internal static string decode(ParseStringRunner parseStringRunner)
{
// At this point, StringPointer has passed starting "
StringPointer sp = parseStringRunner.getStringPointer();
StringBuilder sb = new StringBuilder();
do
{
char chr = sp.getNextChar();
if (chr == '"')
{
return(sb.ToString());
}
if (chr == '\\')
{
chr = sp.getNextChar();
if (chr == '"' || chr == '\\' || chr == '/')
{
// 'chr' works as is
}
else if (chr == 'b')
{
chr = '\b';
}
else if (chr == 'f')
{
chr = '\f';
}
else if (chr == 'n')
{
chr = '\n';
}
else if (chr == 'r')
{
chr = '\r';
}
else if (chr == 't')
{
chr = '\t';
}
else if (chr == 'u')
{
int ucode = 0;
for (int n = 0; n < 4; n++)
{
chr = sp.getNextChar();
int uvalue = HEX.IndexOf(char.ToUpperInvariant(chr));
if (uvalue < 0)
{
throw ParseException.forInvalidCharacter("Invalid hexadecimal character '" + chr + "' after '\\u' in string value", parseStringRunner);
}
ucode = ucode * 16 + uvalue;
}
chr = (char)(ucode);
}
else
{
throw ParseException.forInvalidCharacter("Invalid character '" + chr + "' after '\\' in string value", parseStringRunner);
}
}
sb.Append(chr);
} while (true);
}
private static bool parseCheck(StringPointer sp, char chr)
{
int state;
if (chr == '-')
{
chr = sp.getNextChar();
}
if (chr == '0')
{
chr = sp.getNextChar();
if (chr == '.')
{
state = 5;
}
else if (chr == 'e' || chr == 'E')
{
state = 7;
}
else
{
return(true); // (-)0
}
}
else if (chr >= '1' && chr <= '9')
{
state = 4;
}
else
{
return(false);
}
do
{
chr = sp.getNextChar();
if (state == 4)
{
if (chr >= '0' && chr <= '9')
{
state = 4;
}
else if (chr == '.')
{
state = 5;
}
else if (chr == 'e' || chr == 'E')
{
state = 7;
}
else
{
return(true); // (-)##
}
}
else if (state == 5)
{
if (chr >= '0' && chr <= '9')
{
state = 6;
}
else
{
return(false);
}
}
else if (state == 6)
{
if (chr >= '0' && chr <= '9')
{
state = 6;
}
else if (chr == 'e' || chr == 'E')
{
state = 7;
}
else
{
return(true); // (-)(##).##
}
}
else if (state == 7)
{
if (chr == '+' || chr == '-')
{
chr = sp.getNextChar();
if (chr >= '0' && chr <= '9')
{
state = 9;
}
else
{
return(false);
}
}
else if (chr >= '0' && chr <= '9')
{
state = 9;
}
else
{
return(false);
}
}
else if (state == 9)
{
if (chr >= '0' && chr <= '9')
{
state = 9;
}
else
{
return(true); // (-)(##).##[e/E](+/-)##
}
}
} while (true);
}
