Function ParseDoubleFromYsonString

library/cpp/yt/yson_string/convert.cpp:260–281

}

double ParseDoubleFromYsonString(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::DoubleMarker) {
        throw TYsonLiteralParseException(Format("Unexpected %v",
            FormatUnexpectedMarker(ch)));
    }
    if (input.Avail() != sizeof(double)) {
        throw TYsonLiteralParseException(Format("Incorrect remaining string length: expected %v, got %v",
            sizeof(double),
            input.Avail()));
    }
    double result;
    YT_VERIFY(input.Read(&result, sizeof(result)));
    return result;
}

} // namespace