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Differential D103583

[libcxx][gardening] Move all algorithms into their own headers.
ClosedPublic

Authored by ldionne on Jun 2 2021, 6:18 PM.

Details

Reviewers
cjdb
• Quuxplusone
EricWF
jdoerfert
zoecarver
phosek
Group Reviewers
Restricted Project
Commits
rG134723edd5bf: [libcxx] Move all algorithms into their own headers
rG7ed7d4ccb899: [libcxx][gardening] Move all algorithms into their own headers.
Summary

This is a fairly mechanical change, it just moves each algorithm into its own header. This is a NFC.

Note: during this change, I burned down all the includes, so this follows "include only and exactly what you use."

There may be some module work that needs to happen here. Let's see what the CI thinks.

Diff Detail

Event Timeline

zoecarver created this revision.Jun 2 2021, 6:18 PM
Herald added subscribers: wenlei, mgrang, mgorny. · View Herald TranscriptJun 2 2021, 6:18 PM
zoecarver requested review of this revision.Jun 2 2021, 6:18 PM
Herald added a reviewer: jdoerfert. · View Herald TranscriptJun 2 2021, 6:18 PM
Herald added a project: Restricted Project. · View Herald Transcript
Herald added a reviewer: Restricted Project. · View Herald Transcript
Herald added subscribers: libcxx-commits, sstefan1. · View Herald Transcript
zoecarver added a comment.Jun 2 2021, 6:22 PM

Note: this change includes D103330. I just subsumed that patch because I need to use some things form it and update it a bit. I think it's easiest to just take this one rather than trying to deal with merge conflicts and updates to that one.

zoecarver updated this revision to Diff 349440.Jun 2 2021, 6:22 PM

Remove two unrelated files.

cjdb added inline comments.Jun 2 2021, 8:25 PM
libcxx/include/module.modulemap
220–223

You'll need to replicate what I do in D103551 for every algorithm header.

409–410
451–454

Delete.

554–557

Delete.

• Quuxplusone added a comment.Jun 2 2021, 8:49 PM

Not a blocker, but just for curiosity's sake, could you run graph_header_deps.py before and after this patch and upload the images somewhere?
libcxx/utils/graph_header_deps.py | dot -Tpng > coolgraph.png
We expect the graph to get vastly more dotty-and-liney, but maybe less bottlenecky? It'd be interesting to look at, anyway.

Harbormaster completed remote builds in B107371: Diff 349440.Jun 2 2021, 11:24 PM
ldionne accepted this revision.Jun 3 2021, 7:30 AM

This LGTM, however I want to understand the recent Modules failures better before checking this in, to make sure we don't have to revert it. It has the potential to be fairly disruptive (in terms of downstream merge conflicts for people with forks and stuff like that). I just want to make sure that we get it right the first time around, so please hold on with committing until we've made sure of that.

This revision is now accepted and ready to land.Jun 3 2021, 7:30 AM
cjdb added a parent revision: D103551: [libcxx][module-map] creates submodules for private headers.Jun 3 2021, 8:56 AM
cjdb requested changes to this revision.Jun 3 2021, 10:19 AM

Note: during this change, I burned down all the includes, so this follows "include only and exactly what you use."

In D103330 @ldionne asked that this be done in a separate patch.

This revision now requires changes to proceed.Jun 3 2021, 10:19 AM
• Quuxplusone added inline comments.Jun 3 2021, 10:41 AM
libcxx/include/algorithm
648–665

(A) Why are these few headers alphabetized and then the bulk of them (below) done... below?

(B) @cjdb wrote:

Note: during this change, I burned down all the includes, so this follows "include only and exactly what you use."

In D103330 @ldionne asked that this be done in a separate patch.

The important thing @ldionne was getting at in D103330 is Hyrum's Law. We need to make sure that we don't break any of libc++'s customers who might be relying on the fact e.g. "by including <algorithm>, I also receive all of <functional>." @zoecarver's change doesn't actually affect those customers AFAICT, because he's leaving the existing includes alone here (e.g. <algorithm> does still include <functional>).

However, @zoecarver, please do triple-check this PR to make sure that the top-level <algorithm> header still includes all the facilities it used to, and that the same is true for all other top-level publicly visible headers (e.g. <functional>, <iterator>, anything else that might have changed).

zoecarver updated this revision to Diff 349609.Jun 3 2021, 10:55 AM
  • Modularize
Harbormaster completed remote builds in B107496: Diff 349609.Jun 3 2021, 10:56 AM
zoecarver added inline comments.Jun 3 2021, 10:58 AM
libcxx/include/algorithm
648–665

(A) Why are these few headers alphabetized and then the bulk of them (below) done... below?

Arg. Sorry this came out of merging Chris' patch with mine. Will fix. (Come to think of it, I also need to update the cmake list.)

The important thing @ldionne was getting at in D103330 is Hyrum's Law. We need to make sure that we don't break any of libc++'s customers who might be relying on the fact e.g. "by including <algorithm>, I also receive all of <functional>." @zoecarver's change doesn't actually affect those customers AFAICT, because he's leaving the existing includes alone here (e.g. <algorithm> does still include <functional>).

However, @zoecarver, please do triple-check this PR to make sure that the top-level <algorithm> header still includes all the facilities it used to, and that the same is true for all other top-level publicly visible headers (e.g. <functional>, <iterator>, anything else that might have changed).

Yes. I haven't removed anything from <algorithm>.

zoecarver updated this revision to Diff 349613.Jun 3 2021, 11:13 AM
  • Re-alphabatize and add a few missing modules to the module map
  • __search.h -> search.h
Harbormaster completed remote builds in B107498: Diff 349613.Jun 3 2021, 11:14 AM
zoecarver updated this revision to Diff 349614.Jun 3 2021, 11:14 AM
  • Remove two unrealted files
Harbormaster completed remote builds in B107499: Diff 349614.Jun 3 2021, 11:14 AM
cjdb accepted this revision.Jun 3 2021, 11:23 AM

LGTM pending my requested deletions.

libcxx/include/module.modulemap
292–294

Delete

This revision is now accepted and ready to land.Jun 3 2021, 11:23 AM
zoecarver updated this revision to Diff 349622.Jun 3 2021, 11:30 AM

Rebase.

Harbormaster completed remote builds in B107503: Diff 349622.Jun 3 2021, 11:37 AM
zoecarver updated this revision to Diff 349628.Jun 3 2021, 11:49 AM

Add back half_positive.h which got removed on accident (and I didn't catch it because cmake cached it in the build directoyr).

Harbormaster completed remote builds in B107507: Diff 349628.Jun 3 2021, 12:08 PM
zoecarver updated this revision to Diff 349662.Jun 3 2021, 12:54 PM

Fix another include issue that I didn't catch thanks to ninja caching.

• Quuxplusone added a comment.Jun 3 2021, 1:57 PM

Double-check your module.modulemap changes: I still see at least one export * in there.
Also some removed blank lines that may or may not have been on purpose. Just make sure the style we end up with is consistent across all the sections of module.modulemap.
Otherwise, sure, LGTM (modulo my usual curmudgeoning that all these little headers are gonna be icky).

Also: I assume it's intentional that you went with half_positive.h instead of __half_positive.h, and so on? (I.e., some of these files define standard algorithms and some define helpers, with no clear naming distinction between the two kinds.)

cjdb added a comment.Jun 3 2021, 2:37 PM
In D103583#2797366, @Quuxplusone wrote:

Also: I assume it's intentional that you went with half_positive.h instead of __half_positive.h, and so on? (I.e., some of these files define standard algorithms and some define helpers, with no clear naming distinction between the two kinds.)

Agreed that we should probably get a convention going. We can do that offline, but I've been following whatever is the salient feature of the file. If it's __half_positive, then I'd make the header __half_positive.h.

libcxx/include/module.modulemap
295

This export * still needs to go.

Harbormaster completed remote builds in B107539: Diff 349662.Jun 3 2021, 3:33 PM
Closed by commit rG7ed7d4ccb899: [libcxx][gardening] Move all algorithms into their own headers. (authored by zoecarver). · Explain WhyJun 4 2021, 9:37 AM
This revision was automatically updated to reflect the committed changes.
zoecarver added a commit: rG7ed7d4ccb899: [libcxx][gardening] Move all algorithms into their own headers..
phosek added a reverting change: rG692d7166f771: Revert "[libcxx][gardening] Move all algorithms into their own headers.".Jun 7 2021, 5:16 PM
ldionne reopened this revision.Jun 17 2021, 8:49 AM
This revision is now accepted and ready to land.Jun 17 2021, 8:49 AM
ldionne commandeered this revision.Jun 17 2021, 9:15 AM
ldionne edited reviewers, added: zoecarver; removed: ldionne.

Commandeering as I'm getting ready to re-apply this change (well, really D104171 which is a mix of D103330, this and additional work).

ldionne updated this revision to Diff 352752.Jun 17 2021, 9:16 AM

Update to https://reviews.llvm.org/D104171.

ldionne added a reviewer: phosek.Jun 17 2021, 9:18 AM
ldionne added a subscriber: phosek.

@phosek Could you please apply this change locally and run whatever you ran that caused you to revert last week? I think we should have fixed our stuff, but I really want to make sure we're not going to break you again, because it's extremely painful for us to revert and re-apply such a large change (and it messes up the history pretty badly, too).

This revision now requires review to proceed.Jun 17 2021, 9:18 AM
Harbormaster completed remote builds in B109737: Diff 352752.Jun 17 2021, 7:21 PM
phosek accepted this revision.Jun 18 2021, 7:16 PM

LGTM

This revision is now accepted and ready to land.Jun 18 2021, 7:16 PM
Closed by commit rG134723edd5bf: [libcxx] Move all algorithms into their own headers (authored by ldionne). · Explain WhyJun 19 2021, 4:49 AM
This revision was automatically updated to reflect the committed changes.
ldionne added a commit: rG134723edd5bf: [libcxx] Move all algorithms into their own headers.

Revision Contents

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__functional/
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__memory/
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__random/
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experimental/
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test/
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algorithms/
alg.modifying.operations/
alg.random.sample/
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alg.sorting/
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containers/
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Diff 353188

libcxx/include/CMakeLists.txt

set(files set(files
__algorithm/adjacent_find.h
__algorithm/all_of.h
__algorithm/any_of.h
__algorithm/binary_search.h
__algorithm/clamp.h
__algorithm/comp.h
__algorithm/comp_ref_type.h
__algorithm/copy_backward.h
__algorithm/copy.h
__algorithm/copy_if.h
__algorithm/copy_n.h
__algorithm/count.h
__algorithm/count_if.h
__algorithm/equal.h
__algorithm/equal_range.h
__algorithm/fill_n.h
__algorithm/fill.h
__algorithm/find.h
__algorithm/find_end.h
__algorithm/find_first_of.h
__algorithm/find_if.h
__algorithm/find_if_not.h
__algorithm/for_each.h
__algorithm/for_each_n.h
__algorithm/generate_n.h
__algorithm/generate.h
__algorithm/half_positive.h
__algorithm/includes.h
__algorithm/inplace_merge.h
__algorithm/is_heap.h
__algorithm/is_heap_until.h
__algorithm/is_partitioned.h
__algorithm/is_permutation.h
__algorithm/is_sorted.h
__algorithm/is_sorted_until.h
__algorithm/lexicographical_compare.h
__algorithm/lower_bound.h
__algorithm/make_heap.h
__algorithm/max.h
__algorithm/max_element.h
__algorithm/merge.h
__algorithm/min.h
__algorithm/min_element.h
__algorithm/minmax.h
__algorithm/minmax_element.h
__algorithm/mismatch.h
__algorithm/move_backward.h
__algorithm/move.h
__algorithm/next_permutation.h
__algorithm/none_of.h
__algorithm/nth_element.h
__algorithm/partial_sort.h
__algorithm/partial_sort_copy.h
__algorithm/partition.h
__algorithm/partition_copy.h
__algorithm/partition_point.h
__algorithm/pop_heap.h
__algorithm/prev_permutation.h
__algorithm/push_heap.h
__algorithm/remove.h
__algorithm/remove_copy.h
__algorithm/remove_copy_if.h
__algorithm/remove_if.h
__algorithm/replace.h
__algorithm/replace_copy.h
__algorithm/replace_copy_if.h
__algorithm/replace_if.h
__algorithm/reverse.h
__algorithm/reverse_copy.h
__algorithm/rotate.h
__algorithm/rotate_copy.h
__algorithm/sample.h
__algorithm/search.h
__algorithm/search_n.h
__algorithm/set_difference.h
__algorithm/set_intersection.h
__algorithm/set_symmetric_difference.h
__algorithm/set_union.h
__algorithm/shift_left.h
__algorithm/shift_right.h
__algorithm/shuffle.h
__algorithm/sift_down.h
__algorithm/sort.h
__algorithm/sort_heap.h
__algorithm/stable_partition.h
__algorithm/stable_sort.h
__algorithm/transform.h
__algorithm/unique_copy.h
__algorithm/unique.h
__algorithm/unwrap_iter.h
__algorithm/upper_bound.h
__availability __availability
__bit_reference __bit_reference
__bits __bits
__bsd_locale_defaults.h __bsd_locale_defaults.h
__bsd_locale_fallbacks.h __bsd_locale_fallbacks.h
__config __config
__debug __debug
__errc __errc
__format/format_error.h __format/format_error.h
__format/format_parse_context.h __format/format_parse_context.h
__function_like.h __function_like.h
__functional/search.h
__functional_03 __functional_03
__functional_base __functional_base
__functional_base_03 __functional_base_03
__hash_table __hash_table
__iterator/advance.h __iterator/advance.h
__iterator/concepts.h __iterator/concepts.h
__iterator/default_sentinel.h __iterator/default_sentinel.h
__iterator/incrementable_traits.h __iterator/incrementable_traits.h
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__memory/raw_storage_iterator.h __memory/raw_storage_iterator.h
__memory/shared_ptr.h __memory/shared_ptr.h
__memory/temporary_buffer.h __memory/temporary_buffer.h
__memory/uninitialized_algorithms.h __memory/uninitialized_algorithms.h
__memory/unique_ptr.h __memory/unique_ptr.h
__mutex_base __mutex_base
__node_handle __node_handle
__nullptr __nullptr
__random/uniform_int_distribution.h
__ranges/access.h __ranges/access.h
__ranges/all.h __ranges/all.h
__ranges/concepts.h __ranges/concepts.h
__ranges/data.h __ranges/data.h
__ranges/empty.h __ranges/empty.h
__ranges/empty_view.h __ranges/empty_view.h
__ranges/enable_borrowed_range.h __ranges/enable_borrowed_range.h
__ranges/enable_view.h __ranges/enable_view.h
▲ Show 20 Lines • Show All 229 Lines • Show Last 20 Lines

libcxx/include/__algorithm/adjacent_find.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_ADJACENT_FIND_H
#define _LIBCPP___ALGORITHM_ADJACENT_FIND_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
adjacent_find(_ForwardIterator __first, _ForwardIterator __last, _BinaryPredicate __pred) {
if (__first != __last) {
_ForwardIterator __i = __first;
while (++__i != __last) {
if (__pred(*__first, *__i))
return __first;
__first = __i;
}
}
return __last;
}
template <class _ForwardIterator>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator
adjacent_find(_ForwardIterator __first, _ForwardIterator __last) {
typedef typename iterator_traits<_ForwardIterator>::value_type __v;
return _VSTD::adjacent_find(__first, __last, __equal_to<__v>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_ADJACENT_FIND_H

libcxx/include/__algorithm/all_of.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_ALL_OF_H
#define _LIBCPP___ALGORITHM_ALL_OF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
all_of(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (!__pred(*__first))
return false;
return true;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_ALL_OF_H

libcxx/include/__algorithm/any_of.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_ANY_OF_H
#define _LIBCPP___ALGORITHM_ANY_OF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
any_of(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (__pred(*__first))
return true;
return false;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_ANY_OF_H

libcxx/include/__algorithm/binary_search.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_BINARY_SEARCH_H
#define _LIBCPP___ALGORITHM_BINARY_SEARCH_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/lower_bound.h>
#include <__algorithm/comp_ref_type.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
__binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
__first = _VSTD::__lower_bound<_Compare>(__first, __last, __value_, __comp);
return __first != __last && !__comp(__value_, *__first);
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__binary_search<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::binary_search(__first, __last, __value_,
__less<typename iterator_traits<_ForwardIterator>::value_type, _Tp>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_BINARY_SEARCH_H

libcxx/include/__algorithm/clamp.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_CLAMP_H
#define _LIBCPP___ALGORITHM_CLAMP_H
#include <__config>
#include <__debug>
#include <__algorithm/comp.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 14
// clamp
template<class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
const _Tp&
clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi, _Compare __comp)
{
_LIBCPP_ASSERT(!__comp(__hi, __lo), "Bad bounds passed to std::clamp");
return __comp(__v, __lo) ? __lo : __comp(__hi, __v) ? __hi : __v;
}
template<class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
const _Tp&
clamp(const _Tp& __v, const _Tp& __lo, const _Tp& __hi)
{
return _VSTD::clamp(__v, __lo, __hi, __less<_Tp>());
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_CLAMP_H

libcxx/include/__algorithm/comp.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_COMP_H
#define _LIBCPP___ALGORITHM_COMP_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// I'd like to replace these with _VSTD::equal_to<void>, but can't because:
// * That only works with C++14 and later, and
// * We haven't included <functional> here.
template <class _T1, class _T2 = _T1>
struct __equal_to
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T1& __x, const _T2& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T2& __x, const _T1& __y) const {return __x == __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 bool operator()(const _T2& __x, const _T2& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<_T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<const _T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1>
struct __equal_to<_T1, const _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x == __y;}
};
template <class _T1, class _T2 = _T1>
struct __less
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T2& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T2& __x, const _T1& __y) const {return __x < __y;}
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T2& __x, const _T2& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<_T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<const _T1, _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
template <class _T1>
struct __less<_T1, const _T1>
{
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11
bool operator()(const _T1& __x, const _T1& __y) const {return __x < __y;}
};
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COMP_H

libcxx/include/__algorithm/comp_ref_type.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_COMP_REF_TYPE_H
#define _LIBCPP___ALGORITHM_COMP_REF_TYPE_H
#include <__config>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#ifdef _LIBCPP_DEBUG
template <class _Compare>
struct __debug_less
{
_Compare &__comp_;
_LIBCPP_CONSTEXPR_AFTER_CXX17
__debug_less(_Compare& __c) : __comp_(__c) {}
template <class _Tp, class _Up>
_LIBCPP_CONSTEXPR_AFTER_CXX17
bool operator()(const _Tp& __x, const _Up& __y)
{
bool __r = __comp_(__x, __y);
if (__r)
__do_compare_assert(0, __y, __x);
return __r;
}
template <class _Tp, class _Up>
_LIBCPP_CONSTEXPR_AFTER_CXX17
bool operator()(_Tp& __x, _Up& __y)
{
bool __r = __comp_(__x, __y);
if (__r)
__do_compare_assert(0, __y, __x);
return __r;
}
template <class _LHS, class _RHS>
_LIBCPP_CONSTEXPR_AFTER_CXX17
inline _LIBCPP_INLINE_VISIBILITY
decltype((void)declval<_Compare&>()(
declval<_LHS &>(), declval<_RHS &>()))
__do_compare_assert(int, _LHS & __l, _RHS & __r) {
_LIBCPP_ASSERT(!__comp_(__l, __r),
"Comparator does not induce a strict weak ordering");
}
template <class _LHS, class _RHS>
_LIBCPP_CONSTEXPR_AFTER_CXX17
inline _LIBCPP_INLINE_VISIBILITY
void __do_compare_assert(long, _LHS &, _RHS &) {}
};
#endif // _LIBCPP_DEBUG
template <class _Comp>
struct __comp_ref_type {
// Pass the comparator by lvalue reference. Or in debug mode, using a
// debugging wrapper that stores a reference.
#ifndef _LIBCPP_DEBUG
typedef typename add_lvalue_reference<_Comp>::type type;
#else
typedef __debug_less<_Comp> type;
#endif
};
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COMP_REF_TYPE_H

libcxx/include/__algorithm/copy.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_COPY_H
#define _LIBCPP___ALGORITHM_COPY_H
#include <__config>
#include <__algorithm/unwrap_iter.h>
#include <__iterator/iterator_traits.h>
#include <cstring>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// copy
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__copy_constexpr(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
for (; __first != __last; ++__first, (void) ++__result)
*__result = *__first;
return __result;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY
_OutputIterator
__copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
return _VSTD::__copy_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_copy_assignable<_Up>::value,
_Up*
>::type
__copy(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
return __result + __n;
}
template <class _InputIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
copy(_InputIterator __first, _InputIterator __last, _OutputIterator __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__copy_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__copy(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COPY_H

libcxx/include/__algorithm/copy_backward.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_COPY_BACKWARD_H
#define _LIBCPP___ALGORITHM_COPY_BACKWARD_H
#include <__config>
#include <__algorithm/unwrap_iter.h>
#include <__iterator/iterator_traits.h>
#include <cstring>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BidirectionalIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__copy_backward_constexpr(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
{
while (__first != __last)
*--__result = *--__last;
return __result;
}
template <class _BidirectionalIterator, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY
_OutputIterator
__copy_backward(_BidirectionalIterator __first, _BidirectionalIterator __last, _OutputIterator __result)
{
return _VSTD::__copy_backward_constexpr(__first, __last, __result);
}
template <class _Tp, class _Up>
inline _LIBCPP_INLINE_VISIBILITY
typename enable_if
<
is_same<typename remove_const<_Tp>::type, _Up>::value &&
is_trivially_copy_assignable<_Up>::value,
_Up*
>::type
__copy_backward(_Tp* __first, _Tp* __last, _Up* __result)
{
const size_t __n = static_cast<size_t>(__last - __first);
if (__n > 0)
{
__result -= __n;
_VSTD::memmove(__result, __first, __n * sizeof(_Up));
}
return __result;
}
template <class _BidirectionalIterator1, class _BidirectionalIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_BidirectionalIterator2
copy_backward(_BidirectionalIterator1 __first, _BidirectionalIterator1 __last,
_BidirectionalIterator2 __result)
{
if (__libcpp_is_constant_evaluated()) {
return _VSTD::__copy_backward_constexpr(__first, __last, __result);
} else {
return _VSTD::__rewrap_iter(__result,
_VSTD::__copy_backward(_VSTD::__unwrap_iter(__first),
_VSTD::__unwrap_iter(__last),
_VSTD::__unwrap_iter(__result)));
}
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COPY_BACKWARD_H

libcxx/include/__algorithm/copy_if.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_COPY_IF_H
#define _LIBCPP___ALGORITHM_COPY_IF_H
#include <__config>
#include <__algorithm/unwrap_iter.h>
#include <__iterator/iterator_traits.h>
#include <cstring>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template<class _InputIterator, class _OutputIterator, class _Predicate>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
copy_if(_InputIterator __first, _InputIterator __last,
_OutputIterator __result, _Predicate __pred)
{
for (; __first != __last; ++__first)
{
if (__pred(*__first))
{
*__result = *__first;
++__result;
}
}
return __result;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COPY_IF_H

libcxx/include/__algorithm/copy_n.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_COPY_N_H
#define _LIBCPP___ALGORITHM_COPY_N_H
#include <__config>
#include <__algorithm/copy.h>
#include <__algorithm/unwrap_iter.h>
#include <__iterator/iterator_traits.h>
#include <cstring>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template<class _InputIterator, class _Size, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename enable_if
<
__is_cpp17_input_iterator<_InputIterator>::value &&
!__is_cpp17_random_access_iterator<_InputIterator>::value,
_OutputIterator
>::type
copy_n(_InputIterator __first, _Size __orig_n, _OutputIterator __result)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
if (__n > 0)
{
*__result = *__first;
++__result;
for (--__n; __n > 0; --__n)
{
++__first;
*__result = *__first;
++__result;
}
}
return __result;
}
template<class _InputIterator, class _Size, class _OutputIterator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename enable_if
<
__is_cpp17_random_access_iterator<_InputIterator>::value,
_OutputIterator
>::type
copy_n(_InputIterator __first, _Size __orig_n, _OutputIterator __result)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
return _VSTD::copy(__first, __first + __n, __result);
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COPY_N_H

libcxx/include/__algorithm/count.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_COUNT_H
#define _LIBCPP___ALGORITHM_COUNT_H
#include <__config>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename iterator_traits<_InputIterator>::difference_type
count(_InputIterator __first, _InputIterator __last, const _Tp& __value_) {
typename iterator_traits<_InputIterator>::difference_type __r(0);
for (; __first != __last; ++__first)
if (*__first == __value_)
++__r;
return __r;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COUNT_H

libcxx/include/__algorithm/count_if.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_COUNT_IF_H
#define _LIBCPP___ALGORITHM_COUNT_IF_H
#include <__config>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
typename iterator_traits<_InputIterator>::difference_type
count_if(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
typename iterator_traits<_InputIterator>::difference_type __r(0);
for (; __first != __last; ++__first)
if (__pred(*__first))
++__r;
return __r;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_COUNT_IF_H

libcxx/include/__algorithm/equal.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_EQUAL_H
#define _LIBCPP___ALGORITHM_EQUAL_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#include <iterator> // FIXME: replace with <__iterator/distance.h> when it lands
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) {
for (; __first1 != __last1; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
return false;
return true;
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) {
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::equal(__first1, __last1, __first2, __equal_to<__v1, __v2>());
}
#if _LIBCPP_STD_VER > 11
template <class _BinaryPredicate, class _InputIterator1, class _InputIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_BinaryPredicate __pred, input_iterator_tag, input_iterator_tag) {
for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
return false;
return __first1 == __last1 && __first2 == __last2;
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__equal(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
_RandomAccessIterator2 __last2, _BinaryPredicate __pred, random_access_iterator_tag,
random_access_iterator_tag) {
if (_VSTD::distance(__first1, __last1) != _VSTD::distance(__first2, __last2))
return false;
return _VSTD::equal<_RandomAccessIterator1, _RandomAccessIterator2,
typename add_lvalue_reference<_BinaryPredicate>::type>(__first1, __last1, __first2, __pred);
}
template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_BinaryPredicate __pred) {
return _VSTD::__equal<typename add_lvalue_reference<_BinaryPredicate>::type>(
__first1, __last1, __first2, __last2, __pred, typename iterator_traits<_InputIterator1>::iterator_category(),
typename iterator_traits<_InputIterator2>::iterator_category());
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) {
typedef typename iterator_traits<_InputIterator1>::value_type __v1;
typedef typename iterator_traits<_InputIterator2>::value_type __v2;
return _VSTD::__equal(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>(),
typename iterator_traits<_InputIterator1>::iterator_category(),
typename iterator_traits<_InputIterator2>::iterator_category());
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_EQUAL_H

libcxx/include/__algorithm/equal_range.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_EQUAL_RANGE_H
#define _LIBCPP___ALGORITHM_EQUAL_RANGE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/half_positive.h>
#include <__algorithm/lower_bound.h>
#include <__algorithm/upper_bound.h>
#include <iterator>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _ForwardIterator, class _Tp>
_LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_ForwardIterator, _ForwardIterator>
__equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename iterator_traits<_ForwardIterator>::difference_type difference_type;
difference_type __len = _VSTD::distance(__first, __last);
while (__len != 0)
{
difference_type __l2 = _VSTD::__half_positive(__len);
_ForwardIterator __m = __first;
_VSTD::advance(__m, __l2);
if (__comp(*__m, __value_))
{
__first = ++__m;
__len -= __l2 + 1;
}
else if (__comp(__value_, *__m))
{
__last = __m;
__len = __l2;
}
else
{
_ForwardIterator __mp1 = __m;
return pair<_ForwardIterator, _ForwardIterator>
(
_VSTD::__lower_bound<_Compare>(__first, __m, __value_, __comp),
_VSTD::__upper_bound<_Compare>(++__mp1, __last, __value_, __comp)
);
}
}
return pair<_ForwardIterator, _ForwardIterator>(__first, __first);
}
template <class _ForwardIterator, class _Tp, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_ForwardIterator, _ForwardIterator>
equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, _Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__equal_range<_Comp_ref>(__first, __last, __value_, __comp);
}
template <class _ForwardIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
pair<_ForwardIterator, _ForwardIterator>
equal_range(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
return _VSTD::equal_range(__first, __last, __value_,
__less<typename iterator_traits<_ForwardIterator>::value_type, _Tp>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_EQUAL_RANGE_H

libcxx/include/__algorithm/fill.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FILL_H
#define _LIBCPP___ALGORITHM_FILL_H
#include <__config>
#include <__algorithm/fill_n.h>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_, forward_iterator_tag)
{
for (; __first != __last; ++__first)
*__first = __value_;
}
template <class _RandomAccessIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
__fill(_RandomAccessIterator __first, _RandomAccessIterator __last, const _Tp& __value_, random_access_iterator_tag)
{
_VSTD::fill_n(__first, __last - __first, __value_);
}
template <class _ForwardIterator, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
fill(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value_)
{
_VSTD::__fill(__first, __last, __value_, typename iterator_traits<_ForwardIterator>::iterator_category());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FILL_H

libcxx/include/__algorithm/fill_n.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FILL_N_H
#define _LIBCPP___ALGORITHM_FILL_N_H
#include <__config>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _OutputIterator, class _Size, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
__fill_n(_OutputIterator __first, _Size __n, const _Tp& __value_)
{
for (; __n > 0; ++__first, (void) --__n)
*__first = __value_;
return __first;
}
template <class _OutputIterator, class _Size, class _Tp>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
fill_n(_OutputIterator __first, _Size __n, const _Tp& __value_)
{
return _VSTD::__fill_n(__first, _VSTD::__convert_to_integral(__n), __value_);
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FILL_N_H

libcxx/include/__algorithm/find.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FIND_H
#define _LIBCPP___ALGORITHM_FIND_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Tp>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _InputIterator
find(_InputIterator __first, _InputIterator __last, const _Tp& __value_) {
for (; __first != __last; ++__first)
if (*__first == __value_)
break;
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_H

libcxx/include/__algorithm/find_end.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FIND_END_OF_H
#define _LIBCPP___ALGORITHM_FIND_END_OF_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _BinaryPredicate, class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1 __find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1,
_ForwardIterator2 __first2, _ForwardIterator2 __last2,
_BinaryPredicate __pred, forward_iterator_tag,
forward_iterator_tag) {
// modeled after search algorithm
_ForwardIterator1 __r = __last1; // __last1 is the "default" answer
if (__first2 == __last2)
return __r;
while (true) {
while (true) {
if (__first1 == __last1) // if source exhausted return last correct answer
return __r; // (or __last1 if never found)
if (__pred(*__first1, *__first2))
break;
++__first1;
}
// *__first1 matches *__first2, now match elements after here
_ForwardIterator1 __m1 = __first1;
_ForwardIterator2 __m2 = __first2;
while (true) {
if (++__m2 == __last2) { // Pattern exhaused, record answer and search for another one
__r = __first1;
++__first1;
break;
}
if (++__m1 == __last1) // Source exhausted, return last answer
return __r;
if (!__pred(*__m1, *__m2)) // mismatch, restart with a new __first
{
++__first1;
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _BidirectionalIterator1, class _BidirectionalIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 _BidirectionalIterator1 __find_end(
_BidirectionalIterator1 __first1, _BidirectionalIterator1 __last1, _BidirectionalIterator2 __first2,
_BidirectionalIterator2 __last2, _BinaryPredicate __pred, bidirectional_iterator_tag, bidirectional_iterator_tag) {
// modeled after search algorithm (in reverse)
if (__first2 == __last2)
return __last1; // Everything matches an empty sequence
_BidirectionalIterator1 __l1 = __last1;
_BidirectionalIterator2 __l2 = __last2;
--__l2;
while (true) {
// Find last element in sequence 1 that matchs *(__last2-1), with a mininum of loop checks
while (true) {
if (__first1 == __l1) // return __last1 if no element matches *__first2
return __last1;
if (__pred(*--__l1, *__l2))
break;
}
// *__l1 matches *__l2, now match elements before here
_BidirectionalIterator1 __m1 = __l1;
_BidirectionalIterator2 __m2 = __l2;
while (true) {
if (__m2 == __first2) // If pattern exhausted, __m1 is the answer (works for 1 element pattern)
return __m1;
if (__m1 == __first1) // Otherwise if source exhaused, pattern not found
return __last1;
if (!__pred(*--__m1, *--__m2)) // if there is a mismatch, restart with a new __l1
{
break;
} // else there is a match, check next elements
}
}
}
template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _RandomAccessIterator1 __find_end(
_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
_RandomAccessIterator2 __last2, _BinaryPredicate __pred, random_access_iterator_tag, random_access_iterator_tag) {
// Take advantage of knowing source and pattern lengths. Stop short when source is smaller than pattern
typename iterator_traits<_RandomAccessIterator2>::difference_type __len2 = __last2 - __first2;
if (__len2 == 0)
return __last1;
typename iterator_traits<_RandomAccessIterator1>::difference_type __len1 = __last1 - __first1;
if (__len1 < __len2)
return __last1;
const _RandomAccessIterator1 __s = __first1 + (__len2 - 1); // End of pattern match can't go before here
_RandomAccessIterator1 __l1 = __last1;
_RandomAccessIterator2 __l2 = __last2;
--__l2;
while (true) {
while (true) {
if (__s == __l1)
return __last1;
if (__pred(*--__l1, *__l2))
break;
}
_RandomAccessIterator1 __m1 = __l1;
_RandomAccessIterator2 __m2 = __l2;
while (true) {
if (__m2 == __first2)
return __m1;
// no need to check range on __m1 because __s guarantees we have enough source
if (!__pred(*--__m1, *--__m2)) {
break;
}
}
}
}
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2,
_BinaryPredicate __pred) {
return _VSTD::__find_end<typename add_lvalue_reference<_BinaryPredicate>::type>(
__first1, __last1, __first2, __last2, __pred, typename iterator_traits<_ForwardIterator1>::iterator_category(),
typename iterator_traits<_ForwardIterator2>::iterator_category());
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
find_end(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) {
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::find_end(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_END_OF_H

libcxx/include/__algorithm/find_first_of.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
#define _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator1 __find_first_of_ce(_ForwardIterator1 __first1,
_ForwardIterator1 __last1,
_ForwardIterator2 __first2,
_ForwardIterator2 __last2, _BinaryPredicate __pred) {
for (; __first1 != __last1; ++__first1)
for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
if (__pred(*__first1, *__j))
return __first1;
return __last1;
}
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1
find_first_of(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
_ForwardIterator2 __last2, _BinaryPredicate __pred) {
return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __pred);
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _ForwardIterator1 find_first_of(
_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) {
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;
typedef typename iterator_traits<_ForwardIterator2>::value_type __v2;
return _VSTD::__find_first_of_ce(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_FIRST_OF_H

libcxx/include/__algorithm/find_if.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FIND_IF_H
#define _LIBCPP___ALGORITHM_FIND_IF_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _InputIterator
find_if(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (__pred(*__first))
break;
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_IF_H

libcxx/include/__algorithm/find_if_not.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FIND_IF_NOT_H
#define _LIBCPP___ALGORITHM_FIND_IF_NOT_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _InputIterator
find_if_not(_InputIterator __first, _InputIterator __last, _Predicate __pred) {
for (; __first != __last; ++__first)
if (!__pred(*__first))
break;
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FIND_IF_NOT_H

libcxx/include/__algorithm/for_each.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FOR_EACH_H
#define _LIBCPP___ALGORITHM_FOR_EACH_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Function>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _Function for_each(_InputIterator __first,
_InputIterator __last,
_Function __f) {
for (; __first != __last; ++__first)
__f(*__first);
return __f;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FOR_EACH_H

libcxx/include/__algorithm/for_each_n.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_FOR_EACH_N_H
#define _LIBCPP___ALGORITHM_FOR_EACH_N_H
#include <__config>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
#if _LIBCPP_STD_VER > 14
template <class _InputIterator, class _Size, class _Function>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 _InputIterator for_each_n(_InputIterator __first,
_Size __orig_n,
_Function __f) {
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
while (__n > 0) {
__f(*__first);
++__first;
--__n;
}
return __first;
}
#endif
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_FOR_EACH_N_H

libcxx/include/__algorithm/generate.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_GENERATE_H
#define _LIBCPP___ALGORITHM_GENERATE_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator, class _Generator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
void
generate(_ForwardIterator __first, _ForwardIterator __last, _Generator __gen)
{
for (; __first != __last; ++__first)
*__first = __gen();
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_GENERATE_H

libcxx/include/__algorithm/generate_n.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_GENERATE_N_H
#define _LIBCPP___ALGORITHM_GENERATE_N_H
#include <__config>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _OutputIterator, class _Size, class _Generator>
inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_OutputIterator
generate_n(_OutputIterator __first, _Size __orig_n, _Generator __gen)
{
typedef decltype(_VSTD::__convert_to_integral(__orig_n)) _IntegralSize;
_IntegralSize __n = __orig_n;
for (; __n > 0; ++__first, (void) --__n)
*__first = __gen();
return __first;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_GENERATE_N_H

libcxx/include/__algorithm/half_positive.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_HALF_POSITIVE_H
#define _LIBCPP___ALGORITHM_HALF_POSITIVE_H
#include <__config>
#include <type_traits>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
// Perform division by two quickly for positive integers (llvm.org/PR39129)
template <typename _Integral>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
typename enable_if
<
is_integral<_Integral>::value,
_Integral
>::type
__half_positive(_Integral __value)
{
return static_cast<_Integral>(static_cast<typename make_unsigned<_Integral>::type>(__value) / 2);
}
template <typename _Tp>
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR
typename enable_if
<
!is_integral<_Tp>::value,
_Tp
>::type
__half_positive(_Tp __value)
{
return __value / 2;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_HALF_POSITIVE_H

libcxx/include/__algorithm/includes.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_INCLUDES_H
#define _LIBCPP___ALGORITHM_INCLUDES_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Compare, class _InputIterator1, class _InputIterator2>
_LIBCPP_CONSTEXPR_AFTER_CXX17 bool
__includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_Compare __comp)
{
for (; __first2 != __last2; ++__first1)
{
if (__first1 == __last1 || __comp(*__first2, *__first1))
return false;
if (!__comp(*__first1, *__first2))
++__first2;
}
return true;
}
template <class _InputIterator1, class _InputIterator2, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
_Compare __comp)
{
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__includes<_Comp_ref>(__first1, __last1, __first2, __last2, __comp);
}
template <class _InputIterator1, class _InputIterator2>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2)
{
return _VSTD::includes(__first1, __last1, __first2, __last2,
__less<typename iterator_traits<_InputIterator1>::value_type,
typename iterator_traits<_InputIterator2>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_INCLUDES_H

libcxx/include/__algorithm/inplace_merge.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_INPLACE_MERGE_H
#define _LIBCPP___ALGORITHM_INPLACE_MERGE_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/comp_ref_type.h>
#include <__algorithm/rotate.h>
#include <__algorithm/lower_bound.h>
#include <__algorithm/min.h>
#include <__algorithm/upper_bound.h>
#include <__iterator/iterator_traits.h>
#include <memory>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _Predicate>
class __invert // invert the sense of a comparison
{
private:
_Predicate __p_;
public:
_LIBCPP_INLINE_VISIBILITY __invert() {}
_LIBCPP_INLINE_VISIBILITY
explicit __invert(_Predicate __p) : __p_(__p) {}
template <class _T1>
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _T1& __x) {return !__p_(__x);}
template <class _T1, class _T2>
_LIBCPP_INLINE_VISIBILITY
bool operator()(const _T1& __x, const _T2& __y) {return __p_(__y, __x);}
};
template <class _Compare, class _InputIterator1, class _InputIterator2,
class _OutputIterator>
void __half_inplace_merge(_InputIterator1 __first1, _InputIterator1 __last1,
_InputIterator2 __first2, _InputIterator2 __last2,
_OutputIterator __result, _Compare __comp)
{
for (; __first1 != __last1; ++__result)
{
if (__first2 == __last2)
{
_VSTD::move(__first1, __last1, __result);
return;
}
if (__comp(*__first2, *__first1))
{
*__result = _VSTD::move(*__first2);
++__first2;
}
else
{
*__result = _VSTD::move(*__first1);
++__first1;
}
}
// __first2 through __last2 are already in the right spot.
}
template <class _Compare, class _BidirectionalIterator>
void
__buffered_inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp, typename iterator_traits<_BidirectionalIterator>::difference_type __len1,
typename iterator_traits<_BidirectionalIterator>::difference_type __len2,
typename iterator_traits<_BidirectionalIterator>::value_type* __buff)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
__destruct_n __d(0);
unique_ptr<value_type, __destruct_n&> __h2(__buff, __d);
if (__len1 <= __len2)
{
value_type* __p = __buff;
for (_BidirectionalIterator __i = __first; __i != __middle; __d.template __incr<value_type>(), (void) ++__i, (void) ++__p)
::new ((void*)__p) value_type(_VSTD::move(*__i));
_VSTD::__half_inplace_merge<_Compare>(__buff, __p, __middle, __last, __first, __comp);
}
else
{
value_type* __p = __buff;
for (_BidirectionalIterator __i = __middle; __i != __last; __d.template __incr<value_type>(), (void) ++__i, (void) ++__p)
::new ((void*)__p) value_type(_VSTD::move(*__i));
typedef reverse_iterator<_BidirectionalIterator> _RBi;
typedef reverse_iterator<value_type*> _Rv;
typedef __invert<_Compare> _Inverted;
_VSTD::__half_inplace_merge<_Inverted>(_Rv(__p), _Rv(__buff),
_RBi(__middle), _RBi(__first),
_RBi(__last), _Inverted(__comp));
}
}
template <class _Compare, class _BidirectionalIterator>
void
__inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp, typename iterator_traits<_BidirectionalIterator>::difference_type __len1,
typename iterator_traits<_BidirectionalIterator>::difference_type __len2,
typename iterator_traits<_BidirectionalIterator>::value_type* __buff, ptrdiff_t __buff_size)
{
typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
while (true)
{
// if __middle == __last, we're done
if (__len2 == 0)
return;
if (__len1 <= __buff_size || __len2 <= __buff_size)
return _VSTD::__buffered_inplace_merge<_Compare>
(__first, __middle, __last, __comp, __len1, __len2, __buff);
// shrink [__first, __middle) as much as possible (with no moves), returning if it shrinks to 0
for (; true; ++__first, (void) --__len1)
{
if (__len1 == 0)
return;
if (__comp(*__middle, *__first))
break;
}
// __first < __middle < __last
// *__first > *__middle
// partition [__first, __m1) [__m1, __middle) [__middle, __m2) [__m2, __last) such that
// all elements in:
// [__first, __m1) <= [__middle, __m2)
// [__middle, __m2) < [__m1, __middle)
// [__m1, __middle) <= [__m2, __last)
// and __m1 or __m2 is in the middle of its range
_BidirectionalIterator __m1; // "median" of [__first, __middle)
_BidirectionalIterator __m2; // "median" of [__middle, __last)
difference_type __len11; // distance(__first, __m1)
difference_type __len21; // distance(__middle, __m2)
// binary search smaller range
if (__len1 < __len2)
{ // __len >= 1, __len2 >= 2
__len21 = __len2 / 2;
__m2 = __middle;
_VSTD::advance(__m2, __len21);
__m1 = _VSTD::__upper_bound<_Compare>(__first, __middle, *__m2, __comp);
__len11 = _VSTD::distance(__first, __m1);
}
else
{
if (__len1 == 1)
{ // __len1 >= __len2 && __len2 > 0, therefore __len2 == 1
// It is known *__first > *__middle
swap(*__first, *__middle);
return;
}
// __len1 >= 2, __len2 >= 1
__len11 = __len1 / 2;
__m1 = __first;
_VSTD::advance(__m1, __len11);
__m2 = _VSTD::__lower_bound<_Compare>(__middle, __last, *__m1, __comp);
__len21 = _VSTD::distance(__middle, __m2);
}
difference_type __len12 = __len1 - __len11; // distance(__m1, __middle)
difference_type __len22 = __len2 - __len21; // distance(__m2, __last)
// [__first, __m1) [__m1, __middle) [__middle, __m2) [__m2, __last)
// swap middle two partitions
__middle = _VSTD::rotate(__m1, __middle, __m2);
// __len12 and __len21 now have swapped meanings
// merge smaller range with recursive call and larger with tail recursion elimination
if (__len11 + __len21 < __len12 + __len22)
{
_VSTD::__inplace_merge<_Compare>(__first, __m1, __middle, __comp, __len11, __len21, __buff, __buff_size);
// _VSTD::__inplace_merge<_Compare>(__middle, __m2, __last, __comp, __len12, __len22, __buff, __buff_size);
__first = __middle;
__middle = __m2;
__len1 = __len12;
__len2 = __len22;
}
else
{
_VSTD::__inplace_merge<_Compare>(__middle, __m2, __last, __comp, __len12, __len22, __buff, __buff_size);
// _VSTD::__inplace_merge<_Compare>(__first, __m1, __middle, __comp, __len11, __len21, __buff, __buff_size);
__last = __middle;
__middle = __m1;
__len1 = __len11;
__len2 = __len21;
}
}
}
template <class _BidirectionalIterator, class _Compare>
inline _LIBCPP_INLINE_VISIBILITY
void
inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last,
_Compare __comp)
{
typedef typename iterator_traits<_BidirectionalIterator>::value_type value_type;
typedef typename iterator_traits<_BidirectionalIterator>::difference_type difference_type;
difference_type __len1 = _VSTD::distance(__first, __middle);
difference_type __len2 = _VSTD::distance(__middle, __last);
difference_type __buf_size = _VSTD::min(__len1, __len2);
pair<value_type*, ptrdiff_t> __buf = _VSTD::get_temporary_buffer<value_type>(__buf_size);
unique_ptr<value_type, __return_temporary_buffer> __h(__buf.first);
typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
return _VSTD::__inplace_merge<_Comp_ref>(__first, __middle, __last, __comp, __len1, __len2,
__buf.first, __buf.second);
}
template <class _BidirectionalIterator>
inline _LIBCPP_INLINE_VISIBILITY
void
inplace_merge(_BidirectionalIterator __first, _BidirectionalIterator __middle, _BidirectionalIterator __last)
{
_VSTD::inplace_merge(__first, __middle, __last,
__less<typename iterator_traits<_BidirectionalIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_INPLACE_MERGE_H

libcxx/include/__algorithm/is_heap.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_IS_HEAP_H
#define _LIBCPP___ALGORITHM_IS_HEAP_H
#include <__config>
#include <__algorithm/comp.h>
#include <__algorithm/is_heap_until.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _RandomAccessIterator, class _Compare>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
return _VSTD::is_heap_until(__first, __last, __comp) == __last;
}
template<class _RandomAccessIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
bool
is_heap(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
return _VSTD::is_heap(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_HEAP_H

libcxx/include/__algorithm/is_heap_until.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H
#define _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H
#include <__config>
#include <__algorithm/comp.h>
#include <__iterator/iterator_traits.h>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _RandomAccessIterator, class _Compare>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 _RandomAccessIterator
is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last, _Compare __comp)
{
typedef typename iterator_traits<_RandomAccessIterator>::difference_type difference_type;
difference_type __len = __last - __first;
difference_type __p = 0;
difference_type __c = 1;
_RandomAccessIterator __pp = __first;
while (__c < __len)
{
_RandomAccessIterator __cp = __first + __c;
if (__comp(*__pp, *__cp))
return __cp;
++__c;
++__cp;
if (__c == __len)
return __last;
if (__comp(*__pp, *__cp))
return __cp;
++__p;
++__pp;
__c = 2 * __p + 1;
}
return __last;
}
template<class _RandomAccessIterator>
_LIBCPP_NODISCARD_EXT inline
_LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17
_RandomAccessIterator
is_heap_until(_RandomAccessIterator __first, _RandomAccessIterator __last)
{
return _VSTD::is_heap_until(__first, __last, __less<typename iterator_traits<_RandomAccessIterator>::value_type>());
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_HEAP_UNTIL_H

libcxx/include/__algorithm/is_partitioned.h

  • This file was added.
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_IS_PARTITIONED_H
#define _LIBCPP___ALGORITHM_IS_PARTITIONED_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _InputIterator, class _Predicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_partitioned(_InputIterator __first, _InputIterator __last, _Predicate __pred)
{
for (; __first != __last; ++__first)
if (!__pred(*__first))
break;
if ( __first == __last )
return true;
++__first;
for (; __first != __last; ++__first)
if (__pred(*__first))
return false;
return true;
}
_LIBCPP_END_NAMESPACE_STD
_LIBCPP_POP_MACROS
#endif // _LIBCPP___ALGORITHM_IS_PARTITIONED_H

libcxx/include/__algorithm/is_permutation.h

  • This file was added.
// -*- C++ -*-
//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___ALGORITHM_IS_PERMUTATION_H
#define _LIBCPP___ALGORITHM_IS_PERMUTATION_H
#include <__algorithm/comp.h>
#include <__config>
#include <__iterator/iterator_traits.h>
#include <__iterator/next.h>
#include <iterator> // FIXME: replace with <__iterator/distance.h> when it lands
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
_LIBCPP_NODISCARD_EXT _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2,
_BinaryPredicate __pred) {
// shorten sequences as much as possible by lopping of any equal prefix
for (; __first1 != __last1; ++__first1, (void)++__first2)
if (!__pred(*__first1, *__first2))
break;
if (__first1 == __last1)
return true;
// __first1 != __last1 && *__first1 != *__first2
typedef typename iterator_traits<_ForwardIterator1>::difference_type _D1;
_D1 __l1 = _VSTD::distance(__first1, __last1);
if (__l1 == _D1(1))
return false;
_ForwardIterator2 __last2 = _VSTD::next(__first2, __l1);
// For each element in [f1, l1) see if there are the same number of
// equal elements in [f2, l2)
for (_ForwardIterator1 __i = __first1; __i != __last1; ++__i) {
// Have we already counted the number of *__i in [f1, l1)?
_ForwardIterator1 __match = __first1;
for (; __match != __i; ++__match)
if (__pred(*__match, *__i))
break;
if (__match == __i) {
// Count number of *__i in [f2, l2)
_D1 __c2 = 0;
for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
if (__pred(*__i, *__j))
++__c2;
if (__c2 == 0)
return false;
// Count number of *__i in [__i, l1) (we can start with 1)
_D1 __c1 = 1;
for (_ForwardIterator1 __j = _VSTD::next(__i); __j != __last1; ++__j)
if (__pred(*__i, *__j))
++__c1;
if (__c1 != __c2)
return false;
}
}
return true;
}
template <class _ForwardIterator1, class _ForwardIterator2>
_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
is_permutation(_ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2) {
typedef typename iterator_traits<_ForwardIterator1>::value_type __v1;