private IniToken LexDefineKeyword(char c, IniTokenPosition pos)
{
var sb = new StringBuilder(c.ToString());
while (!char.IsWhiteSpace(CurrentChar))
{
sb.Append(CurrentChar);
NextChar();
}
return(new IniToken(IniTokenType.DefineKeyword, pos)
{
StringValue = sb.ToString()
});
}
private IniToken LexQuotedString(IniTokenPosition pos)
{
var sb = new StringBuilder();
while (CurrentChar != '"')
{
sb.Append(CurrentChar);
NextChar();
}
NextChar();
return(new IniToken(IniTokenType.StringLiteral, pos)
{
StringValue = sb.ToString()
});
}
private (IniToken?, int nextCharIndex) ReadToken(char[] separators)
{
if (_currentLineCharIndex >= _currentLineText.Length)
{
return(null, _currentLineCharIndex);
}
var nextCharIndex = _currentLineCharIndex;
// Skip leading trivia.
while (nextCharIndex < _currentLineText.Length &&
separators.Contains(_currentLineText[nextCharIndex]))
{
nextCharIndex++;
}
var startIndex = nextCharIndex;
var length = 0;
var position = new IniTokenPosition(_fileName, _currentLine + 1, nextCharIndex + 1);
while (nextCharIndex < _currentLineText.Length &&
!separators.Contains(_currentLineText[nextCharIndex]))
{
length++;
nextCharIndex++;
}
// Skip trailing separator.
if (nextCharIndex < _currentLineText.Length &&
separators.Contains(_currentLineText[nextCharIndex]))
{
nextCharIndex++;
}
var result = _currentLineText.AsSpan(startIndex, length).ToString();
if (result.Length == 0)
{
return(null, nextCharIndex);
}
return(new IniToken(result, position), nextCharIndex);
}
public IniParseException(string message, IniTokenPosition position)
: base($"({position}): {message}")
{
}
private IniToken LexNumber(char c, IniTokenPosition pos)
{
var hasDot = c == '.';
var numberValue = c.ToString();
while (char.IsDigit(CurrentChar) || CurrentChar == '.' || CurrentChar == 'v')
{
if (CurrentChar == '.')
{
if (hasDot)
{
// ODDITY: In CivilianProp.ini:6893, there are two dots in the number: 18.5.0
NextChar();
continue;
}
hasDot = true;
}
else if (CurrentChar == 'v')
{
// ODDITY: In CivilianBuilding.ini:20199, there's a "v" in the middle of a number.
if (PeekChar() == '.')
{
NextChar();
continue;
}
else
{
break;
}
}
numberValue += CurrentChar;
NextChar();
}
var tokenType = hasDot
? IniTokenType.FloatLiteral
: IniTokenType.IntegerLiteral;
if (CurrentChar == '%')
{
tokenType = IniTokenType.PercentLiteral;
NextChar();
}
else if (IsIdentifierChar(CurrentChar))
{
var numIdentifierChars = 0;
while (IsIdentifierChar(CurrentChar))
{
numberValue += CurrentChar;
NextChar();
numIdentifierChars++;
}
if (numIdentifierChars == 1 && numberValue.EndsWith("f"))
{
return(new IniToken(tokenType, CurrentPosition)
{
FloatValue = float.Parse(numberValue.TrimEnd('f'))
});
}
if (hasDot)
{
throw new IniParseException($"Invalid number: {numberValue}", CurrentPosition);
}
return(new IniToken(IniTokenType.Identifier, CurrentPosition)
{
StringValue = numberValue
});
}
switch (tokenType)
{
case IniTokenType.FloatLiteral:
case IniTokenType.PercentLiteral:
return(new IniToken(tokenType, pos)
{
FloatValue = float.Parse(numberValue)
});
case IniTokenType.IntegerLiteral:
var longNumber = long.Parse(numberValue);
if (Math.Abs(longNumber) <= int.MaxValue)
{
return(new IniToken(tokenType, pos)
{
IntegerValue = (int)longNumber
});
}
return(new IniToken(tokenType, pos)
{
LongValue = longNumber
});
default:
throw new ArgumentOutOfRangeException();
}
}