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147
bundles/org.eclipse.cdt.lsp/src/org/eclipse/cdt/lsp/internal/server/URIEnableCache.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,147 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2025 Contributors to the Eclipse Foundation. | ||
| * This program and the accompanying materials are made | ||
| * available under the terms of the Eclipse Public License 2.0 | ||
| * which is available at https://www.eclipse.org/legal/epl-2.0/ | ||
| * | ||
| * SPDX-License-Identifier: EPL-2.0 | ||
| * | ||
| * Contributors: | ||
| * See git history | ||
| *******************************************************************************/ | ||
|
|
||
| package org.eclipse.cdt.lsp.internal.server; | ||
|
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| import java.net.URI; | ||
| import java.util.Arrays; | ||
| import java.util.Collections; | ||
| import java.util.Map; | ||
| import java.util.Optional; | ||
|
|
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| import org.eclipse.cdt.internal.core.LRUCache; | ||
| import org.eclipse.cdt.lsp.editor.EditorMetadata; | ||
| import org.eclipse.core.internal.content.ContentTypeManager; | ||
| import org.eclipse.core.runtime.content.IContentTypeManager.ContentTypeChangeEvent; | ||
| import org.eclipse.core.runtime.content.IContentTypeManager.IContentTypeChangeListener; | ||
| import org.eclipse.core.runtime.preferences.IEclipsePreferences.IPreferenceChangeListener; | ||
| import org.eclipse.core.runtime.preferences.IEclipsePreferences.PreferenceChangeEvent; | ||
| import org.eclipse.lsp4e.LSPEclipseUtils; | ||
| import org.eclipse.ui.IPartListener; | ||
| import org.eclipse.ui.IWindowListener; | ||
| import org.eclipse.ui.IWorkbenchPart; | ||
| import org.eclipse.ui.IWorkbenchWindow; | ||
| import org.eclipse.ui.PlatformUI; | ||
| import org.eclipse.ui.internal.genericeditor.ExtensionBasedTextEditor; | ||
|
|
||
| /** | ||
| * Caches the enable status for a given resource URI. Used by {@link HasLanguageServerPropertyTester#test(Object, String, Object[], Object)} | ||
| * The cache is getting cleared: on changes in the C/C++ content types or the prefer LSP editor option has been changed (workspace or project level). | ||
| * A resource URI shall be removed from the cache if it's getting closed in the editor. | ||
| */ | ||
| public final class URIEnableCache | ||
| implements IPreferenceChangeListener, IContentTypeChangeListener, IPartListener, IWindowListener { | ||
| private static final String C_SOURCE = "org.eclipse.cdt.core.cSource"; //$NON-NLS-1$ | ||
| private static final String CXX_SOURCE = "org.eclipse.cdt.core.cxxSource"; //$NON-NLS-1$ | ||
| private static final String C_HEADER = "org.eclipse.cdt.core.cHeader"; //$NON-NLS-1$ | ||
| private static final String CXX_HEADER = "org.eclipse.cdt.core.cxxHeader"; //$NON-NLS-1$ | ||
| private static final Map<URI, Boolean> cache = Collections.synchronizedMap(new LRUCache<>(100)); | ||
| private static URIEnableCache instance = null; | ||
|
|
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| private URIEnableCache() { | ||
| ContentTypeManager.getInstance().addContentTypeChangeListener(this); | ||
| if (PlatformUI.isWorkbenchRunning()) { | ||
| var workbench = PlatformUI.getWorkbench(); | ||
| workbench.addWindowListener(this); | ||
| Arrays.stream(workbench.getWorkbenchWindows()).map(IWorkbenchWindow::getPages).flatMap(Arrays::stream) | ||
| .forEach(p -> p.addPartListener(this)); | ||
| } | ||
| } | ||
|
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| public static void stop() { | ||
| if (instance != null) { | ||
| var workbench = PlatformUI.getWorkbench(); | ||
| workbench.removeWindowListener(instance); | ||
| Arrays.stream(workbench.getWorkbenchWindows()).map(IWorkbenchWindow::getPages).flatMap(Arrays::stream) | ||
| .forEach(p -> p.removePartListener(instance)); | ||
| cache.clear(); | ||
| } | ||
| } | ||
|
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| public static synchronized URIEnableCache getInstance() { | ||
| if (instance == null) { | ||
| instance = new URIEnableCache(); | ||
| } | ||
| return instance; | ||
| } | ||
|
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| public Boolean get(URI uri) { | ||
| return cache.get(uri); | ||
| } | ||
|
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| public void put(URI uri, Boolean value) { | ||
| cache.put(uri, value); | ||
| } | ||
|
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| @Override | ||
| public void preferenceChange(PreferenceChangeEvent event) { | ||
| if (EditorMetadata.PREFER_LSP_KEY.contentEquals(event.getKey())) { | ||
| cache.clear(); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public void contentTypeChanged(ContentTypeChangeEvent event) { | ||
| var id = event.getContentType().getId(); | ||
| if (C_SOURCE.contentEquals(id) || CXX_SOURCE.contentEquals(id) || C_HEADER.contentEquals(id) | ||
| || CXX_HEADER.contentEquals(id)) { | ||
| cache.clear(); | ||
| } | ||
| } | ||
|
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||
| @Override | ||
| public void partActivated(IWorkbenchPart part) { | ||
| // do nothing | ||
| } | ||
|
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||
| @Override | ||
| public void partBroughtToTop(IWorkbenchPart part) { | ||
| // do nothing | ||
| } | ||
|
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| @Override | ||
| public void partClosed(IWorkbenchPart part) { | ||
| if (part instanceof ExtensionBasedTextEditor editor) { | ||
| Optional.ofNullable(LSPEclipseUtils.toUri(editor.getEditorInput())).ifPresent(uri -> cache.remove(uri)); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public void partDeactivated(IWorkbenchPart part) { | ||
| // do nothing | ||
| } | ||
|
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||
| @Override | ||
| public void partOpened(IWorkbenchPart part) { | ||
| // do nothing | ||
| } | ||
|
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||
| @Override | ||
| public void windowActivated(IWorkbenchWindow window) { | ||
| // do nothing | ||
| } | ||
|
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| @Override | ||
| public void windowDeactivated(IWorkbenchWindow window) { | ||
| // do nothing | ||
| } | ||
|
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| @Override | ||
| public void windowClosed(IWorkbenchWindow window) { | ||
| Arrays.stream(window.getPages()).forEach(p -> p.removePartListener(this)); | ||
| } | ||
|
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| @Override | ||
| public void windowOpened(IWorkbenchWindow window) { | ||
| Arrays.stream(window.getPages()).forEach(p -> p.addPartListener(this)); | ||
| } | ||
| } |
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