yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/if_feature/IfFeatureStatementSupport.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 java.util.Collection;
  13 import java.util.HashMap;
  14 import java.util.HashSet;
  15 import java.util.Map;
  16 import java.util.Set;
  17 import org.opendaylight.yangtools.yang.common.QName;
  18 import org.opendaylight.yangtools.yang.common.YangVersion;
  19 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  20 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  21 import org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureExpr;
  22 import org.opendaylight.yangtools.yang.model.api.stmt.IfFeatureStatement;
  23 import org.opendaylight.yangtools.yang.parser.spi.FeatureNamespace;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  26 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceAction;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.InferenceContext;
  29 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder.Prerequisite;
  30 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
  31 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  32 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  33 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  34 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  35 import org.slf4j.Logger;
  36 import org.slf4j.LoggerFactory;
  37
  38 public final class IfFeatureStatementSupport extends AbstractStatementSupport<IfFeatureExpr, IfFeatureStatement,
  39         EffectiveStatement<IfFeatureExpr, IfFeatureStatement>> {
  40     private static final Logger LOG = LoggerFactory.getLogger(IfFeatureStatementSupport.class);
  41     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  42         YangStmtMapping.IF_FEATURE)
  43         .build();
  44     private static final IfFeatureStatementSupport INSTANCE = new IfFeatureStatementSupport();
  45
  46     private IfFeatureStatementSupport() {
  47         super(YangStmtMapping.IF_FEATURE);
  48     }
  49
  50     public static IfFeatureStatementSupport getInstance() {
  51         return INSTANCE;
  52     }
  53
  54     @Override
  55     public IfFeatureExpr parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  56         if (YangVersion.VERSION_1_1.equals(ctx.getRootVersion())) {
  57             return IfFeaturePredicateVisitor.parseIfFeatureExpression(ctx, value);
  58         }
  59         return IfFeatureExpr.isPresent(StmtContextUtils.parseNodeIdentifier(ctx, value));
  60     }
  61
  62     @Override
  63     public void onFullDefinitionDeclared(final Mutable<IfFeatureExpr, IfFeatureStatement,
  64             EffectiveStatement<IfFeatureExpr, IfFeatureStatement>> stmt) {
  65         super.onFullDefinitionDeclared(stmt);
  66
  67         final ModelActionBuilder verifyFeatures = stmt.newInferenceAction(ModelProcessingPhase.EFFECTIVE_MODEL);
  68         final Map<Prerequisite<?>, QName> backRef = new HashMap<>();
  69         for (QName feature : stmt.getStatementArgument().getReferencedFeatures()) {
  70             backRef.put(verifyFeatures.requiresCtx(stmt, FeatureNamespace.class, feature,
  71                 ModelProcessingPhase.EFFECTIVE_MODEL), feature);
  72         }
  73
  74         verifyFeatures.apply(new InferenceAction() {
  75             @Override
  76             public void apply(final InferenceContext ctx) {
  77                 LOG.debug("Resolved all feature references in {}", backRef.values());
  78             }
  79
  80             @Override
  81             public void prerequisiteFailed(final Collection<? extends Prerequisite<?>> failed) {
  82                 final Set<QName> unresolvedFeatures = new HashSet<>();
  83                 for (Prerequisite<?> prereq : failed) {
  84                     unresolvedFeatures.add(verifyNotNull(backRef.get(prereq)));
  85                 }
  86
  87                 throw new InferenceException(stmt.getStatementSourceReference(),
  88                     "Failed to resolve feature references %s in \"%s\"", unresolvedFeatures,
  89                     stmt.rawStatementArgument());
  90             }
  91         });
  92     }
  93
  94     @Override
  95     public IfFeatureStatement createDeclared(final StmtContext<IfFeatureExpr, IfFeatureStatement, ?> ctx) {
  96         return new IfFeatureStatementImpl(ctx);
  97     }
  98
  99     @Override
 100     public EffectiveStatement<IfFeatureExpr, IfFeatureStatement> createEffective(
 101             final StmtContext<IfFeatureExpr, IfFeatureStatement,
 102             EffectiveStatement<IfFeatureExpr, IfFeatureStatement>> ctx) {
 103         return new IfFeatureEffectiveStatementImpl(ctx);
 104     }
 105
 106     @Override
 107     protected SubstatementValidator getSubstatementValidator() {
 108         return SUBSTATEMENT_VALIDATOR;
 109     }
 110 }