yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/choice/ChoiceStatementSupport.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.choice;
   9
  10 import static java.util.Objects.requireNonNull;
  11
  12 import com.google.common.annotations.Beta;
  13 import com.google.common.collect.ImmutableList;
  14 import java.util.Collection;
  15 import java.util.Optional;
  16 import org.eclipse.jdt.annotation.NonNull;
  17 import org.opendaylight.yangtools.yang.common.QName;
  18 import org.opendaylight.yangtools.yang.model.api.CaseSchemaNode;
  19 import org.opendaylight.yangtools.yang.model.api.ChoiceSchemaNode;
  20 import org.opendaylight.yangtools.yang.model.api.Status;
  21 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
  22 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
  23 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  24 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
  25 import org.opendaylight.yangtools.yang.model.api.stmt.ChoiceEffectiveStatement;
  26 import org.opendaylight.yangtools.yang.model.api.stmt.ChoiceStatement;
  27 import org.opendaylight.yangtools.yang.model.api.stmt.DefaultEffectiveStatement;
  28 import org.opendaylight.yangtools.yang.model.api.stmt.MandatoryEffectiveStatement;
  29 import org.opendaylight.yangtools.yang.model.api.stmt.StatusEffectiveStatement;
  30 import org.opendaylight.yangtools.yang.model.ri.stmt.DeclaredStatements;
  31 import org.opendaylight.yangtools.yang.model.spi.meta.SubstatementIndexingException;
  32 import org.opendaylight.yangtools.yang.parser.rfc7950.reactor.YangValidationBundles;
  33 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.EffectiveStatementWithFlags.FlagsBuilder;
  34 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.case_.CaseStatementSupport;
  35 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractSchemaTreeStatementSupport;
  36 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
  37 import org.opendaylight.yangtools.yang.parser.spi.meta.ImplicitParentAwareStatementSupport;
  38 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
  39 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupport;
  40 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  41 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
  42 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  43
  44 @Beta
  45 public final class ChoiceStatementSupport
  46         extends AbstractSchemaTreeStatementSupport<ChoiceStatement, ChoiceEffectiveStatement>
  47         implements ImplicitParentAwareStatementSupport {
  48     private static final @NonNull ChoiceStatementSupport RFC6020_INSTANCE = new ChoiceStatementSupport(
  49         SubstatementValidator.builder(YangStmtMapping.CHOICE)
  50             .addAny(YangStmtMapping.ANYXML)
  51             .addAny(YangStmtMapping.CASE)
  52             .addOptional(YangStmtMapping.CONFIG)
  53             .addAny(YangStmtMapping.CONTAINER)
  54             .addOptional(YangStmtMapping.DEFAULT)
  55             .addOptional(YangStmtMapping.DESCRIPTION)
  56             .addAny(YangStmtMapping.IF_FEATURE)
  57             .addAny(YangStmtMapping.LEAF)
  58             .addAny(YangStmtMapping.LEAF_LIST)
  59             .addAny(YangStmtMapping.LIST)
  60             .addOptional(YangStmtMapping.MANDATORY)
  61             .addOptional(YangStmtMapping.REFERENCE)
  62             .addOptional(YangStmtMapping.STATUS)
  63             .addOptional(YangStmtMapping.WHEN)
  64             .build(),
  65         CaseStatementSupport.rfc6020Instance());
  66
  67     private static final @NonNull ChoiceStatementSupport RFC7950_INSTANCE = new ChoiceStatementSupport(
  68         SubstatementValidator.builder(YangStmtMapping.CHOICE)
  69             .addAny(YangStmtMapping.ANYDATA)
  70             .addAny(YangStmtMapping.ANYXML)
  71             .addAny(YangStmtMapping.CASE)
  72             .addOptional(YangStmtMapping.CONFIG)
  73             .addAny(YangStmtMapping.CONTAINER)
  74             .addOptional(YangStmtMapping.DEFAULT)
  75             .addOptional(YangStmtMapping.DESCRIPTION)
  76             .addAny(YangStmtMapping.IF_FEATURE)
  77             .addAny(YangStmtMapping.LEAF)
  78             .addAny(YangStmtMapping.LEAF_LIST)
  79             .addAny(YangStmtMapping.LIST)
  80             .addOptional(YangStmtMapping.MANDATORY)
  81             .addOptional(YangStmtMapping.REFERENCE)
  82             .addOptional(YangStmtMapping.STATUS)
  83             .addOptional(YangStmtMapping.WHEN)
  84             .build(),
  85         CaseStatementSupport.rfc7950Instance());
  86
  87     private final SubstatementValidator validator;
  88     private final CaseStatementSupport implicitCase;
  89
  90     private ChoiceStatementSupport(final SubstatementValidator validator, final CaseStatementSupport implicitCase) {
  91         super(YangStmtMapping.CHOICE, instantiatedPolicy());
  92         this.validator = requireNonNull(validator);
  93         this.implicitCase = requireNonNull(implicitCase);
  94     }
  95
  96     public static @NonNull ChoiceStatementSupport rfc6020Instance() {
  97         return RFC6020_INSTANCE;
  98     }
  99
 100     public static @NonNull ChoiceStatementSupport rfc7950Instance() {
 101         return RFC7950_INSTANCE;
 102     }
 103
 104     @Override
 105     public Optional<StatementSupport<?, ?, ?>> getImplicitParentFor(final StatementDefinition stmtDef) {
 106         return YangValidationBundles.SUPPORTED_CASE_SHORTHANDS.contains(stmtDef) ? Optional.of(implicitCase)
 107             : Optional.empty();
 108     }
 109
 110     @Override
 111     protected SubstatementValidator getSubstatementValidator() {
 112         return validator;
 113     }
 114
 115     @Override
 116     protected ChoiceStatement createDeclared(@NonNull final StmtContext<QName, ChoiceStatement, ?> ctx,
 117             final ImmutableList<? extends DeclaredStatement<?>> substatements) {
 118         return DeclaredStatements.createChoice(ctx.getArgument(), substatements);
 119     }
 120
 121     @Override
 122     protected ChoiceStatement createEmptyDeclared(@NonNull final StmtContext<QName, ChoiceStatement, ?> ctx) {
 123         return DeclaredStatements.createChoice(ctx.getArgument());
 124     }
 125
 126     @Override
 127     public ChoiceEffectiveStatement copyEffective(final Current<QName, ChoiceStatement> stmt,
 128             final ChoiceEffectiveStatement original) {
 129         return new ChoiceEffectiveStatementImpl((ChoiceEffectiveStatementImpl) original,
 130             computeFlags(stmt, original.effectiveSubstatements()), stmt.effectivePath(),
 131             (ChoiceSchemaNode) stmt.original());
 132     }
 133
 134     @Override
 135     protected ChoiceEffectiveStatement createEffective(final Current<QName, ChoiceStatement> stmt,
 136             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 137         final String defaultArg = findFirstArgument(substatements, DefaultEffectiveStatement.class, null);
 138         final CaseSchemaNode defaultCase;
 139         if (defaultArg != null) {
 140             final QName qname;
 141             try {
 142                 qname = QName.create(stmt.getArgument(), defaultArg);
 143             } catch (IllegalArgumentException e) {
 144                 throw new SourceException(stmt, e, "Default statement has invalid name '%s'", defaultArg);
 145             }
 146
 147             // FIXME: this does not work with submodules, as they are
 148             defaultCase = InferenceException.throwIfNull(findCase(qname, substatements), stmt,
 149                 "Default statement refers to missing case %s", qname);
 150         } else {
 151             defaultCase = null;
 152         }
 153
 154         try {
 155             return new ChoiceEffectiveStatementImpl(stmt.declared(), substatements, computeFlags(stmt, substatements),
 156                 stmt.effectivePath(), defaultCase, (ChoiceSchemaNode) stmt.original());
 157         } catch (SubstatementIndexingException e) {
 158             throw new SourceException(e.getMessage(), stmt, e);
 159         }
 160     }
 161
 162     private static int computeFlags(final Current<?, ?> stmt,
 163             final Collection<? extends EffectiveStatement<?, ?>> substatements) {
 164         return new FlagsBuilder()
 165             .setHistory(stmt.history())
 166             .setStatus(findFirstArgument(substatements, StatusEffectiveStatement.class, Status.CURRENT))
 167             .setConfiguration(stmt.effectiveConfig().asNullable())
 168             .setMandatory(findFirstArgument(substatements, MandatoryEffectiveStatement.class, Boolean.FALSE))
 169             .toFlags();
 170     }
 171
 172     private static CaseSchemaNode findCase(final QName qname,
 173             final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
 174         for (final EffectiveStatement<?, ?> effectiveStatement : substatements) {
 175             if (effectiveStatement instanceof CaseSchemaNode) {
 176                 final CaseSchemaNode choiceCaseNode = (CaseSchemaNode) effectiveStatement;
 177                 if (qname.equals(choiceCaseNode.getQName())) {
 178                     return choiceCaseNode;
 179                 }
 180             }
 181         }
 182
 183         return null;
 184     }
 185 }