spot
0.8.2
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An environment that describes atomic propositions. More...
#include <ltlenv/environment.hh>
Public Member Functions | |
virtual formula * | require (const std::string &prop_str)=0 |
Obtain the formula associated to prop_str. | |
virtual const std::string & | name ()=0 |
Get the name of the environment. | |
virtual | ~environment () |
An environment that describes atomic propositions.
virtual spot::ltl::environment::~environment | ( | ) | [inline, virtual] |
virtual const std::string& spot::ltl::environment::name | ( | ) | [pure virtual] |
Get the name of the environment.
Implemented in spot::ltl::declarative_environment, and spot::ltl::default_environment.
virtual formula* spot::ltl::environment::require | ( | const std::string & | prop_str | ) | [pure 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).
Implemented in spot::ltl::declarative_environment, and spot::ltl::default_environment.