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.model.api.YangStmtMapping;
13 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
14 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
15 import org.opendaylight.yangtools.yang.model.api.stmt.EnumEffectiveStatement;
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.EnumPair;
19 import org.opendaylight.yangtools.yang.model.util.type.BaseTypes;
20 import org.opendaylight.yangtools.yang.model.util.type.EnumerationTypeBuilder;
21 import org.opendaylight.yangtools.yang.parser.spi.meta.AbstractStringStatementSupport;
22 import org.opendaylight.yangtools.yang.parser.spi.meta.CommonStmtCtx;
23 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStmtCtx.Current;
24 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
25 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
26 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
28 final class EnumSpecificationSupport
29 extends AbstractStringStatementSupport<EnumSpecification, EffectiveStatement<String, EnumSpecification>> {
30 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR =
31 SubstatementValidator.builder(YangStmtMapping.TYPE).addMultiple(YangStmtMapping.ENUM).build();
33 EnumSpecificationSupport() {
34 super(YangStmtMapping.TYPE, StatementPolicy.exactReplica());
38 protected SubstatementValidator getSubstatementValidator() {
39 return SUBSTATEMENT_VALIDATOR;
43 protected EnumSpecification createDeclared(final StmtContext<String, EnumSpecification, ?> ctx,
44 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
45 return new EnumSpecificationImpl(ctx.getRawArgument(), substatements);
49 protected EnumSpecification createEmptyDeclared(final StmtContext<String, EnumSpecification, ?> ctx) {
54 protected EffectiveStatement<String, EnumSpecification> createEffective(
55 final Current<String, EnumSpecification> stmt,
56 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
57 if (substatements.isEmpty()) {
61 final EnumerationTypeBuilder builder = BaseTypes.enumerationTypeBuilder(stmt.argumentAsTypeQName());
62 Integer highestValue = null;
63 for (final EffectiveStatement<?, ?> subStmt : substatements) {
64 if (subStmt instanceof EnumEffectiveStatement) {
65 final EnumEffectiveStatement enumSubStmt = (EnumEffectiveStatement) subStmt;
67 final Optional<Integer> declaredValue =
68 enumSubStmt.findFirstEffectiveSubstatementArgument(ValueEffectiveStatement.class);
69 final int effectiveValue;
70 if (declaredValue.isEmpty()) {
71 if (highestValue != null) {
72 SourceException.throwIf(highestValue == 2147483647, stmt,
73 "Enum '%s' must have a value statement", enumSubStmt);
74 effectiveValue = highestValue + 1;
79 effectiveValue = declaredValue.orElseThrow();
82 final EnumPair pair = EffectiveTypeUtil.buildEnumPair(enumSubStmt, effectiveValue);
83 if (highestValue == null || highestValue < pair.getValue()) {
84 highestValue = pair.getValue();
87 builder.addEnum(pair);
91 return new TypeEffectiveStatementImpl<>(stmt.declared(), substatements, builder);
94 private static SourceException noEnum(final CommonStmtCtx stmt) {
96 * https://tools.ietf.org/html/rfc7950#section-9.6.4
98 * The "enum" statement, which is a substatement to the "type"
99 * statement, MUST be present if the type is "enumeration".
101 return new SourceException("At least one enum statement has to be present", stmt);