yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/augment/AugmentStatementRFC7950Support.java

   1 /*
   2  * Copyright (c) 2016 Cisco Systems, Inc. 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 com.google.common.annotations.Beta;
  11 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  12 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  13 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  14
  15 /**
  16  * Class providing necessary support for processing YANG 1.1 Augment statement.
  17  */
  18 @Beta
  19 public final class AugmentStatementRFC7950Support extends AbstractAugmentStatementSupport {
  20     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator
  21             .builder(YangStmtMapping.AUGMENT)
  22             .addAny(YangStmtMapping.ACTION)
  23             .addAny(YangStmtMapping.ANYDATA)
  24             .addAny(YangStmtMapping.ANYXML)
  25             .addAny(YangStmtMapping.CASE)
  26             .addAny(YangStmtMapping.CHOICE)
  27             .addAny(YangStmtMapping.CONTAINER)
  28             .addOptional(YangStmtMapping.DESCRIPTION)
  29             .addAny(YangStmtMapping.IF_FEATURE)
  30             .addAny(YangStmtMapping.LEAF)
  31             .addAny(YangStmtMapping.LEAF_LIST)
  32             .addAny(YangStmtMapping.LIST)
  33             .addAny(YangStmtMapping.NOTIFICATION)
  34             .addOptional(YangStmtMapping.REFERENCE)
  35             .addOptional(YangStmtMapping.STATUS)
  36             .addAny(YangStmtMapping.USES)
  37             .addOptional(YangStmtMapping.WHEN)
  38             .build();
  39     private static final AugmentStatementRFC7950Support INSTANCE = new AugmentStatementRFC7950Support();
  40
  41     private AugmentStatementRFC7950Support() {
  42         // Hidden
  43     }
  44
  45     public static AugmentStatementRFC7950Support getInstance() {
  46         return INSTANCE;
  47     }
  48
  49     @Override
  50     protected SubstatementValidator getSubstatementValidator() {
  51         return SUBSTATEMENT_VALIDATOR;
  52     }
  53
  54     @Override
  55     boolean allowsMandatory(final StmtContext<?, ?, ?> ctx) {
  56         return ctx.publicDefinition() == YangStmtMapping.AUGMENT && hasWhenSubstatement(ctx);
  57     }
  58 }