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Diffstat (limited to 'gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp')
| -rw-r--r-- | gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp | 327 |
1 files changed, 327 insertions, 0 deletions
diff --git a/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp new file mode 100644 index 000000000..ddfba9de1 --- /dev/null +++ b/gcc-4.4.3/libstdc++-v3/include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp @@ -0,0 +1,327 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2009 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 3, 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. + +// Under Section 7 of GPL version 3, you are granted additional +// permissions described in the GCC Runtime Library Exception, version +// 3.1, as published by the Free Software Foundation. + +// You should have received a copy of the GNU General Public License and +// a copy of the GCC Runtime Library Exception along with this program; +// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see +// <http://www.gnu.org/licenses/>. + +// 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 PB_DS_RANGED_PROBE_FN_HPP +#define PB_DS_RANGED_PROBE_FN_HPP + +#include <ext/pb_ds/detail/basic_types.hpp> +#include <utility> +#include <debug/debug.h> + +namespace __gnu_pbds +{ + namespace detail + { + template<typename Key, typename Hash_Fn, typename Allocator, + typename Comb_Probe_Fn, typename Probe_Fn, bool Store_Hash> + class ranged_probe_fn; + +#define PB_DS_CLASS_T_DEC \ + template<typename Key, typename Hash_Fn, typename Allocator, \ + typename Comb_Probe_Fn, typename Probe_Fn> + +#define PB_DS_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, typename Hash_Fn, typename Allocator, + typename Comb_Probe_Fn, typename 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 comb_probe_fn_base; + typedef Hash_Fn hash_fn_base; + typedef Probe_Fn probe_fn_base; + typedef typename Allocator::template rebind<Key>::other key_allocator; + typedef typename key_allocator::const_reference const_key_reference; + + ranged_probe_fn(size_type); + + ranged_probe_fn(size_type, const Hash_Fn&); + + ranged_probe_fn(size_type, const Hash_Fn&, const Comb_Probe_Fn&); + + ranged_probe_fn(size_type, const Hash_Fn&, const Comb_Probe_Fn&, + const Probe_Fn&); + + void + swap(PB_DS_CLASS_C_DEC&); + + void + notify_resized(size_type); + + inline size_type + operator()(const_key_reference) const; + + inline size_type + operator()(const_key_reference, size_type, size_type) const; + }; + + PB_DS_CLASS_T_DEC + PB_DS_CLASS_C_DEC:: + ranged_probe_fn(size_type size) + { Comb_Probe_Fn::notify_resized(size); } + + PB_DS_CLASS_T_DEC + PB_DS_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_DS_CLASS_T_DEC + PB_DS_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) + { comb_probe_fn_base::notify_resized(size); } + + PB_DS_CLASS_T_DEC + PB_DS_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) + { comb_probe_fn_base::notify_resized(size); } + + PB_DS_CLASS_T_DEC + void + PB_DS_CLASS_C_DEC:: + swap(PB_DS_CLASS_C_DEC& other) + { + comb_probe_fn_base::swap(other); + std::swap((Hash_Fn& )(*this), (Hash_Fn&)other); + } + + PB_DS_CLASS_T_DEC + void + PB_DS_CLASS_C_DEC:: + notify_resized(size_type size) + { comb_probe_fn_base::notify_resized(size); } + + PB_DS_CLASS_T_DEC + inline typename PB_DS_CLASS_C_DEC::size_type + PB_DS_CLASS_C_DEC:: + operator()(const_key_reference r_key) const + { return comb_probe_fn_base::operator()(hash_fn_base::operator()(r_key)); } + + PB_DS_CLASS_T_DEC + inline typename PB_DS_CLASS_C_DEC::size_type + PB_DS_CLASS_C_DEC:: + operator()(const_key_reference, size_type hash, size_type i) const + { + return comb_probe_fn_base::operator()(hash + probe_fn_base::operator()(i)); + } + +#undef PB_DS_CLASS_T_DEC +#undef PB_DS_CLASS_C_DEC + +#define PB_DS_CLASS_T_DEC \ + template<typename Key, typename Hash_Fn, typename Allocator, \ + typename Comb_Probe_Fn, typename Probe_Fn> + +#define PB_DS_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 not be stored. + **/ + template<typename Key, typename Hash_Fn, typename Allocator, + typename Comb_Probe_Fn, typename 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 comb_probe_fn_base; + typedef Hash_Fn hash_fn_base; + typedef Probe_Fn probe_fn_base; + typedef typename Allocator::template rebind<Key>::other key_allocator; + typedef typename key_allocator::const_reference const_key_reference; + + ranged_probe_fn(size_type); + + ranged_probe_fn(size_type, const Hash_Fn&); + + ranged_probe_fn(size_type, const Hash_Fn&, + const Comb_Probe_Fn&); + + ranged_probe_fn(size_type, const Hash_Fn&, const Comb_Probe_Fn&, + const Probe_Fn&); + + void + swap(PB_DS_CLASS_C_DEC&); + + void + notify_resized(size_type); + + inline comp_hash + operator()(const_key_reference) const; + + inline size_type + operator()(const_key_reference, size_type, size_type) const; + + inline size_type + operator()(const_key_reference, size_type) const; + }; + + PB_DS_CLASS_T_DEC + PB_DS_CLASS_C_DEC:: + ranged_probe_fn(size_type size) + { Comb_Probe_Fn::notify_resized(size); } + + PB_DS_CLASS_T_DEC + PB_DS_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_DS_CLASS_T_DEC + PB_DS_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) + { comb_probe_fn_base::notify_resized(size); } + + PB_DS_CLASS_T_DEC + PB_DS_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) + { comb_probe_fn_base::notify_resized(size); } + + PB_DS_CLASS_T_DEC + void + PB_DS_CLASS_C_DEC:: + swap(PB_DS_CLASS_C_DEC& other) + { + comb_probe_fn_base::swap(other); + std::swap((Hash_Fn& )(*this), (Hash_Fn& )other); + } + + PB_DS_CLASS_T_DEC + void + PB_DS_CLASS_C_DEC:: + notify_resized(size_type size) + { comb_probe_fn_base::notify_resized(size); } + + PB_DS_CLASS_T_DEC + inline typename PB_DS_CLASS_C_DEC::comp_hash + PB_DS_CLASS_C_DEC:: + operator()(const_key_reference r_key) const + { + const size_type hash = hash_fn_base::operator()(r_key); + return std::make_pair(comb_probe_fn_base::operator()(hash), hash); + } + + PB_DS_CLASS_T_DEC + inline typename PB_DS_CLASS_C_DEC::size_type + PB_DS_CLASS_C_DEC:: + operator()(const_key_reference, size_type hash, size_type i) const + { + return comb_probe_fn_base::operator()(hash + probe_fn_base::operator()(i)); + } + + PB_DS_CLASS_T_DEC + inline typename PB_DS_CLASS_C_DEC::size_type + PB_DS_CLASS_C_DEC:: + operator() +#ifdef _GLIBCXX_DEBUG + (const_key_reference r_key, size_type hash) const +#else + (const_key_reference /*r_key*/, size_type hash) const +#endif + { + _GLIBCXX_DEBUG_ASSERT(hash == hash_fn_base::operator()(r_key)); + return hash; + } + +#undef PB_DS_CLASS_T_DEC +#undef PB_DS_CLASS_C_DEC + + /** + * 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, typename Allocator, typename 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 comb_probe_fn_base; + typedef typename Allocator::template rebind<Key>::other key_allocator; + typedef typename key_allocator::const_reference const_key_reference; + + ranged_probe_fn(size_type size) + { Comb_Probe_Fn::notify_resized(size); } + + ranged_probe_fn(size_type, const Comb_Probe_Fn& r_comb_probe_fn) + : Comb_Probe_Fn(r_comb_probe_fn) + { } + + ranged_probe_fn(size_type, const null_hash_fn&, + const Comb_Probe_Fn& r_comb_probe_fn, + const null_probe_fn&) + : Comb_Probe_Fn(r_comb_probe_fn) + { } + + void + swap(ranged_probe_fn& other) + { comb_probe_fn_base::swap(other); } + }; + } // namespace detail +} // namespace __gnu_pbds + +#endif + |