refact: use var keyword for direct casts and assignment of new objects

org.eclipse.lsp4j.debug/src/main/java/org/eclipse/lsp4j/debug/adapters/RestartArgumentsArgumentsTypeAdapter.java

@@ -1,26 +1,23 @@
 /******************************************************************************
  * Copyright (c) 2022 itemis AG and others.
- * 
+ *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0,
  * or the Eclipse Distribution License v. 1.0 which is available at
  * http://www.eclipse.org/org/documents/edl-v10.php.
- * 
+ *
  * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
  ******************************************************************************/
 package org.eclipse.lsp4j.debug.adapters;
 
-import java.util.function.Predicate;
-
 import org.eclipse.lsp4j.debug.AttachRequestArguments;
 import org.eclipse.lsp4j.debug.LaunchRequestArguments;
 import org.eclipse.lsp4j.jsonrpc.json.adapters.EitherTypeAdapter;
 import org.eclipse.lsp4j.jsonrpc.json.adapters.EitherTypeAdapter.PropertyChecker;
 import org.eclipse.lsp4j.jsonrpc.messages.Either;
 
 import com.google.gson.Gson;
-import com.google.gson.JsonElement;
 import com.google.gson.TypeAdapter;
 import com.google.gson.TypeAdapterFactory;
 import com.google.gson.reflect.TypeToken;
@@ -33,10 +30,9 @@ public class RestartArgumentsArgumentsTypeAdapter implements TypeAdapterFactory
 	@SuppressWarnings("unchecked")
 	@Override
 	public <T> TypeAdapter<T> create(Gson gson, TypeToken<T> type) {
-		Predicate<JsonElement> leftChecker = new PropertyChecker("noDebug");
-		Predicate<JsonElement> rightChecker = leftChecker.negate();
-		TypeAdapter<Either<LaunchRequestArguments, AttachRequestArguments>> elementTypeAdapter = new EitherTypeAdapter<>(
-				gson, ELEMENT_TYPE, leftChecker, rightChecker);
+	   final var leftChecker = new PropertyChecker("noDebug");
+	   final var rightChecker = leftChecker.negate();
+	   final var elementTypeAdapter = new EitherTypeAdapter<>(gson, ELEMENT_TYPE, leftChecker, rightChecker);
 		return (TypeAdapter<T>) elementTypeAdapter;
 	}
 

org.eclipse.lsp4j.jsonrpc.debug/src/main/java/org/eclipse/lsp4j/jsonrpc/debug/adapters/DebugMessageTypeAdapter.java

@@ -1,12 +1,12 @@
 /******************************************************************************
  * Copyright (c) 2017 Kichwa Coders Ltd. and others.
- * 
+ *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0,
  * or the Eclipse Distribution License v. 1.0 which is available at
  * http://www.eclipse.org/org/documents/edl-v10.php.
- * 
+ *
  * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
  ******************************************************************************/
 package org.eclipse.lsp4j.jsonrpc.debug.adapters;
@@ -329,7 +329,7 @@ protected Object parseBody(Object rawBody, String messageType, int request_seq,
 			if (!(rawBody instanceof JsonElement)) {
 				return rawBody;
 			}
-			JsonElement rawJsonParams = (JsonElement) rawBody;
+			final var rawJsonParams = (JsonElement) rawBody;
 			return fromJson(rawJsonParams, Object.class);
 		}
 		return rawBody;
@@ -388,7 +388,7 @@ private Message createMessage(String messageType, int seq, int request_seq, Stri
 								Type returnType = jsonRpcMethod.getReturnType();
 								if (jsonRpcMethod.getReturnTypeAdapterFactory() != null)
 									typeAdapter = jsonRpcMethod.getReturnTypeAdapterFactory().create(gson, TypeToken.get(returnType));
-								JsonElement jsonElement = (JsonElement) body;
+								final var jsonElement = (JsonElement) body;
 								if (typeAdapter != null)
 									body = typeAdapter.fromJsonTree(jsonElement);
 								else
@@ -410,7 +410,7 @@ private Message createMessage(String messageType, int seq, int request_seq, Stri
 	public void write(JsonWriter out, Message message) throws IOException {
 		out.beginObject();
 		if (message instanceof DebugRequestMessage) {
-			DebugRequestMessage requestMessage = (DebugRequestMessage) message;
+			final var requestMessage = (DebugRequestMessage) message;
 			out.name("type");
 			out.value("request");
 			out.name("seq");
@@ -419,11 +419,11 @@ public void write(JsonWriter out, Message message) throws IOException {
 			out.value(requestMessage.getMethod());
 			Object params = requestMessage.getParams();
 			if (params != null) {
-				out.name("arguments");		
+				out.name("arguments");
 				gson.toJson(params, params.getClass(), out);
 			}
 		} else if (message instanceof DebugResponseMessage) {
-			DebugResponseMessage responseMessage = (DebugResponseMessage) message;
+			final var responseMessage = (DebugResponseMessage) message;
 			out.name("type");
 			out.value("response");
 			out.name("seq");
@@ -458,7 +458,7 @@ public void write(JsonWriter out, Message message) throws IOException {
 				}
 			}
 		} else if (message instanceof DebugNotificationMessage) {
-			DebugNotificationMessage notificationMessage = (DebugNotificationMessage) message;
+			final var notificationMessage = (DebugNotificationMessage) message;
 			out.name("type");
 			out.value("event");
 			out.name("seq");

org.eclipse.lsp4j.jsonrpc.debug/src/main/java/org/eclipse/lsp4j/jsonrpc/debug/messages/DebugNotificationMessage.java

@@ -1,12 +1,12 @@
 /******************************************************************************
  * Copyright (c) 2017 Kichwa Coders Ltd. and others.
- * 
+ *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0,
  * or the Eclipse Distribution License v. 1.0 which is available at
  * http://www.eclipse.org/org/documents/edl-v10.php.
- * 
+ *
  * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
  ******************************************************************************/
 package org.eclipse.lsp4j.jsonrpc.debug.messages;
@@ -38,7 +38,7 @@ public String getId() {
 			return id.getRight().toString();
 		return null;
 	}
-	
+
 	@NonNull
 	public Either<String, Number> getRawId() {
 		return id;
@@ -47,11 +47,11 @@ public Either<String, Number> getRawId() {
 	public void setId(String id) {
 		this.id = Either.forLeft(id);
 	}
-	
+
 	public void setId(int id) {
 		this.id = Either.forRight(id);
 	}
-	
+
 	public void setRawId(@NonNull Either<String, Number> id) {
 		this.id = id;
 	}
@@ -66,7 +66,7 @@ public boolean equals(final Object obj) {
 			return false;
 		if (!super.equals(obj))
 			return false;
-		DebugNotificationMessage other = (DebugNotificationMessage) obj;
+		final var other = (DebugNotificationMessage) obj;
 		if (this.id == null) {
 			if (other.id != null)
 				return false;

org.eclipse.lsp4j.jsonrpc.debug/src/main/java/org/eclipse/lsp4j/jsonrpc/debug/messages/DebugResponseMessage.java

@@ -1,12 +1,12 @@
 /******************************************************************************
  * Copyright (c) 2017 Kichwa Coders Ltd. and others.
- * 
+ *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0,
  * or the Eclipse Distribution License v. 1.0 which is available at
  * http://www.eclipse.org/org/documents/edl-v10.php.
- * 
+ *
  * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
  ******************************************************************************/
 package org.eclipse.lsp4j.jsonrpc.debug.messages;
@@ -40,7 +40,7 @@ public String getResponseId() {
 			return responseId.getRight().toString();
 		return null;
 	}
-	
+
 	@NonNull
 	public Either<String, Number> getRawResponseId() {
 		return responseId;
@@ -49,11 +49,11 @@ public Either<String, Number> getRawResponseId() {
 	public void setResponseId(String id) {
 		this.responseId = Either.forLeft(id);
 	}
-	
+
 	public void setResponseId(int id) {
 		this.responseId = Either.forRight(id);
 	}
-	
+
 	public void setRawResponseId(@NonNull Either<String, Number> id) {
 		this.responseId = id;
 	}
@@ -83,7 +83,7 @@ public boolean equals(final Object obj) {
 			return false;
 		if (!super.equals(obj))
 			return false;
-		DebugResponseMessage other = (DebugResponseMessage) obj;
+		final var other = (DebugResponseMessage) obj;
 		if (this.responseId == null) {
 			if (other.responseId != null)
 				return false;

org.eclipse.lsp4j.jsonrpc.debug/src/test/java/org/eclipse/lsp4j/jsonrpc/debug/test/DebugRemoteEndpointTest.java

@@ -1,12 +1,12 @@
 /******************************************************************************
  * Copyright (c) 2016-2017 TypeFox and others.
- * 
+ *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0,
  * or the Eclipse Distribution License v. 1.0 which is available at
  * http://www.eclipse.org/org/documents/edl-v10.php.
- * 
+ *
  * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
  ******************************************************************************/
 package org.eclipse.lsp4j.jsonrpc.debug.test;
@@ -51,7 +51,7 @@ public void notify(String method, Object parameter) {
 
 		@Override
 		public CompletableFuture<Object> request(String method, Object parameter) {
-			CompletableFuture<Object> completableFuture = new CompletableFuture<Object>();
+			final var completableFuture = new CompletableFuture<>();
 			requests.put(new RequestMessage() {{
 				setMethod(method);
 				setParams(parameter);

org.eclipse.lsp4j.jsonrpc/src/main/java/org/eclipse/lsp4j/jsonrpc/CompletableFutures.java

@@ -1,12 +1,12 @@
 /******************************************************************************
  * Copyright (c) 2016 TypeFox and others.
- * 
+ *
  * This program and the accompanying materials are made available under the
  * terms of the Eclipse Public License v. 2.0 which is available at
  * http://www.eclipse.org/legal/epl-2.0,
  * or the Eclipse Distribution License v. 1.0 which is available at
  * http://www.eclipse.org/org/documents/edl-v10.php.
- * 
+ *
  * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
  ******************************************************************************/
 package org.eclipse.lsp4j.jsonrpc;
@@ -18,52 +18,52 @@
 
 public final class CompletableFutures {
 	private CompletableFutures() {}
-	
+
 	/**
 	 * A utility method to create a {@link CompletableFuture} with cancellation support.
-	 * 
+	 *
 	 * @param code a function that accepts a {@link CancelChecker} and returns the to be computed value
 	 * @return a future
 	 */
 	public static <R> CompletableFuture<R> computeAsync(Function<CancelChecker, R> code) {
-		CompletableFuture<CancelChecker> start = new CompletableFuture<>();
+		final var start = new CompletableFuture<CancelChecker>();
 		CompletableFuture<R> result = start.thenApplyAsync(code);
 		start.complete(new FutureCancelChecker(result));
 		return result;
 	}
-	
+
 	/**
 	 * A utility method to create a {@link CompletableFuture} with cancellation support.
-	 * 
+	 *
 	 * @param code a function that accepts a {@link CancelChecker} and returns the to be computed value
 	 * @return a future
 	 */
 	public static <R> CompletableFuture<R> computeAsync(Executor executor, Function<CancelChecker, R> code) {
-		CompletableFuture<CancelChecker> start = new CompletableFuture<>();
+		final var start = new CompletableFuture<CancelChecker>();
 		CompletableFuture<R> result = start.thenApplyAsync(code, executor);
 		start.complete(new FutureCancelChecker(result));
 		return result;
 	}
-	
+
 	public static class FutureCancelChecker implements CancelChecker {
-		
+
 		private final CompletableFuture<?> future;
-		
+
 		public FutureCancelChecker(CompletableFuture<?> future) {
 			this.future = future;
 		}
 
 		@Override
 		public void checkCanceled() {
-			if (future.isCancelled()) 
+			if (future.isCancelled())
 				throw new CancellationException();
 		}
-		
+
 		@Override
 		public boolean isCanceled() {
 			return future.isCancelled();
 		}
-		
+
 	}
-	
+
 }