Module java.base

Package java.lang.classfile.components^PREVIEW

Interface CodeLocalsShifter

All Superinterfaces:

ClassFileTransformPREVIEW<CodeTransformPREVIEW,CodeElementPREVIEW,CodeBuilderPREVIEW>, CodeTransformPREVIEW

public sealed interface CodeLocalsShifter
extends CodeTransformPREVIEW

CodeLocalsShifter is a preview API of the Java platform.

Programs can only use CodeLocalsShifter when preview features are enabled.

Preview features may be removed in a future release, or upgraded to permanent features of the Java platform.

CodeLocalsShifter^PREVIEW is a CodeTransform^PREVIEW shifting locals to newly allocated positions to avoid conflicts during code injection. Locals pointing to the receiver or to method arguments slots are never shifted. All locals pointing beyond the method arguments are re-indexed in order of appearance.

Since:

22

Nested Class Summary

Nested classes/interfaces declared in interface java.lang.classfile.ClassFileTransform^PREVIEW

ClassFileTransform.ResolvedTransformPREVIEW<E extends ClassFileElementPREVIEW>

Field Summary

Fields declared in interface java.lang.classfile.CodeTransform^PREVIEW

ACCEPT_ALL

Method Summary

Static Methods

Modifier and Type	Method	Description
static CodeLocalsShifterPREVIEW	of(AccessFlagsPREVIEW methodFlags, MethodTypeDesc methodDescriptor)	Creates a new instance of CodeLocalsShifterPREVIEW with fixed local slots calculated from provided method information.

Methods declared in interface java.lang.classfile.ClassFileTransform^PREVIEW

accept, atEnd, atStart

Methods declared in interface java.lang.classfile.CodeTransform^PREVIEW

andThen, resolve

Method Details

of

static CodeLocalsShifterPREVIEW of(AccessFlagsPREVIEW methodFlags,
 MethodTypeDesc methodDescriptor)

Creates a new instance of CodeLocalsShifter^PREVIEW with fixed local slots calculated from provided method information.

Parameters:

methodFlags - flags of the method to construct CodeLocalsShifter^PREVIEW for

methodDescriptor - descriptor of the method to construct CodeLocalsShifter^PREVIEW for

Returns:

new instance of CodeLocalsShifter^PREVIEW