fr.umlv.corosol.component.impl
Class DefaultJavaStack

java.lang.Object
  fr.umlv.corosol.component.impl.DefaultJavaStack

All Implemented Interfaces:

JAllocatable, JavaStack, JObject

public class DefaultJavaStack
extends java.lang.Object
implements JavaStack

The default implementation of the JavaStack interface which represents a thread stack.

Author:

DELERAY Christophe

Constructor Summary

DefaultJavaStack(JHeap heap)
Creates a new java stack allocated into the specified heap.

Method Summary

int	getPosition() Returns the position of the first byte of the memory allocated for the Java stack representing by this JavaStack object into the Corosol heap memory.
int	getSize() Returns the size in bytes of this object into the Corosol memory heap.
boolean	isEmpty() Tests if this stack is empty.
JStackFrame	peekFrame() Returns the current frame corresponding to the frame at the top of this stack.
void	popFrame() Pops the current frame corresponding to the frame at the top of this stack.
void	pushFrame(JClassMethod method) Pushes a new frame which will be used for the execution of the specified method.
void	setPosition(int index) Sets the position of the first byte of the memory allocated for the Java stack representing by this JavaStack object into the Corosol heap memory.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultJavaStack

public DefaultJavaStack(JHeap heap)

Creates a new java stack allocated into the specified heap.

Parameters:

heap - the heap where this Java Stack are allocated

Method Detail

getPosition

public int getPosition()

Returns the position of the first byte of the memory allocated for the Java stack representing by this JavaStack object into the Corosol heap memory.

Specified by:

getPosition in interface JAllocatable

Returns:

the position of the first byte of the memory allocated for this Java stack into the Corosol heap memory

setPosition

public void setPosition(int index)

Sets the position of the first byte of the memory allocated for the Java stack representing by this JavaStack object into the Corosol heap memory.

Specified by:

setPosition in interface JAllocatable

Parameters:

index - the position of the first byte of the memory allocated for this Java stack into the Corosol heap memory.

getSize

public int getSize()

Returns the size in bytes of this object into the Corosol memory heap.

Specified by:

getSize in interface JAllocatable

pushFrame

public void pushFrame(JClassMethod method)

Pushes a new frame which will be used for the execution of the specified method.

Specified by:

pushFrame in interface JavaStack

Parameters:

method - a method

popFrame

public void popFrame()

Pops the current frame corresponding to the frame at the top of this stack.

Specified by:

popFrame in interface JavaStack

Throws:

java.lang.EmptyStackException - if java stack is empty

peekFrame

public JStackFrame peekFrame()

Returns the current frame corresponding to the frame at the top of this stack.

Specified by:

peekFrame in interface JavaStack

Returns:

the current frame

Throws:

java.lang.EmptyStackException - if java stack is empty

isEmpty

public boolean isEmpty()

Tests if this stack is empty.

Specified by:

isEmpty in interface JavaStack

Returns:

true if the stack is empty and false otherwise