ix.util.lisp
Class Interpreter.JFunction

java.lang.Object
  ix.util.lisp.Interpreter.AbstractFunction
      ix.util.lisp.Interpreter.JFunction

All Implemented Interfaces:

Interpreter.Function

Direct Known Subclasses:

ComputeExtensionExample.ExampleFunction

Enclosing class:

Interpreter

public abstract static class Interpreter.JFunction
extends Interpreter.AbstractFunction

A function implemented in Java.

This class makes isSafe() return true; a subclass should override that method if it is unsafe.

Field Summary

protected int	arity
protected Symbol	name

Fields inherited from interface ix.util.lisp.Interpreter.Function

ANY_ARITY

Constructor Summary

Interpreter.JFunction(java.lang.String name, int arity)

Interpreter.JFunction(Symbol name, int arity)

Method Summary

int	getArity() Returns the number of arguments this function expects.
boolean	isSafe() Says whether the function can safely be used in cases where you don't want the user to be able to read or write files or to get other information about the host machine.
java.lang.String	toString()

Methods inherited from class ix.util.lisp.Interpreter.AbstractFunction

checkArity, mustBe

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface ix.util.lisp.Interpreter.Function

applyTo

Field Detail

name

protected Symbol name

arity

protected int arity

Constructor Detail

Interpreter.JFunction

public Interpreter.JFunction(java.lang.String name,
                             int arity)

Interpreter.JFunction

public Interpreter.JFunction(Symbol name,
                             int arity)

Method Detail

getArity

public int getArity()

Description copied from interface: Interpreter.Function

Returns the number of arguments this function expects. If the function can take any number of arguments, the value is Interpreter.Function.ANY_ARITY.

isSafe

public boolean isSafe()

Says whether the function can safely be used in cases where you don't want the user to be able to read or write files or to get other information about the host machine.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object