internal static string ResolveExceptionMessage(LexerExceptionCodes code, int length)
{
switch (code)
{
case LexerExceptionCodes.InvalidEscapeSequence:
return("Invalid escape sequence '{0}'");
case LexerExceptionCodes.Unknown:
return("Unknown lexer error.");
case LexerExceptionCodes.UnexpectedEndOfStream:
return("Unexpected end of stream.");
case LexerExceptionCodes.UnexpectedSymbol:
return(length == 0 ? "Unexpected symbol." : "Unexpected symbol '{0}'.");
case LexerExceptionCodes.UnterminatedBlockComment:
return("Unterminated block comment.");
case LexerExceptionCodes.UnterminatedStringLiteral:
return("Unterminated string literal.");
case LexerExceptionCodes.UnterminatedStringContainer:
return("Unterminated string container.");
default:
throw new ArgumentOutOfRangeException(nameof(code), code, null);
}
}
private LexerException Exception(LexerExceptionCodes code, params object[] args)
{
var e = new LexerException(code, args);
if (!_recordPosition)
{
return(e);
}
e.HasMoreInformation = true;
e.ExceptionLine = _currentLine;
e.ExceptionColumn = _currentColumn;
e.ReferenceLine = _tokenLine;
e.ReferenceColumn = _tokenColumn;
return(e);
}
public LexerException(LexerExceptionCodes code, params object[] args) : base(string.Format(ResolveExceptionMessage(code, args.Length), args))
{
Code = code;
}
public LexerException(LexerExceptionCodes code) : this(code, new object[0])
{
}
