2 * Copyright (c) 2021 PANTHEON.tech, 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.mdsal.binding.generator.impl.reactor;
10 import static com.google.common.base.Verify.verify;
11 import static com.google.common.base.Verify.verifyNotNull;
12 import static java.util.Objects.requireNonNull;
14 import com.google.common.collect.ImmutableList;
15 import java.util.Comparator;
16 import java.util.Iterator;
17 import java.util.List;
18 import java.util.Optional;
19 import org.eclipse.jdt.annotation.NonNull;
20 import org.eclipse.jdt.annotation.Nullable;
21 import org.opendaylight.mdsal.binding.generator.impl.reactor.CollisionDomain.Member;
22 import org.opendaylight.mdsal.binding.generator.impl.rt.DefaultAugmentRuntimeType;
23 import org.opendaylight.mdsal.binding.model.api.GeneratedType;
24 import org.opendaylight.mdsal.binding.model.api.type.builder.GeneratedTypeBuilder;
25 import org.opendaylight.mdsal.binding.model.api.type.builder.GeneratedTypeBuilderBase;
26 import org.opendaylight.mdsal.binding.model.ri.BindingTypes;
27 import org.opendaylight.mdsal.binding.runtime.api.AugmentRuntimeType;
28 import org.opendaylight.mdsal.binding.runtime.api.CaseRuntimeType;
29 import org.opendaylight.mdsal.binding.runtime.api.RuntimeType;
30 import org.opendaylight.yangtools.odlext.model.api.AugmentIdentifierEffectiveStatement;
31 import org.opendaylight.yangtools.yang.common.AbstractQName;
32 import org.opendaylight.yangtools.yang.common.QName;
33 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
34 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentEffectiveStatement;
35 import org.opendaylight.yangtools.yang.model.api.stmt.ChoiceEffectiveStatement;
36 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeAwareEffectiveStatement;
37 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeAwareEffectiveStatement.SchemaTreeNamespace;
38 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeEffectiveStatement;
39 import org.opendaylight.yangtools.yang.model.util.SchemaInferenceStack;
42 * A generator corresponding to a {@code augment} statement. This class is further specialized for the two distinct uses
45 abstract class AbstractAugmentGenerator
46 extends AbstractCompositeGenerator<AugmentEffectiveStatement, AugmentRuntimeType> {
48 * Comparator comparing target path length. This is useful for quickly determining order the order in which two
49 * (or more) {@link AbstractAugmentGenerator}s need to be evaluated. This is necessary when augments are layered on
68 * Evaluating these in the order of increasing argument component count solves this without having to perform a full
72 * Another problem we are solving here is augmentation target stability, as the declared order in YANG text may
73 * change, which does not really change the semantics. If we only relied on length of argument, such a move would
74 * result in changing the results of {@link #createMember(CollisionDomain)} and make upgrades rather unpredictable.
75 * We solve this by using {@link QName#compareTo(QName)} to determine order.
77 static final Comparator<? super AbstractAugmentGenerator> COMPARATOR = (o1, o2) -> {
78 final Iterator<QName> thisIt = o1.statement().argument().getNodeIdentifiers().iterator();
79 final Iterator<QName> otherIt = o2.statement().argument().getNodeIdentifiers().iterator();
81 while (thisIt.hasNext()) {
82 if (!otherIt.hasNext()) {
86 final int comp = thisIt.next().compareTo(otherIt.next());
92 return otherIt.hasNext() ? -1 : 0;
95 private SchemaTreeAwareEffectiveStatement<?, ?> targetStatement;
96 private AbstractCompositeGenerator<?, ?> targetGen;
97 private Optional<AugmentRuntimeType> internalRuntimeType;
99 AbstractAugmentGenerator(final AugmentEffectiveStatement statement, final AbstractCompositeGenerator<?, ?> parent) {
100 super(statement, parent);
104 final void pushToInference(final SchemaInferenceStack dataTree) {
105 dataTree.enterSchemaTree(statement().argument());
109 final AbstractQName localName() {
110 throw new UnsupportedOperationException();
114 ClassPlacement classPlacement() {
115 // if the target is a choice we are NOT creating an explicit augmentation, but we still need a phantom to
116 // reserve the appropriate package name
117 final AbstractCompositeGenerator<?, ?> target = targetGenerator();
118 return target instanceof ChoiceGenerator ? ClassPlacement.PHANTOM : super.classPlacement();
122 final Member createMember(final CollisionDomain domain) {
123 final AbstractQName explicitIdentifier = statement()
124 .findFirstEffectiveSubstatementArgument(AugmentIdentifierEffectiveStatement.class).orElse(null);
125 if (explicitIdentifier != null) {
126 return domain.addPrimary(this, new CamelCaseNamingStrategy(StatementNamespace.DEFAULT, explicitIdentifier));
129 final Member target = targetGenerator().getMember();
131 for (Generator gen : getParent()) {
135 if (gen instanceof AbstractAugmentGenerator
136 && target.equalRoot(((AbstractAugmentGenerator) gen).targetGenerator().getMember())) {
141 return domain.addSecondary(this, target, String.valueOf(offset), statement().argument());
145 final GeneratedType createTypeImpl(final TypeBuilderFactory builderFactory) {
146 final GeneratedTypeBuilder builder = builderFactory.newGeneratedTypeBuilder(typeName());
148 builder.addImplementsType(BindingTypes.augmentation(targetGenerator().getGeneratedType(builderFactory)));
149 addUsesInterfaces(builder, builderFactory);
150 addConcreteInterfaceMethods(builder);
152 addGetterMethods(builder, builderFactory);
153 annotateDeprecatedIfNecessary(builder);
155 return builder.build();
158 @NonNull List<CaseRuntimeType> augmentedCasesIn(final ChildLookup lookup, final ChoiceEffectiveStatement stmt) {
159 final var target = verifyNotNull(targetStatement);
160 if (!stmt.equals(target)) {
164 final var result = createBuilder(effectiveStatement(statement(), target))
165 .fillTypes(ChildLookup.of(target), this)
167 internalRuntimeType = Optional.empty();
171 @Nullable AugmentRuntimeType runtimeTypeIn(final ChildLookup lookup, final EffectiveStatement<?, ?> stmt) {
172 final var target = verifyNotNull(targetStatement);
173 if (!stmt.equals(target)) {
176 if (internalRuntimeType != null) {
177 return internalRuntimeType.orElseThrow();
180 final var result = verifyNotNull(createInternalRuntimeType(ChildLookup.of(target),
181 effectiveStatement(statement(), target)));
182 internalRuntimeType = Optional.of(result);
186 private static @NonNull AugmentEffectiveStatement effectiveStatement(final AugmentEffectiveStatement augment,
187 final SchemaTreeAwareEffectiveStatement<?, ?> target) {
188 final var stmts = augment.effectiveSubstatements();
189 final var builder = ImmutableList.<EffectiveStatement<?, ?>>builderWithExpectedSize(stmts.size());
190 for (var child : stmts) {
191 if (child instanceof SchemaTreeEffectiveStatement) {
192 final var qname = ((SchemaTreeEffectiveStatement<?>) child).getIdentifier();
193 // FIXME: orElseThrow()?
194 target.get(SchemaTreeNamespace.class, qname).ifPresent(builder::add);
199 return new TargetAugmentEffectiveStatement(augment, target, builder.build());
202 final @Nullable AugmentRuntimeType getInternalRuntimeType() {
203 return verifyNotNull(internalRuntimeType, "Internal runtime not resolved in %s", this).orElse(null);
207 final void addAsGetterMethod(final GeneratedTypeBuilderBase<?> builder, final TypeBuilderFactory builderFactory) {
208 // Augments are never added as getters, as they are handled via Augmentable mechanics
212 CompositeRuntimeTypeBuilder<AugmentEffectiveStatement, AugmentRuntimeType> createBuilder(
213 final AugmentEffectiveStatement statement) {
214 return new CompositeRuntimeTypeBuilder<>(statement) {
216 AugmentRuntimeType build(final GeneratedType type, final AugmentEffectiveStatement statement,
217 final List<RuntimeType> children, final List<AugmentRuntimeType> augments) {
218 // 'augment' cannot be targeted by augment
219 verify(augments.isEmpty(), "Unexpected augments %s", augments);
220 return new DefaultAugmentRuntimeType(type, statement, children);
225 final void setTargetGenerator(final AbstractCompositeGenerator<?, ?> targetGenerator) {
226 verify(targetGen == null, "Attempted to relink %s, already have target %s", this, targetGen);
227 targetGen = requireNonNull(targetGenerator);
230 final @NonNull AbstractCompositeGenerator<?, ?> targetGenerator() {
231 return verifyNotNull(targetGen, "No target for %s", this);
234 final void setTargetStatement(final EffectiveStatement<?, ?> targetStatement) {
235 verify(targetStatement instanceof SchemaTreeAwareEffectiveStatement, "Unexpected target statement %s",
237 this.targetStatement = (SchemaTreeAwareEffectiveStatement<?, ?>) targetStatement;