net.bytebuddy.implementation

Class EqualsMethod.ConditionalReturn

java.lang.Object

net.bytebuddy.implementation.EqualsMethod.ConditionalReturn

All Implemented Interfaces:

StackManipulation

Enclosing class:

EqualsMethod

@HashCodeAndEqualsPlugin.Enhance
protected static class EqualsMethod.ConditionalReturn
extends java.lang.Object
implements StackManipulation

A conditional return aborts the equality computation if a given condition was reached.

Nested Class Summary

Nested classes/interfaces inherited from interface net.bytebuddy.implementation.bytecode.StackManipulation

StackManipulation.Compound, StackManipulation.Illegal, StackManipulation.Size, StackManipulation.Trivial

Field Summary

Fields

Modifier and Type	Field and Description
private static java.lang.Object[]	EMPTY An empty array.
private int	jumpCondition The conditional jump instruction upon which the return is not triggered.
private int	value The opcode for the value being returned.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ConditionalReturn(int jumpCondition) Creates a conditional return for a value of false.
private	ConditionalReturn(int jumpCondition, int value) Creates a conditional return.

Method Summary

Modifier and Type	Method and Description
StackManipulation.Size	apply(org.objectweb.asm.MethodVisitor methodVisitor, Implementation.Context implementationContext) Applies the stack manipulation that is described by this instance.
boolean	isValid() Determines if this stack manipulation is valid.
protected static EqualsMethod.ConditionalReturn	onIdentity() Returns a conditional return that returns if two reference values are identical.
protected static EqualsMethod.ConditionalReturn	onNonEqualInteger() Returns a conditional return that returns if two int values are not equal.
protected static EqualsMethod.ConditionalReturn	onNonIdentity() Returns a conditional return that returns if two reference values are not identical.
protected static EqualsMethod.ConditionalReturn	onNonZeroInteger() Returns a conditional return that returns on an int value of not 0.
protected static EqualsMethod.ConditionalReturn	onNullValue() Returns a conditional return that returns on a reference value of null.
protected static EqualsMethod.ConditionalReturn	onZeroInteger() Returns a conditional return that returns on an int value of 0.
protected StackManipulation	returningTrue() Returns a new stack manipulation that returns true for the given condition.

Methods inherited from class java.lang.Object

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

Field Detail

EMPTY

private static final java.lang.Object[] EMPTY

An empty array.

jumpCondition

private final int jumpCondition

The conditional jump instruction upon which the return is not triggered.

value

private final int value

The opcode for the value being returned.

Constructor Detail

ConditionalReturn

protected ConditionalReturn(int jumpCondition)

Creates a conditional return for a value of false.

Parameters:

jumpCondition - The opcode upon which the return is not triggered.

ConditionalReturn

private ConditionalReturn(int jumpCondition,
                          int value)

Creates a conditional return.

Parameters:

jumpCondition - The opcode upon which the return is not triggered.

value - The opcode for the value being returned.

Method Detail

onZeroInteger

protected static EqualsMethod.ConditionalReturn onZeroInteger()

Returns a conditional return that returns on an int value of 0.

Returns:

A conditional return that returns on an int value of 0.

onNonZeroInteger

protected static EqualsMethod.ConditionalReturn onNonZeroInteger()

Returns a conditional return that returns on an int value of not 0.

Returns:

A conditional return that returns on an int value of not 0.

onNullValue

protected static EqualsMethod.ConditionalReturn onNullValue()

Returns a conditional return that returns on a reference value of null.

Returns:

A conditional return that returns on a reference value of null.

onNonIdentity

protected static EqualsMethod.ConditionalReturn onNonIdentity()

Returns a conditional return that returns if two reference values are not identical.

Returns:

A conditional return that returns if two reference values are not identical.

onIdentity

protected static EqualsMethod.ConditionalReturn onIdentity()

Returns a conditional return that returns if two reference values are identical.

Returns:

A conditional return that returns if two reference values are identical.

onNonEqualInteger

protected static EqualsMethod.ConditionalReturn onNonEqualInteger()

Returns a conditional return that returns if two int values are not equal.

Returns:

A conditional return that returns if two int values are not equal.

returningTrue

protected StackManipulation returningTrue()

Returns a new stack manipulation that returns true for the given condition.

Returns:

A new stack manipulation that returns true for the given condition.

isValid

public boolean isValid()

Determines if this stack manipulation is valid.

Specified by:

isValid in interface StackManipulation

Returns:

If false, this manipulation cannot be applied and should throw an exception.

apply

public StackManipulation.Size apply(org.objectweb.asm.MethodVisitor methodVisitor,
                                    Implementation.Context implementationContext)

Applies the stack manipulation that is described by this instance.

Specified by:

apply in interface StackManipulation

Parameters:

methodVisitor - The method visitor used to write the method implementation to.

implementationContext - The context of the current implementation.

Returns:

The changes to the size of the operand stack that are implied by this stack manipulation.