parser/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/meta/YangVersionStatementSupport.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.YangVersion;
  12 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  13 import org.opendaylight.yangtools.yang.model.api.meta.DeclarationReference;
  14 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  15 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.YangVersionEffectiveStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.YangVersionStatement;
  18 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatementDecorators;
  19 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  20 import org.opendaylight.yangtools.yang.model.ri.stmt.EffectiveStatements;
  21 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
  22 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStatementSupport;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.BoundStmtCtx;
  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.SubstatementValidator;
  28 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  29
  30 public final class YangVersionStatementSupport
  31         extends AbstractStatementSupport<YangVersion, YangVersionStatement, YangVersionEffectiveStatement> {
  32     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
  33         SubstatementValidator.builder(YangStmtMapping.YANG_VERSION).build();
  34
  35     public YangVersionStatementSupport(final YangParserConfiguration config) {
  36         super(YangStmtMapping.YANG_VERSION, StatementPolicy.reject(), config, SUBSTATEMENT_VALIDATOR);
  37     }
  38
  39     @Override
  40     public YangVersion parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  41         return SourceException.throwIfNull(YangVersion.forString(value), ctx,  "Unsupported YANG version %s", value);
  42     }
  43
  44     @Override
  45     public void onPreLinkageDeclared(
  46             final Mutable<YangVersion, YangVersionStatement, YangVersionEffectiveStatement> stmt) {
  47         stmt.setRootVersion(stmt.argument());
  48     }
  49
  50     @Override
  51     protected YangVersionStatement createDeclared(final BoundStmtCtx<YangVersion> ctx,
  52             final ImmutableList<DeclaredStatement<?>> substatements) {
  53         return DeclaredStatements.createYangVersion(ctx.getArgument(), substatements);
  54     }
  55
  56     @Override
  57     protected YangVersionStatement attachDeclarationReference(final YangVersionStatement stmt,
  58             final DeclarationReference reference) {
  59         return DeclaredStatementDecorators.decorateYangVersion(stmt, reference);
  60     }
  61
  62     @Override
  63     protected YangVersionEffectiveStatement createEffective(final Current<YangVersion, YangVersionStatement> stmt,
  64             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  65         return EffectiveStatements.createYangVersion(stmt.declared(), substatements);
  66     }
  67 }