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.stmt.reactor;
10 import static com.google.common.base.Preconditions.checkArgument;
11 import static com.google.common.base.Preconditions.checkNotNull;
12 import static com.google.common.base.Preconditions.checkState;
13 import static com.google.common.base.Verify.verify;
14 import static java.util.Objects.requireNonNull;
16 import com.google.common.annotations.Beta;
17 import com.google.common.base.MoreObjects;
18 import com.google.common.base.MoreObjects.ToStringHelper;
19 import com.google.common.collect.ImmutableCollection;
20 import com.google.common.collect.ImmutableList;
21 import com.google.common.collect.ImmutableMultimap;
22 import com.google.common.collect.Multimap;
23 import com.google.common.collect.Multimaps;
24 import java.util.ArrayList;
25 import java.util.Collection;
26 import java.util.Collections;
27 import java.util.EnumMap;
28 import java.util.EventListener;
29 import java.util.Iterator;
30 import java.util.List;
32 import java.util.Map.Entry;
33 import java.util.Objects;
34 import java.util.Optional;
36 import org.eclipse.jdt.annotation.NonNull;
37 import org.eclipse.jdt.annotation.Nullable;
38 import org.opendaylight.yangtools.yang.common.QName;
39 import org.opendaylight.yangtools.yang.common.QNameModule;
40 import org.opendaylight.yangtools.yang.common.YangVersion;
41 import org.opendaylight.yangtools.yang.model.api.SchemaPath;
42 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
43 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
44 import org.opendaylight.yangtools.yang.model.api.meta.IdentifierNamespace;
45 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
46 import org.opendaylight.yangtools.yang.model.api.meta.StatementSource;
47 import org.opendaylight.yangtools.yang.model.api.stmt.AugmentStatement;
48 import org.opendaylight.yangtools.yang.model.api.stmt.ConfigStatement;
49 import org.opendaylight.yangtools.yang.model.api.stmt.DeviationStatement;
50 import org.opendaylight.yangtools.yang.model.api.stmt.RefineStatement;
51 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaNodeIdentifier;
52 import org.opendaylight.yangtools.yang.model.api.stmt.UsesStatement;
53 import org.opendaylight.yangtools.yang.model.repo.api.SourceIdentifier;
54 import org.opendaylight.yangtools.yang.parser.spi.meta.CopyHistory;
55 import org.opendaylight.yangtools.yang.parser.spi.meta.CopyType;
56 import org.opendaylight.yangtools.yang.parser.spi.meta.ImplicitParentAwareStatementSupport;
57 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
58 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelActionBuilder;
59 import org.opendaylight.yangtools.yang.parser.spi.meta.ModelProcessingPhase;
60 import org.opendaylight.yangtools.yang.parser.spi.meta.MutableStatement;
61 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour;
62 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.Registry;
63 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceKeyCriterion;
64 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceNotAvailableException;
65 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementNamespace;
66 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupport;
67 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
68 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext.Mutable;
69 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
70 import org.opendaylight.yangtools.yang.parser.spi.source.ImplicitSubstatement;
71 import org.opendaylight.yangtools.yang.parser.spi.source.SourceException;
72 import org.opendaylight.yangtools.yang.parser.spi.source.SupportedFeaturesNamespace;
73 import org.opendaylight.yangtools.yang.parser.spi.source.SupportedFeaturesNamespace.SupportedFeatures;
74 import org.opendaylight.yangtools.yang.parser.stmt.reactor.NamespaceBehaviourWithListeners.KeyedValueAddedListener;
75 import org.opendaylight.yangtools.yang.parser.stmt.reactor.NamespaceBehaviourWithListeners.PredicateValueAddedListener;
76 import org.slf4j.Logger;
77 import org.slf4j.LoggerFactory;
80 * Core reactor statement implementation of {@link Mutable}.
82 * @param <A> Argument type
83 * @param <D> Declared Statement representation
84 * @param <E> Effective Statement representation
86 public abstract class StatementContextBase<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
87 extends NamespaceStorageSupport implements Mutable<A, D, E> {
89 * Event listener when an item is added to model namespace.
91 interface OnNamespaceItemAdded extends EventListener {
93 * Invoked whenever a new item is added to a namespace.
95 void namespaceItemAdded(StatementContextBase<?, ?, ?> context, Class<?> namespace, Object key, Object value);
99 * Event listener when a parsing {@link ModelProcessingPhase} is completed.
101 interface OnPhaseFinished extends EventListener {
103 * Invoked whenever a processing phase has finished.
105 boolean phaseFinished(StatementContextBase<?, ?, ?> context, ModelProcessingPhase finishedPhase);
109 * Interface for all mutations within an {@link ModelActionBuilder.InferenceAction}.
111 interface ContextMutation {
113 boolean isFinished();
116 private static final Logger LOG = LoggerFactory.getLogger(StatementContextBase.class);
118 // Flag bit assignments
119 private static final int IS_SUPPORTED_BY_FEATURES = 0x01;
120 private static final int HAVE_SUPPORTED_BY_FEATURES = 0x02;
121 private static final int IS_IGNORE_IF_FEATURE = 0x04;
122 private static final int HAVE_IGNORE_IF_FEATURE = 0x08;
123 // Note: these four are related
124 private static final int IS_IGNORE_CONFIG = 0x10;
125 private static final int HAVE_IGNORE_CONFIG = 0x20;
126 private static final int IS_CONFIGURATION = 0x40;
127 private static final int HAVE_CONFIGURATION = 0x80;
129 // Have-and-set flag constants, also used as masks
130 private static final int SET_SUPPORTED_BY_FEATURES = HAVE_SUPPORTED_BY_FEATURES | IS_SUPPORTED_BY_FEATURES;
131 private static final int SET_CONFIGURATION = HAVE_CONFIGURATION | IS_CONFIGURATION;
132 // Note: implies SET_CONFIGURATION, allowing fewer bit operations to be performed
133 private static final int SET_IGNORE_CONFIG = HAVE_IGNORE_CONFIG | IS_IGNORE_CONFIG | SET_CONFIGURATION;
134 private static final int SET_IGNORE_IF_FEATURE = HAVE_IGNORE_IF_FEATURE | IS_IGNORE_IF_FEATURE;
136 private final CopyHistory copyHistory;
137 // Note: this field can strictly be derived in InferredStatementContext, but it forms the basis of many of our
138 // operations, hence we want to keep it close by.
139 private final @NonNull StatementDefinitionContext<A, D, E> definition;
141 private Multimap<ModelProcessingPhase, OnPhaseFinished> phaseListeners = ImmutableMultimap.of();
142 private Multimap<ModelProcessingPhase, ContextMutation> phaseMutation = ImmutableMultimap.of();
143 private List<Mutable<?, ?, ?>> effective = ImmutableList.of();
144 private List<StmtContext<?, ?, ?>> effectOfStatement = ImmutableList.of();
146 private @Nullable ModelProcessingPhase completedPhase;
147 private @Nullable D declaredInstance;
148 private @Nullable E effectiveInstance;
150 // Master flag controlling whether this context can yield an effective statement
151 // FIXME: investigate the mechanics that are being supported by this, as it would be beneficial if we can get rid
152 // of this flag -- eliminating the initial alignment shadow used by below gap-filler fields.
153 private boolean isSupportedToBuildEffective = true;
155 // Flag for use with AbstractResumedStatement. This is hiding in the alignment shadow created by above boolean
156 private boolean fullyDefined;
158 // Flags for use with SubstatementContext. These are hiding in the alignment shadow created by above boolean and
159 // hence improve memory layout.
162 // SchemaPath cache for use with SubstatementContext and InferredStatementContext. This hurts RootStatementContext
163 // a bit in terms of size -- but those are only a few and SchemaPath is on its way out anyway.
164 private volatile SchemaPath schemaPath;
166 StatementContextBase(final StatementContextBase<A, D, E> original) {
167 this.copyHistory = original.copyHistory;
168 this.definition = original.definition;
171 StatementContextBase(final StatementDefinitionContext<A, D, E> def) {
172 this.definition = requireNonNull(def);
173 this.copyHistory = CopyHistory.original();
176 StatementContextBase(final StatementDefinitionContext<A, D, E> def, final CopyHistory copyHistory) {
177 this.definition = requireNonNull(def);
178 this.copyHistory = requireNonNull(copyHistory);
182 public Collection<? extends StmtContext<?, ?, ?>> getEffectOfStatement() {
183 return effectOfStatement;
187 public void addAsEffectOfStatement(final StmtContext<?, ?, ?> ctx) {
188 if (effectOfStatement.isEmpty()) {
189 effectOfStatement = new ArrayList<>(1);
191 effectOfStatement.add(ctx);
195 public void addAsEffectOfStatement(final Collection<? extends StmtContext<?, ?, ?>> ctxs) {
196 if (ctxs.isEmpty()) {
200 if (effectOfStatement.isEmpty()) {
201 effectOfStatement = new ArrayList<>(ctxs.size());
203 effectOfStatement.addAll(ctxs);
207 public boolean isSupportedByFeatures() {
208 final int fl = flags & SET_SUPPORTED_BY_FEATURES;
210 return fl == SET_SUPPORTED_BY_FEATURES;
212 if (isIgnoringIfFeatures()) {
213 flags |= SET_SUPPORTED_BY_FEATURES;
218 * If parent is supported, we need to check if-features statements of this context.
220 if (isParentSupportedByFeatures()) {
221 // If the set of supported features has not been provided, all features are supported by default.
222 final Set<QName> supportedFeatures = getFromNamespace(SupportedFeaturesNamespace.class,
223 SupportedFeatures.SUPPORTED_FEATURES);
224 if (supportedFeatures == null || StmtContextUtils.checkFeatureSupport(this, supportedFeatures)) {
225 flags |= SET_SUPPORTED_BY_FEATURES;
230 // Either parent is not supported or this statement is not supported
231 flags |= HAVE_SUPPORTED_BY_FEATURES;
235 protected abstract boolean isParentSupportedByFeatures();
238 public boolean isSupportedToBuildEffective() {
239 return isSupportedToBuildEffective;
243 public void setIsSupportedToBuildEffective(final boolean isSupportedToBuildEffective) {
244 this.isSupportedToBuildEffective = isSupportedToBuildEffective;
248 public CopyHistory getCopyHistory() {
253 public ModelProcessingPhase getCompletedPhase() {
254 return completedPhase;
258 public void setCompletedPhase(final ModelProcessingPhase completedPhase) {
259 this.completedPhase = completedPhase;
263 public abstract StatementContextBase<?, ?, ?> getParentContext();
266 * Returns the model root for this statement.
268 * @return root context of statement
271 public abstract RootStatementContext<?, ?, ?> getRoot();
274 public final @NonNull Registry getBehaviourRegistry() {
275 return getRoot().getBehaviourRegistryImpl();
279 public final YangVersion getRootVersion() {
280 return getRoot().getRootVersionImpl();
284 public final void setRootVersion(final YangVersion version) {
285 getRoot().setRootVersionImpl(version);
289 public final void addMutableStmtToSeal(final MutableStatement mutableStatement) {
290 getRoot().addMutableStmtToSealImpl(mutableStatement);
294 public final void addRequiredSource(final SourceIdentifier dependency) {
295 getRoot().addRequiredSourceImpl(dependency);
299 public final void setRootIdentifier(final SourceIdentifier identifier) {
300 getRoot().setRootIdentifierImpl(identifier);
304 public final boolean isEnabledSemanticVersioning() {
305 return getRoot().isEnabledSemanticVersioningImpl();
309 public StatementSource getStatementSource() {
310 return getStatementSourceReference().getStatementSource();
314 public final <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromCurrentStmtCtxNamespace(
315 final Class<N> type) {
316 return getLocalNamespace(type);
320 public final <K, V, N extends IdentifierNamespace<K, V>> Map<K, V> getAllFromNamespace(final Class<N> type) {
321 return getNamespace(type);
325 * Associate a value with a key within a namespace.
327 * @param type Namespace type
330 * @param <K> namespace key type
331 * @param <V> namespace value type
332 * @param <N> namespace type
333 * @param <T> key type
334 * @param <U> value type
335 * @throws NamespaceNotAvailableException when the namespace is not available.
338 public final <K, V, T extends K, U extends V, N extends IdentifierNamespace<K, V>> void addToNs(
339 final Class<N> type, final T key, final U value) {
340 addToNamespace(type, key, value);
344 public abstract Collection<? extends StatementContextBase<?, ?, ?>> mutableDeclaredSubstatements();
347 * Return a value associated with specified key within a namespace.
349 * @param type Namespace type
351 * @param <K> namespace key type
352 * @param <V> namespace value type
353 * @param <N> namespace type
354 * @param <T> key type
355 * @return Value, or null if there is no element
356 * @throws NamespaceNotAvailableException when the namespace is not available.
359 public final <K, V, T extends K, N extends IdentifierNamespace<K, V>> V getFromNamespace(final Class<N> type,
361 return getBehaviourRegistry().getNamespaceBehaviour(type).getFrom(this, key);
365 public Collection<? extends Mutable<?, ?, ?>> mutableEffectiveSubstatements() {
366 if (effective instanceof ImmutableCollection) {
370 return Collections.unmodifiableCollection(effective);
373 private void shrinkEffective() {
374 if (effective.isEmpty()) {
375 effective = ImmutableList.of();
379 public void removeStatementFromEffectiveSubstatements(final StatementDefinition statementDef) {
380 if (effective.isEmpty()) {
384 final Iterator<? extends StmtContext<?, ?, ?>> iterator = effective.iterator();
385 while (iterator.hasNext()) {
386 final StmtContext<?, ?, ?> next = iterator.next();
387 if (statementDef.equals(next.getPublicDefinition())) {
396 * Removes a statement context from the effective substatements based on its statement definition (i.e statement
397 * keyword) and raw (in String form) statement argument. The statement context is removed only if both statement
398 * definition and statement argument match with one of the effective substatements' statement definition
402 * If the statementArg parameter is null, the statement context is removed based only on its statement definition.
404 * @param statementDef statement definition of the statement context to remove
405 * @param statementArg statement argument of the statement context to remove
407 public void removeStatementFromEffectiveSubstatements(final StatementDefinition statementDef,
408 final String statementArg) {
409 if (statementArg == null) {
410 removeStatementFromEffectiveSubstatements(statementDef);
413 if (effective.isEmpty()) {
417 final Iterator<Mutable<?, ?, ?>> iterator = effective.iterator();
418 while (iterator.hasNext()) {
419 final Mutable<?, ?, ?> next = iterator.next();
420 if (statementDef.equals(next.getPublicDefinition()) && statementArg.equals(next.rawStatementArgument())) {
428 // YANG example: RPC/action statements always have 'input' and 'output' defined
430 public <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> @NonNull Mutable<X, Y, Z>
431 appendImplicitSubstatement(final StatementSupport<X, Y, Z> support, final String rawArg) {
432 // FIXME: YANGTOOLS-652: This does not need to be a SubstatementContext, in can be a specialized
433 // StatementContextBase subclass.
434 final Mutable<X, Y, Z> ret = new SubstatementContext<>(this, new StatementDefinitionContext<>(support),
435 ImplicitSubstatement.of(getStatementSourceReference()), rawArg);
436 support.onStatementAdded(ret);
437 addEffectiveSubstatement(ret);
442 * Adds an effective statement to collection of substatements.
444 * @param substatement substatement
445 * @throws IllegalStateException
446 * if added in declared phase
447 * @throws NullPointerException
448 * if statement parameter is null
450 public void addEffectiveSubstatement(final Mutable<?, ?, ?> substatement) {
451 beforeAddEffectiveStatement(1);
452 effective.add(substatement);
456 * Adds an effective statement to collection of substatements.
458 * @param statements substatements
459 * @throws IllegalStateException
460 * if added in declared phase
461 * @throws NullPointerException
462 * if statement parameter is null
464 public void addEffectiveSubstatements(final Collection<? extends Mutable<?, ?, ?>> statements) {
465 if (statements.isEmpty()) {
469 statements.forEach(Objects::requireNonNull);
470 beforeAddEffectiveStatement(statements.size());
471 effective.addAll(statements);
474 private void beforeAddEffectiveStatement(final int toAdd) {
475 final ModelProcessingPhase inProgressPhase = getRoot().getSourceContext().getInProgressPhase();
476 checkState(inProgressPhase == ModelProcessingPhase.FULL_DECLARATION
477 || inProgressPhase == ModelProcessingPhase.EFFECTIVE_MODEL,
478 "Effective statement cannot be added in declared phase at: %s", getStatementSourceReference());
480 if (effective.isEmpty()) {
481 effective = new ArrayList<>(toAdd);
485 // Exists only due to memory optimization
486 final boolean fullyDefined() {
490 // Exists only due to memory optimization, should live in AbstractResumedStatement
491 final void setFullyDefined() {
496 public D buildDeclared() {
497 final D existing = declaredInstance;
498 if (existing != null) {
501 checkArgument(completedPhase == ModelProcessingPhase.FULL_DECLARATION
502 || completedPhase == ModelProcessingPhase.EFFECTIVE_MODEL);
503 return declaredInstance = definition.getFactory().createDeclared(this);
507 public E buildEffective() {
508 final E existing = effectiveInstance;
509 return existing != null ? existing : (effectiveInstance = definition.getFactory().createEffective(this));
513 * tries to execute current {@link ModelProcessingPhase} of source parsing.
516 * to be executed (completed)
517 * @return if phase was successfully completed
518 * @throws SourceException
519 * when an error occurred in source parsing
521 boolean tryToCompletePhase(final ModelProcessingPhase phase) {
523 boolean finished = true;
524 final Collection<ContextMutation> openMutations = phaseMutation.get(phase);
525 if (!openMutations.isEmpty()) {
526 final Iterator<ContextMutation> it = openMutations.iterator();
527 while (it.hasNext()) {
528 final ContextMutation current = it.next();
529 if (current.isFinished()) {
536 if (openMutations.isEmpty()) {
537 phaseMutation.removeAll(phase);
538 if (phaseMutation.isEmpty()) {
539 phaseMutation = ImmutableMultimap.of();
544 for (final StatementContextBase<?, ?, ?> child : mutableDeclaredSubstatements()) {
545 finished &= child.tryToCompletePhase(phase);
547 for (final Mutable<?, ?, ?> child : effective) {
548 if (child instanceof StatementContextBase) {
549 finished &= ((StatementContextBase<?, ?, ?>) child).tryToCompletePhase(phase);
554 onPhaseCompleted(phase);
561 * Occurs on end of {@link ModelProcessingPhase} of source parsing.
564 * that was to be completed (finished)
565 * @throws SourceException
566 * when an error occurred in source parsing
568 private void onPhaseCompleted(final ModelProcessingPhase phase) {
569 completedPhase = phase;
571 final Collection<OnPhaseFinished> listeners = phaseListeners.get(phase);
572 if (listeners.isEmpty()) {
576 final Iterator<OnPhaseFinished> listener = listeners.iterator();
577 while (listener.hasNext()) {
578 final OnPhaseFinished next = listener.next();
579 if (next.phaseFinished(this, phase)) {
584 if (listeners.isEmpty()) {
585 phaseListeners.removeAll(phase);
586 if (phaseListeners.isEmpty()) {
587 phaseListeners = ImmutableMultimap.of();
593 * Ends declared section of current node.
595 void endDeclared(final ModelProcessingPhase phase) {
596 definition.onDeclarationFinished(this, phase);
600 * Return the context in which this statement was defined.
602 * @return statement definition
604 protected final @NonNull StatementDefinitionContext<A, D, E> definition() {
609 protected void checkLocalNamespaceAllowed(final Class<? extends IdentifierNamespace<?, ?>> type) {
610 definition.checkNamespaceAllowed(type);
614 protected <K, V, N extends IdentifierNamespace<K, V>> void onNamespaceElementAdded(final Class<N> type, final K key,
616 // definition().onNamespaceElementAdded(this, type, key, value);
619 final <K, V, N extends IdentifierNamespace<K, V>> void onNamespaceItemAddedAction(final Class<N> type, final K key,
620 final OnNamespaceItemAdded listener) {
621 final Object potential = getFromNamespace(type, key);
622 if (potential != null) {
623 LOG.trace("Listener on {} key {} satisfied immediately", type, key);
624 listener.namespaceItemAdded(this, type, key, potential);
628 getBehaviour(type).addListener(new KeyedValueAddedListener<>(this, key) {
630 void onValueAdded(final Object value) {
631 listener.namespaceItemAdded(StatementContextBase.this, type, key, value);
636 final <K, V, N extends IdentifierNamespace<K, V>> void onNamespaceItemAddedAction(final Class<N> type,
637 final ModelProcessingPhase phase, final NamespaceKeyCriterion<K> criterion,
638 final OnNamespaceItemAdded listener) {
639 final Optional<Entry<K, V>> existing = getFromNamespace(type, criterion);
640 if (existing.isPresent()) {
641 final Entry<K, V> entry = existing.get();
642 LOG.debug("Listener on {} criterion {} found a pre-existing match: {}", type, criterion, entry);
643 waitForPhase(entry.getValue(), type, phase, criterion, listener);
647 final NamespaceBehaviourWithListeners<K, V, N> behaviour = getBehaviour(type);
648 behaviour.addListener(new PredicateValueAddedListener<K, V>(this) {
650 boolean onValueAdded(final K key, final V value) {
651 if (criterion.match(key)) {
652 LOG.debug("Listener on {} criterion {} matched added key {}", type, criterion, key);
653 waitForPhase(value, type, phase, criterion, listener);
662 final <K, V, N extends IdentifierNamespace<K, V>> void selectMatch(final Class<N> type,
663 final NamespaceKeyCriterion<K> criterion, final OnNamespaceItemAdded listener) {
664 final Optional<Entry<K, V>> optMatch = getFromNamespace(type, criterion);
665 checkState(optMatch.isPresent(), "Failed to find a match for criterion %s in namespace %s node %s", criterion,
667 final Entry<K, V> match = optMatch.get();
668 listener.namespaceItemAdded(StatementContextBase.this, type, match.getKey(), match.getValue());
671 final <K, V, N extends IdentifierNamespace<K, V>> void waitForPhase(final Object value, final Class<N> type,
672 final ModelProcessingPhase phase, final NamespaceKeyCriterion<K> criterion,
673 final OnNamespaceItemAdded listener) {
674 ((StatementContextBase<?, ? ,?>) value).addPhaseCompletedListener(phase,
675 (context, phaseCompleted) -> {
676 selectMatch(type, criterion, listener);
681 private <K, V, N extends IdentifierNamespace<K, V>> NamespaceBehaviourWithListeners<K, V, N> getBehaviour(
682 final Class<N> type) {
683 final NamespaceBehaviour<K, V, N> behaviour = getBehaviourRegistry().getNamespaceBehaviour(type);
684 checkArgument(behaviour instanceof NamespaceBehaviourWithListeners, "Namespace %s does not support listeners",
687 return (NamespaceBehaviourWithListeners<K, V, N>) behaviour;
691 public StatementDefinition getPublicDefinition() {
692 return definition.getPublicView();
696 public ModelActionBuilder newInferenceAction(final ModelProcessingPhase phase) {
697 return getRoot().getSourceContext().newInferenceAction(phase);
700 private static <T> Multimap<ModelProcessingPhase, T> newMultimap() {
701 return Multimaps.newListMultimap(new EnumMap<>(ModelProcessingPhase.class), () -> new ArrayList<>(1));
705 * Adds {@link OnPhaseFinished} listener for a {@link ModelProcessingPhase} end. If the base has already completed
706 * the listener is notified immediately.
708 * @param phase requested completion phase
709 * @param listener listener to invoke
710 * @throws NullPointerException if any of the arguments is null
712 void addPhaseCompletedListener(final ModelProcessingPhase phase, final OnPhaseFinished listener) {
713 checkNotNull(phase, "Statement context processing phase cannot be null at: %s", getStatementSourceReference());
714 checkNotNull(listener, "Statement context phase listener cannot be null at: %s", getStatementSourceReference());
716 ModelProcessingPhase finishedPhase = completedPhase;
717 while (finishedPhase != null) {
718 if (phase.equals(finishedPhase)) {
719 listener.phaseFinished(this, finishedPhase);
722 finishedPhase = finishedPhase.getPreviousPhase();
724 if (phaseListeners.isEmpty()) {
725 phaseListeners = newMultimap();
728 phaseListeners.put(phase, listener);
732 * Adds a {@link ContextMutation} to a {@link ModelProcessingPhase}.
734 * @throws IllegalStateException
735 * when the mutation was registered after phase was completed
737 void addMutation(final ModelProcessingPhase phase, final ContextMutation mutation) {
738 ModelProcessingPhase finishedPhase = completedPhase;
739 while (finishedPhase != null) {
740 checkState(!phase.equals(finishedPhase), "Mutation registered after phase was completed at: %s",
741 getStatementSourceReference());
742 finishedPhase = finishedPhase.getPreviousPhase();
745 if (phaseMutation.isEmpty()) {
746 phaseMutation = newMultimap();
748 phaseMutation.put(phase, mutation);
752 public <K, KT extends K, N extends StatementNamespace<K, ?, ?>> void addContext(final Class<N> namespace,
753 final KT key,final StmtContext<?, ?, ?> stmt) {
754 addContextToNamespace(namespace, key, stmt);
758 public final Mutable<?, ?, ?> childCopyOf(final StmtContext<?, ?, ?> stmt, final CopyType type,
759 final QNameModule targetModule) {
760 checkState(stmt.getCompletedPhase() == ModelProcessingPhase.EFFECTIVE_MODEL,
761 "Attempted to copy statement %s which has completed phase %s", stmt, stmt.getCompletedPhase());
762 checkArgument(stmt instanceof StatementContextBase, "Unsupported statement %s", stmt);
763 return childCopyOf((StatementContextBase<?, ?, ?>) stmt, type, targetModule);
766 private <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> Mutable<X, Y, Z> childCopyOf(
767 final StatementContextBase<X, Y, Z> original, final CopyType type, final QNameModule targetModule) {
768 final Optional<StatementSupport<?, ?, ?>> implicitParent = definition.getImplicitParentFor(
769 original.getPublicDefinition());
771 final StatementContextBase<X, Y, Z> result;
772 final InferredStatementContext<X, Y, Z> copy;
774 if (implicitParent.isPresent()) {
775 final StatementDefinitionContext<?, ?, ?> def = new StatementDefinitionContext<>(implicitParent.get());
776 result = new SubstatementContext(this, def, original.getStatementSourceReference(),
777 original.rawStatementArgument(), original.getStatementArgument(), type);
779 final CopyType childCopyType;
781 case ADDED_BY_AUGMENTATION:
782 childCopyType = CopyType.ORIGINAL;
784 case ADDED_BY_USES_AUGMENTATION:
785 childCopyType = CopyType.ADDED_BY_USES;
790 childCopyType = type;
793 copy = new InferredStatementContext<>(result, original, childCopyType, type, targetModule);
794 result.addEffectiveSubstatement(copy);
796 result = copy = new InferredStatementContext<>(this, original, type, type, targetModule);
799 original.definition.onStatementAdded(copy);
804 public final boolean hasImplicitParentSupport() {
805 return definition.getFactory() instanceof ImplicitParentAwareStatementSupport;
809 public final StatementContextBase<?, ?, ?> wrapWithImplicit(final StatementContextBase<?, ?, ?> original) {
810 final Optional<StatementSupport<?, ?, ?>> optImplicit = definition.getImplicitParentFor(
811 original.getPublicDefinition());
812 if (optImplicit.isEmpty()) {
816 final StatementDefinitionContext<?, ?, ?> def = new StatementDefinitionContext<>(optImplicit.get());
817 final CopyType type = original.getCopyHistory().getLastOperation();
818 final SubstatementContext<?, ?, ?> result = new SubstatementContext(original.getParentContext(), def,
819 original.getStatementSourceReference(), original.rawStatementArgument(), original.getStatementArgument(),
822 result.addEffectiveSubstatement(original.reparent(result));
823 result.setCompletedPhase(original.getCompletedPhase());
827 abstract StatementContextBase<A, D, E> reparent(StatementContextBase<?, ?, ?> newParent);
830 * Config statements are not all that common which means we are performing a recursive search towards the root
831 * every time {@link #isConfiguration()} is invoked. This is quite expensive because it causes a linear search
832 * for the (usually non-existent) config statement.
835 * This method maintains a resolution cache, so once we have returned a result, we will keep on returning the same
836 * result without performing any lookups, solely to support {@link SubstatementContext#isConfiguration()}.
839 * Note: use of this method implies that {@link #isIgnoringConfig()} is realized with
840 * {@link #isIgnoringConfig(StatementContextBase)}.
842 final boolean isConfiguration(final StatementContextBase<?, ?, ?> parent) {
843 final int fl = flags & SET_CONFIGURATION;
845 return fl == SET_CONFIGURATION;
847 if (isIgnoringConfig(parent)) {
848 // Note: SET_CONFIGURATION has been stored in flags
852 final StmtContext<Boolean, ?, ?> configStatement = StmtContextUtils.findFirstSubstatement(this,
853 ConfigStatement.class);
854 final boolean isConfig;
855 if (configStatement != null) {
856 isConfig = configStatement.coerceStatementArgument();
858 // Validity check: if parent is config=false this cannot be a config=true
859 InferenceException.throwIf(!parent.isConfiguration(), getStatementSourceReference(),
860 "Parent node has config=false, this node must not be specifed as config=true");
863 // If "config" statement is not specified, the default is the same as the parent's "config" value.
864 isConfig = parent.isConfiguration();
867 // Resolved, make sure we cache this return
868 flags |= isConfig ? SET_CONFIGURATION : HAVE_CONFIGURATION;
872 protected abstract boolean isIgnoringConfig();
875 * This method maintains a resolution cache for ignore config, so once we have returned a result, we will
876 * keep on returning the same result without performing any lookups. Exists only to support
877 * {@link SubstatementContext#isIgnoringConfig()}.
880 * Note: use of this method implies that {@link #isConfiguration()} is realized with
881 * {@link #isConfiguration(StatementContextBase)}.
883 final boolean isIgnoringConfig(final StatementContextBase<?, ?, ?> parent) {
884 final int fl = flags & SET_IGNORE_CONFIG;
886 return fl == SET_IGNORE_CONFIG;
888 if (definition.isIgnoringConfig() || parent.isIgnoringConfig()) {
889 flags |= SET_IGNORE_CONFIG;
893 flags |= HAVE_IGNORE_CONFIG;
897 protected abstract boolean isIgnoringIfFeatures();
900 * This method maintains a resolution cache for ignore if-feature, so once we have returned a result, we will
901 * keep on returning the same result without performing any lookups. Exists only to support
902 * {@link SubstatementContext#isIgnoringIfFeatures()}.
904 final boolean isIgnoringIfFeatures(final StatementContextBase<?, ?, ?> parent) {
905 final int fl = flags & SET_IGNORE_IF_FEATURE;
907 return fl == SET_IGNORE_IF_FEATURE;
909 if (definition.isIgnoringIfFeatures() || parent.isIgnoringIfFeatures()) {
910 flags |= SET_IGNORE_IF_FEATURE;
914 flags |= HAVE_IGNORE_IF_FEATURE;
918 // Exists only to support SubstatementContext/InferredStatementContext
919 final @NonNull Optional<SchemaPath> substatementGetSchemaPath() {
920 SchemaPath local = schemaPath;
922 synchronized (this) {
925 local = createSchemaPath(coerceParentContext());
931 return Optional.ofNullable(local);
934 private SchemaPath createSchemaPath(final Mutable<?, ?, ?> parent) {
935 final Optional<SchemaPath> maybeParentPath = parent.getSchemaPath();
936 verify(maybeParentPath.isPresent(), "Parent %s does not have a SchemaPath", parent);
937 final SchemaPath parentPath = maybeParentPath.get();
939 if (StmtContextUtils.isUnknownStatement(this)) {
940 return parentPath.createChild(getPublicDefinition().getStatementName());
942 final Object argument = getStatementArgument();
943 if (argument instanceof QName) {
944 final QName qname = (QName) argument;
945 if (StmtContextUtils.producesDeclared(this, UsesStatement.class)) {
946 return maybeParentPath.orElse(null);
949 return parentPath.createChild(qname);
951 if (argument instanceof String) {
952 // FIXME: This may yield illegal argument exceptions
953 final Optional<StmtContext<?, ?, ?>> originalCtx = getOriginalCtx();
954 final QName qname = StmtContextUtils.qnameFromArgument(originalCtx.orElse(this), (String) argument);
955 return parentPath.createChild(qname);
957 if (argument instanceof SchemaNodeIdentifier
958 && (StmtContextUtils.producesDeclared(this, AugmentStatement.class)
959 || StmtContextUtils.producesDeclared(this, RefineStatement.class)
960 || StmtContextUtils.producesDeclared(this, DeviationStatement.class))) {
962 return parentPath.createChild(((SchemaNodeIdentifier) argument).getPathFromRoot());
965 // FIXME: this does not look right
966 return maybeParentPath.orElse(null);
970 public final String toString() {
971 return addToStringAttributes(MoreObjects.toStringHelper(this).omitNullValues()).toString();
974 protected ToStringHelper addToStringAttributes(final ToStringHelper toStringHelper) {
975 return toStringHelper.add("definition", definition).add("rawArgument", rawStatementArgument());