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/*
 * Copyright (c) 2022, 2024, 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
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 * 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 io.github.dmlloyd.classfile.constantpool;

import java.lang.constant.ConstantDesc;
import java.lang.constant.DirectMethodHandleDesc;

import io.github.dmlloyd.classfile.impl.AbstractPoolEntry;
import io.github.dmlloyd.classfile.extras.PreviewFeature;

/**
 * Models a {@code CONSTANT_MethodHandle_info} constant in the constant pool of a
 * classfile.
 * @jvms 4.4.8 The CONSTANT_MethodHandle_info Structure
 *
 * @since 22
 */
@PreviewFeature(feature = PreviewFeature.Feature.CLASSFILE_API)
public sealed interface MethodHandleEntry
        extends LoadableConstantEntry
        permits AbstractPoolEntry.MethodHandleEntryImpl {

    @Override
    default ConstantDesc constantValue() {
        return asSymbol();
    }

    /**
     * {@return the reference kind of this method handle (JVMS {@jvms 4.4.8})}
     * @see java.lang.invoke.MethodHandleInfo
     */
    int kind();

    /**
     * {@return the constant pool entry describing the method}
     */
    MemberRefEntry reference();

    /**
     * {@return a symbolic descriptor for this method handle}
     */
    DirectMethodHandleDesc asSymbol();
}