public string ParseHistory(SourceCode sourceCode)
{
StringBuilder builder = new StringBuilder();
IEnumerable <ParsingResult> parsers = this.Parsers;
while (parsers.Any())
{
ParsingResult parser = parsers.Take(1).First();
IEnumerable <ParsingResult> parsersInSameLocation = parsers.TakeWhile(n => n.Location == parser.Location);
parsers = parsers.Skip(parsersInSameLocation.Count());
builder.AppendLine("==========");
foreach (ParsingResult result in parsersInSameLocation)
{
builder.AppendLine(result.ToString());
}
if (parser is SuccessfulParsingResult successfulResult)
{
builder.AppendLine(sourceCode.HighlightContext(successfulResult.Context));
}
else if (parser is FailedParsingResult failedResult)
{
builder.AppendLine(sourceCode.HighlightLocation(failedResult.Location));
}
else
{
throw new Exception("Unknown ParsingResult type");
}
}
return(builder.ToString());
}