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Diffstat (limited to '3rdParty/Boost/boost/date_time/special_values_parser.hpp')
-rw-r--r-- | 3rdParty/Boost/boost/date_time/special_values_parser.hpp | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/3rdParty/Boost/boost/date_time/special_values_parser.hpp b/3rdParty/Boost/boost/date_time/special_values_parser.hpp new file mode 100644 index 0000000..e48ec5f --- /dev/null +++ b/3rdParty/Boost/boost/date_time/special_values_parser.hpp @@ -0,0 +1,159 @@ + +#ifndef DATE_TIME_SPECIAL_VALUES_PARSER_HPP__ +#define DATE_TIME_SPECIAL_VALUES_PARSER_HPP__ + +/* Copyright (c) 2005 CrystalClear Software, Inc. + * Use, modification and distribution is subject to the + * Boost Software License, Version 1.0. (See accompanying + * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt) + * Author: Jeff Garland, Bart Garst + * $Date: + */ + + +#include "boost/date_time/string_parse_tree.hpp" +#include "boost/date_time/special_defs.hpp" +#include <string> +#include <vector> + +namespace boost { namespace date_time { + + //! Class for special_value parsing + /*! + * TODO: add doc-comments for which elements can be changed + * Parses input stream for strings representing special_values. + * Special values parsed are: + * - not_a_date_time + * - neg_infin + * - pod_infin + * - min_date_time + * - max_date_time + */ + template<class date_type, typename charT> + class special_values_parser + { + public: + typedef std::basic_string<charT> string_type; + //typedef std::basic_stringstream<charT> stringstream_type; + typedef std::istreambuf_iterator<charT> stream_itr_type; + //typedef typename string_type::const_iterator const_itr; + //typedef typename date_type::year_type year_type; + //typedef typename date_type::month_type month_type; + typedef typename date_type::duration_type duration_type; + //typedef typename date_type::day_of_week_type day_of_week_type; + //typedef typename date_type::day_type day_type; + typedef string_parse_tree<charT> parse_tree_type; + typedef typename parse_tree_type::parse_match_result_type match_results; + typedef std::vector<std::basic_string<charT> > collection_type; + + typedef charT char_type; + static const char_type nadt_string[16]; + static const char_type neg_inf_string[10]; + static const char_type pos_inf_string[10]; + static const char_type min_date_time_string[18]; + static const char_type max_date_time_string[18]; + + //! Creates a special_values_parser with the default set of "sv_strings" + special_values_parser() + { + sv_strings(string_type(nadt_string), + string_type(neg_inf_string), + string_type(pos_inf_string), + string_type(min_date_time_string), + string_type(max_date_time_string)); + } + + //! Creates a special_values_parser using a user defined set of element strings + special_values_parser(const string_type& nadt_str, + const string_type& neg_inf_str, + const string_type& pos_inf_str, + const string_type& min_dt_str, + const string_type& max_dt_str) + { + sv_strings(nadt_str, neg_inf_str, pos_inf_str, min_dt_str, max_dt_str); + } + + special_values_parser(typename collection_type::iterator beg, typename collection_type::iterator end) + { + collection_type phrases; + std::copy(beg, end, std::back_inserter(phrases)); + m_sv_strings = parse_tree_type(phrases, static_cast<int>(not_a_date_time)); + } + + special_values_parser(const special_values_parser<date_type,charT>& svp) + { + this->m_sv_strings = svp.m_sv_strings; + } + + //! Replace special value strings + void sv_strings(const string_type& nadt_str, + const string_type& neg_inf_str, + const string_type& pos_inf_str, + const string_type& min_dt_str, + const string_type& max_dt_str) + { + collection_type phrases; + phrases.push_back(nadt_str); + phrases.push_back(neg_inf_str); + phrases.push_back(pos_inf_str); + phrases.push_back(min_dt_str); + phrases.push_back(max_dt_str); + m_sv_strings = parse_tree_type(phrases, static_cast<int>(not_a_date_time)); + } + + /* Does not return a special_value because if the parsing fails, + * the return value will always be not_a_date_time + * (mr.current_match retains its default value of -1 on a failed + * parse and that casts to not_a_date_time). */ + //! Sets match_results.current_match to the corresponding special_value or -1 + bool match(stream_itr_type& sitr, + stream_itr_type& str_end, + match_results& mr) const + { + unsigned int level = 0; + m_sv_strings.match(sitr, str_end, mr, level); + return (mr.current_match != match_results::PARSE_ERROR); + } + /*special_values match(stream_itr_type& sitr, + stream_itr_type& str_end, + match_results& mr) const + { + unsigned int level = 0; + m_sv_strings.match(sitr, str_end, mr, level); + if(mr.current_match == match_results::PARSE_ERROR) { + throw std::ios_base::failure("Parse failed. No match found for '" + mr.cache + "'"); + } + return static_cast<special_values>(mr.current_match); + }*/ + + + private: + parse_tree_type m_sv_strings; + + }; + + template<class date_type, class CharT> + const typename special_values_parser<date_type, CharT>::char_type + special_values_parser<date_type, CharT>::nadt_string[16] = + {'n','o','t','-','a','-','d','a','t','e','-','t','i','m','e'}; + template<class date_type, class CharT> + const typename special_values_parser<date_type, CharT>::char_type + special_values_parser<date_type, CharT>::neg_inf_string[10] = + {'-','i','n','f','i','n','i','t','y'}; + template<class date_type, class CharT> + const typename special_values_parser<date_type, CharT>::char_type + special_values_parser<date_type, CharT>::pos_inf_string[10] = + {'+','i','n','f','i','n','i','t','y'}; + template<class date_type, class CharT> + const typename special_values_parser<date_type, CharT>::char_type + special_values_parser<date_type, CharT>::min_date_time_string[18] = + {'m','i','n','i','m','u','m','-','d','a','t','e','-','t','i','m','e'}; + template<class date_type, class CharT> + const typename special_values_parser<date_type, CharT>::char_type + special_values_parser<date_type, CharT>::max_date_time_string[18] = + {'m','a','x','i','m','u','m','-','d','a','t','e','-','t','i','m','e'}; + +} } //namespace + +#endif // DATE_TIME_SPECIAL_VALUES_PARSER_HPP__ + |