mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-11-28 15:23:51 +00:00
256c124f94
This was done by:
This was done by applying:
```
diff --git a/python/mozbuild/mozbuild/code-analysis/mach_commands.py b/python/mozbuild/mozbuild/code-analysis/mach_commands.py
index 789affde7bbf..fe33c4c7d4d1 100644
--- a/python/mozbuild/mozbuild/code-analysis/mach_commands.py
+++ b/python/mozbuild/mozbuild/code-analysis/mach_commands.py
@@ -2007,7 +2007,7 @@ class StaticAnalysis(MachCommandBase):
from subprocess import Popen, PIPE, check_output, CalledProcessError
diff_process = Popen(self._get_clang_format_diff_command(commit), stdout=PIPE)
- args = [sys.executable, clang_format_diff, "-p1", "-binary=%s" % clang_format]
+ args = [sys.executable, clang_format_diff, "-p1", "-binary=%s" % clang_format, '-sort-includes']
if not output_file:
args.append("-i")
```
Then running `./mach clang-format -c <commit-hash>`
Then undoing that patch.
Then running check_spidermonkey_style.py --fixup
Then running `./mach clang-format`
I had to fix four things:
* I needed to move <utility> back down in GuardObjects.h because I was hitting
obscure problems with our system include wrappers like this:
0:03.94 /usr/include/stdlib.h:550:14: error: exception specification in declaration does not match previous declaration
0:03.94 extern void *realloc (void *__ptr, size_t __size)
0:03.94 ^
0:03.94 /home/emilio/src/moz/gecko-2/obj-debug/dist/include/malloc_decls.h:53:1: note: previous declaration is here
0:03.94 MALLOC_DECL(realloc, void*, void*, size_t)
0:03.94 ^
0:03.94 /home/emilio/src/moz/gecko-2/obj-debug/dist/include/mozilla/mozalloc.h:22:32: note: expanded from macro 'MALLOC_DECL'
0:03.94 MOZ_MEMORY_API return_type name##_impl(__VA_ARGS__);
0:03.94 ^
0:03.94 <scratch space>:178:1: note: expanded from here
0:03.94 realloc_impl
0:03.94 ^
0:03.94 /home/emilio/src/moz/gecko-2/obj-debug/dist/include/mozmemory_wrap.h:142:41: note: expanded from macro 'realloc_impl'
0:03.94 #define realloc_impl mozmem_malloc_impl(realloc)
Which I really didn't feel like digging into.
* I had to restore the order of TrustOverrideUtils.h and related files in nss
because the .inc files depend on TrustOverrideUtils.h being included earlier.
* I had to add a missing include to RollingNumber.h
* Also had to partially restore include order in JsepSessionImpl.cpp to avoid
some -WError issues due to some static inline functions being defined in a
header but not used in the rest of the compilation unit.
Differential Revision: https://phabricator.services.mozilla.com/D60327
--HG--
extra : moz-landing-system : lando
488 lines
17 KiB
C++
488 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* A variadic tuple class. */
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#ifndef mozilla_Tuple_h
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#define mozilla_Tuple_h
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#include <stddef.h>
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#include <utility>
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#include "mozilla/Pair.h"
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#include "mozilla/TemplateLib.h"
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#include "mozilla/TypeTraits.h"
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namespace mozilla {
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namespace detail {
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/*
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* A helper class that allows passing around multiple variadic argument lists
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* by grouping them.
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*/
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template <typename... Ts>
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struct Group;
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/*
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* CheckConvertibility checks whether each type in a source pack of types
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* is convertible to the corresponding type in a target pack of types.
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*
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* It is intended to be invoked like this:
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* CheckConvertibility<Group<SourceTypes...>, Group<TargetTypes...>>
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* 'Group' is used to separate types in the two packs (otherwise if we just
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* wrote 'CheckConvertibility<SourceTypes..., TargetTypes...', it couldn't
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* know where the first pack ends and the second begins).
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*
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* Note that we need to check explicitly that the two packs are of the same
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* size, because attempting to simultaneously expand two parameter packs
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* is an error (and it would be a hard error, because it wouldn't be in the
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* immediate context of the caller).
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*/
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template <typename Source, typename Target, bool SameSize>
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struct CheckConvertibilityImpl;
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template <typename Source, typename Target>
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struct CheckConvertibilityImpl<Source, Target, false> : FalseType {};
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template <typename... SourceTypes, typename... TargetTypes>
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struct CheckConvertibilityImpl<Group<SourceTypes...>, Group<TargetTypes...>,
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true>
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: IntegralConstant<
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bool,
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tl::And<IsConvertible<SourceTypes, TargetTypes>::value...>::value> {};
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template <typename Source, typename Target>
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struct CheckConvertibility;
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template <typename... SourceTypes, typename... TargetTypes>
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struct CheckConvertibility<Group<SourceTypes...>, Group<TargetTypes...>>
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: CheckConvertibilityImpl<Group<SourceTypes...>, Group<TargetTypes...>,
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sizeof...(SourceTypes) ==
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sizeof...(TargetTypes)> {};
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/*
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* TupleImpl is a helper class used to implement mozilla::Tuple.
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* It represents one node in a recursive inheritance hierarchy.
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* 'Index' is the 0-based index of the tuple element stored in this node;
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* 'Elements...' are the types of the elements stored in this node and its
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* base classes.
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*
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* Example:
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* Tuple<int, float, char> inherits from
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* TupleImpl<0, int, float, char>, which stores the 'int' and inherits from
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* TupleImpl<1, float, char>, which stores the 'float' and inherits from
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* TupleImpl<2, char>, which stores the 'char' and inherits from
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* TupleImpl<3>, which stores nothing and terminates the recursion.
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*
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* The purpose of the 'Index' parameter is to allow efficient index-based
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* access to a tuple element: given a tuple, and an index 'I' that we wish to
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* access, we can cast the tuple to the base which stores the I'th element
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* by performing template argument deduction against 'TupleImpl<I, E...>',
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* where 'I' is specified explicitly and 'E...' is deduced (this is what the
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* non-member 'Get<N>(t)' function does).
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*
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* This implementation strategy is borrowed from libstdc++'s std::tuple
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* implementation.
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*/
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template <std::size_t Index, typename... Elements>
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struct TupleImpl;
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/*
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* The base case of the inheritance recursion (and also the implementation
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* of an empty tuple).
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*/
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template <std::size_t Index>
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struct TupleImpl<Index> {
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bool operator==(const TupleImpl<Index>& aOther) const { return true; }
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template <typename F>
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void ForEach(const F& aFunc) {}
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};
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/*
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* One node of the recursive inheritance hierarchy. It stores the element at
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* index 'Index' of a tuple, of type 'HeadT', and inherits from the nodes
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* that store the remaining elements, of types 'TailT...'.
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*/
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template <std::size_t Index, typename HeadT, typename... TailT>
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struct TupleImpl<Index, HeadT, TailT...>
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: public TupleImpl<Index + 1, TailT...> {
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typedef TupleImpl<Index + 1, TailT...> Base;
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// Accessors for the head and the tail.
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// These are static, because the intended usage is for the caller to,
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// given a tuple, obtain the type B of the base class which stores the
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// element of interest, and then call B::Head(tuple) to access it.
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// (Tail() is mostly for internal use, but is exposed for consistency.)
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static HeadT& Head(TupleImpl& aTuple) { return aTuple.mHead; }
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static const HeadT& Head(const TupleImpl& aTuple) { return aTuple.mHead; }
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static Base& Tail(TupleImpl& aTuple) { return aTuple; }
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static const Base& Tail(const TupleImpl& aTuple) { return aTuple; }
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TupleImpl() : Base(), mHead() {}
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// Construct from const references to the elements.
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explicit TupleImpl(const HeadT& aHead, const TailT&... aTail)
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: Base(aTail...), mHead(aHead) {}
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// Construct from objects that are convertible to the elements.
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// This constructor is enabled only when the argument types are actually
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// convertible to the element types, otherwise it could become a better
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// match for certain invocations than the copy constructor.
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template <typename OtherHeadT, typename... OtherTailT,
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typename = typename EnableIf<
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CheckConvertibility<Group<OtherHeadT, OtherTailT...>,
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Group<HeadT, TailT...>>::value>::Type>
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explicit TupleImpl(OtherHeadT&& aHead, OtherTailT&&... aTail)
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: Base(std::forward<OtherTailT>(aTail)...),
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mHead(std::forward<OtherHeadT>(aHead)) {}
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// Copy and move constructors.
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// We'd like to use '= default' to implement these, but MSVC 2013's support
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// for '= default' is incomplete and this doesn't work.
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TupleImpl(const TupleImpl& aOther)
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: Base(Tail(aOther)), mHead(Head(aOther)) {}
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TupleImpl(TupleImpl&& aOther)
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: Base(std::move(Tail(aOther))),
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mHead(std::forward<HeadT>(Head(aOther))) {}
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// Assign from a tuple whose elements are convertible to the elements
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// of this tuple.
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template <typename... OtherElements,
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typename = typename EnableIf<sizeof...(OtherElements) ==
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sizeof...(TailT) + 1>::Type>
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TupleImpl& operator=(const TupleImpl<Index, OtherElements...>& aOther) {
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typedef TupleImpl<Index, OtherElements...> OtherT;
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Head(*this) = OtherT::Head(aOther);
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Tail(*this) = OtherT::Tail(aOther);
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return *this;
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}
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template <typename... OtherElements,
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typename = typename EnableIf<sizeof...(OtherElements) ==
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sizeof...(TailT) + 1>::Type>
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TupleImpl& operator=(TupleImpl<Index, OtherElements...>&& aOther) {
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typedef TupleImpl<Index, OtherElements...> OtherT;
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Head(*this) = std::move(OtherT::Head(aOther));
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Tail(*this) = std::move(OtherT::Tail(aOther));
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return *this;
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}
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// Copy and move assignment operators.
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TupleImpl& operator=(const TupleImpl& aOther) {
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Head(*this) = Head(aOther);
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Tail(*this) = Tail(aOther);
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return *this;
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}
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TupleImpl& operator=(TupleImpl&& aOther) {
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Head(*this) = std::move(Head(aOther));
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Tail(*this) = std::move(Tail(aOther));
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return *this;
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}
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bool operator==(const TupleImpl& aOther) const {
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return Head(*this) == Head(aOther) && Tail(*this) == Tail(aOther);
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}
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template <typename F>
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void ForEach(const F& aFunc) const& {
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aFunc(Head(*this));
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Tail(*this).ForEach(aFunc);
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}
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template <typename F>
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void ForEach(const F& aFunc) & {
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aFunc(Head(*this));
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Tail(*this).ForEach(aFunc);
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}
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template <typename F>
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void ForEach(const F& aFunc) && {
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aFunc(std::move(Head(*this)));
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std::move(Tail(*this)).ForEach(aFunc);
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}
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private:
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HeadT mHead; // The element stored at this index in the tuple.
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};
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} // namespace detail
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/**
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* Tuple is a class that stores zero or more objects, whose types are specified
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* as template parameters. It can be thought of as a generalization of Pair,
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* (which can be thought of as a 2-tuple).
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*
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* Tuple allows index-based access to its elements (with the index having to be
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* known at compile time) via the non-member function 'Get<N>(tuple)'.
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*/
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template <typename... Elements>
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class Tuple : public detail::TupleImpl<0, Elements...> {
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typedef detail::TupleImpl<0, Elements...> Impl;
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public:
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// The constructors and assignment operators here are simple wrappers
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// around those in TupleImpl.
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Tuple() : Impl() {}
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explicit Tuple(const Elements&... aElements) : Impl(aElements...) {}
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// Here, we can't just use 'typename... OtherElements' because MSVC will give
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// a warning "C4520: multiple default constructors specified" (even if no one
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// actually instantiates the constructor with an empty parameter pack -
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// that's probably a bug) and we compile with warnings-as-errors.
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template <typename OtherHead, typename... OtherTail,
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typename = typename EnableIf<detail::CheckConvertibility<
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detail::Group<OtherHead, OtherTail...>,
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detail::Group<Elements...>>::value>::Type>
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explicit Tuple(OtherHead&& aHead, OtherTail&&... aTail)
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: Impl(std::forward<OtherHead>(aHead),
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std::forward<OtherTail>(aTail)...) {}
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Tuple(const Tuple& aOther) : Impl(aOther) {}
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Tuple(Tuple&& aOther) : Impl(std::move(aOther)) {}
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template <typename... OtherElements,
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typename = typename EnableIf<sizeof...(OtherElements) ==
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sizeof...(Elements)>::Type>
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Tuple& operator=(const Tuple<OtherElements...>& aOther) {
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static_cast<Impl&>(*this) = aOther;
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return *this;
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}
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template <typename... OtherElements,
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typename = typename EnableIf<sizeof...(OtherElements) ==
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sizeof...(Elements)>::Type>
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Tuple& operator=(Tuple<OtherElements...>&& aOther) {
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static_cast<Impl&>(*this) = std::move(aOther);
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return *this;
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}
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Tuple& operator=(const Tuple& aOther) {
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static_cast<Impl&>(*this) = aOther;
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return *this;
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}
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Tuple& operator=(Tuple&& aOther) {
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static_cast<Impl&>(*this) = std::move(aOther);
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return *this;
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}
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bool operator==(const Tuple& aOther) const {
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return static_cast<const Impl&>(*this) == static_cast<const Impl&>(aOther);
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}
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};
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/**
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* Specialization of Tuple for two elements.
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* This is created to support construction and assignment from a Pair or
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* std::pair.
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*/
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template <typename A, typename B>
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class Tuple<A, B> : public detail::TupleImpl<0, A, B> {
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typedef detail::TupleImpl<0, A, B> Impl;
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public:
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// The constructors and assignment operators here are simple wrappers
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// around those in TupleImpl.
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Tuple() : Impl() {}
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explicit Tuple(const A& aA, const B& aB) : Impl(aA, aB) {}
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template <typename AArg, typename BArg,
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typename = typename EnableIf<detail::CheckConvertibility<
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detail::Group<AArg, BArg>, detail::Group<A, B>>::value>::Type>
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explicit Tuple(AArg&& aA, BArg&& aB)
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: Impl(std::forward<AArg>(aA), std::forward<BArg>(aB)) {}
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Tuple(const Tuple& aOther) : Impl(aOther) {}
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Tuple(Tuple&& aOther) : Impl(std::move(aOther)) {}
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explicit Tuple(const Pair<A, B>& aOther)
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: Impl(aOther.first(), aOther.second()) {}
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explicit Tuple(Pair<A, B>&& aOther)
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: Impl(std::forward<A>(aOther.first()),
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std::forward<B>(aOther.second())) {}
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explicit Tuple(const std::pair<A, B>& aOther)
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: Impl(aOther.first, aOther.second) {}
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explicit Tuple(std::pair<A, B>&& aOther)
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: Impl(std::forward<A>(aOther.first), std::forward<B>(aOther.second)) {}
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template <typename AArg, typename BArg>
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Tuple& operator=(const Tuple<AArg, BArg>& aOther) {
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static_cast<Impl&>(*this) = aOther;
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return *this;
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}
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template <typename AArg, typename BArg>
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Tuple& operator=(Tuple<AArg, BArg>&& aOther) {
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static_cast<Impl&>(*this) = std::move(aOther);
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return *this;
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}
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Tuple& operator=(const Tuple& aOther) {
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static_cast<Impl&>(*this) = aOther;
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return *this;
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}
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Tuple& operator=(Tuple&& aOther) {
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static_cast<Impl&>(*this) = std::move(aOther);
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return *this;
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}
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template <typename AArg, typename BArg>
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Tuple& operator=(const Pair<AArg, BArg>& aOther) {
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Impl::Head(*this) = aOther.first();
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Impl::Tail(*this).Head(*this) = aOther.second();
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return *this;
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}
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template <typename AArg, typename BArg>
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Tuple& operator=(Pair<AArg, BArg>&& aOther) {
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Impl::Head(*this) = std::forward<AArg>(aOther.first());
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Impl::Tail(*this).Head(*this) = std::forward<BArg>(aOther.second());
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return *this;
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}
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template <typename AArg, typename BArg>
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Tuple& operator=(const std::pair<AArg, BArg>& aOther) {
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Impl::Head(*this) = aOther.first;
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Impl::Tail(*this).Head(*this) = aOther.second;
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return *this;
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}
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template <typename AArg, typename BArg>
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Tuple& operator=(std::pair<AArg, BArg>&& aOther) {
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Impl::Head(*this) = std::forward<AArg>(aOther.first);
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Impl::Tail(*this).Head(*this) = std::forward<BArg>(aOther.second);
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return *this;
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}
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};
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/**
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* Specialization of Tuple for zero arguments.
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* This is necessary because if the primary template were instantiated with
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* an empty parameter pack, the 'Tuple(Elements...)' constructors would
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* become illegal overloads of the default constructor.
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*/
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template <>
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class Tuple<> {};
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namespace detail {
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/*
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* Helper functions for implementing Get<N>(tuple).
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* These functions take a TupleImpl<Index, Elements...>, with Index being
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* explicitly specified, and Elements being deduced. By passing a Tuple
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* object as argument, template argument deduction will do its magic and
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* cast the tuple to the base class which stores the element at Index.
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*/
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// Const reference version.
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template <std::size_t Index, typename... Elements>
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auto TupleGetHelper(TupleImpl<Index, Elements...>& aTuple)
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-> decltype(TupleImpl<Index, Elements...>::Head(aTuple)) {
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return TupleImpl<Index, Elements...>::Head(aTuple);
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}
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// Non-const reference version.
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template <std::size_t Index, typename... Elements>
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auto TupleGetHelper(const TupleImpl<Index, Elements...>& aTuple)
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-> decltype(TupleImpl<Index, Elements...>::Head(aTuple)) {
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return TupleImpl<Index, Elements...>::Head(aTuple);
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}
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} // namespace detail
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/**
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* Index-based access to an element of a tuple.
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* The syntax is Get<Index>(tuple). The index is zero-based.
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*
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* Example:
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*
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* Tuple<int, float, char> t;
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* ...
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* float f = Get<1>(t);
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*/
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// Non-const reference version.
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template <std::size_t Index, typename... Elements>
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auto Get(Tuple<Elements...>& aTuple)
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-> decltype(detail::TupleGetHelper<Index>(aTuple)) {
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return detail::TupleGetHelper<Index>(aTuple);
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}
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// Const reference version.
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template <std::size_t Index, typename... Elements>
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auto Get(const Tuple<Elements...>& aTuple)
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-> decltype(detail::TupleGetHelper<Index>(aTuple)) {
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return detail::TupleGetHelper<Index>(aTuple);
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}
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// Rvalue reference version.
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template <std::size_t Index, typename... Elements>
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auto Get(Tuple<Elements...>&& aTuple)
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-> decltype(std::move(mozilla::Get<Index>(aTuple))) {
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// We need a 'mozilla::' qualification here to avoid
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// name lookup only finding the current function.
|
|
return std::move(mozilla::Get<Index>(aTuple));
|
|
}
|
|
|
|
/**
|
|
* Helpers which call a function for each member of the tuple in turn. This will
|
|
* typically be used with a lambda function with an `auto&` argument:
|
|
*
|
|
* Tuple<Foo*, Bar*, SmartPtr<Baz>> tuple{a, b, c};
|
|
*
|
|
* ForEach(tuple, [](auto& aElem) {
|
|
* aElem = nullptr;
|
|
* });
|
|
*/
|
|
|
|
template <typename F>
|
|
inline void ForEach(const Tuple<>& aTuple, const F& aFunc) {}
|
|
|
|
template <typename F>
|
|
inline void ForEach(Tuple<>& aTuple, const F& aFunc) {}
|
|
|
|
template <typename F, typename... Elements>
|
|
void ForEach(const Tuple<Elements...>& aTuple, const F& aFunc) {
|
|
aTuple.ForEach(aTuple, aFunc);
|
|
}
|
|
|
|
template <typename F, typename... Elements>
|
|
void ForEach(Tuple<Elements...>& aTuple, const F& aFunc) {
|
|
aTuple.ForEach(aFunc);
|
|
}
|
|
|
|
template <typename F, typename... Elements>
|
|
void ForEach(Tuple<Elements...>&& aTuple, const F& aFunc) {
|
|
std::forward<Tuple<Elements...>>(aTuple).ForEach(aFunc);
|
|
}
|
|
|
|
/**
|
|
* A convenience function for constructing a tuple out of a sequence of
|
|
* values without specifying the type of the tuple.
|
|
* The type of the tuple is deduced from the types of its elements.
|
|
*
|
|
* Example:
|
|
*
|
|
* auto tuple = MakeTuple(42, 0.5f, 'c'); // has type Tuple<int, float, char>
|
|
*/
|
|
template <typename... Elements>
|
|
inline Tuple<typename Decay<Elements>::Type...> MakeTuple(
|
|
Elements&&... aElements) {
|
|
return Tuple<typename Decay<Elements>::Type...>(
|
|
std::forward<Elements>(aElements)...);
|
|
}
|
|
|
|
/**
|
|
* A convenience function for constructing a tuple of references to a
|
|
* sequence of variables. Since assignments to the elements of the tuple
|
|
* "go through" to the referenced variables, this can be used to "unpack"
|
|
* a tuple into individual variables.
|
|
*
|
|
* Example:
|
|
*
|
|
* int i;
|
|
* float f;
|
|
* char c;
|
|
* Tie(i, f, c) = FunctionThatReturnsATuple();
|
|
*/
|
|
template <typename... Elements>
|
|
inline Tuple<Elements&...> Tie(Elements&... aVariables) {
|
|
return Tuple<Elements&...>(aVariables...);
|
|
}
|
|
|
|
} // namespace mozilla
|
|
|
|
#endif /* mozilla_Tuple_h */
|