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AK: Assert that is<T>() input and output types are not the same

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This makes it a compile error to use is<T>() where the input and output
types are known to be the same at compile time.
This commit is contained in:
Tim Ledbetter 2024-08-08 14:21:13 +01:00 committed by Andreas Kling
parent 85863bb0ef
commit 82a63e350c
Notes: github-actions[bot] 2024-08-08 15:51:53 +00:00 
Author: https://github.com/tcl3
Commit: https://github.com/LadybirdBrowser/ladybird/commit/82a63e350cb
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/1010
Reviewed-by: https://github.com/awesomekling
1 changed files with 2 additions and 0 deletions
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2
AK/TypeCasts.h
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@ -7,6 +7,7 @@
#pragma once
#include <AK/Assertions.h>
#include <AK/Concepts.h>
#include <AK/Forward.h>
#include <AK/Platform.h>
@ -15,6 +16,7 @@ namespace AK {
template<typename OutputType, typename InputType>
ALWAYS_INLINE bool is(InputType& input)
{
static_assert(!SameAs<OutputType, InputType>);
if constexpr (requires { input.template fast_is<OutputType>(); }) {
return input.template fast_is<OutputType>();
}