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spot::ltl::default_environment Class Reference

A laxist environment. More...

#include <defaultenv.hh>

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List of all members.

Public Member Functions

virtual ~default_environment ()
virtual formularequire (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

default_environmentinstance ()
 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

default_environment& spot::ltl::default_environment::instance  )  [static]
 

Get the sole instance of spot::ltl::default_environment.

virtual const std::string& spot::ltl::default_environment::name  )  [virtual]
 

Get the name of the environment.

Implements spot::ltl::environment.

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).

Returns:
0 iff prop_str is not part of the environment, or the associated spot::ltl::formula otherwise.

Implements spot::ltl::environment.


The documentation for this class was generated from the following file:
Generated on Mon Mar 8 23:32:21 2004 for spot by doxygen 1.3.5