Merged r366:387 from the jbeder-event-api branch

src/ptr_stack.h

@@ -0,0 +1,41 @@
+#pragma once
+
+#ifndef PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+#define PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
+
+#include "noncopyable.h"
+#include <memory>
+#include <vector>
+
+template <typename T>
+class ptr_stack: private YAML::noncopyable
+{
+public:
+	ptr_stack() {}
+	~ptr_stack() { clear(); }
+	
+	void clear() {
+		for(unsigned i=0;i<m_data.size();i++)
+			delete m_data[i];
+		m_data.clear();
+	}
+	
+	std::size_t size() const { return m_data.size(); }
+	bool empty() const { return m_data.empty(); }
+	
+	void push(std::auto_ptr<T> t) {
+		m_data.push_back(NULL);
+		m_data.back() = t.release();
+	}
+	std::auto_ptr<T> pop() {
+		std::auto_ptr<T> t(m_data.back());
+		m_data.pop_back();
+		return t;
+	}
+	T& top() { return *m_data.back(); }
+	
+private:
+	std::vector<T*> m_data;
+};
+
+#endif // PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66