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113 lines
5.2 KiB
113 lines
5.2 KiB
/*============================================================================= |
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Copyright (c) 2003 Jonathan de Halleux (dehalleux@pelikhan.com) |
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http://spirit.sourceforge.net/ |
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Distributed under the Boost Software License, Version 1.0. (See accompanying |
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) |
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=============================================================================*/ |
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#ifndef BOOST_SPIRIT_ACTOR_HPP |
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#define BOOST_SPIRIT_ACTOR_HPP |
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#include <boost/spirit/home/classic/version.hpp> |
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/////////////////////////////////////////////////////////////////////////////// |
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// |
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// Actors documentation and convention |
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// |
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// Actors |
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// |
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// Actors are predefined semantic action functors. They are used to do an |
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// action on the parse result if the parser has had a successful match. An |
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// example of actor is the append_actor described in the Spirit |
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// documentation. |
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// |
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// The action takes place through a call to the () operator: single argument |
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// () operator call for character parsers and two argument (first,last) call |
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// for phrase parsers. Actors should implement at least one of the two () |
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// operator. |
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// |
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// Actor instances are not created direcly since they usually involve a |
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// number of template parameters. Instead generator functions ("helper |
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// functions") are provided to generate actors according to their arguments. |
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// All helper functions have the "_a" suffix. For example, append_actor is |
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// created using the append_a function. |
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// |
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// Policy holder actors and policy actions |
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// |
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// A lot of actors need to store reference to one or more objects. For |
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// example, actions on container need to store a reference to the container. |
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// Therefore, this kind of actor have been broken down into |
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// |
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// - a action policy that does the action (act method), |
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// - a policy holder actor that stores the references and feeds the act |
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// method. |
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// |
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// Policy holder actors |
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// |
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// Policy holder have the following naming convention: |
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// <member>_ >> *<member> >> !value >> actor |
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// where member are the policy stored member, they can be of type: |
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// |
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// - ref, a reference, |
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// - const_ref, a const reference, |
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// - value, by value, |
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// - empty, no stored members |
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// - !value states if the policy uses the parse result or not. |
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// |
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// The available policy holder are enumerated below: |
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// |
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// - empty_actor, nothing stored, feeds parse result |
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// - value_actor, 1 object stored by value, feeds value |
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// - ref_actor, 1 reference stored, feeds ref |
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// - ref_value_actor, 1 reference stored, feeds ref and parse result |
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// |
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// Doc. convention |
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// |
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// - ref is a reference to an object stored in a policy holder actor, |
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// - value_ref,value1_ref, value2_ref are a const reference stored in a |
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// policy holder actor, |
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// - value is the parse result in the single argument () operator, |
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// - first,last are the parse result in the two argument () operator |
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// |
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// Actors (generator functions) and quick description |
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// |
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// - assign_a(ref) assign parse result to ref |
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// - assign_a(ref, value_ref) assign value_ref to ref |
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// - increment_a(ref) increment ref |
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// - decrement_a(ref) decrement ref |
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// - push_back_a(ref) push back the parse result in ref |
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// - push_back_a(ref, value_ref) push back value_ref in ref |
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// - push_front_a(ref) push front the parse result in ref |
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// - push_front_a(ref, value_ref) push front value_ref in ref |
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// - insert_key_a(ref,value_ref) insert value_ref in ref using the |
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// parse result as key |
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// - insert_at_a(ref, key_ref) insert the parse result in ref at key_ref |
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// - insert_at_a(ref, key_ref insert value_ref in ref at key_ref |
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// , value_ref) |
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// - assign_key_a(ref, value_ref) assign value_ref in ref using the |
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// parse result as key |
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// - erase_a(ref, key) erase data at key from ref |
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// - clear_a(ref) clears ref |
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// - swap_a(aref, bref) swaps aref and bref |
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// |
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/////////////////////////////////////////////////////////////////////////////// |
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#include <boost/spirit/home/classic/actor/ref_actor.hpp> |
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#include <boost/spirit/home/classic/actor/ref_value_actor.hpp> |
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#include <boost/spirit/home/classic/actor/ref_const_ref_actor.hpp> |
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#include <boost/spirit/home/classic/actor/ref_const_ref_value_actor.hpp> |
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#include <boost/spirit/home/classic/actor/ref_const_ref_const_ref_a.hpp> |
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#include <boost/spirit/home/classic/actor/assign_actor.hpp> |
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#include <boost/spirit/home/classic/actor/clear_actor.hpp> |
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#include <boost/spirit/home/classic/actor/increment_actor.hpp> |
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#include <boost/spirit/home/classic/actor/decrement_actor.hpp> |
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#include <boost/spirit/home/classic/actor/push_back_actor.hpp> |
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#include <boost/spirit/home/classic/actor/push_front_actor.hpp> |
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#include <boost/spirit/home/classic/actor/erase_actor.hpp> |
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#include <boost/spirit/home/classic/actor/insert_key_actor.hpp> |
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#include <boost/spirit/home/classic/actor/insert_at_actor.hpp> |
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#include <boost/spirit/home/classic/actor/assign_key_actor.hpp> |
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#include <boost/spirit/home/classic/actor/swap_actor.hpp> |
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#endif
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