Package com.singularsys.jep.standard

Class UncheckedEvaluator

java.lang.Object

com.singularsys.jep.standard.UncheckedEvaluator

All Implemented Interfaces:

Evaluator, JepComponent, ParserVisitor, Serializable

public final class UncheckedEvaluator
extends Object
implements Evaluator, ParserVisitor

An evaluator which does fewer checks on values with a 5% faster speed.

Since:

3.5

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
UncheckedEvaluator()

Method Summary

Modifier and Type	Method	Description
Object	eval(Node node)	Evaluates a sub expression.
Object	evaluate(Node node)	Main entry point, 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.
Object	visit(ASTConstant node, Object data)
Object	visit(ASTFunNode node, Object data)
Object	visit(ASTOpNode node, Object data)
Object	visit(ASTVarNode node, Object data)
Object	visitConstant(Node node)
Object	visitVar(Node node)

Methods inherited from class java.lang.Object

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

Constructor Details

UncheckedEvaluator

public UncheckedEvaluator()

Method Details

init

public void init(Jep jep)

Description copied from interface: JepComponent

Initialize the component. This method 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

eval

public Object eval(Node node)
            throws EvaluationException

Description copied from interface: Evaluator

Evaluates a sub expression. This method can be called by PostfixMathCommands which implement CallbackEvaluationI

Specified by:

eval in interface Evaluator

Parameters:

node - node to evaluate

Returns:

The value after evaluating the sub expression.

Throws:

EvaluationException - if errors occur during evaluation;

evaluate

public Object evaluate(Node node)
                throws EvaluationException

Description copied from interface: Evaluator

Main entry point, evaluates a node and returns and object with the value of the node.

Specified by:

evaluate in interface Evaluator

Parameters:

node - node to evaluate

Returns:

value after evaluation

Throws:

EvaluationException - if errors occur during evaluation;

visit

public Object visit(ASTConstant node,
 Object data)
             throws EvaluationException

Specified by:

visit in interface ParserVisitor

Throws:

EvaluationException

visitConstant

public Object visitConstant(Node node)

visit

public Object visit(ASTVarNode node,
 Object data)
             throws EvaluationException

Specified by:

visit in interface ParserVisitor

Throws:

EvaluationException

visitVar

public Object visitVar(Node node)

visit

public Object visit(ASTFunNode node,
 Object data)
             throws EvaluationException

Specified by:

visit in interface ParserVisitor

Throws:

EvaluationException

visit

public Object visit(ASTOpNode node,
 Object data)
             throws EvaluationException

Specified by:

visit in interface ParserVisitor

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:

a new FastEvaluator