Implement LongArrayTag

lib/nbt/Tag.dart

@@ -11,6 +11,7 @@ import 'package:libac_flutter/nbt/impl/TagShort.dart';
 import 'Stream.dart';
 import 'impl/ByteTag.dart';
 import 'impl/ListTag.dart';
+import 'impl/LongArrayTag.dart';
 
 enum TagType {
   End(0),
@@ -123,6 +124,10 @@ abstract class Tag {
         {
           return new IntArrayTag();
         }
+      case TagType.LongArray:
+        {
+          return new LongArrayTag();
+        }
 
       case TagType.List:
         {

lib/nbt/impl/LongArrayTag.dart

@@ -0,0 +1,40 @@
+import 'package:libac_flutter/nbt/Stream.dart';
+import 'package:libac_flutter/nbt/Tag.dart';
+
+class LongArrayTag extends Tag {
+  List<int> _value = [];
+  LongArrayTag();
+
+  LongArrayTag._(List<int> lst) {
+    _value.addAll(lst);
+  }
+
+  static LongArrayTag valueOf(List<int> value) {
+    return LongArrayTag._(value);
+  }
+
+  @override
+  void readValue(ByteLayer data) {
+    int count = data.readInt();
+    for (int i = 0; i < count; i++) {
+      _value.add(data.readLong());
+    }
+  }
+
+  @override
+  void writeValue(ByteLayer data) {
+    data.writeInt(size());
+    for (int i in _value) {
+      data.writeLong(i);
+    }
+  }
+
+  int size() {
+    return _value.length;
+  }
+
+  @override
+  TagType getTagType() {
+    return TagType.LongArray;
+  }
+}

lib/nbt/impl/TagLongArray.dart

@@ -1,22 +0,0 @@
-import 'package:libac_flutter/nbt/Stream.dart';
-import 'package:libac_flutter/nbt/Tag.dart';
-
-class TagLongArray extends Tag {
-  final List<int> value;
-  TagLongArray({required this.value});
-
-  @override
-  void readValue(ByteLayer data) {
-    // TODO: implement readValue
-  }
-
-  @override
-  void writeValue(ByteLayer data) {
-    // TODO: implement writeValue
-  }
-
-  @override
-  TagType getTagType() {
-    return TagType.LongArray;
-  }
-}