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java.lang.Object jason.asSemantics.DefaultArithFunction jason.functions.RuleToFunction
public class RuleToFunction
Wraps a rule into a function. For example the rule sum(X,Y,Z) :- Z = X+Y. is wrapped in a function sum(X,Y).
To define sum as a function the user should register it using a directive in the ASL code: { register_function("myf.sum",2,"sum") } where myf.sum is the name of the function, sum is the name of the rule (or literal, or internal action) and 2 is the function's arity.
Constructor Summary | |
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RuleToFunction(java.lang.String literal,
int arity)
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Method Summary | |
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boolean |
allowUngroundTerms()
returns true if the arguments of the function can be unground (as in .count) |
boolean |
checkArity(int a)
returns true if a is a good number of arguments for the function |
double |
evaluate(TransitionSystem ts,
Term[] args)
evaluates/computes the function based on the args |
java.lang.String |
getName()
returns the name of the function |
java.lang.String |
toString()
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Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Constructor Detail |
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public RuleToFunction(java.lang.String literal, int arity)
Method Detail |
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public java.lang.String getName()
ArithFunction
getName
in interface ArithFunction
getName
in class DefaultArithFunction
public boolean checkArity(int a)
ArithFunction
checkArity
in interface ArithFunction
checkArity
in class DefaultArithFunction
public boolean allowUngroundTerms()
ArithFunction
allowUngroundTerms
in interface ArithFunction
allowUngroundTerms
in class DefaultArithFunction
public double evaluate(TransitionSystem ts, Term[] args) throws java.lang.Exception
ArithFunction
evaluate
in interface ArithFunction
evaluate
in class DefaultArithFunction
java.lang.Exception
public java.lang.String toString()
toString
in class DefaultArithFunction
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