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.parser.rfc7950.stmt.BaseQNameStatementSupport;
  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.EffectiveStmtCtx.Current;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  26 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
  27 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  28
  29 public final class FeatureStatementSupport
  30         extends BaseQNameStatementSupport<FeatureStatement, FeatureEffectiveStatement> {
  31     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
  32         YangStmtMapping.FEATURE)
  33         .addOptional(YangStmtMapping.DESCRIPTION)
  34         .addAny(YangStmtMapping.IF_FEATURE)
  35         .addOptional(YangStmtMapping.STATUS)
  36         .addOptional(YangStmtMapping.REFERENCE)
  37         .build();
  38     private static final FeatureStatementSupport INSTANCE = new FeatureStatementSupport();
  39     private static final int EMPTY_EFFECTIVE_FLAGS = new FlagsBuilder().setStatus(Status.CURRENT).toFlags();
  40
  41     private FeatureStatementSupport() {
  42         super(YangStmtMapping.FEATURE, CopyPolicy.REJECT);
  43     }
  44
  45     public static FeatureStatementSupport getInstance() {
  46         return INSTANCE;
  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
  60     @Override
  61     protected SubstatementValidator getSubstatementValidator() {
  62         return SUBSTATEMENT_VALIDATOR;
  63     }
  64
  65     @Override
  66     protected FeatureStatement createDeclared(final StmtContext<QName, FeatureStatement, ?> ctx,
  67             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  68         return new RegularFeatureStatement(ctx.getArgument(), substatements);
  69     }
  70
  71     @Override
  72     protected FeatureStatement createEmptyDeclared(@NonNull final StmtContext<QName, FeatureStatement, ?> ctx) {
  73         return new EmptyFeatureStatement(ctx.getArgument());
  74     }
  75
  76     @Override
  77     protected FeatureEffectiveStatement createEffective(final Current<QName, FeatureStatement> stmt,
  78             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  79         return substatements.isEmpty()
  80             ? new EmptyFeatureEffectiveStatement(stmt.declared(), stmt.wrapSchemaPath(), EMPTY_EFFECTIVE_FLAGS)
  81                 : new RegularFeatureEffectiveStatement(stmt.declared(), stmt.wrapSchemaPath(),
  82                     computeFlags(substatements), substatements);
  83     }
  84
  85     private static int computeFlags(final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  86         return new FlagsBuilder()
  87                 .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
  88                 .toFlags();
  89     }
  90 }