edu.vub.at.eval
Class InvocationStack

java.lang.Object
  edu.vub.at.eval.InvocationStack

All Implemented Interfaces:

java.lang.Cloneable, java.io.Serializable

public final class InvocationStack

extends java.lang.Object

implements java.lang.Cloneable, java.io.Serializable

An InvocationStack instance represents the stack of method invocations and function applications that are currently activated in an actor's thread. It is mainly used for debugging purposes (e.g. generating stack trace information)

Author:

tvc

See Also:

Serialized Form

Nested Class Summary

private static class

InvocationStack.InvocationFrame

Field Summary

private static java.lang.ThreadLocal	_INVOCATION_STACK_ A thread-local variable is used to assign a unique invocation stack to each separate actor.
private java.util.Stack	invocationStack_

Constructor Summary

private	InvocationStack()
private	InvocationStack(java.util.Stack initstack)

Method Summary

static InvocationStack	captureInvocationStack()
java.lang.Object	clone()
void	funcallReturned(ATObject result)
void	functionCalled(ATExpression funCall, ATClosure fun, ATTable evaluatedArgs)
static InvocationStack	getInvocationStack()
void	methodInvoked(ATExpression methodInvocation, ATObject receiver, ATMessage message)
void	methodReturned(ATObject result)
void	printStackTrace(java.io.PrintStream s)

Methods inherited from class java.lang.Object

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

Field Detail

_INVOCATION_STACK_

private static final java.lang.ThreadLocal _INVOCATION_STACK_

A thread-local variable is used to assign a unique invocation stack to each separate actor. Each actor that invokes the getInvocationStack() method receives its own separate copy of the invocation stack

invocationStack_

private final java.util.Stack invocationStack_

Constructor Detail

InvocationStack

private InvocationStack()

InvocationStack

private InvocationStack(java.util.Stack initstack)

Method Detail

getInvocationStack

public static final InvocationStack getInvocationStack()

captureInvocationStack

public static final InvocationStack captureInvocationStack()

methodInvoked

public void methodInvoked(ATExpression methodInvocation,
                          ATObject receiver,
                          ATMessage message)
                   throws InterpreterException

Throws:

InterpreterException

functionCalled

public void functionCalled(ATExpression funCall,
                           ATClosure fun,
                           ATTable evaluatedArgs)

methodReturned

public void methodReturned(ATObject result)

Parameters:

result - if null, the method invocation was aborted via an exception

funcallReturned

public void funcallReturned(ATObject result)

Parameters:

result - if null, the function call was aborted via an exception

printStackTrace

public void printStackTrace(java.io.PrintStream s)

clone

public java.lang.Object clone()