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Top Description Methods
java.lang.classfile.instruction

public sealed Interface LabelTarget

extends PseudoInstruction
permits LabelImpl
Known Direct Implementers
jdk.internal.classfile.impl.LabelImpl
Imports
java.lang.classfile.CodeBuilder, .CodeElement, .CodeModel, .CodeTransform, .Label, .PseudoInstruction, java.lang.classfile.attribute.CodeAttribute, jdk.internal.classfile.impl.LabelImpl

A pseudo-instruction which indicates that the specified label corresponds to the current position in the Code attribute. Delivered as a CodeElement during traversal of the elements of a CodeModel.

This can be used to inspect the target position of labels across transformations, as bci is not stable.

When passed to a CodeBuilder, this pseudo-instruction sets the specified label to be bound at the current position in the builder.

By design, LabelTarget cannot be created by users and can only be read from a code model. Use CodeBuilder::labelBinding to bind arbitrary labels to a CodeBuilder.

For a CodeBuilder cob, a LabelTarget lt, these two calls are equivalent:

cob.with(lt); cob.labelBinding(lt.label());
cob.with(lt);
cob.labelBinding(lt.label());
Since
24
See Also
Label, CodeBuilder::labelBinding

Method Summary

Modifier and TypeMethod and Description
public Label

Returns:

the label corresponding to this target
label
()

Returns the label corresponding to this target.

Method Detail

labelback to summary
public Label label()

Returns the label corresponding to this target.

Returns:Label

the label corresponding to this target