULL, notNull_);


        mw.visitVarInsn(ALOAD, 0);


        mw.visitVarInsn(ALOAD, 1);
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getConfig", "()"
                                                                                         + getDesc(ParserConfig.class));
        mw.visitLdcInsn(com.alibaba.fastjson.asm.Type.getType(getDesc(itemType)));
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(ParserConfig.class), "getDeserializer",
                           "(" + getDesc(Type.class) + ")" + getDesc(ObjectDeserializer.class));


        mw.visitFieldInsn(PUTFIELD, context.getClassName(), fieldInfo.getName() + "_asm_list_item_deser__",
                          getDesc(ObjectDeserializer.class));


        mw.visitLabel(notNull_);


        Label valueNotNull_ = new Label();
        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
        mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "NULL", "I");
        mw.visitJumpInsn(IF_ICMPNE, valueNotNull_);


        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "COMMA", "I");
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "nextToken", "(I)V");


        mw.visitInsn(ACONST_NULL);
        mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
        mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));
        // loop_end_


        mw.visitLabel(valueNotNull_);
        // if (lexer.token() != JSONToken.LBRACKET) reset
        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "token", "()I");
        mw.visitFieldInsn(GETSTATIC, getType(JSONToken.class), "LBRACKET", "I");


        mw.visitJumpInsn(IF_ICMPNE, reset_);


        mw.visitVarInsn(ALOAD, 0);
        mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_list_item_deser__",
                          getDesc(ObjectDeserializer.class));
        mw.visitMethodInsn(INVOKEINTERFACE, getType(ObjectDeserializer.class), "getFastMatchToken", "()I");
        mw.visitVarInsn(ISTORE, context.var("fastMatchToken"));


        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitVarInsn(ILOAD, context.var("fastMatchToken"));
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "nextToken", "(I)V");


        if (fieldClass.isAssignableFrom(ArrayList.class)) {
            mw.visitTypeInsn(NEW, getType(ArrayList.class));
            mw.visitInsn(DUP);
            mw.visitMethodInsn(INVOKESPECIAL, getType(ArrayList.class), "<init>", "()V");
        } else if (fieldClass.isAssignableFrom(LinkedList.class)) {
            mw.visitTypeInsn(NEW, getType(LinkedList.class));
            mw.visitInsn(DUP);
            mw.visitMethodInsn(INVOKESPECIAL, getType(LinkedList.class), "<init>", "()V");
        } else if (fieldClass.isAssignableFrom(HashSet.class)) {
            mw.visitTypeInsn(NEW, getType(HashSet.class));
            mw.visitInsn(DUP);
            mw.visitMethodInsn(INVOKESPECIAL, getType(HashSet.class), "<init>", "()V");
        } else if (fieldClass.isAssignableFrom(TreeSet.class)) {
            mw.visitTypeInsn(NEW, getType(TreeSet.class));
            mw.visitInsn(DUP);
            mw.visitMethodInsn(INVOKESPECIAL, getType(TreeSet.class), "<init>", "()V");
        } else {
            mw.visitTypeInsn(NEW, getType(fieldClass));
            mw.visitInsn(DUP);
            mw.visitMethodInsn(INVOKESPECIAL, getType(fieldClass), "<init>", "()V");
        }


        mw.visitTypeInsn(CHECKCAST, getType(fieldClass)); // cast
        mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));


        { // setContext
            mw.visitVarInsn(ALOAD, 1);
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "getContext",
                               "()" + ASMUtils.getDesc(ParseContext.class));
            mw.visitVarInsn(ASTORE, context.var("listContext"));


            mw.visitVarInsn(ALOAD, 1); // parser
            mw.visitVarInsn(ALOAD, context.var(fieldInfo.getName() + "_asm"));
            mw.visitLdcInsn(fieldInfo.getName());
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(DefaultJSONParser.class), "setContext",
                               "(Ljava/lang/Object;Ljava/lang/Object;)" + ASMUtils.getDesc(ParseContext.class));
            mw.visitInsn(POP);
        }


        Label loop_ = new Label();
        Label loop_end_ = new Label();


        // for (;;) {
        mw.visitInsn(ICONST_0);
        mw.visitVarInsn(ISTORE, context.var("i"));
        mw.visitLabel(loop_);

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        mw.visitLabel(_end_if);
    }


    private void _deserialze_obj(Context context, MethodVisitor mw, Label reset_, FieldInfo fieldInfo,
                                 Class<?> fieldClass, int i) {
        Label matched_ = new Label();
        Label _end_if = new Label();


        mw.visitVarInsn(ALOAD, context.var("lexer"));
        mw.visitVarInsn(ALOAD, 0);
        mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_prefix__", "[C");
        mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONLexer.class), "matchField", "([C)Z");
        mw.visitJumpInsn(IFNE, matched_);
        mw.visitInsn(ACONST_NULL);
        mw.visitVarInsn(ASTORE, context.var(fieldInfo.getName() + "_asm"));


        mw.visitJumpInsn(GOTO, _end_if);


        mw.visitLabel(matched_);


        _setFlag(mw, context, i);


        // increment matchedCount
        mw.visitVarInsn(ILOAD, context.var("matchedCount"));
        mw.visitInsn(ICONST_1);
        mw.visitInsn(IADD);
        mw.visitVarInsn(ISTORE, context.var("matchedCount"));


        Label notNull_ = new Label();
        mw.visitVarInsn(ALOAD, 0);
        mw.visitFieldInsn(GETFIELD, context.getClassName(), fieldInfo.getName() + "_asm_deser__",
                          getDesc(ObjectDeserializer.class));
        mw.visitJumpInsn(IFNONNULL, notNull_);

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            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",

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        return (ObjectSerializer) instance;
    }


    private void generateWriteMethod(Class<?> clazz, MethodVisitor mw, List<FieldInfo> getters, Context context)
                                                                                                                throws Exception {
        Label end = new Label();


        int size = getters.size();


        {
            // 格式化输出不走asm 优化
            Label endFormat_ = new Label();
            Label notNull_ = new Label();
            mw.visitVarInsn(ALOAD, context.var("out"));
            mw.visitFieldInsn(GETSTATIC, getType(SerializerFeature.class), "PrettyFormat",
                              "L" + getType(SerializerFeature.class) + ";");
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(SerializeWriter.class), "isEnabled",
                               "(" + "L" + getType(SerializerFeature.class) + ";" + ")Z");
            mw.visitJumpInsn(IFEQ, endFormat_);


            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.getClassName(), "nature", getDesc(JavaBeanSerializer.class));
            mw.visitJumpInsn(IFNONNULL, notNull_);


            initNature(clazz, mw, context);


            // /////
            mw.visitLabel(notNull_);


            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.getClassName(), "nature", getDesc(JavaBeanSerializer.class));
            mw.visitVarInsn(ALOAD, 1);
            mw.visitVarInsn(ALOAD, 2);
            mw.visitVarInsn(ALOAD, 3);
            mw.visitVarInsn(ALOAD, 4);
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(JavaBeanSerializer.class), "write",
                               "(Lcom/alibaba/fastjson/serializer/JSONSerializer;Ljava/lang/Object;Ljava/lang/Object;Ljava/lang/reflect/Type;)V");
            mw.visitInsn(RETURN);


            mw.visitLabel(endFormat_);
        }


        {
            // if (serializer.containsReference(object)) {


            Label endRef_ = new Label();
            Label notNull_ = new Label();


            mw.visitVarInsn(ALOAD, context.serializer());
            mw.visitVarInsn(ALOAD, context.obj());
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONSerializer.class), "containsReference",
                               "(Ljava/lang/Object;)Z");
            mw.visitJumpInsn(IFEQ, endRef_);


            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.getClassName(), "nature", getDesc(JavaBeanSerializer.class));
            mw.visitJumpInsn(IFNONNULL, notNull_);


            initNature(clazz, mw, context);


            // /////
            mw.visitLabel(notNull_);
            mw.visitVarInsn(ALOAD, 0);
            mw.visitFieldInsn(GETFIELD, context.getClassName(), "nature", getDesc(JavaBeanSerializer.class));
            mw.visitVarInsn(ALOAD, 1);
            mw.visitVarInsn(ALOAD, 2);
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(JavaBeanSerializer.class), "writeReference",
                               "(Lcom/alibaba/fastjson/serializer/JSONSerializer;Ljava/lang/Object;)V");


            mw.visitInsn(RETURN);


            mw.visitLabel(endRef_);
        }


        {
            mw.visitVarInsn(ALOAD, context.serializer());
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONSerializer.class), "getContext",
                               "()Lcom/alibaba/fastjson/serializer/SerialContext;");
            mw.visitVarInsn(ASTORE, context.var("parent"));


            mw.visitVarInsn(ALOAD, context.serializer());
            mw.visitVarInsn(ALOAD, context.var("parent"));
            mw.visitVarInsn(ALOAD, context.obj());
            mw.visitVarInsn(ALOAD, context.paramFieldName());
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONSerializer.class), "setContext",
                               "(Lcom/alibaba/fastjson/serializer/SerialContext;Ljava/lang/Object;Ljava/lang/Object;)V");
        }


        // SEPERATO
        {
            Label end_ = new Label();
            Label else_ = new Label();
            Label writeClass_ = new Label();


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


            mw.visitVarInsn(ALOAD, context.serializer());
            mw.visitVarInsn(ALOAD, context.paramFieldType());
            mw.visitVarInsn(ALOAD, context.obj());
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(JSONSerializer.class), "isWriteClassName",
                               "(Ljava/lang/reflect/Type;Ljava/lang/Object;)Z");
            mw.visitJumpInsn(IFEQ, else_);


            // mw.visitVarInsn(ALOAD, context.paramFieldType());
            // mw.visitJumpInsn(IFNULL, writeClass_);


            // IFNULL
            mw.visitVarInsn(ALOAD, context.paramFieldType());
            mw.visitVarInsn(ALOAD, context.obj());
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(Object.class), "getClass", "()Ljava/lang/Class;");
            mw.visitJumpInsn(IF_ACMPEQ, else_);


            mw.visitLabel(writeClass_);
            mw.visitVarInsn(ALOAD, context.var("out"));
            mw.visitLdcInsn("{\"" + JSON.DEFAULT_TYPE_KEY + "\":\"" + clazz.getName() + "\"");
            mw.visitMethodInsn(INVOKEVIRTUAL, getType(SerializeWriter.class), "write", "(Ljava/lang/String;)V");
            mw.visitVarInsn(BIPUSH, ',');
            mw.visitJumpInsn(GOTO, end_);


            mw.visitLabel(else_);
            mw.visitVarInsn(BIPUSH, '{');


            mw.visitLabel(end_);
        }


        mw.visitVarInsn(ISTORE, context.var("seperator"));


        for (int i = 0; i < size; ++i) {
            FieldInfo property = getters.get(i);
            Class<?> propertyClass = property.getFieldClass();


            mw.visitLdcInsn(property.getName());
            mw.visitVarInsn(ASTORE, context.fieldName());


            if (propertyClass == byte.class) {
                _byte(clazz, mw, property, context);
            } else if (propertyClass == short.class) {
                _short(clazz, mw, property, context);
            } else if (propertyClass == int.class) {
                _int(clazz, mw, property, context);
            } else if (propertyClass == long.class) {
                _long(clazz, mw, property, context);
            } else if (propertyClass == float.class) {
                _float(clazz, mw, property, context);
            } else if (propertyClass == double.class) {
                _double(clazz, mw, property, context);
            } else if (propertyClass == boolean.class) {
                _boolean(clazz, mw, property, context);
            } else if (propertyClass == char.class) {
                _char(clazz, mw, property, context);
            } else if (propertyClass == String.class) {
                _string(clazz, mw, property, context);
            } else if (propertyClass == BigDecimal.class) {
                _decimal(clazz, mw, property, context);
            } else if (List.class.isAssignableFrom(propertyClass)) {
                _list(clazz, mw, property, context);
                // _object(clazz, mw, property, context);
            } else if (propertyClass.isEnum()) {
                _enum(clazz, mw, property, context);
            } else {
                _object(clazz, mw, property, context);
            }
        }


        Label _if = new Label();
        Label _else = new Label();
        Label _end_if = new Label();


        mw.visitLabel(_if);


        // if (seperator == '{')
        mw.visitVarInsn(ILOAD, context.var("seperator"));

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Related Classes of com.alibaba.fastjson.asm.Label

com.alibaba.fastjson.parser.deserializer.ASMDeserializerFactory

com.alibaba.fastjson.serializer.ASMSerializerFactory

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