improve support custom deserialize & serialize

core/src/main/java/com/alibaba/fastjson2/function/FieldBiConsumer.java

@@ -0,0 +1,19 @@
+package com.alibaba.fastjson2.function;
+
+import java.util.function.BiConsumer;
+
+public final class FieldBiConsumer<T>
+ implements BiConsumer<T, Object> {
+ public final int fieldIndex;
+ public final FieldConsumer<T> consumer;
+
+ public FieldBiConsumer(int fieldIndex, FieldConsumer<T> consumer) {
+ this.fieldIndex = fieldIndex;
+ this.consumer = consumer;
+ }
+
+ @Override
+ public void accept(T object, Object fieldValue) {
+ consumer.accept(object, fieldIndex, fieldValue);
+ }
+}

core/src/main/java/com/alibaba/fastjson2/function/FieldConsumer.java

@@ -0,0 +1,6 @@
+package com.alibaba.fastjson2.function;
+
+@FunctionalInterface
+public interface FieldConsumer<T> {
+ void accept(T object, int fieldIndex, Object fieldValue);
+}

core/src/main/java/com/alibaba/fastjson2/function/FieldSupplier.java

@@ -0,0 +1,6 @@
+package com.alibaba.fastjson2.function;
+
+@FunctionalInterface
+public interface FieldSupplier<T> {
+ Object get(T object, int fieldIndex);
+}

core/src/main/java/com/alibaba/fastjson2/function/FieldSupplierFunction.java

@@ -0,0 +1,19 @@
+package com.alibaba.fastjson2.function;
+
+import java.util.function.Function;
+
+public final class FieldSupplierFunction<T>
+ implements Function<T, Object> {
+ public final FieldSupplier<T> supplier;
+ public final int fieldIndex;
+
+ public FieldSupplierFunction(FieldSupplier<T> supplier, int fieldIndex) {
+ this.supplier = supplier;
+ this.fieldIndex = fieldIndex;
+ }
+
+ @Override
+ public Object apply(T object) {
+ return supplier.get(object, fieldIndex);
+ }
+}

core/src/main/java/com/alibaba/fastjson2/internal/asm/ASMUtils.java

@@ -66,6 +66,7 @@ public class ASMUtils {
  public static final String TYPE_OBJECT_WRITER = ObjectWriter.class.getName().replace('.', '/');
  public static final String TYPE_JSON_WRITER = JSONWriter.class.getName().replace('.', '/');
  public static final String TYPE_FIELD_WRITER = FieldWriter.class.getName().replace('.', '/');
+ public static final String TYPE_OBJECT = "java/lang/Object";
 
  public static final String DESC_FIELD_WRITER = 'L' + FieldWriter.class.getName().replace('.', '/') + ';';
  public static final String DESC_FIELD_WRITER_ARRAY = "[" + DESC_FIELD_WRITER;

core/src/main/java/com/alibaba/fastjson2/reader/FieldReader.java

@@ -10,6 +10,7 @@
 import java.lang.reflect.*;
 import java.time.*;
 import java.util.*;
+import java.util.function.BiConsumer;
 import java.util.function.Function;
 
 import static com.alibaba.fastjson2.util.JDKUtils.UNSAFE;
@@ -529,4 +530,8 @@ static ObjectReader createFormattedObjectReader(Type fieldType, Class fieldClass
  }
  return null;
  }
+
+ public BiConsumer getFunction() {
+ return null;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderBigDecimalFunc.java

@@ -94,4 +94,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readBigDecimal();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderBigIntegerFunc.java

@@ -96,4 +96,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readBigInteger();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderBoolFunc.java

@@ -63,4 +63,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readBool();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderDoubleFunc.java

@@ -67,4 +67,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readDouble();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderFloatFunc.java

@@ -63,4 +63,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readFloat();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderInt16Func.java

@@ -64,4 +64,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return (short) jsonReader.readInt32Value();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderInt32Func.java

@@ -63,4 +63,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readInt32();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderInt64Func.java

@@ -63,4 +63,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readInt64();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderInt8Func.java

@@ -64,4 +64,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readInt32();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderNumberFunc.java

@@ -78,4 +78,9 @@ public void readFieldValue(JSONReader jsonReader, T object) {
  public Object readFieldValue(JSONReader jsonReader) {
  return jsonReader.readNumber();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderObject.java

@@ -321,4 +321,9 @@ public void processExtra(JSONReader jsonReader, Object object) {
 
  jsonReader.skipValue();
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }

core/src/main/java/com/alibaba/fastjson2/reader/FieldReaderStringFunc.java

@@ -91,4 +91,9 @@ public Object readFieldValue(JSONReader jsonReader) {
  public boolean supportAcceptType(Class valueClass) {
  return true;
  }
+
+ @Override
+ public BiConsumer getFunction() {
+ return function;
+ }
 }