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 java.util.Collection;
  11 import org.opendaylight.yangtools.yang.common.QName;
  12 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
  13 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  14 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentStatement;
  15 import org.opendaylight.yangtools.yang.model.api.stmt.DescriptionStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.RefineStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.StatusStatement;
  20 import org.opendaylight.yangtools.yang.model.api.stmt.UsesStatement;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.WhenStatement;
  22 import org.opendaylight.yangtools.yang.parser.spi.GroupingNamespace;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractDeclaredStatement;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  26 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  32 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  33 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase;
  34 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.UsesEffectiveStatementImpl;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38
  39 public class UsesStatementImpl extends AbstractDeclaredStatement<QName> implements UsesStatement {
  40
  41     private static final Logger LOG = LoggerFactory.getLogger(UsesStatementImpl.class);
  42
  43     protected UsesStatementImpl(final StmtContext<QName, UsesStatement, ?> context) {
  44         super(context);
  45     }
  46
  47     public static class Definition extends
  48             AbstractStatementSupport<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> {
  49
  50         public Definition() {
  51             super(Rfc6020Mapping.USES);
  52         }
  53
  54         @Override
  55         public QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  56             return Utils.qNameFromArgument(ctx, value);
  57         }
  58
  59         @Override
  60         public void onFullDefinitionDeclared(
  61                 final StmtContext.Mutable<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> usesNode)
  62                 throws SourceException {
  63
  64             if(StmtContextUtils.isInExtensionBody(usesNode)) {
  65                 return;
  66             }
  67
  68             ModelActionBuilder usesAction = usesNode.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
  69             final QName groupingName = usesNode.getStatementArgument();
  70
  71             final Prerequisite<StmtContext<?, ?, ?>> sourceGroupingPre = usesAction.requiresCtx(usesNode,
  72                     GroupingNamespace.class, groupingName, ModelProcessingPhase.EFFECTIVE_MODEL);
  73             final Prerequisite<? extends StmtContext.Mutable<?, ?, ?>> targetNodePre = usesAction.mutatesEffectiveCtx(
  74                     usesNode.getParentContext());
  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, usesNode);
  85                         GroupingUtils.resolveUsesNode(usesNode, targetNodeStmtCtx);
  86                     } catch (SourceException e) {
  87                         LOG.warn(e.getMessage(), e);
  88                         throw e;
  89                     }
  90                 }
  91
  92                 @Override
  93                 public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) throws InferenceException {
  94                     if (failed.contains(sourceGroupingPre)) {
  95                         throw new InferenceException("Grouping " + groupingName + " was not resolved.", usesNode
  96                                 .getStatementSourceReference());
  97                     }
  98                     throw new InferenceException("Unknown error occurred.", usesNode.getStatementSourceReference());
  99                 }
 100             });
 101         }
 102
 103         @Override
 104         public UsesStatement createDeclared(final StmtContext<QName, UsesStatement, ?> ctx) {
 105             return new UsesStatementImpl(ctx);
 106         }
 107
 108         @Override
 109         public EffectiveStatement<QName, UsesStatement> createEffective(
 110                 final StmtContext<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> ctx) {
 111             return new UsesEffectiveStatementImpl(ctx);
 112         }
 113
 114     }
 115
 116     @Override
 117     public QName getName() {
 118         return argument();
 119     }
 120
 121     @Override
 122     public WhenStatement getWhenStatement() {
 123         return firstDeclared(WhenStatement.class);
 124     }
 125
 126     @Override
 127     public Collection<? extends IfFeatureStatement> getIfFeatures() {
 128         return allDeclared(IfFeatureStatement.class);
 129     }
 130
 131     @Override
 132     public StatusStatement getStatus() {
 133         return firstDeclared(StatusStatement.class);
 134     }
 135
 136     @Override
 137     public DescriptionStatement getDescription() {
 138         return firstDeclared(DescriptionStatement.class);
 139     }
 140
 141     @Override
 142     public ReferenceStatement getReference() {
 143         return firstDeclared(ReferenceStatement.class);
 144     }
 145
 146     @Override
 147     public Collection<? extends AugmentStatement> getAugments() {
 148         return allDeclared(AugmentStatement.class);
 149     }
 150
 151     @Override
 152     public Collection<? extends RefineStatement> getRefines() {
 153         return allDeclared(RefineStatement.class);
 154     }
 155 }