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513 lines
21 KiB
513 lines
21 KiB
/* /////////////////////////////////////////////////////////////////////////
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* File: rangelib/sequence_range.hpp
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*
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* Purpose: Sequence container range adaptor.
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*
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* Created: 4th November 2003
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* Updated: 10th August 2009
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*
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* Thanks: To Luoyi (whom I could not thank by email), for pointing out
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* some gaps with the sequence_range
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*
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* Home: http://stlsoft.org/
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*
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* Copyright (c) 2003-2009, Matthew Wilson and Synesis Software
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name(s) of Matthew Wilson and Synesis Software nor the names of
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* any contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* ////////////////////////////////////////////////////////////////////// */
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/** \file rangelib/sequence_range.hpp Sequence container range adaptor */
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#ifndef RANGELIB_INCL_RANGELIB_HPP_SEQUENCE_RANGE
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#define RANGELIB_INCL_RANGELIB_HPP_SEQUENCE_RANGE
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#ifndef STLSOFT_DOCUMENTATION_SKIP_SECTION
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# define RANGELIB_VER_RANGELIB_HPP_SEQUENCE_RANGE_MAJOR 2
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# define RANGELIB_VER_RANGELIB_HPP_SEQUENCE_RANGE_MINOR 12
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# define RANGELIB_VER_RANGELIB_HPP_SEQUENCE_RANGE_REVISION 2
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# define RANGELIB_VER_RANGELIB_HPP_SEQUENCE_RANGE_EDIT 62
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#endif /* !STLSOFT_DOCUMENTATION_SKIP_SECTION */
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/* /////////////////////////////////////////////////////////////////////////
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* Auto-generation and compatibility
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*/
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/*
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[Incompatibilies-start]
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STLSOFT_COMPILER_IS_DMC:
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STLSOFT_COMPILER_IS_MSVC: _MSC_VER < 1200
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STLSOFT_COMPILER_IS_MWERKS: (__MWERKS__ & 0xFF00) < 0x3000
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[Incompatibilies-end]
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*/
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/* /////////////////////////////////////////////////////////////////////////
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* Includes
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*/
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#ifndef RANGELIB_INCL_RANGELIB_HPP_RANGELIB
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# include <rangelib/rangelib.hpp>
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#endif /* !RANGELIB_INCL_RANGELIB_HPP_RANGELIB */
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#ifndef RANGELIB_INCL_RANGELIB_HPP_RANGE_CATEGORIES
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# include <rangelib/range_categories.hpp>
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#endif /* !RANGELIB_INCL_RANGELIB_HPP_RANGE_CATEGORIES */
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#ifndef RANGELIB_INCL_RANGELIB_HPP_OPERATOR_ADAPTORS
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# include <rangelib/operator_adaptors.hpp>
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#endif /* !RANGELIB_INCL_RANGELIB_HPP_OPERATOR_ADAPTORS */
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#ifndef STLSOFT_INCL_STLSOFT_META_HPP_CAPABILITIES
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# include <stlsoft/meta/capabilities.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_META_HPP_CAPABILITIES */
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#ifndef STLSOFT_INCL_STLSOFT_META_HPP_IS_CONST_TYPE
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# include <stlsoft/meta/is_const_type.hpp>
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#endif /* !STLSOFT_INCL_STLSOFT_META_HPP_IS_CONST_TYPE */
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#ifdef STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED
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# ifndef STLSOFT_INCL_STLSOFT_META_TYPEFIXER_HPP_DIFFERENCE_TYPE
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# include <stlsoft/meta/typefixer/difference_type.hpp>
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# endif /* !STLSOFT_INCL_STLSOFT_META_TYPEFIXER_HPP_DIFFERENCE_TYPE */
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# ifndef STLSOFT_INCL_STLSOFT_META_TYPEFIXER_HPP_REFERENCE
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# include <stlsoft/meta/typefixer/reference.hpp>
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# endif /* !STLSOFT_INCL_STLSOFT_META_TYPEFIXER_HPP_REFERENCE */
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# ifndef STLSOFT_INCL_STLSOFT_META_TYPEFIXER_HPP_ITERATOR
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# include <stlsoft/meta/typefixer/iterator.hpp>
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# endif /* !STLSOFT_INCL_STLSOFT_META_TYPEFIXER_HPP_ITERATOR */
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# ifndef STLSOFT_INCL_STLSOFT_META_TYPEFIXER_HPP_POINTER
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# include <stlsoft/meta/typefixer/pointer.hpp>
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# endif /* !STLSOFT_INCL_STLSOFT_META_TYPEFIXER_HPP_POINTER */
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# ifndef STLSOFT_INCL_STLSOFT_META_HPP_MEMBER_TRAITS
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# include <stlsoft/meta/member_traits.hpp>
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# endif /* !STLSOFT_INCL_STLSOFT_META_HPP_MEMBER_TRAITS */
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#endif /* STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED */
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#ifdef STLSOFT_UNITTEST
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# include <algorithm>
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# include <deque>
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# include <list>
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# include <numeric>
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# include <vector>
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#endif /* STLSOFT_UNITTEST */
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/* /////////////////////////////////////////////////////////////////////////
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* Namespace
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*/
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#ifndef RANGELIB_NO_NAMESPACE
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# if defined(_STLSOFT_NO_NAMESPACE) || \
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defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
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/* There is no stlsoft namespace, so must define ::rangelib */
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namespace rangelib
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{
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# else
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/* Define stlsoft::rangelib_project */
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namespace stlsoft
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{
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namespace rangelib_project
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{
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# endif /* _STLSOFT_NO_NAMESPACE */
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#endif /* !RANGELIB_NO_NAMESPACE */
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/* /////////////////////////////////////////////////////////////////////////
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* Classes
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*/
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#if defined(STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED)
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/** \brief Traits class for determining the attributes of range-adapted sequence container types
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*
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* \ingroup group__library__rangelib
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*/
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template< ss_typename_param_k S
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, bool B_CONST = false
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>
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struct sequence_range_traits
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{
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private:
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/// Indicates whether the parameterising sequence type has a \c reference member
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///
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/// \note We can't use the type fixer in a fully correct way here, because
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/// most compilers do not detect reference / const_reference members, so we
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/// take a guess and use the presence/absence of the iterator membertype as
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/// the sign of the presence of the reference member type.
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#if defined(STLSOFT_COMPILER_IS_MWERKS)
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enum { HAS_MEMBER_REFERENCE = 0 != member_traits<S>::has_member_reference };
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enum { HAS_MEMBER_CONST_REFERENCE = 0 != member_traits<S>::has_member_const_reference };
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#else /* ? compiler */
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enum { HAS_MEMBER_REFERENCE = 0 != member_traits<S>::has_member_iterator };
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enum { HAS_MEMBER_CONST_REFERENCE = 0 != member_traits<S>::has_member_const_iterator };
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#endif /* compiler */
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enum { HAS_MEMBER_ITERATOR = 0 != member_traits<S>::has_member_iterator }; // Need to do these as member enums, otherwise GCC2.95 cries a river
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enum { HAS_MEMBER_CONST_ITERATOR = 0 != member_traits<S>::has_member_const_iterator }; // Need to do these as member enums, otherwise GCC2.95 cries a river
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enum { HAS_MEMBER_DIFFERENCE_TYPE = 0 != member_traits<S>::has_member_difference_type }; // Need to do these as member enums, otherwise GCC2.95 cries a river
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enum { HAS_MEMBER_POINTER = 0 != member_traits<S>::has_member_pointer };
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enum { HAS_MEMBER_CONST_POINTER = 0 != member_traits<S>::has_member_const_pointer };
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public:
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/// The sequence type
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typedef S sequence_type;
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/// The sequence reference type
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typedef S& sequence_reference_type;
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/// The value type
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typedef ss_typename_type_k sequence_type::value_type value_type;
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/// The mutating (non-const) iterator type
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typedef ss_typename_type_k select_first_type_if<ss_typename_type_k ::stlsoft::typefixer::fixer_iterator<S, HAS_MEMBER_ITERATOR>::iterator
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, ss_typename_type_k ::stlsoft::typefixer::fixer_const_iterator<S, HAS_MEMBER_CONST_ITERATOR>::const_iterator
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, HAS_MEMBER_ITERATOR
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>::type iterator;
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/// The non-mutating (const) iterator type
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typedef ss_typename_type_k ::stlsoft::typefixer::fixer_const_iterator<S, HAS_MEMBER_CONST_ITERATOR>::const_iterator
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const_iterator;
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/// The mutating (non-const) reference type
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typedef ss_typename_type_k select_first_type_if<ss_typename_type_k ::stlsoft::typefixer::fixer_reference<sequence_type, HAS_MEMBER_REFERENCE>::reference
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, ss_typename_type_k ::stlsoft::typefixer::fixer_const_reference<sequence_type, HAS_MEMBER_CONST_REFERENCE>::const_reference
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, HAS_MEMBER_REFERENCE
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>::type reference;
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/// The non-mutating (const) reference type
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typedef ss_typename_type_k ::stlsoft::typefixer::fixer_const_reference<S, HAS_MEMBER_CONST_REFERENCE>::const_reference
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const_reference;
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/// The mutating (non-const) pointer type
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typedef ss_typename_type_k select_first_type_if<ss_typename_type_k ::stlsoft::typefixer::fixer_pointer<sequence_type, HAS_MEMBER_POINTER>::pointer
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, ss_typename_type_k ::stlsoft::typefixer::fixer_const_pointer<sequence_type, HAS_MEMBER_CONST_POINTER>::const_pointer
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, HAS_MEMBER_POINTER
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>::type pointer;
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/// The non-mutating (const) pointer type
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typedef ss_typename_type_k ::stlsoft::typefixer::fixer_const_pointer<S, HAS_MEMBER_CONST_POINTER>::const_pointer
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const_pointer;
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/// The difference type
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typedef ss_typename_type_k select_first_type_if<ss_typename_type_k ::stlsoft::typefixer::fixer_difference_type<S, HAS_MEMBER_DIFFERENCE_TYPE>::difference_type
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, ss_ptrdiff_t
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, HAS_MEMBER_DIFFERENCE_TYPE
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>::type difference_type;
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/// The size type
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typedef ss_typename_type_k sequence_type::size_type size_type;
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};
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/** \brief Partial specialisation for constant sequences
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*
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* \ingroup group__library__rangelib
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*/
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template< ss_typename_param_k S
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>
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struct sequence_range_traits<S, true>
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{
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public:
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/// The sequence type
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typedef S sequence_type;
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/// The sequence reference type
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typedef S& sequence_reference_type;
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/// The value type
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typedef ss_typename_type_k sequence_type::value_type value_type;
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/// The mutating (non-const) iterator type
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typedef ss_typename_type_k sequence_type::const_iterator iterator;
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/// The non-mutating (const) iterator type
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typedef ss_typename_type_k sequence_type::const_iterator const_iterator;
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/// The non-mutating (const) iterator type
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typedef ss_typename_type_k sequence_type::const_reference reference;
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/// The non-mutating (const) reference type
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typedef ss_typename_type_k sequence_type::const_reference const_reference;
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// TODO: Stick in the member-finder stuff here, so can assume ptrdiff_t if none found
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/// The difference type
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typedef ss_typename_type_k sequence_type::difference_type difference_type;
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/// The size type
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typedef ss_typename_type_k sequence_type::size_type size_type;
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};
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#else /* ? STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED */
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template< ss_typename_param_k S
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>
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struct sequence_range_traits
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{
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public:
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typedef S sequence_type;
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typedef S& sequence_reference_type;
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typedef ss_typename_type_k sequence_type::value_type value_type;
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typedef ss_typename_type_k sequence_type::iterator iterator;
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typedef ss_typename_type_k sequence_type::const_iterator const_iterator;
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typedef ss_typename_type_k sequence_type::reference reference;
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typedef ss_typename_type_k sequence_type::const_reference const_reference;
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typedef ss_typename_type_k sequence_type::difference_type difference_type;
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typedef ss_typename_type_k sequence_type::size_type size_type;
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};
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template< ss_typename_param_k S
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>
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struct const_sequence_range_traits
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{
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public:
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typedef S sequence_type;
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typedef S const& sequence_reference_type;
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typedef ss_typename_type_k sequence_type::value_type value_type;
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typedef ss_typename_type_k sequence_type::const_iterator iterator;
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typedef ss_typename_type_k sequence_type::const_iterator const_iterator;
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typedef ss_typename_type_k sequence_type::const_reference reference;
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typedef ss_typename_type_k sequence_type::const_reference const_reference;
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typedef ss_typename_type_k sequence_type::difference_type difference_type;
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typedef ss_typename_type_k sequence_type::size_type size_type;
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};
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template< ss_typename_param_k S
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>
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struct non_const_sequence_range_traits
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{
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public:
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typedef S sequence_type;
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typedef S const& sequence_reference_type;
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typedef ss_typename_type_k sequence_type::value_type value_type;
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typedef ss_typename_type_k sequence_type::iterator iterator;
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typedef ss_typename_type_k sequence_type::iterator const_iterator;
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typedef ss_typename_type_k sequence_type::reference reference;
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typedef ss_typename_type_k sequence_type::reference const_reference;
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typedef ss_typename_type_k sequence_type::difference_type difference_type;
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typedef ss_typename_type_k sequence_type::size_type size_type;
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};
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#endif /* STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED */
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/** \brief This class adapts an STL sequence instance into a Range
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*
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* \ingroup group__library__rangelib
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*
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* \param S The sequence class
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* \param T The sequence range traits, used to deduce the Range's iterator, const_iterator, reference, const_reference and value_type
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*
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* It is categoried as an Iterable Range
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*
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* It could be used as follows
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\code
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void dump_elements(std::vector<int> const& numbers)
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{
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for(sequence_range<std::vector<int> > r(numbers); r; ++r)
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{
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std::cout << &r; // Dump the current value to stdout
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}
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}
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\endcode
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*/
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template< ss_typename_param_k S
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#if defined(STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED)
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, ss_typename_param_k T = sequence_range_traits<S, is_const_type<S>::value> // Determines whether the sequence is const
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#else /* ? STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED */
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, ss_typename_param_k T = const_sequence_range_traits<S> // Defaults to a const sequence
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#endif /* STLSOFT_CF_HAS_MEMBER_TYPE_SUPPORTED */
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>
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class sequence_range
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: public mutating_operator_adaptor<sequence_range<S, T>, T> // This provides the operator forms of the methods
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, public iterable_range_tag
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{
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public:
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/// The sequence type
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typedef S sequence_type;
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/// The traits type
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typedef T traits_type;
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/// The range category tag type
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typedef iterable_range_tag range_tag_type;
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/// The current instantiation of the type
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typedef sequence_range<S, T> class_type;
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/// The sequence reference type
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typedef ss_typename_type_k traits_type::sequence_reference_type sequence_reference_type;
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/// The value type
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typedef ss_typename_type_k traits_type::value_type value_type;
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/// The mutating (non-const) iterator type
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typedef ss_typename_type_k traits_type::iterator iterator;
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/// The non-mutating (const) iterator type
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typedef ss_typename_type_k traits_type::const_iterator const_iterator;
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/// The mutating (non-const) reference type
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typedef ss_typename_type_k traits_type::reference reference;
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/// The non-mutating (const) reference type
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typedef ss_typename_type_k traits_type::const_reference const_reference;
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/// The difference type
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typedef ss_typename_type_k traits_type::difference_type difference_type;
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/// The size type
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typedef ss_typename_type_k traits_type::size_type size_type;
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public:
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#if !defined(STLSOFT_CF_MEMBER_TEMPLATE_CTOR_SUPPORT) || \
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defined(STLSOFT_CF_MEMBER_TEMPLATE_CTOR_OVERLOAD_DISCRIMINATED) || \
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( defined(STLSOFT_COMPILER_IS_MSVC) && \
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_MSC_VER == 1200)
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/// Constructor
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///
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/// \param rhs The sequence which will be adapted to a range
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sequence_range(sequence_reference_type rhs) // The constness of this will require some thinking about. Maybe need sequence_range and const_sequence_range??
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: m_position(rhs.begin())
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, m_last(rhs.end())
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{}
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#endif /* !STLSOFT_CF_MEMBER_TEMPLATE_CTOR_SUPPORT || STLSOFT_CF_MEMBER_TEMPLATE_CTOR_OVERLOAD_DISCRIMINATED */
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#if defined(STLSOFT_CF_MEMBER_TEMPLATE_CTOR_SUPPORT) && \
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( !defined(STLSOFT_COMPILER_IS_MSVC) || \
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_MSC_VER != 1200)
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/// Constructor
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///
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/// \param rhs The sequence which will be adapted to a range
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template <ss_typename_param_k S1>
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sequence_range(S1& rhs)
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: m_position(rhs.begin())
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, m_last(rhs.end())
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{}
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#endif /* STLSOFT_CF_MEMBER_TEMPLATE_CTOR_SUPPORT */
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#ifdef STLSOFT_CF_STATIC_ARRAY_SIZE_DETERMINATION_SUPPORT
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/// Constructs a range over an array
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template <ss_size_t N>
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sequence_range(S (&ar)[N])
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: m_position(&ar[0])
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, m_last(&ar[N])
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{}
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#endif /* STLSOFT_CF_STATIC_ARRAY_SIZE_DETERMINATION_SUPPORT */
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/// Constructs from an iterator
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///
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/// \param position The start position of the range
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/// \param last The end position of the range
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sequence_range(iterator position, iterator last)
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: m_position(position)
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, m_last(last)
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{}
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/// Copy constructor
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///
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/// \note This has to be provided, to avoid precipitating C4217 with Visual C++
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sequence_range(class_type const& rhs)
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: m_position(rhs.m_position)
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, m_last(rhs.m_last)
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{}
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/// Copy assignment operator
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///
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/// \note This has to be provided, to avoid precipitating C4217 with Visual C++
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class_type& operator =(class_type const& rhs)
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{
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m_position = rhs.m_position;
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m_last = rhs.m_last;
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return *this;
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}
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/// \name Notional Range methods
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/// @{
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public:
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/// Indicates whether the range is open
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ss_bool_t is_open() const
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{
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return m_position != m_last;
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}
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/// Returns the current value in the range
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reference current()
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|
{
|
|
STLSOFT_ASSERT(is_open());
|
|
|
|
return *m_position;
|
|
}
|
|
/// Returns the current value in the range
|
|
const_reference current() const
|
|
{
|
|
STLSOFT_ASSERT(is_open());
|
|
|
|
return *m_position;
|
|
}
|
|
/// Advances the current position in the range
|
|
class_type& advance()
|
|
{
|
|
STLSOFT_MESSAGE_ASSERT("Attempting to increment the range past its end point", is_open());
|
|
|
|
++m_position;
|
|
|
|
return *this;
|
|
}
|
|
/// @}
|
|
|
|
/// \name Iterable Range methods
|
|
/// @{
|
|
public:
|
|
/// Returns an iterator to the current position of the range
|
|
iterator begin()
|
|
{
|
|
return m_position;
|
|
}
|
|
/// Returns an iterator to the end of the range
|
|
iterator end()
|
|
{
|
|
return m_last;
|
|
}
|
|
|
|
/// Returns an iterator to the current position of the range
|
|
const_iterator begin() const
|
|
{
|
|
return m_position;
|
|
}
|
|
/// Returns an iterator to the end of the range
|
|
const_iterator end() const
|
|
{
|
|
return m_last;
|
|
}
|
|
/// @}
|
|
|
|
// Members
|
|
private:
|
|
iterator m_position;
|
|
iterator m_last;
|
|
};
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// Functions
|
|
|
|
template<ss_typename_param_k S>
|
|
#ifdef STLSOFT_CF_TEMPLATE_PARTIAL_SPECIALISATION_SUPPORT
|
|
inline sequence_range<S> make_sequence_range(S &s)
|
|
#else /* ? STLSOFT_CF_TEMPLATE_PARTIAL_SPECIALISATION_SUPPORT */
|
|
inline sequence_range<S> make_sequence_range(S const& s)
|
|
#endif /* STLSOFT_CF_TEMPLATE_PARTIAL_SPECIALISATION_SUPPORT */
|
|
{
|
|
return sequence_range<S>(s);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////
|
|
// Unit-testing
|
|
|
|
#ifdef STLSOFT_UNITTEST
|
|
# include "./unittest/sequence_range_unittest_.h"
|
|
#endif /* STLSOFT_UNITTEST */
|
|
|
|
/* ////////////////////////////////////////////////////////////////////// */
|
|
|
|
#ifndef RANGELIB_NO_NAMESPACE
|
|
# if defined(_STLSOFT_NO_NAMESPACE) || \
|
|
defined(STLSOFT_DOCUMENTATION_SKIP_SECTION)
|
|
} // namespace rangelib
|
|
# else
|
|
} // namespace rangelib_project
|
|
} // namespace stlsoft
|
|
# endif /* _STLSOFT_NO_NAMESPACE */
|
|
#endif /* !RANGELIB_NO_NAMESPACE */
|
|
|
|
/* ////////////////////////////////////////////////////////////////////// */
|
|
|
|
#endif /* !RANGELIB_INCL_RANGELIB_HPP_SEQUENCE_RANGE */
|
|
|
|
/* ///////////////////////////// end of file //////////////////////////// */
|