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.stmt.reactor;
10 import static com.google.common.base.Verify.verify;
11 import static java.util.Objects.requireNonNull;
13 import com.google.common.base.VerifyException;
14 import com.google.common.collect.ImmutableList;
15 import com.google.common.collect.Maps;
16 import com.google.common.collect.Streams;
17 import java.util.ArrayList;
18 import java.util.Collection;
19 import java.util.Collections;
20 import java.util.HashMap;
21 import java.util.Iterator;
22 import java.util.List;
24 import java.util.Objects;
25 import java.util.Optional;
26 import java.util.stream.Collectors;
27 import java.util.stream.Stream;
28 import org.eclipse.jdt.annotation.NonNull;
29 import org.eclipse.jdt.annotation.Nullable;
30 import org.opendaylight.yangtools.concepts.Immutable;
31 import org.opendaylight.yangtools.yang.common.QName;
32 import org.opendaylight.yangtools.yang.common.QNameModule;
33 import org.opendaylight.yangtools.yang.model.api.meta.DeclaredStatement;
34 import org.opendaylight.yangtools.yang.model.api.meta.EffectiveStatement;
35 import org.opendaylight.yangtools.yang.model.api.meta.StatementDefinition;
36 import org.opendaylight.yangtools.yang.model.api.stmt.SchemaTreeEffectiveStatement;
37 import org.opendaylight.yangtools.yang.parser.spi.ParserNamespaces;
38 import org.opendaylight.yangtools.yang.parser.spi.meta.CopyType;
39 import org.opendaylight.yangtools.yang.parser.spi.meta.EffectiveStatementState;
40 import org.opendaylight.yangtools.yang.parser.spi.meta.InferenceException;
41 import org.opendaylight.yangtools.yang.parser.spi.meta.NamespaceBehaviour.OnDemandSchemaTreeStorageNode;
42 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementFactory;
43 import org.opendaylight.yangtools.yang.parser.spi.meta.StatementSupport;
44 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContext;
45 import org.opendaylight.yangtools.yang.parser.spi.meta.StmtContextUtils;
46 import org.opendaylight.yangtools.yang.parser.spi.source.StatementSourceReference;
47 import org.slf4j.Logger;
48 import org.slf4j.LoggerFactory;
51 * A statement which has been inferred to exist. Functionally it is equivalent to a SubstatementContext, but it is not
52 * backed by a declaration (and declared statements). It is backed by a prototype StatementContextBase and has only
53 * effective substatements, which are either transformed from that prototype or added by inference.
55 final class InferredStatementContext<A, D extends DeclaredStatement<A>, E extends EffectiveStatement<A, D>>
56 extends StatementContextBase<A, D, E> implements OnDemandSchemaTreeStorageNode {
57 // An effective copy view, with enough information to decide what to do next
58 private static final class EffectiveCopy implements Immutable {
60 private final ReactorStmtCtx<?, ?, ?> orig;
61 // Effective view, if the statement is to be reused it equals to orig
62 private final ReactorStmtCtx<?, ?, ?> copy;
64 EffectiveCopy(final ReactorStmtCtx<?, ?, ?> orig, final ReactorStmtCtx<?, ?, ?> copy) {
65 this.orig = requireNonNull(orig);
66 this.copy = requireNonNull(copy);
73 ReactorStmtCtx<?, ?, ?> toChildContext(final @NonNull InferredStatementContext<?, ?, ?> parent) {
74 return isReused() ? orig.replicaAsChildOf(parent) : copy;
77 ReactorStmtCtx<?, ?, ?> toReusedChild(final @NonNull InferredStatementContext<?, ?, ?> parent) {
78 verify(isReused(), "Attempted to discard copy %s", copy);
79 return orig.replicaAsChildOf(parent);
83 private static final Logger LOG = LoggerFactory.getLogger(InferredStatementContext.class);
85 // Sentinel objects for 'substatements', String is a good enough type
86 private static final @NonNull String REUSED_SUBSTATEMENTS = "reused";
87 private static final @NonNull String SWEPT_SUBSTATEMENTS = "swept";
89 private final @NonNull StatementContextBase<A, D, E> prototype;
90 private final @NonNull StatementContextBase<?, ?, ?> parent;
91 private final @NonNull ReactorStmtCtx<A, D, E> originalCtx;
92 private final QNameModule targetModule;
93 private final A argument;
95 // Indicates whether or not this statement's substatement file was modified, i.e. it is not quite the same as the
97 private boolean modified;
100 * Effective substatements, lazily materialized. This field can have four states:
102 * <li>it can be {@code null}, in which case no materialization has taken place</li>
103 * <li>it can be a {@link HashMap}, in which case partial materialization has taken place</li>
104 * <li>it can be a {@link List}, in which case full materialization has taken place</li>
105 * <li>it can be {@link SWEPT_SUBSTATEMENTS}, in which case materialized state is no longer available</li>
108 private Object substatements;
110 private InferredStatementContext(final InferredStatementContext<A, D, E> original,
111 final StatementContextBase<?, ?, ?> parent) {
113 this.parent = requireNonNull(parent);
114 targetModule = original.targetModule;
115 prototype = original.prototype;
116 originalCtx = original.originalCtx;
117 argument = original.argument;
118 modified = original.modified;
119 // Substatements are initialized here
120 substatements = ImmutableList.of();
123 InferredStatementContext(final StatementContextBase<?, ?, ?> parent, final StatementContextBase<A, D, E> prototype,
124 final CopyType myCopyType, final CopyType childCopyType, final QNameModule targetModule) {
125 super(prototype, myCopyType, childCopyType);
126 this.parent = requireNonNull(parent);
127 this.prototype = requireNonNull(prototype);
128 argument = targetModule == null ? prototype.argument()
129 : prototype.definition().adaptArgumentValue(prototype, targetModule);
130 this.targetModule = targetModule;
132 final var origCtx = prototype.getOriginalCtx().orElse(prototype);
133 verify(origCtx instanceof ReactorStmtCtx, "Unexpected original %s", origCtx);
134 originalCtx = (ReactorStmtCtx<A, D, E>) origCtx;
136 // Mark prototype as blocking statement cleanup
141 public Collection<? extends StatementContextBase<?, ?, ?>> mutableDeclaredSubstatements() {
142 return ImmutableList.of();
146 public Collection<? extends Mutable<?, ?, ?>> mutableEffectiveSubstatements() {
147 return mutableEffectiveSubstatements(ensureEffectiveSubstatements());
151 public Iterable<? extends @NonNull StmtContext<?, ?, ?>> allSubstatements() {
152 // No need to concat with declared
153 return effectiveSubstatements();
157 public Stream<? extends @NonNull StmtContext<?, ?, ?>> allSubstatementsStream() {
158 // No need to concat with declared
159 return effectiveSubstatements().stream();
163 public StatementSourceReference sourceReference() {
164 return originalCtx.sourceReference();
168 public String rawArgument() {
169 return originalCtx.rawArgument();
173 public Optional<StmtContext<A, D, E>> getOriginalCtx() {
174 return Optional.of(originalCtx);
178 public Optional<StmtContext<A, D, E>> getPreviousCopyCtx() {
179 return Optional.of(prototype);
183 public D declared() {
185 * Share original instance of declared statement between all effective statements which have been copied or
186 * derived from this original declared statement.
188 return originalCtx.declared();
192 public void removeStatementFromEffectiveSubstatements(final StatementDefinition statementDef) {
193 substatements = removeStatementFromEffectiveSubstatements(ensureEffectiveSubstatements(), statementDef);
197 public void removeStatementFromEffectiveSubstatements(final StatementDefinition statementDef,
198 final String statementArg) {
199 substatements = removeStatementFromEffectiveSubstatements(ensureEffectiveSubstatements(), statementDef,
204 public void addEffectiveSubstatement(final Mutable<?, ?, ?> substatement) {
205 substatements = addEffectiveSubstatement(ensureEffectiveSubstatements(), substatement);
206 afterAddEffectiveSubstatement(substatement);
210 void addEffectiveSubstatementsImpl(final Collection<? extends Mutable<?, ?, ?>> statements) {
211 substatements = addEffectiveSubstatementsImpl(ensureEffectiveSubstatements(), statements);
215 InferredStatementContext<A, D, E> reparent(final StatementContextBase<?, ?, ?> newParent) {
216 return new InferredStatementContext<>(this, newParent);
220 E createEffective(final StatementFactory<A, D, E> factory) {
221 // If we have not materialized we do not have a difference in effective substatements, hence we can forward
222 // towards the source of the statement.
223 accessSubstatements();
224 return substatements == null ? tryToReusePrototype(factory) : createInferredEffective(factory);
227 private @NonNull E createInferredEffective(final @NonNull StatementFactory<A, D, E> factory) {
228 return createInferredEffective(factory, this, streamDeclared(), streamEffective());
232 E createInferredEffective(final StatementFactory<A, D, E> factory, final InferredStatementContext<A, D, E> ctx,
233 final Stream<? extends ReactorStmtCtx<?, ?, ?>> declared,
234 final Stream<? extends ReactorStmtCtx<?, ?, ?>> effective) {
235 return originalCtx.createInferredEffective(factory, ctx, declared, effective);
238 private @NonNull E tryToReusePrototype(final @NonNull StatementFactory<A, D, E> factory) {
239 final var origEffective = prototype.buildEffective();
240 final var origSubstatements = origEffective.effectiveSubstatements();
242 // First check if we can reuse the entire prototype
243 if (!factory.canReuseCurrent(this, prototype, origSubstatements)) {
244 return internAlongCopyAxis(factory, tryToReuseSubstatements(factory, origEffective));
247 // We can reuse this statement let's see if all statements agree...
248 // ... no substatements to deal with, we can freely reuse the original
249 if (origSubstatements.isEmpty()) {
250 LOG.debug("Reusing empty: {}", origEffective);
251 substatements = ImmutableList.of();
253 return origEffective;
256 // ... all are context independent, reuse the original
257 if (allSubstatementsContextIndependent()) {
258 LOG.debug("Reusing context-independent: {}", origEffective);
259 substatements = noRefs() ? REUSED_SUBSTATEMENTS : reusePrototypeReplicas();
261 return origEffective;
264 // ... copy-sensitive check
265 final var declCopy = effectiveCopy(prototype.streamDeclared());
266 final var effCopy = effectiveCopy(prototype.streamEffective());
268 // ... are any copy-sensitive?
269 if (allReused(declCopy) && allReused(effCopy)) {
270 LOG.debug("Reusing after substatement check: {}", origEffective);
271 substatements = noRefs() ? REUSED_SUBSTATEMENTS
272 : reusePrototypeReplicas(Streams.concat(declCopy.stream(), effCopy.stream())
273 .map(copy -> copy.toReusedChild(this)));
275 return origEffective;
278 // *sigh*, ok, heavy lifting through a shallow copy
279 final var declared = adoptSubstatements(declCopy);
280 final var effective = adoptSubstatements(effCopy);
281 substatements = declared.isEmpty() ? effective
282 : Streams.concat(declared.stream(), effective.stream()).collect(ImmutableList.toImmutableList());
285 // Values are the effective copies, hence this efficiently deals with recursion.
286 return internAlongCopyAxis(factory,
287 originalCtx.createInferredEffective(factory, this, declared.stream(), effective.stream()));
290 private @NonNull E tryToReuseSubstatements(final @NonNull StatementFactory<A, D, E> factory,
291 final @NonNull E original) {
292 if (allSubstatementsContextIndependent()) {
293 LOG.debug("Reusing substatements of: {}", prototype);
294 substatements = noRefs() ? REUSED_SUBSTATEMENTS : reusePrototypeReplicas();
296 return factory.copyEffective(this, original);
299 // Fall back to full instantiation, which populates our substatements. Then check if we should be reusing
300 // the substatement list, as this operation turned out to not affect them.
301 final E effective = createInferredEffective(factory);
302 // Since we have forced instantiation to deal with this case, we also need to reset the 'modified' flag
305 if (sameSubstatements(original.effectiveSubstatements(), effective)) {
306 LOG.debug("Reusing unchanged substatements of: {}", prototype);
307 return factory.copyEffective(this, original);
312 private @NonNull E internAlongCopyAxis(final StatementFactory<A, D, E> factory, final @NonNull E stmt) {
314 final EffectiveStatementState state = factory.extractEffectiveState(stmt);
316 return prototype.unmodifiedEffectiveSource().attachEffectiveCopy(state, stmt);
322 private List<ReactorStmtCtx<?, ?, ?>> reusePrototypeReplicas() {
323 return reusePrototypeReplicas(Streams.concat(prototype.streamDeclared(), prototype.streamEffective()));
326 private List<ReactorStmtCtx<?, ?, ?>> reusePrototypeReplicas(final Stream<ReactorStmtCtx<?, ?, ?>> stream) {
329 final var ret = stmt.replicaAsChildOf(this);
330 ret.buildEffective();
333 .collect(Collectors.toUnmodifiableList());
336 private static boolean sameSubstatements(final Collection<?> original, final EffectiveStatement<?, ?> effective) {
337 final var copied = effective.effectiveSubstatements();
338 if (copied != effective.effectiveSubstatements() || original.size() != copied.size()) {
339 // Do not bother if result is treating substatements as transient
343 final var cit = copied.iterator();
344 for (var origChild : original) {
345 verify(cit.hasNext());
346 // Identity comparison on purpose to side-step whatever equality there might be. We want to reuse instances
348 if (origChild != cit.next()) {
352 verify(!cit.hasNext());
356 private static boolean allReused(final List<EffectiveCopy> entries) {
357 return entries.stream().allMatch(EffectiveCopy::isReused);
361 ReactorStmtCtx<A, D, E> unmodifiedEffectiveSource() {
362 return modified ? this : prototype.unmodifiedEffectiveSource();
366 boolean hasEmptySubstatements() {
367 if (substatements == null) {
368 return prototype.hasEmptySubstatements();
370 return substatements instanceof HashMap ? false : ((List<?>) substatements).isEmpty();
374 boolean noSensitiveSubstatements() {
375 accessSubstatements();
376 if (substatements == null) {
377 // No difference, defer to prototype
378 return prototype.allSubstatementsContextIndependent();
380 if (substatements instanceof List) {
381 // Fully materialized, walk all statements
382 return noSensitiveSubstatements(castEffective(substatements));
385 // Partially-materialized. This case has three distinct outcomes:
386 // - prototype does not have a sensitive statement (1)
387 // - protype has a sensitive substatement, and
388 // - we have not marked is as unsupported (2)
389 // - we have marked it as unsupported (3)
391 // Determining the outcome between (2) and (3) is a bother, this check errs on the side of false negative side
392 // and treats (3) as (2) -- i.e. even if we marked a sensitive statement as unsupported, we still consider it
393 // as affecting the result.
394 return prototype.allSubstatementsContextIndependent()
395 && noSensitiveSubstatements(castMaterialized(substatements).values());
399 <X, Z extends EffectiveStatement<X, ?>> @NonNull Optional<X> findSubstatementArgumentImpl(
400 final @NonNull Class<Z> type) {
401 if (substatements instanceof List) {
402 return super.findSubstatementArgumentImpl(type);
405 final Optional<X> templateArg = prototype.findSubstatementArgument(type);
406 if (templateArg.isEmpty()) {
409 if (SchemaTreeEffectiveStatement.class.isAssignableFrom(type)) {
410 // X is known to be QName
411 return (Optional<X>) templateArg.map(template -> ((QName) template).bindTo(targetModule));
417 boolean hasSubstatementImpl(final @NonNull Class<? extends EffectiveStatement<?, ?>> type) {
418 return substatements instanceof List ? super.hasSubstatementImpl(type)
419 // We do not allow deletion of partially-materialized statements, hence this is accurate
420 : prototype.hasSubstatement(type);
424 public <Y extends DeclaredStatement<QName>, Z extends SchemaTreeEffectiveStatement<Y>>
425 StmtContext<QName, Y, Z> requestSchemaTreeChild(final QName qname) {
426 if (substatements instanceof List) {
427 // We have performed materialization, hence we have triggered creation of all our schema tree child
432 // Determine if the requested QName can be satisfied from the prototype: for that to happen it has to match
433 // our transformation implied by targetModule.
434 final var requestedNamespace = qname.getModule();
435 final QName templateQName;
436 if (targetModule != null) {
437 if (!targetModule.equals(requestedNamespace)) {
440 templateQName = qname.bindTo(StmtContextUtils.getModuleQName(prototype));
442 if (!StmtContextUtils.getModuleQName(prototype).equals(requestedNamespace)) {
445 templateQName = qname;
448 LOG.debug("Materializing child {} from {}", qname, templateQName);
450 final StmtContext<?, ?, ?> template;
451 if (prototype instanceof InferredStatementContext<?, ?, ?> inferredPrototype) {
452 // Note: we need to access namespace here, as the target statement may have already been populated, in which
453 // case we want to obtain the statement in local namespace storage.
454 template = inferredPrototype.namespaceItem(ParserNamespaces.schemaTree(), templateQName);
456 template = prototype.allSubstatementsStream()
457 .filter(stmt -> stmt.producesEffective(SchemaTreeEffectiveStatement.class)
458 && templateQName.equals(stmt.argument()))
463 if (template == null) {
464 // We do not have a template, this child does not exist. It may be added later, but that is someone else's
466 LOG.debug("Child {} does not have a template", qname);
470 @SuppressWarnings("unchecked")
471 final var ret = (Mutable<QName, Y, Z>) copySubstatement(template).orElseThrow(
472 () -> new InferenceException(this, "Failed to materialize child %s template %s", qname, template));
473 addMaterialized(template, ensureCompletedPhase(ret));
475 LOG.debug("Child {} materialized", qname);
479 // Instantiate this statement's effective substatements. Note this method has side-effects in namespaces and overall
480 // BuildGlobalContext, hence it must be called at most once.
481 private List<ReactorStmtCtx<?, ?, ?>> ensureEffectiveSubstatements() {
482 accessSubstatements();
483 return substatements instanceof List ? castEffective(substatements)
484 // We have either not started or have only partially-materialized statements, ensure full materialization
485 : initializeSubstatements();
489 Iterator<ReactorStmtCtx<?, ?, ?>> effectiveChildrenToComplete() {
490 // When we have not initialized, there are no statements to catch up: we will catch up when we are copying
491 // from prototype (which is already at ModelProcessingPhase.EFFECTIVE_MODEL).
492 if (substatements == null) {
493 return Collections.emptyIterator();
495 accessSubstatements();
496 if (substatements instanceof HashMap) {
497 return castMaterialized(substatements).values().iterator();
499 return castEffective(substatements).iterator();
504 Stream<? extends @NonNull ReactorStmtCtx<?, ?, ?>> streamDeclared() {
505 return Stream.empty();
509 Stream<? extends @NonNull ReactorStmtCtx<?, ?, ?>> streamEffective() {
510 return ensureEffectiveSubstatements().stream().filter(StmtContext::isSupportedToBuildEffective);
513 private void accessSubstatements() {
514 if (substatements instanceof String) {
515 throw new VerifyException("Access to " + substatements + " substatements of " + this);
520 void markNoParentRef() {
521 final Object local = substatements;
523 markNoParentRef(castEffective(local));
528 int sweepSubstatements() {
529 final Object local = substatements;
530 substatements = SWEPT_SUBSTATEMENTS;
532 if (local instanceof List) {
533 final List<ReactorStmtCtx<?, ?, ?>> list = castEffective(local);
535 count = countUnswept(list);
540 private List<ReactorStmtCtx<?, ?, ?>> initializeSubstatements() {
541 final var declared = prototype.mutableDeclaredSubstatements();
542 final var effective = prototype.mutableEffectiveSubstatements();
544 // We are about to instantiate some substatements. The simple act of materializing them may end up triggering
545 // namespace lookups, which in turn can materialize copies by themselves, running ahead of our materialization.
546 // We therefore need a meeting place for, which are the partially-materialized substatements. If we do not have
547 // them yet, instantiate them and we need to populate them as well.
548 final int expectedSize = declared.size() + effective.size();
549 var materializedSchemaTree = castMaterialized(substatements);
550 if (materializedSchemaTree == null) {
551 substatements = materializedSchemaTree = Maps.newHashMapWithExpectedSize(expectedSize);
554 final var buffer = new ArrayList<ReactorStmtCtx<?, ?, ?>>(expectedSize);
555 for (var stmtContext : declared) {
556 if (stmtContext.isSupportedByFeatures()) {
557 copySubstatement(stmtContext, buffer, materializedSchemaTree);
560 for (var stmtContext : effective) {
561 copySubstatement(stmtContext, buffer, materializedSchemaTree);
564 final var ret = beforeAddEffectiveStatementUnsafe(ImmutableList.of(), buffer.size());
574 // Statement copy mess starts here. As it turns out, it's not that much of a mess, but it does make your head spin
575 // sometimes. Tread softly because you tread on my dreams.
578 private ImmutableList<ReactorStmtCtx<?, ?, ?>> adoptSubstatements(final List<EffectiveCopy> list) {
580 .map(copy -> copy.toChildContext(this))
581 .collect(ImmutableList.toImmutableList());
584 private List<EffectiveCopy> effectiveCopy(final Stream<? extends ReactorStmtCtx<?, ?, ?>> stream) {
586 .map(this::effectiveCopy)
587 .filter(Objects::nonNull)
588 .collect(Collectors.toUnmodifiableList());
592 * Create an effective copy of a prototype's substatement as a child of this statement. This is a bit tricky, as
593 * we are called from {@link #tryToReusePrototype(StatementFactory)} and we are creating copies of prototype
594 * statements -- which triggers {@link StatementSupport#onStatementAdded(Mutable)}, which in turn can loop around
595 * to {@link #requestSchemaTreeChild(QName)} -- which creates the statement and hence we can end up performing two
598 * @param template Prototype substatement
599 * @return An {@link EffectiveCopy}, or {@code null} if not applicable
601 private @Nullable EffectiveCopy effectiveCopy(final ReactorStmtCtx<?, ?, ?> template) {
602 if (substatements instanceof HashMap) {
603 // we have partial materialization by requestSchemaTreeChild() after we started tryToReusePrototype(), check
604 // if the statement has already been copied -- we need to pick it up in that case.
605 final var copy = castMaterialized(substatements).get(template);
607 return new EffectiveCopy(template, copy);
611 final var copy = template.asEffectiveChildOf(this, childCopyType(), targetModule);
612 return copy == null ? null : new EffectiveCopy(template, copy);
615 private void copySubstatement(final Mutable<?, ?, ?> substatement, final Collection<ReactorStmtCtx<?, ?, ?>> buffer,
616 final Map<StmtContext<?, ?, ?>, ReactorStmtCtx<?, ?, ?>> materializedSchemaTree) {
617 // Consult materialized substatements. We are in a copy operation and will end up throwing materialized
618 // statements away -- hence we do not perform Map.remove() to save ourselves a mutation operation.
620 // We could also perform a Map.containsKey() and perform a bulk add, but that would mean the statement order
621 // against parent would change -- and we certainly do not want that to happen.
622 final var materialized = findMaterialized(materializedSchemaTree, substatement);
623 if (materialized == null) {
624 copySubstatement(substatement).ifPresent(copy -> {
625 final var cast = ensureCompletedPhase(copy);
626 materializedSchemaTree.put(substatement, cast);
630 buffer.add(materialized);
634 private <X, Y extends DeclaredStatement<X>, Z extends EffectiveStatement<X, Y>> Optional<Mutable<X, Y, Z>>
635 copySubstatement(final StmtContext<X, Y, Z> substatement) {
636 return substatement.copyAsChildOf(this, childCopyType(), targetModule);
639 private void addMaterialized(final StmtContext<?, ?, ?> template, final ReactorStmtCtx<?, ?, ?> copy) {
640 final HashMap<StmtContext<?, ?, ?>, ReactorStmtCtx<?, ?, ?>> materializedSchemaTree;
641 if (substatements == null) {
642 // Lazy initialization of backing map. We do not expect this to be used often or multiple times -- each hit
643 // here means an inference along schema tree, such as deviate/augment. HashMap requires power-of-two and
644 // defaults to 0.75 load factor -- we therefore size it to 4, i.e. next two inserts will not cause a
645 // resizing operation.
646 materializedSchemaTree = new HashMap<>(4);
647 substatements = materializedSchemaTree;
650 verify(substatements instanceof HashMap, "Unexpected substatements %s", substatements);
651 materializedSchemaTree = castMaterialized(substatements);
654 final var existing = materializedSchemaTree.put(template, copy);
655 if (existing != null) {
656 throw new VerifyException(
657 "Unexpected duplicate request for " + copy.argument() + " previous result was " + existing);
661 private static @Nullable ReactorStmtCtx<?, ?, ?> findMaterialized(
662 final Map<StmtContext<?, ?, ?>, ReactorStmtCtx<?, ?, ?>> materializedSchemaTree,
663 final StmtContext<?, ?, ?> template) {
664 return materializedSchemaTree == null ? null : materializedSchemaTree.get(template);
667 @SuppressWarnings("unchecked")
668 private static List<ReactorStmtCtx<?, ?, ?>> castEffective(final Object substatements) {
669 return (List<ReactorStmtCtx<?, ?, ?>>) substatements;
672 @SuppressWarnings("unchecked")
673 private static HashMap<StmtContext<?, ?, ?>, ReactorStmtCtx<?, ?, ?>> castMaterialized(final Object substatements) {
674 return (HashMap<StmtContext<?, ?, ?>, ReactorStmtCtx<?, ?, ?>>) substatements;
677 // Statement copy mess ends here
680 * KEEP THINGS ORGANIZED!
682 * below methods exist in the same form in SubstatementContext. If any adjustment is made here, make sure it is
683 * properly updated there.
686 public A argument() {
691 public StatementContextBase<?, ?, ?> getParentContext() {
696 public StatementContextBase<?, ?, ?> getParentNamespaceStorage() {
701 public RootStatementContext<?, ?, ?> getRoot() {
702 return parent.getRoot();
706 public EffectiveConfig effectiveConfig() {
707 return effectiveConfig(parent);
711 protected boolean isIgnoringIfFeatures() {
712 return isIgnoringIfFeatures(parent);
716 protected boolean isIgnoringConfig() {
717 return isIgnoringConfig(parent);
721 public boolean isSupportedToBuildEffective() {
722 // Our prototype may have fizzled, for example due to it being a implicit statement guarded by if-feature which
723 // evaluates to false. If that happens, this statement also needs to report unsupported -- and we want to cache
724 // that information for future reuse.
725 boolean ret = super.isSupportedToBuildEffective();
726 if (ret && !prototype.isSupportedToBuildEffective()) {
734 protected boolean isParentSupportedByFeatures() {
735 return parent.isSupportedByFeatures();