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// file : tests/small-forward-list/driver.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#ifndef __cpp_lib_modules_ts
#include <string>
#include <iostream>
#endif
// Other includes.
#ifdef __cpp_modules_ts
#ifdef __cpp_lib_modules_ts
import std.core;
import std.io;
#endif
import butl.small_forward_list;
#else
#include <libbutl/small-forward-list.mxx>
#endif
#undef NDEBUG
#include <cassert>
using namespace std;
using namespace butl;
// Return true if the data is stored entirely inside l.
//
template <typename T, size_t N>
inline bool
small (const small_forward_list<T, N>& l)
{
for (const T& x: l)
{
const void* p (&x);
if (p < &l || p >= (&l + 1))
return false;
}
return true;
}
template <typename T, size_t N>
inline const T&
front (const small_forward_list<T, N>& l)
{
return l.front ();
}
template <typename T, size_t N>
inline const T&
back (const small_forward_list<T, N>& l)
{
auto i (l.begin ());;
for (auto j (i); ++j != l.end (); ) i = j;
return *i;
}
int
main ()
{
using list = small_forward_list<string, 1>;
{
list l;
l.push_front ("abc");
assert (front (l) == "abc" && small (l));
l.push_front ("ABC");
assert (front (l) == "ABC" && back (l) == "abc" && !small (l));
l.pop_front ();
assert (front (l) == "abc" && small (l));
l.push_front ("ABC");
l.reverse ();
l.pop_front ();
assert (front (l) == "ABC" && !small (l));
l.push_front ("abc");
l.reverse ();
l.pop_front ();
assert (front (l) == "abc" && small (l));
l.clear ();
l.push_front ("abc");
assert (front (l) == "abc" && small (l));
}
// Copy constructor.
//
{
list s1 ({"abc"}), s2 (s1);
assert (s1 == s2 && small (s2));
list l1 ({"abc", "ABC"}), l2 (l1);
assert (l1 == l2 && !small (l2));
}
// Move constructor.
//
{
struct mstring: string // Move-only string.
{
mstring () = default;
explicit mstring (const char* s): string (s) {}
mstring (mstring&&) = default;
mstring& operator= (mstring&&) = default;
mstring (const mstring&) = delete;
mstring& operator= (const mstring&) = delete;
};
using list = small_forward_list<mstring, 1>;
{
list s1;
s1.emplace_front ("abc");
list s2 (move (s1));
assert (front (s2) == "abc" && small (s2));
}
{
list l1;
l1.emplace_front ("ABC");
l1.emplace_front ("abc");
list l2 (move (l1));
assert (front (l2) == "abc" && back (l2) == "ABC" && !small (l2));
}
}
// Other constructors.
//
{
const char* sa[] = {"abc"};
const char* la[] = {"abc", "ABC"};
list s (sa, sa + 1);
assert (front (s) == "abc" && small (s));
list l (la, la + 2);
assert (front (l) == "abc" && back (l) == "ABC" && !small (l));
}
{
list s (1, "abc");
assert (front (s) == "abc" && small (s));
list l (3, "abc");
assert (front (l) == "abc" && back (l) == "abc" && !small (l));
}
{
list s (1);
assert (s.front () == "" && small (s));
list l (3);
assert (front (l) == "" && back (l) == "" && !small (l));
}
}
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