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.key;
10 import static com.google.common.base.Verify.verify;
12 import com.google.common.base.Splitter;
13 import com.google.common.collect.ImmutableList;
14 import com.google.common.collect.ImmutableSet;
15 import com.google.common.collect.ImmutableSet.Builder;
17 import org.eclipse.jdt.annotation.NonNull;
18 import org.opendaylight.yangtools.yang.common.QName;
19 import org.opendaylight.yangtools.yang.common.QNameModule;
20 import org.opendaylight.yangtools.yang.model.api.YangStmtMapping;
21 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
22 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
23 import org.opendaylight.yangtools.yang.model.api.stmt.KeyEffectiveStatement;
24 import org.opendaylight.yangtools.yang.model.api.stmt.KeyStatement;
25 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.BaseStatementSupport;
26 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
27 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
28 import org.opendaylight.yangtools.yang.parser.spi.meta.SubstatementValidator;
29 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
31 public final class KeyStatementSupport
32 extends BaseStatementSupport<Set<QName>, KeyStatement, KeyEffectiveStatement> {
33 private static final Splitter LIST_KEY_SPLITTER = Splitter.on(' ').omitEmptyStrings().trimResults();
34 private static final SubstatementValidator SUBSTATEMENT_VALIDATOR = SubstatementValidator.builder(
37 private static final KeyStatementSupport INSTANCE = new KeyStatementSupport();
39 private KeyStatementSupport() {
40 super(YangStmtMapping.KEY);
43 public static KeyStatementSupport getInstance() {
48 public ImmutableSet<QName> parseArgumentValue(final StmtContext<?, ?, ?> ctx, final String value) {
49 final Builder<QName> builder = ImmutableSet.builder();
51 for (String keyToken : LIST_KEY_SPLITTER.split(value)) {
52 builder.add(StmtContextUtils.parseNodeIdentifier(ctx, keyToken));
56 // Throws NPE on nulls, retains first inserted value, cannot be modified
57 final ImmutableSet<QName> ret = builder.build();
58 SourceException.throwIf(ret.size() != tokens, ctx.getStatementSourceReference(),
59 "Key argument '%s' contains duplicates", value);
64 public Set<QName> adaptArgumentValue(final StmtContext<Set<QName>, KeyStatement, KeyEffectiveStatement> ctx,
65 final QNameModule targetModule) {
66 final Builder<QName> builder = ImmutableSet.builder();
67 boolean replaced = false;
68 for (final QName qname : ctx.coerceStatementArgument()) {
69 if (!targetModule.equals(qname.getModule())) {
70 final QName newQname = qname.bindTo(targetModule).intern();
71 builder.add(newQname);
78 // This makes sure we reuse the collection when a grouping is
79 // instantiated in the same module
80 return replaced ? builder.build() : ctx.getStatementArgument();
84 protected SubstatementValidator getSubstatementValidator() {
85 return SUBSTATEMENT_VALIDATOR;
89 protected KeyStatement createDeclared(final StmtContext<Set<QName>, KeyStatement, ?> ctx,
90 final ImmutableList<? extends DeclaredStatement<?>> substatements) {
91 return new RegularKeyStatement(ctx, substatements);
95 protected KeyStatement createEmptyDeclared(final StmtContext<Set<QName>, KeyStatement, ?> ctx) {
96 return new EmptyKeyStatement(ctx);
100 protected KeyEffectiveStatement createEffective(
101 final StmtContext<Set<QName>, KeyStatement, KeyEffectiveStatement> ctx, final KeyStatement declared,
102 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
103 final Set<QName> arg = ctx.coerceStatementArgument();
104 return arg.equals(declared.argument()) ? new RegularLocalKeyEffectiveStatement(declared, substatements)
105 : new RegularForeignKeyEffectiveStatement(declared, arg, substatements);
109 protected KeyEffectiveStatement createEmptyEffective(
110 final StmtContext<Set<QName>, KeyStatement, KeyEffectiveStatement> ctx, final KeyStatement declared) {
111 final Set<QName> arg = ctx.coerceStatementArgument();
112 return arg.equals(declared.argument()) ? new EmptyLocalKeyEffectiveStatement(declared)
113 : new EmptyForeignKeyEffectiveStatement(declared, arg);
116 static @NonNull Object maskSet(final @NonNull Set<QName> set) {
117 return set.size() == 1 ? set.iterator().next() : set;
120 @SuppressWarnings("unchecked")
121 static @NonNull Set<QName> unmaskSet(final @NonNull Object masked) {
122 if (masked instanceof Set) {
123 return (Set<QName>) masked;
125 verify(masked instanceof QName, "Unexpected argument %s", masked);
126 return ImmutableSet.of((QName) masked);