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GH-1348: find references from listeners to publishers and vice versa …
…now works Fixes GH-1348
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131 changes: 131 additions & 0 deletions
131
...src/main/java/org/springframework/ide/vscode/boot/java/events/EventReferenceProvider.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,131 @@ | ||
| /******************************************************************************* | ||
| * Copyright (c) 2025 Broadcom | ||
| * All rights reserved. This program and the accompanying materials | ||
| * are made available under the terms of the Eclipse Public License v1.0 | ||
| * which accompanies this distribution, and is available at | ||
| * https://www.eclipse.org/legal/epl-v10.html | ||
| * | ||
| * Contributors: | ||
| * Broadcom - initial API and implementation | ||
| *******************************************************************************/ | ||
| package org.springframework.ide.vscode.boot.java.events; | ||
|
|
||
| import java.util.Arrays; | ||
| import java.util.List; | ||
| import java.util.Optional; | ||
|
|
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| import org.eclipse.jdt.core.dom.ASTNode; | ||
| import org.eclipse.jdt.core.dom.Annotation; | ||
| import org.eclipse.jdt.core.dom.ITypeBinding; | ||
| import org.eclipse.lsp4j.Location; | ||
| import org.eclipse.lsp4j.Position; | ||
| import org.eclipse.lsp4j.jsonrpc.CancelChecker; | ||
| import org.slf4j.Logger; | ||
| import org.slf4j.LoggerFactory; | ||
| import org.springframework.ide.vscode.boot.index.SpringMetamodelIndex; | ||
| import org.springframework.ide.vscode.boot.java.handlers.ReferenceProvider; | ||
| import org.springframework.ide.vscode.commons.java.IJavaProject; | ||
| import org.springframework.ide.vscode.commons.protocol.spring.Bean; | ||
| import org.springframework.ide.vscode.commons.util.BadLocationException; | ||
| import org.springframework.ide.vscode.commons.util.text.TextDocument; | ||
|
|
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| /** | ||
| * @author Martin Lippert | ||
| */ | ||
| public class EventReferenceProvider implements ReferenceProvider { | ||
|
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| private static final Logger log = LoggerFactory.getLogger(EventReferenceProvider.class); | ||
|
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| private final SpringMetamodelIndex index; | ||
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| public EventReferenceProvider(SpringMetamodelIndex index) { | ||
| this.index = index; | ||
| } | ||
|
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| @Override | ||
| public List<? extends Location> provideReferences(CancelChecker cancelToken, IJavaProject project, ASTNode node, | ||
| Annotation annotation, ITypeBinding type, int offset) { | ||
| return null; | ||
| } | ||
|
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| @Override | ||
| public List<? extends Location> provideReferences(CancelChecker cancelToken, IJavaProject project, TextDocument doc, ASTNode node, int offset) { | ||
| try { | ||
| Position position = doc.toPosition(offset); | ||
|
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| Bean[] beans = index.getBeans(); | ||
|
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| // when offset is inside an event listener, find the respective event type | ||
| Optional<String> listenerEventType = Arrays.stream(beans) | ||
| .filter(bean -> bean.getLocation().getUri().equals(doc.getUri())) | ||
| .flatMap(bean -> bean.getChildren().stream()) | ||
| .filter(element -> element instanceof EventListenerIndexElement) | ||
| .map(element -> (EventListenerIndexElement) element) | ||
| .filter(eventListener -> isPositionInside(position, eventListener.getLocation())) | ||
| .map(eventListener -> eventListener.getEventType()) | ||
| .findAny(); | ||
|
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| if (listenerEventType.isPresent()) { | ||
| // use the listener event type to look for publishers for that type | ||
| String eventType = listenerEventType.get(); | ||
|
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| List<Location> foundLocations = Arrays.stream(beans) | ||
| .flatMap(bean -> bean.getChildren().stream()) | ||
| .filter(element -> element instanceof EventPublisherIndexElement) | ||
| .map(element -> (EventPublisherIndexElement) element) | ||
| .filter(publisher -> publisher.getEventType().equals(eventType)) | ||
| .map(publisher -> publisher.getLocation()) | ||
| .toList(); | ||
|
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| if (foundLocations.size() > 0) { | ||
| return foundLocations; | ||
| } | ||
| } | ||
|
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| // when offset is inside an event publisher, find the respective event type | ||
| else { | ||
| Optional<String> publisherEventType = Arrays.stream(beans) | ||
| .filter(bean -> bean.getLocation().getUri().equals(doc.getUri())) | ||
| .flatMap(bean -> bean.getChildren().stream()) | ||
| .filter(element -> element instanceof EventPublisherIndexElement) | ||
| .map(element -> (EventPublisherIndexElement) element) | ||
| .filter(eventListener -> isPositionInside(position, eventListener.getLocation())) | ||
| .map(eventListener -> eventListener.getEventType()) | ||
| .findAny(); | ||
|
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| if (publisherEventType.isPresent()) { | ||
| // use the listener event type to look for publishers for that type | ||
| String eventType = publisherEventType.get(); | ||
|
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| List<Location> foundLocations = Arrays.stream(beans) | ||
| .flatMap(bean -> bean.getChildren().stream()) | ||
| .filter(element -> element instanceof EventListenerIndexElement) | ||
| .map(element -> (EventListenerIndexElement) element) | ||
| .filter(listener -> listener.getEventType().equals(eventType)) | ||
| .map(listener-> listener.getLocation()) | ||
| .toList(); | ||
|
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| if (foundLocations.size() > 0) { | ||
| return foundLocations; | ||
| } | ||
| } | ||
|
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| } | ||
|
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| } catch (BadLocationException e) { | ||
| log.error("", e); | ||
| } | ||
| return null; | ||
| } | ||
|
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| private boolean isPositionInside(Position position, Location location) { | ||
| boolean afterStart = position.getLine() > location.getRange().getStart().getLine() | ||
| || (position.getLine() == location.getRange().getStart().getLine() && position.getCharacter() >= location.getRange().getStart().getCharacter()); | ||
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| boolean beforeEnd = position.getLine() < location.getRange().getEnd().getLine() | ||
| || (position.getLine() == location.getRange().getEnd().getLine() && position.getCharacter() <= location.getRange().getEnd().getCharacter()); | ||
|
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| return afterStart && beforeEnd; | ||
| } | ||
|
|
||
| } |
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