llvm-project/llvm/utils/KillTheDoctor/system_error.h

663 lines
21 KiB
C++

//===---------------------------- system_error ----------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This was lifted from libc++ and modified for C++03.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_SYSTEM_SYSTEM_ERROR_H
#define LLVM_SYSTEM_SYSTEM_ERROR_H
/*
system_error synopsis
namespace std
{
class error_category
{
public:
virtual ~error_category();
error_category(const error_category&) = delete;
error_category& operator=(const error_category&) = delete;
virtual const char* name() const = 0;
virtual error_condition default_error_condition(int ev) const;
virtual bool equivalent(int code, const error_condition& condition) const;
virtual bool equivalent(const error_code& code, int condition) const;
virtual std::string message(int ev) const = 0;
bool operator==(const error_category& rhs) const;
bool operator!=(const error_category& rhs) const;
bool operator<(const error_category& rhs) const;
};
const error_category& generic_category();
const error_category& system_category();
template <class T> struct is_error_code_enum
: public false_type {};
template <class T> struct is_error_condition_enum
: public false_type {};
class error_code
{
public:
// constructors:
error_code();
error_code(int val, const error_category& cat);
template <class ErrorCodeEnum>
error_code(ErrorCodeEnum e);
// modifiers:
void assign(int val, const error_category& cat);
template <class ErrorCodeEnum>
error_code& operator=(ErrorCodeEnum e);
void clear();
// observers:
int value() const;
const error_category& category() const;
error_condition default_error_condition() const;
std::string message() const;
explicit operator bool() const;
};
// non-member functions:
bool operator<(const error_code& lhs, const error_code& rhs);
template <class charT, class traits>
basic_ostream<charT,traits>&
operator<<(basic_ostream<charT,traits>& os, const error_code& ec);
class error_condition
{
public:
// constructors:
error_condition();
error_condition(int val, const error_category& cat);
template <class ErrorConditionEnum>
error_condition(ErrorConditionEnum e);
// modifiers:
void assign(int val, const error_category& cat);
template <class ErrorConditionEnum>
error_condition& operator=(ErrorConditionEnum e);
void clear();
// observers:
int value() const;
const error_category& category() const;
std::string message() const;
explicit operator bool() const;
};
bool operator<(const error_condition& lhs, const error_condition& rhs);
class system_error
: public runtime_error
{
public:
system_error(error_code ec, const std::string& what_arg);
system_error(error_code ec, const char* what_arg);
system_error(error_code ec);
system_error(int ev, const error_category& ecat, const std::string& what_arg);
system_error(int ev, const error_category& ecat, const char* what_arg);
system_error(int ev, const error_category& ecat);
const error_code& code() const throw();
const char* what() const throw();
};
enum class errc
{
address_family_not_supported, // EAFNOSUPPORT
address_in_use, // EADDRINUSE
address_not_available, // EADDRNOTAVAIL
already_connected, // EISCONN
argument_list_too_long, // E2BIG
argument_out_of_domain, // EDOM
bad_address, // EFAULT
bad_file_descriptor, // EBADF
bad_message, // EBADMSG
broken_pipe, // EPIPE
connection_aborted, // ECONNABORTED
connection_already_in_progress, // EALREADY
connection_refused, // ECONNREFUSED
connection_reset, // ECONNRESET
cross_device_link, // EXDEV
destination_address_required, // EDESTADDRREQ
device_or_resource_busy, // EBUSY
directory_not_empty, // ENOTEMPTY
executable_format_error, // ENOEXEC
file_exists, // EEXIST
file_too_large, // EFBIG
filename_too_long, // ENAMETOOLONG
function_not_supported, // ENOSYS
host_unreachable, // EHOSTUNREACH
identifier_removed, // EIDRM
illegal_byte_sequence, // EILSEQ
inappropriate_io_control_operation, // ENOTTY
interrupted, // EINTR
invalid_argument, // EINVAL
invalid_seek, // ESPIPE
io_error, // EIO
is_a_directory, // EISDIR
message_size, // EMSGSIZE
network_down, // ENETDOWN
network_reset, // ENETRESET
network_unreachable, // ENETUNREACH
no_buffer_space, // ENOBUFS
no_child_process, // ECHILD
no_link, // ENOLINK
no_lock_available, // ENOLCK
no_message_available, // ENODATA
no_message, // ENOMSG
no_protocol_option, // ENOPROTOOPT
no_space_on_device, // ENOSPC
no_stream_resources, // ENOSR
no_such_device_or_address, // ENXIO
no_such_device, // ENODEV
no_such_file_or_directory, // ENOENT
no_such_process, // ESRCH
not_a_directory, // ENOTDIR
not_a_socket, // ENOTSOCK
not_a_stream, // ENOSTR
not_connected, // ENOTCONN
not_enough_memory, // ENOMEM
not_supported, // ENOTSUP
operation_canceled, // ECANCELED
operation_in_progress, // EINPROGRESS
operation_not_permitted, // EPERM
operation_not_supported, // EOPNOTSUPP
operation_would_block, // EWOULDBLOCK
owner_dead, // EOWNERDEAD
permission_denied, // EACCES
protocol_error, // EPROTO
protocol_not_supported, // EPROTONOSUPPORT
read_only_file_system, // EROFS
resource_deadlock_would_occur, // EDEADLK
resource_unavailable_try_again, // EAGAIN
result_out_of_range, // ERANGE
state_not_recoverable, // ENOTRECOVERABLE
stream_timeout, // ETIME
text_file_busy, // ETXTBSY
timed_out, // ETIMEDOUT
too_many_files_open_in_system, // ENFILE
too_many_files_open, // EMFILE
too_many_links, // EMLINK
too_many_symbolic_link_levels, // ELOOP
value_too_large, // EOVERFLOW
wrong_protocol_type // EPROTOTYPE
};
template <> struct is_error_condition_enum<errc> : true_type { }
error_code make_error_code(errc e);
error_condition make_error_condition(errc e);
// Comparison operators:
bool operator==(const error_code& lhs, const error_code& rhs);
bool operator==(const error_code& lhs, const error_condition& rhs);
bool operator==(const error_condition& lhs, const error_code& rhs);
bool operator==(const error_condition& lhs, const error_condition& rhs);
bool operator!=(const error_code& lhs, const error_code& rhs);
bool operator!=(const error_code& lhs, const error_condition& rhs);
bool operator!=(const error_condition& lhs, const error_code& rhs);
bool operator!=(const error_condition& lhs, const error_condition& rhs);
template <> struct hash<std::error_code>;
} // std
*/
#include "llvm/Config/config.h"
#include "llvm/Support/type_traits.h"
#include <cerrno>
#include <string>
namespace llvm {
template <class T, T v>
struct integral_constant {
typedef T value_type;
static const value_type value = v;
typedef integral_constant<T,v> type;
operator value_type() { return value; }
};
typedef integral_constant<bool, true> true_type;
typedef integral_constant<bool, false> false_type;
// is_error_code_enum
template <class Tp> struct is_error_code_enum : public false_type {};
// is_error_condition_enum
template <class Tp> struct is_error_condition_enum : public false_type {};
// Some error codes are not present on all platforms, so we provide equivalents
// for them:
//enum class errc
struct errc {
enum _ {
success = 0,
address_family_not_supported = EAFNOSUPPORT,
address_in_use = EADDRINUSE,
address_not_available = EADDRNOTAVAIL,
already_connected = EISCONN,
argument_list_too_long = E2BIG,
argument_out_of_domain = EDOM,
bad_address = EFAULT,
bad_file_descriptor = EBADF,
bad_message = EBADMSG,
broken_pipe = EPIPE,
connection_aborted = ECONNABORTED,
connection_already_in_progress = EALREADY,
connection_refused = ECONNREFUSED,
connection_reset = ECONNRESET,
cross_device_link = EXDEV,
destination_address_required = EDESTADDRREQ,
device_or_resource_busy = EBUSY,
directory_not_empty = ENOTEMPTY,
executable_format_error = ENOEXEC,
file_exists = EEXIST,
file_too_large = EFBIG,
filename_too_long = ENAMETOOLONG,
function_not_supported = ENOSYS,
host_unreachable = EHOSTUNREACH,
identifier_removed = EIDRM,
illegal_byte_sequence = EILSEQ,
inappropriate_io_control_operation = ENOTTY,
interrupted = EINTR,
invalid_argument = EINVAL,
invalid_seek = ESPIPE,
io_error = EIO,
is_a_directory = EISDIR,
message_size = EMSGSIZE,
network_down = ENETDOWN,
network_reset = ENETRESET,
network_unreachable = ENETUNREACH,
no_buffer_space = ENOBUFS,
no_child_process = ECHILD,
no_link = ENOLINK,
no_lock_available = ENOLCK,
#ifdef ENODATA
no_message_available = ENODATA,
#else
no_message_available = ENOMSG,
#endif
no_message = ENOMSG,
no_protocol_option = ENOPROTOOPT,
no_space_on_device = ENOSPC,
#ifdef ENOSR
no_stream_resources = ENOSR,
#else
no_stream_resources = ENOMEM,
#endif
no_such_device_or_address = ENXIO,
no_such_device = ENODEV,
no_such_file_or_directory = ENOENT,
no_such_process = ESRCH,
not_a_directory = ENOTDIR,
not_a_socket = ENOTSOCK,
#ifdef ENOSTR
not_a_stream = ENOSTR,
#else
not_a_stream = EINVAL,
#endif
not_connected = ENOTCONN,
not_enough_memory = ENOMEM,
not_supported = ENOTSUP,
operation_canceled = ECANCELED,
operation_in_progress = EINPROGRESS,
operation_not_permitted = EPERM,
operation_not_supported = EOPNOTSUPP,
operation_would_block = EWOULDBLOCK,
owner_dead = EOWNERDEAD,
permission_denied = EACCES,
protocol_error = EPROTO,
protocol_not_supported = EPROTONOSUPPORT,
read_only_file_system = EROFS,
resource_deadlock_would_occur = EDEADLK,
resource_unavailable_try_again = EAGAIN,
result_out_of_range = ERANGE,
state_not_recoverable = ENOTRECOVERABLE,
#ifdef ETIME
stream_timeout = ETIME,
#else
stream_timeout = ETIMEDOUT,
#endif
text_file_busy = ETXTBSY,
timed_out = ETIMEDOUT,
too_many_files_open_in_system = ENFILE,
too_many_files_open = EMFILE,
too_many_links = EMLINK,
too_many_symbolic_link_levels = ELOOP,
value_too_large = EOVERFLOW,
wrong_protocol_type = EPROTOTYPE
};
_ v_;
errc(_ v) : v_(v) {}
operator int() const {return v_;}
};
template <> struct is_error_condition_enum<errc> : true_type { };
template <> struct is_error_condition_enum<errc::_> : true_type { };
class error_condition;
class error_code;
// class error_category
class _do_message;
class error_category
{
public:
virtual ~error_category();
private:
error_category();
error_category(const error_category&);// = delete;
error_category& operator=(const error_category&);// = delete;
public:
virtual const char* name() const = 0;
virtual error_condition default_error_condition(int _ev) const;
virtual bool equivalent(int _code, const error_condition& _condition) const;
virtual bool equivalent(const error_code& _code, int _condition) const;
virtual std::string message(int _ev) const = 0;
bool operator==(const error_category& _rhs) const {return this == &_rhs;}
bool operator!=(const error_category& _rhs) const {return !(*this == _rhs);}
bool operator< (const error_category& _rhs) const {return this < &_rhs;}
friend class _do_message;
};
class _do_message : public error_category
{
public:
virtual std::string message(int ev) const;
};
const error_category& generic_category();
const error_category& system_category();
class error_condition
{
int _val_;
const error_category* _cat_;
public:
error_condition() : _val_(0), _cat_(&generic_category()) {}
error_condition(int _val, const error_category& _cat)
: _val_(_val), _cat_(&_cat) {}
template <class E>
error_condition(E _e, typename enable_if_c<
is_error_condition_enum<E>::value
>::type* = 0)
{*this = make_error_condition(_e);}
void assign(int _val, const error_category& _cat) {
_val_ = _val;
_cat_ = &_cat;
}
template <class E>
typename enable_if_c
<
is_error_condition_enum<E>::value,
error_condition&
>::type
operator=(E _e)
{*this = make_error_condition(_e); return *this;}
void clear() {
_val_ = 0;
_cat_ = &generic_category();
}
int value() const {return _val_;}
const error_category& category() const {return *_cat_;}
std::string message() const;
// explicit
operator bool() const {return _val_ != 0;}
};
inline error_condition make_error_condition(errc _e) {
return error_condition(static_cast<int>(_e), generic_category());
}
inline bool operator<(const error_condition& _x, const error_condition& _y) {
return _x.category() < _y.category()
|| _x.category() == _y.category() && _x.value() < _y.value();
}
// error_code
class error_code {
int _val_;
const error_category* _cat_;
public:
error_code() : _val_(0), _cat_(&system_category()) {}
error_code(int _val, const error_category& _cat)
: _val_(_val), _cat_(&_cat) {}
template <class E>
error_code(E _e, typename enable_if_c<
is_error_code_enum<E>::value
>::type* = 0) {
*this = make_error_code(_e);
}
void assign(int _val, const error_category& _cat) {
_val_ = _val;
_cat_ = &_cat;
}
template <class E>
typename enable_if_c
<
is_error_code_enum<E>::value,
error_code&
>::type
operator=(E _e)
{*this = make_error_code(_e); return *this;}
void clear() {
_val_ = 0;
_cat_ = &system_category();
}
int value() const {return _val_;}
const error_category& category() const {return *_cat_;}
error_condition default_error_condition() const
{return _cat_->default_error_condition(_val_);}
std::string message() const;
// explicit
operator bool() const {return _val_ != 0;}
};
inline error_code make_error_code(errc _e) {
return error_code(static_cast<int>(_e), generic_category());
}
inline bool operator<(const error_code& _x, const error_code& _y) {
return _x.category() < _y.category()
|| _x.category() == _y.category() && _x.value() < _y.value();
}
inline bool operator==(const error_code& _x, const error_code& _y) {
return _x.category() == _y.category() && _x.value() == _y.value();
}
inline bool operator==(const error_code& _x, const error_condition& _y) {
return _x.category().equivalent(_x.value(), _y)
|| _y.category().equivalent(_x, _y.value());
}
inline bool operator==(const error_condition& _x, const error_code& _y) {
return _y == _x;
}
inline bool operator==(const error_condition& _x, const error_condition& _y) {
return _x.category() == _y.category() && _x.value() == _y.value();
}
inline bool operator!=(const error_code& _x, const error_code& _y) {
return !(_x == _y);
}
inline bool operator!=(const error_code& _x, const error_condition& _y) {
return !(_x == _y);
}
inline bool operator!=(const error_condition& _x, const error_code& _y) {
return !(_x == _y);
}
inline bool operator!=(const error_condition& _x, const error_condition& _y) {
return !(_x == _y);
}
// system_error
class system_error : public std::runtime_error {
error_code _ec_;
public:
system_error(error_code _ec, const std::string& _what_arg);
system_error(error_code _ec, const char* _what_arg);
system_error(error_code _ec);
system_error(int _ev, const error_category& _ecat,
const std::string& _what_arg);
system_error(int _ev, const error_category& _ecat, const char* _what_arg);
system_error(int _ev, const error_category& _ecat);
~system_error() throw();
const error_code& code() const throw() {return _ec_;}
private:
static std::string _init(const error_code&, std::string);
};
void _throw_system_error(int ev, const char* what_arg);
} // end namespace llvm
#ifdef LLVM_ON_WIN32
#include <Windows.h>
#include <WinError.h>
namespace llvm {
// To construct an error_code after a API error:
//
// error_code( ::GetLastError(), system_category() )
struct windows_error {
enum _ {
success = 0,
// These names and values are based on Windows winerror.h
invalid_function = ERROR_INVALID_FUNCTION,
file_not_found = ERROR_FILE_NOT_FOUND,
path_not_found = ERROR_PATH_NOT_FOUND,
too_many_open_files = ERROR_TOO_MANY_OPEN_FILES,
access_denied = ERROR_ACCESS_DENIED,
invalid_handle = ERROR_INVALID_HANDLE,
arena_trashed = ERROR_ARENA_TRASHED,
not_enough_memory = ERROR_NOT_ENOUGH_MEMORY,
invalid_block = ERROR_INVALID_BLOCK,
bad_environment = ERROR_BAD_ENVIRONMENT,
bad_format = ERROR_BAD_FORMAT,
invalid_access = ERROR_INVALID_ACCESS,
outofmemory = ERROR_OUTOFMEMORY,
invalid_drive = ERROR_INVALID_DRIVE,
current_directory = ERROR_CURRENT_DIRECTORY,
not_same_device = ERROR_NOT_SAME_DEVICE,
no_more_files = ERROR_NO_MORE_FILES,
write_protect = ERROR_WRITE_PROTECT,
bad_unit = ERROR_BAD_UNIT,
not_ready = ERROR_NOT_READY,
bad_command = ERROR_BAD_COMMAND,
crc = ERROR_CRC,
bad_length = ERROR_BAD_LENGTH,
seek = ERROR_SEEK,
not_dos_disk = ERROR_NOT_DOS_DISK,
sector_not_found = ERROR_SECTOR_NOT_FOUND,
out_of_paper = ERROR_OUT_OF_PAPER,
write_fault = ERROR_WRITE_FAULT,
read_fault = ERROR_READ_FAULT,
gen_failure = ERROR_GEN_FAILURE,
sharing_violation = ERROR_SHARING_VIOLATION,
lock_violation = ERROR_LOCK_VIOLATION,
wrong_disk = ERROR_WRONG_DISK,
sharing_buffer_exceeded = ERROR_SHARING_BUFFER_EXCEEDED,
handle_eof = ERROR_HANDLE_EOF,
handle_disk_full= ERROR_HANDLE_DISK_FULL,
rem_not_list = ERROR_REM_NOT_LIST,
dup_name = ERROR_DUP_NAME,
bad_net_path = ERROR_BAD_NETPATH,
network_busy = ERROR_NETWORK_BUSY,
// ...
file_exists = ERROR_FILE_EXISTS,
cannot_make = ERROR_CANNOT_MAKE,
// ...
broken_pipe = ERROR_BROKEN_PIPE,
open_failed = ERROR_OPEN_FAILED,
buffer_overflow = ERROR_BUFFER_OVERFLOW,
disk_full= ERROR_DISK_FULL,
// ...
lock_failed = ERROR_LOCK_FAILED,
busy = ERROR_BUSY,
cancel_violation = ERROR_CANCEL_VIOLATION,
already_exists = ERROR_ALREADY_EXISTS
// ...
// TODO: add more Windows errors
};
_ v_;
windows_error(_ v) : v_(v) {}
explicit windows_error(DWORD v) : v_(_(v)) {}
operator int() const {return v_;}
};
template <> struct is_error_code_enum<windows_error> : true_type { };
template <> struct is_error_code_enum<windows_error::_> : true_type { };
inline error_code make_error_code(windows_error e) {
return error_code(static_cast<int>(e), system_category());
}
} // end namespace llvm
#endif // LLVM_ON_WINDOWS
#endif