/**
 * Copyright (c) 2008-2010, http://code.google.com/p/snakeyaml/
 *
 * 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.yaml.snakeyaml.tokens;

import java.util.List;

import org.yaml.snakeyaml.error.Mark;
import org.yaml.snakeyaml.error.YAMLException;

/**
 * @see <a href="http://pyyaml.org/wiki/PyYAML">PyYAML</a> for more information
 */
public final class DirectiveToken<T> extends Token {
    private final String name;
    private final List<T> value;

    public DirectiveToken(String name, List<T> value, Mark startMark, Mark endMark) {
        super(startMark, endMark);
        this.name = name;
        if (value != null && value.size() != 2) {
            throw new YAMLException("Two strings must be provided instead of "
                    + String.valueOf(value.size()));
        }
        this.value = value;
    }

    public String getName() {
        return this.name;
    }

    public List<T> getValue() {
        return this.value;
    }

    @Override
    protected String getArguments() {
        if (value != null) {
            return "name=" + name + ", value=[" + value.get(0) + ", " + value.get(1) + "]";
        } else {
            return "name=" + name;
        }
    }

    @Override
    public Token.ID getTokenId() {
        return ID.Directive;
    }
}