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[ADT] Teach MapVector to support a swap member. Will be used in

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a subsequent commit in Clang.

llvm-svn: 233159
This commit is contained in:
Chandler Carruth 2015-03-25 00:50:21 +00:00
parent 249b878ed5
commit 9a37e27bd2
2 changed files with 30 additions and 0 deletions
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5
include/llvm/ADT/MapVector.h
View File

@ -67,6 +67,11 @@ public:
Vector.clear();
}
void swap(MapVector &RHS) {
std::swap(Map, RHS.Map);
std::swap(Vector, RHS.Vector);
}
ValueT &operator[](const KeyT &Key) {
std::pair<KeyT, unsigned> Pair = std::make_pair(Key, 0);
std::pair<typename MapType::iterator, bool> Result = Map.insert(Pair);

25
unittests/ADT/MapVectorTest.cpp
View File

@ -14,6 +14,31 @@
using namespace llvm;
TEST(MapVectorTest, swap) {
MapVector<int, int> MV1, MV2;
std::pair<MapVector<int, int>::iterator, bool> R;
R = MV1.insert(std::make_pair(1, 2));
ASSERT_EQ(R.first, MV1.begin());
EXPECT_EQ(R.first->first, 1);
EXPECT_EQ(R.first->second, 2);
EXPECT_TRUE(R.second);
EXPECT_FALSE(MV1.empty());
EXPECT_TRUE(MV2.empty());
MV2.swap(MV1);
EXPECT_TRUE(MV1.empty());
EXPECT_FALSE(MV2.empty());
auto I = MV1.find(1);
ASSERT_EQ(MV1.end(), I);
I = MV2.find(1);
ASSERT_EQ(I, MV2.begin());
EXPECT_EQ(I->first, 1);
EXPECT_EQ(I->second, 2);
}
TEST(MapVectorTest, insert_pop) {
MapVector<int, int> MV;
std::pair<MapVector<int, int>::iterator, bool> R;