--- /dev/null
+/*
+ * 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.token;
+
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+import org.hedgecode.chess.pgn.entity.DetailMove;
+import org.hedgecode.chess.pgn.entity.Moves;
+import org.hedgecode.chess.position.ParseException;
+
+/**
+ * MoveToken
+ *
+ * @author Dmitry Samoshin aka gotty
+ */
+public class MoveToken implements Token<Moves> {
+
+ private static final String MOVE_REGEX = "^\\s*(([0-9]+)\\s*(\\.|\\.{3})\\s*)*([PNBRQK]?[a-hx1-8\\-O]+(=[NBRQ])?([+#])?)";
+ private static final Pattern MOVE_PATTERN = Pattern.compile(MOVE_REGEX);
+ private static final int PLY_GROUP = 2, DOT_GROUP = 3, MOVE_GROUP = 4;
+ private static final String DOT_BLACK = "...";
+
+ @Override
+ public int token(Moves moves, String pgn) throws ParseException {
+ Matcher matcher = MOVE_PATTERN.matcher(pgn);
+ if (!matcher.find()) {
+ throw new ParseException("parse.pgn.incorrect.move", pgn);
+ } else {
+ boolean isBlackMove = isBlackMove(matcher.group(DOT_GROUP));
+ String plyStr = matcher.group(PLY_GROUP);
+ int ply = plyStr != null
+ ? Integer.parseInt(plyStr) * 2 - (isBlackMove ? 0 : 1)
+ : moves.currentMove().ply() + 1;
+ String move = matcher.group(MOVE_GROUP);
+ moves.addMove(
+ new DetailMove(ply, move)
+ );
+ }
+ return matcher.group().length();
+ }
+
+ private boolean isBlackMove(String dotGroup) {
+ return dotGroup == null || dotGroup.equals(DOT_BLACK);
+ }
+
+}