uk.ac.man.cs.rainbow.simulator
Class RASM.BinaryLogicFunction

java.lang.Object
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  +--uk.ac.man.cs.rainbow.simulator.Instruction
        |
        +--uk.ac.man.cs.rainbow.simulator.RASM.BinaryLogicFunction

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

And, Or, Xor

Enclosing class:

RASM

public abstract static class RASM.BinaryLogicFunction

extends Instruction

Binary operations over logic values. May work with either a pair of booleans or a pair of integers. The boolean-valued function is used when both the values popped off the stack are booleans, and the integer-valued function is used otherwise. All are of the form:

x y op(x,y)

See Also:

Data.Word, Type.Boolean, RASMThread.popWord(), RASMThread.push(int), RASMThread.push(boolean), Data.Word.getValue(), Serialized Form

Inner classes inherited from class uk.ac.man.cs.rainbow.simulator.Instruction

Instruction.MACRO

Constructor Summary

RASM.BinaryLogicFunction()

RASM.BinaryLogicFunction(RASMCode code)

Method Summary

protected abstract boolean	execute(boolean x, boolean y) Perform a logical binary operation over booleans.
protected abstract int	execute(int x, int y) Perform a logical binary operation over integers (bit-wise).
protected boolean	execute(RASMThread thread) Make this instruction execute in the given context.

Methods inherited from class uk.ac.man.cs.rainbow.simulator.Instruction

addClass, getInstruction, getInstruction, getInstruction

Methods inherited from class java.lang.Object

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

Constructor Detail

RASM.BinaryLogicFunction

public RASM.BinaryLogicFunction()

RASM.BinaryLogicFunction

public RASM.BinaryLogicFunction(RASMCode code)

Method Detail

execute

protected abstract int execute(int x,
                               int y)

Perform a logical binary operation over integers (bit-wise).

Parameters:

x - The first (lower on the stack) value argument.

y - The second (higher on the stack) value argument.

Returns:

The result of the operation.

execute

protected abstract boolean execute(boolean x,
                                   boolean y)

Perform a logical binary operation over booleans.

Parameters:

x - The first (lower on the stack) value argument.

y - The second (higher on the stack) value argument.

Returns:

The result of the operation.

execute

protected final boolean execute(RASMThread thread)
                         throws RASMThread.Exception

Description copied from class: Instruction

Make this instruction execute in the given context.

Overrides:

execute in class Instruction

Following copied from class: uk.ac.man.cs.rainbow.simulator.Instruction

Throws:

RainbowException - All sorts of things can go wrong during execution...