gov.nasa.arc.brahms.vm.data
Interface IVMExpression

All Known Implementing Classes:

VMArrayAccess, VMArrayCreation, VMArrayInitializer, VMConstructorInvocation, VMExpression, VMMethodInvocation

public interface IVMExpression

The IVMExpression interface tags VM objects as being suitable for serving as an expression that can be evaluated to give a list of values

Version:

$Revision: 1.1 $ $Date: 2009/11/23 20:41:40 $ $Author: rnado $

Author:

Bob Nado

Method Summary

java.util.List<java.lang.Object>

evaluate(VMActiveInstanceCtx agent, VMFrameCtx frame) Evaluates the expression to produce a list of values.

Method Detail

evaluate

java.util.List<java.lang.Object> evaluate(VMActiveInstanceCtx agent,
                                          VMFrameCtx frame)
                                          throws gov.nasa.arc.brahms.common.exceptions.BrahmsException

Evaluates the expression to produce a list of values. Multiple values are possible as the expression may contain collectall variables with multiple values

Parameters:

agent - the VMActiveInstanceCtx for the agent performing the expression evaluation

frame - the VMFrameCtx for the frame that is being executed -- contains variable contexts for variables used in the evaluation

Returns:

List<Object> the list of values resulting from the expression evaluation

Throws:

gov.nasa.arc.brahms.common.exceptions.BrahmsException - if an error occurs during the expression evaluation