parser/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/meta/FeatureStatementSupport.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.meta;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import org.opendaylight.yangtools.yang.common.Empty;
  12 import org.opendaylight.yangtools.yang.common.QName;
  13 import org.opendaylight.yangtools.yang.model.api.Status;
  14 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  15 import org.opendaylight.yangtools.yang.model.api.meta.DeclarationReference;
  16 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  17 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.FeatureEffectiveStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.FeatureStatement;
  20 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
  21 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatementDecorators;
  22 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  23 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
  24 import org.opendaylight.yangtools.yang.model.spi.meta.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
  25 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
  26 import org.opendaylight.yangtools.yang.parser.spi.FeatureNamespace;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractQNameStatementSupport;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  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.StmtContextUtils;
  32 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  33 import org.opendaylight.yangtools.yang.parser.spi.source.SupportedFeaturesNamespace;
  34
  35 public final class FeatureStatementSupport
  36         extends AbstractQNameStatementSupport<FeatureStatement, FeatureEffectiveStatement> {
  37     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
  38         SubstatementValidator.builder(YangStmtMapping.FEATURE)
  39             .addOptional(YangStmtMapping.DESCRIPTION)
  40             .addAny(YangStmtMapping.IF_FEATURE)
  41             .addOptional(YangStmtMapping.STATUS)
  42             .addOptional(YangStmtMapping.REFERENCE)
  43             .build();
  44
  45     public FeatureStatementSupport(final YangParserConfiguration config) {
  46         super(YangStmtMapping.FEATURE, StatementPolicy.reject(), config, SUBSTATEMENT_VALIDATOR);
  47     }
  48
  49     @Override
  50     public QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  51         return StmtContextUtils.parseIdentifier(ctx, value);
  52     }
  53
  54     @Override
  55     public void onFullDefinitionDeclared(final Mutable<QName, FeatureStatement, FeatureEffectiveStatement> stmt) {
  56         super.onFullDefinitionDeclared(stmt);
  57         stmt.addContext(FeatureNamespace.class, stmt.getArgument(), stmt);
  58
  59         // Do not build effective statement if supported features does not include this feature
  60         final var supportedFeatures = stmt.getFromNamespace(SupportedFeaturesNamespace.class, Empty.value());
  61         if (supportedFeatures != null && !supportedFeatures.contains(stmt.getArgument())) {
  62             stmt.setUnsupported();
  63         }
  64     }
  65
  66     @Override
  67     protected FeatureStatement createDeclared(final StmtContext<QName, FeatureStatement, ?> ctx,
  68             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  69         return DeclaredStatements.createFeature(ctx.getArgument(), substatements);
  70     }
  71
  72     @Override
  73     protected FeatureStatement attachDeclarationReference(final FeatureStatement stmt,
  74             final DeclarationReference reference) {
  75         return DeclaredStatementDecorators.decorateFeature(stmt, reference);
  76     }
  77
  78     @Override
  79     protected FeatureEffectiveStatement createEffective(final Current<QName, FeatureStatement> stmt,
  80             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  81         return EffectiveStatements.createFeature(stmt.declared(), computeFlags(substatements), substatements);
  82     }
  83
  84     private static int computeFlags(final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  85         return new FlagsBuilder()
  86                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
  87                 .toFlags();
  88     }
  89 }