Bug 54094 Assertion failed in auto indent strategy
(in HEAD) The snippet editor subclasses the JavaSourceViewerConfiguration, and inherits its autoindent strategy. This is causing the following exception, when I attempt to enter a carriage return at the end of a snippet editor. For example, my editor cantained the following text. Placing the cursor at the end and pressing 'Enter' results in the stack trace. Should we not use the indent strategy? or can JUI allow us to continue using it? java.util.Vector v = null; v.add("Sam"); for (int i = 0; i < 100; i++) { } v.toString() org.eclipse.jface.text.Assert$AssertionFailedException: Assertion failed: at org.eclipse.jface.text.Assert.isTrue(Assert.java:175) at org.eclipse.jface.text.Assert.isTrue(Assert.java:160) at org.eclipse.jdt.internal.ui.text.JavaHeuristicScanner.scanForward (JavaHeuristicScanner.java:638) at org.eclipse.jdt.internal.ui.text.JavaHeuristicScanner.findNonWhitespaceForwardI nAnyPartition(JavaHeuristicScanner.java:607) at org.eclipse.jdt.internal.ui.text.JavaIndenter.skipToPreviousListItemOrListStart (JavaIndenter.java:759) at org.eclipse.jdt.internal.ui.text.JavaIndenter.findReferencePosition (JavaIndenter.java:559) at org.eclipse.jdt.internal.ui.text.JavaIndenter.findReferencePosition (JavaIndenter.java:405) at org.eclipse.jdt.internal.ui.text.JavaIndenter.getReferenceIndentation (JavaIndenter.java:105) at org.eclipse.jdt.internal.ui.text.JavaIndenter.computeIndentation (JavaIndenter.java:138) at org.eclipse.jdt.internal.ui.text.JavaIndenter.computeIndentation (JavaIndenter.java:124) at org.eclipse.jdt.internal.ui.text.java.JavaAutoIndentStrategy.smartIndentAfterNe wLine(JavaAutoIndentStrategy.java:261) at org.eclipse.jdt.internal.ui.text.java.JavaAutoIndentStrategy.customizeDocumentC ommand(JavaAutoIndentStrategy.java:996) at org.eclipse.jface.text.TextViewer.customizeDocumentCommand (TextViewer.java:3132) at org.eclipse.jface.text.TextViewer.handleVerifyEvent (TextViewer.java:3160) at org.eclipse.jface.text.TextViewer$TextVerifyListener.verifyText (TextViewer.java:322) at org.eclipse.swt.widgets.TypedListener.handleEvent (TypedListener.java:193) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:833) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:857) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:842) at org.eclipse.swt.widgets.Widget.notifyListeners(Widget.java:650) at org.eclipse.swt.custom.StyledText.modifyContent (StyledText.java:5951) at org.eclipse.swt.custom.StyledText.sendKeyEvent(StyledText.java:6935) at org.eclipse.swt.custom.StyledText.doContent(StyledText.java:2557) at org.eclipse.swt.custom.StyledText.handleKey(StyledText.java:5304) at org.eclipse.swt.custom.StyledText.handleKeyDown (StyledText.java:5327) at org.eclipse.swt.custom.StyledText$7.handleEvent (StyledText.java:5070) at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:82) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:833) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:857) at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:842) at org.eclipse.swt.widgets.Control.sendKeyEvent(Control.java:1716) at org.eclipse.swt.widgets.Control.sendKeyEvent(Control.java:1712) at org.eclipse.swt.widgets.Control.WM_CHAR(Control.java:3037) at org.eclipse.swt.widgets.Control.windowProc(Control.java:2940) at org.eclipse.swt.widgets.Display.windowProc(Display.java:2880) at org.eclipse.swt.internal.win32.OS.DispatchMessageW(Native Method) at org.eclipse.swt.internal.win32.OS.DispatchMessage(OS.java:1376) at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:2031) at org.eclipse.ui.internal.Workbench.runEventLoop(Workbench.java:1509) at org.eclipse.ui.internal.Workbench.runUI(Workbench.java:1480) at org.eclipse.ui.internal.Workbench.createAndRunWorkbench (Workbench.java:257) at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:139) at org.eclipse.ui.internal.ide.IDEApplication.run (IDEApplication.java:48) at org.eclipse.core.internal.runtime.PlatformActivator$1.run (PlatformActivator.java:260) at org.eclipse.core.runtime.adaptor.EclipseStarter.run (EclipseStarter.java:173) at org.eclipse.core.runtime.adaptor.EclipseStarter.run (EclipseStarter.java:106) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke (NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:324) at org.eclipse.core.launcher.Main.basicRun(Main.java:305) at org.eclipse.core.launcher.Main.run(Main.java:745) at org.eclipse.core.launcher.Main.main(Main.java:713)
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaIndenter.java
* 
	 * @param document the document to scan
	 * @param scanner the {@link JavaHeuristicScanner} to be used for scanning
	 * the document. It must be installed on the same <code>IDocument</code>.
	 */
	public JavaIndenter(IDocument document, JavaHeuristicScanner scanner) {
		Assert.isNotNull(document);
		Assert.isNotNull(scanner);
		fDocument= document;
		fScanner= scanner;
	}
	
	/**
	 * Computes the indentation at the reference point of <code>position</code>.
	 * 
	 * @param offset the offset in the document
	 * @return a String which reflects the indentation at the line in which the
	 *         reference position to <code>offset</code> resides, or <code>null</code>
	 *         if it cannot be determined
	 */
	public StringBuffer getReferenceIndentation(int offset) {
		return getReferenceIndentation(offset, false);
	}
	
	/**
	 * Computes the indentation at the reference point of <code>position</code>.
	 * 
	 * @param offset the offset in the document
	 * @param assumeOpeningBrace <code>true</code> if an opening brace should be assumed
	 * @return a String which reflects the indentation at the line in which the