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.parser.rfc7950.stmt.BaseStatementSupport;
  26 import org.opendaylight.yangtools.yang.parser.spi.FeatureNamespace;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  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.InferenceContext;
  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.meta.StmtContext.Mutable;
  36 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  37 import org.slf4j.Logger;
  38 import org.slf4j.LoggerFactory;
  39
  40 abstract class AbstractIfFeatureStatementSupport
  41         extends BaseStatementSupport<IfFeatureExpr, IfFeatureStatement, IfFeatureEffectiveStatement> {
  42     private static final Logger LOG = LoggerFactory.getLogger(AbstractIfFeatureStatementSupport.class);
  43     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  44         YangStmtMapping.IF_FEATURE)
  45         .build();
  46
  47     AbstractIfFeatureStatementSupport() {
  48         super(YangStmtMapping.IF_FEATURE, CopyPolicy.CONTEXT_INDEPENDENT);
  49     }
  50
  51     @Override
  52     public final void onFullDefinitionDeclared(
  53             final Mutable<IfFeatureExpr, IfFeatureStatement, IfFeatureEffectiveStatement> stmt) {
  54         super.onFullDefinitionDeclared(stmt);
  55
  56         final ModelActionBuilder verifyFeatures = stmt.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
  57         final Map<Prerequisite<?>, QName> backRef = new HashMap<>();
  58         for (QName feature : stmt.getArgument().getReferencedFeatures()) {
  59             backRef.put(verifyFeatures.requiresCtx(stmt, FeatureNamespace.class, feature,
  60                 ModelProcessingPhase.EFFECTIVE_MODEL), feature);
  61         }
  62
  63         verifyFeatures.apply(new InferenceAction() {
  64             @Override
  65             public void apply(final InferenceContext ctx) {
  66                 LOG.debug("Resolved all feature references in {}", backRef.values());
  67             }
  68
  69             @Override
  70             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
  71                 final Set<QName> unresolvedFeatures = new HashSet<>();
  72                 for (Prerequisite<?> prereq : failed) {
  73                     unresolvedFeatures.add(verifyNotNull(backRef.get(prereq)));
  74                 }
  75
  76                 throw new InferenceException(stmt.sourceReference(),
  77                     "Failed to resolve feature references %s in \"%s\"", unresolvedFeatures, stmt.rawArgument());
  78             }
  79         });
  80     }
  81
  82     @Override
  83     protected final SubstatementValidator getSubstatementValidator() {
  84         return SUBSTATEMENT_VALIDATOR;
  85     }
  86
  87     @Override
  88     protected final IfFeatureStatement createDeclared(final StmtContext<IfFeatureExpr, IfFeatureStatement, ?> ctx,
  89             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  90         return new RegularIfFeatureStatement(ctx.getRawArgument(), ctx.getArgument(), substatements);
  91     }
  92
  93     @Override
  94     protected final IfFeatureStatement createEmptyDeclared(
  95             final StmtContext<IfFeatureExpr, IfFeatureStatement, ?> ctx) {
  96         return new EmptyIfFeatureStatement(ctx.getRawArgument(), ctx.getArgument());
  97     }
  98
  99     @Override
 100     protected final IfFeatureEffectiveStatement createEffective(final Current<IfFeatureExpr, IfFeatureStatement> stmt,
 101             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 102         return substatements.isEmpty() ? new EmptyIfFeatureEffectiveStatement(stmt.declared())
 103             : new RegularIfFeatureEffectiveStatement(stmt.declared(), substatements);
 104     }
 105 }