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implement a proper copy ctor, operator= and add a helper method.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@20690 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2005-03-19 19:26:14 +00:00
parent efd02c750f
commit 4a6d9cf122
1 changed files with 24 additions and 0 deletions
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24
include/llvm/ADT/EquivalenceClasses.h
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@ -112,6 +112,19 @@ class EquivalenceClasses {
std::set<ECValue> TheMapping;
public:
EquivalenceClasses() {}
EquivalenceClasses(const EquivalenceClasses &RHS) {
operator=(RHS);
}
const EquivalenceClasses &operator=(const EquivalenceClasses &RHS) {
for (iterator I = RHS.begin(), E = RHS.end(); I != E; ++I)
if (I->isLeader())
insert(I->getData());
else
unionSets(I->getData(), *RHS.findLeader(I));
return *this;
}
//===--------------------------------------------------------------------===//
// Inspection methods
@ -133,6 +146,17 @@ public:
return member_iterator(0);
}
/// getNumClasses - Return the number of equivalence classes in this set.
/// Note that this is a linear time operation.
unsigned getNumClasses() const {
unsigned NC = 0;
for (iterator I = begin(), E = end(); I != E; ++I)
if (I->isLeader()) ++NC;
return NC;
}
//===--------------------------------------------------------------------===//
// Mutation methods