/**
 * Copyright 2011-2019 Asakusa Framework Team.
 *
 * 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 com.asakusafw.dmdl.parser;

import com.asakusafw.dmdl.Diagnostic;
import com.asakusafw.dmdl.Region;

/**
 * DMDL Syntax Error.
 * @since 0.2.0
 * @version 0.5.3
 */
public class DmdlSyntaxException extends Exception {

    private static final long serialVersionUID = 1L;

    private final Diagnostic diagnostic;

    /**
     * Creates a new instance.
     * @param diagnostic the source diagnostic
     * @param cause the original cause
     */
    public DmdlSyntaxException(Diagnostic diagnostic, Throwable cause) {
        super(diagnostic.message, cause);
        this.diagnostic = diagnostic;
    }

    /**
     * Returns the region on this error.
     * @return the region, or {@code null} if not known
     */
    public Region getRegion() {
        return diagnostic.region;
    }
}
