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-rw-r--r--absl/container/inlined_vector.h120
1 files changed, 44 insertions, 76 deletions
diff --git a/absl/container/inlined_vector.h b/absl/container/inlined_vector.h
index c31c319c..046182dd 100644
--- a/absl/container/inlined_vector.h
+++ b/absl/container/inlined_vector.h
@@ -100,9 +100,8 @@ class InlinedVector {
// InlinedVector Constructors and Destructor
// ---------------------------------------------------------------------------
- // Creates an empty inlined vector with a default initialized allocator.
- InlinedVector() noexcept(noexcept(allocator_type()))
- : storage_(allocator_type()) {}
+ // Creates an empty inlined vector with a value-initialized allocator.
+ InlinedVector() noexcept(noexcept(allocator_type())) : storage_() {}
// Creates an empty inlined vector with a specified allocator.
explicit InlinedVector(const allocator_type& alloc) noexcept
@@ -112,22 +111,40 @@ class InlinedVector {
explicit InlinedVector(size_type n,
const allocator_type& alloc = allocator_type())
: storage_(alloc) {
- InitAssign(n);
+ if (n > static_cast<size_type>(N)) {
+ pointer new_data = AllocatorTraits::allocate(*storage_.GetAllocPtr(), n);
+ storage_.SetAllocatedData(new_data, n);
+ UninitializedFill(storage_.GetAllocatedData(),
+ storage_.GetAllocatedData() + n);
+ storage_.SetAllocatedSize(n);
+ } else {
+ UninitializedFill(storage_.GetInlinedData(),
+ storage_.GetInlinedData() + n);
+ storage_.SetInlinedSize(n);
+ }
}
// Creates an inlined vector with `n` copies of `v`.
InlinedVector(size_type n, const_reference v,
const allocator_type& alloc = allocator_type())
: storage_(alloc) {
- InitAssign(n, v);
+ if (n > static_cast<size_type>(N)) {
+ pointer new_data = AllocatorTraits::allocate(*storage_.GetAllocPtr(), n);
+ storage_.SetAllocatedData(new_data, n);
+ UninitializedFill(storage_.GetAllocatedData(),
+ storage_.GetAllocatedData() + n, v);
+ storage_.SetAllocatedSize(n);
+ } else {
+ UninitializedFill(storage_.GetInlinedData(),
+ storage_.GetInlinedData() + n, v);
+ storage_.SetInlinedSize(n);
+ }
}
// Creates an inlined vector of copies of the values in `list`.
InlinedVector(std::initializer_list<value_type> list,
const allocator_type& alloc = allocator_type())
- : storage_(alloc) {
- AppendForwardRange(list.begin(), list.end());
- }
+ : InlinedVector(list.begin(), list.end(), alloc) {}
// Creates an inlined vector with elements constructed from the provided
// forward iterator range [`first`, `last`).
@@ -140,7 +157,15 @@ class InlinedVector {
InlinedVector(ForwardIterator first, ForwardIterator last,
const allocator_type& alloc = allocator_type())
: storage_(alloc) {
- AppendForwardRange(first, last);
+ auto length = std::distance(first, last);
+ reserve(size() + length);
+ if (storage_.GetIsAllocated()) {
+ UninitializedCopy(first, last, storage_.GetAllocatedData() + size());
+ storage_.SetAllocatedSize(size() + length);
+ } else {
+ UninitializedCopy(first, last, storage_.GetInlinedData() + size());
+ storage_.SetInlinedSize(size() + length);
+ }
}
// Creates an inlined vector with elements constructed from the provided input
@@ -193,8 +218,8 @@ class InlinedVector {
if (other.storage_.GetIsAllocated()) {
// We can just steal the underlying buffer from the source.
// That leaves the source empty, so we clear its size.
- storage_.SetAllocatedData(other.storage_.GetAllocatedData());
- storage_.SetAllocatedCapacity(other.storage_.GetAllocatedCapacity());
+ storage_.SetAllocatedData(other.storage_.GetAllocatedData(),
+ other.storage_.GetAllocatedCapacity());
storage_.SetAllocatedSize(other.size());
other.storage_.SetInlinedSize(0);
} else {
@@ -227,8 +252,8 @@ class InlinedVector {
if (*storage_.GetAllocPtr() == *other.storage_.GetAllocPtr()) {
// We can just steal the allocation from the source.
storage_.SetAllocatedSize(other.size());
- storage_.SetAllocatedData(other.storage_.GetAllocatedData());
- storage_.SetAllocatedCapacity(other.storage_.GetAllocatedCapacity());
+ storage_.SetAllocatedData(other.storage_.GetAllocatedData(),
+ other.storage_.GetAllocatedCapacity());
other.storage_.SetInlinedSize(0);
} else {
// We need to use our own allocator
@@ -248,7 +273,7 @@ class InlinedVector {
}
}
- ~InlinedVector() { clear(); }
+ ~InlinedVector() {}
// ---------------------------------------------------------------------------
// InlinedVector Member Accessors
@@ -473,8 +498,8 @@ class InlinedVector {
if (other.storage_.GetIsAllocated()) {
clear();
storage_.SetAllocatedSize(other.size());
- storage_.SetAllocatedData(other.storage_.GetAllocatedData());
- storage_.SetAllocatedCapacity(other.storage_.GetAllocatedCapacity());
+ storage_.SetAllocatedData(other.storage_.GetAllocatedData(),
+ other.storage_.GetAllocatedCapacity());
other.storage_.SetInlinedSize(0);
} else {
if (storage_.GetIsAllocated()) clear();
@@ -793,16 +818,8 @@ class InlinedVector {
// Destroys all elements in the inlined vector, sets the size of `0` and
// deallocates the heap allocation if the inlined vector was allocated.
void clear() noexcept {
- const bool is_allocated = storage_.GetIsAllocated();
- pointer the_data =
- is_allocated ? storage_.GetAllocatedData() : storage_.GetInlinedData();
- inlined_vector_internal::DestroyElements(storage_.GetAllocPtr(), the_data,
- storage_.GetSize());
+ storage_.DestroyAndDeallocate();
storage_.SetInlinedSize(0);
- if (is_allocated) {
- AllocatorTraits::deallocate(*storage_.GetAllocPtr(), the_data,
- storage_.GetAllocatedCapacity());
- }
}
// `InlinedVector::reserve()`
@@ -883,8 +900,7 @@ class InlinedVector {
Destroy(storage_.GetInlinedData(), storage_.GetInlinedData() + size());
}
- storage_.SetAllocatedData(new_data);
- storage_.SetAllocatedCapacity(new_capacity);
+ storage_.SetAllocatedData(new_data, new_capacity);
storage_.SetAllocatedSize(new_size);
}
@@ -1032,53 +1048,6 @@ class InlinedVector {
return new_element;
}
- void InitAssign(size_type n) {
- if (n > static_cast<size_type>(N)) {
- pointer new_data = AllocatorTraits::allocate(*storage_.GetAllocPtr(), n);
- storage_.SetAllocatedData(new_data);
- storage_.SetAllocatedCapacity(n);
- UninitializedFill(storage_.GetAllocatedData(),
- storage_.GetAllocatedData() + n);
- storage_.SetAllocatedSize(n);
- } else {
- UninitializedFill(storage_.GetInlinedData(),
- storage_.GetInlinedData() + n);
- storage_.SetInlinedSize(n);
- }
- }
-
- void InitAssign(size_type n, const_reference v) {
- if (n > static_cast<size_type>(N)) {
- pointer new_data = AllocatorTraits::allocate(*storage_.GetAllocPtr(), n);
- storage_.SetAllocatedData(new_data);
- storage_.SetAllocatedCapacity(n);
- UninitializedFill(storage_.GetAllocatedData(),
- storage_.GetAllocatedData() + n, v);
- storage_.SetAllocatedSize(n);
- } else {
- UninitializedFill(storage_.GetInlinedData(),
- storage_.GetInlinedData() + n, v);
- storage_.SetInlinedSize(n);
- }
- }
-
- template <typename ForwardIt>
- void AppendForwardRange(ForwardIt first, ForwardIt last) {
- static_assert(absl::inlined_vector_internal::IsAtLeastForwardIterator<
- ForwardIt>::value,
- "");
-
- auto length = std::distance(first, last);
- reserve(size() + length);
- if (storage_.GetIsAllocated()) {
- UninitializedCopy(first, last, storage_.GetAllocatedData() + size());
- storage_.SetAllocatedSize(size() + length);
- } else {
- UninitializedCopy(first, last, storage_.GetInlinedData() + size());
- storage_.SetInlinedSize(size() + length);
- }
- }
-
iterator InsertWithCount(const_iterator position, size_type n,
const_reference v) {
assert(position >= begin() && position <= end());
@@ -1191,8 +1160,7 @@ class InlinedVector {
a->Destroy(a->storage_.GetInlinedData(),
a->storage_.GetInlinedData() + a_size);
- a->storage_.SetAllocatedData(b_data);
- a->storage_.SetAllocatedCapacity(b_capacity);
+ a->storage_.SetAllocatedData(b_data, b_capacity);
if (*a->storage_.GetAllocPtr() != *b->storage_.GetAllocPtr()) {
swap(*a->storage_.GetAllocPtr(), *b->storage_.GetAllocPtr());
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-13 01:58:59 +0000