diff options
Diffstat (limited to 'libstdc++-v3/include/ext/pb_assoc/detail/hash_fn/ranged_probe_fn.hpp')
| -rw-r--r-- | libstdc++-v3/include/ext/pb_assoc/detail/hash_fn/ranged_probe_fn.hpp | 473 |
1 files changed, 473 insertions, 0 deletions
diff --git a/libstdc++-v3/include/ext/pb_assoc/detail/hash_fn/ranged_probe_fn.hpp b/libstdc++-v3/include/ext/pb_assoc/detail/hash_fn/ranged_probe_fn.hpp new file mode 100644 index 00000000000..60d6acabf16 --- /dev/null +++ b/libstdc++-v3/include/ext/pb_assoc/detail/hash_fn/ranged_probe_fn.hpp @@ -0,0 +1,473 @@ +// -*- 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, 59 Temple Place - Suite 330, Boston, MA 02111-1307, +// 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 + |