1 files changed, 46 insertions, 0 deletions
diff --git a/test/support/counting_predicates.hpp b/test/support/counting_predicates.hpp
new file mode 100644
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+++ b/test/support/counting_predicates.hpp
@@ -0,0 +1,46 @@
+//===----------------------------------------------------------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is dual licensed under the MIT and the University of Illinois Open
+// Source Licenses. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef __COUNTING_PREDICATES_H
+#define __COUNTING_PREDICATES_H
+
+
+template <typename Predicate, typename Arg>
+struct unary_counting_predicate : public std::unary_function<Arg, bool>  {
+public:
+    unary_counting_predicate(Predicate p) : p_(p), count_(0) {}
+    ~unary_counting_predicate() {}
+    
+    bool operator () (const Arg &a) const { ++count_; return p_(a); }
+    size_t count() const { return count_; }
+    void reset() { count_ = 0; }
+    
+private:
+    Predicate p_;
+    mutable size_t count_;
+    };
+
+
+template <typename Predicate, typename Arg1, typename Arg2=Arg1>
+struct binary_counting_predicate : public std::binary_function<Arg1, Arg2, bool> {
+public:
+
+    binary_counting_predicate ( Predicate p ) : p_(p), count_(0) {}
+    ~binary_counting_predicate() {}
+    
+    bool operator () (const Arg1 &a1, const Arg2 &a2) const { ++count_; return p_(a1, a2); }
+    size_t count() const { return count_; }
+    void reset() { count_ = 0; }
+
+private:
+    Predicate p_;
+    mutable size_t count_;
+    };
+
+#endif // __COUNTING_PREDICATES_H