added project structure for spring boot java language server

vscode-extensions/vscode-boot-java/src/main/java/org/springframework/ide/vscode/boot/java/BootJavaLanguageServer.java

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+/*******************************************************************************
+ * Copyright (c) 2016 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.boot.java;
+
+import org.eclipse.lsp4j.CompletionOptions;
+import org.eclipse.lsp4j.ServerCapabilities;
+import org.eclipse.lsp4j.TextDocumentSyncKind;
+import org.springframework.ide.vscode.boot.java.completions.BootJavaCompletionEngine;
+import org.springframework.ide.vscode.boot.java.completions.BootJavaReconcileEngine;
+import org.springframework.ide.vscode.commons.languageserver.completion.ICompletionEngine;
+import org.springframework.ide.vscode.commons.languageserver.completion.VscodeCompletionEngineAdapter;
+import org.springframework.ide.vscode.commons.languageserver.java.DefaultJavaProjectFinder;
+import org.springframework.ide.vscode.commons.languageserver.java.IJavaProjectFinderStrategy;
+import org.springframework.ide.vscode.commons.languageserver.java.JavaProjectFinder;
+import org.springframework.ide.vscode.commons.languageserver.reconcile.IReconcileEngine;
+import org.springframework.ide.vscode.commons.languageserver.util.SimpleLanguageServer;
+import org.springframework.ide.vscode.commons.languageserver.util.SimpleTextDocumentService;
+import org.springframework.ide.vscode.commons.maven.JavaProjectWithClasspathFileFinderStrategy;
+import org.springframework.ide.vscode.commons.maven.MavenProjectFinderStrategy;
+import org.springframework.ide.vscode.commons.util.text.TextDocument;
+
+/**
+ * Language Server for Spring Boot Application Properties files
+ * 
+ * @author Martin Lippert
+ */
+public class BootJavaLanguageServer extends SimpleLanguageServer {
+	
+	public static final JavaProjectFinder DEFAULT_PROJECT_FINDER = new DefaultJavaProjectFinder(new IJavaProjectFinderStrategy[] {
+			new MavenProjectFinderStrategy(),
+			new JavaProjectWithClasspathFileFinderStrategy()
+	});
+
+	private final JavaProjectFinder javaProjectFinder;
+	private final VscodeCompletionEngineAdapter completionEngine;
+	
+	public BootJavaLanguageServer(JavaProjectFinder javaProjectFinder) {
+		this.javaProjectFinder = javaProjectFinder;
+		SimpleTextDocumentService documents = getTextDocumentService();
+
+		IReconcileEngine reconcileEngine = new BootJavaReconcileEngine();
+		documents.onDidChangeContent(params -> {
+			TextDocument doc = params.getDocument();
+			validateWith(doc, reconcileEngine);
+		});
+		
+		ICompletionEngine bootCompletionEngine = new BootJavaCompletionEngine();
+		completionEngine = new VscodeCompletionEngineAdapter(this, bootCompletionEngine);
+		completionEngine.setMaxCompletionsNumber(100);
+		documents.onCompletion(completionEngine::getCompletions);
+		documents.onCompletionResolve(completionEngine::resolveCompletion);
+	}
+
+	public void setMaxCompletionsNumber(int number) {
+		completionEngine.setMaxCompletionsNumber(number);
+	}
+	
+	@Override
+	protected ServerCapabilities getServerCapabilities() {
+		ServerCapabilities c = new ServerCapabilities();
+		
+		c.setTextDocumentSync(TextDocumentSyncKind.Incremental);
+		CompletionOptions completionProvider = new CompletionOptions();
+		completionProvider.setResolveProvider(false);
+		c.setCompletionProvider(completionProvider);
+		
+		return c;
+	}
+	
+}

vscode-extensions/vscode-boot-java/src/main/java/org/springframework/ide/vscode/boot/java/Main.java

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+/*******************************************************************************
+ * Copyright (c) 2016 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.boot.java;
+
+import java.io.IOException;
+
+import org.springframework.ide.vscode.commons.languageserver.LaunguageServerApp;
+import org.springframework.ide.vscode.commons.languageserver.java.JavaProjectFinder;
+import org.springframework.ide.vscode.commons.languageserver.util.SimpleLanguageServer;
+
+/**
+ * Starts up Language Server process
+ * 
+ * @author Martin Lippert
+ */
+public class Main {
+		
+	public static void main(String[] args) throws IOException {
+		LaunguageServerApp.start(() -> {
+			JavaProjectFinder javaProjectFinder = BootJavaLanguageServer.DEFAULT_PROJECT_FINDER;
+			SimpleLanguageServer server = new BootJavaLanguageServer(javaProjectFinder);
+			return server;
+		});
+	}
+
+}

vscode-extensions/vscode-boot-java/src/main/java/org/springframework/ide/vscode/boot/java/completions/BootJavaCompletionEngine.java

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+package org.springframework.ide.vscode.boot.java.completions;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.List;
+
+import org.eclipse.lsp4j.CompletionItemKind;
+import org.springframework.ide.vscode.commons.languageserver.completion.DocumentEdits;
+import org.springframework.ide.vscode.commons.languageserver.completion.ICompletionEngine;
+import org.springframework.ide.vscode.commons.languageserver.completion.ICompletionProposal;
+import org.springframework.ide.vscode.commons.util.Renderable;
+import org.springframework.ide.vscode.commons.util.Renderables;
+import org.springframework.ide.vscode.commons.util.text.IDocument;
+
+public class BootJavaCompletionEngine implements ICompletionEngine {
+
+	@Override
+	public Collection<ICompletionProposal> getCompletions(IDocument document, int offset) throws Exception {
+		List<ICompletionProposal> completions = new ArrayList<>();
+		
+		ICompletionProposal proposal = new ICompletionProposal() {
+			
+			@Override
+			public DocumentEdits getTextEdit() {
+				DocumentEdits edits = new DocumentEdits(document);
+				edits.insert(0, "my noew java code from spring boot completions!!!");
+				
+				return edits;
+			}
+			
+			@Override
+			public String getLabel() {
+				return "Do a great Spring Boot Java Code completion";
+			}
+			
+			@Override
+			public CompletionItemKind getKind() {
+				return CompletionItemKind.Text;
+			}
+			
+			@Override
+			public Renderable getDocumentation() {
+				return Renderables.text("this describes the Boot Java completion in more detail");
+			}
+			
+			@Override
+			public String getDetail() {
+				return "and here are the details";
+			}
+			
+			@Override
+			public ICompletionProposal deemphasize() {
+				return null;
+			}
+		};
+		
+		completions.add(proposal);
+		
+		return completions;
+	}
+
+}

vscode-extensions/vscode-boot-java/src/main/java/org/springframework/ide/vscode/boot/java/completions/BootJavaReconcileEngine.java

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+package org.springframework.ide.vscode.boot.java.completions;
+
+import org.springframework.ide.vscode.commons.languageserver.reconcile.IProblemCollector;
+import org.springframework.ide.vscode.commons.languageserver.reconcile.IReconcileEngine;
+import org.springframework.ide.vscode.commons.util.text.IDocument;
+
+public class BootJavaReconcileEngine implements IReconcileEngine {
+
+	@Override
+	public void reconcile(IDocument doc, IProblemCollector problemCollector) {
+	}
+
+}