internal static ExpressionEvaluatorDispatcher Create(Microsoft.VisualStudio.Shell.Interop.IVsDebugger vsDebugger,
IExpressionEvaluatorContainer container,
IExpressionsCache expressionCache)
{
ExpressionEvaluatorDispatcher result = new ExpressionEvaluatorDispatcher(container, expressionCache);
uint debugEventsCookie = VSConstants.VSCOOKIE_NIL;
result._debuggerEvents = new DebuggerEvents(vsDebugger);
result._debuggerEvents.OnEnterBreakMode += result.OnEnterBreakMode;
result._debuggerEvents.OnEnterDesignMode += result.debuggerSink_OnEnterDesignMode;
vsDebugger.AdviseDebuggerEvents(result._debuggerEvents, out debugEventsCookie).ThrowOnFailure();
return(result);
}
/// <summary>This method checks to see if the IVsDebugger is running, and if so,
/// calls it to get additional information about the current token and returns a combined result.
/// You can return an HRESULT here like TipSuccesses2.TIP_S_NODEFAULTTIP.</summary>
public override int GetFullDataTipText(string textValue, TextSpan ts, out string fullTipText)
{
IVsTextLines textLines;
fullTipText = textValue;
ErrorHandler.ThrowOnFailure(this.TextView.GetBuffer(out textLines));
// Now, check if the debugger is running and has anything to offer
try
{
Microsoft.VisualStudio.Shell.Interop.IVsDebugger debugger = Source.LanguageService.GetIVsDebugger();
if (debugger != null && Source.LanguageService.IsDebugging)
{
var tsdeb = new TextSpan[1] {
new TextSpan()
};
if (!TextSpanHelper.IsEmpty(ts))
{
// While debugging we always want to evaluate the expression user is hovering over
ErrorHandler.ThrowOnFailure(TextView.GetWordExtent(ts.iStartLine, ts.iStartIndex, (uint)WORDEXTFLAGS.WORDEXT_FINDEXPRESSION, tsdeb));
// If it failed to find something, then it means their is no expression so return S_FALSE
if (TextSpanHelper.IsEmpty(tsdeb[0]))
{
return(NativeMethods.S_FALSE);
}
}
string debugTextTip = null;
int hr = debugger.GetDataTipValue(textLines, tsdeb, null, out debugTextTip);
fullTipText = debugTextTip;
if (hr == (int)TipSuccesses2.TIP_S_NODEFAULTTIP)
{
return(hr);
}
if (!string.IsNullOrEmpty(debugTextTip) && debugTextTip != textValue)
{
// The debugger in this case returns "=value [type]" which we can
// append to the variable name so we get "x=value[type]" as the full tip.
int i = debugTextTip.IndexOf('=');
if (i >= 0)
{
string spacer = (i < debugTextTip.Length - 1 && debugTextTip[i + 1] == ' ') ? " " : "";
fullTipText = textValue + spacer + debugTextTip.Substring(i);
}
}
}
#if LANGTRACE
} catch (COMException e) {
Trace.WriteLine("COMException: GetDataTipValue, errorcode=" + e.ErrorCode);
#else
}
catch (System.Runtime.InteropServices.COMException)
{
#endif
}
if (string.IsNullOrEmpty(fullTipText))
{
fullTipText = textValue;
}
return(NativeMethods.S_OK);
}
