Open method/class declaration fails #217
Description
I installed STS4 on a fresh installation of eclipse and I'm not able to CTRL+CLICK on a variable, method or class that is located inside a class that belongs to one of my Maven Dependencies. I can do it if the file is located in the src folder. The real example is, my main.java class is located in the src folder. In this class I have the following code:
SpringApplication.run(CryptoBotApplication.class, args);
I can CTRL+CLICK on SpringApplication and this will open a new tab with SpringApplication class which belongs to one of my maven dependencies. Within that class, CTRL+CLICK doesn't work on any variable, method or class. It doesn't even show me the popup with the options Open Declaration and Open Implementation. If I press the keyboard shortcut F3, it goes to the declaration of the variable, method or class.
In eclipse logs, every time I try CTRL+CLICK and it fails, I get the following logs:
!ENTRY org.eclipse.ui 4 0 2019-03-14 18:46:56.436 !MESSAGE Unhandled event loop exception !STACK 0 java.lang.NullPointerException at org.eclipse.lsp4e.operations.declaration.OpenDeclarationHyperlinkDetector.detectHyperlinks(OpenDeclarationHyperlinkDetector.java:79) at org.eclipse.ui.texteditor.HyperlinkDetectorRegistry$HyperlinkDetectorDelegate.detectHyperlinks(HyperlinkDetectorRegistry.java:81) at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:289) at org.eclipse.jface.text.hyperlink.HyperlinkManager.findHyperlinks(HyperlinkManager.java:262) at org.eclipse.jface.text.hyperlink.HyperlinkManager.mouseMove(HyperlinkManager.java:457) at org.eclipse.swt.widgets.TypedListener.handleEvent(TypedListener.java:216) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:89) at org.eclipse.swt.widgets.Display.sendEvent(Display.java:4131) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:1055) at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3944) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3547) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$5.run(PartRenderingEngine.java:1173) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1062) at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:156) at org.eclipse.ui.internal.Workbench.lambda$3(Workbench.java:636) at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:339) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:563) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:151) at org.eclipse.ui.internal.ide.application.IDEApplication.start(IDEApplication.java:155) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:137) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:107) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:400) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:659) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:595) at org.eclipse.equinox.launcher.Main.run(Main.java:1501)
Just to troubleshoot this, I did another fresh install of eclipse and with an empty workspace and once I install STS4, this happens!
Eclipse and OS details:
Version: 2018-12 (4.10.0)
Build id: 20181214-0600
Windows 10 Build 18305