yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/if_feature/AbstractIfFeatureStatementSupport.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.if_feature;
   9
  10 import static com.google.common.base.Verify.verifyNotNull;
  11
  12 import com.google.common.collect.ImmutableList;
  13 import java.util.Collection;
  14 import java.util.HashMap;
  15 import java.util.HashSet;
  16 import java.util.Map;
  17 import java.util.Set;
  18 import org.opendaylight.yangtools.yang.common.QName;
  19 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  20 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  21 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  22 import org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureEffectiveStatement;
  23 import org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureExpr;
  24 import org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureStatement;
  25 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  26 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
  27 import org.opendaylight.yangtools.yang.parser.spi.FeatureNamespace;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  30 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  32 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  33 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
  34 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  35 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  36 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  37 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  38 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  39 import org.slf4j.Logger;
  40 import org.slf4j.LoggerFactory;
  41
  42 abstract class AbstractIfFeatureStatementSupport
  43         extends AbstractStatementSupport<IfFeatureExpr, IfFeatureStatement, IfFeatureEffectiveStatement> {
  44     private static final Logger LOG = LoggerFactory.getLogger(AbstractIfFeatureStatementSupport.class);
  45     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  46         YangStmtMapping.IF_FEATURE)
  47         .build();
  48
  49     AbstractIfFeatureStatementSupport() {
  50         super(YangStmtMapping.IF_FEATURE, StatementPolicy.contextIndependent());
  51     }
  52
  53     @Override
  54     public final void onFullDefinitionDeclared(
  55             final Mutable<IfFeatureExpr, IfFeatureStatement, IfFeatureEffectiveStatement> stmt) {
  56         super.onFullDefinitionDeclared(stmt);
  57
  58         final ModelActionBuilder verifyFeatures = stmt.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
  59         final Map<Prerequisite<?>, QName> backRef = new HashMap<>();
  60         for (QName feature : stmt.getArgument().getReferencedFeatures()) {
  61             backRef.put(verifyFeatures.requiresCtx(stmt, FeatureNamespace.class, feature,
  62                 ModelProcessingPhase.EFFECTIVE_MODEL), feature);
  63         }
  64
  65         verifyFeatures.apply(new InferenceAction() {
  66             @Override
  67             public void apply(final InferenceContext ctx) {
  68                 LOG.debug("Resolved all feature references in {}", backRef.values());
  69             }
  70
  71             @Override
  72             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
  73                 final Set<QName> unresolvedFeatures = new HashSet<>();
  74                 for (Prerequisite<?> prereq : failed) {
  75                     unresolvedFeatures.add(verifyNotNull(backRef.get(prereq)));
  76                 }
  77
  78                 throw new InferenceException(stmt, "Failed to resolve feature references %s in \"%s\"",
  79                     unresolvedFeatures, stmt.rawArgument());
  80             }
  81         });
  82     }
  83
  84     @Override
  85     protected final SubstatementValidator getSubstatementValidator() {
  86         return SUBSTATEMENT_VALIDATOR;
  87     }
  88
  89     @Override
  90     protected final IfFeatureStatement createDeclared(final StmtContext<IfFeatureExpr, IfFeatureStatement, ?> ctx,
  91             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  92         return DeclaredStatements.createIfFeature(ctx.getRawArgument(), ctx.getArgument(), substatements);
  93     }
  94
  95     @Override
  96     protected final IfFeatureStatement createEmptyDeclared(
  97             final StmtContext<IfFeatureExpr, IfFeatureStatement, ?> ctx) {
  98         return DeclaredStatements.createIfFeature(ctx.getRawArgument(), ctx.getArgument());
  99     }
 100
 101     @Override
 102     protected final IfFeatureEffectiveStatement createEffective(final Current<IfFeatureExpr, IfFeatureStatement> stmt,
 103             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 104         return EffectiveStatements.createIfFeature(stmt.declared(), substatements);
 105     }
 106 }