com.sk89q.worldedit.expression.runtime

Class Function

java.lang.Object

com.sk89q.worldedit.expression.runtime.Node

com.sk89q.worldedit.expression.runtime.Function

All Implemented Interfaces:

Identifiable, RValue

Direct Known Subclasses:

LValueFunction

public class Function
extends Node

Wrapper for a Java method and its arguments (other Nodes)

Author:

TomyLobo

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	Function.Dynamic Add this annotation on functions that don't always return the same value for the same inputs and on functions with side-effects.

Method Summary

Methods

Modifier and Type	Method and Description
RValue	bindVariables(Expression expression, boolean preferLValue)
double	getValue()
char	id() Returns a character that helps identify the token, pseudo-token or invokable in question.
protected static double	invokeMethod(Method method, Object[] args)
RValue	optimize()
String	toString()

Methods inherited from class com.sk89q.worldedit.expression.runtime.Node

getPosition

Methods inherited from class java.lang.Object

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

Method Detail

getValue

public final double getValue()
                      throws EvaluationException

Throws:

EvaluationException

invokeMethod

protected static final double invokeMethod(Method method,
                  Object[] args)
                                    throws EvaluationException

Throws:

EvaluationException

toString

public String toString()

Specified by:

toString in class Node

id

public char id()

Description copied from interface: Identifiable

Returns a character that helps identify the token, pseudo-token or invokable in question.

 Tokens:
 i - IdentifierToken
 0 - NumberToken
 o - OperatorToken
 \0 - NullToken
 CharacterTokens are returned literally

 PseudoTokens:
 p - UnaryOperator
 V - UnboundVariable

 Nodes:
 c - Constant
 v - Variable
 f - Function
 l - LValueFunction
 s - Sequence
 I - Conditional
 w - While
 F - For
 r - Return
 b - Break (includes continue)
 S - SimpleFor
 C - Switch
 

optimize

public RValue optimize()
                throws EvaluationException

Specified by:

optimize in interface RValue

Overrides:

optimize in class Node

Throws:

EvaluationException

bindVariables

public RValue bindVariables(Expression expression,
                   boolean preferLValue)
                     throws ParserException

Specified by:

bindVariables in interface RValue

Overrides:

bindVariables in class Node

Throws:

ParserException