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 org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  13
  14 import java.util.Collection;
  15 import org.opendaylight.yangtools.yang.common.QName;
  16 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
  17 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.DescriptionStatement;
  20 import org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureStatement;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.ReferenceStatement;
  22 import org.opendaylight.yangtools.yang.model.api.stmt.RefineStatement;
  23 import org.opendaylight.yangtools.yang.model.api.stmt.StatusStatement;
  24 import org.opendaylight.yangtools.yang.model.api.stmt.UsesStatement;
  25 import org.opendaylight.yangtools.yang.model.api.stmt.WhenStatement;
  26 import org.opendaylight.yangtools.yang.parser.spi.GroupingNamespace;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractDeclaredStatement;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  30 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  32 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  33 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  34 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  35 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  36 import org.opendaylight.yangtools.yang.parser.stmt.reactor.StatementContextBase;
  37 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.UsesEffectiveStatementImpl;
  38 import org.slf4j.Logger;
  39 import org.slf4j.LoggerFactory;
  40
  41
  42 public class UsesStatementImpl extends AbstractDeclaredStatement<QName> implements UsesStatement {
  43
  44     private static final Logger LOG = LoggerFactory.getLogger(UsesStatementImpl.class);
  45
  46     protected UsesStatementImpl(StmtContext<QName, UsesStatement, ?> context) {
  47         super(context);
  48     }
  49
  50     public static class Definition extends
  51             AbstractStatementSupport<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> {
  52
  53         public Definition() {
  54             super(Rfc6020Mapping.USES);
  55         }
  56
  57         @Override
  58         public QName parseArgumentValue(StmtContext<?, ?, ?> ctx, String value) {
  59             return Utils.qNameFromArgument(ctx, value);
  60         }
  61
  62         @Override
  63         public void onFullDefinitionDeclared(
  64                 final StmtContext.Mutable<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> usesNode)
  65                 throws SourceException {
  66
  67             if(StmtContextUtils.isInExtensionBody(usesNode)) {
  68                 return;
  69             }
  70
  71             ModelActionBuilder usesAction = usesNode.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
  72             final QName groupingName = usesNode.getStatementArgument();
  73
  74             final Prerequisite<StmtContext<?, ?, ?>> sourceGroupingPre = usesAction.requiresCtx(usesNode,
  75                     GroupingNamespace.class, groupingName, ModelProcessingPhase.EFFECTIVE_MODEL);
  76             final Prerequisite<? extends StmtContext.Mutable<?, ?, ?>> targetNodePre = usesAction.mutatesEffectiveCtx(
  77                     usesNode.getParentContext());
  78
  79             usesAction.apply(new InferenceAction() {
  80
  81                 @Override
  82                 public void apply() throws InferenceException {
  83                     StatementContextBase<?, ?, ?> targetNodeStmtCtx = (StatementContextBase<?, ?, ?>) targetNodePre.get();
  84                     StatementContextBase<?, ?, ?> sourceGrpStmtCtx = (StatementContextBase<?, ?, ?>) sourceGroupingPre.get();
  85
  86                     try {
  87                         GroupingUtils.copyFromSourceToTarget(sourceGrpStmtCtx, targetNodeStmtCtx, usesNode);
  88                         GroupingUtils.resolveUsesNode(usesNode, targetNodeStmtCtx);
  89                     } catch (SourceException e) {
  90                         LOG.warn(e.getMessage(), e);
  91                         throw e;
  92                     }
  93                 }
  94
  95                 @Override
  96                 public void prerequisiteFailed(Collection<? extends Prerequisite<?>> failed) throws InferenceException {
  97                     if (failed.contains(sourceGroupingPre)) {
  98                         throw new InferenceException("Grouping " + groupingName + " was not resolved.", usesNode
  99                                 .getStatementSourceReference());
 100                     }
 101                     throw new InferenceException("Unknown error occurred.", usesNode.getStatementSourceReference());
 102                 }
 103             });
 104         }
 105
 106         @Override
 107         public UsesStatement createDeclared(StmtContext<QName, UsesStatement, ?> ctx) {
 108             return new UsesStatementImpl(ctx);
 109         }
 110
 111         @Override
 112         public EffectiveStatement<QName, UsesStatement> createEffective(
 113                 StmtContext<QName, UsesStatement, EffectiveStatement<QName, UsesStatement>> ctx) {
 114             return new UsesEffectiveStatementImpl(ctx);
 115         }
 116
 117     }
 118
 119     @Override
 120     public QName getName() {
 121         return argument();
 122     }
 123
 124     @Override
 125     public WhenStatement getWhenStatement() {
 126         return firstDeclared(WhenStatement.class);
 127     }
 128
 129     @Override
 130     public Collection<? extends IfFeatureStatement> getIfFeatures() {
 131         return allDeclared(IfFeatureStatement.class);
 132     }
 133
 134     @Override
 135     public StatusStatement getStatus() {
 136         return firstDeclared(StatusStatement.class);
 137     }
 138
 139     @Override
 140     public DescriptionStatement getDescription() {
 141         return firstDeclared(DescriptionStatement.class);
 142     }
 143
 144     @Override
 145     public ReferenceStatement getReference() {
 146         return firstDeclared(ReferenceStatement.class);
 147     }
 148
 149     @Override
 150     public Collection<? extends AugmentStatement> getAugments() {
 151         return allDeclared(AugmentStatement.class);
 152     }
 153
 154     @Override
 155     public Collection<? extends RefineStatement> getRefines() {
 156         return allDeclared(RefineStatement.class);
 157     }
 158 }