/*
 * Copyright (c) 2016 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */
package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.pattern;

import com.google.common.annotations.Beta;
import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;

/**
 * Class providing necessary support for processing YANG 1.1 Pattern statement.
 */
@Beta
public final class PatternStatementRFC7950Support extends AbstractPatternStatementSupport {
    private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
            .PATTERN)
            .addOptional(YangStmtMapping.DESCRIPTION)
            .addOptional(YangStmtMapping.ERROR_APP_TAG)
            .addOptional(YangStmtMapping.ERROR_MESSAGE)
            .addOptional(YangStmtMapping.MODIFIER)
            .addOptional(YangStmtMapping.REFERENCE)
            .build();
    private static final PatternStatementRFC7950Support INSTANCE = new PatternStatementRFC7950Support();

    private PatternStatementRFC7950Support() {
        // Hidden
    }

    public static PatternStatementRFC7950Support getInstance() {
        return INSTANCE;
    }

    @Override
    protected SubstatementValidator getSubstatementValidator() {
        return SUBSTATEMENT_VALIDATOR;
    }
}