sjm.imperative
Class WhileCommand

java.lang.Object
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  +--sjm.imperative.Command
        |
        +--sjm.imperative.WhileCommand

public class WhileCommand

extends Command

This command mimics a normal "while" loop, executing a command in a loop, so long as some condition holds true.

Field Summary

protected Command	command
protected BooleanTerm	condition

Constructor Summary

WhileCommand(BooleanTerm condition, Command command)
Construct a "while" command from the given condition and command.

Method Summary

void	execute() Execute this "while" command.
java.lang.String	toString() Returns a string description of this while command.

Methods inherited from class java.lang.Object

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

Field Detail

condition

protected BooleanTerm condition

command

protected Command command

Constructor Detail

WhileCommand

public WhileCommand(BooleanTerm condition,
                    Command command)

Construct a "while" command from the given condition and command.

Parameters:

condition - the condition to check each time before executing the body

command - the command to repeatedly execute

Method Detail

execute

public void execute()

Execute this "while" command. This means repeatedly checking the condition, and executing command from this object's command, so long as the condition is true.

Overrides:

execute in class Command

toString

public java.lang.String toString()

Returns a string description of this while command.

Overrides:

toString in class java.lang.Object

Returns:

a string description of this while command