2 * Copyright (c) 2020 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.yangtools.yang.parser.rfc7950.stmt;
10 import static com.google.common.base.Verify.verify;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.annotations.Beta;
14 import com.google.common.collect.ImmutableList;
15 import com.google.common.collect.ImmutableMap;
16 import java.util.HashMap;
18 import java.util.Optional;
19 import org.eclipse.jdt.annotation.NonNull;
20 import org.eclipse.jdt.annotation.Nullable;
21 import org.opendaylight.yangtools.yang.common.QName;
22 import org.opendaylight.yangtools.yang.model.api.DataNodeContainer;
23 import org.opendaylight.yangtools.yang.model.api.DataSchemaNode;
24 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
25 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
26 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
27 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
28 import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeAwareEffectiveStatement;
29 import org.opendaylight.yangtools.yang.model.api.stmt.DataTreeEffectiveStatement;
30 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeAwareEffectiveStatement;
31 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeEffectiveStatement;
32 import org.opendaylight.yangtools.yang.model.spi.meta.AbstractEffectiveStatement;
33 import org.opendaylight.yangtools.yang.model.spi.meta.SubstatementIndexingException;
34 import org.opendaylight.yangtools.yang.parser.rfc7950.stmt.EffectiveStatementMixins.DataNodeContainerMixin;
37 * Base stateless superclass for statements which (logically) always have an associated {@link DeclaredStatement}. This
38 * is notably not true for all {@code case} statements, some of which may actually be implied.
41 * Note implementations are not strictly required to make the declared statement available, they are free to throw
42 * {@link UnsupportedOperationException} from {@link #getDeclared()}, rendering any services relying on declared
43 * statement to be not available.
45 * @param <A> Argument type ({@link Void} if statement does not have argument.)
46 * @param <D> Class representing declared version of this statement.
49 public abstract class AbstractDeclaredEffectiveStatement<A, D extends DeclaredStatement<A>>
50 extends AbstractEffectiveStatement<A, D> {
52 public final StatementSource getStatementSource() {
53 return StatementSource.DECLARATION;
57 public abstract @NonNull D getDeclared();
60 * Base stateless superclass form {@link SchemaTreeAwareEffectiveStatement}s. It maintains the contents of schema
61 * tree namespace based of effective substatements.
63 * @param <A> Argument type ({@link Void} if statement does not have argument.)
64 * @param <D> Class representing declared version of this statement.
65 * @param <E> Class representing effective version of this statement.
67 public abstract static class WithSchemaTree<A, D extends DeclaredStatement<A>,
68 E extends SchemaTreeAwareEffectiveStatement<A, D>> extends AbstractDeclaredEffectiveStatement<A, D> {
70 @SuppressWarnings("unchecked")
71 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
72 final Class<N> namespace) {
73 if (SchemaTreeAwareEffectiveStatement.Namespace.class.equals(namespace)) {
74 return Optional.of((Map<K, V>) schemaTreeNamespace());
76 return super.getNamespaceContents(namespace);
80 * Indexing support for {@link DataNodeContainer#dataChildByName(QName)}.
82 protected final @Nullable DataSchemaNode dataSchemaNode(final QName name) {
83 // Only DataNodeContainer subclasses should be calling this method
84 verify(this instanceof DataNodeContainer);
85 final SchemaTreeEffectiveStatement<?> child = schemaTreeNamespace().get(requireNonNull(name));
86 return child instanceof DataSchemaNode ? (DataSchemaNode) child : null;
89 protected abstract Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace();
93 * Base stateless superclass form {@link DataTreeAwareEffectiveStatement}s. It maintains the contents of data tree
94 * namespace based of effective substatements.
96 * @param <A> Argument type ({@link Void} if statement does not have argument.)
97 * @param <D> Class representing declared version of this statement.
98 * @param <E> Class representing effective version of this statement.
100 public abstract static class WithDataTree<A, D extends DeclaredStatement<A>,
101 E extends DataTreeAwareEffectiveStatement<A, D>> extends WithSchemaTree<A, D, E> {
103 @SuppressWarnings("unchecked")
104 protected <K, V, N extends IdentifierNamespace<K, V>> Optional<? extends Map<K, V>> getNamespaceContents(
105 final Class<N> namespace) {
106 if (DataTreeAwareEffectiveStatement.Namespace.class.equals(namespace)) {
107 return Optional.of((Map<K, V>) dataTreeNamespace());
109 return super.getNamespaceContents(namespace);
112 protected abstract Map<QName, DataTreeEffectiveStatement<?>> dataTreeNamespace();
116 * A stateful version of {@link AbstractDeclaredEffectiveStatement}, which holds (and requires) a declared
119 * @param <A> Argument type ({@link Void} if statement does not have argument.)
120 * @param <D> Class representing declared version of this statement.
122 public abstract static class Default<A, D extends DeclaredStatement<A>>
123 extends AbstractDeclaredEffectiveStatement<A, D> {
124 private final @NonNull D declared;
126 protected Default(final D declared) {
127 this.declared = requireNonNull(declared);
130 protected Default(final Default<A, D> original) {
131 this.declared = original.declared;
135 public final D getDeclared() {
141 * Utility class for implementing DataNodeContainer-type statements.
143 public abstract static class DefaultDataNodeContainer<A, D extends DeclaredStatement<A>> extends Default<A, D>
144 implements DataNodeContainerMixin<A, D> {
145 private final @NonNull ImmutableMap<QName, DataSchemaNode> dataChildren;
146 private final @NonNull Object substatements;
148 protected DefaultDataNodeContainer(final D declared,
149 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
151 this.substatements = maskList(substatements);
153 // Note: we do not leak this map, so iteration order does not matter
154 final Map<QName, DataSchemaNode> tmp = new HashMap<>();
156 for (EffectiveStatement<?, ?> stmt : effectiveSubstatements()) {
157 if (stmt instanceof DataSchemaNode) {
158 final DataSchemaNode node = (DataSchemaNode) stmt;
159 final QName id = node.getQName();
160 final DataSchemaNode prev = tmp.put(id, node);
162 throw new SubstatementIndexingException(
163 "Cannot add child with name " + id + ", a conflicting child already exists");
168 dataChildren = ImmutableMap.copyOf(tmp);
172 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
173 return unmaskList(substatements);
177 public final DataSchemaNode dataChildByName(final QName name) {
178 return dataChildren.get(requireNonNull(name));
183 * An extra building block on top of {@link Default}, which is wiring {@link #argument()} to the declared statement.
184 * This is mostly useful for arguments that are not subject to inference transformation -- for example Strings in
185 * {@code description}, etc. This explicitly is not true of statements which underwent namespace binding via
186 * {@code uses} or similar.
188 * @param <A> Argument type ({@link Void} if statement does not have argument.)
189 * @param <D> Class representing declared version of this statement.
191 public abstract static class DefaultArgument<A, D extends DeclaredStatement<A>> extends Default<A, D> {
192 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>>
193 extends DefaultArgument<A, D> {
194 private final @NonNull Object substatements;
196 protected WithSubstatements(final D declared,
197 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
199 this.substatements = maskList(substatements);
202 protected WithSubstatements(final WithSubstatements<A, D> original) {
204 this.substatements = original.substatements;
208 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
209 return unmaskList(substatements);
213 protected DefaultArgument(final D declared) {
217 protected DefaultArgument(final DefaultArgument<A, D> original) {
222 public final A argument() {
223 return getDeclared().argument();
228 * A building block on top of {@link Default}, which adds an explicit argument value, which is not related to the
229 * context. This is mostly useful when the effective argument value reflects additional statements and similar.
231 * @param <A> Argument type ({@link Void} if statement does not have argument.)
232 * @param <D> Class representing declared version of this statement.
234 public abstract static class DefaultWithArgument<A, D extends DeclaredStatement<A>> extends Default<A, D> {
235 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>>
236 extends DefaultWithArgument<A, D> {
237 private final @NonNull Object substatements;
239 protected WithSubstatements(final D declared, final A argument,
240 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
241 super(declared, argument);
242 this.substatements = maskList(substatements);
246 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
247 return unmaskList(substatements);
251 private final A argument;
253 protected DefaultWithArgument(final D declared, final A argument) {
255 this.argument = argument;
259 public final A argument() {
265 * Stateful version of {@link WithSchemaTree}. Schema tree namespace is eagerly instantiated (and checked).
267 * @param <A> Argument type ({@link Void} if statement does not have argument.)
268 * @param <D> Class representing declared version of this statement.
269 * @param <E> Class representing effective version of this statement.
271 public abstract static class DefaultWithSchemaTree<A, D extends DeclaredStatement<A>,
272 E extends SchemaTreeAwareEffectiveStatement<A, D>> extends WithSchemaTree<A, D, E> {
273 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>,
274 E extends SchemaTreeAwareEffectiveStatement<A, D>> extends DefaultWithSchemaTree<A, D, E> {
275 private final @NonNull Object substatements;
277 protected WithSubstatements(final D declared,
278 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
279 super(declared, substatements);
280 this.substatements = maskList(substatements);
283 protected WithSubstatements(final WithSubstatements<A, D, E> original) {
285 this.substatements = original.substatements;
289 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
290 return unmaskList(substatements);
294 private final @NonNull ImmutableMap<QName, SchemaTreeEffectiveStatement<?>> schemaTree;
295 private final @NonNull D declared;
297 protected DefaultWithSchemaTree(final D declared,
298 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
299 this.declared = requireNonNull(declared);
300 this.schemaTree = ImmutableMap.copyOf(createSchemaTreeNamespace(substatements));
303 protected DefaultWithSchemaTree(final DefaultWithSchemaTree<A, D, E> original) {
304 this.declared = original.declared;
305 this.schemaTree = original.schemaTree;
309 public final D getDeclared() {
314 protected final Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace() {
320 * Stateful version of {@link WithDataTree}. Schema tree and data tree namespaces are eagerly instantiated
323 * @param <A> Argument type ({@link Void} if statement does not have argument.)
324 * @param <D> Class representing declared version of this statement.
325 * @param <E> Class representing effective version of this statement.
327 public abstract static class DefaultWithDataTree<A, D extends DeclaredStatement<A>,
328 E extends DataTreeAwareEffectiveStatement<A, D>> extends WithDataTree<A, D, E> {
329 public abstract static class WithSubstatements<A, D extends DeclaredStatement<A>,
330 E extends DataTreeAwareEffectiveStatement<A, D>> extends DefaultWithDataTree<A, D, E> {
331 private final @NonNull Object substatements;
333 protected WithSubstatements(final D declared,
334 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
335 super(declared, substatements);
336 this.substatements = maskList(substatements);
339 protected WithSubstatements(final WithSubstatements<A, D, E> original) {
341 this.substatements = original.substatements;
345 public final ImmutableList<? extends EffectiveStatement<?, ?>> effectiveSubstatements() {
346 return unmaskList(substatements);
350 private final @NonNull ImmutableMap<QName, SchemaTreeEffectiveStatement<?>> schemaTree;
351 private final @NonNull ImmutableMap<QName, DataTreeEffectiveStatement<?>> dataTree;
352 private final @NonNull D declared;
354 protected DefaultWithDataTree(final D declared,
355 final ImmutableList<? extends EffectiveStatement<?, ?>> substatements) {
356 this.declared = requireNonNull(declared);
357 final Map<QName, SchemaTreeEffectiveStatement<?>> schema = createSchemaTreeNamespace(substatements);
358 this.schemaTree = ImmutableMap.copyOf(schema);
359 this.dataTree = createDataTreeNamespace(schema.values(), schemaTree);
362 protected DefaultWithDataTree(final DefaultWithDataTree<A, D, E> original) {
363 this.declared = original.declared;
364 this.schemaTree = original.schemaTree;
365 this.dataTree = original.dataTree;
369 public final D getDeclared() {
374 protected final Map<QName, SchemaTreeEffectiveStatement<?>> schemaTreeNamespace() {
379 protected final Map<QName, DataTreeEffectiveStatement<?>> dataTreeNamespace() {