/*****************************************************************************
 * Copyright (C) Codehaus.org                                                *
 * ------------------------------------------------------------------------- *
 * 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.ion.rosetta;

import java.util.Collections;
import java.util.List;

import net.ion.rosetta.error.ParseErrorDetails;

/**
 * Empty implementation of {@link ParseErrorDetails} for subclasses to override.
 * 
 * @author benyu
 */
class EmptyParseError implements ParseErrorDetails {

	private final int index;
	private final String encountered;

	EmptyParseError(int index, String encountered) {
		this.index = index;
		this.encountered = encountered;
	}

	public final String getEncountered() {
		return encountered;
	}

	public List<String> getExpected() {
		return Collections.emptyList();
	}

	public String getFailureMessage() {
		return null;
	}

	public final int getIndex() {
		return index;
	}

	public String getUnexpected() {
		return null;
	}
}