PT #151978919 VSCode navigation to resource from hovers (POC)

headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/JandexClasspath.java

@@ -1,7 +1,18 @@
+/*******************************************************************************
+ * Copyright (c) 2017, 2018 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.jandex;
 
 import java.io.File;
 import java.nio.file.Path;
+import java.util.Optional;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
@@ -17,6 +28,12 @@ import com.google.common.base.Suppliers;
 import reactor.core.publisher.Flux;
 import reactor.util.function.Tuple2;
 
+/**
+ * Classpath with Jandex Java index for searching types
+ * 
+ * @author Alex Boyko
+ *
+ */
 public abstract class JandexClasspath implements IClasspath {
 	
 	public static JavadocProviderTypes providerType = JavadocProviderTypes.HTML;
@@ -81,6 +98,11 @@ public abstract class JandexClasspath implements IClasspath {
 		return JandexIndex.getIndexFolder();
 	}
 	
+	@Override
+	public Optional<File> findClasspathResourceContainer(String fqName) {
+		return javaIndex.get().findClasspathResourceForType(fqName);
+	}
+
 	abstract protected IJavadocProvider createParserJavadocProvider(File classpathResource);
 	
 	abstract protected IJavadocProvider createHtmlJavdocProvider(File classpathResource);

headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/jandex/JandexIndex.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2016-2017 Pivotal, Inc.
+ * Copyright (c) 2016, 2018 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
@@ -227,6 +227,27 @@ public class JandexIndex {
 										.orElse(null));
 
 	}
+	
+	private Optional<Tuple2<File, ClassInfo>> findMatch(DotName fqName) {
+		return (baseIndex == null ? Stream.<Optional<Tuple2<File, ClassInfo>>>empty()
+				: Arrays.stream(
+						baseIndex)
+						.filter(
+								jandexIndex -> jandexIndex != null)
+						.map(jandexIndex -> jandexIndex.findMatch(fqName))).filter(o -> o.isPresent())
+								.findFirst()
+								// If not found look at indices owned by this
+								// JandexIndex instance
+								.orElseGet(() -> streamOfIndices()
+										.map(e -> Tuples.of(e.getT1(), Optional.ofNullable(e.getT2().getClassByName(fqName))))
+										.filter(t -> t.getT2().isPresent())
+										.map(e -> Tuples.of(e.getT1(), e.getT2().get())).findFirst());
+	}
+	
+	public Optional<File> findClasspathResourceForType(String fqName) {
+		Optional<Tuple2<File, ClassInfo>> match = findMatch(DotName.createSimple(fqName));
+		return Optional.ofNullable(match.isPresent() ? match.get().getT1() : null);
+	}
 
 	private IType createType(Tuple2<File, ClassInfo> match) {
 		File classpathResource = match.getT1();

headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/java/DelegatingCachedClasspath.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2017 Pivotal, Inc.
+ * Copyright (c) 2017, 2018 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
@@ -18,6 +18,7 @@ import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.Collections;
 import java.util.LinkedHashSet;
+import java.util.Optional;
 import java.util.Set;
 import java.util.concurrent.Callable;
 import java.util.concurrent.atomic.AtomicReference;
@@ -255,5 +256,17 @@ public class DelegatingCachedClasspath<T extends IClasspath> implements IClasspa
 					new LinkedHashSet<>(newDelegate.getClasspathResources()), newDelegate.getOutputFolder());
 		}
 	}
+
+	@Override
+	public ImmutableList<String> getSourceFolders() {
+		T t = cachedDelegate.get();
+		return t == null ? ImmutableList.of() : t.getSourceFolders();
+	}
+
+	@Override
+	public Optional<File> findClasspathResourceContainer(String fqName) {
+		T t = cachedDelegate.get();
+		return t == null ? Optional.empty() : t.findClasspathResourceContainer(fqName);
+	}
 	
 }

headless-services/commons/commons-java/src/main/java/org/springframework/ide/vscode/commons/java/IClasspath.java

@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2016 Pivotal, Inc.
+ * Copyright (c) 2016, 2018 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
@@ -10,7 +10,9 @@
  *******************************************************************************/
 package org.springframework.ide.vscode.commons.java;
 
+import java.io.File;
 import java.nio.file.Path;
+import java.util.Optional;
 import java.util.function.Predicate;
 
 import com.google.common.collect.ImmutableList;
@@ -54,5 +56,9 @@ public interface IClasspath {
 	 * @return classpath resource relative paths
 	 */
 	ImmutableList<String> getClasspathResources();
+	
+	ImmutableList<String> getSourceFolders();
+	
+	Optional<File> findClasspathResourceContainer(String fqName);
 
 }