mmdeploy/csrc/experimental/token.h

73 lines
1.4 KiB
C++

// Copyright (c) OpenMMLab. All rights reserved.
#ifndef MMDEPLOY_SRC_TOKEN_TOKEN_H_
#define MMDEPLOY_SRC_TOKEN_TOKEN_H_
#include <cstdint>
#include <memory>
#include <string>
#include <type_traits>
#include <utility>
#include <vector>
#include "core/status_code.h"
namespace mmdeploy {
namespace token {
template <char... cs>
using String = std::integer_sequence<char, cs...>;
// this is a GCC only extension
template <typename T, T... cs>
constexpr String<cs...> operator""_ts() {
return {};
}
template <char... cs>
const char* c_str(String<cs...>) {
static constexpr const char str[sizeof...(cs) + 1] = {cs..., '\0'};
return str;
}
} // namespace token
// template <typename T>
// static void* signature() {
// static char id = 0;
// return &id;
// }
//
// using signature_t = decltype(signature<void>());
template <typename T, typename Key>
struct Token {
using signature_t = void*;
using value_type = T;
Token(T value = {}) : value_(value) {} // NOLINT
operator T() const { return value_; } // NOLINT
static const char* key() { return token::c_str(Key{}); }
T& operator*() { return value_; }
T* operator->() { return &value_; }
private:
T value_;
};
template <typename T>
class Identifier {
public:
constexpr explicit Identifier(const char* key) : key_(key) {}
const char* key_;
};
constexpr inline Identifier<int> batch_size{"batch_size"};
} // namespace mmdeploy
#endif // MMDEPLOY_SRC_TOKEN_TOKEN_H_