/// <summary>
/// Formats the value for display in the debugger, e.g. for the Value column in the Watch
/// window. Mostly based on the Natvis <DisplayString> nodes.
/// </summary>
internal async Task <string> FormatDisplayStringAsync(IVariableInformation variable)
{
try
{
return(await FormatDisplayStringAsync(
BuildFormatStringContext <DisplayStringType>(
variable, e => new DisplayStringElement(e)), variable));
}
catch (ExpressionEvaluationFailed ex)
{
_logger.Log(NatvisLoggingLevel.ERROR,
$"Failed to format natvis display string. Reason: {ex.Message}.");
return(await variable.ValueAsync());
}
}
public static ErrorVariableInformation LogAndGetExpandChildrenValidationError(
NatvisLoggingLevel loggingLevel, NatvisDiagnosticLogger logger, string visualizerName,
string typeName, string errorCause)
{
string errMessage = $"(Natvis) Failed to expand {visualizerName} node for type " +
$"'{typeName}'. Reason: {errorCause}.";
logger.Log(loggingLevel, errMessage);
return(new ErrorVariableInformation("<Error>", errMessage));
}
/// <summary>
/// Writes a log to Trace and this.logger.
/// </summary>
void TraceWriteLine(NatvisLoggingLevel level, string message)
{
if (_logger.ShouldLog(level))
{
_logger.Log(level, message);
}
else
{
string traceMsg = message;
if (level == NatvisLoggingLevel.ERROR)
{
traceMsg = "ERROR: " + message;
}
Trace.WriteLine(traceMsg);
}
}