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106 lines
3.1 KiB
C++
106 lines
3.1 KiB
C++
// SPDX-FileCopyrightText: 2019-2024 Connor McLaughlin <stenzek@gmail.com>
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// SPDX-License-Identifier: (GPL-3.0 OR CC-BY-NC-ND-4.0)
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#pragma once
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#include "types.h"
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#include "fmt/core.h"
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#include <string>
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#include <string_view>
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class Error
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{
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public:
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Error();
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Error(const Error& e);
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Error(Error&& e);
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~Error();
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enum class Type
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{
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None = 0,
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Errno = 1,
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Socket = 2,
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User = 3,
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Win32 = 4,
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HResult = 5,
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};
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ALWAYS_INLINE Type GetType() const { return m_type; }
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ALWAYS_INLINE bool IsValid() const { return (m_type != Type::None); }
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ALWAYS_INLINE const std::string& GetDescription() const { return m_description; }
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void Clear();
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/// Error that is set by system functions, such as open().
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void SetErrno(int err);
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void SetErrno(std::string_view prefix, int err);
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/// Error that is set by socket functions, such as socket(). On Unix this is the same as errno.
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void SetSocket(int err);
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void SetSocket(std::string_view prefix, int err);
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/// Set both description and message.
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void SetString(std::string description);
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void SetStringView(std::string_view description);
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#ifdef _WIN32
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/// Error that is returned by some Win32 functions, such as RegOpenKeyEx. Also used by other APIs through
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/// GetLastError().
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void SetWin32(unsigned long err);
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void SetWin32(std::string_view prefix, unsigned long err);
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/// Error that is returned by Win32 COM methods, e.g. S_OK.
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void SetHResult(long err);
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void SetHResult(std::string_view prefix, long err);
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#endif
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static Error CreateNone();
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static Error CreateErrno(int err);
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static Error CreateSocket(int err);
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static Error CreateString(std::string description);
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#ifdef _WIN32
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static Error CreateWin32(unsigned long err);
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static Error CreateHResult(long err);
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#endif
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// helpers for setting
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static void SetErrno(Error* errptr, int err);
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static void SetErrno(Error* errptr, std::string_view prefix, int err);
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static void SetSocket(Error* errptr, int err);
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static void SetSocket(Error* errptr, std::string_view prefix, int err);
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static void SetString(Error* errptr, std::string description);
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static void SetStringView(Error* errptr, std::string_view description);
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#ifdef _WIN32
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static void SetWin32(Error* errptr, unsigned long err);
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static void SetWin32(Error* errptr, std::string_view prefix, unsigned long err);
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static void SetHResult(Error* errptr, long err);
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static void SetHResult(Error* errptr, std::string_view prefix, long err);
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#endif
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/// Sets a formatted message.
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template<typename... T>
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static void SetStringFmt(Error* errptr, fmt::format_string<T...> fmt, T&&... args)
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{
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if (errptr)
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Error::SetString(errptr, fmt::vformat(fmt, fmt::make_format_args(args...)));
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}
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void AddPrefix(std::string_view prefix);
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void AddSuffix(std::string_view suffix);
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static void AddPrefix(Error* errptr, std::string_view prefix);
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static void AddSuffix(Error* errptr, std::string_view prefix);
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Error& operator=(const Error& e);
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Error& operator=(Error&& e);
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bool operator==(const Error& e) const;
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bool operator!=(const Error& e) const;
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private:
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Type m_type = Type::None;
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std::string m_description;
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};
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