Implement ListTag

lib/nbt/Tag.dart

@@ -10,6 +10,7 @@ import 'package:libac_flutter/nbt/impl/TagShort.dart';
 
 import 'Stream.dart';
 import 'impl/ByteTag.dart';
+import 'impl/ListTag.dart';
 
 enum TagType {
   End(0),
@@ -108,6 +109,26 @@ abstract class Tag {
         {
           return new IntArrayTag();
         }
+
+      case TagType.List:
+        {
+          return new ListTag();
+        }
+      }
     }
   }
+
+  bool equals(dynamic object) {
+    if (object == null || !(object is Tag)) return false;
+
+    Tag tag = object;
+    if (tag.getType() != getType()) return false;
+
+    if (getKey() == null && tag.getKey() != null ||
+        tag.getKey() == null && getKey() != null) return false;
+
+    if (getKey() != null && !(getKey() == tag.getKey())) return false;
+
+    return true;
+  }
 }

lib/nbt/impl/ListTag.dart

@@ -0,0 +1,67 @@
+import 'package:libac_flutter/nbt/Stream.dart';
+import 'package:libac_flutter/nbt/Tag.dart';
+
+class ListTag extends Tag {
+  List<Tag> _value = [];
+
+  ListTag() {
+    _value = List.empty(growable: true);
+  }
+
+  @override
+  void readValue(ByteLayer data) {
+    TagType type = TagType.get(data.readByte());
+    int size = data.readInt();
+
+    for (int i = 0; i < size; i++) {
+      Tag tag = Tag.makeTagOfType(type);
+      tag.readValue(data);
+      add(tag);
+    }
+  }
+
+  @override
+  void writeValue(ByteLayer data) {
+    TagType type = TagType.End;
+    if (size() > 0) {
+      type = _value[0].getTagType();
+    }
+
+    data.writeByte(type.byte);
+    data.writeInt(size());
+    for (int i = 0; i < size(); i++) {
+      _value[i].writeValue(data);
+    }
+  }
+
+  void add(Tag tag) {
+    TagType type = TagType.End;
+    if (size() > 0) {
+      type = _value[0].getTagType();
+    }
+    if (type == TagType.End || type == tag.getTagType()) {
+      _value.add(tag);
+    }
+  }
+
+  void remove(Tag tag) {
+    _value.remove(tag);
+  }
+
+  void removeAt(int index) {
+    _value.removeAt(index);
+  }
+
+  int indexOf(Tag tag) {
+    return _value.indexOf(tag);
+  }
+
+  @override
+  TagType getTagType() {
+    return TagType.List;
+  }
+
+  int size() {
+    return _value.length;
+  }
+}

lib/nbt/impl/TagList.dart

@@ -1,50 +0,0 @@
-import 'package:libac_flutter/nbt/Stream.dart';
-import 'package:libac_flutter/nbt/Tag.dart';
-
-class TagList extends Tag {
-  late final List<Tag> _value;
-  TagType _internalType = TagType.End;
-
-  TagList() {
-    _value = List.empty(growable: true);
-  }
-
-  @override
-  void readValue(ByteLayer data) {
-    // TODO: implement readValue
-  }
-
-  @override
-  void writeValue(ByteLayer data) {
-    // TODO: implement writeValue
-  }
-
-  void add(Tag tag) {
-    if (_internalType == TagType.End) {
-      _value.clear();
-      _value.add(tag);
-      _internalType = tag.getTagType();
-    } else {
-      if (_internalType == tag.getTagType()) {
-        _value.add(tag);
-      }
-    }
-  }
-
-  void remove(Tag tag) {
-    _value.remove(tag);
-  }
-
-  void removeAt(int index) {
-    _value.removeAt(index);
-  }
-
-  int indexOf(Tag tag) {
-    return _value.indexOf(tag);
-  }
-
-  @override
-  TagType getTagType() {
-    return TagType.List;
-  }
-}