Package org.cyclops.integrateddynamics.core.evaluate.expression

Class LazyExpression<V extends IValue>

java.lang.Object

org.cyclops.integrateddynamics.api.evaluate.expression.VariableAdapter<V>

org.cyclops.integrateddynamics.core.evaluate.expression.LazyExpression<V>

All Implemented Interfaces:

IExpression<V>, IVariable<V>, IVariableInvalidateListener

public class LazyExpression<V extends IValue>
extends VariableAdapter<V>
implements IExpression<V>

A generic expression with arbitrarily nested binary operations. This is evaluated in a lazy manner.

Constructor Summary

Constructors

Constructor	Description
LazyExpression(int id, IOperator op, IVariable[] input, ILazyExpressionValueCache valueCache)

Method Summary

Modifier and Type	Method	Description
IValue	evaluate()
IVariable[]	getInput()
IOperator	getOperator()
IValueType<V>	getType()
V	getValue()
boolean	hasErrored()
void	invalidate()	Called when a variable was invalidated.

Methods inherited from class org.cyclops.integrateddynamics.api.evaluate.expression.VariableAdapter

addInvalidationListener, removeInvalidationListener

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.cyclops.integrateddynamics.api.evaluate.variable.IVariable

addInvalidationListener, removeInvalidationListener

Constructor Details

LazyExpression

public LazyExpression(int id,
 IOperator op,
 IVariable[] input,
 ILazyExpressionValueCache valueCache)

Method Details

evaluate

public IValue evaluate()
                throws EvaluationException

Specified by:

evaluate in interface IExpression<V extends IValue>

Returns:

The current evaluation result of the input variables.

Throws:

EvaluationException - When something went wrong while evaluating.

hasErrored

public boolean hasErrored()

Specified by:

hasErrored in interface IExpression<V extends IValue>

Returns:

If this expression last evaluation resulted in an error.

getType

public IValueType<V> getType()

Specified by:

getType in interface IVariable<V extends IValue>

Returns:

The type of value this variable provides.

getValue

public V getValue()
           throws EvaluationException

Specified by:

getValue in interface IVariable<V extends IValue>

Returns:

The current value of this variable.

Throws:

EvaluationException - If something went wrong while evaluating

invalidate

public void invalidate()

Description copied from interface: IVariableInvalidateListener

Called when a variable was invalidated.

Specified by:

invalidate in interface IVariableInvalidateListener

Overrides:

invalidate in class VariableAdapter<V extends IValue>

getOperator

public IOperator getOperator()

getInput

public IVariable[] getInput()