intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 43 insertions, 0 deletions

diff --git a/contrib/libs/yaml-cpp/src/ptr_vector.h b/contrib/libs/yaml-cpp/src/ptr_vector.h
new file mode 100644
index 0000000000..955aebd8d5
--- /dev/null
+++ b/contrib/libs/yaml-cpp/src/ptr_vector.h
@@ -0,0 +1,43 @@
+#ifndef PTR_VECTOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define PTR_VECTOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#if defined(_MSC_VER) ||                                            \
+    (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || \
+     (__GNUC__ >= 4))  // GCC supports "pragma once" correctly since 3.4
+#pragma once
+#endif
+
+#include <cstddef>
+#include <cstdlib>
+#include <memory>
+#include <vector>
+
+#include "yaml-cpp/noncopyable.h"
+
+namespace YAML {
+
+// TODO: This class is no longer needed
+template <typename T>
+class ptr_vector : private YAML::noncopyable {
+ public:
+  ptr_vector() {}
+
+  void clear() { m_data.clear(); }
+
+  std::size_t size() const { return m_data.size(); }
+  bool empty() const { return m_data.empty(); }
+
+  void push_back(std::unique_ptr<T>&& t) { m_data.push_back(std::move(t)); }
+  T& operator[](std::size_t i) { return *m_data[i]; }
+  const T& operator[](std::size_t i) const { return *m_data[i]; }
+
+  T& back() { return *(m_data.back().get()); }
+
+  const T& back() const { return *(m_data.back().get()); }
+
+ private:
+  std::vector<std::unique_ptr<T>> m_data;
+};
+}
+
+#endif  // PTR_VECTOR_H_62B23520_7C8E_11DE_8A39_0800200C9A66