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-// Boost string_algo library classification.hpp header file ---------------------------//
-
-// Copyright Pavol Droba 2002-2003.
-//
-// Distributed under the Boost Software License, Version 1.0.
-// (See accompanying file LICENSE_1_0.txt or copy at
-// http://www.boost.org/LICENSE_1_0.txt)
-
-// See http://www.boost.org/ for updates, documentation, and revision history.
-
-#ifndef BOOST_STRING_CLASSIFICATION_DETAIL_HPP
-#define BOOST_STRING_CLASSIFICATION_DETAIL_HPP
-
-#include <boost/algorithm/string/config.hpp>
-#include <algorithm>
-#include <functional>
-#include <locale>
-
-#include <boost/range/begin.hpp>
-#include <boost/range/end.hpp>
-
-#include <boost/algorithm/string/predicate_facade.hpp>
-#include <boost/type_traits/remove_const.hpp>
-
-namespace boost {
- namespace algorithm {
- namespace detail {
-
-// classification functors -----------------------------------------------//
-
- // is_classified functor
- struct is_classifiedF :
- public predicate_facade<is_classifiedF>
- {
- // Boost.ResultOf support
- typedef bool result_type;
-
- // Constructor from a locale
- is_classifiedF(std::ctype_base::mask Type, std::locale const & Loc = std::locale()) :
- m_Type(Type), m_Locale(Loc) {}
- // Operation
- template<typename CharT>
- bool operator()( CharT Ch ) const
- {
- return std::use_facet< std::ctype<CharT> >(m_Locale).is( m_Type, Ch );
- }
-
- #if defined(__BORLANDC__) && (__BORLANDC__ >= 0x560) && (__BORLANDC__ <= 0x582) && !defined(_USE_OLD_RW_STL)
- template<>
- bool operator()( char const Ch ) const
- {
- return std::use_facet< std::ctype<char> >(m_Locale).is( m_Type, Ch );
- }
- #endif
-
- private:
- std::ctype_base::mask m_Type;
- std::locale m_Locale;
- };
-
-
- // is_any_of functor
- /*
- returns true if the value is from the specified set
- */
- template<typename CharT>
- struct is_any_ofF :
- public predicate_facade<is_any_ofF<CharT> >
- {
- private:
- // set cannot operate on const value-type
- typedef typename ::boost::remove_const<CharT>::type set_value_type;
-
- public:
- // Boost.ResultOf support
- typedef bool result_type;
-
- // Constructor
- template<typename RangeT>
- is_any_ofF( const RangeT& Range ) : m_Size(0)
- {
- // Prepare storage
- m_Storage.m_dynSet=0;
-
- std::size_t Size=::boost::distance(Range);
- m_Size=Size;
- set_value_type* Storage=0;
-
- if(use_fixed_storage(m_Size))
- {
- // Use fixed storage
- Storage=&m_Storage.m_fixSet[0];
- }
- else
- {
- // Use dynamic storage
- m_Storage.m_dynSet=new set_value_type[m_Size];
- Storage=m_Storage.m_dynSet;
- }
-
- // Use fixed storage
- ::std::copy(::boost::begin(Range), ::boost::end(Range), Storage);
- ::std::sort(Storage, Storage+m_Size);
- }
-
- // Copy constructor
- is_any_ofF(const is_any_ofF& Other) : m_Size(Other.m_Size)
- {
- // Prepare storage
- m_Storage.m_dynSet=0;
- const set_value_type* SrcStorage=0;
- set_value_type* DestStorage=0;
-
- if(use_fixed_storage(m_Size))
- {
- // Use fixed storage
- DestStorage=&m_Storage.m_fixSet[0];
- SrcStorage=&Other.m_Storage.m_fixSet[0];
- }
- else
- {
- // Use dynamic storage
- m_Storage.m_dynSet=new set_value_type[m_Size];
- DestStorage=m_Storage.m_dynSet;
- SrcStorage=Other.m_Storage.m_dynSet;
- }
-
- // Use fixed storage
- ::std::memcpy(DestStorage, SrcStorage, sizeof(set_value_type)*m_Size);
- }
-
- // Destructor
- ~is_any_ofF()
- {
- if(!use_fixed_storage(m_Size) && m_Storage.m_dynSet!=0)
- {
- delete [] m_Storage.m_dynSet;
- }
- }
-
- // Assignment
- is_any_ofF& operator=(const is_any_ofF& Other)
- {
- // Handle self assignment
- if(this==&Other) return *this;
-
- // Prepare storage
- const set_value_type* SrcStorage;
- set_value_type* DestStorage;
-
- if(use_fixed_storage(Other.m_Size))
- {
- // Use fixed storage
- DestStorage=&m_Storage.m_fixSet[0];
- SrcStorage=&Other.m_Storage.m_fixSet[0];
-
- // Delete old storage if was present
- if(!use_fixed_storage(m_Size) && m_Storage.m_dynSet!=0)
- {
- delete [] m_Storage.m_dynSet;
- }
-
- // Set new size
- m_Size=Other.m_Size;
- }
- else
- {
- // Other uses dynamic storage
- SrcStorage=Other.m_Storage.m_dynSet;
-
- // Check what kind of storage are we using right now
- if(use_fixed_storage(m_Size))
- {
- // Using fixed storage, allocate new
- set_value_type* pTemp=new set_value_type[Other.m_Size];
- DestStorage=pTemp;
- m_Storage.m_dynSet=pTemp;
- m_Size=Other.m_Size;
- }
- else
- {
- // Using dynamic storage, check if can reuse
- if(m_Storage.m_dynSet!=0 && m_Size>=Other.m_Size && m_Size<Other.m_Size*2)
- {
- // Reuse the current storage
- DestStorage=m_Storage.m_dynSet;
- m_Size=Other.m_Size;
- }
- else
- {
- // Allocate the new one
- set_value_type* pTemp=new set_value_type[Other.m_Size];
- DestStorage=pTemp;
-
- // Delete old storage if necessary
- if(m_Storage.m_dynSet!=0)
- {
- delete [] m_Storage.m_dynSet;
- }
- // Store the new storage
- m_Storage.m_dynSet=pTemp;
- // Set new size
- m_Size=Other.m_Size;
- }
- }
- }
-
- // Copy the data
- ::std::memcpy(DestStorage, SrcStorage, sizeof(set_value_type)*m_Size);
-
- return *this;
- }
-
- // Operation
- template<typename Char2T>
- bool operator()( Char2T Ch ) const
- {
- const set_value_type* Storage=
- (use_fixed_storage(m_Size))
- ? &m_Storage.m_fixSet[0]
- : m_Storage.m_dynSet;
-
- return ::std::binary_search(Storage, Storage+m_Size, Ch);
- }
- private:
- // check if the size is eligible for fixed storage
- static bool use_fixed_storage(std::size_t size)
- {
- return size<=sizeof(set_value_type*)*2;
- }
-
-
- private:
- // storage
- // The actual used storage is selected on the type
- union
- {
- set_value_type* m_dynSet;
- set_value_type m_fixSet[sizeof(set_value_type*)*2];
- }
- m_Storage;
-
- // storage size
- ::std::size_t m_Size;
- };
-
- // is_from_range functor
- /*
- returns true if the value is from the specified range.
- (i.e. x>=From && x>=To)
- */
- template<typename CharT>
- struct is_from_rangeF :
- public predicate_facade< is_from_rangeF<CharT> >
- {
- // Boost.ResultOf support
- typedef bool result_type;
-
- // Constructor
- is_from_rangeF( CharT From, CharT To ) : m_From(From), m_To(To) {}
-
- // Operation
- template<typename Char2T>
- bool operator()( Char2T Ch ) const
- {
- return ( m_From <= Ch ) && ( Ch <= m_To );
- }
-
- private:
- CharT m_From;
- CharT m_To;
- };
-
- // class_and composition predicate
- template<typename Pred1T, typename Pred2T>
- struct pred_andF :
- public predicate_facade< pred_andF<Pred1T,Pred2T> >
- {
- public:
-
- // Boost.ResultOf support
- typedef bool result_type;
-
- // Constructor
- pred_andF( Pred1T Pred1, Pred2T Pred2 ) :
- m_Pred1(Pred1), m_Pred2(Pred2) {}
-
- // Operation
- template<typename CharT>
- bool operator()( CharT Ch ) const
- {
- return m_Pred1(Ch) && m_Pred2(Ch);
- }
-
- private:
- Pred1T m_Pred1;
- Pred2T m_Pred2;
- };
-
- // class_or composition predicate
- template<typename Pred1T, typename Pred2T>
- struct pred_orF :
- public predicate_facade< pred_orF<Pred1T,Pred2T> >
- {
- public:
- // Boost.ResultOf support
- typedef bool result_type;
-
- // Constructor
- pred_orF( Pred1T Pred1, Pred2T Pred2 ) :
- m_Pred1(Pred1), m_Pred2(Pred2) {}
-
- // Operation
- template<typename CharT>
- bool operator()( CharT Ch ) const
- {
- return m_Pred1(Ch) || m_Pred2(Ch);
- }
-
- private:
- Pred1T m_Pred1;
- Pred2T m_Pred2;
- };
-
- // class_not composition predicate
- template< typename PredT >
- struct pred_notF :
- public predicate_facade< pred_notF<PredT> >
- {
- public:
- // Boost.ResultOf support
- typedef bool result_type;
-
- // Constructor
- pred_notF( PredT Pred ) : m_Pred(Pred) {}
-
- // Operation
- template<typename CharT>
- bool operator()( CharT Ch ) const
- {
- return !m_Pred(Ch);
- }
-
- private:
- PredT m_Pred;
- };
-
- } // namespace detail
- } // namespace algorithm
-} // namespace boost
-
-
-#endif // BOOST_STRING_CLASSIFICATION_DETAIL_HPP
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