yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/belongs_to/BelongsToStatementSupport.java

   1 /*
   2  * Copyright (c) 2017 Pantheon Technologies, s.r.o. 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.rfc7950.stmt.belongs_to;
   9
  10 import static org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils.findFirstDeclaredSubstatement;
  11
  12 import com.google.common.collect.ImmutableList;
  13 import java.util.Collection;
  14 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  15 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  16 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.BelongsToEffectiveStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.BelongsToStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.PrefixStatement;
  20 import org.opendaylight.yangtools.yang.model.repo.api.RevisionSourceIdentifier;
  21 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
  22 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStringStatementSupport;
  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.InferenceContext;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  30 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  32 import org.opendaylight.yangtools.yang.parser.spi.source.BelongsToModuleContext;
  33 import org.opendaylight.yangtools.yang.parser.spi.source.BelongsToPrefixToModuleCtx;
  34 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleNamespaceForBelongsTo;
  35
  36 public final class BelongsToStatementSupport
  37         extends BaseStringStatementSupport<BelongsToStatement, BelongsToEffectiveStatement> {
  38     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
  39             SubstatementValidator.builder(YangStmtMapping.BELONGS_TO).addMandatory(YangStmtMapping.PREFIX).build();
  40     private static final BelongsToStatementSupport INSTANCE = new BelongsToStatementSupport();
  41
  42     private BelongsToStatementSupport() {
  43         super(YangStmtMapping.BELONGS_TO);
  44     }
  45
  46     public static BelongsToStatementSupport getInstance() {
  47         return INSTANCE;
  48     }
  49
  50     @Override
  51     public void onPreLinkageDeclared(final Mutable<String, BelongsToStatement, BelongsToEffectiveStatement> ctx) {
  52         ctx.addRequiredSource(getSourceIdentifier(ctx));
  53     }
  54
  55     @Override
  56     public void onLinkageDeclared(final Mutable<String, BelongsToStatement, BelongsToEffectiveStatement> belongsToCtx) {
  57         ModelActionBuilder belongsToAction = belongsToCtx.newInferenceAction(ModelProcessingPhase.SOURCE_LINKAGE);
  58
  59         final SourceIdentifier belongsToSourceIdentifier = getSourceIdentifier(belongsToCtx);
  60         final Prerequisite<StmtContext<?, ?, ?>> belongsToPrereq = belongsToAction.requiresCtx(belongsToCtx,
  61             ModuleNamespaceForBelongsTo.class, belongsToCtx.coerceStatementArgument(),
  62             ModelProcessingPhase.SOURCE_LINKAGE);
  63
  64         belongsToAction.apply(new InferenceAction() {
  65             @Override
  66             public void apply(final InferenceContext ctx) {
  67                 StmtContext<?, ?, ?> belongsToModuleCtx = belongsToPrereq.resolve(ctx);
  68
  69                 belongsToCtx.addToNs(BelongsToModuleContext.class, belongsToSourceIdentifier, belongsToModuleCtx);
  70                 belongsToCtx.addToNs(BelongsToPrefixToModuleCtx.class,
  71                     findFirstDeclaredSubstatement(belongsToCtx, PrefixStatement.class).coerceStatementArgument(),
  72                     belongsToModuleCtx);
  73             }
  74
  75             @Override
  76             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
  77                 if (failed.contains(belongsToPrereq)) {
  78                     throw new InferenceException(belongsToCtx.getStatementSourceReference(),
  79                         "Module '%s' from belongs-to was not found", belongsToCtx.getStatementArgument());
  80                 }
  81             }
  82         });
  83     }
  84
  85     @Override
  86     protected BelongsToStatement createDeclared(final StmtContext<String, BelongsToStatement, ?> ctx,
  87             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  88         return new RegularBelongsToStatement(ctx.coerceRawStatementArgument(), substatements);
  89     }
  90
  91     @Override
  92     protected BelongsToStatement createEmptyDeclared(final StmtContext<String, BelongsToStatement, ?> ctx) {
  93         return new EmptyBelongsToStatement(ctx.coerceRawStatementArgument());
  94     }
  95
  96     @Override
  97     protected BelongsToEffectiveStatement createEffective(
  98             final StmtContext<String, BelongsToStatement, BelongsToEffectiveStatement> ctx,
  99             final BelongsToStatement declared, final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 100         return new RegularBelongsToEffectiveStatement(declared, substatements);
 101     }
 102
 103     @Override
 104     protected BelongsToEffectiveStatement createEmptyEffective(
 105             final StmtContext<String, BelongsToStatement, BelongsToEffectiveStatement> ctx,
 106             final BelongsToStatement declared) {
 107         return new EmptyBelongsToEffectiveStatement(declared);
 108     }
 109
 110     private static SourceIdentifier getSourceIdentifier(final StmtContext<String, BelongsToStatement,
 111             BelongsToEffectiveStatement> belongsToCtx) {
 112         return RevisionSourceIdentifier.create(belongsToCtx.coerceStatementArgument());
 113     }
 114
 115     @Override
 116     protected SubstatementValidator getSubstatementValidator() {
 117         return SUBSTATEMENT_VALIDATOR;
 118     }
 119 }