private char UnEscapeUnicode()
{
var code = 0;
for (var i = 0; i < 4; i++)
{
Consume();
var ch = _nextChar;
code <<= 4;
if ('0' <= ch && ch <= '9')
{
code += ch - '0';
}
else if ('a' <= ch && ch <= 'f')
{
code += 10 + ch - 'a';
}
else if ('A' <= ch && ch <= 'F')
{
code += 10 + ch - 'A';
}
else
{
throw JsonParserException.InvalidError($"unicode escape '{ch}'", _position);
}
}
return((char)code);
}
private char UnEscape()
{
Consume();
var ch = _nextChar;
switch (ch)
{
case '\\':
case '/':
case '"':
break;
case 'b':
ch = '\b';
break;
case 'f':
ch = '\f';
break;
case 'n':
ch = '\n';
break;
case 'r':
ch = '\r';
break;
case 't':
ch = '\t';
break;
case 'u':
ch = UnEscapeUnicode();
break;
default:
throw JsonParserException.InvalidError($"escape character '{ch}'", _position);
}
return(ch);
}
