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## com.singularsys.jep.reals
Class RealEvaluator

    java.lang.Object
      com.singularsys.jep.reals.RealEvaluator

All Implemented Interfaces:
  Evaluator, JepComponent, java.io.Serializable

    public class RealEvaluator

extends java.lang.Object
implements Evaluator

Performs fast evaluation of expressions by using primitive types double and boolean instead of objects.

See Also:
  Serialized Form

Constructor Summary
`RealEvaluator()`

Method Summary
`java.lang.Object` | `eval(Node node)` Evaluates a sub expression.
`java.lang.Object` | `evaluate(Node node)` Evaluates a node and returns and object with the value of the node.
`JepComponent` | `getLightWeightInstance()` Gets a light-weight instance suitable for using in multiple threads.
`void` | `init(Jep jep)` Initialize the component.
`protected double` | `visit(Node node)`
`protected double[]` | `visitChildren(ASTFunNode node)`
`protected double` | `visitConstant(ASTConstant node)`
`protected double` | `visitFunction(ASTFunNode node)`
`protected double` | `visitVariable(ASTVarNode node)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### RealEvaluator

    public RealEvaluator()

Method Detail

### evaluate

    public java.lang.Object evaluate(Node node)
                              throws EvaluationException

  Description copied from interface: `Evaluator`
  Evaluates a node and returns and object with the value of the node.

  Specified by:
    `evaluate` in interface `Evaluator`
  Throws:
    `EvaluationException` - if errors occur during evaluation;

### eval

    public java.lang.Object eval(Node node)
                          throws EvaluationException

  Description copied from interface: `Evaluator`
  Evaluates a sub expression.

  Specified by:
    `eval` in interface `Evaluator`
  Throws:
    `EvaluationException` - if errors occur during evaluation;

### init

    public void init(Jep jep)

  Description copied from interface: `JepComponent`
  Initialize the component. This methods is called whenever a component is added to Jep. Hence it allows components to keep track of the other components they may rely on.

  Specified by:
    `init` in interface `JepComponent`
  Parameters:
    `jep` - the current Jep instance

### visit

    protected double visit(Node node)
                    throws EvaluationException

  Throws:
    `EvaluationException`

### visitChildren

    protected double[] visitChildren(ASTFunNode node)
                              throws EvaluationException

  Throws:
    `EvaluationException`

### visitFunction

    protected double visitFunction(ASTFunNode node)
                            throws EvaluationException

  Throws:
    `EvaluationException`

### visitVariable

    protected double visitVariable(ASTVarNode node)
                            throws EvaluationException

  Throws:
    `EvaluationException`

### visitConstant

    protected double visitConstant(ASTConstant node)
                            throws EvaluationException

  Throws:
    `EvaluationException`

### getLightWeightInstance

    public JepComponent getLightWeightInstance()

  Description copied from interface: `JepComponent`
  Gets a light-weight instance suitable for using in multiple threads.

  Specified by:
    `getLightWeightInstance` in interface `JepComponent`
  Returns:
    either an new instance, or 'this'.

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Copyright © 2008 Singular Systems http://www.singularsys.com/jep