Package com.aquima.interactions.expressions.semantics.nodes

Class Constant

java.lang.Object

com.aquima.interactions.expressions.semantics.SemanticNodeBase

com.aquima.interactions.expressions.semantics.nodes.Constant

All Implemented Interfaces:

ISemanticNode

public class Constant
extends SemanticNodeBase

The const expression is used to hold a constant value.

Since:

6.4

Author:

O. Kerpershoek, F. van der Meer

Constructor Summary

Constructors

Constructor	Description
Constant(Position position, IValue constValue)	Constructs the node with the required arguments.

Method Summary

Modifier and Type	Method	Description
void	collectScopedObjects(ScopedObjects resultSet)	This method may be used to collect the names of the objects that need to be in scope in order to evaluate the expression of this node.
ISemanticNode[]	getChildNodes()	This method returns an array containing the child nodes.
IValue	getValue()	This method returns the constant value of this node.
String	toString()
void	visit(ISemanticNodeVisitor visitor)	This method allows a type safe visitation of the node.

Methods inherited from class com.aquima.interactions.expressions.semantics.SemanticNodeBase

addMessage, getDataType, getDomain, getMessages, getPosition, getType, hasMessage, isDerivedType, isMultivalue, setDerived, setDomain, setType, setType

Methods inherited from class java.lang.Object

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

Constructor Details

Constant

public Constant(Position position,
 IValue constValue)

Constructs the node with the required arguments.

Parameters:

position - Position information for the node.

constValue - The value of the const expression.

Method Details

getValue

public IValue getValue()

This method returns the constant value of this node.

Returns:

the constant value of this node.

getChildNodes

public ISemanticNode[] getChildNodes()

Description copied from interface: ISemanticNode

This method returns an array containing the child nodes. The order of the child nodes in the array is not defined, and the array may be empty for nodes that do not have child nodes.

Returns:

Array containing the child nodes of this node.

collectScopedObjects

public void collectScopedObjects(ScopedObjects resultSet)

Description copied from interface: ISemanticNode

This method may be used to collect the names of the objects that need to be in scope in order to evaluate the expression of this node. The object passed to the method will be enriched with the names of the objects that need to be in scope.

Parameters:

resultSet - The object that should be used to add the names of the objects that need to be in scope to.

visit

public void visit(ISemanticNodeVisitor visitor)

Description copied from interface: ISemanticNode

This method allows a type safe visitation of the node. The visit method will not invoke the visitor for any child nodes.

Parameters:

visitor - The visitor that should be invoked for this node.

toString

public String toString()

Overrides:

toString in class SemanticNodeBase