2 * Copyright (c) 2015 Cisco Systems, Inc. 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.spi.meta;
10 import static com.google.common.base.Verify.verifyNotNull;
12 import com.google.common.annotations.Beta;
13 import com.google.common.base.VerifyException;
14 import com.google.common.collect.Iterables;
15 import com.google.common.collect.Streams;
16 import java.util.Collection;
18 import java.util.Optional;
19 import java.util.stream.Stream;
20 import org.eclipse.jdt.annotation.NonNull;
21 import org.eclipse.jdt.annotation.Nullable;
22 import org.opendaylight.yangtools.yang.common.QNameModule;
23 import org.opendaylight.yangtools.yang.common.YangVersion;
24 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
25 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
26 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
27 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
28 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
29 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
30 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
31 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
34 * An inference context associated with an instance of a statement.
36 * @param <A> Argument type
37 * @param <D> Declared Statement representation
38 * @param <E> Effective Statement representation
40 public interface StmtContext<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>> {
42 * Returns the origin of the statement.
44 * @return origin of statement
46 @NonNull StatementSource getStatementSource();
49 * Returns a reference to statement source.
51 * @return reference of statement source
53 @NonNull StatementSourceReference getStatementSourceReference();
56 * See {@link StatementSupport#getPublicView()}.
58 @NonNull StatementDefinition getPublicDefinition();
61 * Return the parent statement context, or null if this is the root statement.
63 * @return context of parent of statement, or null if this is the root statement.
65 @Nullable StmtContext<?, ?, ?> getParentContext();
68 * Return the parent statement context, forcing a VerifyException if this is the root statement.
70 * @return context of parent of statement
71 * @throws VerifyException if this statement is the root statement
73 default @NonNull StmtContext<?, ?, ?> coerceParentContext() {
74 return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
78 * Return the statement argument in literal format.
80 * @return raw statement argument string, or null if this statement does not have an argument.
82 @Nullable String rawStatementArgument();
85 * Return the statement argument in literal format.
87 * @return raw statement argument string
88 * @throws VerifyException if this statement does not have an argument
90 default @NonNull String coerceRawStatementArgument() {
91 return verifyNotNull(rawStatementArgument(), "Statement context %s does not have an argument", this);
95 * Return the statement argument.
97 * @return statement argument, or null if this statement does not have an argument
99 @Nullable A getStatementArgument();
102 * Return the statement argument in literal format.
104 * @return raw statement argument string
105 * @throws VerifyException if this statement does not have an argument
107 default @NonNull A coerceStatementArgument() {
108 return verifyNotNull(getStatementArgument(), "Statement context %s does not have an argument", this);
112 * Return the {@link SchemaPath} of this statement. Not all statements have a SchemaPath, in which case
113 * {@link Optional#empty()} is returned.
115 * @return Optional SchemaPath
117 @NonNull Optional<SchemaPath> getSchemaPath();
119 boolean isConfiguration();
121 boolean isEnabledSemanticVersioning();
124 * Return a value associated with specified key within a namespace.
126 * @param type Namespace type
128 * @param <K> namespace key type
129 * @param <V> namespace value type
130 * @param <N> namespace type
131 * @param <T> key type
132 * @return Value, or null if there is no element
133 * @throws NamespaceNotAvailableException when the namespace is not available.
135 @NonNull <K, V, T extends K, N extends IdentifierNamespace<K, V>> V getFromNamespace(Class<N> type, T key);
137 <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromNamespace(Class<N> type);
139 <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromCurrentStmtCtxNamespace(Class<N> type);
141 @NonNull StmtContext<?, ?, ?> getRoot();
144 * Return declared substatements. These are the statements which are explicitly written in the source model.
146 * @return Collection of declared substatements
148 @NonNull Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements();
151 * Return effective substatements. These are the statements which are added as this statement's substatements
152 * complete their effective model phase.
154 * @return Collection of declared substatements
156 @NonNull Collection<? extends StmtContext<?, ?, ?>> effectiveSubstatements();
158 default Iterable<? extends StmtContext<?, ?, ?>> allSubstatements() {
159 return Iterables.concat(declaredSubstatements(), effectiveSubstatements());
162 default Stream<? extends StmtContext<?, ?, ?>> allSubstatementsStream() {
163 return Streams.concat(declaredSubstatements().stream(), effectiveSubstatements().stream());
167 * Builds {@link DeclaredStatement} for statement context.
172 * Builds {@link EffectiveStatement} for statement context.
176 boolean isSupportedToBuildEffective();
178 boolean isSupportedByFeatures();
180 Collection<? extends StmtContext<?, ?, ?>> getEffectOfStatement();
183 * FIXME: YANGTOOLS-784: the next three methods are closely related to the copy process:
184 * - getCopyHistory() is a brief summary of what went on
185 * - getOriginalContext() points to the CopyHistory.ORIGINAL
186 * - getPreviousCopyCtx() points to the immediate predecessor forming a singly-linked list terminated
187 * at getOriginalContext()
189 * When implementing YANGTOOLS-784, this needs to be taken into account and properly forwarded through
190 * intermediate MutableTrees. Also note this closely relates to current namespace context, as taken into
191 * account when creating the argument. At least parts of this are only needed during buildEffective()
192 * and hence should become arguments to that method.
196 * Return the executive summary of the copy process that has produced this context.
198 * @return A simplified summary of the copy process.
200 CopyHistory getCopyHistory();
203 * Return the statement context of the original definition, if this statement is an instantiated copy.
205 * @return Original definition, if this statement was copied.
207 // FIXME: 5.0.0: this should return Optional<? extends StmtContext<A, D, E>>, is that feasible?
208 Optional<StmtContext<?, ?, ?>> getOriginalCtx();
211 * Return the context of the previous copy of this statement -- effectively walking towards the source origin
214 * @return Context of the previous copy of this statement, if this statement has been copied.
216 // FIXME: 5.0.0: this should return Optional<? extends StmtContext<A, D, E>>
217 Optional<? extends StmtContext<?, ?, ?>> getPreviousCopyCtx();
219 ModelProcessingPhase getCompletedPhase();
222 * Return version of root statement context.
224 * @return version of root statement context
226 @NonNull YangVersion getRootVersion();
229 * An mutable view of an inference context associated with an instance of a statement.
231 * @param <A> Argument type
232 * @param <D> Declared Statement representation
233 * @param <E> Effective Statement representation
235 interface Mutable<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
236 extends StmtContext<A, D, E> {
239 Mutable<?, ?, ?> getParentContext();
242 default Mutable<?, ?, ?> coerceParentContext() {
243 return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
247 * Associate a value with a key within a namespace.
249 * @param type Namespace type
252 * @param <K> namespace key type
253 * @param <V> namespace value type
254 * @param <N> namespace type
255 * @param <T> key type
256 * @param <U> value type
257 * @throws NamespaceNotAvailableException when the namespace is not available.
259 <K, V, T extends K, U extends V, N extends IdentifierNamespace<K, V>> void addToNs(Class<N> type, T key,
263 Mutable<?, ?, ?> getRoot();
266 * Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
267 * child and recording copy type. Resulting object may only be added as a child of this statement.
269 * @param stmt Statement to be used as a template
270 * @param type Type of copy to record in history
271 * @param targetModule Optional new target module
272 * @return copy of statement considering {@link CopyType} (augment, uses)
274 * @throws IllegalArgumentException if stmt cannot be copied into this statement, for example because it comes
275 * from an alien implementation.
276 * @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
278 // FIXME: 5.0.0: remove generic arguments X, Y, Z. Callers should not care, as the returned copy can actually
279 // be an encapsulating implicit statement.
280 <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> Mutable<X, Y, Z> childCopyOf(
281 StmtContext<X, Y, Z> stmt, CopyType type, @Nullable QNameModule targetModule);
284 * Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
285 * child and recording copy type. Resulting object may only be added as a child of this statement.
287 * @param stmt Statement to be used as a template
288 * @param type Type of copy to record in history
289 * @return copy of statement considering {@link CopyType} (augment, uses)
291 * @throws IllegalArgumentException if stmt cannot be copied into this statement, for example because it comes
292 * from an alien implementation.
293 * @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
295 default <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> Mutable<X, Y, Z> childCopyOf(
296 final StmtContext<X, Y, Z> stmt, final CopyType type) {
297 return childCopyOf(stmt, type, null);
301 @NonNull Optional<? extends Mutable<?, ?, ?>> copyAsChildOf(Mutable<?, ?, ?> parent, CopyType type,
302 @Nullable QNameModule targetModule);
305 default Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements() {
306 return mutableDeclaredSubstatements();
309 @NonNull Collection<? extends Mutable<?, ?, ?>> mutableDeclaredSubstatements();
312 default Collection<? extends StmtContext<?, ?, ?>> effectiveSubstatements() {
313 return mutableEffectiveSubstatements();
316 @NonNull Collection<? extends Mutable<?, ?, ?>> mutableEffectiveSubstatements();
319 * Create a new inference action to be executed during specified phase. The action cannot be cancelled
320 * and will be executed even if its definition remains incomplete. The specified phase cannot complete until
321 * this action is resolved. If the action cannot be resolved, model processing will fail.
323 * @param phase Target phase in which the action will resolved.
324 * @return A new action builder.
325 * @throws NullPointerException if the specified phase is null
327 @NonNull ModelActionBuilder newInferenceAction(@NonNull ModelProcessingPhase phase);
330 * Adds s statement to namespace map with a key.
333 * {@link StatementNamespace} child that determines namespace to be added to
335 * of type according to namespace class specification
337 * to be added to namespace map
339 <K, KT extends K, N extends StatementNamespace<K, ?, ?>> void addContext(Class<N> namespace, KT key,
340 StmtContext<?, ?, ?> stmt);
343 * Set version of root statement context.
346 * of root statement context
348 void setRootVersion(YangVersion version);
351 * Add mutable statement to seal. Each mutable statement must be sealed
352 * as the last step of statement parser processing.
354 * @param mutableStatement
355 * mutable statement which should be sealed
357 void addMutableStmtToSeal(MutableStatement mutableStatement);
360 * Add required module. Based on these dependencies are collected required sources from library sources.
363 * SourceIdentifier of module required by current root
367 * FIXME: this method is used solely during SOURCE_PRE_LINKAGE reactor phase and does not have a corresponding
368 * getter -- which makes it rather strange. At some point this method needs to be deprecated and its
369 * users migrated to use proper global namespace.
371 void addRequiredSource(SourceIdentifier dependency);
373 void addAsEffectOfStatement(StmtContext<?, ?, ?> ctx);
375 void addAsEffectOfStatement(Collection<? extends StmtContext<?, ?, ?>> ctxs);
378 * Set identifier of current root context.
381 * of current root context, must not be null
383 void setRootIdentifier(SourceIdentifier identifier);
385 void setIsSupportedToBuildEffective(boolean isSupportedToBuild);
387 // FIXME: this seems to be unused, but looks useful.
388 void setCompletedPhase(ModelProcessingPhase completedPhase);