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d8b23109b2
While std::error_code itself seems to work OK in all platforms, there are few annoying differences with regards to the std::errc enumeration. This patch adds a simple llvm enumeration, which will hopefully avoid build breakages in other platforms and surprises as we get more uses of std::error_code. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210920 91177308-0d34-0410-b5e6-96231b3b80d8
92 lines
4.2 KiB
C++
92 lines
4.2 KiB
C++
//===-- WindowsError.cpp - Support for mapping windows errors to posix-----===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file implements a mapping from windows errors to posix ones.
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// The standard doesn't define what the equivalence is from system
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// errors to generic ones. The one implemented in msvc is too conservative
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// for llvm, so we do an extra mapping when constructing an error_code
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// from an windows error. This allows the rest of llvm to simple checks
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// like "EC == errc::file_exists" and have it work on both posix and
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// windows.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/Support/Errc.h"
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#include "llvm/Support/WindowsError.h"
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#include "llvm/Config/llvm-config.h"
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#ifdef LLVM_ON_WIN32
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#include <winerror.h>
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// I'd rather not double the line count of the following.
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#define MAP_ERR_TO_COND(x, y) \
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case x: \
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return make_error_code(errc::y)
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std::error_code llvm::mapWindowsError(unsigned EV) {
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switch (EV) {
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MAP_ERR_TO_COND(ERROR_ACCESS_DENIED, permission_denied);
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MAP_ERR_TO_COND(ERROR_ALREADY_EXISTS, file_exists);
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MAP_ERR_TO_COND(ERROR_BAD_UNIT, no_such_device);
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MAP_ERR_TO_COND(ERROR_BUFFER_OVERFLOW, filename_too_long);
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MAP_ERR_TO_COND(ERROR_BUSY, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_BUSY_DRIVE, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_CANNOT_MAKE, permission_denied);
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MAP_ERR_TO_COND(ERROR_CANTOPEN, io_error);
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MAP_ERR_TO_COND(ERROR_CANTREAD, io_error);
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MAP_ERR_TO_COND(ERROR_CANTWRITE, io_error);
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MAP_ERR_TO_COND(ERROR_CURRENT_DIRECTORY, permission_denied);
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MAP_ERR_TO_COND(ERROR_DEV_NOT_EXIST, no_such_device);
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MAP_ERR_TO_COND(ERROR_DEVICE_IN_USE, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_DIR_NOT_EMPTY, directory_not_empty);
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MAP_ERR_TO_COND(ERROR_DIRECTORY, invalid_argument);
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MAP_ERR_TO_COND(ERROR_DISK_FULL, no_space_on_device);
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MAP_ERR_TO_COND(ERROR_FILE_EXISTS, file_exists);
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MAP_ERR_TO_COND(ERROR_FILE_NOT_FOUND, no_such_file_or_directory);
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MAP_ERR_TO_COND(ERROR_HANDLE_DISK_FULL, no_space_on_device);
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MAP_ERR_TO_COND(ERROR_INVALID_ACCESS, permission_denied);
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MAP_ERR_TO_COND(ERROR_INVALID_DRIVE, no_such_device);
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MAP_ERR_TO_COND(ERROR_INVALID_FUNCTION, function_not_supported);
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MAP_ERR_TO_COND(ERROR_INVALID_HANDLE, invalid_argument);
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MAP_ERR_TO_COND(ERROR_INVALID_NAME, invalid_argument);
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MAP_ERR_TO_COND(ERROR_LOCK_VIOLATION, no_lock_available);
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MAP_ERR_TO_COND(ERROR_LOCKED, no_lock_available);
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MAP_ERR_TO_COND(ERROR_NEGATIVE_SEEK, invalid_argument);
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MAP_ERR_TO_COND(ERROR_NOACCESS, permission_denied);
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MAP_ERR_TO_COND(ERROR_NOT_ENOUGH_MEMORY, not_enough_memory);
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MAP_ERR_TO_COND(ERROR_NOT_READY, resource_unavailable_try_again);
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MAP_ERR_TO_COND(ERROR_OPEN_FAILED, io_error);
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MAP_ERR_TO_COND(ERROR_OPEN_FILES, device_or_resource_busy);
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MAP_ERR_TO_COND(ERROR_OUTOFMEMORY, not_enough_memory);
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MAP_ERR_TO_COND(ERROR_PATH_NOT_FOUND, no_such_file_or_directory);
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MAP_ERR_TO_COND(ERROR_BAD_NETPATH, no_such_file_or_directory);
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MAP_ERR_TO_COND(ERROR_READ_FAULT, io_error);
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MAP_ERR_TO_COND(ERROR_RETRY, resource_unavailable_try_again);
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MAP_ERR_TO_COND(ERROR_SEEK, io_error);
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MAP_ERR_TO_COND(ERROR_SHARING_VIOLATION, permission_denied);
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MAP_ERR_TO_COND(ERROR_TOO_MANY_OPEN_FILES, too_many_files_open);
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MAP_ERR_TO_COND(ERROR_WRITE_FAULT, io_error);
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MAP_ERR_TO_COND(ERROR_WRITE_PROTECT, permission_denied);
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MAP_ERR_TO_COND(WSAEACCES, permission_denied);
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MAP_ERR_TO_COND(WSAEBADF, bad_file_descriptor);
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MAP_ERR_TO_COND(WSAEFAULT, bad_address);
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MAP_ERR_TO_COND(WSAEINTR, interrupted);
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MAP_ERR_TO_COND(WSAEINVAL, invalid_argument);
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MAP_ERR_TO_COND(WSAEMFILE, too_many_files_open);
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MAP_ERR_TO_COND(WSAENAMETOOLONG, filename_too_long);
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default:
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return std::error_code(EV, std::system_category());
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}
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}
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#endif
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