/usr/include/wx-3.0/wx/stack.h is in wx3.0-headers 3.0.4+dfsg-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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// Name: wx/stack.h
// Purpose: STL stack clone
// Author: Lindsay Mathieson, Vadim Zeitlin
// Created: 30.07.2001
// Copyright: (c) 2001 Lindsay Mathieson <lindsay@mathieson.org> (WX_DECLARE_STACK)
// 2011 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_STACK_H_
#define _WX_STACK_H_
#include "wx/vector.h"
#if wxUSE_STD_CONTAINERS
#include <stack>
#define wxStack std::stack
#else // !wxUSE_STD_CONTAINERS
// Notice that unlike std::stack, wxStack currently always uses wxVector and
// can't be used with any other underlying container type.
//
// Another difference is that comparison operators between stacks are not
// implemented (but they should be, see 23.2.3.3 of ISO/IEC 14882:1998).
template <typename T>
class wxStack
{
public:
typedef wxVector<T> container_type;
typedef typename container_type::size_type size_type;
typedef typename container_type::value_type value_type;
wxStack() { }
explicit wxStack(const container_type& cont) : m_cont(cont) { }
// Default copy ctor, assignment operator and dtor are ok.
bool empty() const { return m_cont.empty(); }
size_type size() const { return m_cont.size(); }
value_type& top() { return m_cont.back(); }
const value_type& top() const { return m_cont.back(); }
void push(const value_type& val) { m_cont.push_back(val); }
void pop() { m_cont.pop_back(); }
private:
container_type m_cont;
};
#endif // wxUSE_STD_CONTAINERS/!wxUSE_STD_CONTAINERS
// Deprecated macro-based class for compatibility only, don't use any more.
#define WX_DECLARE_STACK(obj, cls) \
class cls : public wxVector<obj> \
{\
public:\
void push(const obj& o)\
{\
push_back(o); \
};\
\
void pop()\
{\
pop_back(); \
};\
\
obj& top()\
{\
return at(size() - 1);\
};\
const obj& top() const\
{\
return at(size() - 1); \
};\
}
#endif // _WX_STACK_H_
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