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The GraalVM compiler and the Graal-truffle optimizer.

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/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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package jdk.graal.compiler.replacements.classfile;

import jdk.vm.ci.meta.JavaMethod;
import jdk.vm.ci.meta.ResolvedJavaMethod;

public interface ConstantPoolPatch {

    JavaMethod lookupMethod(int index, int opcode, ResolvedJavaMethod caller);

    /**
     * Looks up a constant at the specified index.
     *
     * If {@code resolve == false} and the denoted constant is of type {@code JVM_CONSTANT_Dynamic},
     * {@code JVM_CONSTANT_MethodHandle} or {@code JVM_CONSTANT_MethodType} and it's not yet
     * resolved then {@code null} is returned.
     *
     * @param cpi the constant pool index
     * @return the {@code Constant} or {@code JavaType} instance representing the constant pool
     *         entry
     */
    Object lookupConstant(int cpi, boolean resolve);
}