Community
Participate
Working Groups
I have a class where I define a number of Pattern constants similar to this: // GET <type> <path>| <offset> <length> |<playerid>| private static final Pattern GET = Pattern .compile("(GET) (\\p{Upper}*) (.*)\\| (\\d+) (\\d+) .*", Pattern.DOTALL); This causes content assist (Ctrl-Space) to fail with an "Error Executing Command" dialog. The reason given in the dialog is "The command for the key you pressed failed" :-) If I comment out all the definitions content assist works properly again.
Created attachment 20764 [details] The failing class I've simply ripped out the offending class from my project and added it as a test case. You'll obviously get heaps of compilation errors, but should be able to reproduce the error like this: Try using content assist at "this." in line 89 (this.controller = controller;). It should fail. Now go to line 205 and comment out the Pattern variable definition in line 205 + 206. And go back and try content assist again. Now it works.
The error log had this to say: The command for the key you pressed failed java.lang.NegativeArraySizeException at org.eclipse.jdt.internal.compiler.parser.Scanner. getCurrentTokenSourceString(Scanner.java:501) at org.eclipse.jdt.internal.compiler.parser.Parser.consumeToken(Parser. java:6793) at org.eclipse.jdt.internal.codeassist.impl.AssistParser. consumeToken(AssistParser.java:666) at org.eclipse.jdt.internal.codeassist.complete.CompletionParser. consumeToken(CompletionParser.java:2235) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:8377) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:8560) at org.eclipse.jdt.internal.compiler.parser.Parser.parse(Parser.java:8525) at org.eclipse.jdt.internal.compiler.parser.Parser.dietParse(Parser.java: 7343) at org.eclipse.jdt.internal.codeassist.complete.CompletionParser. dietParse(CompletionParser.java:2905) at org.eclipse.jdt.internal.codeassist.CompletionEngine. complete(CompletionEngine.java:1057) at org.eclipse.jdt.internal.core.Openable.codeComplete(Openable.java:119) at org.eclipse.jdt.internal.core.CompilationUnit. codeComplete(CompilationUnit.java:300) at org.eclipse.jdt.internal.core.CompilationUnit. codeComplete(CompilationUnit.java:293) at org.eclipse.jdt.internal.ui.text.java.JavaCompletionProcessor. internalComputeCompletionProposals(JavaCompletionProcessor.java:335) at org.eclipse.jdt.internal.ui.text.java.JavaCompletionProcessor. computeCompletionProposals(JavaCompletionProcessor.java:313) at org.eclipse.jface.text.contentassist.ContentAssistant. computeCompletionProposals(ContentAssistant.java:1470) at org.eclipse.jface.text.contentassist.CompletionProposalPopup. computeProposals(CompletionProposalPopup.java:250) at org.eclipse.jface.text.contentassist.CompletionProposalPopup. access$7(CompletionProposalPopup.java:247) at org.eclipse.jface.text.contentassist.CompletionProposalPopup$1. run(CompletionProposalPopup.java:206) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69) at org.eclipse.jface.text.contentassist.CompletionProposalPopup. showProposals(CompletionProposalPopup.java:201) at org.eclipse.jface.text.contentassist.ContentAssistant. showPossibleCompletions(ContentAssistant.java:1319) at org.eclipse.jdt.internal.ui.javaeditor. CompilationUnitEditor$AdaptedSourceViewer.doOperation(CompilationUnitEditor. java:183) at org.eclipse.ui.texteditor.ContentAssistAction$1. run(ContentAssistAction.java:82) at org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:69) at org.eclipse.ui.texteditor.ContentAssistAction.run(ContentAssistAction. java:80) at org.eclipse.jface.action.Action.runWithEvent(Action.java:996) at org.eclipse.ui.commands.ActionHandler.execute(ActionHandler.java:182) at org.eclipse.ui.internal.handlers.LegacyHandlerWrapper. execute(LegacyHandlerWrapper.java:108) at org.eclipse.core.commands.Command.execute(Command.java:331) at org.eclipse.core.commands.ParameterizedCommand. execute(ParameterizedCommand.java:396) at org.eclipse.ui.internal.keys.WorkbenchKeyboard. executeCommand(WorkbenchKeyboard.java:452) at org.eclipse.ui.internal.keys.WorkbenchKeyboard.press(WorkbenchKeyboard. java:741) at org.eclipse.ui.internal.keys.WorkbenchKeyboard. processKeyEvent(WorkbenchKeyboard.java:784) at org.eclipse.ui.internal.keys.WorkbenchKeyboard. filterKeySequenceBindings(WorkbenchKeyboard.java:543) at org.eclipse.ui.internal.keys.WorkbenchKeyboard. access$3(WorkbenchKeyboard.java:486) at org.eclipse.ui.internal.keys.WorkbenchKeyboard$KeyDownFilter. handleEvent(WorkbenchKeyboard.java:110) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82) at org.eclipse.swt.widgets.Display.filterEvent(Display.java:777) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:841) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:866) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:851) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:879) at org.eclipse.swt.widgets.Widget.sendKeyEvent(Widget.java:875) at org.eclipse.swt.widgets.Widget.wmChar(Widget.java:1182) at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:3126) at org.eclipse.swt.widgets.Control.windowProc(Control.java:3029) at org.eclipse.swt.widgets.Display.windowProc(Display.java:3466) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1625) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2525) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1570) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1534) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java: 306) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:143) at org.eclipse.ui.internal.ide.IDEApplication.run(IDEApplication.java:103) at org.eclipse.core.internal.runtime.PlatformActivator$1. run(PlatformActivator.java:228) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter. java:344) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter. java:156) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.eclipse.core.launcher.Main.invokeFramework(Main.java:315) at org.eclipse.core.launcher.Main.basicRun(Main.java:268) at org.eclipse.core.launcher.Main.run(Main.java:942) at org.eclipse.core.launcher.Main.main(Main.java:926) eclipse.buildId=I20050219-1500 java.version=1.5.0_01 java.vendor=Sun Microsystems Inc. BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=da_DK Command-line arguments: -os win32 -ws win32 -arch x86 -data c:\dev\workspace
Moving to core as the problem appears to be in the scanner.
*** This bug has been marked as a duplicate of 90414 ***
