[thirdparty/gcc.git] / libstdc++-v3 / include / ext / pb_ds / detail / pat_trie_ / synth_e_access_traits.hpp

// -*- C++ -*-

// Copyright (C) 2005, 2006 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 synth_e_access_traits.hpp
 * Contains an implementation class for a patricia tree.
 */

#ifndef PB_DS_SYNTH_E_ACCESS_TRAITS_HPP
#define PB_DS_SYNTH_E_ACCESS_TRAITS_HPP

#include <ext/pb_ds/detail/type_utils.hpp>

namespace pb_ds
{
  namespace detail
  {

#define PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC				\
    template<typename Type_Traits, bool Set, class E_Access_Traits>

#define PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC				\
    synth_e_access_traits<						\
						Type_Traits,		\
						Set,			\
						E_Access_Traits>

    template<typename Type_Traits, bool Set, class E_Access_Traits>
    struct synth_e_access_traits : public E_Access_Traits
    {

    private:
      typedef E_Access_Traits base_type;

      typedef Type_Traits type_traits;

      typedef typename type_traits::const_key_reference const_key_reference;

      typedef typename type_traits::const_reference const_reference;

    public:
      synth_e_access_traits();

      synth_e_access_traits(const E_Access_Traits& r_traits);

      inline bool
      equal_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after = true) const;

      bool
      equal_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const;

      bool
      cmp_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after = false) const;

      bool
      cmp_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const;

      inline static const_key_reference
      extract_key(const_reference r_val);

#ifdef _GLIBCXX_DEBUG
      bool
      operator()(const_key_reference r_lhs, const_key_reference r_rhs);
#endif

    private:
      inline static const_key_reference
      extract_key(const_reference r_val, true_type);

      inline static const_key_reference
      extract_key(const_reference r_val, false_type);

    private:
      static integral_constant<int,Set> s_set_ind;
    };

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    integral_constant<int,Set>
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::s_set_ind;

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    synth_e_access_traits()
    { }

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    synth_e_access_traits(const E_Access_Traits& r_traits) :
      E_Access_Traits(r_traits)
    { }

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    inline bool
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    equal_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after /*= false */) const
    {
      while (b_l != e_l)
	{
	  if (b_r == e_r)
	    return (false);
	  if (base_type::e_pos(*b_l) != base_type::e_pos(*b_r))
	    return (false);
	  ++b_l;
	  ++b_r;
	}
      return (!compare_after || b_r == e_r);
    }

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    bool
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    equal_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const
    {
      return (equal_prefixes(base_type::begin(r_lhs_key),
			     base_type::end(r_lhs_key),
			     base_type::begin(r_rhs_key),
			     base_type::end(r_rhs_key),
			     true));
    }

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    bool
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    cmp_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after /* = false*/) const
    {
      while (b_l != e_l)
	{
	  if (b_r == e_r)
	    return (false);
	  const typename base_type::size_type l_pos =
	    base_type::e_pos(*b_l);
	  const typename base_type::size_type r_pos =
	    base_type::e_pos(*b_r);
	  if (l_pos != r_pos)
	    return (l_pos < r_pos);
	  ++b_l;
	  ++b_r;
	}

      if (!compare_after)
	return (false);
      return (b_r != e_r);
    }

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    bool
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    cmp_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const
    {
      return (cmp_prefixes(base_type::begin(r_lhs_key),
			   base_type::end(r_lhs_key),
			   base_type::begin(r_rhs_key),
			   base_type::end(r_rhs_key),
			   true));
    }

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    extract_key(const_reference r_val)
    {
      return (extract_key(r_val, s_set_ind));
    }

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    extract_key(const_reference r_val, true_type)
    {
      return (r_val);
    }

    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    extract_key(const_reference r_val, false_type)
    {
      return (r_val.first);
    }

#ifdef _GLIBCXX_DEBUG
    PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
    bool
    PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
    operator()(const_key_reference r_lhs, const_key_reference r_rhs)
    {
      return (cmp_keys(r_lhs, r_rhs));
    }
#endif 

#undef PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
#undef PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC

  } // namespace detail
} // namespace pb_ds

#endif
Commit	Line	Data
4569a895 AT	1	// -- C++ --
	2
	3	// Copyright (C) 2005, 2006 Free Software Foundation, Inc.
	4	//
	5	// This file is part of the GNU ISO C++ Library. This library is free
	6	// software; you can redistribute it and/or modify it under the terms
	7	// of the GNU General Public License as published by the Free Software
	8	// Foundation; either version 2, or (at your option) any later
	9	// version.
	10
	11	// This library is distributed in the hope that it will be useful, but
	12	// WITHOUT ANY WARRANTY; without even the implied warranty of
	13	// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	14	// General Public License for more details.
	15
	16	// You should have received a copy of the GNU General Public License
	17	// along with this library; see the file COPYING. If not, write to
	18	// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
	19	// MA 02111-1307, USA.
	20
	21	// As a special exception, you may use this file as part of a free
	22	// software library without restriction. Specifically, if other files
	23	// instantiate templates or use macros or inline functions from this
	24	// file, or you compile this file and link it with other files to
	25	// produce an executable, this file does not by itself cause the
	26	// resulting executable to be covered by the GNU General Public
	27	// License. This exception does not however invalidate any other
	28	// reasons why the executable file might be covered by the GNU General
	29	// Public License.
	30
	31	// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
	32
	33	// Permission to use, copy, modify, sell, and distribute this software
	34	// is hereby granted without fee, provided that the above copyright
	35	// notice appears in all copies, and that both that copyright notice
	36	// and this permission notice appear in supporting documentation. None
	37	// of the above authors, nor IBM Haifa Research Laboratories, make any
	38	// representation about the suitability of this software for any
	39	// purpose. It is provided "as is" without express or implied
	40	// warranty.
	41
	42	/**
	43	* @file synth_e_access_traits.hpp
	44	* Contains an implementation class for a patricia tree.
	45	*/
	46
	47	#ifndef PB_DS_SYNTH_E_ACCESS_TRAITS_HPP
	48	#define PB_DS_SYNTH_E_ACCESS_TRAITS_HPP
	49
	50	#include <ext/pb_ds/detail/type_utils.hpp>
	51
	52	namespace pb_ds
	53	{
	54	namespace detail
	55	{
	56
	57	#define PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC \
	58	template<typename Type_Traits, bool Set, class E_Access_Traits>
	59
	60	#define PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC \
	61	synth_e_access_traits< \
	62	Type_Traits, \
	63	Set, \
	64	E_Access_Traits>
65
66	template<typename Type_Traits, bool Set, class E_Access_Traits>
67	struct synth_e_access_traits : public E_Access_Traits
68	{
69
70	private:
71	typedef E_Access_Traits base_type;
72
73	typedef Type_Traits type_traits;
74
75	typedef typename type_traits::const_key_reference const_key_reference;
76
77	typedef typename type_traits::const_reference const_reference;
78
79	public:
80	synth_e_access_traits();
81
82	synth_e_access_traits(const E_Access_Traits& r_traits);
83
84	inline bool
85	equal_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after = true) const;
86
87	bool
88	equal_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const;
89
90	bool
91	cmp_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after = false) const;
92
93	bool
94	cmp_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const;
95
96	inline static const_key_reference
97	extract_key(const_reference r_val);
98
47bea7b8	99	#ifdef _GLIBCXX_DEBUG
4569a895 AT	100	bool
4569a895 AT	101	operator()(const_key_reference r_lhs, const_key_reference r_rhs);
47bea7b8	102	#endif
4569a895 AT	103
	104	private:
	105	inline static const_key_reference
	106	extract_key(const_reference r_val, true_type);
	107
	108	inline static const_key_reference
	109	extract_key(const_reference r_val, false_type);
	110
	111	private:
	112	static integral_constant<int,Set> s_set_ind;
	113	};
	114
	115	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	116	integral_constant<int,Set>
	117	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::s_set_ind;
	118
	119	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	120	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	121	synth_e_access_traits()
	122	{ }
	123
	124	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	125	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	126	synth_e_access_traits(const E_Access_Traits& r_traits) :
	127	E_Access_Traits(r_traits)
	128	{ }
	129
	130	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	131	inline bool
	132	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	133	equal_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after /= false /) const
	134	{
	135	while (b_l != e_l)
	136	{
	137	if (b_r == e_r)
	138	return (false);
4569a895 AT	139	if (base_type::e_pos(b_l) != base_type::e_pos(b_r))
4569a895 AT	140	return (false);
4569a895 AT	141	++b_l;
	142	++b_r;
	143	}
4569a895 AT	144	return (!compare_after \|\| b_r == e_r);
	145	}
	146
	147	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	148	bool
	149	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	150	equal_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const
	151	{
	152	return (equal_prefixes(base_type::begin(r_lhs_key),
	153	base_type::end(r_lhs_key),
	154	base_type::begin(r_rhs_key),
	155	base_type::end(r_rhs_key),
	156	true));
	157	}
	158
	159	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	160	bool
	161	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	162	cmp_prefixes(typename base_type::const_iterator b_l, typename base_type::const_iterator e_l, typename base_type::const_iterator b_r, typename base_type::const_iterator e_r, bool compare_after /* = false*/) const
	163	{
	164	while (b_l != e_l)
	165	{
	166	if (b_r == e_r)
	167	return (false);
4569a895 AT	168	const typename base_type::size_type l_pos =
	169	base_type::e_pos(*b_l);
	170	const typename base_type::size_type r_pos =
	171	base_type::e_pos(*b_r);
4569a895 AT	172	if (l_pos != r_pos)
4569a895 AT	173	return (l_pos < r_pos);
4569a895 AT	174	++b_l;
	175	++b_r;
	176	}
	177
	178	if (!compare_after)
	179	return (false);
4569a895 AT	180	return (b_r != e_r);
	181	}
	182
	183	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	184	bool
	185	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	186	cmp_keys(const_key_reference r_lhs_key, const_key_reference r_rhs_key) const
	187	{
	188	return (cmp_prefixes(base_type::begin(r_lhs_key),
	189	base_type::end(r_lhs_key),
	190	base_type::begin(r_rhs_key),
	191	base_type::end(r_rhs_key),
	192	true));
	193	}
	194
	195	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	196	inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference
	197	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	198	extract_key(const_reference r_val)
	199	{
	200	return (extract_key(r_val, s_set_ind));
	201	}
	202
	203	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	204	inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference
	205	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	206	extract_key(const_reference r_val, true_type)
	207	{
	208	return (r_val);
	209	}
	210
	211	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	212	inline typename PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::const_key_reference
	213	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	214	extract_key(const_reference r_val, false_type)
	215	{
	216	return (r_val.first);
	217	}
	218
47bea7b8	219	#ifdef _GLIBCXX_DEBUG
4569a895 AT	220	PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
	221	bool
	222	PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC::
	223	operator()(const_key_reference r_lhs, const_key_reference r_rhs)
	224	{
	225	return (cmp_keys(r_lhs, r_rhs));
	226	}
47bea7b8	227	#endif
4569a895 AT	228
4569a895 AT	229	#undef PB_DS_SYNTH_E_ACCESS_TRAITS_T_DEC
4569a895 AT	230	#undef PB_DS_SYNTH_E_ACCESS_TRAITS_C_DEC
	231
	232	} // namespace detail
	233	} // namespace pb_ds
	234
47bea7b8	235	#endif