/// <summary>String literal scan.</summary>
public static void ScanString()
{
//Current character = "
Text.NextCh(); //Skip "
string octal = "01234567";
if (Text.Ch() == '"')
{
Text.NextCh();
_lex = Lex.STRINGLITERAL;
}
else
{
while (Text.Ch() != '"' && Text.ChNext() != '\n' && Text.ChNext() != '\r' && Text.Ch() != Text.ChEOT)
{
if (Text.Ch() == '\\')
{
Text.NextCh();
if (Text.Ch() == 'u')
{
CharAnalysis.UnicodeString();
}
else if (Text.Ch() == 't' || Text.Ch() == 'r' || Text.Ch() == 'f' || Text.Ch() == 'b' || Text.Ch() == 'n')
{
Text.NextCh();
}
else if (Text.Ch() == '\\' || Text.Ch() == '"')
{
Text.NextCh();
}
else if (octal.Contains(Text.Ch()))
{
CharAnalysis.OctalCharScan();
}
else
{
Error.LexError("Неправильная запись ");
}
}
else
{
Text.NextCh();
}
}
if (Text.Ch() == '"')
{
Text.NextCh();
_lex = Lex.STRINGLITERAL;
}
else
{
Error.LexError("Кавычка не закрыта");
}
}
}
/// <summary>Character lex scan. </summary>
public static void ScanChar()
{
//Current character = "'".
Text.NextCh(); //Skip '
if (Text.Ch() == '\\')
{
_lex = CharAnalysis.EscapeSequence();
}
else
{
_lex = CharAnalysis.SingleChar();
}
}