org.rapidcontext.core.proc

Class CallStack

java.lang.Object

org.rapidcontext.core.proc.CallStack

public class CallStack
extends java.lang.Object

A procedure call stack. The stack contains an ordered list of the procedures currently being called.

Version:

1.0

Author:

Per Cederberg, Dynabyte AB

Constructor Summary

Constructors

Constructor and Description
CallStack()

Method Summary

Modifier and Type	Method and Description
Procedure	bottom() Returns the bottom procedure in the stack, i.e.
boolean	contains(Procedure proc) Checks if the specified procedure exists in the call stack.
int	height() Returns the current height of the call stack.
Procedure[]	toArray() Returns all procedures on the stack in an array.
Procedure	top() Returns the top procedure in the stack, i.e.

Methods inherited from class java.lang.Object

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

Constructor Detail

CallStack

public CallStack()

Method Detail

contains

public boolean contains(Procedure proc)

Checks if the specified procedure exists in the call stack.

Parameters:

proc - the procedure definition

Returns:

true if the procedure exists in the call stack, or false otherwise

height

public int height()

Returns the current height of the call stack.

Returns:

the current height of the call stack

bottom

public Procedure bottom()

Returns the bottom procedure in the stack, i.e. the first procedure in the call chain.

Returns:

the bottom procedure in the stack, or null if the stack is empty

top

public Procedure top()

Returns the top procedure in the stack, i.e. the last procedure in the call chain.

Returns:

the top procedure in the stack, or null if the stack is empty

toArray

public Procedure[] toArray()

Returns all procedures on the stack in an array.

Returns:

an array with all the procedures on the stack