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ladybird/AK/Noncopyable.h

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Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 05:38:21 -03:00
/*
Meta: Update my e-mail address everywhere
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* Copyright (c) 2018-2020, Andreas Kling <andreas@ladybird.org>
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
2020-01-18 05:38:21 -03:00
*
Everything: Move to SPDX license identifiers in all files. 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 *
2021-04-22 05:24:48 -03:00
* SPDX-License-Identifier: BSD-2-Clause
Meta: Add license header to source files As suggested by Joshua, this commit adds the 2-clause BSD license as a comment block to the top of every source file. For the first pass, I've just added myself for simplicity. I encourage everyone to add themselves as copyright holders of any file they've added or modified in some significant way. If I've added myself in error somewhere, feel free to replace it with the appropriate copyright holder instead. Going forward, all new source files should include a license header.
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*/
Import a simple text editor I started working on.
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#pragma once
#define AK_MAKE_NONCOPYABLE(c) \
Add clang-format file Also run it across the whole tree to get everything using the One True Style. We don't yet run this in an automated fashion as it's a little slow, but there is a snippet to do so in makeall.sh.
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private: \
Everywhere: Run clang-format
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c(c const&) = delete; \
c& operator=(c const&) = delete
AK: Add AK_MAKE_NONMOVABLE
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#define AK_MAKE_NONMOVABLE(c) \
Meta: Force semi-colon after MAKE_AK_NONXXXABLE() Before, we had about these occurrence counts: COPY: 13 without, 33 with MOVE: 12 without, 28 with Clearly, 'with' was the preferred way. However, this introduced double-semicolons all over the place, and caused some warnings to trigger. This patch *forces* the usage of a semi-colon when calling the macro, by removing the semi-colon within the macro. (And thus also gets rid of the double-semicolon.)
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private: \
c(c&&) = delete; \
c& operator=(c&&) = delete
AK: Introduce AK_MAKE_DEFAULT_MOVABLE macro for easier default impls
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#define AK_MAKE_DEFAULT_MOVABLE(c) \
public: \
c(c&&) = default; \
c& operator=(c&&) = default
AK: Add AK_MAKE_DEFAULT_COPYABLE
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#define AK_MAKE_DEFAULT_COPYABLE(c) \
public: \
c(c const&) = default; \
c& operator=(c const&) = default
AK: Move "conditional xtor" pattern into a macro `Optional` and `Variant` both use essentially the same pattern of only declaring a copy constructor/move constructor/destructor and copy/move assignment operator if all of their template parameters have one. Let's move these into a macro to avoid code duplication and to give a name to the thing we are trying to accomplish.
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AK: Loosen the restrictions on non-copyable/non-movable containers If a type is non-move constructible but move assignable, its container type may still be move assignable. Similairly, if a type is non-copy constructible but copy assignable, its container type may still be copy assignable.
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#define AK_MAKE_CONDITIONALLY_NONMOVABLE(c, ...) \
public: \
c(c&&) \
requires(!(AK::Detail::IsMoveConstructible __VA_ARGS__)) \
= delete; \
c& operator=(c&&) \
requires(!((AK::Detail::IsMoveConstructible __VA_ARGS__) || (AK::Detail::IsMoveAssignable __VA_ARGS__)) \
|| !(AK::Detail::IsDestructible __VA_ARGS__)) \
AK: Move "conditional xtor" pattern into a macro `Optional` and `Variant` both use essentially the same pattern of only declaring a copy constructor/move constructor/destructor and copy/move assignment operator if all of their template parameters have one. Let's move these into a macro to avoid code duplication and to give a name to the thing we are trying to accomplish.
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= delete
#define AK_MAKE_CONDITIONALLY_MOVABLE(c, T) \
AK_MAKE_CONDITIONALLY_NONMOVABLE(c, T); \
c(c&&) = default; \
c& operator=(c&&) = default
AK: Loosen the restrictions on non-copyable/non-movable containers If a type is non-move constructible but move assignable, its container type may still be move assignable. Similairly, if a type is non-copy constructible but copy assignable, its container type may still be copy assignable.
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#define AK_MAKE_CONDITIONALLY_NONCOPYABLE(c, ...) \
public: \
c(c const&) \
requires(!(AK::Detail::IsCopyConstructible __VA_ARGS__)) \
= delete; \
c& operator=(c const&) \
requires(!((AK::Detail::IsCopyConstructible __VA_ARGS__) || (AK::Detail::IsCopyAssignable __VA_ARGS__)) \
|| !(AK::Detail::IsDestructible __VA_ARGS__)) \
AK: Move "conditional xtor" pattern into a macro `Optional` and `Variant` both use essentially the same pattern of only declaring a copy constructor/move constructor/destructor and copy/move assignment operator if all of their template parameters have one. Let's move these into a macro to avoid code duplication and to give a name to the thing we are trying to accomplish.
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= delete
#define AK_MAKE_CONDITIONALLY_COPYABLE(c, ...) \
AK_MAKE_CONDITIONALLY_NONCOPYABLE(c, __VA_ARGS__); \
c(c const&) = default; \
c& operator=(c const&) = default
#define AK_MAKE_CONDITIONALLY_NONDESTRUCTIBLE(c, ...) \
public: \
~c() \
requires(!(AK::Detail::IsDestructible __VA_ARGS__)) \
= delete
#define AK_MAKE_CONDITIONALLY_DESTRUCTIBLE(c, ...) \
public: \
~c() \
requires(!(AK::Detail::IsDestructible __VA_ARGS__)) \
= delete; \
~c() = default
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