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
83 * @deprecated Use {@link #argument()} instead.
85 @Deprecated(forRemoval = true)
86 default @Nullable A getStatementArgument() {
91 * Return the statement argument in literal format.
93 * @return raw statement argument string
94 * @throws VerifyException if this statement does not have an argument
96 // TODO: gradually migrate callers of this method
97 default @NonNull A coerceStatementArgument() {
102 * Return the parent statement context, or null if this is the root statement.
104 * @return context of parent of statement, or null if this is the root statement.
106 @Nullable StmtContext<?, ?, ?> getParentContext();
109 * Return the parent statement context, forcing a VerifyException if this is the root statement.
111 * @return context of parent of statement
112 * @throws VerifyException if this statement is the root statement
114 default @NonNull StmtContext<?, ?, ?> coerceParentContext() {
115 return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
118 boolean isConfiguration();
120 boolean isEnabledSemanticVersioning();
123 * Return a value associated with specified key within a namespace.
125 * @param type Namespace type
127 * @param <K> namespace key type
128 * @param <V> namespace value type
129 * @param <N> namespace type
130 * @param <T> key type
131 * @return Value, or null if there is no element
132 * @throws NamespaceNotAvailableException when the namespace is not available.
134 <K, V, T extends K, N extends IdentifierNamespace<K, V>> @Nullable V getFromNamespace(Class<@NonNull N> type,
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 RootStmtContext<?, ?, ?> 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 Optional<StmtContext<A, D, E>> getOriginalCtx();
210 * Return the context of the previous copy of this statement -- effectively walking towards the source origin
213 * @return Context of the previous copy of this statement, if this statement has been copied.
215 Optional<StmtContext<A, D, E>> getPreviousCopyCtx();
217 ModelProcessingPhase getCompletedPhase();
220 * Return version of root statement context.
222 * @return version of root statement context
224 @NonNull YangVersion getRootVersion();
227 * An mutable view of an inference context associated with an instance of a statement.
229 * @param <A> Argument type
230 * @param <D> Declared Statement representation
231 * @param <E> Effective Statement representation
233 interface Mutable<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
234 extends StmtContext<A, D, E> {
237 Mutable<?, ?, ?> getParentContext();
240 default Mutable<?, ?, ?> coerceParentContext() {
241 return verifyNotNull(getParentContext(), "Root context %s does not have a parent", this);
245 * Associate a value with a key within a namespace.
247 * @param type Namespace type
250 * @param <K> namespace key type
251 * @param <V> namespace value type
252 * @param <N> namespace type
253 * @param <T> key type
254 * @param <U> value type
255 * @throws NamespaceNotAvailableException when the namespace is not available.
257 <K, V, T extends K, U extends V, N extends IdentifierNamespace<K, V>> void addToNs(Class<@NonNull N> type,
261 RootStmtContext.Mutable<?, ?, ?> getRoot();
264 * Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
265 * child and recording copy type. Resulting object may only be added as a child of this statement.
267 * @param stmt Statement to be used as a template
268 * @param type Type of copy to record in history
269 * @param targetModule Optional new target module
270 * @return copy of statement considering {@link CopyType} (augment, uses)
272 * @throws IllegalArgumentException if stmt cannot be copied into this statement, for example because it comes
273 * from an alien implementation.
274 * @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
276 Mutable<?, ?, ?> childCopyOf(StmtContext<?, ?, ?> stmt, CopyType type, @Nullable QNameModule targetModule);
279 * Create a child sub-statement, which is a child of this statement, inheriting all attributes from specified
280 * child and recording copy type. Resulting object may only be added as a child of this statement.
282 * @param stmt Statement to be used as a template
283 * @param type Type of copy to record in history
284 * @return copy of statement considering {@link CopyType} (augment, uses)
286 * @throws IllegalArgumentException if stmt cannot be copied into this statement, for example because it comes
287 * from an alien implementation.
288 * @throws org.opendaylight.yangtools.yang.parser.spi.source.SourceException instance of SourceException
290 default Mutable<?, ?, ?> childCopyOf(final StmtContext<?, ?, ?> stmt, final CopyType type) {
291 return childCopyOf(stmt, type, null);
295 @NonNull Optional<? extends Mutable<?, ?, ?>> copyAsChildOf(Mutable<?, ?, ?> parent, CopyType type,
296 @Nullable QNameModule targetModule);
299 default Collection<? extends StmtContext<?, ?, ?>> declaredSubstatements() {
300 return mutableDeclaredSubstatements();
303 @NonNull Collection<? extends Mutable<?, ?, ?>> mutableDeclaredSubstatements();
306 default Collection<? extends StmtContext<?, ?, ?>> effectiveSubstatements() {
307 return mutableEffectiveSubstatements();
310 @NonNull Collection<? extends Mutable<?, ?, ?>> mutableEffectiveSubstatements();
313 * Create a new inference action to be executed during specified phase. The action cannot be cancelled
314 * and will be executed even if its definition remains incomplete. The specified phase cannot complete until
315 * this action is resolved. If the action cannot be resolved, model processing will fail.
317 * @param phase Target phase in which the action will resolved.
318 * @return A new action builder.
319 * @throws NullPointerException if the specified phase is null
321 @NonNull ModelActionBuilder newInferenceAction(@NonNull ModelProcessingPhase phase);
324 * Adds s statement to namespace map with a key.
327 * {@link StatementNamespace} child that determines namespace to be added to
329 * of type according to namespace class specification
331 * to be added to namespace map
333 <K, KT extends K, N extends StatementNamespace<K, ?, ?>> void addContext(Class<@NonNull N> namespace, KT key,
334 StmtContext<?, ?, ?> stmt);
337 * Set version of root statement context.
340 * of root statement context
342 void setRootVersion(YangVersion version);
345 * Add mutable statement to seal. Each mutable statement must be sealed
346 * as the last step of statement parser processing.
348 * @param mutableStatement
349 * mutable statement which should be sealed
351 void addMutableStmtToSeal(MutableStatement mutableStatement);
354 * Add required module. Based on these dependencies are collected required sources from library sources.
357 * SourceIdentifier of module required by current root
361 * FIXME: this method is used solely during SOURCE_PRE_LINKAGE reactor phase and does not have a corresponding
362 * getter -- which makes it rather strange. At some point this method needs to be deprecated and its
363 * users migrated to use proper global namespace.
365 void addRequiredSource(SourceIdentifier dependency);
367 void addAsEffectOfStatement(StmtContext<?, ?, ?> ctx);
369 void addAsEffectOfStatement(Collection<? extends StmtContext<?, ?, ?>> ctxs);
372 * Set identifier of current root context.
375 * of current root context, must not be null
377 void setRootIdentifier(SourceIdentifier identifier);
379 void setIsSupportedToBuildEffective(boolean isSupportedToBuild);
383 * Search of any child statement context of specified type and return its argument. If such a statement exists, it
384 * is assumed to have the right argument. Users should be careful to use this method for statements which have
385 * cardinality {@code 0..1}, otherwise this method can return any one of the statement's argument.
388 * The default implementation defers to
389 * {@link StmtContextDefaults#findSubstatementArgument(StmtContext, Class)}, subclasses are expected to provide
390 * optimized implementation if possible.
392 * @param <X> Substatement argument type
393 * @param <Z> Substatement effective statement representation
394 * @param type Effective statement representation being look up
395 * @return {@link Optional#empty()} if no statement exists, otherwise the argument value
397 default <X, Z extends EffectiveStatement<X, ?>> @NonNull Optional<X> findSubstatementArgument(
398 final @NonNull Class<Z> type) {
399 return StmtContextDefaults.findSubstatementArgument(this, type);
403 * Check if there is any child statement context of specified type.
406 * The default implementation defers to {@link StmtContextDefaults#hasSubstatement(StmtContext, Class)},
407 * subclasses are expected to provide optimized implementation if possible.
409 * @param type Effective statement representation being look up
410 * @return True if such a child statement exists, false otherwise
412 default boolean hasSubstatement(final @NonNull Class<? extends EffectiveStatement<?, ?>> type) {
413 return StmtContextDefaults.hasSubstatement(this, type);