conversion from 'size_t' to 'rapidjson::SizeType'

Question

I have this c++ example code:

void test()
{
    rapidjson::Document doc;
    doc.SetObject();

    const std::string source = "The quick brown fox jumps over the lazy dog";   
    rapidjson::Value source_val;
    source_val.SetString( source.c_str(), source.length(), doc.GetAllocator() );        
}

And at compile time, on x64 platform, I get this warning:

warning C4267: 'argument': conversion from size_t to rapidjson::SizeType, possible loss of data

How can I correctly convert from a string's length (size_t) to rapidjson SizeType?

Answer 1

Per the documentation:

RapidJSON uses 32-bit array/string indices even on 64-bit platforms, instead of using size_t. Users may override the SizeType by defining RAPIDJSON_NO_SIZETYPEDEFINE.