stack.hpp

#ifndef STACK_HPP
# define STACK_HPP

# include "vector.hpp"

namespace ft
{
	template <class T, 
				class Container = ft::vector<T> >
	class stack 
	{
	public:
		typedef typename Container::value_type value_type;
		typedef typename Container::size_type size_type;
		typedef Container container_type;
	protected:
		Container c;
	public:
		explicit stack(const Container& c = Container()): c(c) {}
		bool empty() const { return c.empty(); }
		size_type size() const {return c.size(); }
		value_type& top() {	return c.back(); }
		const value_type& top() const {	return c.back(); }
		void push(const value_type& x) { c.push_back(x); }
		void pop() { c.pop_back(); }

		friend bool operator==(const stack<T, Container>& x, const stack<T, Container>& y)
		{
			return x.c == y.c;
		}

		friend bool operator< (const stack<T, Container>& x, const stack<T, Container>& y)
		{
			return x.c < y.c;
		}

		friend bool operator!=(const stack<T, Container>& x, const stack<T, Container>& y)
		{
			return x.c != y.c;			
		}

		friend bool operator> (const stack<T, Container>& x, const stack<T, Container>& y)
		{
			return x.c > y.c;
		}

		friend bool operator>=(const stack<T, Container>& x, const stack<T, Container>& y)
		{
			return x.c >= y.c;
		}

		friend bool operator<=(const stack<T, Container>& x, const stack<T, Container>& y)
		{
			return x.c <= y.c;
		}
	};
}

#endif