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added reference handler mechanism

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This commit is contained in:
Martin Lippert
2017-03-06 10:02:43 +01:00
parent c60de23c62
commit 7b4db21465
2 changed files with 35 additions and 1 deletions
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24
vscode-extensions/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/ReferencesHandler.java Normal file
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@@ -0,0 +1,24 @@
/*******************************************************************************
* Copyright (c) 2017 Pivotal, Inc.
* 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
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Pivotal, Inc. - initial API and implementation
*******************************************************************************/
package org.springframework.ide.vscode.commons.languageserver.util;
import java.util.List;
import java.util.concurrent.CompletableFuture;
import org.eclipse.lsp4j.Location;
import org.eclipse.lsp4j.ReferenceParams;
@FunctionalInterface
public interface ReferencesHandler {
CompletableFuture<List<? extends Location>> handle(ReferenceParams params);
}

12
vscode-extensions/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/SimpleTextDocumentService.java
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@@ -74,6 +74,7 @@ public class SimpleTextDocumentService implements TextDocumentService {
private HoverHandler hoverHandler = null;
private DefinitionHandler definitionHandler;
private ReferencesHandler referencesHandler;
public SimpleTextDocumentService(SimpleLanguageServer server) {
this.server = server;
@@ -99,6 +100,11 @@ public class SimpleTextDocumentService implements TextDocumentService {
this.definitionHandler = h;
}
public synchronized void onRefeences(ReferencesHandler h) {
Assert.isNull("A references handler is already set, multiple handlers not supported yet", referencesHandler);
this.referencesHandler = h;
}
/**
* Gets all documents this service is tracking, generally these are the documents that have been opened / changed,
* and not yet closed.
@@ -204,8 +210,8 @@ public class SimpleTextDocumentService implements TextDocumentService {
}
public final static CompletionList NO_COMPLETIONS = new CompletionList(false, Collections.emptyList());
public final static CompletableFuture<Hover> NO_HOVER = CompletableFuture.completedFuture(new Hover(ImmutableList.of(), null));
public final static CompletableFuture<List<? extends Location>> NO_REFERENCES = CompletableFuture.completedFuture(ImmutableList.of());
@Override
public CompletableFuture<Either<List<CompletionItem>, CompletionList>> completion(TextDocumentPositionParams position) {
@@ -253,6 +259,10 @@ public class SimpleTextDocumentService implements TextDocumentService {
@Override
public CompletableFuture<List<? extends Location>> references(ReferenceParams params) {
ReferencesHandler h = this.referencesHandler;
if (h != null) {
return h.handle(params);
}
return CompletableFuture.completedFuture(Collections.emptyList());
}