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Removed FunctionTraits.h.

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Relintai 2021-06-20 16:00:28 +02:00
parent 18f1bc2496
commit bb1f871478
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142
modules/drogon/drogon/lib/inc/drogon/utils/FunctionTraits.h
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@ -1,142 +0,0 @@
/**
*
* FunctionTraits.h
* An Tao
*
* Copyright 2018, An Tao. All rights reserved.
* https://github.com/an-tao/drogon
* Use of this source code is governed by a MIT license
* that can be found in the License file.
*
* Drogon
*
*/
#pragma once
#include <functional>
#include <memory>
#include <tuple>
#include <type_traits>
namespace drogon {
class HttpRequest;
class HttpResponse;
using HttpRequestPtr = std::shared_ptr<HttpRequest>;
using HttpResponsePtr = std::shared_ptr<HttpResponse>;
namespace internal {
template <typename T>
struct resumable_type : std::false_type {
};
template <typename>
struct FunctionTraits;
// functor,lambda,std::function...
template <typename Function>
struct FunctionTraits : public FunctionTraits<decltype(
&std::remove_reference<Function>::type::operator())> {
static const bool isClassFunction = false;
static const bool isDrObjectClass = false;
using class_type = void;
static const std::string name() {
return std::string("Functor");
}
};
// class instance method of const object
template <typename ClassType, typename ReturnType, typename... Arguments>
struct FunctionTraits<ReturnType (ClassType::*)(Arguments...) const>
: FunctionTraits<ReturnType (*)(Arguments...)> {
static const bool isClassFunction = true;
static const bool isDrObjectClass =
std::is_base_of<DrObject<ClassType>, ClassType>::value;
using class_type = ClassType;
static const std::string name() {
return std::string("Class Function");
}
};
// class instance method of non-const object
template <typename ClassType, typename ReturnType, typename... Arguments>
struct FunctionTraits<ReturnType (ClassType::*)(Arguments...)>
: FunctionTraits<ReturnType (*)(Arguments...)> {
static const bool isClassFunction = true;
static const bool isDrObjectClass =
std::is_base_of<DrObject<ClassType>, ClassType>::value;
using class_type = ClassType;
static const std::string name() {
return std::string("Class Function");
}
};
// normal function for HTTP handling
template <typename ReturnType, typename... Arguments>
struct FunctionTraits<
ReturnType (*)(const HttpRequestPtr &req,
std::function<void(const HttpResponsePtr &)> &&callback,
Arguments...)> : FunctionTraits<ReturnType (*)(Arguments...)> {
static const bool isHTTPFunction = !resumable_type<ReturnType>::value;
static const bool isCoroutine = false;
using class_type = void;
using first_param_type = HttpRequestPtr;
using return_type = ReturnType;
};
template <typename ReturnType, typename... Arguments>
struct FunctionTraits<
ReturnType (*)(HttpRequestPtr &req,
std::function<void(const HttpResponsePtr &)> &&callback,
Arguments...)> : FunctionTraits<ReturnType (*)(Arguments...)> {
static const bool isHTTPFunction = false;
using class_type = void;
};
template <typename ReturnType, typename... Arguments>
struct FunctionTraits<
ReturnType (*)(HttpRequestPtr &&req,
std::function<void(const HttpResponsePtr &)> &&callback,
Arguments...)> : FunctionTraits<ReturnType (*)(Arguments...)> {
static const bool isHTTPFunction = false;
using class_type = void;
};
// normal function for HTTP handling
template <typename T, typename ReturnType, typename... Arguments>
struct FunctionTraits<
ReturnType (*)(T &&customReq,
std::function<void(const HttpResponsePtr &)> &&callback,
Arguments...)> : FunctionTraits<ReturnType (*)(Arguments...)> {
static const bool isHTTPFunction = !resumable_type<ReturnType>::value;
static const bool isCoroutine = false;
using class_type = void;
using first_param_type = T;
using return_type = ReturnType;
};
// normal function
template <typename ReturnType, typename... Arguments>
struct FunctionTraits<ReturnType (*)(Arguments...)> {
using result_type = ReturnType;
template <std::size_t Index>
using argument =
typename std::tuple_element<Index, std::tuple<Arguments...> >::type;
static const std::size_t arity = sizeof...(Arguments);
using class_type = void;
using return_type = ReturnType;
static const bool isHTTPFunction = false;
static const bool isClassFunction = false;
static const bool isDrObjectClass = false;
static const bool isCoroutine = false;
static const std::string name() {
return std::string("Normal or Static Function");
}
};
} // namespace internal
} // namespace drogon