spot::ltl::default_environment Class Reference
[LTL environments]

#include <ltlenv/defaultenv.hh>

Inheritance diagram for spot::ltl::default_environment:

[legend]Collaboration diagram for spot::ltl::default_environment:


Public Member Functions
virtual	~default_environment ()
virtual formula *	require (const std::string &prop_str)
	Obtain the formula associated to prop_str.
virtual const std::string &	name ()
	Get the name of the environment.
Static Public Member Functions
static default_environment &	instance ()
	Get the sole instance of spot::ltl::default_environment.
Protected Member Functions
	default_environment ()

Detailed Description

A laxist environment.

This environment recognizes all atomic propositions.

This is a singleton. Use default_environment::instance() to obtain the instance.

Constructor & Destructor Documentation

virtual spot::ltl::default_environment::~default_environment ( ) [virtual]

spot::ltl::default_environment::default_environment ( ) [protected]

Member Function Documentation

virtual formula* spot::ltl::default_environment::require ( const std::string & prop_str ) [virtual]

Obtain the formula associated to prop_str.

Usually prop_str, is the name of an atomic proposition, and spot::ltl::require simply returns the associated spot::ltl::atomic_prop.

Note this is not a const method. Some environments will "create" the atomic proposition when requested.

We return a spot::ltl::formula instead of an spot::ltl::atomic_prop, because this will allow nifty tricks (e.g., we could name formulae in an environment, and let the parser build a larger tree from these).