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Additionally, split it into two versions (for IsIntegral<T> -- asking
to place value into register and for !IsIntegral<T> -- asking to place
value into memory with memory clobber), so that Clang is no more
completely confused about `taint_for_optimizer(AK::StringView&)`.
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For whatever reason, when CLion does its code indexing thing, it doesn't
define __clang__ despite using Clang. This causes it to run into various
problems that we've solved by checking for Clang.
Since CLion does define __CLION_IDE__ (or sometimes __CLION_IDE_, no
idea why but I have seen this issue locally), let's make that part of
the AK_COMPILER_CLANG check.
This makes CLion stop highlighting various things as errors.
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This function will be used in the next commit in "BigIntBase.h".
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This was removed in a910961f37d1da9dafb6385e348266746354cf98 in favour
of the more general USING_AK_GLOBALLY #define, but Ladybird (and
probably other projects) depend on the smaller hammer to include STL
headers and keep the USING_AK_GLOBALLY behaviour, so put it back and
preserve its behaviour.
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Note that this still keeps the old behaviour of putting things in std by
default on serenity so the tools can be happy, but if USING_AK_GLOBALLY
is unset, AK behaves like a good citizen and doesn't try to put things
in the ::std namespace.
std::nothrow_t and its friends get to stay because I'm being told that
compilers assume things about them and I can't yeet them into a
different namespace...for now.
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A couple headers expected names to be in the global namespace, qualify
those names to make sure they're resolved even when the names are not
exported.
One header placed its functions in the global namespace, move those to
the AK namespace to make the concepts resolve.
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https://github.com/SerenityOS/serenity/pull/15654#issuecomment-1322554496
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This patch adds the `USING_AK_GLOBALLY` macro which is enabled by
default, but can be overridden by build flags.
This is a step towards integrating Jakt and AK types.
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Doesn't use them in libc headers so that those don't have to pull in
AK/Platform.h.
AK_COMPILER_GCC is set _only_ for gcc, not for clang too. (__GNUC__ is
defined in clang builds as well.) Using AK_COMPILER_GCC simplifies
things some.
AK_COMPILER_CLANG isn't as much of a win, other than that it's
consistent with AK_COMPILER_GCC.
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If we didn't define our own `move` and `forward` and inject it into the
`std` namespace, then we would error just after trying to `using` those,
if no one has included it before. Now, we will include `utility` from
the STD if we aren't replacing the `std`.
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cert-dcl50-cpp: No variadic functions, suppressed in RefCounted and
ThreadSafeRefCounted for implementing the magic one_ref_left and
will_be_destroyed functions.
cert-dcl58-cpp: No opening ::std, suppressed in the places we put names
in ::std to aid tools (move, forward, nullptr_t, align_val_t, etc).
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Using `l` for long double causes a clang-tidy warning, so use all caps
suffixes for all of the AK::abs() overloads for consistency. Also, avoid
leaking the internal __DEFINE_GENERIC_ABS macro.
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This introduces a new define AK_DONT_REPLACE_STD that disables our own
implementation of std::move and std::forward. Some ports include both
STL and AK headers which causes conflicts when trying to resolve those
functions. The port can define AK_DONT_REPLACE_STD before including
Serenity headers in that case.
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Same as we already did with move(). This allows compiler diagnostics
and static analyzers like SonarCloud to detect more issues.
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When swapping the same object, we could end up with a double-free error.
This was found while quick-sorting a Vector of Variants holding complex
types, reproduced by the new swap_same_complex_object test case.
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Previously, in LibGFX's `Point` class, calculated distances were passed
to the integer `abs` function, even if the stored type was a float. This
caused the value to unexpectedly be truncated. Luckily, this API was not
used with floating point types, but that can change in the future, so
why not fix it now :^)
Since we are in C++, we can use function overloading to make things
easy, and to automatically use the right version.
This is even better than the LibC/LibM functions, as using a bit of
hackery, they are able to be constant-evaluated. They use compiler
intrinsics, so they do not depend on external code and the compiler can
emit the most optimized code by default.
Since we aren't using the C++ standard library's trick of importing
everything into the `AK` namespace, this `abs` function cannot be
exported to the global namespace, as the names would clash.
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Also add some tests to ensure that they _remain_ constexpr.
In general, any runtime assertions, weirdo C casts, pointer aliasing,
and such shenanigans should be gated behind the (helpfully newly added)
AK::is_constant_evaluated() function when the intention is to write
constexpr-capable code.
a.k.a. deliver promises of constexpr-ness :P
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It was really annoying to `static_cast` the arguments to be the same
type, so instead of doing that, just convert the second one to the first
one, and let the compiler warn about sign differences and truncation.
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This is basically the same thing as `std::to_underlying(Enum)`.
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Previously, AK::Function would accept _any_ callable type, and try to
call it when called, first with the given set of arguments, then with
zero arguments, and if all of those failed, it would simply not call the
function and **return a value-constructed Out type**.
This lead to many, many, many hard to debug situations when someone
forgot a `const` in their lambda argument types, and many cases of
people taking zero arguments in their lambdas to ignore them.
This commit reworks the Function interface to not include any such
surprising behaviour, if your function instance is not callable with
the declared argument set of the Function, it can simply not be
assigned to that Function instance, end of story.
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The previous implementation hardcoded unsigned, when the same logic
easily extends to unsigned long, signed types, and other Integral types.
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SPDX License Identifiers are a more compact / standardized
way of representing file license information.
See: https://spdx.dev/resources/use/#identifiers
This was done with the `ambr` search and replace tool.
ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
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This should allow creating intrusive lists that have smart pointers,
while remaining free (compared to the impl before this commit) when
holding raw pointers :^)
As a sidenote, this also adds a `RawPtr<T>` type, which is just
equivalent to `T*`.
Note that this does not actually use such functionality, but is only
expected to pave the way for #6369, to replace NonnullRefPtrVector<T>
with intrusive lists.
As it is with zero-cost things, this makes the interface a bit less nice
by requiring the type name of what an `IntrusiveListNode` holds (and
optionally its container, if not RawPtr), and also requiring the type of
the container (normally `RawPtr`) on the `IntrusiveList` instance.
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This commit makes the user-facing StdLibExtras templates and utilities
arguably more nice-looking by removing the need to reach into the
wrapper structs generated by them to get the value/type needed.
The C++ standard library had to invent `_v` and `_t` variants (likely
because of backwards compat), but we don't need to cater to any codebase
except our own, so might as well have good things for free. :^)
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This makes GCC emit warnings about redundant and pessimizing moves.
It also allows static analyzers like clang-tidy to detect common bugs
like use-after-move.
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I needed these meta-programming type traits while working on something else.
Add basic support for these two type traits as well as some tests.
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(...and ASSERT_NOT_REACHED => VERIFY_NOT_REACHED)
Since all of these checks are done in release builds as well,
let's rename them to VERIFY to prevent confusion, as everyone is
used to assertions being compiled out in release.
We can introduce a new ASSERT macro that is specifically for debug
checks, but I'm doing this wholesale conversion first since we've
accumulated thousands of these already, and it's not immediately
obvious which ones are suitable for ASSERT.
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Thanks to @trflynn89 for the neat implicit consteval ctor trick!
This allows us to basically slap `CheckedFormatString` on any
formatting function, and have its format argument checked at compiletime.
Note that there is a validator bug where it doesn't parse inner replaced
fields like `{:~>{}}` correctly (what should be 'left align with next
argument as size' is parsed as `{:~>{` following a literal closing
brace), so the compiletime checks are disabled on these temporarily by
forcing them to be StringViews.
This commit also removes the now unused `AK::StringLiteral` type (which
was introduced for use with NTTP strings).
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This checks the following things:
- No unclosed braces in format string
`dbgln("a:{}}", a)` where the '}}' would be interpreted as a
literal '}'
`dbgln("a:{", a)` where someone with a faulty keyboard like mine
could generate
- No extra closed braces in format string
`dbgln("a:{{}", a)` where the '{{' would interpreted as a literal '{'
`dbgln("a:}", a)` where someone with a faulty keyboard could
generate
- No references to nonexistent arguments
`dbgln("a:{} b:{}", a)` where the value of `b` is not in the
arguments list
- No unconsumed argument
`dbgln("a:{1}", not_used, 1)` where `not_used` is extraneous
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We stopped using that warning ages ago since it confused the compiler.
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Use TypeLists to add test for IsIntegral, IsFloatingPoint, IsVoid,
IsNullPointer, IsArithmetic, IsFundamental, and AddConst type traits.
More can "easily" be added once the TypeList and macro magic is squinted
at for long enough :).
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Also add IndexSequence and associated helpers. The TypeList class can be
queried for what type is at a certain index, and there are two helper
functions: for_each_type, and for_each_type_zipped.
for_each_type will invoke a lambda with a TypeWrapper object for
each type in the type list. The original type can be obtained by
extracting the ::Type from the type of your generic lambda's one
argument.
for_each_type_zipped will walk two TypeLists in lockstep and pass a
TypeWrapper object for the current index in each list to a generic
lambda. The original type from the TypeList can again be extracted via
the ::Type of the generic lambda's two parameters.
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Also, make sure to using AK::IsNullPointer
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I ran into this exact but at least twenty times in Serenity alone. The
C++ Standard dictates that 'unsigned long' and 'unsigned long long' are
distinct types even though on most platforms they are usually both 64
bit integers.
Also it wasn't possible to evaluate IsIntegral<T> for types that were
not integers since it used MakeUnsigned<T> internally.
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It being an enum value was preventing it from being used without `!!` in
requires clauses (bool also makes more sense anyway).
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