yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/reference/ReferenceStatementSupport.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.reference;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  12 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  13 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  14 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceEffectiveStatement;
  15 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceStatement;
  16 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStringStatementSupport;
  17 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  18 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  19 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  20
  21 public final class ReferenceStatementSupport
  22         extends BaseStringStatementSupport<ReferenceStatement, ReferenceEffectiveStatement> {
  23     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  24         YangStmtMapping.REFERENCE)
  25         .build();
  26     private static final ReferenceStatementSupport INSTANCE = new ReferenceStatementSupport();
  27
  28     private ReferenceStatementSupport() {
  29         super(YangStmtMapping.REFERENCE);
  30     }
  31
  32     public static ReferenceStatementSupport getInstance() {
  33         return INSTANCE;
  34     }
  35
  36     @Override
  37     protected SubstatementValidator getSubstatementValidator() {
  38         return SUBSTATEMENT_VALIDATOR;
  39     }
  40
  41     @Override
  42     protected ReferenceStatement createDeclared(final StmtContext<String, ReferenceStatement, ?> ctx,
  43             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  44         return new RegularReferenceStatement(ctx.coerceRawStatementArgument(), substatements);
  45     }
  46
  47     @Override
  48     protected ReferenceStatement createEmptyDeclared(final StmtContext<String, ReferenceStatement, ?> ctx) {
  49         return new EmptyReferenceStatement(ctx.coerceRawStatementArgument());
  50     }
  51
  52     @Override
  53     protected ReferenceEffectiveStatement createEffective(final Current<String, ReferenceStatement> stmt,
  54             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  55         return substatements.isEmpty() ? new EmptyReferenceEffectiveStatement(stmt.declared())
  56             : new RegularReferenceEffectiveStatement(stmt.declared(), substatements);
  57     }
  58 }