Enum Class Duplication
- All Implemented Interfaces:
Serializable
,Comparable<Duplication>
,Constable
,StackManipulation
Duplicates a value that is lying on top of the stack.
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionprotected static enum
A duplication that flips a value over the second value on the operand stack.Nested classes/interfaces inherited from class java.lang.Enum
Enum.EnumDesc<E extends Enum<E>>
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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Enum Constant Summary
Enum Constants -
Field Summary
FieldsModifier and TypeFieldDescriptionprivate final int
The opcode that represents the manipulation.protected final StackManipulation.Size
The size representing the impact of applying the duplication onto the operand stack. -
Constructor Summary
ConstructorsModifierConstructorDescriptionprivate
Duplication
(StackSize stackSize, int opcode) Creates a new duplication. -
Method Summary
Modifier and TypeMethodDescriptionapply
(org.objectweb.asm.MethodVisitor methodVisitor, Implementation.Context implementationContext) Applies the stack manipulation that is described by this instance.abstract StackManipulation
flipOver
(TypeDefinition typeDefinition) Creates a duplication that flips the stack's top value over the second stack element.boolean
isValid()
Determines if this stack manipulation is valid.static Duplication
of
(TypeDefinition typeDefinition) Duplicates a value given its type.static Duplication
Returns the enum constant of this class with the specified name.static Duplication[]
values()
Returns an array containing the constants of this enum class, in the order they are declared.
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Enum Constant Details
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ZERO
A duplication of no values. This corresponds a no-op instruction. -
SINGLE
A duplication of a single-sized stack values. -
DOUBLE
A duplication of a double-sized stack value.
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Field Details
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size
The size representing the impact of applying the duplication onto the operand stack. -
opcode
private final int opcodeThe opcode that represents the manipulation.
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Constructor Details
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Duplication
Creates a new duplication.- Parameters:
stackSize
- The size representing the impact of applying the duplication onto the operand stack.opcode
- The opcode that represents the manipulation.
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Method Details
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values
Returns an array containing the constants of this enum class, in the order they are declared.- Returns:
- an array containing the constants of this enum class, in the order they are declared
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valueOf
Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)- Parameters:
name
- the name of the enum constant to be returned.- Returns:
- the enum constant with the specified name
- Throws:
IllegalArgumentException
- if this enum class has no constant with the specified nameNullPointerException
- if the argument is null
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of
Duplicates a value given its type.- Parameters:
typeDefinition
- The type to be duplicated.- Returns:
- A stack manipulation that duplicates the given type.
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flipOver
Creates a duplication that flips the stack's top value over the second stack element.- Parameters:
typeDefinition
- The type of the second element on the operand stack.- Returns:
- A stack manipulation that represents such a duplication flip.
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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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