Chris@16: /*=============================================================================
Chris@16:     Boost.Wave: A Standard compliant C++ preprocessor library
Chris@16: 
Chris@16:     Definition of the position_iterator and file_position templates
Chris@16:     
Chris@16:     http://www.boost.org/
Chris@16: 
Chris@16:     Copyright (c) 2001-2012 Hartmut Kaiser. Distributed under the Boost
Chris@16:     Software License, Version 1.0. (See accompanying file
Chris@16:     LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
Chris@16: =============================================================================*/
Chris@16: 
Chris@16: #if !defined(FILE_POSITION_H_52BDEDF7_DAD3_4F24_802F_E66BB8098F68_INCLUDED)
Chris@16: #define FILE_POSITION_H_52BDEDF7_DAD3_4F24_802F_E66BB8098F68_INCLUDED
Chris@16: 
Chris@16: #include <string>
Chris@16: #include <ostream>
Chris@16: 
Chris@16: #include <boost/assert.hpp>
Chris@16: #include <boost/spirit/include/classic_version.hpp>
Chris@16: #include <boost/spirit/include/classic_position_iterator.hpp>
Chris@16: #include <boost/wave/wave_config.hpp>
Chris@16: #if BOOST_WAVE_SERIALIZATION != 0
Chris@16: #include <boost/serialization/serialization.hpp>
Chris@16: #endif
Chris@16: 
Chris@16: // this must occur after all of the includes and before any code appears
Chris@16: #ifdef BOOST_HAS_ABI_HEADERS
Chris@16: #include BOOST_ABI_PREFIX
Chris@16: #endif
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: namespace boost {
Chris@16: namespace wave {
Chris@16: namespace util {
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: //
Chris@16: //  file_position
Chris@16: //
Chris@16: //  A structure to hold positional information. This includes the filename,
Chris@16: //  line number and column number of a current token position.
Chris@16: //
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: 
Chris@16: template <typename StringT>
Chris@16: struct file_position {
Chris@16: 
Chris@16: public:
Chris@16:     typedef StringT string_type;
Chris@16: 
Chris@16:     file_position()
Chris@16:     :   file(), line(1), column(1)
Chris@16:     {}
Chris@16:     explicit file_position(string_type const& file_, std::size_t line_ = 1, 
Chris@16:             std::size_t column_ = 1)
Chris@16:     :   file(file_), line(line_), column(column_)
Chris@16:     {}
Chris@16: 
Chris@16: // accessors
Chris@16:     string_type const &get_file() const { return file; }
Chris@16:     std::size_t get_line() const { return line; }
Chris@16:     std::size_t get_column() const { return column; }
Chris@16: 
Chris@16:     void set_file(string_type const &file_) 
Chris@16:     { 
Chris@16:         file = file_; 
Chris@16:     }
Chris@16:     void set_line(std::size_t line_) { line = line_; }
Chris@16:     void set_column(std::size_t column_) { column = column_; }
Chris@16: 
Chris@16: private:
Chris@16: #if BOOST_WAVE_SERIALIZATION != 0
Chris@16:     friend class boost::serialization::access;
Chris@16:     template<typename Archive>
Chris@16:     void serialize(Archive &ar, const unsigned int version)
Chris@16:     {
Chris@16:         using namespace boost::serialization;
Chris@16:         ar & make_nvp("filename", file);
Chris@16:         ar & make_nvp("line", line);
Chris@16:         ar & make_nvp("column", column);
Chris@16:     }
Chris@16: #endif
Chris@16: 
Chris@16:     string_type file;
Chris@16:     std::size_t line;
Chris@16:     std::size_t column;
Chris@16: };
Chris@16: 
Chris@16: template <typename StringT>
Chris@16: bool operator== (file_position<StringT> const &lhs, 
Chris@16:     file_position<StringT> const &rhs)
Chris@16: {
Chris@16:     return lhs.get_column() == rhs.get_column() && 
Chris@16:         lhs.get_line() == rhs.get_line() && lhs.get_file() == rhs.get_file();
Chris@16: }
Chris@16: 
Chris@16: template <typename StringT>
Chris@16: inline std::ostream &
Chris@16: operator<< (std::ostream &o, file_position<StringT> const &pos)
Chris@16: {
Chris@16:     o << pos.get_file() << ":" << pos.get_line() << ":"  << pos.get_column();
Chris@16:     return o;
Chris@16: }
Chris@16: 
Chris@16: typedef file_position<BOOST_WAVE_STRINGTYPE> file_position_type;
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: //
Chris@16: //  position_iterator
Chris@16: //
Chris@16: //  The position_iterator used by Wave is now based on the corresponding Spirit 
Chris@16: //  type. This type is used with our own file_position though. The needed
Chris@16: //  specialization of the boost::spirit::classic::position_policy class is 
Chris@16: //  provided below.
Chris@16: //
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: 
Chris@16: template <typename IteratorT, typename PositionT>
Chris@16: struct position_iterator 
Chris@16: :   boost::spirit::classic::position_iterator<IteratorT, PositionT>
Chris@16: {
Chris@16:     typedef boost::spirit::classic::position_iterator<IteratorT, PositionT> base_type;
Chris@16: 
Chris@16:     position_iterator()
Chris@16:     {
Chris@16:     }
Chris@16: 
Chris@16:     position_iterator(IteratorT const &begin, IteratorT const &end,
Chris@16:             PositionT const &pos)
Chris@16:     :   base_type(begin, end, pos)
Chris@16:     {
Chris@16:     }
Chris@16: };
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: }   // namespace util
Chris@16: }   // namespace wave
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: 
Chris@16: namespace spirit { namespace classic {
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: //
Chris@16: //  The boost::spirit::classic::position_policy has to be specialized for our 
Chris@16: //  file_position class
Chris@16: //
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: 
Chris@16:     template <>
Chris@16:     class position_policy<boost::wave::util::file_position_type> {
Chris@16: 
Chris@16:     public:
Chris@16:         position_policy()
Chris@16:             : m_CharsPerTab(4)
Chris@16:         {}
Chris@16: 
Chris@16:         void next_line(boost::wave::util::file_position_type &pos)
Chris@16:         {
Chris@16:             pos.set_line(pos.get_line() + 1);
Chris@16:             pos.set_column(1);
Chris@16:         }
Chris@16: 
Chris@16:         void set_tab_chars(unsigned int chars)
Chris@16:         {
Chris@16:             m_CharsPerTab = chars;
Chris@16:         }
Chris@16: 
Chris@16:         void next_char(boost::wave::util::file_position_type &pos)
Chris@16:         {
Chris@16:             pos.set_column(pos.get_column() + 1);
Chris@16:         }
Chris@16: 
Chris@16:         void tabulation(boost::wave::util::file_position_type &pos)   
Chris@16:         {
Chris@16:             pos.set_column(pos.get_column() + m_CharsPerTab - 
Chris@16:                 (pos.get_column() - 1) % m_CharsPerTab);
Chris@16:         }
Chris@16: 
Chris@16:     private:
Chris@16:         unsigned int m_CharsPerTab;
Chris@16:     };
Chris@16: 
Chris@16: ///////////////////////////////////////////////////////////////////////////////
Chris@16: }}   // namespace spirit::classic
Chris@16: 
Chris@16: }   // namespace boost 
Chris@16: 
Chris@16: // the suffix header occurs after all of the code
Chris@16: #ifdef BOOST_HAS_ABI_HEADERS
Chris@16: #include BOOST_ABI_SUFFIX
Chris@16: #endif
Chris@16: 
Chris@16: #endif // !defined(FILE_POSITION_H_52BDEDF7_DAD3_4F24_802F_E66BB8098F68_INCLUDED)