yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/presence/PresenceStatementSupport.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.presence;
   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.PresenceEffectiveStatement;
  15 import org.opendaylight.yangtools.yang.model.api.stmt.PresenceStatement;
  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 PresenceStatementSupport
  22         extends BaseStringStatementSupport<PresenceStatement, PresenceEffectiveStatement> {
  23     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
  24             SubstatementValidator.builder(YangStmtMapping.PRESENCE).build();
  25     private static final PresenceStatementSupport INSTANCE = new PresenceStatementSupport();
  26
  27     private PresenceStatementSupport() {
  28         super(YangStmtMapping.PRESENCE);
  29     }
  30
  31     public static PresenceStatementSupport getInstance() {
  32         return INSTANCE;
  33     }
  34
  35     @Override
  36     protected SubstatementValidator getSubstatementValidator() {
  37         return SUBSTATEMENT_VALIDATOR;
  38     }
  39
  40     @Override
  41     protected PresenceStatement createDeclared(final StmtContext<String, PresenceStatement, ?> ctx,
  42             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  43         return new RegularPresenceStatement(ctx.coerceRawStatementArgument(), substatements);
  44     }
  45
  46     @Override
  47     protected PresenceStatement createEmptyDeclared(final StmtContext<String, PresenceStatement, ?> ctx) {
  48         return new EmptyPresenceStatement(ctx.coerceRawStatementArgument());
  49     }
  50
  51     @Override
  52     protected PresenceEffectiveStatement createEffective(final Current<String, PresenceStatement> stmt,
  53             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  54         return substatements.isEmpty() ? new EmptyPresenceEffectiveStatement(stmt.declared())
  55             : new RegularPresenceEffectiveStatement(stmt.declared(), substatements);
  56     }
  57 }