Package jason.stdlib
Class list
java.lang.Object
jason.asSemantics.DefaultInternalAction
jason.stdlib.list
- All Implemented Interfaces:
InternalAction
,Serializable
@Manual(literal=".list(argument)",
hint="checks whether the argument is a list",
argsHint="the term to be checked",
argsType="term",
examples={".list([a,b,c]): true",".list([a,b,c(X)]): true",".list(b(10)): false",".list(10): false",".list(\"home page\"): false",".list(X): false if X is free, true if X is bound to a list",".list(a(X)): false"},
seeAlso={"jason.stdlib.atom","jason.stdlib.literal","jason.stdlib.number","jason.stdlib.string","jason.stdlib.structure","jason.stdlib.ground"})
public class list
extends DefaultInternalAction
Internal action: .list
.
Description: checks whether the argument is a list, e.g.: "[a,b]", "[]".
Parameter:
- + argument (any term): the term to be checked.
Examples:
-
.list([a,b,c])
: true. -
.list([a,b,c(X)])
: true. -
.list(b(10))
: false. -
.list(10)
: false. -
.list("home page")
: false. -
.list(X)
: false if X is free, true if X is bound to a list. -
.list(a(X))
: false.
- 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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list
public list()
-
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Method Details
-
create
-
getMinArgs
public int getMinArgs()- Overrides:
getMinArgs
in classDefaultInternalAction
-
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
-