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Refactor IncrementalBuilder and Indexer. #2827

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Refactor IncrementalBuilder and Indexer. #2827

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148 changes: 84 additions & 64 deletions org.eclipse.xtext/src/org/eclipse/xtext/build/IncrementalBuilder.java
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Original file line number Diff line number Diff line change
Expand Up @@ -17,6 +17,7 @@
import java.util.Set;
import java.util.function.Predicate;
import java.util.stream.Collectors;
import java.util.stream.Stream;

import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
Expand Down Expand Up @@ -44,6 +45,7 @@
import org.eclipse.xtext.resource.XtextResourceSet;
import org.eclipse.xtext.resource.clustering.DisabledClusteringPolicy;
import org.eclipse.xtext.resource.clustering.IResourceClusteringPolicy;
import org.eclipse.xtext.resource.impl.ResourceDescriptionsData;
import org.eclipse.xtext.resource.persistence.IResourceStorageFacade;
import org.eclipse.xtext.resource.persistence.SerializableResourceDescription;
import org.eclipse.xtext.resource.persistence.SourceLevelURIsAdapter;
Expand Down Expand Up @@ -227,80 +229,43 @@ protected void unloadResource(URI uri, Predicate<Resource> condition) {
}
}

/**
* Unload the given uris that are not already in the unloaded set.
*
* @param uriStream
* the uris to unload.
* @param unloaded
* the set of unloaded uris, to which the given uris to unload will be added.
* @since 2.33
*/
protected void unloadResources(final Stream<URI> uriStream, final Set<URI> unloaded) {
uriStream.forEach(uri -> {
if (unloaded.add(uri)) {
unloadResource(uri);
}
});
}

public IncrementalBuilder.Result launch() {
Source2GeneratedMapping newSource2GeneratedMapping = request.getState().getFileMappings();
Set<URI> unloaded = new HashSet<>();
for (URI deleted : request.getDeletedFiles()) {
if (unloaded.add(deleted)) {
unloadResource(deleted);
}
}
for (URI dirty : request.getDirtyFiles()) {
if (unloaded.add(dirty)) {
unloadResource(dirty);
}
}
for (URI source : request.getDeletedFiles()) {
request.getAfterValidate().afterValidate(source, Collections.emptyList());
Map<URI, String> outputConfigs = newSource2GeneratedMapping.deleteSourceAndGetOutputConfigs(source);
for (URI generated : outputConfigs.keySet()) {
IResourceServiceProvider serviceProvider = context.getResourceServiceProvider(source);
XtextResourceSet resourceSet = request.getResourceSet();
Set<OutputConfiguration> configs = serviceProvider
.get(IContextualOutputConfigurationProvider2.class).getOutputConfigurations(resourceSet);
String configName = outputConfigs.get(generated);
OutputConfiguration config = FluentIterable.from(configs)
.firstMatch(it -> it.getName().equals(configName)).orNull();
if (config != null && config.isCleanUpDerivedResources()) {
try {
resourceSet.getURIConverter().delete(generated, Collections.emptyMap());
request.getAfterDeleteFile().apply(generated);
} catch (IOException e) {
throw new RuntimeIOException(e);
}
}
}
}
unloadResources(request.getDeletedFiles().stream(), unloaded);
unloadResources(request.getDirtyFiles().stream(), unloaded);

Source2GeneratedMapping newSource2GeneratedMapping = request.getState().getFileMappings();
deleteGeneratedSources(getRequest().getDeletedFiles(), newSource2GeneratedMapping);
Indexer.IndexResult result = indexer.computeAndIndexAffected(request, context);
operationCanceledManager.checkCanceled(request.getCancelIndicator());

List<IResourceDescription.Delta> resolvedDeltas = new ArrayList<>();
for (IResourceDescription.Delta delta : result.getResourceDeltas()) {
URI uri = delta.getUri();
if (delta.getOld() != null && unloaded.add(uri)) {
unloadResource(uri);
}
if (delta.getNew() == null) {
resolvedDeltas.add(delta);
}
}
result.getResourceDeltas().stream().filter(delta -> delta.getNew() == null).forEach(resolvedDeltas::add);
unloadResources(result.getResourceDeltas().stream().filter(it -> it.getOld() != null).map(Delta::getUri),
unloaded);
List<URI> toBeBuilt = result.getResourceDeltas().stream().filter((it) -> it.getNew() != null)
.map(Delta::getUri).collect(Collectors.toList());

installSourceLevelURIs(toBeBuilt);
Iterable<IResourceDescription.Delta> deltas = context.executeClustered(toBeBuilt,
(resource) -> {
CancelIndicator cancelIndicator = request.getCancelIndicator();
operationCanceledManager.checkCanceled(cancelIndicator);
// trigger init
resource.getContents();
EcoreUtil2.resolveLazyCrossReferences(resource, CancelIndicator.NullImpl);
operationCanceledManager.checkCanceled(cancelIndicator);
IResourceServiceProvider serviceProvider = getResourceServiceProvider(resource);
IResourceDescription.Manager manager = serviceProvider.getResourceDescriptionManager();
IResourceDescription description = manager.getResourceDescription(resource);
IResourceDescription copiedDescription = getSerializableResourceDescription(description);
result.getNewIndex().addDescription(resource.getURI(), copiedDescription);
operationCanceledManager.checkCanceled(cancelIndicator);
if (!request.isIndexOnly() && validate(resource) && serviceProvider.get(IShouldGenerate.class)
.shouldGenerate(resource, CancelIndicator.NullImpl)) {
operationCanceledManager.checkCanceled(cancelIndicator);
generate(resource, request, newSource2GeneratedMapping);
}
IResourceDescription old = context.getOldState().getResourceDescriptions()
.getResourceDescription(resource.getURI());
return manager.createDelta(old, copiedDescription);
});
resource -> buildResource(resource, result.getNewIndex(), newSource2GeneratedMapping));

Iterables.addAll(resolvedDeltas, deltas);
return new IncrementalBuilder.Result(request.getState(), resolvedDeltas);
Expand Down Expand Up @@ -332,6 +297,61 @@ protected Indexer getIndexer() {
return indexer;
}

/**
* @since 2.33
*/
protected void deleteGeneratedSources(final List<URI> deletedSources,
final Source2GeneratedMapping newSource2GeneratedMapping) {
for (URI source : deletedSources) {
request.getAfterValidate().afterValidate(source, Collections.emptyList());
Map<URI, String> outputConfigs = newSource2GeneratedMapping.deleteSourceAndGetOutputConfigs(source);
for (URI generated : outputConfigs.keySet()) {
IResourceServiceProvider serviceProvider = context.getResourceServiceProvider(source);
XtextResourceSet resourceSet = request.getResourceSet();
Set<OutputConfiguration> configs = serviceProvider
.get(IContextualOutputConfigurationProvider2.class).getOutputConfigurations(resourceSet);
String configName = outputConfigs.get(generated);
OutputConfiguration config = FluentIterable.from(configs)
.firstMatch(it -> it.getName().equals(configName)).orNull();
if (config != null && config.isCleanUpDerivedResources()) {
try {
resourceSet.getURIConverter().delete(generated, Collections.emptyMap());
request.getAfterDeleteFile().apply(generated);
} catch (IOException e) {
throw new RuntimeIOException(e);
}
}
}
}
}

/**
* @since 2.33
*/
protected IResourceDescription.Delta buildResource(final Resource resource,
final ResourceDescriptionsData newIndex, final Source2GeneratedMapping newSource2GeneratedMapping) {
CancelIndicator cancelIndicator = request.getCancelIndicator();
operationCanceledManager.checkCanceled(cancelIndicator);
// trigger init
resource.getContents();
EcoreUtil2.resolveLazyCrossReferences(resource, CancelIndicator.NullImpl);
operationCanceledManager.checkCanceled(cancelIndicator);
IResourceServiceProvider serviceProvider = getResourceServiceProvider(resource);
IResourceDescription.Manager manager = serviceProvider.getResourceDescriptionManager();
IResourceDescription description = manager.getResourceDescription(resource);
IResourceDescription copiedDescription = getSerializableResourceDescription(description);
newIndex.addDescription(resource.getURI(), copiedDescription);
operationCanceledManager.checkCanceled(cancelIndicator);
if (!request.isIndexOnly() && validate(resource)
&& serviceProvider.get(IShouldGenerate.class).shouldGenerate(resource, CancelIndicator.NullImpl)) {
operationCanceledManager.checkCanceled(cancelIndicator);
generate(resource, request, newSource2GeneratedMapping);
}
IResourceDescription old = context.getOldState().getResourceDescriptions()
.getResourceDescription(resource.getURI());
return manager.createDelta(old, copiedDescription);
}

/**
* @since 2.28
*/
Expand Down
53 changes: 47 additions & 6 deletions org.eclipse.xtext/src/org/eclipse/xtext/build/Indexer.java
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Original file line number Diff line number Diff line change
Expand Up @@ -108,9 +108,12 @@ public String toString() {
private OperationCanceledManager operationCanceledManager;

/**
* Compute an updated index.
* Compute an initial index. Explicit calls to {@link #computeAndIndexAffected(Collection, IndexResult, BuildRequest, BuildContext)}
* are needed to complete indexing.
*
* @since 2.33
*/
public Indexer.IndexResult computeAndIndexAffected(BuildRequest request, BuildContext context) {
public Indexer.IndexResult initialIndex(final BuildRequest request, final BuildContext context) {
ResourceDescriptionsData previousIndex = context.getOldState().getResourceDescriptions();
ResourceDescriptionsData newIndex = request.getState().getResourceDescriptions();
List<IResourceDescription.Delta> deltas = new ArrayList<>();
Expand All @@ -119,16 +122,30 @@ public Indexer.IndexResult computeAndIndexAffected(BuildRequest request, BuildCo
for (IResourceDescription.Delta delta : deltas) {
newIndex.register(delta);
}
return new Indexer.IndexResult(deltas, newIndex);
}

/**
* Compute an updated index based on new deltas and a previously calculated {@link #initialIndex(BuildRequest, BuildContext)}.
*
* @since 2.33
*/
public List<IResourceDescription.Delta> computeAndIndexAffected(
final Collection<IResourceDescription.Delta> newDeltas, final Indexer.IndexResult result,
final BuildRequest request, final BuildContext context) {
List<IResourceDescription.Delta> deltas = result.getResourceDeltas();
Set<IResourceDescription.Delta> allDeltas = new HashSet<>(deltas);
allDeltas.addAll(request.getExternalDeltas());
Set<URI> deltaSet = FluentIterable.from(deltas).transform(Delta::getUri).toSet();
ResourceDescriptionsData previousIndex = context.getOldState().getResourceDescriptions();
List<URI> allAffected = FluentIterable.from(previousIndex.getAllResourceDescriptions())
.transform(IResourceDescription::getURI).filter(it -> !deltaSet.contains(it)).filter(it -> {
IResourceServiceProvider resourceServiceProvider = context.getResourceServiceProvider(it);
if (resourceServiceProvider != null) {
IResourceDescription.Manager manager = resourceServiceProvider.getResourceDescriptionManager();
IResourceDescription resourceDescription = previousIndex.getResourceDescription(it);
return isAffected(resourceDescription, manager, allDeltas, allDeltas, newIndex);
return isAffected(resourceDescription, manager, newDeltas, allDeltas,
result.getNewIndex());
} else {
IResourceDescription.Delta delta = getDeltaForDeletedResource(it, previousIndex);
if (delta != null) {
Expand All @@ -137,8 +154,19 @@ public Indexer.IndexResult computeAndIndexAffected(BuildRequest request, BuildCo
return false;
}
}).toList();
deltas.addAll(getDeltasForChangedResources(allAffected, previousIndex, context));
return new Indexer.IndexResult(deltas, newIndex);
List<IResourceDescription.Delta> affectedDeltas = getDeltasForChangedResources(allAffected, previousIndex,
context);
deltas.addAll(affectedDeltas);
return affectedDeltas;
}

/**
* Compute an updated index.
*/
public Indexer.IndexResult computeAndIndexAffected(BuildRequest request, BuildContext context) {
Indexer.IndexResult result = initialIndex(request, context);
computeAndIndexAffected(result.getResourceDeltas(), result, request, context);
return result;
}

/**
Expand All @@ -152,7 +180,7 @@ protected List<IResourceDescription.Delta> getDeltasForDeletedResources(BuildReq
IResourceServiceProvider resourceServiceProvider = context.getResourceServiceProvider(deleted);
if (resourceServiceProvider != null) {
operationCanceledManager.checkCanceled(context.getCancelIndicator());
IResourceDescription.Delta delta = getDeltaForDeletedResource(deleted, oldIndex);
IResourceDescription.Delta delta = getDeltaForDeletedResource(deleted, oldIndex, resourceServiceProvider.getResourceDescriptionManager());
if (delta != null) {
deltas.add(delta);
}
Expand All @@ -169,8 +197,21 @@ protected List<IResourceDescription.Delta> getDeltasForDeletedResources(BuildReq
*
*/
protected IResourceDescription.Delta getDeltaForDeletedResource(URI uri, ResourceDescriptionsData oldIndex) {
return getDeltaForDeletedResource(uri, oldIndex, null);
}

/**
* Gets a delta for a resource that shall be deleted using the resource description manager if provided.
*
* @since 2.33
*
*/
protected IResourceDescription.Delta getDeltaForDeletedResource(URI uri, ResourceDescriptionsData oldIndex, IResourceDescription.Manager manager) {
IResourceDescription oldDescription = oldIndex.getResourceDescription(uri);
if (oldDescription != null) {
if (manager != null) {
return manager.createDelta(oldDescription, null);
}
return new DefaultResourceDescriptionDelta(oldDescription, null);
}
return null;
Expand Down