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/* std::unique_ptr specializations for GDB.
Copyright (C) 2016-2023 Free Software Foundation, Inc.
This file is part of GDB.
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/>. */
#ifndef COMMON_GDB_UNIQUE_PTR_H
#define COMMON_GDB_UNIQUE_PTR_H
#include <memory>
#include <string>
#include "gdbsupport/gdb-xfree.h"
namespace gdb
{
/* Define gdb::unique_xmalloc_ptr, a std::unique_ptr that manages
xmalloc'ed memory. */
/* The deleter for std::unique_xmalloc_ptr. Uses xfree. */
template <typename T>
struct xfree_deleter
{
void operator() (T *ptr) const { xfree (ptr); }
};
/* Same, for arrays. */
template <typename T>
struct xfree_deleter<T[]>
{
void operator() (T *ptr) const { xfree (ptr); }
};
/* Import the standard unique_ptr to our namespace with a custom
deleter. */
template<typename T> using unique_xmalloc_ptr
= std::unique_ptr<T, xfree_deleter<T>>;
/* A no-op deleter. */
template<typename T>
struct noop_deleter
{
void operator() (T *ptr) const { }
};
} /* namespace gdb */
/* Dup STR and return a unique_xmalloc_ptr for the result. */
static inline gdb::unique_xmalloc_ptr<char>
make_unique_xstrdup (const char *str)
{
return gdb::unique_xmalloc_ptr<char> (xstrdup (str));
}
/* Dup the first N characters of STR and return a unique_xmalloc_ptr
for the result. The result is always \0-terminated. */
static inline gdb::unique_xmalloc_ptr<char>
make_unique_xstrndup (const char *str, size_t n)
{
return gdb::unique_xmalloc_ptr<char> (xstrndup (str, n));
}
/* An overload of operator+= for adding gdb::unique_xmalloc_ptr<char> to a
std::string. */
static inline std::string &
operator+= (std::string &lhs, const gdb::unique_xmalloc_ptr<char> &rhs)
{
return lhs += rhs.get ();
}
/* An overload of operator+ for adding gdb::unique_xmalloc_ptr<char> to a
std::string. */
static inline std::string
operator+ (const std::string &lhs, const gdb::unique_xmalloc_ptr<char> &rhs)
{
return lhs + rhs.get ();
}
#endif /* COMMON_GDB_UNIQUE_PTR_H */
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