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Added iterator support for DenseSet.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@50235 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -24,15 +24,14 @@ namespace llvm {
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/// should be optimized later if there is a need.
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template<typename ValueT, typename ValueInfoT = DenseMapInfo<ValueT> >
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class DenseSet {
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DenseMap<ValueT, char, ValueInfoT> TheMap;
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typedef DenseMap<ValueT, char, ValueInfoT> MapTy;
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MapTy TheMap;
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public:
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DenseSet(const DenseSet &Other) : TheMap(Other.TheMap) {}
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explicit DenseSet(unsigned NumInitBuckets = 64) : TheMap(NumInitBuckets) {}
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bool empty() const { return TheMap.empty(); }
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unsigned size() const { return TheMap.size(); }
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// TODO add iterators.
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unsigned size() const { return TheMap.size(); }
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void clear() {
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TheMap.clear();
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@ -54,6 +53,41 @@ public:
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TheMap = RHS.TheMap;
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return *this;
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}
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// Iterators.
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class Iterator {
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typename MapTy::iterator I;
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public:
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Iterator(const typename MapTy::iterator &i) : I(i) {}
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ValueT& operator*() { return I->first; }
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ValueT* operator->() { return &I->first; }
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Iterator& operator++() { ++I; return *this; };
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bool operator==(const Iterator& X) const { return I == X.I; }
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};
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class ConstIterator {
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typename MapTy::const_iterator I;
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public:
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ConstIterator(const typename MapTy::const_iterator &i) : I(i) {}
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const ValueT& operator*() { return I->first; }
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const ValueT* operator->() { return &I->first; }
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ConstIterator& operator++() { ++I; return *this; };
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bool operator==(const ConstIterator& X) const { return I == X.I; }
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};
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typedef Iterator iterator;
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typedef ConstIterator const_iterator;
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iterator begin() { return Iterator(TheMap.begin()); }
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iterator end() { return Iterator(TheMap.end()); }
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const_iterator begin() const { return ConstIterator(TheMap.begin()); }
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const_iterator end() const { return ConstIterator(TheMap.end()); }
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};
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} // end namespace llvm
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