/*****************************************************************************
 * 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.List;

final class RepeatTimesParser<T> extends Parser<List<T>> {
	private final Parser<? extends T> parser;
	private final int min;
	private final int max;
	private final ListFactory<T> listFactory;

	RepeatTimesParser(Parser<? extends T> parser, int min, int max) {
		this(parser, min, max, ListFactories.<T> arrayListFactory());
	}

	RepeatTimesParser(Parser<? extends T> parser, int min, int max, ListFactory<T> listFactory) {
		this.parser = parser;
		this.min = min;
		this.max = max;
		this.listFactory = listFactory;
	}

	@Override
	boolean apply(ParseContext ctxt) {
		List<T> result = listFactory.newList();
		if (!ParserInternals.repeat(parser, min, result, ctxt))
			return false;
		if (ParserInternals.repeatAtMost(parser, max - min, result, ctxt)) {
			ctxt.result = result;
			return true;
		}
		return false;
	}

	@Override
	public String toString() {
		return "times";
	}
}