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make the SmallSet interface more std::set-like

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@33458 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Chris Lattner 2007-01-23 01:16:19 +00:00
parent 08a4d5a343
commit 182907645c
1 changed files with 13 additions and 6 deletions
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19
include/llvm/ADT/SmallSet.h
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@ -41,19 +41,26 @@ public:
bool empty() const { return Vector.empty(); }
unsigned size() const { return Vector.size(); }
iterator find(const T &V) const {
for (iterator I = begin(), E = end(); I != E; ++I)
if (*I == V)
return I;
return end();
}
/// count - Return true if the element is in the set.
unsigned count(const T &V) const {
// Since the collection is small, just do a linear search.
for (iterator I = begin(), E = end(); I != E; ++I)
if (*I == V)
return 1;
return 0;
return find(V) != end();
}
/// insert - Insert an element into the set if it isn't already there.
void insert(const T &V) {
if (count(V)) return; // Don't reinsert if it already exists.
std::pair<iterator,bool> insert(const T &V) {
iterator I = find(V);
if (I == end()) // Don't reinsert if it already exists.
return std::make_pair(I, false);
Vector.push_back(V);
return std::make_pair(end()-1, true);
}
void erase(const T &V) {