2014-10-23 07:20:01 +04:00
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// Copyright 2014 Citra Emulator Project
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2014-12-17 08:38:14 +03:00
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// Licensed under GPLv2 or any later version
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2014-10-23 07:20:01 +04:00
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// Refer to the license.txt file included.
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#pragma once
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2015-05-06 10:06:12 +03:00
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#include "common/assert.h"
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2014-10-23 07:20:01 +04:00
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#include "common/bit_field.h"
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2015-01-11 08:42:18 +03:00
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#include "common/common_types.h"
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2021-11-01 17:09:37 +03:00
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#include "common/expected.h"
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2014-10-23 07:20:01 +04:00
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2017-11-01 02:26:11 +03:00
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// All the constants in this file come from http://switchbrew.org/index.php?title=Error_codes
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2014-10-23 07:20:01 +04:00
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/**
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* Identifies the module which caused the error. Error codes can be propagated through a call
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* chain, meaning that this doesn't always correspond to the module where the API call made is
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* contained.
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*/
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enum class ErrorModule : u32 {
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Common = 0,
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Kernel = 1,
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2017-11-01 02:26:11 +03:00
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FS = 2,
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2018-05-23 15:22:42 +03:00
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OS = 3, // used for Memory, Thread, Mutex, Nvidia
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HTCS = 4,
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2017-11-01 02:26:11 +03:00
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NCM = 5,
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DD = 6,
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LR = 8,
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Loader = 9,
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CMIF = 10,
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HIPC = 11,
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PM = 15,
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NS = 16,
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HTC = 18,
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2018-05-20 01:02:24 +03:00
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NCMContent = 20,
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2017-11-01 02:26:11 +03:00
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SM = 21,
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RO = 22,
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SDMMC = 24,
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2018-05-20 01:02:24 +03:00
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OVLN = 25,
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2017-11-01 02:26:11 +03:00
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SPL = 26,
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ETHC = 100,
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I2C = 101,
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2018-05-20 01:02:24 +03:00
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GPIO = 102,
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UART = 103,
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2017-11-01 02:26:11 +03:00
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Settings = 105,
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2018-05-20 01:02:24 +03:00
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WLAN = 107,
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XCD = 108,
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2017-11-01 02:26:11 +03:00
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NIFM = 110,
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2018-05-20 01:02:24 +03:00
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Hwopus = 111,
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Bluetooth = 113,
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VI = 114,
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NFP = 115,
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Time = 116,
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2017-11-01 02:26:11 +03:00
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FGM = 117,
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2018-05-23 15:22:42 +03:00
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OE = 118,
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2018-05-20 01:02:24 +03:00
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PCIe = 120,
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2017-11-01 02:26:11 +03:00
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Friends = 121,
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2018-05-20 01:02:24 +03:00
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BCAT = 122,
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2021-05-16 08:46:30 +03:00
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SSLSrv = 123,
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2017-11-01 02:26:11 +03:00
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Account = 124,
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2018-05-20 01:02:24 +03:00
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News = 125,
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2017-11-01 02:26:11 +03:00
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Mii = 126,
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2018-05-20 01:02:24 +03:00
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NFC = 127,
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2017-11-01 02:26:11 +03:00
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AM = 128,
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PlayReport = 129,
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2018-05-20 01:02:24 +03:00
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AHID = 130,
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Qlaunch = 132,
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2017-11-01 02:26:11 +03:00
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PCV = 133,
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OMM = 134,
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2018-05-20 01:02:24 +03:00
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BPC = 135,
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PSM = 136,
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2017-11-01 02:26:11 +03:00
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NIM = 137,
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PSC = 138,
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2018-05-20 01:02:24 +03:00
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TC = 139,
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2017-11-01 02:26:11 +03:00
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USB = 140,
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2018-05-20 01:02:24 +03:00
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NSD = 141,
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PCTL = 142,
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2017-11-01 02:26:11 +03:00
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BTM = 143,
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2018-05-20 01:02:24 +03:00
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ETicket = 145,
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NGC = 146,
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2017-11-01 02:26:11 +03:00
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ERPT = 147,
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APM = 148,
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2018-05-23 15:22:42 +03:00
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Profiler = 150,
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2018-05-20 01:02:24 +03:00
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ErrorUpload = 151,
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Audio = 153,
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2017-11-01 02:26:11 +03:00
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NPNS = 154,
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2018-05-20 01:02:24 +03:00
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NPNSHTTPSTREAM = 155,
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2017-11-01 02:26:11 +03:00
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ARP = 157,
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2018-05-23 15:22:42 +03:00
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SWKBD = 158,
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BOOT = 159,
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2018-05-20 01:02:24 +03:00
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NFCMifare = 161,
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2017-11-01 02:26:11 +03:00
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UserlandAssert = 162,
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2018-05-20 01:02:24 +03:00
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Fatal = 163,
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NIMShop = 164,
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SPSM = 165,
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BGTC = 167,
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UserlandCrash = 168,
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2018-05-20 01:02:24 +03:00
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SREPO = 180,
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2018-05-23 15:22:42 +03:00
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Dauth = 181,
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2018-05-20 01:02:24 +03:00
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HID = 202,
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LDN = 203,
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Irsensor = 205,
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2017-11-01 02:26:11 +03:00
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Capture = 206,
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2018-05-20 01:02:24 +03:00
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Manu = 208,
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2018-05-23 15:22:42 +03:00
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ATK = 209,
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2018-05-20 01:02:24 +03:00
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GRC = 212,
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Migration = 216,
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MigrationLdcServ = 217,
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2017-11-01 02:26:11 +03:00
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GeneralWebApplet = 800,
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WifiWebAuthApplet = 809,
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WhitelistedApplet = 810,
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ShopN = 811,
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2014-10-23 07:20:01 +04:00
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};
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2019-03-11 01:29:28 +03:00
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/// Encapsulates a Horizon OS error code, allowing it to be separated into its constituent fields.
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2022-06-26 06:44:19 +03:00
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union Result {
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2014-10-23 07:20:01 +04:00
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u32 raw;
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2017-11-01 02:26:11 +03:00
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BitField<0, 9, ErrorModule> module;
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BitField<9, 13, u32> description;
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constexpr explicit Result(u32 raw_) : raw(raw_) {}
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2017-05-21 06:40:13 +03:00
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constexpr Result(ErrorModule module_, u32 description_)
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: raw(module.FormatValue(module_) | description.FormatValue(description_)) {}
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2014-10-23 07:20:01 +04:00
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2021-06-05 13:05:39 +03:00
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[[nodiscard]] constexpr bool IsSuccess() const {
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2018-02-19 08:30:30 +03:00
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return raw == 0;
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2014-10-23 07:20:01 +04:00
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}
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2021-06-05 13:05:39 +03:00
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[[nodiscard]] constexpr bool IsError() const {
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return !IsSuccess();
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2014-10-23 07:20:01 +04:00
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}
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};
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[[nodiscard]] constexpr bool operator==(const Result& a, const Result& b) {
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return a.raw == b.raw;
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}
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2022-06-26 06:44:19 +03:00
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[[nodiscard]] constexpr bool operator!=(const Result& a, const Result& b) {
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return !operator==(a, b);
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2014-10-23 07:20:01 +04:00
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}
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// Convenience functions for creating some common kinds of errors:
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2022-06-26 06:44:19 +03:00
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/// The default success `Result`.
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constexpr Result ResultSuccess(0);
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2014-10-23 07:20:01 +04:00
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2019-11-12 12:45:21 +03:00
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/**
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* Placeholder result code used for unknown error codes.
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*
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* @note This should only be used when a particular error code
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* is not known yet.
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*/
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constexpr Result ResultUnknown(UINT32_MAX);
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2019-11-12 12:45:21 +03:00
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2022-05-02 10:15:10 +03:00
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/**
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* A ResultRange defines an inclusive range of error descriptions within an error module.
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2022-06-26 06:44:19 +03:00
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* This can be used to check whether the description of a given Result falls within the range.
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* The conversion function returns a Result with its description set to description_start.
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2022-05-02 10:15:10 +03:00
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*
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* An example of how it could be used:
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* \code
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* constexpr ResultRange ResultCommonError{ErrorModule::Common, 0, 9999};
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*
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* Result Example(int value) {
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* const Result result = OtherExample(value);
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*
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* // This will only evaluate to true if result.module is ErrorModule::Common and
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* // result.description is in between 0 and 9999 inclusive.
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* if (ResultCommonError.Includes(result)) {
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* // This returns Result{ErrorModule::Common, 0};
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* return ResultCommonError;
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* }
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*
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* return ResultSuccess;
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* }
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* \endcode
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*/
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class ResultRange {
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public:
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consteval ResultRange(ErrorModule module, u32 description_start, u32 description_end_)
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: code{module, description_start}, description_end{description_end_} {}
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2022-06-26 06:44:19 +03:00
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[[nodiscard]] constexpr operator Result() const {
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return code;
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}
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2022-06-26 06:44:19 +03:00
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[[nodiscard]] constexpr bool Includes(Result other) const {
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2022-05-02 10:15:10 +03:00
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return code.module == other.module && code.description <= other.description &&
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other.description <= description_end;
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}
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private:
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Result code;
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2022-05-02 10:15:10 +03:00
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u32 description_end;
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};
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2014-10-23 07:20:01 +04:00
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/**
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* This is an optional value type. It holds a `Result` and, if that code is ResultSuccess, it
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2021-11-01 17:38:11 +03:00
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* also holds a result of type `T`. If the code is an error code (not ResultSuccess), then trying
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* to access the inner value with operator* is undefined behavior and will assert with Unwrap().
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* Users of this class must be cognizant to check the status of the ResultVal with operator bool(),
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* Code(), Succeeded() or Failed() prior to accessing the inner value.
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2014-10-23 07:20:01 +04:00
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*
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* An example of how it could be used:
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* \code
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* ResultVal<int> Frobnicate(float strength) {
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* if (strength < 0.f || strength > 1.0f) {
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* // Can't frobnicate too weakly or too strongly
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* return Result{ErrorModule::Common, 1};
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2014-10-23 07:20:01 +04:00
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* } else {
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* // Frobnicated! Give caller a cookie
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2021-11-03 00:23:19 +03:00
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* return 42;
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2014-10-23 07:20:01 +04:00
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* }
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* }
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* \endcode
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*
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* \code
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* auto frob_result = Frobnicate(0.75f);
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2014-10-23 07:20:01 +04:00
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* if (frob_result) {
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* // Frobbed ok
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* printf("My cookie is %d\n", *frob_result);
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* } else {
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* printf("Guess I overdid it. :( Error code: %ux\n", frob_result.Code().raw);
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2014-10-23 07:20:01 +04:00
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* }
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* \endcode
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*/
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template <typename T>
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class ResultVal {
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public:
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constexpr ResultVal() : expected{} {}
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constexpr ResultVal(Result code) : expected{Common::Unexpected(code)} {}
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2022-05-03 09:00:29 +03:00
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constexpr ResultVal(ResultRange range) : expected{Common::Unexpected(range)} {}
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template <typename U>
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constexpr ResultVal(U&& val) : expected{std::forward<U>(val)} {}
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template <typename... Args>
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constexpr ResultVal(Args&&... args) : expected{std::in_place, std::forward<Args>(args)...} {}
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~ResultVal() = default;
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constexpr ResultVal(const ResultVal&) = default;
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constexpr ResultVal(ResultVal&&) = default;
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2014-10-23 07:20:01 +04:00
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ResultVal& operator=(const ResultVal&) = default;
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ResultVal& operator=(ResultVal&&) = default;
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2014-10-23 07:20:01 +04:00
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2021-11-01 17:09:37 +03:00
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[[nodiscard]] constexpr explicit operator bool() const noexcept {
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return expected.has_value();
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2014-10-23 07:20:01 +04:00
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}
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[[nodiscard]] constexpr Result Code() const {
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return expected.has_value() ? ResultSuccess : expected.error();
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2021-10-28 10:52:21 +03:00
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}
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2021-11-01 17:09:37 +03:00
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[[nodiscard]] constexpr bool Succeeded() const {
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return expected.has_value();
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2014-10-23 07:20:01 +04:00
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}
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[[nodiscard]] constexpr bool Failed() const {
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return !expected.has_value();
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2016-09-18 03:38:01 +03:00
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}
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2014-10-23 07:20:01 +04:00
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[[nodiscard]] constexpr T* operator->() {
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return std::addressof(expected.value());
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2016-09-18 03:38:01 +03:00
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}
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2021-11-01 17:09:37 +03:00
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[[nodiscard]] constexpr const T* operator->() const {
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return std::addressof(expected.value());
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2016-09-18 03:38:01 +03:00
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}
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2014-10-23 07:20:01 +04:00
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2021-11-01 17:09:37 +03:00
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[[nodiscard]] constexpr T& operator*() & {
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return *expected;
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2016-09-18 03:38:01 +03:00
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}
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2014-10-23 07:20:01 +04:00
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2021-11-01 17:09:37 +03:00
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[[nodiscard]] constexpr const T& operator*() const& {
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return *expected;
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2016-09-18 03:38:01 +03:00
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}
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2021-11-01 17:09:37 +03:00
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[[nodiscard]] constexpr T&& operator*() && {
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return *expected;
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2016-09-18 03:38:01 +03:00
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}
|
2021-11-01 17:09:37 +03:00
|
|
|
|
|
|
|
[[nodiscard]] constexpr const T&& operator*() const&& {
|
|
|
|
return *expected;
|
2016-09-18 03:38:01 +03:00
|
|
|
}
|
2021-11-01 17:09:37 +03:00
|
|
|
|
|
|
|
[[nodiscard]] constexpr T& Unwrap() & {
|
|
|
|
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
|
|
|
return expected.value();
|
2016-09-18 03:38:01 +03:00
|
|
|
}
|
2014-10-23 07:20:01 +04:00
|
|
|
|
2021-11-01 17:09:37 +03:00
|
|
|
[[nodiscard]] constexpr const T& Unwrap() const& {
|
|
|
|
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
|
|
|
return expected.value();
|
2014-10-23 07:20:01 +04:00
|
|
|
}
|
|
|
|
|
2021-11-01 17:09:37 +03:00
|
|
|
[[nodiscard]] constexpr T&& Unwrap() && {
|
2015-01-21 04:16:47 +03:00
|
|
|
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
2021-11-01 17:09:37 +03:00
|
|
|
return std::move(expected.value());
|
2015-01-11 08:42:18 +03:00
|
|
|
}
|
|
|
|
|
2021-11-01 17:09:37 +03:00
|
|
|
[[nodiscard]] constexpr const T&& Unwrap() const&& {
|
2017-06-19 04:49:46 +03:00
|
|
|
ASSERT_MSG(Succeeded(), "Tried to Unwrap empty ResultVal");
|
2021-11-01 17:09:37 +03:00
|
|
|
return std::move(expected.value());
|
|
|
|
}
|
|
|
|
|
|
|
|
template <typename U>
|
|
|
|
[[nodiscard]] constexpr T ValueOr(U&& v) const& {
|
|
|
|
return expected.value_or(v);
|
|
|
|
}
|
|
|
|
|
|
|
|
template <typename U>
|
|
|
|
[[nodiscard]] constexpr T ValueOr(U&& v) && {
|
|
|
|
return expected.value_or(v);
|
2017-06-19 04:49:46 +03:00
|
|
|
}
|
|
|
|
|
2014-10-23 07:20:01 +04:00
|
|
|
private:
|
2022-05-03 09:18:28 +03:00
|
|
|
// TODO (Morph): Replace this with C++23 std::expected.
|
2022-06-26 06:44:19 +03:00
|
|
|
Common::Expected<T, Result> expected;
|
2014-10-23 07:20:01 +04:00
|
|
|
};
|
|
|
|
|
2015-01-11 08:42:18 +03:00
|
|
|
/**
|
|
|
|
* Check for the success of `source` (which must evaluate to a ResultVal). If it succeeds, unwraps
|
|
|
|
* the contained value and assigns it to `target`, which can be either an l-value expression or a
|
|
|
|
* variable declaration. If it fails the return code is returned from the current function. Thus it
|
|
|
|
* can be used to cascade errors out, achieving something akin to exception handling.
|
|
|
|
*/
|
2016-09-18 03:38:01 +03:00
|
|
|
#define CASCADE_RESULT(target, source) \
|
|
|
|
auto CONCAT2(check_result_L, __LINE__) = source; \
|
2020-08-14 16:04:44 +03:00
|
|
|
if (CONCAT2(check_result_L, __LINE__).Failed()) { \
|
2016-09-18 03:38:01 +03:00
|
|
|
return CONCAT2(check_result_L, __LINE__).Code(); \
|
2020-08-14 16:04:44 +03:00
|
|
|
} \
|
2016-09-18 03:38:01 +03:00
|
|
|
target = std::move(*CONCAT2(check_result_L, __LINE__))
|
2017-06-06 09:13:58 +03:00
|
|
|
|
|
|
|
/**
|
2022-06-26 06:44:19 +03:00
|
|
|
* Analogous to CASCADE_RESULT, but for a bare Result. The code will be propagated if
|
2017-06-06 09:13:58 +03:00
|
|
|
* non-success, or discarded otherwise.
|
|
|
|
*/
|
|
|
|
#define CASCADE_CODE(source) \
|
2020-08-14 16:04:44 +03:00
|
|
|
do { \
|
|
|
|
auto CONCAT2(check_result_L, __LINE__) = source; \
|
|
|
|
if (CONCAT2(check_result_L, __LINE__).IsError()) { \
|
|
|
|
return CONCAT2(check_result_L, __LINE__); \
|
|
|
|
} \
|
|
|
|
} while (false)
|
2021-05-31 11:15:49 +03:00
|
|
|
|
|
|
|
#define R_SUCCEEDED(res) (res.IsSuccess())
|
|
|
|
|
|
|
|
/// Evaluates a boolean expression, and succeeds if that expression is true.
|
2021-05-21 08:05:04 +03:00
|
|
|
#define R_SUCCEED_IF(expr) R_UNLESS(!(expr), ResultSuccess)
|
2021-05-31 11:15:49 +03:00
|
|
|
|
|
|
|
/// Evaluates a boolean expression, and returns a result unless that expression is true.
|
|
|
|
#define R_UNLESS(expr, res) \
|
|
|
|
{ \
|
|
|
|
if (!(expr)) { \
|
|
|
|
if (res.IsError()) { \
|
|
|
|
LOG_ERROR(Kernel, "Failed with result: {}", res.raw); \
|
|
|
|
} \
|
|
|
|
return res; \
|
|
|
|
} \
|
|
|
|
}
|
|
|
|
|
|
|
|
/// Evaluates an expression that returns a result, and returns the result if it would fail.
|
|
|
|
#define R_TRY(res_expr) \
|
|
|
|
{ \
|
|
|
|
const auto _tmp_r_try_rc = (res_expr); \
|
|
|
|
if (_tmp_r_try_rc.IsError()) { \
|
|
|
|
return _tmp_r_try_rc; \
|
|
|
|
} \
|
|
|
|
}
|