2 * Copyright (c) 2017 Pantheon Technologies, s.r.o. and others. All rights reserved.
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
8 package org.opendaylight.yangtools.yang.parser.rfc7950.stmt.type;
10 import com.google.common.collect.ImmutableList;
11 import java.util.Optional;
12 import org.opendaylight.yangtools.yang.common.QName;
13 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
14 import org.opendaylight.yangtools.yang.model.api.meta.DeclarationReference;
15 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
16 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
17 import org.opendaylight.yangtools.yang.model.api.stmt.EnumEffectiveStatement;
18 import org.opendaylight.yangtools.yang.model.api.stmt.TypeStatement.EnumSpecification;
19 import org.opendaylight.yangtools.yang.model.api.stmt.ValueEffectiveStatement;
20 import org.opendaylight.yangtools.yang.model.api.type.EnumTypeDefinition.EnumPair;
21 import org.opendaylight.yangtools.yang.model.ri.type.BaseTypes;
22 import org.opendaylight.yangtools.yang.model.ri.type.EnumerationTypeBuilder;
23 import org.opendaylight.yangtools.yang.parser.api.YangParserConfiguration;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.CommonStmtCtx;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
28 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
30 final class EnumSpecificationSupport extends AbstractTypeSupport<EnumSpecification> {
31 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
32 SubstatementValidator.builder(YangStmtMapping.TYPE).addMultiple(YangStmtMapping.ENUM).build();
34 EnumSpecificationSupport(final YangParserConfiguration config) {
39 protected SubstatementValidator getSubstatementValidator() {
40 return SUBSTATEMENT_VALIDATOR;
44 protected EnumSpecification createDeclared(final StmtContext<QName, EnumSpecification, ?> ctx,
45 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
46 if (substatements.isEmpty()) {
49 return new EnumSpecificationImpl(ctx.getRawArgument(), ctx.getArgument(), substatements);
53 protected EnumSpecification attachDeclarationReference(final EnumSpecification stmt,
54 final DeclarationReference reference) {
55 return new RefEnumSpecification(stmt, reference);
59 protected EffectiveStatement<QName, EnumSpecification> createEffective(
60 final Current<QName, EnumSpecification> stmt,
61 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
62 if (substatements.isEmpty()) {
66 final EnumerationTypeBuilder builder = BaseTypes.enumerationTypeBuilder(stmt.argumentAsTypeQName());
67 Integer highestValue = null;
68 for (final EffectiveStatement<?, ?> subStmt : substatements) {
69 if (subStmt instanceof EnumEffectiveStatement) {
70 final EnumEffectiveStatement enumSubStmt = (EnumEffectiveStatement) subStmt;
72 final Optional<Integer> declaredValue =
73 enumSubStmt.findFirstEffectiveSubstatementArgument(ValueEffectiveStatement.class);
74 final int effectiveValue;
75 if (declaredValue.isEmpty()) {
76 if (highestValue != null) {
77 SourceException.throwIf(highestValue == 2147483647, stmt,
78 "Enum '%s' must have a value statement", enumSubStmt);
79 effectiveValue = highestValue + 1;
84 effectiveValue = declaredValue.orElseThrow();
87 final EnumPair pair = EffectiveTypeUtil.buildEnumPair(enumSubStmt, effectiveValue);
88 if (highestValue == null || highestValue < pair.getValue()) {
89 highestValue = pair.getValue();
92 builder.addEnum(pair);
96 return new TypeEffectiveStatementImpl<>(stmt.declared(), substatements, builder);
99 private static SourceException noEnum(final CommonStmtCtx stmt) {
101 * https://tools.ietf.org/html/rfc7950#section-9.6.4
103 * The "enum" statement, which is a substatement to the "type"
104 * statement, MUST be present if the type is "enumeration".
106 return new SourceException("At least one enum statement has to be present", stmt);