yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/feature/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.feature;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import org.eclipse.jdt.annotation.NonNull;
  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.DeclaredStatement;
  16 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.FeatureEffectiveStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.FeatureStatement;
  19 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
  20 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  21 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
  22 import org.opendaylight.yangtools.yang.parser.spi.FeatureNamespace;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractQNameStatementSupport;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  26 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  28 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  29
  30 public final class FeatureStatementSupport
  31         extends AbstractQNameStatementSupport<FeatureStatement, FeatureEffectiveStatement> {
  32     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  33         YangStmtMapping.FEATURE)
  34         .addOptional(YangStmtMapping.DESCRIPTION)
  35         .addAny(YangStmtMapping.IF_FEATURE)
  36         .addOptional(YangStmtMapping.STATUS)
  37         .addOptional(YangStmtMapping.REFERENCE)
  38         .build();
  39     private static final FeatureStatementSupport INSTANCE = new FeatureStatementSupport();
  40     private static final int EMPTY_EFFECTIVE_FLAGS = new FlagsBuilder().setStatus(Status.CURRENT).toFlags();
  41
  42     private FeatureStatementSupport() {
  43         super(YangStmtMapping.FEATURE, StatementPolicy.reject());
  44     }
  45
  46     public static FeatureStatementSupport getInstance() {
  47         return INSTANCE;
  48     }
  49
  50     @Override
  51     public QName parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  52         return StmtContextUtils.parseIdentifier(ctx, value);
  53     }
  54
  55     @Override
  56     public void onFullDefinitionDeclared(final Mutable<QName, FeatureStatement, FeatureEffectiveStatement> stmt) {
  57         super.onFullDefinitionDeclared(stmt);
  58         stmt.addContext(FeatureNamespace.class, stmt.getArgument(), stmt);
  59     }
  60
  61     @Override
  62     protected SubstatementValidator getSubstatementValidator() {
  63         return SUBSTATEMENT_VALIDATOR;
  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 createEmptyDeclared(@NonNull final StmtContext<QName, FeatureStatement, ?> ctx) {
  74         return DeclaredStatements.createFeature(ctx.getArgument());
  75     }
  76
  77     @Override
  78     protected FeatureEffectiveStatement createEffective(final Current<QName, FeatureStatement> stmt,
  79             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  80         return substatements.isEmpty()
  81             ? new EmptyFeatureEffectiveStatement(stmt.declared(), stmt.effectivePath(), EMPTY_EFFECTIVE_FLAGS)
  82                 : new RegularFeatureEffectiveStatement(stmt.declared(), stmt.effectivePath(),
  83                     computeFlags(substatements), substatements);
  84     }
  85
  86     private static int computeFlags(final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  87         return new FlagsBuilder()
  88                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
  89                 .toFlags();
  90     }
  91 }