1 //===- llvm/Support/Errc.h - Defines the llvm::errc enum --------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 // 10 // While std::error_code works OK on all platforms we use, there are some 11 // some problems with std::errc that can be avoided by using our own 12 // enumeration: 13 // 14 // * std::errc is a namespace in some implementations. That meas that ADL 15 // doesn't work and it is sometimes necessary to write std::make_error_code 16 // or in templates: 17 // using std::make_error_code; 18 // make_error_code(...); 19 // 20 // with this enum it is safe to always just use make_error_code. 21 // 22 // * Some implementations define fewer names than others. This header has 23 // the intersection of all the ones we support. 24 // 25 // * std::errc is just marked with is_error_condition_enum. This means that 26 // common patters like AnErrorCode == errc::no_such_file_or_directory take 27 // 4 virtual calls instead of two comparisons. 28 //===----------------------------------------------------------------------===// 29 30 #ifndef LLVM_SUPPORT_ERRC_H 31 #define LLVM_SUPPORT_ERRC_H 32 33 #include <system_error> 34 35 namespace llvm { 36 enum class errc { 37 argument_list_too_long = int(std::errc::argument_list_too_long), 38 argument_out_of_domain = int(std::errc::argument_out_of_domain), 39 bad_address = int(std::errc::bad_address), 40 bad_file_descriptor = int(std::errc::bad_file_descriptor), 41 broken_pipe = int(std::errc::broken_pipe), 42 device_or_resource_busy = int(std::errc::device_or_resource_busy), 43 directory_not_empty = int(std::errc::directory_not_empty), 44 executable_format_error = int(std::errc::executable_format_error), 45 file_exists = int(std::errc::file_exists), 46 file_too_large = int(std::errc::file_too_large), 47 filename_too_long = int(std::errc::filename_too_long), 48 function_not_supported = int(std::errc::function_not_supported), 49 illegal_byte_sequence = int(std::errc::illegal_byte_sequence), 50 inappropriate_io_control_operation = 51 int(std::errc::inappropriate_io_control_operation), 52 interrupted = int(std::errc::interrupted), 53 invalid_argument = int(std::errc::invalid_argument), 54 invalid_seek = int(std::errc::invalid_seek), 55 io_error = int(std::errc::io_error), 56 is_a_directory = int(std::errc::is_a_directory), 57 no_child_process = int(std::errc::no_child_process), 58 no_lock_available = int(std::errc::no_lock_available), 59 no_space_on_device = int(std::errc::no_space_on_device), 60 no_such_device_or_address = int(std::errc::no_such_device_or_address), 61 no_such_device = int(std::errc::no_such_device), 62 no_such_file_or_directory = int(std::errc::no_such_file_or_directory), 63 no_such_process = int(std::errc::no_such_process), 64 not_a_directory = int(std::errc::not_a_directory), 65 not_enough_memory = int(std::errc::not_enough_memory), 66 operation_not_permitted = int(std::errc::operation_not_permitted), 67 permission_denied = int(std::errc::permission_denied), 68 read_only_file_system = int(std::errc::read_only_file_system), 69 resource_deadlock_would_occur = int(std::errc::resource_deadlock_would_occur), 70 resource_unavailable_try_again = 71 int(std::errc::resource_unavailable_try_again), 72 result_out_of_range = int(std::errc::result_out_of_range), 73 too_many_files_open_in_system = int(std::errc::too_many_files_open_in_system), 74 too_many_files_open = int(std::errc::too_many_files_open), 75 too_many_links = int(std::errc::too_many_links) 76 }; 77 78 inline std::error_code make_error_code(errc E) { 79 return std::error_code(static_cast<int>(E), std::generic_category()); 80 } 81 } 82 83 namespace std { 84 template <> struct is_error_code_enum<llvm::errc> : std::true_type {}; 85 } 86 #endif 87
