dxx-rebirth/common/include/varutil.h

37 lines
814 B
C
Raw Normal View History

#pragma once
#define DXX_WANT_ARRAY
#include <cstddef>
#include <algorithm>
#include "dxxsconf.h"
#include "compiler.h"
template <std::size_t N>
class cstring_tie
{
void init_array(const char *s) __attribute_nonnull()
{
p[m_count++] = s;
}
template <typename... Args>
void init_array(const char *s, Args&&... args)
{
init_array(s);
init_array(std::forward<Args>(args)...);
}
public:
template <typename... Args>
cstring_tie(Args&&... args) : m_count(0)
{
static_assert(sizeof...(Args) <= maximum_arity, "too many arguments to cstring_tie");
init_array(std::forward<Args>(args)...);
}
unsigned count() const { return m_count; }
const char *string(std::size_t i) const { return p[i]; }
enum { maximum_arity = N };
private:
array<const char *, maximum_arity> p;
unsigned m_count;
};