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Export of internal Abseil changes.

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--
ed3a3431eee9e48e6553b0320e0308d2dde6725c by Derek Mauro <dmauro@google.com>:

Project import generated by Copybara.

PiperOrigin-RevId: 258631680
GitOrigin-RevId: ed3a3431eee9e48e6553b0320e0308d2dde6725c
Change-Id: I1d7ae86a79783842092d29504605ba039c369603
This commit is contained in:
Abseil Team 2019-07-17 16:35:47 -04:00 • committed by Derek Mauro
parent 44efe96dfc
commit c6c3c1b498
32 changed files with 1168 additions and 657 deletions
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23
absl/container/internal/common.h
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@ -77,10 +77,18 @@ class node_handle_base {
protected:
friend struct CommonAccess;
node_handle_base(const allocator_type& a, slot_type* s) : alloc_(a) {
struct transfer_tag_t {};
node_handle_base(transfer_tag_t, const allocator_type& a, slot_type* s)
: alloc_(a) {
PolicyTraits::transfer(alloc(), slot(), s);
}
struct move_tag_t {};
node_handle_base(move_tag_t, const allocator_type& a, slot_type* s)
: alloc_(a) {
PolicyTraits::construct(alloc(), slot(), s);
}
void destroy() {
if (!empty()) {
PolicyTraits::destroy(alloc(), slot());
@ -121,7 +129,7 @@ class node_handle : public node_handle_base<PolicyTraits, Alloc> {
private:
friend struct CommonAccess;
node_handle(const Alloc& a, typename Base::slot_type* s) : Base(a, s) {}
using Base::Base;
};
// For maps.
@ -148,7 +156,7 @@ class node_handle<Policy, PolicyTraits, Alloc,
private:
friend struct CommonAccess;
node_handle(const Alloc& a, typename Base::slot_type* s) : Base(a, s) {}
using Base::Base;
};
// Provide access to non-public node-handle functions.
@ -164,8 +172,13 @@ struct CommonAccess {
}
template <typename T, typename... Args>
static T Make(Args&&... args) {
return T(std::forward<Args>(args)...);
static T Transfer(Args&&... args) {
return T(typename T::transfer_tag_t{}, std::forward<Args>(args)...);
}
template <typename T, typename... Args>
static T Move(Args&&... args) {
return T(typename T::move_tag_t{}, std::forward<Args>(args)...);
}
};