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#pragma once
// dumb_ptr.hpp - temporary new/delete wrappers
//
// Copyright © 2013 Ben Longbons <b.r.longbons@gmail.com>
//
// This file is part of The Mana World (Athena server)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
#include "fwd.hpp"
#include <cstring>
#include <algorithm>
#include <utility>
#include "../strings/astring.hpp"
#include "../strings/zstring.hpp"
#include "../strings/xstring.hpp"
namespace tmwa
{
// unmanaged new/delete-able pointer
// should be replaced by std::unique_ptr<T>
template<class T>
class dumb_ptr
{
template<class U>
friend class dumb_ptr;
T *impl;
public:
explicit
dumb_ptr(T *p=nullptr) noexcept
: impl(p)
{}
template<class U>
dumb_ptr(dumb_ptr<U> p)
: impl(p.impl)
{}
dumb_ptr(std::nullptr_t)
: impl(nullptr)
{}
void delete_()
{
delete impl;
*this = nullptr;
}
template<class... A>
void new_(A&&... a)
{
impl = new T(std::forward<A>(a)...);
}
template<class... A>
static
dumb_ptr<T> make(A&&... a)
{
return dumb_ptr<T>(new T(std::forward<A>(a)...));
}
dumb_ptr& operator = (std::nullptr_t)
{
impl = nullptr;
return *this;
}
T& operator *() const
{
return *impl;
}
T *operator->() const
{
return impl;
}
explicit
operator bool() const
{
return impl;
}
bool operator !() const
{
return !impl;
}
friend bool operator == (dumb_ptr l, dumb_ptr r)
{
return l.impl == r.impl;
}
friend bool operator != (dumb_ptr l, dumb_ptr r)
{
return !(l == r);
}
};
// unmanaged new/delete-able pointer
// should be replaced by std::unique_ptr<T[]> or std::vector<T>
template<class T>
class dumb_ptr<T[]>
{
T *impl;
size_t sz;
public:
dumb_ptr() noexcept : impl(), sz() {}
dumb_ptr(std::nullptr_t)
: impl(nullptr), sz(0) {}
dumb_ptr(T *p, size_t z)
: impl(p)
, sz(z)
{}
void delete_()
{
delete[] impl;
*this = nullptr;
}
void new_(size_t z)
{
impl = new T[z]();
sz = z;
}
static
dumb_ptr<T[]> make(size_t z)
{
return dumb_ptr<T[]>(new T[z](), z);
}
dumb_ptr& operator = (std::nullptr_t)
{
impl = nullptr;
sz = 0;
return *this;
}
size_t size() const
{
return sz;
}
void resize(size_t z)
{
if (z == sz)
return;
T *np = new T[z]();
// not exception-safe, but we don't have a dtor anyway
size_t i = std::min(z, sz);
while (i-->0)
np[i] = std::move(impl[i]);
delete[] impl;
impl = np;
sz = z;
}
T& operator[](size_t i) const
{
return impl[i];
}
explicit
operator bool() const
{
return impl;
}
bool operator !() const
{
return !impl;
}
friend bool operator == (dumb_ptr l, dumb_ptr r)
{
return l.impl == r.impl;
}
friend bool operator != (dumb_ptr l, dumb_ptr r)
{
return !(l == r);
}
};
struct dumb_string
{
dumb_ptr<char[]> impl;
dumb_string()
: impl()
{}
dumb_string(char *) = delete;
// copy ctor, copy assign, and dtor are all default
static dumb_string copy(const char *b, const char *e)
{
dumb_string rv;
rv.impl.new_((e - b) + 1);
std::copy(b, e, &rv.impl[0]);
return rv;
}
static dumb_string copys(XString s)
{
return dumb_string::copy(&*s.begin(), &*s.end());
}
static
#ifndef __clang__
__attribute__((warning("shouldn't use this - slice instead")))
#endif
dumb_string copyn(const char *sn, size_t n)
{
return dumb_string::copy(sn, sn + strnlen(sn, n));
}
dumb_string dup() const
{
return dumb_string::copy(&impl[0], &impl[0] + impl.size());
}
void delete_()
{
impl.delete_();
}
const char *c_str() const
{
return &impl[0];
}
operator ZString() const
{
return ZString(strings::really_construct_from_a_pointer, c_str(), nullptr);
}
AString str() const
{
return ZString(*this);
}
char& operator[](size_t i) const
{
return impl[i];
}
explicit
operator bool() const
{
return bool(impl);
}
bool operator !() const
{
return !impl;
}
};
inline
const char *convert_for_printf(dumb_string ds)
{
return ds.c_str();
}
} // namespace tmwa
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