Conversion of custom string class to std string

[imtrobin]

Hi, I have an external library, which defines the custom string class. I prefer not to touch its source code. So I wondering if there is a way to call a custom conversion function to convert the std string to custom string class while deserializing.

[Siyuan Ren]

The implementation of string support is in include/staticjson/primitive_types.hpp, as

namespace staticjson 
{
template <>
class Handler<std::string> : public BaseHandler
{
private:
    std::string* m_value;

public:
    explicit Handler(std::string* v) : m_value(v) {}

    bool String(const char* str, SizeType length, bool) override
    {
        m_value->assign(str, length);
        this->parsed = true;
        return true;
    }

    std::string type_name() const override { return "string"; }

    bool write(IHandler* out) const override
    {
        return out->String(m_value->data(), SizeType(m_value->size()), true);
    }

    void generate_schema(Value& output, MemoryPoolAllocator& alloc) const override
    {
        output.SetObject();
        output.AddMember(rapidjson::StringRef("type"), rapidjson::StringRef("string"), alloc);
    }
};
}

I think it is pretty obvious how to write the specialization for your own string class. Just remember to put the specialization in namespace staticjson, and put it before any usage of staticjson functions.

[imtrobin]

Thank you.