/*=============================================================================
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Copyright (c) 2001-2003 Joel de Guzman
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http://spirit.sourceforge.net/
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Use, modification and distribution is subject to the Boost Software
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License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
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http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef BOOST_SPIRIT_SYMBOLS_IPP
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#define BOOST_SPIRIT_SYMBOLS_IPP
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///////////////////////////////////////////////////////////////////////////////
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#include <boost/spirit/home/classic/symbols/impl/tst.ipp>
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#include <boost/detail/workaround.hpp>
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// MSVC: void warning about the use of 'this' pointer in constructors
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#if defined(BOOST_MSVC)
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#pragma warning(push)
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#pragma warning(disable : 4355)
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#endif
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///////////////////////////////////////////////////////////////////////////////
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namespace boost { namespace spirit {
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BOOST_SPIRIT_CLASSIC_NAMESPACE_BEGIN
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///////////////////////////////////////////////////////////////////////////////
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//
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// symbols class implementation
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//
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///////////////////////////////////////////////////////////////////////////////
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template <typename T, typename CharT, typename SetT>
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inline symbols<T, CharT, SetT>::symbols()
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: SetT()
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, add(*this)
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{
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}
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//////////////////////////////////
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template <typename T, typename CharT, typename SetT>
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symbols<T, CharT, SetT>::symbols(symbols const& other)
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: SetT(other)
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// Tru64 CXX seems to be confused by the explicit call of the default
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// constructor and generates wrong code which invalidates the just contructed
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// first base class in the line above.
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#if !BOOST_WORKAROUND(__DECCXX_VER, BOOST_TESTED_AT(60590041))
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, parser<symbols<T, CharT, SetT> >()
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#endif
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, add(*this)
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{
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}
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//////////////////////////////////
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template <typename T, typename CharT, typename SetT>
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inline symbols<T, CharT, SetT>::~symbols()
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{}
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//////////////////////////////////
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template <typename T, typename CharT, typename SetT>
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inline symbols<T, CharT, SetT>&
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symbols<T, CharT, SetT>::operator=(symbols const& other)
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{
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SetT::operator=(other);
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return *this;
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}
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//////////////////////////////////
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template <typename T, typename CharT, typename SetT>
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inline symbol_inserter<T, SetT> const&
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symbols<T, CharT, SetT>::operator=(CharT const* str)
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{
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return add, str;
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}
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///////////////////////////////////////////////////////////////////////////////
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//
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// Symbol table utilities
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//
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///////////////////////////////////////////////////////////////////////////////
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template <typename T, typename CharT, typename SetT>
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inline T*
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find(symbols<T, CharT, SetT> const& table, CharT const* sym)
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{
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CharT const* last = sym;
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while (*last)
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last++;
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scanner<CharT const *> scan(sym, last);
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T* result = table.find(scan);
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return scan.at_end()? result: 0;
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}
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//////////////////////////////////
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template <typename T, typename CharT, typename SetT>
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inline T*
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add(symbols<T, CharT, SetT>& table, CharT const* sym, T const& data)
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{
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CharT const* first = sym;
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CharT const* last = sym;
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while (*last)
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last++;
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scanner<CharT const *> scan(first, last);
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if (table.find(scan) && scan.at_end())
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return 0; // symbol already contained in symbol table
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table.add(sym, last, data);
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first = sym;
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return table.find(scan); // refind the inserted symbol
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}
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///////////////////////////////////////////////////////////////////////////////
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BOOST_SPIRIT_CLASSIC_NAMESPACE_END
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}} // namespace boost::spirit
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#if defined(BOOST_MSVC)
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#pragma warning(pop)
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#endif
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#endif
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