comparison DEPENDENCIES/generic/include/boost/locale/boundary/segment.hpp @ 16:2665513ce2d3

Add boost headers

+//
+//  Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
+//
+//  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)
+//
+#ifndef BOOST_LOCALE_BOUNDARY_SEGMENT_HPP_INCLUDED
+#define BOOST_LOCALE_BOUNDARY_SEGMENT_HPP_INCLUDED
+#include <boost/locale/config.hpp>
+#ifdef BOOST_MSVC
+#  pragma warning(push)
+#  pragma warning(disable : 4275 4251 4231 4660)
+#endif
+#include <locale>
+#include <string>
+#include <iosfwd>
+#include <iterator>
+
+
+namespace boost {
+namespace locale {
+namespace boundary {
+    /// \cond INTERNAL
+    namespace details {
+        template<typename LeftIterator,typename RightIterator>
+        int compare_text(LeftIterator l_begin,LeftIterator l_end,RightIterator r_begin,RightIterator r_end)
+        {
+            typedef LeftIterator left_iterator;
+            typedef RightIterator right_iterator;
+            typedef typename std::iterator_traits<left_iterator>::value_type char_type;
+            typedef std::char_traits<char_type> traits;
+            while(l_begin!=l_end && r_begin!=r_end) {
+                char_type lchar = *l_begin++;
+                char_type rchar = *r_begin++;
+                if(traits::eq(lchar,rchar))
+                    continue;
+                if(traits::lt(lchar,rchar))
+                    return -1;
+                else
+                    return 1;
+            }
+            if(l_begin==l_end && r_begin==r_end)
+                return 0;
+            if(l_begin==l_end)
+                return -1;
+            else
+                return 1;
+        }
+
+
+        template<typename Left,typename Right>
+        int compare_text(Left const &l,Right const &r)
+        {
+            return compare_text(l.begin(),l.end(),r.begin(),r.end());
+        }
+        
+        template<typename Left,typename Char>
+        int compare_string(Left const &l,Char const *begin)
+        {
+            Char const *end = begin;
+            while(*end!=0)
+                end++;
+            return compare_text(l.begin(),l.end(),begin,end);
+        }
+
+        template<typename Right,typename Char>
+        int compare_string(Char const *begin,Right const &r)
+        {
+            Char const *end = begin;
+            while(*end!=0)
+                end++;
+            return compare_text(begin,end,r.begin(),r.end());
+        }
+
+    }
+    /// \endcond
+
+    ///
+    /// \addtogroup boundary
+    /// @{
+
+    ///
+    /// \brief a segment object that represents a pair of two iterators that define the range where
+    /// this segment exits and a rule that defines it.
+    ///
+    /// This type of object is dereferenced by the iterators of segment_index. Using a rule() member function
+    /// you can get a specific rule this segment was selected with. For example, when you use
+    /// word boundary analysis, you can check if the specific word contains Kana letters by checking (rule() & \ref word_kana)!=0
+    /// For a sentence analysis you can check if the sentence is selected because a sentence terminator is found (\ref sentence_term) or
+    /// there is a line break (\ref sentence_sep).
+    ///
+    /// This object can be automatically converted to std::basic_string with the same type of character. It is also
+    /// valid range that has begin() and end() member functions returning iterators on the location of the segment.
+    ///
+    /// \see
+    ///
+    /// - \ref segment_index
+    /// - \ref boundary_point 
+    /// - \ref boundary_point_index 
+    ///
+    template<typename IteratorType>
+    class segment : public std::pair<IteratorType,IteratorType> {
+    public:
+        ///
+        /// The type of the underlying character 
+        ///
+        typedef typename std::iterator_traits<IteratorType>::value_type char_type;
+        ///
+        /// The type of the string it is converted to
+        ///
+        typedef std::basic_string<char_type> string_type;
+        ///
+        /// The value that iterators return  - the character itself
+        ///
+        typedef char_type value_type;
+        ///
+        /// The iterator that allows to iterate the range
+        ///
+        typedef IteratorType iterator;
+        ///
+        /// The iterator that allows to iterate the range
+        ///
+        typedef IteratorType const_iterator;
+        ///
+        /// The type that represent a difference between two iterators
+        ///
+        typedef typename std::iterator_traits<IteratorType>::difference_type difference_type;
+
+        ///
+        /// Default constructor
+        ///
+        segment() {}
+        ///
+        /// Create a segment using two iterators and a rule that represents this point
+        ///
+        segment(iterator b,iterator e,rule_type r) :
+            std::pair<IteratorType,IteratorType>(b,e),
+            rule_(r)
+        {
+        }
+        ///
+        /// Set the start of the range
+        ///
+        void begin(iterator const &v)
+        {
+            this->first = v;
+        }
+        ///
+        /// Set the end of the range
+        ///
+         void end(iterator const &v)
+        {
+            this->second = v;
+        }
+
+        ///
+        /// Get the start of the range
+        ///
+        IteratorType begin() const 
+        {
+            return this->first;
+        }
+        ///
+        /// Set the end of the range
+        ///
+        IteratorType end() const
+        {
+            return this->second;
+        }
+
+        ///
+        /// Convert the range to a string automatically
+        ///
+        template <class T, class A>
+        operator std::basic_string<char_type, T, A> ()const
+        {
+            return std::basic_string<char_type, T, A>(this->first, this->second);
+        }
+        
+        ///
+        /// Create a string from the range explicitly
+        ///
+        string_type str() const
+        {
+            return string_type(begin(),end());
+        }
+
+        ///
+        /// Get the length of the text chunk
+        ///
+
+        size_t length() const
+        {
+            return std::distance(begin(),end());
+        }
+
+        ///
+        /// Check if the segment is empty
+        ///
+        bool empty() const
+        {
+            return begin() == end();
+        }
+
+        ///
+        /// Get the rule that is used for selection of this segment.
+        ///
+        rule_type rule() const
+        {
+            return rule_;
+        }
+        ///
+        /// Set a rule that is used for segment selection
+        ///
+        void rule(rule_type r)
+        {
+            rule_ = r;
+        }
+
+        // make sure we override std::pair's operator==
+
+        /// Compare two segments
+        bool operator==(segment const &other)
+        {
+            return details::compare_text(*this,other) == 0;
+        }
+
+        /// Compare two segments
+        bool operator!=(segment const &other)
+        {
+            return details::compare_text(*this,other) != 0;
+        }
+
+    private:
+        rule_type rule_;
+       
+    };
+
+   
+    /// Compare two segments
+    template<typename IteratorL,typename IteratorR>
+    bool operator==(segment<IteratorL> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) == 0; 
+    }
+    /// Compare two segments
+    template<typename IteratorL,typename IteratorR>
+    bool operator!=(segment<IteratorL> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) != 0; 
+    }
+
+    /// Compare two segments
+    template<typename IteratorL,typename IteratorR>
+    bool operator<(segment<IteratorL> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) < 0; 
+    }
+    /// Compare two segments
+    template<typename IteratorL,typename IteratorR>
+    bool operator<=(segment<IteratorL> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) <= 0; 
+    }
+    /// Compare two segments
+    template<typename IteratorL,typename IteratorR>
+    bool operator>(segment<IteratorL> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) > 0; 
+    }
+    /// Compare two segments
+    template<typename IteratorL,typename IteratorR>
+    bool operator>=(segment<IteratorL> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) >= 0; 
+    }
+
+    /// Compare string and segment
+    template<typename CharType,typename Traits,typename Alloc,typename IteratorR>
+    bool operator==(std::basic_string<CharType,Traits,Alloc> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) == 0; 
+    }
+    /// Compare string and segment
+    template<typename CharType,typename Traits,typename Alloc,typename IteratorR>
+    bool operator!=(std::basic_string<CharType,Traits,Alloc> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) != 0; 
+    }
+
+    /// Compare string and segment
+    template<typename CharType,typename Traits,typename Alloc,typename IteratorR>
+    bool operator<(std::basic_string<CharType,Traits,Alloc> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) < 0; 
+    }
+    /// Compare string and segment
+    template<typename CharType,typename Traits,typename Alloc,typename IteratorR>
+    bool operator<=(std::basic_string<CharType,Traits,Alloc> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) <= 0; 
+    }
+    /// Compare string and segment
+    template<typename CharType,typename Traits,typename Alloc,typename IteratorR>
+    bool operator>(std::basic_string<CharType,Traits,Alloc> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) > 0; 
+    }
+    /// Compare string and segment
+    template<typename CharType,typename Traits,typename Alloc,typename IteratorR>
+    bool operator>=(std::basic_string<CharType,Traits,Alloc> const &l,segment<IteratorR> const &r)
+    {
+        return details::compare_text(l,r) >= 0; 
+    }
+
+    /// Compare string and segment
+    template<typename Iterator,typename CharType,typename Traits,typename Alloc>
+    bool operator==(segment<Iterator> const &l,std::basic_string<CharType,Traits,Alloc> const &r)
+    {
+        return details::compare_text(l,r) == 0; 
+    }
+    /// Compare string and segment
+    template<typename Iterator,typename CharType,typename Traits,typename Alloc>
+    bool operator!=(segment<Iterator> const &l,std::basic_string<CharType,Traits,Alloc> const &r)
+    {
+        return details::compare_text(l,r) != 0; 
+    }
+
+    /// Compare string and segment
+    template<typename Iterator,typename CharType,typename Traits,typename Alloc>
+    bool operator<(segment<Iterator> const &l,std::basic_string<CharType,Traits,Alloc> const &r)
+    {
+        return details::compare_text(l,r) < 0; 
+    }
+    /// Compare string and segment
+    template<typename Iterator,typename CharType,typename Traits,typename Alloc>
+    bool operator<=(segment<Iterator> const &l,std::basic_string<CharType,Traits,Alloc> const &r)
+    {
+        return details::compare_text(l,r) <= 0; 
+    }
+    /// Compare string and segment
+    template<typename Iterator,typename CharType,typename Traits,typename Alloc>
+    bool operator>(segment<Iterator> const &l,std::basic_string<CharType,Traits,Alloc> const &r)
+    {
+        return details::compare_text(l,r) > 0; 
+    }
+    /// Compare string and segment
+    template<typename Iterator,typename CharType,typename Traits,typename Alloc>
+    bool operator>=(segment<Iterator> const &l,std::basic_string<CharType,Traits,Alloc> const &r)
+    {
+        return details::compare_text(l,r) >= 0; 
+    }
+
+
+    /// Compare C string and segment
+    template<typename CharType,typename IteratorR>
+    bool operator==(CharType const *l,segment<IteratorR> const &r)
+    {
+        return details::compare_string(l,r) == 0; 
+    }
+    /// Compare C string and segment
+    template<typename CharType,typename IteratorR>
+    bool operator!=(CharType const *l,segment<IteratorR> const &r)
+    {
+        return details::compare_string(l,r) != 0; 
+    }
+
+    /// Compare C string and segment
+    template<typename CharType,typename IteratorR>
+    bool operator<(CharType const *l,segment<IteratorR> const &r)
+    {
+        return details::compare_string(l,r) < 0; 
+    }
+    /// Compare C string and segment
+    template<typename CharType,typename IteratorR>
+    bool operator<=(CharType const *l,segment<IteratorR> const &r)
+    {
+        return details::compare_string(l,r) <= 0; 
+    }
+    /// Compare C string and segment
+    template<typename CharType,typename IteratorR>
+    bool operator>(CharType const *l,segment<IteratorR> const &r)
+    {
+        return details::compare_string(l,r) > 0; 
+    }
+    /// Compare C string and segment
+    template<typename CharType,typename IteratorR>
+    bool operator>=(CharType const *l,segment<IteratorR> const &r)
+    {
+        return details::compare_string(l,r) >= 0; 
+    }
+
+    /// Compare C string and segment
+    template<typename Iterator,typename CharType>
+    bool operator==(segment<Iterator> const &l,CharType const *r)
+    {
+        return details::compare_string(l,r) == 0; 
+    }
+    /// Compare C string and segment
+    template<typename Iterator,typename CharType>
+    bool operator!=(segment<Iterator> const &l,CharType const *r)
+    {
+        return details::compare_string(l,r) != 0; 
+    }
+
+    /// Compare C string and segment
+    template<typename Iterator,typename CharType>
+    bool operator<(segment<Iterator> const &l,CharType const *r)
+    {
+        return details::compare_string(l,r) < 0; 
+    }
+    /// Compare C string and segment
+    template<typename Iterator,typename CharType>
+    bool operator<=(segment<Iterator> const &l,CharType const *r)
+    {
+        return details::compare_string(l,r) <= 0; 
+    }
+    /// Compare C string and segment
+    template<typename Iterator,typename CharType>
+    bool operator>(segment<Iterator> const &l,CharType const *r)
+    {
+        return details::compare_string(l,r) > 0; 
+    }
+    /// Compare C string and segment
+    template<typename Iterator,typename CharType>
+    bool operator>=(segment<Iterator> const &l,CharType const *r)
+    {
+        return details::compare_string(l,r) >= 0; 
+    }
+
+
+
+
+
+
+    typedef segment<std::string::const_iterator> ssegment;      ///< convenience typedef
+    typedef segment<std::wstring::const_iterator> wssegment;    ///< convenience typedef
+    #ifdef BOOST_HAS_CHAR16_T
+    typedef segment<std::u16string::const_iterator> u16ssegment;///< convenience typedef
+    #endif
+    #ifdef BOOST_HAS_CHAR32_T
+    typedef segment<std::u32string::const_iterator> u32ssegment;///< convenience typedef
+    #endif
+   
+    typedef segment<char const *> csegment;                     ///< convenience typedef
+    typedef segment<wchar_t const *> wcsegment;                 ///< convenience typedef
+    #ifdef BOOST_HAS_CHAR16_T
+    typedef segment<char16_t const *> u16csegment;              ///< convenience typedef
+    #endif
+    #ifdef BOOST_HAS_CHAR32_T
+    typedef segment<char32_t const *> u32csegment;              ///< convenience typedef
+    #endif
+
+
+
+ 
+    
+    ///
+    /// Write the segment to the stream character by character
+    ///
+    template<typename CharType,typename TraitsType,typename Iterator>
+    std::basic_ostream<CharType,TraitsType> &operator<<(
+            std::basic_ostream<CharType,TraitsType> &out,
+            segment<Iterator> const &tok)
+    {
+        for(Iterator p=tok.begin(),e=tok.end();p!=e;++p)
+            out << *p;
+        return out;
+    }
+
+    /// @}
+
+} // boundary
+} // locale
+} // boost
+
+#ifdef BOOST_MSVC
+#pragma warning(pop)
+#endif
+
+#endif
+
+// vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4