346 lines
12 KiB
C++
346 lines
12 KiB
C++
/*
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* Copyright Andrey Semashev 2007 - 2015.
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* Distributed under the Boost Software License, Version 1.0.
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* (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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/*!
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* \file formatters/date_time.hpp
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* \author Andrey Semashev
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* \date 16.09.2012
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*
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* The header contains a formatter function for date and time attribute values.
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*/
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#ifndef BOOST_LOG_EXPRESSIONS_FORMATTERS_DATE_TIME_HPP_INCLUDED_
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#define BOOST_LOG_EXPRESSIONS_FORMATTERS_DATE_TIME_HPP_INCLUDED_
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#include <string>
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#include <boost/move/core.hpp>
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#include <boost/move/utility_core.hpp>
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#include <boost/phoenix/core/actor.hpp>
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#include <boost/phoenix/core/terminal_fwd.hpp>
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#include <boost/phoenix/core/is_nullary.hpp>
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#include <boost/phoenix/core/environment.hpp>
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#include <boost/fusion/sequence/intrinsic/at_c.hpp>
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#include <boost/log/detail/config.hpp>
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#include <boost/log/attributes/attribute_name.hpp>
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#include <boost/log/attributes/fallback_policy.hpp>
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#include <boost/log/attributes/value_visitation.hpp>
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#include <boost/log/detail/light_function.hpp>
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#include <boost/log/detail/date_time_fmt_gen_traits_fwd.hpp>
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#include <boost/log/detail/custom_terminal_spec.hpp>
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#include <boost/log/detail/attr_output_terminal.hpp>
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#include <boost/log/expressions/attr_fwd.hpp>
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#include <boost/log/expressions/keyword_fwd.hpp>
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#include <boost/log/utility/formatting_ostream.hpp>
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#include <boost/log/utility/functional/bind.hpp>
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#include <boost/log/detail/header.hpp>
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#ifdef BOOST_HAS_PRAGMA_ONCE
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#pragma once
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#endif
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namespace boost {
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BOOST_LOG_OPEN_NAMESPACE
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namespace expressions {
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/*!
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* Date and time formatter terminal.
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*/
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template< typename T, typename FallbackPolicyT, typename CharT >
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class format_date_time_terminal
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{
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public:
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#ifndef BOOST_LOG_DOXYGEN_PASS
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//! Internal typedef for type categorization
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typedef void _is_boost_log_terminal;
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#endif
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//! Attribute value type
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typedef T value_type;
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//! Fallback policy
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typedef FallbackPolicyT fallback_policy;
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//! Character type
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typedef CharT char_type;
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//! String type
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typedef std::basic_string< char_type > string_type;
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//! Formatting stream type
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typedef basic_formatting_ostream< char_type > stream_type;
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//! Formatter function
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typedef boost::log::aux::light_function< void (stream_type&, value_type const&) > formatter_function_type;
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//! Function result type
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typedef string_type result_type;
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private:
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//! Formatter generator traits
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typedef aux::date_time_formatter_generator_traits< value_type, char_type > formatter_generator;
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//! Attribute value visitor invoker
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typedef value_visitor_invoker< value_type, fallback_policy > visitor_invoker_type;
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private:
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//! Attribute name
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attribute_name m_name;
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//! Formattr function
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formatter_function_type m_formatter;
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//! Attribute value visitor invoker
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visitor_invoker_type m_visitor_invoker;
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public:
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//! Initializing constructor
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format_date_time_terminal(attribute_name const& name, fallback_policy const& fallback, string_type const& format) :
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m_name(name), m_formatter(formatter_generator::parse(format)), m_visitor_invoker(fallback)
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{
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}
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//! Copy constructor
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format_date_time_terminal(format_date_time_terminal const& that) :
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m_name(that.m_name), m_formatter(that.m_formatter), m_visitor_invoker(that.m_visitor_invoker)
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{
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}
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//! Returns attribute name
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attribute_name get_name() const
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{
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return m_name;
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}
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//! Returns fallback policy
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fallback_policy const& get_fallback_policy() const
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{
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return m_visitor_invoker.get_fallback_policy();
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}
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//! Retruns formatter function
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formatter_function_type const& get_formatter_function() const
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{
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return m_formatter;
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}
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//! Invokation operator
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template< typename ContextT >
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result_type operator() (ContextT const& ctx)
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{
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string_type str;
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stream_type strm(str);
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m_visitor_invoker(m_name, fusion::at_c< 0 >(phoenix::env(ctx).args()), binder1st< formatter_function_type&, stream_type& >(m_formatter, strm));
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strm.flush();
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return BOOST_LOG_NRVO_RESULT(str);
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}
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//! Invokation operator
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template< typename ContextT >
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result_type operator() (ContextT const& ctx) const
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{
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string_type str;
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stream_type strm(str);
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m_visitor_invoker(m_name, fusion::at_c< 0 >(phoenix::env(ctx).args()), binder1st< formatter_function_type const&, stream_type& >(m_formatter, strm));
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strm.flush();
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return BOOST_LOG_NRVO_RESULT(str);
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}
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BOOST_DELETED_FUNCTION(format_date_time_terminal())
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};
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/*!
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* Date and time formatter actor.
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*/
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template< typename T, typename FallbackPolicyT, typename CharT, template< typename > class ActorT = phoenix::actor >
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class format_date_time_actor :
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public ActorT< format_date_time_terminal< T, FallbackPolicyT, CharT > >
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{
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public:
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//! Attribute value type
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typedef T value_type;
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//! Character type
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typedef CharT char_type;
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//! Fallback policy
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typedef FallbackPolicyT fallback_policy;
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//! Base terminal type
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typedef format_date_time_terminal< value_type, fallback_policy, char_type > terminal_type;
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//! Formatter function
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typedef typename terminal_type::formatter_function_type formatter_function_type;
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//! Base actor type
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typedef ActorT< terminal_type > base_type;
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public:
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//! Initializing constructor
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explicit format_date_time_actor(base_type const& act) : base_type(act)
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{
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}
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/*!
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* \returns The attribute name
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*/
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attribute_name get_name() const
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{
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return this->proto_expr_.child0.get_name();
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}
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/*!
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* \returns Fallback policy
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*/
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fallback_policy const& get_fallback_policy() const
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{
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return this->proto_expr_.child0.get_fallback_policy();
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}
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/*!
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* \returns Formatter function
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*/
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formatter_function_type const& get_formatter_function() const
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{
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return this->proto_expr_.child0.get_formatter_function();
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}
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};
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#ifndef BOOST_LOG_DOXYGEN_PASS
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#define BOOST_LOG_AUX_OVERLOAD(left_ref, right_ref)\
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template< typename LeftExprT, typename T, typename FallbackPolicyT, typename CharT >\
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BOOST_FORCEINLINE phoenix::actor< aux::attribute_output_terminal< phoenix::actor< LeftExprT >, T, FallbackPolicyT, typename format_date_time_actor< T, FallbackPolicyT, CharT >::formatter_function_type > >\
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operator<< (phoenix::actor< LeftExprT > left_ref left, format_date_time_actor< T, FallbackPolicyT, CharT > right_ref right)\
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{\
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typedef aux::attribute_output_terminal< phoenix::actor< LeftExprT >, T, FallbackPolicyT, typename format_date_time_actor< T, FallbackPolicyT, CharT >::formatter_function_type > terminal_type;\
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phoenix::actor< terminal_type > actor = {{ terminal_type(left, right.get_name(), right.get_formatter_function(), right.get_fallback_policy()) }};\
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return actor;\
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}
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#include <boost/log/detail/generate_overloads.hpp>
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#undef BOOST_LOG_AUX_OVERLOAD
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#endif // BOOST_LOG_DOXYGEN_PASS
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/*!
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* The function generates a manipulator node in a template expression. The manipulator must participate in a formatting
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* expression (stream output or \c format placeholder filler).
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*
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* \param name Attribute name
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* \param format Format string
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*/
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template< typename AttributeValueT, typename CharT >
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BOOST_FORCEINLINE format_date_time_actor< AttributeValueT, fallback_to_none, CharT > format_date_time(attribute_name const& name, const CharT* format)
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{
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typedef format_date_time_actor< AttributeValueT, fallback_to_none, CharT > actor_type;
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typedef typename actor_type::terminal_type terminal_type;
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typename actor_type::base_type act = {{ terminal_type(name, fallback_to_none(), format) }};
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return actor_type(act);
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}
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/*!
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* The function generates a manipulator node in a template expression. The manipulator must participate in a formatting
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* expression (stream output or \c format placeholder filler).
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*
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* \param name Attribute name
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* \param format Format string
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*/
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template< typename AttributeValueT, typename CharT >
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BOOST_FORCEINLINE format_date_time_actor< AttributeValueT, fallback_to_none, CharT > format_date_time(attribute_name const& name, std::basic_string< CharT > const& format)
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{
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typedef format_date_time_actor< AttributeValueT, fallback_to_none, CharT > actor_type;
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typedef typename actor_type::terminal_type terminal_type;
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typename actor_type::base_type act = {{ terminal_type(name, fallback_to_none(), format) }};
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return actor_type(act);
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}
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/*!
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* The function generates a manipulator node in a template expression. The manipulator must participate in a formatting
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* expression (stream output or \c format placeholder filler).
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*
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* \param keyword Attribute keyword
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* \param format Format string
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*/
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template< typename DescriptorT, template< typename > class ActorT, typename CharT >
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BOOST_FORCEINLINE format_date_time_actor< typename DescriptorT::value_type, fallback_to_none, CharT, ActorT >
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format_date_time(attribute_keyword< DescriptorT, ActorT > const& keyword, const CharT* format)
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{
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typedef format_date_time_actor< typename DescriptorT::value_type, fallback_to_none, CharT, ActorT > actor_type;
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typedef typename actor_type::terminal_type terminal_type;
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typename actor_type::base_type act = {{ terminal_type(keyword.get_name(), fallback_to_none(), format) }};
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return actor_type(act);
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}
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/*!
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* The function generates a manipulator node in a template expression. The manipulator must participate in a formatting
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* expression (stream output or \c format placeholder filler).
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*
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* \param keyword Attribute keyword
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* \param format Format string
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*/
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template< typename DescriptorT, template< typename > class ActorT, typename CharT >
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BOOST_FORCEINLINE format_date_time_actor< typename DescriptorT::value_type, fallback_to_none, CharT, ActorT >
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format_date_time(attribute_keyword< DescriptorT, ActorT > const& keyword, std::basic_string< CharT > const& format)
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{
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typedef format_date_time_actor< typename DescriptorT::value_type, fallback_to_none, CharT, ActorT > actor_type;
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typedef typename actor_type::terminal_type terminal_type;
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typename actor_type::base_type act = {{ terminal_type(keyword.get_name(), fallback_to_none(), format) }};
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return actor_type(act);
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}
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/*!
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* The function generates a manipulator node in a template expression. The manipulator must participate in a formatting
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* expression (stream output or \c format placeholder filler).
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*
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* \param placeholder Attribute placeholder
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* \param format Format string
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*/
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template< typename T, typename FallbackPolicyT, typename TagT, template< typename > class ActorT, typename CharT >
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BOOST_FORCEINLINE format_date_time_actor< T, FallbackPolicyT, CharT, ActorT >
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format_date_time(attribute_actor< T, FallbackPolicyT, TagT, ActorT > const& placeholder, const CharT* format)
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{
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typedef format_date_time_actor< T, FallbackPolicyT, CharT, ActorT > actor_type;
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typedef typename actor_type::terminal_type terminal_type;
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typename actor_type::base_type act = {{ terminal_type(placeholder.get_name(), placeholder.get_fallback_policy(), format) }};
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return actor_type(act);
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}
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/*!
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* The function generates a manipulator node in a template expression. The manipulator must participate in a formatting
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* expression (stream output or \c format placeholder filler).
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*
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* \param placeholder Attribute placeholder
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* \param format Format string
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*/
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template< typename T, typename FallbackPolicyT, typename TagT, template< typename > class ActorT, typename CharT >
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BOOST_FORCEINLINE format_date_time_actor< T, FallbackPolicyT, CharT, ActorT >
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format_date_time(attribute_actor< T, FallbackPolicyT, TagT, ActorT > const& placeholder, std::basic_string< CharT > const& format)
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{
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typedef format_date_time_actor< T, FallbackPolicyT, CharT, ActorT > actor_type;
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typedef typename actor_type::terminal_type terminal_type;
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typename actor_type::base_type act = {{ terminal_type(placeholder.get_name(), placeholder.get_fallback_policy(), format) }};
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return actor_type(act);
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}
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} // namespace expressions
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BOOST_LOG_CLOSE_NAMESPACE // namespace log
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#ifndef BOOST_LOG_DOXYGEN_PASS
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namespace phoenix {
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namespace result_of {
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template< typename T, typename FallbackPolicyT, typename CharT >
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struct is_nullary< custom_terminal< boost::log::expressions::format_date_time_terminal< T, FallbackPolicyT, CharT > > > :
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public mpl::false_
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{
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};
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} // namespace result_of
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} // namespace phoenix
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#endif // BOOST_LOG_DOXYGEN_PASS
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} // namespace boost
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#include <boost/log/detail/footer.hpp>
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#endif // BOOST_LOG_EXPRESSIONS_FORMATTERS_DATE_TIME_HPP_INCLUDED_
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