yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/deviation/DeviationStatementSupport.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.deviation;
   9
  10 import com.google.common.collect.ImmutableList;
  11 import com.google.common.collect.Iterables;
  12 import org.opendaylight.yangtools.yang.common.QNameModule;
  13 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  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.DeviationEffectiveStatement;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.DeviationStatement;
  18 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier.Absolute;
  19 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.ArgumentUtils;
  20 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStatementSupport;
  21 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  22 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
  25 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  26 import org.opendaylight.yangtools.yang.parser.spi.source.ModuleCtxToModuleQName;
  27
  28 public final class DeviationStatementSupport
  29         extends BaseStatementSupport<Absolute, DeviationStatement, DeviationEffectiveStatement> {
  30     private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(YangStmtMapping
  31         .DEVIATION)
  32         .addOptional(YangStmtMapping.DESCRIPTION)
  33         .addAny(YangStmtMapping.DEVIATE)
  34         .addOptional(YangStmtMapping.REFERENCE)
  35         .build();
  36     private static final DeviationStatementSupport INSTANCE = new DeviationStatementSupport();
  37
  38     private DeviationStatementSupport() {
  39         super(YangStmtMapping.DEVIATION);
  40     }
  41
  42     public static DeviationStatementSupport getInstance() {
  43         return INSTANCE;
  44     }
  45
  46     @Override
  47     public Absolute parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
  48         return ArgumentUtils.parseAbsoluteSchemaNodeIdentifier(ctx, value);
  49     }
  50
  51     @Override
  52     public void onFullDefinitionDeclared(
  53             final Mutable<Absolute, DeviationStatement, DeviationEffectiveStatement> ctx) {
  54         final QNameModule currentModule = ctx.getFromNamespace(ModuleCtxToModuleQName.class,
  55                 ctx.getRoot());
  56         final QNameModule targetModule = Iterables.getLast(ctx.coerceStatementArgument().getNodeIdentifiers())
  57                 .getModule();
  58
  59         if (currentModule.equals(targetModule)) {
  60             throw new InferenceException(ctx.getStatementSourceReference(),
  61                     "Deviation must not target the same module as the one it is defined in: %s", currentModule);
  62         }
  63     }
  64
  65     @Override
  66     protected SubstatementValidator getSubstatementValidator() {
  67         return SUBSTATEMENT_VALIDATOR;
  68     }
  69
  70     @Override
  71     protected DeviationStatement createDeclared(final StmtContext<Absolute, DeviationStatement, ?> ctx,
  72             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
  73         return new DeviationStatementImpl(ctx.coerceRawStatementArgument(), ctx.coerceStatementArgument(),
  74             substatements);
  75     }
  76
  77     @Override
  78     protected DeviationStatement createEmptyDeclared(final StmtContext<Absolute, DeviationStatement, ?> ctx) {
  79         return createDeclared(ctx, ImmutableList.of());
  80     }
  81
  82     @Override
  83     protected DeviationEffectiveStatement createEffective(final Current<Absolute, DeviationStatement> stmt,
  84             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
  85         return new DeviationEffectiveStatementImpl(stmt.declared(), substatements);
  86     }
  87 }