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| Rev | Author | Line No. | Line |
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| 14 | pmbaty | 1 | //===- llvm/Support/Errc.h - Defines the llvm::errc enum --------*- C++ -*-===// |
| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | // |
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| 9 | // While std::error_code works OK on all platforms we use, there are some |
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| 10 | // some problems with std::errc that can be avoided by using our own |
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| 11 | // enumeration: |
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| 12 | // |
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| 13 | // * std::errc is a namespace in some implementations. That means that ADL |
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| 14 | // doesn't work and it is sometimes necessary to write std::make_error_code |
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| 15 | // or in templates: |
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| 16 | // using std::make_error_code; |
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| 17 | // make_error_code(...); |
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| 18 | // |
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| 19 | // with this enum it is safe to always just use make_error_code. |
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| 20 | // |
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| 21 | // * Some implementations define fewer names than others. This header has |
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| 22 | // the intersection of all the ones we support. |
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| 23 | // |
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| 24 | // * std::errc is just marked with is_error_condition_enum. This means that |
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| 25 | // common patterns like AnErrorCode == errc::no_such_file_or_directory take |
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| 26 | // 4 virtual calls instead of two comparisons. |
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| 27 | //===----------------------------------------------------------------------===// |
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| 28 | |||
| 29 | #ifndef LLVM_SUPPORT_ERRC_H |
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| 30 | #define LLVM_SUPPORT_ERRC_H |
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| 31 | |||
| 32 | #include <system_error> |
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| 33 | |||
| 34 | namespace llvm { |
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| 35 | enum class errc { |
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| 36 | argument_list_too_long = int(std::errc::argument_list_too_long), |
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| 37 | argument_out_of_domain = int(std::errc::argument_out_of_domain), |
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| 38 | bad_address = int(std::errc::bad_address), |
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| 39 | bad_file_descriptor = int(std::errc::bad_file_descriptor), |
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| 40 | broken_pipe = int(std::errc::broken_pipe), |
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| 41 | device_or_resource_busy = int(std::errc::device_or_resource_busy), |
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| 42 | directory_not_empty = int(std::errc::directory_not_empty), |
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| 43 | executable_format_error = int(std::errc::executable_format_error), |
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| 44 | file_exists = int(std::errc::file_exists), |
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| 45 | file_too_large = int(std::errc::file_too_large), |
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| 46 | filename_too_long = int(std::errc::filename_too_long), |
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| 47 | function_not_supported = int(std::errc::function_not_supported), |
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| 48 | illegal_byte_sequence = int(std::errc::illegal_byte_sequence), |
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| 49 | inappropriate_io_control_operation = |
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| 50 | int(std::errc::inappropriate_io_control_operation), |
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| 51 | interrupted = int(std::errc::interrupted), |
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| 52 | invalid_argument = int(std::errc::invalid_argument), |
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| 53 | invalid_seek = int(std::errc::invalid_seek), |
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| 54 | io_error = int(std::errc::io_error), |
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| 55 | is_a_directory = int(std::errc::is_a_directory), |
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| 56 | no_child_process = int(std::errc::no_child_process), |
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| 57 | no_lock_available = int(std::errc::no_lock_available), |
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| 58 | no_space_on_device = int(std::errc::no_space_on_device), |
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| 59 | no_such_device_or_address = int(std::errc::no_such_device_or_address), |
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| 60 | no_such_device = int(std::errc::no_such_device), |
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| 61 | no_such_file_or_directory = int(std::errc::no_such_file_or_directory), |
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| 62 | no_such_process = int(std::errc::no_such_process), |
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| 63 | not_a_directory = int(std::errc::not_a_directory), |
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| 64 | not_enough_memory = int(std::errc::not_enough_memory), |
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| 65 | not_supported = int(std::errc::not_supported), |
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| 66 | operation_not_permitted = int(std::errc::operation_not_permitted), |
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| 67 | permission_denied = int(std::errc::permission_denied), |
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| 68 | read_only_file_system = int(std::errc::read_only_file_system), |
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| 69 | resource_deadlock_would_occur = int(std::errc::resource_deadlock_would_occur), |
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| 70 | resource_unavailable_try_again = |
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| 71 | int(std::errc::resource_unavailable_try_again), |
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| 72 | result_out_of_range = int(std::errc::result_out_of_range), |
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| 73 | too_many_files_open_in_system = int(std::errc::too_many_files_open_in_system), |
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| 74 | too_many_files_open = int(std::errc::too_many_files_open), |
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| 75 | too_many_links = int(std::errc::too_many_links) |
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| 76 | }; |
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| 77 | |||
| 78 | inline std::error_code make_error_code(errc E) { |
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| 79 | return std::error_code(static_cast<int>(E), std::generic_category()); |
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| 80 | } |
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| 81 | } |
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| 82 | |||
| 83 | namespace std { |
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| 84 | template <> struct is_error_code_enum<llvm::errc> : std::true_type {}; |
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| 85 | } |
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| 86 | #endif |