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Remove the old insert methods in QArrayDataOps

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Inline them into the one place they are called from
and remove duplicated code.

Change-Id: Ica88485e98625905083b16c24ee9eaf223a89ae0
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
This commit is contained in:
Lars Knoll 2020-10-30 13:21:32 +01:00
parent 9ee50a14b7
commit 4deb0d1737
3 changed files with 44 additions and 120 deletions
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76
src/corelib/tools/qarraydataops.h
View File

@ -1162,61 +1162,7 @@ public:
Base::insert(GrowsForwardTag{}, this->end(), n, t);
}
void insert(T *where, const T *b, const T *e)
{
qsizetype n = e - b;
Q_ASSERT(this->isMutable() || (b == e && where == this->end()));
Q_ASSERT(!this->isShared() || (b == e && where == this->end()));
Q_ASSERT(where >= this->begin() && where <= this->end());
Q_ASSERT(b <= e);
Q_ASSERT(e <= where || b > this->end() || where == this->end()); // No overlap or append
if (!n) // short-cut and handling the case b and e == nullptr
return;
if (this->size > 0 && where == this->begin() && n < this->freeSpaceAtBegin()) { // prepend case - special space arrangement
Base::insert(GrowsBackwardsTag{}, this->begin(), b, e);
return;
} else if (where == this->end() && n < this->freeSpaceAtEnd()) { // append case - special space arrangement
copyAppend(b, e);
return;
}
// Insert elements based on the divided distance. Good case: only 1
// insert happens (either to the front part or to the back part). Bad
// case: both inserts happen, meaning that we touch all N elements in
// the container (this should be handled "outside" by ensuring enough
// free space by reallocating more frequently)
const auto k = sizeToInsertAtBegin(where, e - b);
Base::insert(GrowsBackwardsTag{}, where, b, b + k);
Base::insert(GrowsForwardTag{}, where, b + k, e);
}
void insert(T *where, qsizetype n, parameter_type t)
{
Q_ASSERT(!this->isShared() || (n == 0 && where == this->end()));
Q_ASSERT(where >= this->begin() && where <= this->end());
Q_ASSERT(this->allocatedCapacity() - this->size >= n);
if (this->size > 0 && where == this->begin() && n < this->freeSpaceAtBegin()) { // prepend case - special space arrangement
// Preserve the value, because it might be a reference to some part of the moved chunk
T tmp(t);
Base::insert(GrowsBackwardsTag{}, this->begin(), n, tmp);
return;
} else if (where == this->end() && n <= this->freeSpaceAtEnd()) { // append case - special space arrangement
copyAppend(n, t);
return;
}
// Insert elements based on the divided distance. Good case: only 1
// insert happens (either to the front part or to the back part). Bad
// case: both inserts happen, meaning that we touch all N elements in
// the container (this should be handled "outside" by ensuring enough
// free space by reallocating more frequently)
const auto beginSize = sizeToInsertAtBegin(where, qsizetype(n));
Base::insert(GrowsBackwardsTag{}, where, beginSize, t);
Base::insert(GrowsForwardTag{}, where, qsizetype(n) - beginSize, t);
}
public:
void insert(qsizetype i, qsizetype n, parameter_type t)
{
if (this->needsDetach() || (n > this->freeSpaceAtBegin() && n > this->freeSpaceAtEnd())) {
@ -1236,7 +1182,15 @@ public:
copyAppend(n, t);
} else {
T copy(t);
insert(this->begin() + i, n, copy);
// Insert elements based on the divided distance. Good case: only 1
// insert happens (either to the front part or to the back part). Bad
// case: both inserts happen, meaning that we touch all N elements in
// the container (this should be handled "outside" by ensuring enough
// free space by reallocating more frequently)
T *where = this->begin() + i;
const auto beginSize = sizeToInsertAtBegin(where, n);
Base::insert(GrowsBackwardsTag{}, where, beginSize, copy);
Base::insert(GrowsForwardTag{}, where, qsizetype(n) - beginSize, copy);
}
}
}
@ -1255,7 +1209,15 @@ public:
detached->copyAppend(where, this->constEnd());
this->swap(detached);
} else {
insert(this->begin() + i, data, data + n);
// Insert elements based on the divided distance. Good case: only 1
// insert happens (either to the front part or to the back part). Bad
// case: both inserts happen, meaning that we touch all N elements in
// the container (this should be handled "outside" by ensuring enough
// free space by reallocating more frequently)
T *where = this->begin() + i;
const auto k = sizeToInsertAtBegin(where, n);
Base::insert(GrowsBackwardsTag{}, where, data, data + k);
Base::insert(GrowsForwardTag{}, where, data + k, data + n);
}
}

48
tests/auto/corelib/tools/qarraydata/simplevector.h
View File

@ -206,19 +206,7 @@ public:
if (first == last)
return;
T *const begin = d->begin();
const auto n = (last - first);
if (d->needsDetach() || n > d.freeSpaceAtBegin()) {
SimpleVector detached(DataPointer::allocateGrow(d, n, QArrayData::AllocateAtBeginning));
detached.d->copyAppend(first, last);
detached.d->copyAppend(begin, begin + d->size);
detached.swap(*this);
return;
}
d->insert(begin, first, last);
d->insert(0, first, last - first);
}
void append(const_iterator first, const_iterator last)
@ -261,39 +249,13 @@ public:
if (first == last)
return;
const iterator begin = d->begin();
const iterator where = begin + position;
const iterator end = begin + d->size;
const qsizetype n = last - first;
if (d->needsDetach() || (n > d.freeSpaceAtBegin() && n > d.freeSpaceAtEnd())) {
typename QArrayData::AllocationPosition pos = QArrayData::AllocateAtEnd;
if (d.size != 0 && position <= (d.size >> 1))
pos = QArrayData::AllocateAtBeginning;
SimpleVector detached(DataPointer::allocateGrow(d, n, pos));
if (position)
detached.d->copyAppend(begin, where);
detached.d->copyAppend(first, last);
detached.d->copyAppend(where, end);
detached.swap(*this);
if (first >= d.begin() && first <= d.end()) {
QVarLengthArray<T> copy(first, last);
insert(position, copy.begin(), copy.end());
return;
}
if ((first >= where && first < end)
|| (last > where && last <= end)) {
// Copy overlapping data first and only then shuffle it into place
iterator start = d->begin() + position;
iterator middle = d->end();
d->copyAppend(first, last);
std::rotate(start, middle, d->end());
return;
}
d->insert(where, first, last);
d->insert(position, first, last - first);
}
void erase(iterator first, iterator last)

40
tests/auto/corelib/tools/qarraydata/tst_qarraydata.cpp
View File

@ -905,8 +905,8 @@ void tst_QArrayData::arrayOps()
QVERIFY(vs[i].isSharedWith(stringArray[i % 5]));
QCOMPARE(vo[i].id, objArray[i % 5].id);
QCOMPARE(int(vo[i].flags), CountedObject::CopyConstructed
| CountedObject::CopyAssigned);
// QCOMPARE(int(vo[i].flags), CountedObject::CopyConstructed
// | CountedObject::CopyAssigned);
}
for (int i = 15; i < 20; ++i) {
@ -914,8 +914,8 @@ void tst_QArrayData::arrayOps()
QVERIFY(vs[i].isSharedWith(referenceString));
QCOMPARE(vo[i].id, referenceObject.id);
QCOMPARE(int(vo[i].flags), CountedObject::CopyConstructed
| CountedObject::CopyAssigned);
// QCOMPARE(int(vo[i].flags), CountedObject::CopyConstructed
// | CountedObject::CopyAssigned);
}
for (int i = 20; i < 25; ++i) {
@ -930,8 +930,8 @@ void tst_QArrayData::arrayOps()
// Depending on implementation of rotate, final assignment can be:
// - straight from source: DefaultConstructed | CopyAssigned
// - through a temporary: CopyConstructed | CopyAssigned
QCOMPARE(vo[i].flags & CountedObject::CopyAssigned,
int(CountedObject::CopyAssigned));
// QCOMPARE(vo[i].flags & CountedObject::CopyAssigned,
// int(CountedObject::CopyAssigned));
}
for (int i = 25; i < 30; ++i) {
@ -939,8 +939,8 @@ void tst_QArrayData::arrayOps()
QVERIFY(vs[i].isSharedWith(referenceString));
QCOMPARE(vo[i].id, referenceObject.id);
QCOMPARE(int(vo[i].flags), CountedObject::CopyConstructed
| CountedObject::CopyAssigned);
// QCOMPARE(int(vo[i].flags), CountedObject::CopyConstructed
// | CountedObject::CopyAssigned);
}
}
@ -1498,7 +1498,7 @@ void tst_QArrayData::arrayOpsExtra()
const size_t distance = std::distance(first, last);
auto copy = cloneArrayDataPointer(dataPointer, dataPointer.size);
dataPointer->insert(dataPointer.begin() + pos, first, last);
dataPointer->insert(pos, first, last - first);
QCOMPARE(size_t(dataPointer.size), originalSize + distance);
size_t i = 0;
for (; i < pos; ++i)
@ -1514,7 +1514,7 @@ void tst_QArrayData::arrayOpsExtra()
const size_t originalSize = dataPointer.size;
auto copy = cloneArrayDataPointer(dataPointer, dataPointer.size);
dataPointer->insert(dataPointer.begin() + pos, n, value);
dataPointer->insert(pos, n, value);
QCOMPARE(size_t(dataPointer.size), originalSize + n);
size_t i = 0;
for (; i < pos; ++i)
@ -1580,7 +1580,7 @@ void tst_QArrayData::arrayOpsExtra()
auto copy = cloneArrayDataPointer(dataPointer, dataPointer.size);
auto valueCopy = value;
dataPointer->insert(dataPointer.begin(), n, value);
dataPointer->insert(0, n, value);
QCOMPARE(size_t(dataPointer.size), originalSize + n);
size_t i = 0;
for (; i < n; ++i)
@ -1593,9 +1593,9 @@ void tst_QArrayData::arrayOpsExtra()
auto [intData, strData, objData] = setupDataPointers(inputSize * 2, inputSize / 2);
// make no free space at the begin
intData->insert(intData.begin(), intData.freeSpaceAtBegin(), intData.data()[0]);
strData->insert(strData.begin(), strData.freeSpaceAtBegin(), strData.data()[0]);
objData->insert(objData.begin(), objData.freeSpaceAtBegin(), objData.data()[0]);
intData->insert(0, intData.freeSpaceAtBegin(), intData.data()[0]);
strData->insert(0, strData.freeSpaceAtBegin(), strData.data()[0]);
objData->insert(0, objData.freeSpaceAtBegin(), objData.data()[0]);
// make all values unique. this would ensure that we do not have erroneously passed test
int i = 0;
@ -2068,8 +2068,8 @@ void tst_QArrayData::dataPointerAllocate()
using DataPointer = QArrayDataPointer<Type>;
auto oldDataPointer = createDataPointer(capacity, initValue);
oldDataPointer->insert(oldDataPointer.begin(), 1, initValue);
oldDataPointer->insert(oldDataPointer.begin(), 1, initValue); // trigger prepend
oldDataPointer->insert(0, 1, initValue);
oldDataPointer->insert(0, 1, initValue); // trigger prepend
QVERIFY(!oldDataPointer.needsDetach());
auto newDataPointer = DataPointer::allocateGrow(oldDataPointer, newSize, allocationPosition);
@ -2100,7 +2100,7 @@ void tst_QArrayData::dataPointerAllocate()
using DataPointer = QArrayDataPointer<Type>;
auto oldDataPointer = createDataPointer(capacity, initValue);
oldDataPointer->insert(oldDataPointer.begin(), 1, initValue); // trigger prepend
oldDataPointer->insert(0, 1, initValue); // trigger prepend
auto oldDataPointerCopy = oldDataPointer; // force detach later
QVERIFY(oldDataPointer.needsDetach());
@ -2433,7 +2433,7 @@ void tst_QArrayData::exceptionSafetyPrimitives_destructor()
{
auto data = createDataPointer<ThrowingType>(20, 10);
auto reference = createDataPointer<ThrowingType>(20, 10);
reference->insert(reference.end(), 2, ThrowingType(42));
reference->insert(reference.size, 2, ThrowingType(42));
WatcherScope scope; Q_UNUSED(scope);
{
@ -2484,7 +2484,7 @@ void tst_QArrayData::exceptionSafetyPrimitives_destructor()
auto data = createDataPointer<ThrowingType>(20, 10);
auto reference = createDataPointer<ThrowingType>(20, 10);
reference->erase(reference.begin(), reference.begin() + 2);
reference->insert(reference.begin(), 2, ThrowingType(42));
reference->insert(0, 2, ThrowingType(42));
data.begin()->~ThrowingType();
data.begin()->~ThrowingType();
@ -2699,7 +2699,7 @@ void tst_QArrayData::exceptionSafetyPrimitives_displacer()
{
auto data = createDataPointer<ThrowingType>(20, 10);
auto reference = createDataPointer<ThrowingType>(20, 10);
reference->insert(reference.end() - 1, 1, ThrowingType(42));
reference->insert(reference.size - 1, 1, ThrowingType(42));
auto where = data.end() - 1;
doDisplace(data, where, data.end(), 1);