X-Git-Url: https://ruin.nu/git/?p=popboot.git;a=blobdiff_plain;f=action.h;h=40e2db3137e4481e7adcad2be73f3ec75ed8a0f2;hp=606857d8524ade62545f3455d8984e0dfbe4325a;hb=HEAD;hpb=716fc4e282ce52fe953867171c046acd3b614d3b diff --git a/action.h b/action.h index 606857d..40e2db3 100644 --- a/action.h +++ b/action.h @@ -4,13 +4,17 @@ #include #include #include +#include +//! A list of strings, each string representing an effect. typedef std::vector Literals; +//! A map, but really a list of pairs, the precondition as a string, and a bool, true if it's a hard precondition, otherwise false. typedef __gnu_cxx::hash_map Preconditions; +//! A map from returnvalue of the execution to the effects achieved. typedef __gnu_cxx::hash_map EffectsMap; +// These are needed to be able to use std::string as key in a hash_map. namespace __gnu_cxx { - template< typename CharT, typename Traits, typename Alloc > struct hash< std::basic_string > { size_t operator()(const std::basic_string& s) const { @@ -35,21 +39,61 @@ namespace __gnu_cxx { }; }; + +/** + * This class holds the information associated with an action. + * This is the name, the preconditions, the executable and the effects. + */ class Action { public: + /** + * Creates an action. + * @param name The name given to this action. + * @param preconditions The preconditions needed before execution of this action. + * @param executable The executable which will be executed. + * @param effects The effects which will be achieved after execution. + */ Action(std::string name, const Preconditions& preconditions, std::string executable, const EffectsMap& effects); + + /** + * Creates a copy of the given action. + */ Action(const Action& action); + /** + * Creates an empty, non-functional, action. + */ Action(){}; + + /** + * Returns the effects which will be achived if the action returns + * the input value. + */ const Literals& effects(int value) const; + + /** + * Returns the preconditions needed before execution of this action. + */ const Preconditions& preconditions() const; + /** + * Returns the name of this action. + */ const std::string& name() const; + /** + * Executes this action. + * @return the returnvalue of the execution. Can be used to find out the effects achieved. + */ int execute() const; protected: + //! The name of the action. std::string _name; + //! The executable which can be executed. std::string _executable; + //! The preconditions needed before execution. Preconditions _preconditions; + //! The effects which can be achieved. EffectsMap _effects; + //! An empty list of effects which will be returned if the returnvalue was not found in _effects. static const Literals _empty; };