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.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.StatementDefinition;
28 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
29 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
30 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
33 * An inference context associated with an instance of a statement.
35 * @param <A> Argument type
36 * @param <D> Declared Statement representation
37 * @param <E> Effective Statement representation
39 public interface StmtContext<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
40 extends BoundStmtCtx<A> {
41 @Deprecated(forRemoval = true)
42 default @NonNull StatementDefinition getPublicDefinition() {
43 return publicDefinition();
46 @Deprecated(forRemoval = true)
47 default @NonNull StatementSource getStatementSource() {
51 @Deprecated(forRemoval = true)
52 default @NonNull StatementSourceReference getStatementSourceReference() {
53 return sourceReference();
57 * Return the statement argument in literal format.
59 * @return raw statement argument string, or null if this statement does not have an argument.
60 * @deprecated Use {@link #rawArgument()} instead.
62 @Deprecated(forRemoval = true)
63 default @Nullable String rawStatementArgument() {
68 * Return the statement argument in literal format.
70 * @return raw statement argument string
71 * @throws VerifyException if this statement does not have an argument
72 * @deprecated Use {@link #getRawArgument()} instead.
74 @Deprecated(forRemoval = true)
75 default @NonNull String coerceRawStatementArgument() {
76 return getRawArgument();
80 * Return the statement argument.
82 * @return statement argument, or null if this statement does not have an argument
84 // TODO: gradually migrate callers of this method
85 default @Nullable A getStatementArgument() {
90 * Return the statement argument in literal format.
92 * @return raw statement argument string
93 * @throws VerifyException if this statement does not have an argument
95 // TODO: gradually migrate callers of this method
96 default @NonNull A coerceStatementArgument() {
101 * Return the parent statement context, or null if this is the root statement.
103 * @return context of parent of statement, or null if this is the root statement.
105 @Nullable StmtContext<?, ?, ?> getParentContext();
108 * Return the parent statement context, forcing a VerifyException if this is the root statement.
110 * @return context of parent of statement
111 * @throws VerifyException if this statement is the root statement
113 default @NonNull StmtContext<?, ?, ?> coerceParentContext() {
114 return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
117 boolean isConfiguration();
119 boolean isEnabledSemanticVersioning();
122 * Return a value associated with specified key within a namespace.
124 * @param type Namespace type
126 * @param <K> namespace key type
127 * @param <V> namespace value type
128 * @param <N> namespace type
129 * @param <T> key type
130 * @return Value, or null if there is no element
131 * @throws NamespaceNotAvailableException when the namespace is not available.
133 <K, V, T extends K, N extends IdentifierNamespace<K, V>> @Nullable V getFromNamespace(Class<@NonNull N> type,
136 <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromNamespace(Class<N> type);
138 <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromCurrentStmtCtxNamespace(Class<N> type);
140 @NonNull RootStmtContext<?, ?, ?> getRoot();
143 * Return declared substatements. These are the statements which are explicitly written in the source model.
145 * @return Collection of declared substatements
147 @NonNull Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements();
150 * Return effective substatements. These are the statements which are added as this statement's substatements
151 * complete their effective model phase.
153 * @return Collection of declared substatements
155 @NonNull Collection<? extends StmtContext<?, ?, ?>> effectiveSubstatements();
157 default Iterable<? extends StmtContext<?, ?, ?>> allSubstatements() {
158 return Iterables.concat(declaredSubstatements(), effectiveSubstatements());
161 default Stream<? extends StmtContext<?, ?, ?>> allSubstatementsStream() {
162 return Streams.concat(declaredSubstatements().stream(), effectiveSubstatements().stream());
166 * Builds {@link DeclaredStatement} for statement context.
171 * Builds {@link EffectiveStatement} for statement context.
175 boolean isSupportedToBuildEffective();
177 boolean isSupportedByFeatures();
179 Collection<? extends StmtContext<?, ?, ?>> getEffectOfStatement();
182 * FIXME: YANGTOOLS-784: the next three methods are closely related to the copy process:
183 * - getCopyHistory() is a brief summary of what went on
184 * - getOriginalContext() points to the CopyHistory.ORIGINAL
185 * - getPreviousCopyCtx() points to the immediate predecessor forming a singly-linked list terminated
186 * at getOriginalContext()
188 * When implementing YANGTOOLS-784, this needs to be taken into account and properly forwarded through
189 * intermediate MutableTrees. Also note this closely relates to current namespace context, as taken into
190 * account when creating the argument. At least parts of this are only needed during buildEffective()
191 * and hence should become arguments to that method.
195 * Return the executive summary of the copy process that has produced this context.
197 * @return A simplified summary of the copy process.
199 CopyHistory getCopyHistory();
202 * Return the statement context of the original definition, if this statement is an instantiated copy.
204 * @return Original definition, if this statement was copied.
206 Optional<StmtContext<A, D, E>> getOriginalCtx();
209 * Return the context of the previous copy of this statement -- effectively walking towards the source origin
212 * @return Context of the previous copy of this statement, if this statement has been copied.
214 Optional<StmtContext<A, D, E>> getPreviousCopyCtx();
216 ModelProcessingPhase getCompletedPhase();
219 * Return version of root statement context.
221 * @return version of root statement context
223 @NonNull YangVersion getRootVersion();
226 * An mutable view of an inference context associated with an instance of a statement.
228 * @param <A> Argument type
229 * @param <D> Declared Statement representation
230 * @param <E> Effective Statement representation
232 interface Mutable<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
233 extends StmtContext<A, D, E> {
236 Mutable<?, ?, ?> getParentContext();
239 default Mutable<?, ?, ?> coerceParentContext() {
240 return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
244 * Associate a value with a key within a namespace.
246 * @param type Namespace type
249 * @param <K> namespace key type
250 * @param <V> namespace value type
251 * @param <N> namespace type
252 * @param <T> key type
253 * @param <U> value type
254 * @throws NamespaceNotAvailableException when the namespace is not available.
256 <K, V, T extends K, U extends V, N extends IdentifierNamespace<K, V>> void addToNs(Class<@NonNull N> type,
260 RootStmtContext.Mutable<?, ?, ?> getRoot();
263 * Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
264 * child and recording copy type. Resulting object may only be added as a child of this statement.
266 * @param stmt Statement to be used as a template
267 * @param type Type of copy to record in history
268 * @param targetModule Optional new target module
269 * @return copy of statement considering {@link CopyType} (augment, uses)
271 * @throws IllegalArgumentException if stmt cannot be copied into this statement, for example because it comes
272 * from an alien implementation.
273 * @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
275 Mutable<?, ?, ?> childCopyOf(StmtContext<?, ?, ?> stmt, CopyType type, @Nullable QNameModule targetModule);
278 * Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
279 * child and recording copy type. Resulting object may only be added as a child of this statement.
281 * @param stmt Statement to be used as a template
282 * @param type Type of copy to record in history
283 * @return copy of statement considering {@link CopyType} (augment, uses)
285 * @throws IllegalArgumentException if stmt cannot be copied into this statement, for example because it comes
286 * from an alien implementation.
287 * @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
289 default Mutable<?, ?, ?> childCopyOf(final StmtContext<?, ?, ?> stmt, final CopyType type) {
290 return childCopyOf(stmt, type, null);
294 @NonNull Optional<? extends Mutable<?, ?, ?>> copyAsChildOf(Mutable<?, ?, ?> parent, CopyType type,
295 @Nullable QNameModule targetModule);
298 default Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements() {
299 return mutableDeclaredSubstatements();
302 @NonNull Collection<? extends Mutable<?, ?, ?>> mutableDeclaredSubstatements();
305 default Collection<? extends StmtContext<?, ?, ?>> effectiveSubstatements() {
306 return mutableEffectiveSubstatements();
309 @NonNull Collection<? extends Mutable<?, ?, ?>> mutableEffectiveSubstatements();
312 * Create a new inference action to be executed during specified phase. The action cannot be cancelled
313 * and will be executed even if its definition remains incomplete. The specified phase cannot complete until
314 * this action is resolved. If the action cannot be resolved, model processing will fail.
316 * @param phase Target phase in which the action will resolved.
317 * @return A new action builder.
318 * @throws NullPointerException if the specified phase is null
320 @NonNull ModelActionBuilder newInferenceAction(@NonNull ModelProcessingPhase phase);
323 * Adds s statement to namespace map with a key.
326 * {@link StatementNamespace} child that determines namespace to be added to
328 * of type according to namespace class specification
330 * to be added to namespace map
332 <K, KT extends K, N extends StatementNamespace<K, ?, ?>> void addContext(Class<@NonNull N> namespace, KT key,
333 StmtContext<?, ?, ?> stmt);
336 * Set version of root statement context.
339 * of root statement context
341 void setRootVersion(YangVersion version);
344 * Add mutable statement to seal. Each mutable statement must be sealed
345 * as the last step of statement parser processing.
347 * @param mutableStatement
348 * mutable statement which should be sealed
350 void addMutableStmtToSeal(MutableStatement mutableStatement);
353 * Add required module. Based on these dependencies are collected required sources from library sources.
356 * SourceIdentifier of module required by current root
360 * FIXME: this method is used solely during SOURCE_PRE_LINKAGE reactor phase and does not have a corresponding
361 * getter -- which makes it rather strange. At some point this method needs to be deprecated and its
362 * users migrated to use proper global namespace.
364 void addRequiredSource(SourceIdentifier dependency);
366 void addAsEffectOfStatement(StmtContext<?, ?, ?> ctx);
368 void addAsEffectOfStatement(Collection<? extends StmtContext<?, ?, ?>> ctxs);
371 * Set identifier of current root context.
374 * of current root context, must not be null
376 void setRootIdentifier(SourceIdentifier identifier);
378 void setIsSupportedToBuildEffective(boolean isSupportedToBuild);
382 * Search of any child statement context of specified type and return its argument. If such a statement exists, it
383 * is assumed to have the right argument. Users should be careful to use this method for statements which have
384 * cardinality {@code 0..1}, otherwise this method can return any one of the statement's argument.
387 * The default implementation defers to
388 * {@link StmtContextDefaults#findSubstatementArgument(StmtContext, Class)}, subclasses are expected to provide
389 * optimized implementation if possible.
391 * @param <X> Substatement argument type
392 * @param <Z> Substatement effective statement representation
393 * @param type Effective statement representation being look up
394 * @return {@link Optional#empty()} if no statement exists, otherwise the argument value
396 default <X, Z extends EffectiveStatement<X, ?>> @NonNull Optional<X> findSubstatementArgument(
397 final @NonNull Class<Z> type) {
398 return StmtContextDefaults.findSubstatementArgument(this, type);
402 * Check if there is any child statement context of specified type.
405 * The default implementation defers to {@link StmtContextDefaults#hasSubstatement(StmtContext, Class)},
406 * subclasses are expected to provide optimized implementation if possible.
408 * @param type Effective statement representation being look up
409 * @return True if such a child statement exists, false otherwise
411 default boolean hasSubstatement(final @NonNull Class<? extends EffectiveStatement<?, ?>> type) {
412 return StmtContextDefaults.hasSubstatement(this, type);