Package net.bytebuddy.asm
Class Advice.AssignReturned.DefaultValueSkip
java.lang.Object
net.bytebuddy.asm.Advice.AssignReturned.DefaultValueSkip
- All Implemented Interfaces:
StackManipulation
- Enclosing class:
Advice.AssignReturned
@Enhance
protected static class Advice.AssignReturned.DefaultValueSkip
extends Object
implements StackManipulation
A stack manipulation that applies a null-check on the returned value which indicates if an assignment
should be skipped, if discovered.
-
Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionprotected static enum
A dispatcher for skipping a default value.Nested classes/interfaces inherited from interface net.bytebuddy.implementation.bytecode.StackManipulation
StackManipulation.AbstractBase, StackManipulation.Compound, StackManipulation.Illegal, StackManipulation.Simple, StackManipulation.Size, StackManipulation.Trivial
-
Field Summary
FieldsModifier and TypeFieldDescriptionprivate final Advice.AssignReturned.DefaultValueSkip.Dispatcher
The dispatcher to use.private final int
The offset of the value of the returned type.private final StackManipulation
The wrapped stack manipulation in case the value is not a default value.private final Advice.StackMapFrameHandler.ForPostProcessor
The stack map frame handler to use. -
Constructor Summary
ConstructorsModifierConstructorDescriptionprotected
DefaultValueSkip
(StackManipulation stackManipulation, Advice.StackMapFrameHandler.ForPostProcessor stackMapFrameHandler, int offset, Advice.AssignReturned.DefaultValueSkip.Dispatcher dispatcher) Creates a null-check wrapper. -
Method Summary
Modifier and TypeMethodDescriptionapply
(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 StackManipulation
of
(StackManipulation stackManipulation, Advice.StackMapFrameHandler.ForPostProcessor stackMapFrameHandler, int offset, TypeDefinition typeDefinition) Resolves a skipping stack manipulation for the supplied type.
-
Field Details
-
stackManipulation
The wrapped stack manipulation in case the value is not a default value. -
stackMapFrameHandler
The stack map frame handler to use. -
offset
private final int offsetThe offset of the value of the returned type. -
dispatcher
The dispatcher to use.
-
-
Constructor Details
-
DefaultValueSkip
protected DefaultValueSkip(StackManipulation stackManipulation, Advice.StackMapFrameHandler.ForPostProcessor stackMapFrameHandler, int offset, Advice.AssignReturned.DefaultValueSkip.Dispatcher dispatcher) Creates a null-check wrapper.- Parameters:
stackManipulation
- The wrapped stack manipulation in case the value is not a default value.stackMapFrameHandler
- The stack map frame handler to use.offset
- The offset of the value of the returned type.dispatcher
- The dispatcher to use.
-
-
Method Details
-
of
protected static StackManipulation of(StackManipulation stackManipulation, Advice.StackMapFrameHandler.ForPostProcessor stackMapFrameHandler, int offset, TypeDefinition typeDefinition) Resolves a skipping stack manipulation for the supplied type.- Parameters:
stackManipulation
- The stack manipulation to wrap.stackMapFrameHandler
- The stack map frame handler to use.offset
- The offset of the value of the returned type.typeDefinition
- The type that is returned by the advice method.- Returns:
- A suitable stack manipulation.
-
isValid
public boolean isValid()Determines if this stack manipulation is valid.- Specified by:
isValid
in interfaceStackManipulation
- 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 interfaceStackManipulation
- 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.
-