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// -*- C++ -*-
// Copyright (C) 2005 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library 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 2, or (at your option)
// any later version.
// This library 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 library; see the file COPYING. If not, write to the Free
// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// USA.
// As a special exception, you may use this file as part of a free software
// library without restriction. Specifically, if other files instantiate
// templates or use macros or inline functions from this file, or you compile
// this file and link it with other files to produce an executable, this
// file does not by itself cause the resulting executable to be covered by
// the GNU General Public License. This exception does not however
// invalidate any other reasons why the executable file might be covered by
// the GNU General Public License.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice and
// this permission notice appear in supporting documentation. None of
// the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied warranty.
/**
* @file ranged_probe_fn.hpp
* Contains a unified ranged probe functor, allowing the probe tables to deal with
* a single class for ranged probeing.
*/
#ifndef RANGED_PROBE_FN_HPP
#define RANGED_PROBE_FN_HPP
#include <ext/pb_assoc/hash_policy.hpp>
#include <utility>
namespace pb_assoc
{
namespace detail
{
#ifdef PB_ASSOC_RANGED_PROBE_FN_DEBUG
#define PB_ASSOC_DBG_ASSERT(X) assert(X)
#define PB_ASSOC_DBG_VERIFY(X) assert(X)
#define PB_ASSOC_DBG_ONLY(X) X
#else // #ifdef PB_ASSOC_RANGED_PROBE_FN_DEBUG
#define PB_ASSOC_DBG_ASSERT(X)
#define PB_ASSOC_DBG_VERIFY(X) {if((X)==0);}
#define PB_ASSOC_DBG_ONLY(X) ;
#endif // #ifdef PB_ASSOC_RANGED_PROBE_FN_DEBUG
template<typename Key,
class Hash_Fn,
class Allocator,
class Comb_Probe_Fn,
class Probe_Fn,
bool Store_Hash>
class ranged_probe_fn;
#define PB_ASSOC_CLASS_T_DEC \
template< \
typename Key, \
class Hash_Fn, \
class Allocator, \
class Comb_Probe_Fn, \
class Probe_Fn>
#define PB_ASSOC_CLASS_C_DEC \
ranged_probe_fn< \
Key, \
Hash_Fn, \
Allocator, \
Comb_Probe_Fn, \
Probe_Fn, \
false>
/**
* Specialization 1- The client supplies a probe function and a ranged
* probe function, and requests that hash values not be stored.
**/
template<typename Key,
class Hash_Fn,
class Allocator,
class Comb_Probe_Fn,
class Probe_Fn>
class ranged_probe_fn<
Key,
Hash_Fn,
Allocator,
Comb_Probe_Fn,
Probe_Fn,
false> : public Hash_Fn,
public Comb_Probe_Fn,
public Probe_Fn
{
protected:
typedef typename Allocator::size_type size_type;
typedef Comb_Probe_Fn my_comb_probe_fn_base;
typedef Hash_Fn my_hash_fn_base;
typedef Probe_Fn my_probe_fn_base;
typedef typename Allocator::template rebind< Key>::other key_allocator;
typedef typename key_allocator::const_reference const_key_reference;
protected:
ranged_probe_fn(size_type size);
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn);
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn);
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn, const Probe_Fn& r_probe_fn);
void
swap(PB_ASSOC_CLASS_C_DEC& r_other);
void
notify_resized(size_type size);
inline size_type
operator()(const_key_reference r_key) const;
inline size_type
operator()(const_key_reference r_key, size_type hash, size_type i) const;
};
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size)
{
Comb_Probe_Fn::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn) :
Hash_Fn(r_hash_fn)
{
Comb_Probe_Fn::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn) :
Hash_Fn(r_hash_fn),
Comb_Probe_Fn(r_comb_probe_fn)
{
my_comb_probe_fn_base::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn, const Probe_Fn& r_probe_fn) :
Hash_Fn(r_hash_fn),
Comb_Probe_Fn(r_comb_probe_fn),
Probe_Fn(r_probe_fn)
{
my_comb_probe_fn_base::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
swap(PB_ASSOC_CLASS_C_DEC& r_other)
{
my_comb_probe_fn_base::swap(r_other);
std::swap((Hash_Fn& )(*this), (Hash_Fn& )r_other);
}
PB_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
notify_resized(size_type size)
{
my_comb_probe_fn_base::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
inline typename PB_ASSOC_CLASS_C_DEC::size_type
PB_ASSOC_CLASS_C_DEC::
operator()(const_key_reference r_key) const
{
return (my_comb_probe_fn_base::operator()(
my_hash_fn_base::operator()(r_key)));
}
PB_ASSOC_CLASS_T_DEC
inline typename PB_ASSOC_CLASS_C_DEC::size_type
PB_ASSOC_CLASS_C_DEC::
operator()(const_key_reference r_key, size_type hash, size_type i) const
{
return (my_comb_probe_fn_base::operator()(
hash + my_probe_fn_base::operator()(r_key, i)));
}
#undef PB_ASSOC_CLASS_T_DEC
#undef PB_ASSOC_CLASS_C_DEC
#define PB_ASSOC_CLASS_T_DEC \
template< \
typename Key, \
class Hash_Fn, \
class Allocator, \
class Comb_Probe_Fn, \
class Probe_Fn>
#define PB_ASSOC_CLASS_C_DEC \
ranged_probe_fn< \
Key, \
Hash_Fn, \
Allocator, \
Comb_Probe_Fn, \
Probe_Fn, \
true>
/**
* Specialization 2- The client supplies a probe function and a ranged
* probe function, and requests that hash values be stored.
**/
template<typename Key,
class Hash_Fn,
class Allocator,
class Comb_Probe_Fn,
class Probe_Fn>
class ranged_probe_fn<
Key,
Hash_Fn,
Allocator,
Comb_Probe_Fn,
Probe_Fn,
true> :
public Hash_Fn,
public Comb_Probe_Fn,
public Probe_Fn
{
protected:
typedef typename Allocator::size_type size_type;
typedef std::pair<size_type, size_type> comp_hash;
typedef Comb_Probe_Fn my_comb_probe_fn_base;
typedef Hash_Fn my_hash_fn_base;
typedef Probe_Fn my_probe_fn_base;
typedef typename Allocator::template rebind<Key>::other key_allocator;
typedef typename key_allocator::const_reference const_key_reference;
protected:
ranged_probe_fn(size_type size);
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn);
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn);
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn, const Probe_Fn& r_probe_fn);
void
swap(PB_ASSOC_CLASS_C_DEC& r_other);
void
notify_resized(size_type size);
inline comp_hash
operator()(const_key_reference r_key) const;
inline size_type
operator()(const_key_reference r_key, size_type hash, size_type i) const;
inline size_type
operator()(const_key_reference r_key, size_type hash) const;
};
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size)
{
Comb_Probe_Fn::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn) :
Hash_Fn(r_hash_fn)
{
Comb_Probe_Fn::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn) :
Hash_Fn(r_hash_fn),
Comb_Probe_Fn(r_comb_probe_fn)
{
my_comb_probe_fn_base::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size, const Hash_Fn& r_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn, const Probe_Fn& r_probe_fn) :
Hash_Fn(r_hash_fn),
Comb_Probe_Fn(r_comb_probe_fn),
Probe_Fn(r_probe_fn)
{
my_comb_probe_fn_base::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
swap(PB_ASSOC_CLASS_C_DEC& r_other)
{
my_comb_probe_fn_base::swap(r_other);
std::swap((Hash_Fn& )(*this), (Hash_Fn& )r_other);
}
PB_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
notify_resized(size_type size)
{
my_comb_probe_fn_base::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
inline typename PB_ASSOC_CLASS_C_DEC::comp_hash
PB_ASSOC_CLASS_C_DEC::
operator()(const_key_reference r_key) const
{
const size_type hash = my_hash_fn_base::operator()(r_key);
return (std::make_pair(my_comb_probe_fn_base::operator()(hash), hash));
}
PB_ASSOC_CLASS_T_DEC
inline typename PB_ASSOC_CLASS_C_DEC::size_type
PB_ASSOC_CLASS_C_DEC::
operator()(const_key_reference r_key, size_type hash, size_type i) const
{
return (my_comb_probe_fn_base::operator()(
hash + my_probe_fn_base::operator()(r_key, i)));
}
PB_ASSOC_CLASS_T_DEC
inline typename PB_ASSOC_CLASS_C_DEC::size_type
PB_ASSOC_CLASS_C_DEC::
operator()
#ifdef PB_ASSOC_RANGED_PROBE_FN_DEBUG
(const_key_reference r_key, size_type hash) const
#else // #ifdef PB_ASSOC_RANGED_PROBE_FN_DEBUG
(const_key_reference /*r_key*/, size_type hash) const
#endif // #ifdef PB_ASSOC_RANGED_PROBE_FN_DEBUG
{
PB_ASSOC_DBG_ASSERT(hash == my_hash_fn_base::operator()(r_key));
return (hash);
}
#undef PB_ASSOC_CLASS_T_DEC
#undef PB_ASSOC_CLASS_C_DEC
#define PB_ASSOC_CLASS_T_DEC \
template<typename Key, class Allocator, class Comb_Probe_Fn>
#define PB_ASSOC_CLASS_C_DEC \
ranged_probe_fn< \
Key, \
null_hash_fn, \
Allocator, \
Comb_Probe_Fn, \
null_probe_fn, \
false>
/**
* Specialization 3 and 4- The client does not supply a hash function or
* probe function, and requests that hash values not be stored.
**/
template<typename Key, class Allocator, class Comb_Probe_Fn>
class ranged_probe_fn<
Key,
null_hash_fn,
Allocator,
Comb_Probe_Fn,
null_probe_fn,
false> :
public Comb_Probe_Fn,
public null_hash_fn,
public null_probe_fn
{
protected:
typedef typename Allocator::size_type size_type;
typedef Comb_Probe_Fn my_comb_probe_fn_base;
typedef typename Allocator::template rebind<Key>::other key_allocator;
typedef typename key_allocator::const_reference const_key_reference;
protected:
ranged_probe_fn(size_type size);
ranged_probe_fn(size_type size, const Comb_Probe_Fn& r_comb_probe_fn);
ranged_probe_fn(size_type size, const null_hash_fn& r_null_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn, const null_probe_fn& r_null_probe_fn);
void
swap(PB_ASSOC_CLASS_C_DEC& r_other);
};
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size)
{
Comb_Probe_Fn::notify_resized(size);
}
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size, const Comb_Probe_Fn& r_comb_probe_fn) :
Comb_Probe_Fn(r_comb_probe_fn)
{ }
PB_ASSOC_CLASS_T_DEC
PB_ASSOC_CLASS_C_DEC::
ranged_probe_fn(size_type size, const null_hash_fn& r_null_hash_fn, const Comb_Probe_Fn& r_comb_probe_fn, const null_probe_fn& r_null_probe_fn) :
Comb_Probe_Fn(r_comb_probe_fn)
{ }
PB_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
swap(PB_ASSOC_CLASS_C_DEC& r_other)
{
my_comb_probe_fn_base::swap(r_other);
}
#undef PB_ASSOC_CLASS_T_DEC
#undef PB_ASSOC_CLASS_C_DEC
#undef PB_ASSOC_DBG_ASSERT
#undef PB_ASSOC_DBG_VERIFY
#undef PB_ASSOC_DBG_ONLY
} // namespace detail
} // namespace pb_assoc
#endif // #ifndef RANGED_PROBE_FN_HPP
|
