Function ParseStringFromYsonString

library/cpp/yt/yson_string/convert.cpp:225–258

}

TString ParseStringFromYsonString(const TYsonStringBuf& str)
{
    YT_ASSERT(str.GetType() == EYsonType::Node);
    auto strBuf = str.AsStringBuf();
    TMemoryInput input(strBuf.data(), strBuf.length());
    char ch;
    if (!input.ReadChar(ch)) {
        throw TYsonLiteralParseException("Missing type marker");
    }
    if (ch != NDetail::StringMarker) {
        throw TYsonLiteralParseException(Format("Unexpected %v",
            FormatUnexpectedMarker(ch)));
    }
    i64 length;
    try {
        ReadVarInt64(&input, &length);
    } catch (const std::exception& ex) {
        throw TYsonLiteralParseException(ex, "Failed to decode string length");
    }
    if (length < 0) {
        throw TYsonLiteralParseException(Format(
            "Negative string length %v",
            length));
    }
    if (static_cast<i64>(input.Avail()) != length) {
        throw TYsonLiteralParseException(Format("Incorrect remaining string length: expected %v, got %v",
            length,
            input.Avail()));
    }
    TString result;
    result.ReserveAndResize(length);
    YT_VERIFY(static_cast<i64>(input.Read(result.Detach(), length)) == length);
    return result;
}

double ParseDoubleFromYsonString(const TYsonStringBuf& str)
{