mirror of https://git.suyu.dev/suyu/suyu
bunnei
commit
bb730855e5
@ -0,0 +1,400 @@
|
|||||||
|
// Copyright 2014 Citra Emulator Project
|
||||||
|
// Licensed under GPLv2
|
||||||
|
// Refer to the license.txt file included.
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <cassert>
|
||||||
|
#include <cstddef>
|
||||||
|
#include <type_traits>
|
||||||
|
#include <utility>
|
||||||
|
|
||||||
|
#include "common/common_types.h"
|
||||||
|
#include "common/bit_field.h"
|
||||||
|
|
||||||
|
// All the constants in this file come from http://3dbrew.org/wiki/Error_codes
|
||||||
|
|
||||||
|
/// Detailed description of the error. This listing is likely incomplete.
|
||||||
|
enum class ErrorDescription : u32 {
|
||||||
|
Success = 0,
|
||||||
|
InvalidSection = 1000,
|
||||||
|
TooLarge = 1001,
|
||||||
|
NotAuthorized = 1002,
|
||||||
|
AlreadyDone = 1003,
|
||||||
|
InvalidSize = 1004,
|
||||||
|
InvalidEnumValue = 1005,
|
||||||
|
InvalidCombination = 1006,
|
||||||
|
NoData = 1007,
|
||||||
|
Busy = 1008,
|
||||||
|
MisalignedAddress = 1009,
|
||||||
|
MisalignedSize = 1010,
|
||||||
|
OutOfMemory = 1011,
|
||||||
|
NotImplemented = 1012,
|
||||||
|
InvalidAddress = 1013,
|
||||||
|
InvalidPointer = 1014,
|
||||||
|
InvalidHandle = 1015,
|
||||||
|
NotInitialized = 1016,
|
||||||
|
AlreadyInitialized = 1017,
|
||||||
|
NotFound = 1018,
|
||||||
|
CancelRequested = 1019,
|
||||||
|
AlreadyExists = 1020,
|
||||||
|
OutOfRange = 1021,
|
||||||
|
Timeout = 1022,
|
||||||
|
InvalidResultValue = 1023,
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Identifies the module which caused the error. Error codes can be propagated through a call
|
||||||
|
* chain, meaning that this doesn't always correspond to the module where the API call made is
|
||||||
|
* contained.
|
||||||
|
*/
|
||||||
|
enum class ErrorModule : u32 {
|
||||||
|
Common = 0,
|
||||||
|
Kernel = 1,
|
||||||
|
Util = 2,
|
||||||
|
FileServer = 3,
|
||||||
|
LoaderServer = 4,
|
||||||
|
TCB = 5,
|
||||||
|
OS = 6,
|
||||||
|
DBG = 7,
|
||||||
|
DMNT = 8,
|
||||||
|
PDN = 9,
|
||||||
|
GX = 10,
|
||||||
|
I2C = 11,
|
||||||
|
GPIO = 12,
|
||||||
|
DD = 13,
|
||||||
|
CODEC = 14,
|
||||||
|
SPI = 15,
|
||||||
|
PXI = 16,
|
||||||
|
FS = 17,
|
||||||
|
DI = 18,
|
||||||
|
HID = 19,
|
||||||
|
CAM = 20,
|
||||||
|
PI = 21,
|
||||||
|
PM = 22,
|
||||||
|
PM_LOW = 23,
|
||||||
|
FSI = 24,
|
||||||
|
SRV = 25,
|
||||||
|
NDM = 26,
|
||||||
|
NWM = 27,
|
||||||
|
SOC = 28,
|
||||||
|
LDR = 29,
|
||||||
|
ACC = 30,
|
||||||
|
RomFS = 31,
|
||||||
|
AM = 32,
|
||||||
|
HIO = 33,
|
||||||
|
Updater = 34,
|
||||||
|
MIC = 35,
|
||||||
|
FND = 36,
|
||||||
|
MP = 37,
|
||||||
|
MPWL = 38,
|
||||||
|
AC = 39,
|
||||||
|
HTTP = 40,
|
||||||
|
DSP = 41,
|
||||||
|
SND = 42,
|
||||||
|
DLP = 43,
|
||||||
|
HIO_LOW = 44,
|
||||||
|
CSND = 45,
|
||||||
|
SSL = 46,
|
||||||
|
AM_LOW = 47,
|
||||||
|
NEX = 48,
|
||||||
|
Friends = 49,
|
||||||
|
RDT = 50,
|
||||||
|
Applet = 51,
|
||||||
|
NIM = 52,
|
||||||
|
PTM = 53,
|
||||||
|
MIDI = 54,
|
||||||
|
MC = 55,
|
||||||
|
SWC = 56,
|
||||||
|
FatFS = 57,
|
||||||
|
NGC = 58,
|
||||||
|
CARD = 59,
|
||||||
|
CARDNOR = 60,
|
||||||
|
SDMC = 61,
|
||||||
|
BOSS = 62,
|
||||||
|
DBM = 63,
|
||||||
|
Config = 64,
|
||||||
|
PS = 65,
|
||||||
|
CEC = 66,
|
||||||
|
IR = 67,
|
||||||
|
UDS = 68,
|
||||||
|
PL = 69,
|
||||||
|
CUP = 70,
|
||||||
|
Gyroscope = 71,
|
||||||
|
MCU = 72,
|
||||||
|
NS = 73,
|
||||||
|
News = 74,
|
||||||
|
RO_1 = 75,
|
||||||
|
GD = 76,
|
||||||
|
CardSPI = 77,
|
||||||
|
EC = 78,
|
||||||
|
RO_2 = 79,
|
||||||
|
WebBrowser = 80,
|
||||||
|
Test = 81,
|
||||||
|
ENC = 82,
|
||||||
|
PIA = 83,
|
||||||
|
|
||||||
|
Application = 254,
|
||||||
|
InvalidResult = 255
|
||||||
|
};
|
||||||
|
|
||||||
|
/// A less specific error cause.
|
||||||
|
enum class ErrorSummary : u32 {
|
||||||
|
Success = 0,
|
||||||
|
NothingHappened = 1,
|
||||||
|
WouldBlock = 2,
|
||||||
|
OutOfResource = 3, ///< There are no more kernel resources (memory, table slots) to
|
||||||
|
///< execute the operation.
|
||||||
|
NotFound = 4, ///< A file or resource was not found.
|
||||||
|
InvalidState = 5,
|
||||||
|
NotSupported = 6, ///< The operation is not supported or not implemented.
|
||||||
|
InvalidArgument = 7, ///< Returned when a passed argument is invalid in the current runtime
|
||||||
|
///< context. (Invalid handle, out-of-bounds pointer or size, etc.)
|
||||||
|
WrongArgument = 8, ///< Returned when a passed argument is in an incorrect format for use
|
||||||
|
///< with the function. (E.g. Invalid enum value)
|
||||||
|
Canceled = 9,
|
||||||
|
StatusChanged = 10,
|
||||||
|
Internal = 11,
|
||||||
|
|
||||||
|
InvalidResult = 63
|
||||||
|
};
|
||||||
|
|
||||||
|
/// The severity of the error.
|
||||||
|
enum class ErrorLevel : u32 {
|
||||||
|
Success = 0,
|
||||||
|
Info = 1,
|
||||||
|
|
||||||
|
Status = 25,
|
||||||
|
Temporary = 26,
|
||||||
|
Permanent = 27,
|
||||||
|
Usage = 28,
|
||||||
|
Reinitialize = 29,
|
||||||
|
Reset = 30,
|
||||||
|
Fatal = 31
|
||||||
|
};
|
||||||
|
|
||||||
|
/// Encapsulates a CTR-OS error code, allowing it to be separated into its constituent fields.
|
||||||
|
union ResultCode {
|
||||||
|
u32 raw;
|
||||||
|
|
||||||
|
BitField<0, 10, ErrorDescription> description;
|
||||||
|
BitField<10, 8, ErrorModule> module;
|
||||||
|
|
||||||
|
BitField<21, 6, ErrorSummary> summary;
|
||||||
|
BitField<27, 5, ErrorLevel> level;
|
||||||
|
|
||||||
|
// The last bit of `level` is checked by apps and the kernel to determine if a result code is an error
|
||||||
|
BitField<31, 1, u32> is_error;
|
||||||
|
|
||||||
|
explicit ResultCode(u32 raw) : raw(raw) {}
|
||||||
|
ResultCode(ErrorDescription description_, ErrorModule module_,
|
||||||
|
ErrorSummary summary_, ErrorLevel level_) : raw(0) {
|
||||||
|
description = description_;
|
||||||
|
module = module_;
|
||||||
|
summary = summary_;
|
||||||
|
level = level_;
|
||||||
|
}
|
||||||
|
|
||||||
|
ResultCode& operator=(const ResultCode& o) { raw = o.raw; return *this; }
|
||||||
|
|
||||||
|
bool IsSuccess() const {
|
||||||
|
return is_error == 0;
|
||||||
|
}
|
||||||
|
|
||||||
|
bool IsError() const {
|
||||||
|
return is_error == 1;
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
inline bool operator==(const ResultCode a, const ResultCode b) {
|
||||||
|
return a.raw == b.raw;
|
||||||
|
}
|
||||||
|
|
||||||
|
inline bool operator!=(const ResultCode a, const ResultCode b) {
|
||||||
|
return a.raw != b.raw;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Convenience functions for creating some common kinds of errors:
|
||||||
|
|
||||||
|
/// The default success `ResultCode`.
|
||||||
|
const ResultCode RESULT_SUCCESS(0);
|
||||||
|
|
||||||
|
/// Might be returned instead of a dummy success for unimplemented APIs.
|
||||||
|
inline ResultCode UnimplementedFunction(ErrorModule module) {
|
||||||
|
return ResultCode(ErrorDescription::NotImplemented, module,
|
||||||
|
ErrorSummary::NotSupported, ErrorLevel::Permanent);
|
||||||
|
}
|
||||||
|
/// Returned when a function is passed an invalid handle.
|
||||||
|
inline ResultCode InvalidHandle(ErrorModule module) {
|
||||||
|
return ResultCode(ErrorDescription::InvalidHandle, module,
|
||||||
|
ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* This is an optional value type. It holds a `ResultCode` and, if that code is a success code,
|
||||||
|
* also holds a result of type `T`. If the code is an error code then trying to access the inner
|
||||||
|
* value fails, thus ensuring that the ResultCode of functions is always checked properly before
|
||||||
|
* their return value is used. It is similar in concept to the `std::optional` type
|
||||||
|
* (http://en.cppreference.com/w/cpp/experimental/optional) originally proposed for inclusion in
|
||||||
|
* C++14, or the `Result` type in Rust (http://doc.rust-lang.org/std/result/index.html).
|
||||||
|
*
|
||||||
|
* An example of how it could be used:
|
||||||
|
* \code
|
||||||
|
* ResultVal<int> Frobnicate(float strength) {
|
||||||
|
* if (strength < 0.f || strength > 1.0f) {
|
||||||
|
* // Can't frobnicate too weakly or too strongly
|
||||||
|
* return ResultCode(ErrorDescription::OutOfRange, ErrorModule::Common,
|
||||||
|
* ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
|
||||||
|
* } else {
|
||||||
|
* // Frobnicated! Give caller a cookie
|
||||||
|
* return MakeResult<int>(42);
|
||||||
|
* }
|
||||||
|
* }
|
||||||
|
* \endcode
|
||||||
|
*
|
||||||
|
* \code
|
||||||
|
* ResultVal<int> frob_result = Frobnicate(0.75f);
|
||||||
|
* if (frob_result) {
|
||||||
|
* // Frobbed ok
|
||||||
|
* printf("My cookie is %d\n", *frob_result);
|
||||||
|
* } else {
|
||||||
|
* printf("Guess I overdid it. :( Error code: %ux\n", frob_result.code().hex);
|
||||||
|
* }
|
||||||
|
* \endcode
|
||||||
|
*/
|
||||||
|
template <typename T>
|
||||||
|
class ResultVal {
|
||||||
|
public:
|
||||||
|
/// Constructs an empty `ResultVal` with the given error code. The code must not be a success code.
|
||||||
|
ResultVal(ResultCode error_code = ResultCode(-1))
|
||||||
|
: result_code(error_code)
|
||||||
|
{
|
||||||
|
assert(error_code.IsError());
|
||||||
|
UpdateDebugPtr();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Similar to the non-member function `MakeResult`, with the exception that you can manually
|
||||||
|
* specify the success code. `success_code` must not be an error code.
|
||||||
|
*/
|
||||||
|
template <typename... Args>
|
||||||
|
static ResultVal WithCode(ResultCode success_code, Args&&... args) {
|
||||||
|
ResultVal<T> result;
|
||||||
|
result.emplace(success_code, std::forward<Args>(args)...);
|
||||||
|
return result;
|
||||||
|
}
|
||||||
|
|
||||||
|
ResultVal(const ResultVal& o)
|
||||||
|
: result_code(o.result_code)
|
||||||
|
{
|
||||||
|
if (!o.empty()) {
|
||||||
|
new (&storage) T(*o.GetPointer());
|
||||||
|
}
|
||||||
|
UpdateDebugPtr();
|
||||||
|
}
|
||||||
|
|
||||||
|
ResultVal(ResultVal&& o)
|
||||||
|
: result_code(o.result_code)
|
||||||
|
{
|
||||||
|
if (!o.empty()) {
|
||||||
|
new (&storage) T(std::move(*o.GetPointer()));
|
||||||
|
}
|
||||||
|
UpdateDebugPtr();
|
||||||
|
}
|
||||||
|
|
||||||
|
~ResultVal() {
|
||||||
|
if (!empty()) {
|
||||||
|
GetPointer()->~T();
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
ResultVal& operator=(const ResultVal& o) {
|
||||||
|
if (*this) {
|
||||||
|
if (o) {
|
||||||
|
*GetPointer() = *o.GetPointer();
|
||||||
|
} else {
|
||||||
|
GetPointer()->~T();
|
||||||
|
}
|
||||||
|
} else {
|
||||||
|
if (o) {
|
||||||
|
new (&storage) T(*o.GetPointer());
|
||||||
|
}
|
||||||
|
}
|
||||||
|
result_code = o.result_code;
|
||||||
|
UpdateDebugPtr();
|
||||||
|
|
||||||
|
return *this;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Replaces the current result with a new constructed result value in-place. The code must not
|
||||||
|
* be an error code.
|
||||||
|
*/
|
||||||
|
template <typename... Args>
|
||||||
|
void emplace(ResultCode success_code, Args&&... args) {
|
||||||
|
assert(success_code.IsSuccess());
|
||||||
|
if (!empty()) {
|
||||||
|
GetPointer()->~T();
|
||||||
|
}
|
||||||
|
new (&storage) T(std::forward<Args>(args)...);
|
||||||
|
result_code = success_code;
|
||||||
|
UpdateDebugPtr();
|
||||||
|
}
|
||||||
|
|
||||||
|
/// Returns true if the `ResultVal` contains an error code and no value.
|
||||||
|
bool empty() const { return result_code.IsError(); }
|
||||||
|
|
||||||
|
/// Returns true if the `ResultVal` contains a return value.
|
||||||
|
bool Succeeded() const { return result_code.IsSuccess(); }
|
||||||
|
/// Returns true if the `ResultVal` contains an error code and no value.
|
||||||
|
bool Failed() const { return empty(); }
|
||||||
|
|
||||||
|
ResultCode Code() const { return result_code; }
|
||||||
|
|
||||||
|
const T& operator* () const { return *GetPointer(); }
|
||||||
|
T& operator* () { return *GetPointer(); }
|
||||||
|
const T* operator->() const { return GetPointer(); }
|
||||||
|
T* operator->() { return GetPointer(); }
|
||||||
|
|
||||||
|
/// Returns the value contained in this `ResultVal`, or the supplied default if it is missing.
|
||||||
|
template <typename U>
|
||||||
|
T ValueOr(U&& value) const {
|
||||||
|
return !empty() ? *GetPointer() : std::move(value);
|
||||||
|
}
|
||||||
|
|
||||||
|
private:
|
||||||
|
typedef typename std::aligned_storage<sizeof(T), std::alignment_of<T>::value>::type StorageType;
|
||||||
|
|
||||||
|
StorageType storage;
|
||||||
|
ResultCode result_code;
|
||||||
|
#if _DEBUG
|
||||||
|
// The purpose of this pointer is to aid inspecting the type with a debugger, eliminating the
|
||||||
|
// need to cast `storage` to a pointer or pay attention to `result_code`.
|
||||||
|
const T* debug_ptr;
|
||||||
|
#endif
|
||||||
|
|
||||||
|
void UpdateDebugPtr() {
|
||||||
|
#if _DEBUG
|
||||||
|
debug_ptr = empty() ? nullptr : static_cast<const T*>(static_cast<const void*>(&storage));
|
||||||
|
#endif
|
||||||
|
}
|
||||||
|
|
||||||
|
const T* GetPointer() const {
|
||||||
|
assert(!empty());
|
||||||
|
return static_cast<const T*>(static_cast<const void*>(&storage));
|
||||||
|
}
|
||||||
|
|
||||||
|
T* GetPointer() {
|
||||||
|
assert(!empty());
|
||||||
|
return static_cast<T*>(static_cast<void*>(&storage));
|
||||||
|
}
|
||||||
|
};
|
||||||
|
|
||||||
|
/**
|
||||||
|
* This function is a helper used to construct `ResultVal`s. It receives the arguments to construct
|
||||||
|
* `T` with and creates a success `ResultVal` contained the constructed value.
|
||||||
|
*/
|
||||||
|
template <typename T, typename... Args>
|
||||||
|
ResultVal<T> MakeResult(Args&&... args) {
|
||||||
|
return ResultVal<T>::WithCode(RESULT_SUCCESS, std::forward<Args>(args)...);
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue