/// <summary>
/// Tries to parse a StackFrame following convention from Environment.StackTrace
/// https://docs.microsoft.com/en-us/dotnet/api/system.environment.stacktrace has
/// details on output format and expected strings
///
/// Example:
/// at ConsoleApp4.MyClass.M() in C:\repos\ConsoleApp4\ConsoleApp4\Program.cs:line 26
/// </summary>
public bool TryParseLine(string line, [NotNullWhen(true)] out ParsedFrame?parsedFrame)
{
parsedFrame = null;
if (!line.Trim().StartsWith(StackTraceAtStart))
{
return(false);
}
var success = StackFrameParserHelpers.TryParseMethodSignature(line.AsSpan(), out var classSpan, out var methodSpan, out var argsSpan);
if (!success)
{
return(false);
}
var splitIndex = line.IndexOf(StackTraceSymbolAndFileSplit);
// The line has " in <filename>:line <line number>"
if (splitIndex > 0)
{
var fileInformationStart = splitIndex + StackTraceSymbolAndFileSplit.Length;
var fileInformationSpan = new TextSpan(fileInformationStart, line.Length - fileInformationStart);
parsedFrame = new ParsedStackFrame(line, classSpan, methodSpan, argsSpan, fileInformationSpan);
return(true);
}
parsedFrame = new ParsedStackFrame(line, classSpan, methodSpan, argsSpan);
return(true);
}
public bool TryParseLine(string line, [NotNullWhen(true)] out ParsedFrame?parsedFrame)
{
// Example line:
// ConsoleApp4.dll!ConsoleApp4.MyClass.ThrowAtOne() Line 19 C#
// |--------------------------------|
// Symbol data we care about
parsedFrame = null;
// +1 here because we always want to skip the '!' character
var startPoint = line.IndexOf('!') + 1;
if (startPoint == 0 || startPoint == line.Length)
{
return(false);
}
var success = StackFrameParserHelpers.TryParseMethodSignature(line.AsSpan().Slice(startPoint), out var classSpan, out var methodSpan, out var argsSpan);
if (!success)
{
return(false);
}
// The spans need to be fixed up by the start point since we didn't
// pass everyting from '!' and before to the parser
classSpan = new TextSpan(classSpan.Start + startPoint, classSpan.Length);
methodSpan = new TextSpan(methodSpan.Start + startPoint, methodSpan.Length);
argsSpan = new TextSpan(argsSpan.Start + startPoint, argsSpan.Length);
parsedFrame = new ParsedStackFrame(line, classSpan, methodSpan, argsSpan);
return(true);
}
/// <summary>
/// Uses <see cref="StackFrameParser"/> to parse a line if possible
/// </summary>
public bool TryParseLine(string line, [NotNullWhen(true)] out ParsedFrame?parsedFrame)
{
parsedFrame = null;
var tree = StackFrameParser.TryParse(line);
if (tree is null)
{
return(false);
}
parsedFrame = new ParsedStackFrame(tree);
return(true);
}
public bool TryParseLine(VirtualCharSequence line, [NotNullWhen(true)] out ParsedFrame?parsedFrame)
{
// Example line:
// ConsoleApp4.dll!ConsoleApp4.MyClass.ThrowAtOne() Line 19 C#
// |--------------------------------|
// Symbol data we care about
parsedFrame = null;
var startPoint = -1;
for (var i = 0; i < line.Length; i++)
{
if (line[i].Value == '!')
{
// +1 here because we always want to skip the '!' character
startPoint = i + 1;
break;
}
}
if (startPoint <= 0 || startPoint == line.Length)
{
return(false);
}
var textToParse = line.GetSubSequence(TextSpan.FromBounds(startPoint, line.Length));
var tree = StackFrameParser.TryParse(textToParse);
if (tree is null)
{
return(false);
}
parsedFrame = new ParsedStackFrame(tree);
return(true);
}