ceph/src/boost/boost/spirit/home/karma/detail/string_compare.hpp

   1 //  Copyright (c) 2001-2011 Hartmut Kaiser
   2 //
   3 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 #if !defined(BOOST_SPIRIT_KARMA_STRING_COMPARE_AUG_08_2009_0756PM)
   7 #define BOOST_SPIRIT_KARMA_STRING_COMPARE_AUG_08_2009_0756PM
   8
   9 #if defined(_MSC_VER)
  10 #pragma once
  11 #endif
  12
  13 #include <string>
  14 #include <boost/spirit/home/support/char_class.hpp>
  15 #include <boost/spirit/home/karma/detail/generate_to.hpp>
  16 #include <boost/range/iterator_range.hpp>
  17
  18 namespace boost { namespace spirit { namespace karma { namespace detail
  19 {
  20     template <typename Char>
  21     bool string_compare(Char const* attr, Char const* lit)
  22     {
  23         Char ch_attr = *attr;
  24         Char ch_lit = *lit;
  25
  26         while (!!ch_lit && !!ch_attr)
  27         {
  28             if (ch_attr != ch_lit)
  29                 return false;
  30
  31             ch_attr = *++attr;
  32             ch_lit = *++lit;
  33         }
  34
  35         return !ch_lit && !ch_attr;
  36     }
  37
  38     template <typename Char>
  39     bool string_compare(Char const* attr, Char const* lit, unused_type, unused_type)
  40     {
  41         return string_compare(attr, lit);
  42     }
  43
  44     template <typename Char>
  45     bool string_compare(unused_type, Char const*, unused_type, unused_type)
  46     {
  47         return true;
  48     }
  49
  50     template <typename Char, typename CharEncoding, typename Tag>
  51     bool string_compare(Char const* attr, Char const* lit, CharEncoding, Tag)
  52     {
  53         Char ch_attr = *attr;
  54         Char ch_lit = spirit::char_class::convert<CharEncoding>::to(Tag(), *lit);
  55
  56         while (!!ch_lit && !!ch_attr)
  57         {
  58             if (ch_attr != ch_lit)
  59                 return false;
  60
  61             ch_attr = *++attr;
  62             ch_lit = spirit::char_class::convert<CharEncoding>::to(Tag(), *++lit);
  63         }
  64
  65         return !ch_lit && !ch_attr;
  66     }
  67
  68     template <typename Char, typename CharEncoding, typename Tag>
  69     bool string_compare(unused_type, Char const*, CharEncoding, Tag)
  70     {
  71         return true;
  72     }
  73
  74 }}}}
  75
  76 #endif