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Added "getRoot()" to ImmutableSet.
Made ImmutableSet::ImmutableSet(ImutAVLTree* Root) public. (this allows handy casting between trees and sets). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@46277 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -862,14 +862,17 @@ class ImmutableSet {
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public:
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typedef typename ValInfo::value_type value_type;
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typedef typename ValInfo::value_type_ref value_type_ref;
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private:
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typedef ImutAVLTree<ValInfo> TreeTy;
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private:
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TreeTy* Root;
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ImmutableSet(TreeTy* R) : Root(R) {}
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public:
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/// Constructs a set from a pointer to a tree root. In general one
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/// should use a Factory object to create sets instead of directly
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/// invoking the constructor, but there are cases where make this
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/// constructor public is useful.
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explicit ImmutableSet(TreeTy* R) : Root(R) {}
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class Factory {
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typename TreeTy::Factory F;
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@ -924,6 +927,8 @@ public:
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return Root && RHS.Root ? Root->isNotEqual(*RHS.Root) : Root != RHS.Root;
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}
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TreeTy* getRoot() const { return Root; }
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/// isEmpty - Return true if the set contains no elements.
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bool isEmpty() const { return !Root; }
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