yang/yang-parser-impl/src/main/java/org/opendaylight/yangtools/yang/parser/stmt/rfc6020/BaseStatementImpl.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.ArrayList;
  11 import java.util.Collection;
  12 import java.util.List;
  13 import org.opendaylight.yangtools.yang.common.QName;
  14 import org.opendaylight.yangtools.yang.model.api.Rfc6020Mapping;
  15 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.BaseStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.IdentityStatement;
  18 import org.opendaylight.yangtools.yang.parser.spi.IdentityNamespace;
  19 import org.opendaylight.yangtools.yang.parser.spi.SubstatementValidator;
  20 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractDeclaredStatement;
  21 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  22 import org.opendaylight.yangtools.yang.parser.spi.meta.DerivedIdentitiesNamespace;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  26 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  31 import org.opendaylight.yangtools.yang.parser.stmt.rfc6020.effective.BaseEffectiveStatementImpl;
  32
  33 public class BaseStatementImpl extends AbstractDeclaredStatement<QName> implements BaseStatement {
  34     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
  35             SubstatementValidator.builder(Rfc6020Mapping.BASE).build();
  36
  37     protected BaseStatementImpl(final StmtContext<QName, BaseStatement, ?> context) {
  38         super(context);
  39     }
  40
  41     public static class Definition
  42             extends AbstractStatementSupport<QName, BaseStatement, EffectiveStatement<QName, BaseStatement>> {
  43
  44         public Definition() {
  45             super(Rfc6020Mapping.BASE);
  46         }
  47
  48         @Override
  49         public QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  50             return Utils.qNameFromArgument(ctx, value);
  51         }
  52
  53         @Override
  54         public BaseStatement createDeclared(final StmtContext<QName, BaseStatement, ?> ctx) {
  55             return new BaseStatementImpl(ctx);
  56         }
  57
  58         @Override
  59         public EffectiveStatement<QName, BaseStatement> createEffective(
  60                 final StmtContext<QName, BaseStatement, EffectiveStatement<QName, BaseStatement>> ctx) {
  61             return new BaseEffectiveStatementImpl(ctx);
  62         }
  63
  64         @Override
  65         public void onStatementDefinitionDeclared(
  66                 final Mutable<QName, BaseStatement, EffectiveStatement<QName, BaseStatement>> baseStmtCtx) {
  67             final Mutable<?, ?, ?> baseParentCtx = baseStmtCtx.getParentContext();
  68             if (StmtContextUtils.producesDeclared(baseParentCtx, IdentityStatement.class)) {
  69
  70                 final QName baseIdentityQName = baseStmtCtx.getStatementArgument();
  71                 final ModelActionBuilder baseIdentityAction = baseStmtCtx.newInferenceAction(
  72                     ModelProcessingPhase.STATEMENT_DEFINITION);
  73                 final Prerequisite<StmtContext<?, ?, ?>> requiresPrereq = baseIdentityAction.requiresCtx(baseStmtCtx,
  74                     IdentityNamespace.class, baseIdentityQName, ModelProcessingPhase.STATEMENT_DEFINITION);
  75                 final Prerequisite<StmtContext.Mutable<?, ?, ?>> mutatesPrereq = baseIdentityAction.mutatesCtx(
  76                     baseParentCtx, ModelProcessingPhase.STATEMENT_DEFINITION);
  77
  78                 baseIdentityAction.apply(new InferenceAction() {
  79                     @Override
  80                     public void apply() {
  81                         List<StmtContext<?, ?, ?>> derivedIdentities =
  82                                 baseStmtCtx.getFromNamespace(DerivedIdentitiesNamespace.class, baseStmtCtx.getStatementArgument());
  83                         if (derivedIdentities == null) {
  84                             derivedIdentities = new ArrayList<>();
  85                             baseStmtCtx.addToNs(DerivedIdentitiesNamespace.class, baseIdentityQName, derivedIdentities);
  86                         }
  87                         derivedIdentities.add(baseParentCtx);
  88                     }
  89
  90                     @Override
  91                     public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
  92                         throw new InferenceException(baseStmtCtx.getStatementSourceReference(),
  93                             "Unable to resolve identity %s and base identity %s",
  94                             baseParentCtx.getStatementArgument(), baseStmtCtx.getStatementArgument());
  95                     }
  96                 });
  97             }
  98         }
  99
 100         @Override
 101         public void onFullDefinitionDeclared(
 102                 final Mutable<QName, BaseStatement, EffectiveStatement<QName, BaseStatement>> stmt) {
 103             super.onFullDefinitionDeclared(stmt);
 104             SUBSTATEMENT_VALIDATOR.validate(stmt);
 105         }
 106     }
 107
 108     @Override
 109     public QName getName() {
 110         return argument();
 111     }
 112 }