yang/yang-parser-rfc7950/src/main/java/org/opendaylight/yangtools/yang/parser/rfc7950/stmt/type/EnumSpecificationEffectiveStatement.java

   1 /*
   2  * Copyright (c) 2015 Cisco Systems, Inc. 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 java.util.Optional;
  11 import org.eclipse.jdt.annotation.NonNull;
  12 import org.opendaylight.yangtools.yang.model.api.UnknownSchemaNode;
  13 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
  14 import org.opendaylight.yangtools.yang.model.api.stmt.EnumEffectiveStatement;
  15 import org.opendaylight.yangtools.yang.model.api.stmt.TypeEffectiveStatement;
  16 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement.EnumSpecification;
  17 import org.opendaylight.yangtools.yang.model.api.stmt.ValueEffectiveStatement;
  18 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition;
  19 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair;
  20 import org.opendaylight.yangtools.yang.model.util.type.BaseTypes;
  21 import org.opendaylight.yangtools.yang.model.util.type.EnumerationTypeBuilder;
  22 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.DeclaredEffectiveStatementBase;
  23 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
  24 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
  25
  26 final class EnumSpecificationEffectiveStatement extends DeclaredEffectiveStatementBase<String, EnumSpecification>
  27         implements TypeEffectiveStatement<EnumSpecification> {
  28
  29     private final @NonNull EnumTypeDefinition typeDefinition;
  30
  31     EnumSpecificationEffectiveStatement(
  32             final StmtContext<String, EnumSpecification, EffectiveStatement<String, EnumSpecification>> ctx) {
  33         super(ctx);
  34
  35         final EnumerationTypeBuilder builder = BaseTypes.enumerationTypeBuilder(ctx.getSchemaPath().get());
  36         Integer highestValue = null;
  37         for (final EffectiveStatement<?, ?> stmt : effectiveSubstatements()) {
  38             if (stmt instanceof EnumEffectiveStatement) {
  39                 final EnumEffectiveStatement enumSubStmt = (EnumEffectiveStatement) stmt;
  40
  41                 final Optional<Integer> declaredValue =
  42                         enumSubStmt.findFirstEffectiveSubstatementArgument(ValueEffectiveStatement.class);
  43                 final int effectiveValue;
  44                 if (declaredValue.isEmpty()) {
  45                     if (highestValue != null) {
  46                         SourceException.throwIf(highestValue == 2147483647, ctx.getStatementSourceReference(),
  47                                 "Enum '%s' must have a value statement", enumSubStmt);
  48                         effectiveValue = highestValue + 1;
  49                     } else {
  50                         effectiveValue = 0;
  51                     }
  52                 } else {
  53                     effectiveValue = declaredValue.orElseThrow();
  54                 }
  55
  56                 final EnumPair pair = EffectiveTypeUtil.buildEnumPair(enumSubStmt, effectiveValue);
  57                 if (highestValue == null || highestValue < pair.getValue()) {
  58                     highestValue = pair.getValue();
  59                 }
  60
  61                 builder.addEnum(pair);
  62             }
  63             if (stmt instanceof UnknownSchemaNode) {
  64                 builder.addUnknownSchemaNode((UnknownSchemaNode) stmt);
  65             }
  66         }
  67
  68         typeDefinition = builder.build();
  69     }
  70
  71     @Override
  72     public EnumTypeDefinition getTypeDefinition() {
  73         return typeDefinition;
  74     }
  75 }