ceph/src/boost/libs/spirit/include/boost/spirit/home/classic/symbols/impl/symbols.ipp

   1 /*=============================================================================
   2     Copyright (c) 2001-2003 Joel de Guzman
   3     http://spirit.sourceforge.net/
   4
   5     Use, modification and distribution is subject to the Boost Software
   6     License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   7     http://www.boost.org/LICENSE_1_0.txt)
   8 =============================================================================*/
   9 #ifndef BOOST_SPIRIT_SYMBOLS_IPP
  10 #define BOOST_SPIRIT_SYMBOLS_IPP
  11
  12 ///////////////////////////////////////////////////////////////////////////////
  13 #include <boost/spirit/home/classic/symbols/impl/tst.ipp>
  14 #include <boost/detail/workaround.hpp>
  15
  16 // MSVC: void warning about the use of 'this' pointer in constructors
  17 #if defined(BOOST_MSVC)
  18 #pragma warning(push)
  19 #pragma warning(disable : 4355)
  20 #endif
  21
  22 ///////////////////////////////////////////////////////////////////////////////
  23 namespace boost { namespace spirit {
  24
  25 BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
  26
  27 ///////////////////////////////////////////////////////////////////////////////
  28 //
  29 //  symbols class implementation
  30 //
  31 ///////////////////////////////////////////////////////////////////////////////
  32 template <typename T, typename CharT, typename SetT>
  33 inline symbols<T, CharT, SetT>::symbols()
  34 : SetT()
  35 , add(*this)
  36 {
  37 }
  38
  39 //////////////////////////////////
  40 template <typename T, typename CharT, typename SetT>
  41 symbols<T, CharT, SetT>::symbols(symbols const& other)
  42 : SetT(other)
  43 // Tru64 CXX seems to be confused by the explicit call of the default
  44 // constructor and generates wrong code which invalidates the just contructed
  45 // first base class in the line above.
  46 #if !BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590041))
  47 , parser<symbols<T, CharT, SetT> >()
  48 #endif
  49 , add(*this)
  50 {
  51 }
  52
  53 //////////////////////////////////
  54 template <typename T, typename CharT, typename SetT>
  55 inline symbols<T, CharT, SetT>::~symbols()
  56 {}
  57
  58 //////////////////////////////////
  59 template <typename T, typename CharT, typename SetT>
  60 inline symbols<T, CharT, SetT>&
  61 symbols<T, CharT, SetT>::operator=(symbols const& other)
  62 {
  63     SetT::operator=(other);
  64     return *this;
  65 }
  66
  67 //////////////////////////////////
  68 template <typename T, typename CharT, typename SetT>
  69 inline symbol_inserter<T, SetT> const&
  70 symbols<T, CharT, SetT>::operator=(CharT const* str)
  71 {
  72     return add, str;
  73 }
  74
  75 ///////////////////////////////////////////////////////////////////////////////
  76 //
  77 //  Symbol table utilities
  78 //
  79 ///////////////////////////////////////////////////////////////////////////////
  80 template <typename T, typename CharT, typename SetT>
  81 inline T*
  82 find(symbols<T, CharT, SetT> const& table, CharT const* sym)
  83 {
  84     CharT const* last = sym;
  85     while (*last)
  86         last++;
  87     scanner<CharT const *> scan(sym, last);
  88     T* result = table.find(scan);
  89     return scan.at_end()? result: 0;
  90 }
  91
  92 //////////////////////////////////
  93 template <typename T, typename CharT, typename SetT>
  94 inline T*
  95 add(symbols<T, CharT, SetT>& table, CharT const* sym, T const& data)
  96 {
  97     CharT const* first = sym;
  98     CharT const* last = sym;
  99     while (*last)
 100         last++;
 101     scanner<CharT const *> scan(first, last);
 102     if (table.find(scan) && scan.at_end())
 103         return 0;               // symbol already contained in symbol table
 104     table.add(sym, last, data);
 105     first = sym;
 106     return table.find(scan);    // refind the inserted symbol
 107 }
 108
 109 ///////////////////////////////////////////////////////////////////////////////
 110 BOOST_SPIRIT_CLASSIC_NAMESPACE_END
 111
 112 }} // namespace boost::spirit
 113
 114 #if defined(BOOST_MSVC)
 115 #pragma warning(pop)
 116 #endif
 117
 118 #endif