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author | Jack <66967891+ASpoonPlaysGames@users.noreply.github.com> | 2023-12-27 00:32:01 +0000 |
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committer | GitHub <noreply@github.com> | 2023-12-27 01:32:01 +0100 |
commit | f5ab6fb5e8be7b73e6003d4145081d5e0c0ce287 (patch) | |
tree | 90f2c6a4885dbd181799e2325cf33588697674e1 /NorthstarDLL/core/structs.h | |
parent | bb8ed59f6891b1196c5f5bbe7346cd171c8215fa (diff) | |
download | NorthstarLauncher-f5ab6fb5e8be7b73e6003d4145081d5e0c0ce287.tar.gz NorthstarLauncher-f5ab6fb5e8be7b73e6003d4145081d5e0c0ce287.zip |
Folder restructuring from primedev (#624)v1.21.2-rc3v1.21.2
Copies of over the primedev folder structure for easier cherry-picking of further changes
Co-authored-by: F1F7Y <filip.bartos07@proton.me>
Diffstat (limited to 'NorthstarDLL/core/structs.h')
-rw-r--r-- | NorthstarDLL/core/structs.h | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/NorthstarDLL/core/structs.h b/NorthstarDLL/core/structs.h deleted file mode 100644 index 037233a6..00000000 --- a/NorthstarDLL/core/structs.h +++ /dev/null @@ -1,77 +0,0 @@ -#pragma once -//clang-format off -// About this file: -// This file contains several macros used to define reversed structs -// The reason we use these macros is to make it easier to update existing structs -// when new fields are reversed -// This means we dont have to manually add padding, and recalculate when updating - -// Technical note: -// While functionally, these structs act like a regular struct, they are actually -// defined as unions with anonymous structs in them. -// This means that each field is essentially an offset into a union. -// We acknowledge that this goes against C++'s active-member guideline for unions -// However, this is not such a big deal here as these structs will not be constructed - -// Usage: -// To use these macros, define a struct like so: -/* -OFFSET_STRUCT(Name) -{ - STRUCT_SIZE(0x100) // Total in-memory struct size - FIELD(0x0, int field) // offset, signature -} -*/ - -#define OFFSET_STRUCT(name) union name -#define STRUCT_SIZE(size) char __size[size]; -#define STRUCT_FIELD_OFFSET(offset, signature) \ - struct \ - { \ - char CONCAT2(pad, __LINE__)[offset]; \ - signature; \ - }; - -// Special case for a 0-offset field -#define STRUCT_FIELD_NOOFFSET(offset, signature) signature; - -// Just puts two tokens next to each other, but -// allows us to force the preprocessor to do another pass -#define FX(f, x) f x - -// Macro used to detect if the given offset is 0 or not -#define TEST_0 , -// MSVC does no preprocessing of integer literals. -// On other compilers `0x0` gets processed into `0` -#define TEST_0x0 , - -// Concats the first and third argument and drops everything else -// Used with preprocessor expansion in later passes to move the third argument to the fourth and change the value -#define ZERO_P_I(a, b, c, ...) a##c - -// We use FX to prepare to use ZERO_P_I. -// The right block contains 3 arguments: -// NIF_ -// CONCAT2(TEST_, offset) -// 1 -// -// If offset is not 0 (or 0x0) the preprocessor replaces -// it with nothing and the third argument stays 1 -// -// If the offset is 0, TEST_0 expands to , and 1 becomes the fourth argument -// -// With those arguments we call ZERO_P_I and the first and third arugment get concat. -// We either end up with: -// NIF_ (if offset is 0) or -// NIF_1 (if offset is not 0) -#define IF_ZERO(m) FX(ZERO_P_I, (NIF_, CONCAT2(TEST_, m), 1)) - -// These macros are used to branch after we processed if the offset is zero or not -#define NIF_(t, ...) t -#define NIF_1(t, ...) __VA_ARGS__ - -// FIELD(S), generates an anonymous struct when a non 0 offset is given, otherwise just a signature -#define FIELD(offset, signature) IF_ZERO(offset)(STRUCT_FIELD_NOOFFSET, STRUCT_FIELD_OFFSET)(offset, signature) -#define FIELDS FIELD - -//clang-format on |