Atmosphere/libraries/libstratosphere/include/stratosphere/err/err_error_context.hpp
2020-12-03 11:13:35 -08:00

93 lines
3.4 KiB
C++

/*
* Copyright (c) 2018-2020 Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours.hpp>
#include <stratosphere/sf/sf_buffer_tags.hpp>
namespace ams::err {
enum class ErrorContextType : u8 {
None = 0,
Http = 1,
FileSystem = 2,
WebMediaPlayer = 3,
LocalContentShare = 4,
};
struct PaddingErrorContext {
u8 padding[0x200 - 8];
};
struct ErrorContext : public sf::LargeData, public sf::PrefersMapAliasTransferMode {
ErrorContextType type;
u8 reserved[7];
union {
PaddingErrorContext padding;
};
};
static_assert(sizeof(ErrorContext) == 0x200);
static_assert(util::is_pod<ErrorContext>::value);
struct ContextDescriptor {
int value;
constexpr ALWAYS_INLINE bool operator==(const ContextDescriptor &rhs) const { return this->value == rhs.value; }
constexpr ALWAYS_INLINE bool operator!=(const ContextDescriptor &rhs) const { return this->value != rhs.value; }
constexpr ALWAYS_INLINE bool operator< (const ContextDescriptor &rhs) const { return this->value < rhs.value; }
constexpr ALWAYS_INLINE bool operator<=(const ContextDescriptor &rhs) const { return this->value <= rhs.value; }
constexpr ALWAYS_INLINE bool operator> (const ContextDescriptor &rhs) const { return this->value > rhs.value; }
constexpr ALWAYS_INLINE bool operator>=(const ContextDescriptor &rhs) const { return this->value >= rhs.value; }
};
constexpr inline const ContextDescriptor InvalidContextDescriptor{ -1 };
namespace impl {
constexpr inline const ContextDescriptor ContextDescriptorMin{ 0x001 };
constexpr inline const ContextDescriptor ContextDescriptorMax{ 0x1FF };
}
constexpr Result MakeResultWithContextDescriptor(Result result, ContextDescriptor descriptor) {
/* Check pre-conditions. */
AMS_ASSERT(R_FAILED(result));
AMS_ASSERT(descriptor != InvalidContextDescriptor);
AMS_ASSERT(impl::ContextDescriptorMin <= descriptor && descriptor <= impl::ContextDescriptorMax);
return result::impl::ResultInternalAccessor::MergeReserved(result, descriptor.value | 0x200);
}
constexpr ContextDescriptor GetContextDescriptorFromResult(Result result) {
/* Check pre-conditions. */
AMS_ASSERT(R_FAILED(result));
/* Get reserved bits. */
const auto reserved = result::impl::ResultInternalAccessor::GetReserved(result);
if ((reserved & 0x200) != 0x200) {
return InvalidContextDescriptor;
}
/* Check the descriptor value. */
const ContextDescriptor descriptor{reserved & ~0x200};
if (!(impl::ContextDescriptorMin <= descriptor && descriptor <= impl::ContextDescriptorMax)) {
return InvalidContextDescriptor;
}
return descriptor;
}
}