#include <cstddef>
#include <cstring>
#include <iterator>
+#include <utility>
namespace llvm {
///
class SmallPtrSetImplBase {
friend class SmallPtrSetIteratorImpl;
+
protected:
/// SmallArray - Points to a fixed size set of buckets, used in 'small mode'.
const void **SmallArray;
// Helpers to copy and move construct a SmallPtrSet.
SmallPtrSetImplBase(const void **SmallStorage, const SmallPtrSetImplBase &that);
-#if LLVM_HAS_RVALUE_REFERENCES
SmallPtrSetImplBase(const void **SmallStorage, unsigned SmallSize,
SmallPtrSetImplBase &&that);
-#endif
explicit SmallPtrSetImplBase(const void **SmallStorage, unsigned SmallSize) :
SmallArray(SmallStorage), CurArray(SmallStorage), CurArraySize(SmallSize) {
assert(SmallSize && (SmallSize & (SmallSize-1)) == 0 &&
~SmallPtrSetImplBase();
public:
+ typedef unsigned size_type;
bool LLVM_ATTRIBUTE_UNUSED_RESULT empty() const { return size() == 0; }
- unsigned size() const { return NumElements; }
+ size_type size() const { return NumElements; }
void clear() {
// If the capacity of the array is huge, and the # elements used is small,
/// insert_imp - This returns true if the pointer was new to the set, false if
/// it was already in the set. This is hidden from the client so that the
/// derived class can check that the right type of pointer is passed in.
- bool insert_imp(const void * Ptr);
+ std::pair<const void *const *, bool> insert_imp(const void *Ptr);
/// erase_imp - If the set contains the specified pointer, remove it and
/// return true, otherwise return false. This is hidden from the client so
/// Grow - Allocate a larger backing store for the buckets and move it over.
void Grow(unsigned NewSize);
- void operator=(const SmallPtrSetImplBase &RHS) LLVM_DELETED_FUNCTION;
+ void operator=(const SmallPtrSetImplBase &RHS) = delete;
+
protected:
/// swap - Swaps the elements of two sets.
/// Note: This method assumes that both sets have the same small size.
void swap(SmallPtrSetImplBase &RHS);
void CopyFrom(const SmallPtrSetImplBase &RHS);
-#if LLVM_HAS_RVALUE_REFERENCES
void MoveFrom(unsigned SmallSize, SmallPtrSetImplBase &&RHS);
-#endif
};
/// SmallPtrSetIteratorImpl - This is the common base class shared between all
protected:
const void *const *Bucket;
const void *const *End;
+
public:
explicit SmallPtrSetIteratorImpl(const void *const *BP, const void*const *E)
: Bucket(BP), End(E) {
template<typename PtrTy>
class SmallPtrSetIterator : public SmallPtrSetIteratorImpl {
typedef PointerLikeTypeTraits<PtrTy> PtrTraits;
-
+
public:
typedef PtrTy value_type;
typedef PtrTy reference;
typedef PtrTy pointer;
typedef std::ptrdiff_t difference_type;
typedef std::forward_iterator_tag iterator_category;
-
+
explicit SmallPtrSetIterator(const void *const *BP, const void *const *E)
: SmallPtrSetIteratorImpl(BP, E) {}
struct RoundUpToPowerOfTwo {
enum { Val = RoundUpToPowerOfTwoH<N, (N&(N-1)) == 0>::Val };
};
-
/// \brief A templated base class for \c SmallPtrSet which provides the
/// typesafe interface that is common across all small sizes.
template <typename PtrType>
class SmallPtrSetImpl : public SmallPtrSetImplBase {
typedef PointerLikeTypeTraits<PtrType> PtrTraits;
+
+ SmallPtrSetImpl(const SmallPtrSetImpl &) = delete;
+
protected:
// Constructors that forward to the base.
SmallPtrSetImpl(const void **SmallStorage, const SmallPtrSetImpl &that)
: SmallPtrSetImplBase(SmallStorage, that) {}
-#if LLVM_HAS_RVALUE_REFERENCES
SmallPtrSetImpl(const void **SmallStorage, unsigned SmallSize,
SmallPtrSetImpl &&that)
: SmallPtrSetImplBase(SmallStorage, SmallSize, std::move(that)) {}
-#endif
explicit SmallPtrSetImpl(const void **SmallStorage, unsigned SmallSize)
: SmallPtrSetImplBase(SmallStorage, SmallSize) {}
public:
- /// insert - This returns true if the pointer was new to the set, false if it
- /// was already in the set.
- bool insert(PtrType Ptr) {
- return insert_imp(PtrTraits::getAsVoidPointer(Ptr));
+ typedef SmallPtrSetIterator<PtrType> iterator;
+ typedef SmallPtrSetIterator<PtrType> const_iterator;
+
+ /// Inserts Ptr if and only if there is no element in the container equal to
+ /// Ptr. The bool component of the returned pair is true if and only if the
+ /// insertion takes place, and the iterator component of the pair points to
+ /// the element equal to Ptr.
+ std::pair<iterator, bool> insert(PtrType Ptr) {
+ auto p = insert_imp(PtrTraits::getAsVoidPointer(Ptr));
+ return std::make_pair(iterator(p.first, CurArray + CurArraySize), p.second);
}
/// erase - If the set contains the specified pointer, remove it and return
}
/// count - Return 1 if the specified pointer is in the set, 0 otherwise.
- unsigned count(PtrType Ptr) const {
+ size_type count(PtrType Ptr) const {
return count_imp(PtrTraits::getAsVoidPointer(Ptr)) ? 1 : 0;
}
insert(*I);
}
- typedef SmallPtrSetIterator<PtrType> iterator;
- typedef SmallPtrSetIterator<PtrType> const_iterator;
inline iterator begin() const {
return iterator(CurArray, CurArray+CurArraySize);
}
enum { SmallSizePowTwo = RoundUpToPowerOfTwo<SmallSize>::Val };
/// SmallStorage - Fixed size storage used in 'small mode'.
const void *SmallStorage[SmallSizePowTwo];
+
public:
SmallPtrSet() : BaseT(SmallStorage, SmallSizePowTwo) {}
SmallPtrSet(const SmallPtrSet &that) : BaseT(SmallStorage, that) {}
-#if LLVM_HAS_RVALUE_REFERENCES
SmallPtrSet(SmallPtrSet &&that)
: BaseT(SmallStorage, SmallSizePowTwo, std::move(that)) {}
-#endif
template<typename It>
SmallPtrSet(It I, It E) : BaseT(SmallStorage, SmallSizePowTwo) {
return *this;
}
-#if LLVM_HAS_RVALUE_REFERENCES
SmallPtrSet<PtrType, SmallSize>&
operator=(SmallPtrSet<PtrType, SmallSize> &&RHS) {
if (&RHS != this)
this->MoveFrom(SmallSizePowTwo, std::move(RHS));
return *this;
}
-#endif
/// swap - Swaps the elements of two sets.
void swap(SmallPtrSet<PtrType, SmallSize> &RHS) {
SmallPtrSetImplBase::swap(RHS);
}
};
-
}
namespace std {
projects / oota-llvm.git / blobdiff