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https://github.com/c64scene-ar/llvm-6502.git
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7acd886ecf
The idea of this patch is to turn llvm/Support/system_error.h into a transitional header that just brings in the erorr_code api to the llvm namespace. I will remove it shortly afterwards. The cases where the general idea needed some tweaking: * std::errc is a namespace in msvc, so we cannot use "using std::errc". I could add an #ifdef, but there were not that many uses, so I just added std:: to them in this patch. * Template specialization had to be moved to the std namespace in this patch set already. * The msvc implementation of default_error_condition doesn't seem to provide the same transformations as we need. Not too surprising since the standard doesn't actually say what "equivalent" means. I fixed the problem by keeping our old mapping and using it at error_code construction time. Despite these shortcomings I think this is still a good thing. Some reasons: * The different implementations of system_error might improve over time. * It removes 925 lines of code from llvm already. * It removes 6313 bytes from the text segment of the clang binary when it is built with gcc and 2816 bytes when building with clang and libstdc++. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210687 91177308-0d34-0410-b5e6-96231b3b80d8
116 lines
5.7 KiB
C++
116 lines
5.7 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 == std::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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#ifdef _MSC_VER
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#include <winerror.h>
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#include "llvm/Support/WindowsError.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 std::make_error_code(std::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_HANDLE_EOF, value_too_large);
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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_NOT_SAME_DEVICE, cross_device_link);
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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_OPERATION_ABORTED, operation_canceled);
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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(ERROR_SEM_TIMEOUT, timed_out);
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MAP_ERR_TO_COND(WSAEACCES, permission_denied);
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MAP_ERR_TO_COND(WSAEADDRINUSE, address_in_use);
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MAP_ERR_TO_COND(WSAEADDRNOTAVAIL, address_not_available);
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MAP_ERR_TO_COND(WSAEAFNOSUPPORT, address_family_not_supported);
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MAP_ERR_TO_COND(WSAEALREADY, connection_already_in_progress);
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MAP_ERR_TO_COND(WSAEBADF, bad_file_descriptor);
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MAP_ERR_TO_COND(WSAECONNABORTED, connection_aborted);
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MAP_ERR_TO_COND(WSAECONNREFUSED, connection_refused);
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MAP_ERR_TO_COND(WSAECONNRESET, connection_reset);
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MAP_ERR_TO_COND(WSAEDESTADDRREQ, destination_address_required);
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MAP_ERR_TO_COND(WSAEFAULT, bad_address);
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MAP_ERR_TO_COND(WSAEHOSTUNREACH, host_unreachable);
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MAP_ERR_TO_COND(WSAEINPROGRESS, operation_in_progress);
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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(WSAEISCONN, already_connected);
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MAP_ERR_TO_COND(WSAEMFILE, too_many_files_open);
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MAP_ERR_TO_COND(WSAEMSGSIZE, message_size);
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MAP_ERR_TO_COND(WSAENAMETOOLONG, filename_too_long);
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MAP_ERR_TO_COND(WSAENETDOWN, network_down);
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MAP_ERR_TO_COND(WSAENETRESET, network_reset);
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MAP_ERR_TO_COND(WSAENETUNREACH, network_unreachable);
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MAP_ERR_TO_COND(WSAENOBUFS, no_buffer_space);
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MAP_ERR_TO_COND(WSAENOPROTOOPT, no_protocol_option);
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MAP_ERR_TO_COND(WSAENOTCONN, not_connected);
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MAP_ERR_TO_COND(WSAENOTSOCK, not_a_socket);
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MAP_ERR_TO_COND(WSAEOPNOTSUPP, operation_not_supported);
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MAP_ERR_TO_COND(WSAEPROTONOSUPPORT, protocol_not_supported);
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MAP_ERR_TO_COND(WSAEPROTOTYPE, wrong_protocol_type);
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MAP_ERR_TO_COND(WSAETIMEDOUT, timed_out);
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MAP_ERR_TO_COND(WSAEWOULDBLOCK, operation_would_block);
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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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