jdk/src/java.base/share/classes/java/lang/classfile/attribute/SourceDebugExtensionAttribute.java
2025-01-15 02:04:01 +00:00

73 lines
3.0 KiB
Java

/*
* Copyright (c) 2022, 2025, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* 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.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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package java.lang.classfile.attribute;
import java.io.DataInput;
import java.lang.classfile.Attribute;
import java.lang.classfile.AttributeMapper;
import java.lang.classfile.AttributeMapper.AttributeStability;
import java.lang.classfile.Attributes;
import java.lang.classfile.ClassElement;
import java.lang.classfile.ClassFile;
import jdk.internal.classfile.impl.BoundAttribute;
import jdk.internal.classfile.impl.UnboundAttribute;
/**
* Models the {@link Attributes#sourceDebugExtension() SourceDebugExtension}
* attribute (JVMS {@jvms 4.7.11}), which stores arbitrary {@linkplain
* DataInput##modified-utf-8 modified UTF-8} data.
* <p>
* This attribute only appears on classes, and does not permit {@linkplain
* AttributeMapper#allowMultiple multiple instances} in a class. It has
* {@linkplain AttributeStability#STATELESS no data dependency}.
* <p>
* The attribute was introduced in the Java SE Platform version 5.0, major
* version {@value ClassFile#JAVA_5_VERSION}.
*
* @see Attributes#sourceDebugExtension()
* @jvms 4.7.11 The {@code SourceDebugExtension} Attribute
* @since 24
*/
public sealed interface SourceDebugExtensionAttribute
extends Attribute<SourceDebugExtensionAttribute>, ClassElement
permits BoundAttribute.BoundSourceDebugExtensionAttribute, UnboundAttribute.UnboundSourceDebugExtensionAttribute {
/**
* {@return the debug extension payload} The payload may denote a string
* longer than that which can be represented with a {@link String}.
*/
byte[] contents();
/**
* {@return a {@code SourceDebugExtension} attribute}
* @param contents the extension contents
*/
static SourceDebugExtensionAttribute of(byte[] contents) {
return new UnboundAttribute.UnboundSourceDebugExtensionAttribute(contents);
}
}