Package edu.cmu.tetrad.calculator.expression

Interface ExpressionDescriptor

All Superinterfaces:

Serializable, TetradSerializable

public interface ExpressionDescriptor
extends TetradSerializable

Represents a definition for some expression.

Version:

$Id: $Id

Author:

Tyler Gibson

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static enum	ExpressionDescriptor.Position	An enum of positions that an expression can occur in.

Field Summary

Fields

Modifier and Type	Field	Description
static final long	serialVersionUID	Constant serialVersionUID=23L

Method Summary

Modifier and Type	Method	Description
Expression	createExpression(Expression... expressions)	Creates the actual expression that can be used to evaluate matters from the given expressions.
String	getName()	getName.
ExpressionDescriptor.Position	getPosition()	getPosition.
ExpressionSignature	getSignature()	getSignature.
String	getToken()	getToken.

Field Details

serialVersionUID

static final long serialVersionUID

Constant serialVersionUID=23L

See Also:

• Constant Field Values

Method Details

getName

String getName()

getName.

Returns:

the name that the expressions is known under.

getToken

String getToken()

getToken.

Returns:

the token that represents the expression, such as "+".

getSignature

ExpressionSignature getSignature()

getSignature.

Returns:

the signature that should be used.

getPosition

ExpressionDescriptor.Position getPosition()

getPosition.

Returns:

the position that the expression can occur in.

createExpression

Expression createExpression(Expression... expressions)
                     throws ExpressionInitializationException

Creates the actual expression that can be used to evaluate matters from the given expressions.

Parameters:

expressions - a Expression object

Returns:

a Expression object

Throws:

ExpressionInitializationException - if any.