Module java.base

Package java.lang.classfile^PREVIEW

Interface MethodBuilder

All Superinterfaces:

ClassFileBuilderPREVIEW<MethodElementPREVIEW,MethodBuilderPREVIEW>, Consumer<MethodElementPREVIEW>

public sealed interface MethodBuilder
extends ClassFileBuilderPREVIEW<MethodElementPREVIEW,MethodBuilderPREVIEW>

MethodBuilder is a preview API of the Java platform.

Programs can only use MethodBuilder when preview features are enabled.

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

A builder for methods. Builders are not created directly; they are passed to handlers by methods such as ClassBuilder.withMethod(Utf8Entry, Utf8Entry, int, Consumer)^PREVIEW or to method transforms. The elements of a method can be specified abstractly (by passing a MethodElement^PREVIEW to ClassFileBuilder.with(ClassFileElement)^PREVIEW or concretely by calling the various withXxx methods.

Since:

22

See Also:

• MethodTransform^PREVIEW

Method Summary

Modifier and Type	Method	Description
Optional<MethodModelPREVIEW>	original()	Returns the MethodModelPREVIEW representing the method being transformed, if this method builder represents the transformation of some MethodModelPREVIEW.
MethodBuilderPREVIEW	transformCode(CodeModelPREVIEW code, CodeTransformPREVIEW transform)	Build the method body for this method by transforming the body of another method.
MethodBuilderPREVIEW	withCode(Consumer<? super CodeBuilderPREVIEW> code)	Build the method body for this method.
default MethodBuilderPREVIEW	withFlags(int flags)	Sets the method access flags.
default MethodBuilderPREVIEW	withFlags(AccessFlag... flags)	Sets the method access flags.

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

accept, canWriteDirect, constantPool, transform, with

Methods declared in interface java.util.function.Consumer

andThen

Method Details

original

Optional<MethodModelPREVIEW> original()

Returns the MethodModel^PREVIEW representing the method being transformed, if this method builder represents the transformation of some MethodModel^PREVIEW.

Returns:

the MethodModel^PREVIEW representing the method being transformed, if this method builder represents the transformation of some MethodModel^PREVIEW

withFlags

default MethodBuilderPREVIEW withFlags(int flags)

Sets the method access flags.

Parameters:

flags - the access flags, as a bit mask

Returns:

this builder

withFlags

default MethodBuilderPREVIEW withFlags(AccessFlag... flags)

Sets the method access flags.

Parameters:

flags - the access flags, as a bit mask

Returns:

this builder

withCode

MethodBuilderPREVIEW withCode(Consumer<? super CodeBuilderPREVIEW> code)

Build the method body for this method.

Parameters:

code - a handler receiving a CodeBuilder^PREVIEW

Returns:

this builder

transformCode

MethodBuilderPREVIEW transformCode(CodeModelPREVIEW code,
 CodeTransformPREVIEW transform)

Build the method body for this method by transforming the body of another method.

Implementation Note:

This method behaves as if:

    withCode(b -> b.transformCode(code, transform));

Parameters:

code - the method body to be transformed

transform - the transform to apply to the method body

Returns:

this builder