Cleaner dependency injection for BootJavaLanguageServer

headless-services/commons/commons-language-server/src/main/java/org/springframework/ide/vscode/commons/languageserver/util/LSFactory.java

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+/*******************************************************************************
+ * 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;
+
+/**
+ * A factory that is aware of the language server context. Use this to inject
+ * dependencies into a {@link SimpleLanguageServer} implementation when the
+ * instantiation of the injected component itself depends on the language server (or
+ * some of its services).
+ *
+ * Note: It is starting to 'smell' like we should really be using some kind of dependency
+ * injection framework to deal with stuff like this.
+ */
+@FunctionalInterface
+public interface LSFactory<T> {
+	T create(SimpleLanguageServer server);
+}