protected virtual string TryExtractMethodNameFromFrame()

in src/SourceMapToolkit.CallstackDeminifier/StackTraceParser.cs [86:131]

41 lines of code
8 McCabe index (conditional complexity)


		protected virtual string TryExtractMethodNameFromFrame(string frame)
		{
			string methodName = null;

			// Firefox has stackframes in the form: "c@http://localhost:19220/crashcauser.min.js:1:34"
			int atSymbolIndex = frame.IndexOf("@http", StringComparison.Ordinal);
			if (atSymbolIndex != -1)
			{
				methodName = frame.Substring(0, atSymbolIndex).TrimStart();
			}
			else
			{
				// Chrome and IE11 have stackframes in the form: " at d (http://chrisgocallstack.azurewebsites.net/crashcauser.min.js:1:75)"
				int atStringIndex = frame.IndexOf("at ", StringComparison.Ordinal);
				if (atStringIndex != -1)
				{
					int httpIndex = frame.IndexOf(" (http", atStringIndex, StringComparison.Ordinal);
					if (httpIndex == -1)
					{
						httpIndex = frame.IndexOf(" http", atStringIndex, StringComparison.Ordinal);
						if (httpIndex != -1)
							httpIndex++;        // append one char to include a blank space to be able to replace "at " correctly
					}

					if (httpIndex != -1)
					{
						methodName = frame.Substring(atStringIndex, httpIndex - atStringIndex).Replace("at ", "").Trim();
					}
					else
					{
						var parenthesesIndex = frame.IndexOf(" (", atStringIndex, StringComparison.Ordinal);
						if (parenthesesIndex != -1)
						{
							methodName = frame.Substring(atStringIndex, parenthesesIndex - atStringIndex).Replace("at ", "").Trim();
						}
					}
				}
			}

			if (string.IsNullOrWhiteSpace(methodName))
			{
				methodName = null;
			}

			return methodName;
		}