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net.bytebuddy.implementation.bytecode.constant

public Class FieldConstant

extends AbstractBase
Class Inheritance
Imports
net.bytebuddy.description.field.FieldDescription, net.bytebuddy.description.method.MethodDescription, net.bytebuddy.description.type.TypeDescription, net.bytebuddy.implementation.Implementation, net.bytebuddy.implementation.bytecode.StackManipulation, net.bytebuddy.implementation.bytecode.member.FieldAccess, .MethodInvocation, net.bytebuddy.utility.nullability.MaybeNull, net.bytebuddy.jar.asm.MethodVisitor, java.lang.reflect.Field
Represents a Field constant for a given type.

Nested and Inner Type Summary

Modifier and TypeClass and Description
protected static class
FieldConstant.Cached

A cached version of a FieldConstant.

Field Summary

Modifier and TypeField and Description
private final FieldDescription.InDefinedShape
fieldDescription

The field to be represent as a Field.

Constructor Summary

AccessConstructor and Description
public
FieldConstant(FieldDescription.InDefinedShape
The field to be represent as a Field.
fieldDescription)

Creates a new field constant.

Method Summary

Modifier and TypeMethod and Description
public StackManipulation.Size
apply(MethodVisitor
The method visitor used to write the method implementation to.
methodVisitor, Implementation.Context
The context of the current implementation.
implementationContext)

Implements net.bytebuddy.implementation.bytecode.StackManipulation.apply.

Applies the stack manipulation that is described by this instance.
public StackManipulation

Returns:

A cached version of this field constant.
cached()

Returns a cached version of this field constant.

public boolean
equals(Object
the reference object with which to compare.
other)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.
public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for the object.
Inherited from net.bytebuddy.implementation.bytecode.StackManipulation.AbstractBase:
isValid

Field Detail

fieldDescriptionback to summary
private final FieldDescription.InDefinedShape fieldDescription

The field to be represent as a Field.

Constructor Detail

FieldConstantback to summary
public FieldConstant(FieldDescription.InDefinedShape fieldDescription)

Creates a new field constant.

Parameters
fieldDescription:FieldDescription.InDefinedShape

The field to be represent as a Field.

Method Detail

applyback to summary
public StackManipulation.Size apply(MethodVisitor methodVisitor, Implementation.Context implementationContext)

Implements net.bytebuddy.implementation.bytecode.StackManipulation.apply.

Doc from net.bytebuddy.implementation.bytecode.StackManipulation.apply.

Applies the stack manipulation that is described by this instance.

Parameters
methodVisitor:MethodVisitor

The method visitor used to write the method implementation to.

implementationContext:Implementation.Context

The context of the current implementation.

Returns:StackManipulation.Size

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

cachedback to summary
public StackManipulation cached()

Returns a cached version of this field constant.

Returns:StackManipulation

A cached version of this field constant.

equalsback to summary
public boolean equals(Object other)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
other:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object.

Annotations
@Override
net.bytebuddy.implementation.bytecode.constant back to summary

protected Class FieldConstant.Cached

extends Object
implements StackManipulation
Class Inheritance
  • java.lang.Object
  • net.bytebuddy.implementation.bytecode.constant.FieldConstant.Cached
All Implemented Interfaces
net.bytebuddy.implementation.bytecode.StackManipulation
A cached version of a FieldConstant.

Field Summary

Modifier and TypeField and Description
private final StackManipulation
fieldConstant

The field constant stack manipulation.

Constructor Summary

AccessConstructor and Description
public
Cached(StackManipulation
The field constant stack manipulation.
fieldConstant)

Creates a new cached version of a field constant.

Method Summary

Modifier and TypeMethod and Description
public StackManipulation.Size
apply(MethodVisitor
The method visitor used to write the method implementation to.
methodVisitor, Implementation.Context
The context of the current implementation.
implementationContext)

Implements net.bytebuddy.implementation.bytecode.StackManipulation.apply.

Applies the stack manipulation that is described by this instance.
public boolean
equals(Object
the reference object with which to compare.
other)

Overrides java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.
public int
hashCode()

Overrides java.lang.Object.hashCode.

Returns a hash code value for the object.
public boolean
isValid()

Implements net.bytebuddy.implementation.bytecode.StackManipulation.isValid.

Determines if this stack manipulation is valid.
Inherited from java.lang.Object:
clonefinalizegetClassnotifynotifyAlltoStringwaitwaitwait

Field Detail

fieldConstantback to summary
private final StackManipulation fieldConstant

The field constant stack manipulation.

Constructor Detail

Cachedback to summary
public Cached(StackManipulation fieldConstant)

Creates a new cached version of a field constant.

Parameters
fieldConstant:StackManipulation

The field constant stack manipulation.

Method Detail

applyback to summary
public StackManipulation.Size apply(MethodVisitor methodVisitor, Implementation.Context implementationContext)

Implements net.bytebuddy.implementation.bytecode.StackManipulation.apply.

Doc from net.bytebuddy.implementation.bytecode.StackManipulation.apply.

Applies the stack manipulation that is described by this instance.

Parameters
methodVisitor:MethodVisitor

The method visitor used to write the method implementation to.

implementationContext:Implementation.Context

The context of the current implementation.

Returns:StackManipulation.Size

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

equalsback to summary
public boolean equals(Object other)

Overrides java.lang.Object.equals.

Doc from java.lang.Object.equals.

Indicates whether some other object is "equal to" this one.

The equals method implements an equivalence relation on non-null object references:

  • It is reflexive: for any non-null reference value x, x.equals(x) should return true.
  • It is symmetric: for any non-null reference values x and y, x.equals(y) should return true if and only if y.equals(x) returns true.
  • It is transitive: for any non-null reference values x, y, and z, if x.equals(y) returns true and y.equals(z) returns true, then x.equals(z) should return true.
  • It is consistent: for any non-null reference values x and y, multiple invocations of x.equals(y) consistently return true or consistently return false, provided no information used in equals comparisons on the objects is modified.
  • For any non-null reference value x, x.equals(null) should return false.

An equivalence relation partitions the elements it operates on into equivalence classes; all the members of an equivalence class are equal to each other. Members of an equivalence class are substitutable for each other, at least for some purposes.

Parameters
other:Object

the reference object with which to compare.

Returns:boolean

true if this object is the same as the obj argument; false otherwise.

Annotations
@Override
hashCodeback to summary
public int hashCode()

Overrides java.lang.Object.hashCode.

Doc from java.lang.Object.hashCode.

Returns a hash code value for the object. This method is supported for the benefit of hash tables such as those provided by java.util.HashMap.

The general contract of hashCode is:

  • Whenever it is invoked on the same object more than once during an execution of a Java application, the hashCode method must consistently return the same integer, provided no information used in equals comparisons on the object is modified. This integer need not remain consistent from one execution of an application to another execution of the same application.
  • If two objects are equal according to the equals method, then calling the hashCode method on each of the two objects must produce the same integer result.
  • It is not required that if two objects are unequal according to the equals method, then calling the hashCode method on each of the two objects must produce distinct integer results. However, the programmer should be aware that producing distinct integer results for unequal objects may improve the performance of hash tables.
Returns:int

a hash code value for this object.

Annotations
@Override
isValidback to summary
public boolean isValid()

Implements net.bytebuddy.implementation.bytecode.StackManipulation.isValid.

Doc from net.bytebuddy.implementation.bytecode.StackManipulation.isValid.

Determines if this stack manipulation is valid.

Returns:boolean

If false, this manipulation cannot be applied and should throw an exception.