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#pragma once
#include <functional>
#include <forstio/error.hpp>
#include "schema.hpp"
#include "data.hpp"
namespace saw {
template<typename SchemaFunc, typename Encode>
class function;
template<typename Request, typename Response, typename Encode>
class function<schema::Function<Request, Response>, Encode> {
private:
std::function<data<Response, Encode>(data<Request, Encode>)> func_;
public:
template<typename Func>
function(Func func):
func_{std::move(func)}
{}
error_or<data<Response, Encode>> call(data<Request, Encode> req){
return func_(std::move(req));
}
};
template<typename Iface, typename Encode>
class i_interface {
public:
virtual ~i_interface() = default;
};
template<typename T, typename Encode, typename... Funcs>
class interface;
template<typename... Requests, typename... Responses, string_literal... Names, typename Encode>
class interface<schema::Interface<schema::Member<schema::Function<Requests, Responses>, Names>...>, Encode> {
public:
using Schema = schema::Interface<schema::Member<schema::Function<Requests, Responses>,Names>...>;
private:
std::tuple<function<schema::Function<Requests, Responses>, Encode>...> funcs_;
public:
interface(function<schema::Function<Requests, Responses>, Encode>... funcs):
funcs_{std::move(funcs)...}
{}
/**
* Get the function based on the string literal matching the position in the tuple
*/
template<string_literal Lit>
function<
schema::Function<
typename parameter_pack_type<
parameter_key_pack_index<
Lit, Names...
>::value
, Requests...>::type
,
typename parameter_pack_type<
parameter_key_pack_index<
Lit, Names...
>::value
, Responses...>::type
>
,
Encode
>& get(){
return std::get<parameter_key_pack_index<Lit, Names...>::value>(funcs_);
}
template<string_literal Lit>
error_or<
data<
typename parameter_pack_type<
parameter_key_pack_index<
Lit, Names...
>::value
, Responses...>::type
, Encode>> call(
data<
typename parameter_pack_type<
parameter_key_pack_index<
Lit, Names...
>::value
, Requests...>::type
, Encode> req
){
return get<Lit>().call(std::move(req));
}
};
template<typename T, typename Encode>
struct function_factory {
template<typename Func>
static function<T,Encode> create(Func func){
return function<T,Encode>{std::move(func)};
}
};
template<typename T, typename Encode>
struct interface_factory {
template<typename... Func>
static interface<T,Encode> create(Func... func){
return interface<T,Encode>{std::move(func)...};
}
};
}
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