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org.scoja.server.core
Class StackedEnvironment  

java.lang.Object
  org.scoja.server.core.StackedEnvironment

All Implemented Interfaces:

Environment

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public class StackedEnvironment

extends java.lang.Object

implements Environment

A simple implementation of Environment with no special emphasis in any operation.

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Field Summary
private static int	INITIAL_FRAME_SIZE
protected  java.util.HashMap[]	stack
protected  int	top

 

Fields inherited from interface org.scoja.server.core.Environment

Q_UNKNOWN, UNKNOWN

 

Constructor Summary

StackedEnvironment()

 

Method Summary
void	define(java.lang.String var, QStr value)           Set a (new) value for variable var
void	define(java.lang.String var, java.lang.String value)           Set a (new) value for variable var
QStr	definition(java.lang.String var)           Return the value give to var; null if no var is undefined.
boolean	isDefined(java.lang.String var)
void	mark()           Put a mark.
void	release()           Make this enviroment to forget al modification after the last execution of mark() 55 .
java.lang.String	toString()           Convert this Object to a human-readable String.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

INITIAL_FRAME_SIZE

private static final int INITIAL_FRAME_SIZE

See Also:

Constant Field Values

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stack

protected java.util.HashMap[] stack

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top

protected int top

Constructor Detail

StackedEnvironment

public StackedEnvironment()

Method Detail

mark

public void mark()

Description copied from interface: Environment

Put a mark. All modificatons (variables defined or redefined) after executing this operation will be forgotten after executing Environment.release() 55 .

Specified by:

mark in interface Environment

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release

public void release()

Description copied from interface: Environment

Make this enviroment to forget al modification after the last execution of Environment.mark() 55 .

Specified by:

release in interface Environment

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isDefined

public boolean isDefined(java.lang.String var)

Specified by:

isDefined in interface Environment

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definition

public QStr definition(java.lang.String var)

Description copied from interface: Environment

Return the value give to var; null if no var is undefined.

Specified by:

definition in interface Environment

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define

public void define(java.lang.String var,
                   java.lang.String value)

Description copied from interface: Environment

Set a (new) value for variable var

Specified by:

define in interface Environment

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define

public void define(java.lang.String var,
                   QStr value)

Description copied from interface: Environment

Set a (new) value for variable var

Specified by:

define in interface Environment

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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