private string ReadLongString(int fromLine, int fromCol, string startpattern, string subtypeforerrors)
{
// here we are at the first '=' or second '['
StringBuilder text = new StringBuilder(1024);
string end_pattern = "]";
if (startpattern == null)
{
for (char c = CursorChar(); ; c = CursorCharNext())
{
if (c == '\0' || !CursorNotEof())
{
throw new SyntaxErrorException(
CreateToken(TokenType.Invalid, fromLine, fromCol),
"unfinished long {0} near '<eof>'", subtypeforerrors)
{
IsPrematureStreamTermination = true
};
}
else if (c == '=')
{
end_pattern += "=";
}
else if (c == '[')
{
end_pattern += "]";
break;
}
else
{
throw new SyntaxErrorException(
CreateToken(TokenType.Invalid, fromLine, fromCol),
"invalid long {0} delimiter near '{1}'", subtypeforerrors, c)
{
IsPrematureStreamTermination = true
};
}
}
}
else
{
end_pattern = startpattern.Replace('[', ']');
}
for (char c = CursorCharNext(); ; c = CursorCharNext())
{
if (c == '\r') // XXI century and we still debate on how a newline is made. throw new DeveloperExtremelyAngryException.
{
continue;
}
if (c == '\0' || !CursorNotEof())
{
throw new SyntaxErrorException(
CreateToken(TokenType.Invalid, fromLine, fromCol),
"unfinished long {0} near '{1}'", subtypeforerrors, text.ToString())
{
IsPrematureStreamTermination = true
};
}
else if (c == ']' && CursorMatches(end_pattern))
{
for (int i = 0; i < end_pattern.Length; i++)
{
CursorCharNext();
}
return(LexerUtils.AdjustLuaLongString(text.ToString()));
}
else
{
text.Append(c);
}
}
}
