net.bytebuddy.implementation

Class EqualsMethod.NullValueGuard.UsingJump.BeforeInstruction

java.lang.Object

net.bytebuddy.implementation.EqualsMethod.NullValueGuard.UsingJump.BeforeInstruction

All Implemented Interfaces:

StackManipulation

Enclosing class:

EqualsMethod.NullValueGuard.UsingJump

protected static class EqualsMethod.NullValueGuard.UsingJump.BeforeInstruction
extends Object
implements StackManipulation

The stack manipulation to apply before the equality computation.

Nested Class Summary

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

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

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	BeforeInstruction(MethodDescription instrumentedMethod, Label firstValueNull, Label secondValueNull) Creates an instruction to execute before an equality check.

Method Summary

Modifier and Type	Method and Description
StackManipulation.Size	apply(MethodVisitor methodVisitor, Implementation.Context implementationContext) Applies the stack manipulation that is described by this instance.
boolean	isValid() Determines if this stack manipulation is valid.

Methods inherited from class java.lang.Object

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

Constructor Detail

BeforeInstruction

protected BeforeInstruction(MethodDescription instrumentedMethod,
                            Label firstValueNull,
                            Label secondValueNull)

Creates an instruction to execute before an equality check.

Parameters:

instrumentedMethod - The instrumented method.

firstValueNull - The label to jump to if the first value is null whereas the second value is not null.

secondValueNull - The label to jump to if the second value is null.

Method Detail

isValid

public boolean isValid()

Description copied from interface: StackManipulation

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(MethodVisitor methodVisitor,
                                    Implementation.Context implementationContext)

Description copied from interface: StackManipulation

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.