[LIB-9] Set of entities for PGN parsing and formatting

[chesshog.git] / chesshog-format / src / main / java / org / hedgecode / chess / pgn / entity / Variation.java

diff --git a/chesshog-format/src/main/java/org/hedgecode/chess/pgn/entity/Variation.java b/chesshog-format/src/main/java/org/hedgecode/chess/pgn/entity/Variation.java
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+/*
+ * Copyright (c) 2018-2020. Developed by Hedgecode.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.hedgecode.chess.pgn.entity;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * Variation
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public class Variation implements Moves {
+
+    private final DetailMove NULL_MOVE = new DetailMove(0, null);
+
+    private DetailMove currentMove;
+    private final List<DetailMove> moves = new ArrayList<>();
+
+    public Variation() {
+        currentMove = NULL_MOVE;
+    }
+
+    @Override
+    public void addMove(DetailMove move) {
+        moves.add(move);
+        currentMove = move;
+    }
+
+    @Override
+    public List<DetailMove> getMoves() {
+        return moves;
+    }
+
+    @Override
+    public DetailMove nullMove() {
+        return NULL_MOVE;
+    }
+
+    @Override
+    public DetailMove currentMove() {
+        return currentMove;
+    }
+
+}