net.bytebuddy.instrumentation.method.bytecode.stack.constant

Enum DefaultValue

java.lang.Object

java.lang.Enum<DefaultValue>

net.bytebuddy.instrumentation.method.bytecode.stack.constant.DefaultValue

All Implemented Interfaces:

Serializable, Comparable<DefaultValue>, StackManipulation

public enum DefaultValue
extends Enum<DefaultValue>
implements StackManipulation

Represents a stack assignment that loads the default value of a given type onto the stack.

Nested Class Summary

Nested classes/interfaces inherited from interface net.bytebuddy.instrumentation.method.bytecode.stack.StackManipulation

StackManipulation.Compound, StackManipulation.Illegal, StackManipulation.LegalTrivial, StackManipulation.Size

Enum Constant Summary

Enum Constants

Enum Constant and Description
ANY_REFERENCE The default value of a reference type which resembles the null reference.
DOUBLE The default value of a double.
FLOAT The default value of a float.
INTEGER The default value of a JVM integer which covers Java's int, boolean, byte, short and char values.
LONG The default value of a long.
VOID The default value of a void which resembles a no-op manipulation.

Method Summary

Modifier and Type	Method and Description
StackManipulation.Size	apply(org.objectweb.asm.MethodVisitor methodVisitor, Instrumentation.Context instrumentationContext) Applies the stack manipulation that is described by this instance.
boolean	isValid() Determines if this stack manipulation is valid.
static StackManipulation	of(TypeDescription typeDescription) Creates a stack assignment that loads the default value for a given type.
static DefaultValue	valueOf(String name) Returns the enum constant of this type with the specified name.
static DefaultValue[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

INTEGER

public static final DefaultValue INTEGER

The default value of a JVM integer which covers Java's int, boolean, byte, short and char values.

LONG

public static final DefaultValue LONG

The default value of a long.

FLOAT

public static final DefaultValue FLOAT

The default value of a float.

DOUBLE

public static final DefaultValue DOUBLE

The default value of a double.

VOID

public static final DefaultValue VOID

The default value of a void which resembles a no-op manipulation.

ANY_REFERENCE

public static final DefaultValue ANY_REFERENCE

The default value of a reference type which resembles the null reference.

Method Detail

values

public static DefaultValue[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DefaultValue c : DefaultValue.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static DefaultValue valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (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 type has no constant with the specified name

NullPointerException - if the argument is null

of

public static StackManipulation of(TypeDescription typeDescription)

Creates a stack assignment that loads the default value for a given type.

Parameters:

typeDescription - The type for which a default value should be loaded onto the operand stack.

Returns:

A stack manipulation loading the default value for the given type.

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(org.objectweb.asm.MethodVisitor methodVisitor,
                                    Instrumentation.Context instrumentationContext)

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.

instrumentationContext - The context of the current instrumentation.

Returns:

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