yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/AbstractLeafrefSpecificationSupport.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.type;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import org.opendaylight.yangtools.yang.common.QName;
  12 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  13 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  14 import org.opendaylight.yangtools.yang.model.api.stmt.PathEffectiveStatement;
  15 import org.opendaylight.yangtools.yang.model.api.stmt.RequireInstanceEffectiveStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement.LeafrefSpecification;
  17 import org.opendaylight.yangtools.yang.model.parser.api.YangParserConfiguration;
  18 import org.opendaylight.yangtools.yang.model.ri.type.BaseTypes;
  19 import org.opendaylight.yangtools.yang.model.ri.type.LeafrefTypeBuilder;
  20 import org.opendaylight.yangtools.yang.parser.spi.meta.CommonStmtCtx;
  21 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  22 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  23 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  24
  25 abstract class AbstractLeafrefSpecificationSupport extends AbstractTypeSupport<LeafrefSpecification> {
  26     AbstractLeafrefSpecificationSupport(final YangParserConfiguration config) {
  27         super(config);
  28     }
  29
  30     @Override
  31     protected final LeafrefSpecification createDeclared(final StmtContext<QName, LeafrefSpecification, ?> ctx,
  32             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  33         if (substatements.isEmpty()) {
  34             throw noPath(ctx);
  35         }
  36         return new LeafrefSpecificationImpl(ctx.getRawArgument(), ctx.getArgument(), substatements);
  37     }
  38
  39     @Override
  40     protected EffectiveStatement<QName, LeafrefSpecification> createEffective(
  41             final Current<QName, LeafrefSpecification> stmt,
  42             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  43         if (substatements.isEmpty()) {
  44             throw noPath(stmt);
  45         }
  46
  47         final LeafrefTypeBuilder builder = BaseTypes.leafrefTypeBuilder(stmt.argumentAsTypeQName());
  48
  49         for (final EffectiveStatement<?, ?> subStmt : substatements) {
  50             if (subStmt instanceof PathEffectiveStatement) {
  51                 builder.setPathStatement(((PathEffectiveStatement) subStmt).argument());
  52             } else if (subStmt instanceof RequireInstanceEffectiveStatement) {
  53                 builder.setRequireInstance(((RequireInstanceEffectiveStatement)subStmt).argument());
  54             }
  55         }
  56
  57         return new TypeEffectiveStatementImpl<>(stmt.declared(), substatements, builder);
  58     }
  59
  60     private static SourceException noPath(final CommonStmtCtx stmt) {
  61         /*
  62          *  https://tools.ietf.org/html/rfc7950#section-9.12
  63          *
  64          *     When the type is "union", the "type" statement (Section 7.4) MUST be
  65          *     present.
  66          */
  67         return new SourceException("A path statement has to be present", stmt);
  68     }
  69 }