/*
 * Copyright 2016 higherfrequencytrading.com
 *
 * 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 net.openhft.lang.io;

/**
 * Created by peter.lawrey on 16/01/15.
 */
public class EscapingStopCharTester implements StopCharTester {
    private final StopCharTester sct;
    private boolean escaped = false;

    EscapingStopCharTester(StopCharTester sct) {
        this.sct = sct;
    }

    public static StopCharTester escaping(StopCharTester sct) {
        return new EscapingStopCharTester(sct);
    }

    @Override
    public boolean isStopChar(int ch) throws IllegalStateException {
        if (escaped) {
            escaped = false;
            return false;
        }
        if (ch == '\\') {
            escaped = true;
            return false;
        }
        return sct.isStopChar(ch);
    }
}