71 lines
1.7 KiB
C++
71 lines
1.7 KiB
C++
// SPDX-License-Identifier: MPL-2.0
|
|
// Copyright © 2021 Skyline Team and Contributors (https://github.com/skyline-emu/)
|
|
|
|
#pragma once
|
|
|
|
#include "base.h"
|
|
|
|
namespace skyline {
|
|
/**
|
|
* @brief The result of an operation in HOS
|
|
* @url https://switchbrew.org/wiki/Error_codes
|
|
*/
|
|
union Result {
|
|
u32 raw{};
|
|
struct __attribute__((packed)) {
|
|
u16 module : 9;
|
|
u16 id : 12;
|
|
};
|
|
|
|
/**
|
|
* @note Success is 0, it's the only result that's not specific to a module
|
|
*/
|
|
constexpr Result() = default;
|
|
|
|
constexpr Result(u16 module, u16 id) : module{module}, id{id} {}
|
|
|
|
constexpr explicit Result(u32 raw) : raw{raw} {}
|
|
|
|
constexpr operator u32() const {
|
|
return raw;
|
|
}
|
|
};
|
|
|
|
/**
|
|
* @brief A wrapper around std::optional that also stores a HOS result code
|
|
*/
|
|
template<typename ValueType, typename ResultType = Result>
|
|
class ResultValue {
|
|
static_assert(!std::is_same<ValueType, ResultType>::value);
|
|
|
|
private:
|
|
std::optional<ValueType> value;
|
|
|
|
public:
|
|
ResultType result{};
|
|
|
|
constexpr ResultValue(ValueType value) : value(value) {};
|
|
|
|
constexpr ResultValue(ResultType result) : result(result) {};
|
|
|
|
template<typename U>
|
|
constexpr ResultValue(ResultValue<U> result) : result(result) {};
|
|
|
|
constexpr operator ResultType() const {
|
|
return result;
|
|
}
|
|
|
|
explicit constexpr operator bool() const {
|
|
return value.has_value();
|
|
}
|
|
|
|
constexpr ValueType &operator*() {
|
|
return *value;
|
|
}
|
|
|
|
constexpr ValueType *operator->() {
|
|
return &*value;
|
|
}
|
|
};
|
|
}
|