Package net.bytebuddy.asm
Class Advice.AssignReturned.DefaultValueSkip
- java.lang.Object
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- net.bytebuddy.asm.Advice.AssignReturned.DefaultValueSkip
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- All Implemented Interfaces:
StackManipulation
- Enclosing class:
- Advice.AssignReturned
@Enhance protected static class Advice.AssignReturned.DefaultValueSkip extends java.lang.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.
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Nested Class Summary
Nested Classes Modifier and Type Class Description protected static class
Advice.AssignReturned.DefaultValueSkip.Dispatcher
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
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Field Summary
Fields Modifier and Type Field Description private Advice.AssignReturned.DefaultValueSkip.Dispatcher
dispatcher
The dispatcher to use.private int
offset
The offset of the value of the returned type.private StackManipulation
stackManipulation
The wrapped stack manipulation in case the value is not a default value.private Advice.StackMapFrameHandler.ForPostProcessor
stackMapFrameHandler
The stack map frame handler to use.
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Constructor Summary
Constructors Modifier Constructor Description protected
DefaultValueSkip(StackManipulation stackManipulation, Advice.StackMapFrameHandler.ForPostProcessor stackMapFrameHandler, int offset, Advice.AssignReturned.DefaultValueSkip.Dispatcher dispatcher)
Creates a null-check wrapper.
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods Modifier and Type Method 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 StackManipulation
of(StackManipulation stackManipulation, Advice.StackMapFrameHandler.ForPostProcessor stackMapFrameHandler, int offset, TypeDefinition typeDefinition)
Resolves a skipping stack manipulation for the supplied type.
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Field Detail
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stackManipulation
private final StackManipulation stackManipulation
The wrapped stack manipulation in case the value is not a default value.
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stackMapFrameHandler
private final Advice.StackMapFrameHandler.ForPostProcessor stackMapFrameHandler
The stack map frame handler to use.
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offset
private final int offset
The offset of the value of the returned type.
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dispatcher
private final Advice.AssignReturned.DefaultValueSkip.Dispatcher dispatcher
The dispatcher to use.
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Constructor Detail
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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.
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Method Detail
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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.
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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.
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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.
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