io.github.dmlloyd.classfile.Label Maven / Gradle / Ivy
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
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* 2 along with this work; if not, write to the Free Software Foundation,
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package io.github.dmlloyd.classfile;
import io.github.dmlloyd.classfile.impl.LabelImpl;
import io.github.dmlloyd.classfile.extras.PreviewFeature;
/**
* A marker for a position within the instructions of a method body. The
* association between a label's identity and the position it represents is
* managed by the entity managing the method body (a {@link CodeModel} or {@link
* CodeBuilder}), not the label itself; this allows the same label to have a
* meaning both in an existing method (as managed by a {@linkplain CodeModel})
* and in the transformation of that method (as managed by a {@linkplain
* CodeBuilder}), while corresponding to different positions in each. When
* traversing the elements of a {@linkplain CodeModel}, {@linkplain Label}
* markers will be delivered at the position to which they correspond. A label
* can be bound to the current position within a {@linkplain CodeBuilder} via
* {@link CodeBuilder#labelBinding(Label)} or {@link CodeBuilder#with(ClassFileElement)}.
*
* @since 22
*/
@PreviewFeature(feature = PreviewFeature.Feature.CLASSFILE_API)
public sealed interface Label
permits LabelImpl {
}