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