src/java.base/share/classes/jdk/internal/classfile/attribute/CompilationIDAttribute.java - master - niceSOFT/openjdk21

src/java.base/share/classes/jdk/internal/classfile/attribute/CompilationIDAttribute.java

67 строк3 KB

Adam Sotona

8294982: Implementation of Classfile API

09 мар 2023, 18:23

09 мар 2023, 18:234655b79

/*
 * Copyright (c) 2022, 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.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
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 */

package jdk.internal.classfile.attribute;

import jdk.internal.classfile.Attribute;
import jdk.internal.classfile.ClassElement;
import jdk.internal.classfile.constantpool.Utf8Entry;
import jdk.internal.classfile.impl.BoundAttribute;
import jdk.internal.classfile.impl.TemporaryConstantPool;
import jdk.internal.classfile.impl.UnboundAttribute;

/**
 * Models the {@code CompilationID} attribute (@@@ need reference), which can
 * appear on classes and records the compilation time of the class.  Delivered
 * as a {@link jdk.internal.classfile.ClassElement} when traversing the elements of
 * a {@link jdk.internal.classfile.ClassModel}.
 */
public sealed interface CompilationIDAttribute
        extends Attribute<CompilationIDAttribute>, ClassElement
        permits BoundAttribute.BoundCompilationIDAttribute,
                UnboundAttribute.UnboundCompilationIDAttribute {

    /**
     * {@return the compilation ID}  The compilation ID is the value of
     * {@link System#currentTimeMillis()} when the classfile is generated.
     */
    Utf8Entry compilationId();

    /**
     * {@return a {@code CompilationID} attribute}
     * @param id the compilation ID
     */
    static CompilationIDAttribute of(Utf8Entry id) {
        return new UnboundAttribute.UnboundCompilationIDAttribute(id);
    }

    /**
     * {@return a {@code CompilationID} attribute}
     * @param id the compilation ID
     */
    static CompilationIDAttribute of(String id) {
        return new UnboundAttribute.UnboundCompilationIDAttribute(TemporaryConstantPool.INSTANCE.utf8Entry(id));
    }
}