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Interface aioli.vtp.Arity

public interface Arity
extends Serializable
This interface represents a collection of possible arity:

Variable Index

o INT
Represents an integer atomic operator
o METAVAR
Represents a meta atomic operator
o NULL
Represents a atomic singleton operator
o STRING
Represents a string atomic operator
o TREE
Represents a non atomic operator

Method Index

o atomp()
Checks if it is an atom arity tree.
o fixedp()
Checks if it is a fixed arity.
o getarity()
When the arity is fixed returns the number of sons accepted.
o gettype()
Returns the type of arity.
o pluslistp()
Checks if it is a plus list.
o starlistp()
Checks if it is a star list.

Variables

o NULL 
 public static final int NULL
Represents a atomic singleton operator

o INT 
 public static final int INT
Represents an integer atomic operator

o STRING 
 public static final int STRING
Represents a string atomic operator

o METAVAR 
 public static final int METAVAR
Represents a meta atomic operator

o TREE 
 public static final int TREE
Represents a non atomic operator

Methods

o starlistp 
 public abstract boolean starlistp()
Checks if it is a star list.

o pluslistp 
 public abstract boolean pluslistp()
Checks if it is a plus list.

o atomp 
 public abstract boolean atomp()
Checks if it is an atom arity tree.

o fixedp 
 public abstract boolean fixedp()
Checks if it is a fixed arity.

o getarity 
 public abstract int getarity()
When the arity is fixed returns the number of sons accepted.

Returns:
The number of sons allowed by the operator if fixed otherwise 0.
o gettype 
 public abstract int gettype()
Returns the type of arity.

Returns:
The type of the arity. 
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