Package jason.stdlib
Class structure
java.lang.Object
jason.asSemantics.DefaultInternalAction
jason.stdlib.structure
- All Implemented Interfaces:
InternalAction
,Serializable
@Manual(literal=".structure(argument)",
hint="checks whether the argument is a structure",
argsHint="the term to be checked",
argsType="term",
examples={".structure(b(10)): true",".structure(b): true",".structure(10): false",".structure(\"home page\"): false",".structure(X): false if X is free, true if X is bound to a structure",".structure(a(X)): true",".structure(~c(f)): true",".structure([a,b,c]): true",".structure([a,b,c(X)]): true"},
seeAlso={"jason.stdlib.atom","jason.stdlib.list","jason.stdlib.literal","jason.stdlib.number","jason.stdlib.string","jason.stdlib.ground"})
public class structure
extends DefaultInternalAction
Internal action: .structure
.
Description: checks whether the argument is a structure, e.g.: "p", "p(1)", "[a,b]". Numbers, strings and free variables are not structures.
Parameter:
- + argument (any term): the term to be checked.
Examples:
-
.structure(b(10))
: true. -
.structure(b)
: true. -
.structure(10)
: false. -
.structure("home page")
: false. -
.structure(X)
: false if X is free, true if X is bound to a structure. -
.structure(a(X))
: true. -
.structure([a,b,c])
: true. -
.structure([a,b,c(X)])
: true.
- See Also:
-
Constructor Summary
-
Method Summary
Modifier and TypeMethodDescriptionstatic InternalAction
create()
execute
(TransitionSystem ts, Unifier un, Term[] args) Executes the internal action.int
int
Methods inherited from class jason.asSemantics.DefaultInternalAction
canBeUsedInContext, checkArguments, destroy, prepareArguments, suspendIntention
-
Constructor Details
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structure
public structure()
-
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Method Details
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create
-
getMinArgs
public int getMinArgs()- Overrides:
getMinArgs
in classDefaultInternalAction
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getMaxArgs
public int getMaxArgs()- Overrides:
getMaxArgs
in classDefaultInternalAction
-
execute
Description copied from interface:InternalAction
Executes the internal action. It should return a Boolean or an Iterator. A true boolean return means that the IA was successfully executed. An Iterator result means that there is more than one answer for this IA (e.g. see member internal action). - Specified by:
execute
in interfaceInternalAction
- Overrides:
execute
in classDefaultInternalAction
- Throws:
Exception
-