protected:
SmallVectorBase(size_t Size)
: BeginX(&FirstEl), EndX(&FirstEl), CapacityX((char*)&FirstEl+Size) {}
protected:
SmallVectorBase(size_t Size)
: BeginX(&FirstEl), EndX(&FirstEl), CapacityX((char*)&FirstEl+Size) {}
/// isSmall - Return true if this is a smallvector which has not had dynamic
/// memory allocated for it.
bool isSmall() const {
return BeginX == static_cast<const void*>(&FirstEl);
}
/// isSmall - Return true if this is a smallvector which has not had dynamic
/// memory allocated for it.
bool isSmall() const {
return BeginX == static_cast<const void*>(&FirstEl);
}
/// size_in_bytes - This returns size()*sizeof(T).
size_t size_in_bytes() const {
return size_t((char*)EndX - (char*)BeginX);
}
/// size_in_bytes - This returns size()*sizeof(T).
size_t size_in_bytes() const {
return size_t((char*)EndX - (char*)BeginX);
}
/// capacity_in_bytes - This returns capacity()*sizeof(T).
size_t capacity_in_bytes() const {
return size_t((char*)CapacityX - (char*)BeginX);
}
/// capacity_in_bytes - This returns capacity()*sizeof(T).
size_t capacity_in_bytes() const {
return size_t((char*)CapacityX - (char*)BeginX);
}
/// grow_pod - This is an implementation of the grow() method which only works
/// on POD-like datatypes and is out of line to reduce code duplication.
void grow_pod(size_t MinSizeInBytes, size_t TSize);
/// grow_pod - This is an implementation of the grow() method which only works
/// on POD-like datatypes and is out of line to reduce code duplication.
void grow_pod(size_t MinSizeInBytes, size_t TSize);
void setEnd(T *P) { this->EndX = P; }
public:
SmallVectorTemplateCommon(size_t Size) : SmallVectorBase(Size) {}
void setEnd(T *P) { this->EndX = P; }
public:
SmallVectorTemplateCommon(size_t Size) : SmallVectorBase(Size) {}
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef T value_type;
typedef T *iterator;
typedef const T *const_iterator;
typedef size_t size_type;
typedef ptrdiff_t difference_type;
typedef T value_type;
typedef T *iterator;
typedef const T *const_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
typedef std::reverse_iterator<iterator> reverse_iterator;
// forward iterator creation methods.
iterator begin() { return (iterator)this->BeginX; }
const_iterator begin() const { return (const_iterator)this->BeginX; }
// forward iterator creation methods.
iterator begin() { return (iterator)this->BeginX; }
const_iterator begin() const { return (const_iterator)this->BeginX; }
iterator capacity_ptr() { return (iterator)this->CapacityX; }
const_iterator capacity_ptr() const { return (const_iterator)this->CapacityX;}
public:
iterator capacity_ptr() { return (iterator)this->CapacityX; }
const_iterator capacity_ptr() const { return (const_iterator)this->CapacityX;}
public:
// reverse iterator creation methods.
reverse_iterator rbegin() { return reverse_iterator(end()); }
const_reverse_iterator rbegin() const{ return const_reverse_iterator(end()); }
// reverse iterator creation methods.
reverse_iterator rbegin() { return reverse_iterator(end()); }
const_reverse_iterator rbegin() const{ return const_reverse_iterator(end()); }
size_type size() const { return end()-begin(); }
size_type max_size() const { return size_type(-1) / sizeof(T); }
size_type size() const { return end()-begin(); }
size_type max_size() const { return size_type(-1) / sizeof(T); }
/// capacity - Return the total number of elements in the currently allocated
/// buffer.
size_t capacity() const { return capacity_ptr() - begin(); }
/// capacity - Return the total number of elements in the currently allocated
/// buffer.
size_t capacity() const { return capacity_ptr() - begin(); }
/// data - Return a pointer to the vector's buffer, even if empty().
pointer data() { return pointer(begin()); }
/// data - Return a pointer to the vector's buffer, even if empty().
const_pointer data() const { return const_pointer(begin()); }
/// data - Return a pointer to the vector's buffer, even if empty().
pointer data() { return pointer(begin()); }
/// data - Return a pointer to the vector's buffer, even if empty().
const_pointer data() const { return const_pointer(begin()); }
/// SmallVectorTemplateBase<isPodLike = false> - This is where we put method
/// implementations that are designed to work with non-POD-like T's.
template <typename T, bool isPodLike>
/// SmallVectorTemplateBase<isPodLike = false> - This is where we put method
/// implementations that are designed to work with non-POD-like T's.
template <typename T, bool isPodLike>
/// uninitialized_copy - Copy the range [I, E) onto the uninitialized memory
/// starting with "Dest", constructing elements into it as needed.
template<typename It1, typename It2>
static void uninitialized_copy(It1 I, It1 E, It2 Dest) {
std::uninitialized_copy(I, E, Dest);
}
/// uninitialized_copy - Copy the range [I, E) onto the uninitialized memory
/// starting with "Dest", constructing elements into it as needed.
template<typename It1, typename It2>
static void uninitialized_copy(It1 I, It1 E, It2 Dest) {
std::uninitialized_copy(I, E, Dest);
}
/// grow - double the size of the allocated memory, guaranteeing space for at
/// least one more element or MinSize if specified.
void grow(size_t MinSize = 0);
/// grow - double the size of the allocated memory, guaranteeing space for at
/// least one more element or MinSize if specified.
void grow(size_t MinSize = 0);
// Copy the elements over.
this->uninitialized_copy(this->begin(), this->end(), NewElts);
// Copy the elements over.
this->uninitialized_copy(this->begin(), this->end(), NewElts);
// Destroy the original elements.
destroy_range(this->begin(), this->end());
// Destroy the original elements.
destroy_range(this->begin(), this->end());
/// SmallVectorTemplateBase<isPodLike = true> - This is where we put method
/// implementations that are designed to work with POD-like T's.
template <typename T>
class SmallVectorTemplateBase<T, true> : public SmallVectorTemplateCommon<T> {
public:
SmallVectorTemplateBase(size_t Size) : SmallVectorTemplateCommon<T>(Size) {}
/// SmallVectorTemplateBase<isPodLike = true> - This is where we put method
/// implementations that are designed to work with POD-like T's.
template <typename T>
class SmallVectorTemplateBase<T, true> : public SmallVectorTemplateCommon<T> {
public:
SmallVectorTemplateBase(size_t Size) : SmallVectorTemplateCommon<T>(Size) {}
// No need to do a destroy loop for POD's.
static void destroy_range(T *, T *) {}
// No need to do a destroy loop for POD's.
static void destroy_range(T *, T *) {}
/// uninitialized_copy - Copy the range [I, E) onto the uninitialized memory
/// starting with "Dest", constructing elements into it as needed.
template<typename It1, typename It2>
/// uninitialized_copy - Copy the range [I, E) onto the uninitialized memory
/// starting with "Dest", constructing elements into it as needed.
template<typename It1, typename It2>
/// SmallVectorImpl - This class consists of common code factored out of the
/// SmallVector class to reduce code duplication based on the SmallVector 'N'
/// template parameter.
template <typename T>
class SmallVectorImpl : public SmallVectorTemplateBase<T, isPodLike<T>::value> {
typedef SmallVectorTemplateBase<T, isPodLike<T>::value > SuperClass;
/// SmallVectorImpl - This class consists of common code factored out of the
/// SmallVector class to reduce code duplication based on the SmallVector 'N'
/// template parameter.
template <typename T>
class SmallVectorImpl : public SmallVectorTemplateBase<T, isPodLike<T>::value> {
typedef SmallVectorTemplateBase<T, isPodLike<T>::value > SuperClass;
// Default ctor - Initialize to empty.
explicit SmallVectorImpl(unsigned N)
: SmallVectorTemplateBase<T, isPodLike<T>::value>(N*sizeof(T)) {
}
// Default ctor - Initialize to empty.
explicit SmallVectorImpl(unsigned N)
: SmallVectorTemplateBase<T, isPodLike<T>::value>(N*sizeof(T)) {
}
~SmallVectorImpl() {
// Destroy the constructed elements in the vector.
this->destroy_range(this->begin(), this->end());
~SmallVectorImpl() {
// Destroy the constructed elements in the vector.
this->destroy_range(this->begin(), this->end());
void clear() {
this->destroy_range(this->begin(), this->end());
this->EndX = this->BeginX;
void clear() {
this->destroy_range(this->begin(), this->end());
this->EndX = this->BeginX;
// Grow allocated space if needed.
if (NumInputs > size_type(this->capacity_ptr()-this->end()))
this->grow(this->size()+NumInputs);
// Grow allocated space if needed.
if (NumInputs > size_type(this->capacity_ptr()-this->end()))
this->grow(this->size()+NumInputs);
// Copy the new elements over.
// TODO: NEED To compile time dispatch on whether in_iter is a random access
// iterator to use the fast uninitialized_copy.
std::uninitialized_copy(in_start, in_end, this->end());
this->setEnd(this->end() + NumInputs);
}
// Copy the new elements over.
// TODO: NEED To compile time dispatch on whether in_iter is a random access
// iterator to use the fast uninitialized_copy.
std::uninitialized_copy(in_start, in_end, this->end());
this->setEnd(this->end() + NumInputs);
}
/// append - Add the specified range to the end of the SmallVector.
///
void append(size_type NumInputs, const T &Elt) {
// Grow allocated space if needed.
if (NumInputs > size_type(this->capacity_ptr()-this->end()))
this->grow(this->size()+NumInputs);
/// append - Add the specified range to the end of the SmallVector.
///
void append(size_type NumInputs, const T &Elt) {
// Grow allocated space if needed.
if (NumInputs > size_type(this->capacity_ptr()-this->end()))
this->grow(this->size()+NumInputs);
// Copy the new elements over.
std::uninitialized_fill_n(this->end(), NumInputs, Elt);
this->setEnd(this->end() + NumInputs);
}
// Copy the new elements over.
std::uninitialized_fill_n(this->end(), NumInputs, Elt);
this->setEnd(this->end() + NumInputs);
}
void assign(unsigned NumElts, const T &Elt) {
clear();
if (this->capacity() < NumElts)
void assign(unsigned NumElts, const T &Elt) {
clear();
if (this->capacity() < NumElts)
this->setEnd(this->begin()+NumElts);
construct_range(this->begin(), this->end(), Elt);
}
this->setEnd(this->begin()+NumElts);
construct_range(this->begin(), this->end(), Elt);
}
iterator insert(iterator I, const T &Elt) {
if (I == this->end()) { // Important special case for empty vector.
push_back(Elt);
return this->end()-1;
}
iterator insert(iterator I, const T &Elt) {
if (I == this->end()) { // Important special case for empty vector.
push_back(Elt);
return this->end()-1;
}
iterator insert(iterator I, size_type NumToInsert, const T &Elt) {
if (I == this->end()) { // Important special case for empty vector.
append(NumToInsert, Elt);
return this->end()-1;
}
iterator insert(iterator I, size_type NumToInsert, const T &Elt) {
if (I == this->end()) { // Important special case for empty vector.
append(NumToInsert, Elt);
return this->end()-1;
}
// Convert iterator to elt# to avoid invalidating iterator when we reserve()
size_t InsertElt = I - this->begin();
// Convert iterator to elt# to avoid invalidating iterator when we reserve()
size_t InsertElt = I - this->begin();
// If there are more elements between the insertion point and the end of the
// range than there are being inserted, we can use a simple approach to
// insertion. Since we already reserved space, we know that this won't
// If there are more elements between the insertion point and the end of the
// range than there are being inserted, we can use a simple approach to
// insertion. Since we already reserved space, we know that this won't
if (size_t(this->end()-I) >= NumToInsert) {
T *OldEnd = this->end();
append(this->end()-NumToInsert, this->end());
if (size_t(this->end()-I) >= NumToInsert) {
T *OldEnd = this->end();
append(this->end()-NumToInsert, this->end());
// Copy the existing elements that get replaced.
std::copy_backward(I, OldEnd-NumToInsert, OldEnd);
// Copy the existing elements that get replaced.
std::copy_backward(I, OldEnd-NumToInsert, OldEnd);
// Otherwise, we're inserting more elements than exist already, and we're
// not inserting at the end.
// Otherwise, we're inserting more elements than exist already, and we're
// not inserting at the end.
// Copy over the elements that we're about to overwrite.
T *OldEnd = this->end();
this->setEnd(this->end() + NumToInsert);
size_t NumOverwritten = OldEnd-I;
this->uninitialized_copy(I, OldEnd, this->end()-NumOverwritten);
// Copy over the elements that we're about to overwrite.
T *OldEnd = this->end();
this->setEnd(this->end() + NumToInsert);
size_t NumOverwritten = OldEnd-I;
this->uninitialized_copy(I, OldEnd, this->end()-NumOverwritten);
// Replace the overwritten part.
std::fill_n(I, NumOverwritten, Elt);
// Replace the overwritten part.
std::fill_n(I, NumOverwritten, Elt);
// Insert the non-overwritten middle part.
std::uninitialized_fill_n(OldEnd, NumToInsert-NumOverwritten, Elt);
return I;
}
// Insert the non-overwritten middle part.
std::uninitialized_fill_n(OldEnd, NumToInsert-NumOverwritten, Elt);
return I;
}
template<typename ItTy>
iterator insert(iterator I, ItTy From, ItTy To) {
if (I == this->end()) { // Important special case for empty vector.
append(From, To);
return this->end()-1;
}
template<typename ItTy>
iterator insert(iterator I, ItTy From, ItTy To) {
if (I == this->end()) { // Important special case for empty vector.
append(From, To);
return this->end()-1;
}
size_t NumToInsert = std::distance(From, To);
// Convert iterator to elt# to avoid invalidating iterator when we reserve()
size_t InsertElt = I - this->begin();
size_t NumToInsert = std::distance(From, To);
// Convert iterator to elt# to avoid invalidating iterator when we reserve()
size_t InsertElt = I - this->begin();
// If there are more elements between the insertion point and the end of the
// range than there are being inserted, we can use a simple approach to
// insertion. Since we already reserved space, we know that this won't
// If there are more elements between the insertion point and the end of the
// range than there are being inserted, we can use a simple approach to
// insertion. Since we already reserved space, we know that this won't
if (size_t(this->end()-I) >= NumToInsert) {
T *OldEnd = this->end();
append(this->end()-NumToInsert, this->end());
if (size_t(this->end()-I) >= NumToInsert) {
T *OldEnd = this->end();
append(this->end()-NumToInsert, this->end());
// Copy the existing elements that get replaced.
std::copy_backward(I, OldEnd-NumToInsert, OldEnd);
// Copy the existing elements that get replaced.
std::copy_backward(I, OldEnd-NumToInsert, OldEnd);
// Otherwise, we're inserting more elements than exist already, and we're
// not inserting at the end.
// Otherwise, we're inserting more elements than exist already, and we're
// not inserting at the end.
// Copy over the elements that we're about to overwrite.
T *OldEnd = this->end();
this->setEnd(this->end() + NumToInsert);
size_t NumOverwritten = OldEnd-I;
this->uninitialized_copy(I, OldEnd, this->end()-NumOverwritten);
// Copy over the elements that we're about to overwrite.
T *OldEnd = this->end();
this->setEnd(this->end() + NumToInsert);
size_t NumOverwritten = OldEnd-I;
this->uninitialized_copy(I, OldEnd, this->end()-NumOverwritten);
// Insert the non-overwritten middle part.
this->uninitialized_copy(From, To, OldEnd);
return I;
}
// Insert the non-overwritten middle part.
this->uninitialized_copy(From, To, OldEnd);
return I;
}
bool operator==(const SmallVectorImpl &RHS) const {
if (this->size() != RHS.size()) return false;
return std::equal(this->begin(), this->end(), RHS.begin());
bool operator==(const SmallVectorImpl &RHS) const {
if (this->size() != RHS.size()) return false;
return std::equal(this->begin(), this->end(), RHS.begin());
bool operator<(const SmallVectorImpl &RHS) const {
return std::lexicographical_compare(this->begin(), this->end(),
RHS.begin(), RHS.end());
}
bool operator<(const SmallVectorImpl &RHS) const {
return std::lexicographical_compare(this->begin(), this->end(),
RHS.begin(), RHS.end());
}