fix bug: support java enum variable list (#330)

Co-authored-by: shenchao <shenchao@zongheng.com>

list.go

@@ -380,8 +380,6 @@ func (d *Decoder) readTypedListValue(length int, listTyp string, isVariableArr b
 		} else {
 			if it != nil {
 				aryValue.Index(j).Set(EnsureRawValue(it))
-			} else {
-				SetValue(aryValue.Index(j), EnsureRawValue(it))
 			}
 		}
 	}

object.go

@@ -660,7 +660,7 @@ func (d *Decoder) getStructDefByIndex(idx int) (reflect.Type, *ClassInfo, error)
 	return s.typ, cls, nil
 }
 
-func (d *Decoder) decEnum(javaName string, flag int32) (JavaEnum, error) {
+func (d *Decoder) decEnum(javaName string, flag int32) (interface{}, error) {
 	var (
 		err       error
 		enumName  string
@@ -678,8 +678,9 @@ func (d *Decoder) decEnum(javaName string, flag int32) (JavaEnum, error) {
 	}
 
 	enumValue = info.inst.(POJOEnum).EnumValue(enumName)
-	d.appendRefs(enumValue)
-	return enumValue, nil
+	enumVal := PackPtr(reflect.ValueOf(enumValue).Convert(info.typ)).Interface()
+	d.appendRefs(enumVal)
+	return enumVal, nil
 }
 
 // skip this object

object_test.go

@@ -21,6 +21,7 @@ import (
 	"encoding/json"
 	"math"
 	"reflect"
+	"strconv"
 	"testing"
 	"time"
 
@@ -1061,3 +1062,59 @@ func TestDecodeSliceIntegerHasNull(t *testing.T) {
 	RegisterPOJO(&User{})
 	testDecodeFramework(t, "customReplyTypedListIntegerHasNull", &User{Id: 0, List: []int32{1, 0}})
 }
+
+func TestDecodeCustomReplyEnumVariableList(t *testing.T) {
+	for v := range _LocaleCategoryEnumValues {
+		RegisterJavaEnum(v)
+	}
+
+	got, err := decodeJavaResponse(`customReplyEnumVariableList`, ``, false)
+	assert.NoError(t, err)
+	t.Logf("customReplyEnumVariableList %T %+v", got, got)
+	enumList, ok := got.([]*LocaleCategoryEnum)
+	if !ok {
+		t.Errorf("expect []LocaleCategoryEnum, but get %v", got)
+		return
+	}
+	assert.Equal(t, LocaleCategoryEnumDisplay, *enumList[0])
+	assert.Nil(t, enumList[1])
+	assert.Equal(t, LocaleCategoryEnumFormat, *enumList[2])
+}
+
+const (
+	LocaleCategoryEnumDisplay LocaleCategoryEnum = iota
+	LocaleCategoryEnumFormat
+)
+
+var (
+	_LocaleCategoryEnumValues = map[LocaleCategoryEnum]string{
+		LocaleCategoryEnumDisplay: "DISPLAY",
+		LocaleCategoryEnumFormat:  "FORMAT",
+	}
+	_LocaleCategoryEnumEntities = map[string]LocaleCategoryEnum{
+		"DISPLAY": LocaleCategoryEnumDisplay,
+		"FORMAT":  LocaleCategoryEnumFormat,
+	}
+)
+
+type LocaleCategoryEnum JavaEnum
+
+func (e LocaleCategoryEnum) JavaClassName() string {
+	return "java.util.Locale$Category"
+}
+
+func (e LocaleCategoryEnum) String() string {
+	if v, ok := _LocaleCategoryEnumValues[e]; ok {
+		return v
+	}
+
+	return strconv.Itoa(int(e))
+}
+
+func (e LocaleCategoryEnum) EnumValue(s string) JavaEnum {
+	if v, ok := _LocaleCategoryEnumEntities[s]; ok {
+		return JavaEnum(v)
+	}
+
+	return InvalidJavaEnum
+}

test_hessian/src/main/java/test/TestCustomReply.java

@@ -693,6 +693,15 @@ public void customReplyEnumSet() throws Exception {
         output.writeObject(map);
         output.flush();
     }
+
+    public void customReplyEnumVariableList() throws Exception {
+        List<Locale.Category> enumList = new ArrayList<>();
+        enumList.add(Locale.Category.DISPLAY);
+        enumList.add(null);
+        enumList.add(Locale.Category.FORMAT);
+        output.writeObject(enumList.toArray(new Locale.Category[enumList.size()]));
+        output.flush();
+    }
 }
 
 interface Leg {