external_libraries/yaml-cpp-0.3.0/src/ptr_stack.h

   1 #ifndef PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
   2 #define PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
   3
   4 #if defined(_MSC_VER) || (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
   5 #pragma once
   6 #endif
   7
   8 #include "yaml-cpp/noncopyable.h"
   9 #include <cstddef>
  10 #include <cstdlib>
  11 #include <memory>
  12 #include <vector>
  13
  14 template <typename T>
  15 class ptr_stack: private YAML::noncopyable
  16 {
  17 public:
  18         ptr_stack() {}
  19         ~ptr_stack() { clear(); }
  20
  21         void clear() {
  22                 for(unsigned i=0;i<m_data.size();i++)
  23                         delete m_data[i];
  24                 m_data.clear();
  25         }
  26
  27         std::size_t size() const { return m_data.size(); }
  28         bool empty() const { return m_data.empty(); }
  29
  30         void push(std::auto_ptr<T> t) {
  31                 m_data.push_back(NULL);
  32                 m_data.back() = t.release();
  33         }
  34         std::auto_ptr<T> pop() {
  35                 std::auto_ptr<T> t(m_data.back());
  36                 m_data.pop_back();
  37                 return t;
  38         }
  39         T& top() { return *m_data.back(); }
  40         const T& top() const { return *m_data.back(); }
  41
  42 private:
  43         std::vector<T*> m_data;
  44 };
  45
  46 #endif // PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66