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50 lines
1.2 KiB
C++
50 lines
1.2 KiB
C++
#ifndef PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#define PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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#if defined(_MSC_VER) || (defined(__GNUC__) && (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || (__GNUC__ >= 4)) // GCC supports "pragma once" correctly since 3.4
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#pragma once
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#endif
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#include "yaml-cpp/noncopyable.h"
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#include <cstddef>
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#include <cstdlib>
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#include <memory>
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#include <vector>
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template <typename T>
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class ptr_stack: private YAML::noncopyable
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{
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public:
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ptr_stack() {}
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~ptr_stack() { clear(); }
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void clear() {
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for(unsigned i=0;i<m_data.size();i++)
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delete m_data[i];
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m_data.clear();
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}
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std::size_t size() const { return m_data.size(); }
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bool empty() const { return m_data.empty(); }
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void push(std::auto_ptr<T> t) {
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m_data.push_back(NULL);
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m_data.back() = t.release();
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}
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std::auto_ptr<T> pop() {
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std::auto_ptr<T> t(m_data.back());
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m_data.pop_back();
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return t;
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}
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T& top() { return *m_data.back(); }
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const T& top() const { return *m_data.back(); }
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T& top(std::ptrdiff_t diff) { return **(m_data.end() - 1 + diff); }
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const T& top(std::ptrdiff_t diff) const { return **(m_data.end() - 1 + diff); }
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private:
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std::vector<T*> m_data;
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};
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#endif // PTR_STACK_H_62B23520_7C8E_11DE_8A39_0800200C9A66
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