public ReadResults ReadString(out JsonString result)
{
result = default;
string actualString = "";
if (!StringReader.CanRead() || StringReader.Peek() != STRING_CHARACTER)
{
return(ReadResults.Failure(JsonCommandError.MalformedJson().WithContext(StringReader)));
}
StringReader.Skip();
bool escaped = false;
while (StringReader.CanRead())
{
char c = StringReader.Read();
if (escaped)
{
if (c == UNICODE_CHARACTER)
{
if (!StringReader.CanRead(4))
{
return(ReadResults.Failure(JsonCommandError.UnterminatedEscapeSequence().WithContext(StringReader)));
}
string unicode = StringReader.Read(4);
if (!short.TryParse(unicode, NumberStyles.HexNumber, NumberFormatInfo.InvariantInfo, out _))
{
return(ReadResults.Failure(JsonCommandError.InvalidUnicodeCharacter(unicode).WithContext(StringReader)));
}
escaped = false;
actualString += c + unicode;
}
else if (ESCAPABLE_CHARACTERS.Contains(c))
{
escaped = false;
actualString += c;
}
else
{
return(ReadResults.Failure(JsonCommandError.InvalidEscapeSequence().WithContext(StringReader)));
}
}
else if (c == ESCAPE_CHARACTER)
{
escaped = true;
actualString += c;
}
else if (c == STRING_CHARACTER)
{
result = new JsonString(actualString);
return(ReadResults.Success());
}
else
{
actualString += c;
}
}
return(ReadResults.Failure(JsonCommandError.UnterminatedString().WithContext(StringReader)));
}
public ReadResults ReadObject(out JsonObject result)
{
result = new JsonObject();
if (!StringReader.CanRead() || StringReader.Peek() != OBJECT_OPEN_CHARACTER)
{
return(ReadResults.Failure(JsonCommandError.MalformedJson()));
}
StringReader.Skip();
SkipWhitespace();
ReadResults readResults;
while (StringReader.CanRead() && StringReader.Peek() != OBJECT_CLOSE_CHARACTER)
{
SkipWhitespace();
readResults = ReadString(out JsonString name);
if (!readResults.Successful)
{
return(readResults);
}
SkipWhitespace();
if (!StringReader.CanRead() || StringReader.Peek() != NAME_VALUE_SEPARATOR)
{
return(ReadResults.Failure(JsonCommandError.ExpectedNameValueSeparator().WithContext(StringReader)));
}
StringReader.Skip();
SkipWhitespace();
readResults = ReadAny(out IJsonArgument argument);
if (!readResults.Successful)
{
return(readResults);
}
result.Add(name, argument);
SkipWhitespace();
if (!StringReader.CanRead() || StringReader.Peek() != ARGUMENT_SEPARATOR)
{
break;
}
StringReader.Skip();
}
if (!StringReader.CanRead() || StringReader.Peek() != OBJECT_CLOSE_CHARACTER)
{
return(ReadResults.Failure(JsonCommandError.EndOfInput().WithContext(StringReader)));
}
StringReader.Skip();
return(ReadResults.Success());
}
public ReadResults ReadArray(out JsonArray result)
{
result = new JsonArray();
if (!StringReader.CanRead() || StringReader.Peek() != ARRAY_OPEN_CHARACTER)
{
return(ReadResults.Failure(JsonCommandError.MalformedJson()));
}
StringReader.Skip();
SkipWhitespace();
ReadResults readResults;
while (StringReader.CanRead() && StringReader.Peek() != ARRAY_CLOSE_CHARACTER)
{
SkipWhitespace();
readResults = ReadAny(out IJsonArgument argument);
if (!readResults.Successful)
{
return(readResults);
}
result.Add(argument);
SkipWhitespace();
if (!StringReader.CanRead() || StringReader.Peek() != ARGUMENT_SEPARATOR)
{
break;
}
StringReader.Skip();
}
if (!StringReader.CanRead() || StringReader.Peek() != ARRAY_CLOSE_CHARACTER)
{
return(ReadResults.Failure(JsonCommandError.EndOfInput().WithContext(StringReader)));
}
StringReader.Skip();
return(ReadResults.Success());
}
