yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/augment/AugmentStatementRFC6020Support.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies, s.r.o. and others.  All rights reserved.
   3  *
   4  * This program and the accompanying materials are made available under the
   5  * terms of the Eclipse Public License v1.0 which accompanies this distribution,
   6  * and is available at http://www.eclipse.org/legal/epl-v10.html
   7  */
   8 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.augment;
   9
  10 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  11 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  12 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  13
  14 public final class AugmentStatementRFC6020Support extends AbstractAugmentStatementSupport {
  15     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator
  16             .builder(YangStmtMapping.AUGMENT)
  17             .addAny(YangStmtMapping.ANYXML)
  18             .addAny(YangStmtMapping.CASE)
  19             .addAny(YangStmtMapping.CHOICE)
  20             .addAny(YangStmtMapping.CONTAINER)
  21             .addOptional(YangStmtMapping.DESCRIPTION)
  22             .addAny(YangStmtMapping.IF_FEATURE)
  23             .addAny(YangStmtMapping.LEAF)
  24             .addAny(YangStmtMapping.LEAF_LIST)
  25             .addAny(YangStmtMapping.LIST)
  26             .addOptional(YangStmtMapping.REFERENCE)
  27             .addOptional(YangStmtMapping.STATUS)
  28             .addAny(YangStmtMapping.USES)
  29             .addOptional(YangStmtMapping.WHEN)
  30             .build();
  31     private static final AugmentStatementRFC6020Support INSTANCE = new AugmentStatementRFC6020Support();
  32
  33     private AugmentStatementRFC6020Support() {
  34         // Hidden
  35     }
  36
  37     public static AugmentStatementRFC6020Support getInstance() {
  38         return INSTANCE;
  39     }
  40
  41     @Override
  42     protected SubstatementValidator getSubstatementValidator() {
  43         return SUBSTATEMENT_VALIDATOR;
  44     }
  45
  46     @Override
  47     boolean allowsMandatory(final StmtContext<?, ?, ?> ctx) {
  48         return false;
  49     }
  50 }