yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/UsesStatementImpl.java

   1 /*
   2  * Copyright (c) 2015 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.stmt.rfc6020;
   9
  10 import static org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase.FULL_DECLARATION;
  11
  12 import java.util.Collection;
  13 import org.slf4j.Logger;
  14 import org.slf4j.LoggerFactory;
  15
  16 import org.opendaylight.yangtools.yang.common.QName;
  17 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
  18 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  19 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  20 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
  21 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
  22 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentStatement;
  23 import org.opendaylight.yangtools.yang.model.api.stmt.DescriptionStatement;
  24 import org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureStatement;
  25 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceStatement;
  26 import org.opendaylight.yangtools.yang.model.api.stmt.RefineStatement;
  27 import org.opendaylight.yangtools.yang.model.api.stmt.StatusStatement;
  28 import org.opendaylight.yangtools.yang.model.api.stmt.UsesStatement;
  29 import org.opendaylight.yangtools.yang.model.api.stmt.WhenStatement;
  30 import org.opendaylight.yangtools.yang.parser.spi.GroupingNamespace;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractDeclaredStatement;
  32 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  33 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  34 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  35 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  36 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  37 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  38 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  39 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase;
  40 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.UsesEffectiveStatementImpl;
  41
  42
  43 public class UsesStatementImpl extends AbstractDeclaredStatement<QName> implements UsesStatement {
  44
  45     private static final Logger LOG = LoggerFactory.getLogger(UsesStatementImpl.class);
  46
  47     protected UsesStatementImpl(StmtContext<QName, UsesStatement, ?> context) {
  48         super(context);
  49     }
  50
  51     public static class Definition extends
  52             AbstractStatementSupport<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> {
  53
  54         public Definition() {
  55             super(Rfc6020Mapping.USES);
  56         }
  57
  58         @Override
  59         public QName parseArgumentValue(StmtContext<?, ?, ?> ctx, String value) {
  60             return Utils.qNameFromArgument(ctx, value);
  61         }
  62
  63         @Override
  64         public void onFullDefinitionDeclared(
  65                 final StmtContext.Mutable<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> usesNode)
  66                 throws SourceException {
  67
  68             ModelActionBuilder usesAction = usesNode.newInferenceAction(FULL_DECLARATION);
  69             final QName groupingName = usesNode.getStatementArgument();
  70
  71             final Prerequisite<StmtContext<?, ?, ?>> sourceGroupingPre = usesAction.requiresCtx(usesNode,
  72                     GroupingNamespace.class, groupingName, FULL_DECLARATION);
  73             final Prerequisite<? extends StmtContext.Mutable<?, ?, ?>> targetNodePre = usesAction.mutatesCtx(
  74                     usesNode.getParentContext(), FULL_DECLARATION);
  75
  76             usesAction.apply(new InferenceAction() {
  77
  78                 @Override
  79                 public void apply() throws InferenceException {
  80                     StatementContextBase<?, ?, ?> targetNodeStmtCtx = (StatementContextBase<?, ?, ?>) targetNodePre.get();
  81                     StatementContextBase<?, ?, ?> sourceGrpStmtCtx = (StatementContextBase<?, ?, ?>) sourceGroupingPre.get();
  82
  83                     try {
  84                         GroupingUtils.copyFromSourceToTarget(sourceGrpStmtCtx, targetNodeStmtCtx);
  85                         GroupingUtils.resolveUsesNode(usesNode, targetNodeStmtCtx);
  86                     } catch (SourceException e) {
  87                         LOG.warn(e.getMessage(), e);
  88                     }
  89                 }
  90
  91                 @Override
  92                 public void prerequisiteFailed(Collection<? extends Prerequisite<?>> failed) throws InferenceException {
  93                     if (failed.contains(sourceGroupingPre)) {
  94                         throw new InferenceException("Grouping " + groupingName + " was not resolved.", usesNode
  95                                 .getStatementSourceReference());
  96                     }
  97                     throw new InferenceException("Unknown error occurred.", usesNode.getStatementSourceReference());
  98                 }
  99             });
 100         }
 101
 102         @Override
 103         public UsesStatement createDeclared(StmtContext<QName, UsesStatement, ?> ctx) {
 104             return new UsesStatementImpl(ctx);
 105         }
 106
 107         @Override
 108         public EffectiveStatement<QName, UsesStatement> createEffective(
 109                 StmtContext<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> ctx) {
 110             return new UsesEffectiveStatementImpl(ctx);
 111         }
 112
 113     }
 114
 115     @Override
 116     public QName getName() {
 117         return argument();
 118     }
 119
 120     @Override
 121     public WhenStatement getWhenStatement() {
 122         return firstDeclared(WhenStatement.class);
 123     }
 124
 125     @Override
 126     public Collection<? extends IfFeatureStatement> getIfFeatures() {
 127         return allDeclared(IfFeatureStatement.class);
 128     }
 129
 130     @Override
 131     public StatusStatement getStatus() {
 132         return firstDeclared(StatusStatement.class);
 133     }
 134
 135     @Override
 136     public DescriptionStatement getDescription() {
 137         return firstDeclared(DescriptionStatement.class);
 138     }
 139
 140     @Override
 141     public ReferenceStatement getReference() {
 142         return firstDeclared(ReferenceStatement.class);
 143     }
 144
 145     @Override
 146     public Collection<? extends AugmentStatement> getAugments() {
 147         return allDeclared(AugmentStatement.class);
 148     }
 149
 150     @Override
 151     public Collection<? extends RefineStatement> getRefines() {
 152         return allDeclared(RefineStatement.class);
 153     }
 154 }