Package dev.zemco.codegame.execution.instructions

Class JumpIfZeroInstruction

java.lang.Object

dev.zemco.codegame.execution.instructions.JumpInstruction

dev.zemco.codegame.execution.instructions.JumpIfZeroInstruction

All Implemented Interfaces:

IInstruction

public class JumpIfZeroInstruction
extends JumpInstruction

Instruction that performs a jump of the engine to the specified label if the value of the working memory cell is equal to zero.

Author:

Erik Zemčík

Constructor Summary

Constructors

Constructor	Description
JumpIfZeroInstruction(String label)	Creates an instance of JumpIfZeroInstruction with the target jump label.

Method Summary

Modifier and Type	Method	Description
protected boolean	shouldPerformJump(IExecutionContext executionContext)	Checks if the value of the working memory cell is equal to zero.

Methods inherited from class dev.zemco.codegame.execution.instructions.JumpInstruction

execute

Methods inherited from class java.lang.Object

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

Constructor Details

JumpIfZeroInstruction

public JumpIfZeroInstruction(String label)

Creates an instance of JumpIfZeroInstruction with the target jump label.

Parameters:

label - target label of the jump

Throws:

IllegalArgumentException - if label is null or empty

Method Details

shouldPerformJump

protected boolean shouldPerformJump(IExecutionContext executionContext)
                             throws InstructionExecutionException

Checks if the value of the working memory cell is equal to zero.

Overrides:

shouldPerformJump in class JumpInstruction

Parameters:

executionContext - context on which the instruction is executed

Returns:

true if the value of the working memory cell is equal to zero, else false

Throws:

InstructionExecutionException - if the working memory cell holds no value