forked from OSchip/llvm-project
53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
//=== llvm/unittest/ADT/DepthFirstIteratorTest.cpp - DFS iterator tests ---===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "TestGraph.h"
|
|
#include "llvm/ADT/DepthFirstIterator.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace llvm {
|
|
|
|
template <typename T> struct CountedSet {
|
|
typedef typename SmallPtrSet<T, 4>::iterator iterator;
|
|
|
|
SmallPtrSet<T, 4> S;
|
|
int InsertVisited = 0;
|
|
|
|
std::pair<iterator, bool> insert(const T &Item) {
|
|
InsertVisited++;
|
|
return S.insert(Item);
|
|
}
|
|
|
|
size_t count(const T &Item) const { return S.count(Item); }
|
|
};
|
|
|
|
template <typename T> class df_iterator_storage<CountedSet<T>, true> {
|
|
public:
|
|
df_iterator_storage(CountedSet<T> &VSet) : Visited(VSet) {}
|
|
|
|
CountedSet<T> &Visited;
|
|
};
|
|
|
|
TEST(DepthFirstIteratorTest, ActuallyUpdateIterator) {
|
|
typedef CountedSet<Graph<3>::NodeType *> StorageT;
|
|
typedef df_iterator<Graph<3>, StorageT, true> DFIter;
|
|
|
|
Graph<3> G;
|
|
G.AddEdge(0, 1);
|
|
G.AddEdge(0, 2);
|
|
StorageT S;
|
|
for (auto N : make_range(DFIter::begin(G, S), DFIter::end(G, S)))
|
|
(void)N;
|
|
|
|
EXPECT_EQ(3, S.InsertVisited);
|
|
}
|
|
}
|