public static object parseSpan(ReadOnlySpan <char> json)
{
if (json.Length == 0)
{
return(null);
}
var firstChar = json[0];
if (firstChar >= '0' && firstChar <= '9')
{
try {
var longValue = MemoryProvider.Instance.ParseInt64(json);
return(longValue >= int.MinValue && longValue <= int.MaxValue
? (int)longValue
: longValue);
} catch {}
if (json.TryParseDouble(out var doubleValue))
{
return(doubleValue);
}
}
if (firstChar == '{' || firstChar == '[')
{
json.ParseJsToken(out var token);
return(token.Evaluate(JS.CreateScope()));
}
return(json.ToString());
}
public static object parseSpan(ReadOnlySpan <char> json)
{
if (json.Length == 0)
{
return(null);
}
var firstChar = json[0];
bool isEscapedJsonString(ReadOnlySpan <char> js) =>
js.StartsWith(@"{\") || js.StartsWith(@"[{\");
if (firstChar >= '0' && firstChar <= '9')
{
try {
var longValue = MemoryProvider.Instance.ParseInt64(json);
return(longValue >= int.MinValue && longValue <= int.MaxValue
? (int)longValue
: longValue);
} catch {}
if (json.TryParseDouble(out var doubleValue))
{
return(doubleValue);
}
}
else if (firstChar == '{' || firstChar == '[' &&
!isEscapedJsonString(json.TrimStart()))
{
json.ParseJsToken(out var token);
return(token.Evaluate(JS.CreateScope()));
}
else if (json.Length == 4)
{
if (firstChar == 't' && json[1] == 'r' && json[2] == 'u' && json[3] == 'e')
{
return(true);
}
if (firstChar == 'n' && json[1] == 'u' && json[2] == 'l' && json[3] == 'l')
{
return(null);
}
}
else if (json.Length == 5 && firstChar == 'f' && json[1] == 'a' && json[2] == 'l' && json[3] == 's' && json[4] == 'e')
{
return(false);
}
var unescapedString = JsonTypeSerializer.Unescape(json);
return(unescapedString.ToString());
}
public static object parse(string json)
{
json.AsSpan().ParseJsToken(out var token);
return(token.Evaluate(JS.CreateScope()));
}