/*
 * Copyright (c) 2019, 2020, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * The Universal Permissive License (UPL), Version 1.0
 *
 * Subject to the condition set forth below, permission is hereby granted to any
 * person obtaining a copy of this software, associated documentation and/or
 * data (collectively the "Software"), free of charge and under any and all
 * copyright rights in the Software, and any and all patent rights owned or
 * freely licensable by each licensor hereunder covering either (i) the
 * unmodified Software as contributed to or provided by such licensor, or (ii)
 * the Larger Works (as defined below), to deal in both
 *
 * (a) the Software, and
 *
 * (b) any piece of software and/or hardware listed in the lrgrwrks.txt file if
 * one is included with the Software each a "Larger Work" to which the Software
 * is contributed by such licensors),
 *
 * without restriction, including without limitation the rights to copy, create
 * derivative works of, display, perform, and distribute the Software and make,
 * use, sell, offer for sale, import, export, have made, and have sold the
 * Software and the Larger Work(s), and to sublicense the foregoing rights on
 * either these or other terms.
 *
 * This license is subject to the following condition:
 *
 * The above copyright notice and either this complete permission notice or at a
 * minimum a reference to the UPL must be included in all copies or substantial
 * portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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package org.graalvm.wasm;

public final class ImportDescriptor {
    public final String moduleName;
    public final String memberName;
    public final int identifier;

    public ImportDescriptor(String moduleName, String memberName, int identifier) {
        this.moduleName = moduleName;
        this.memberName = memberName;
        this.identifier = identifier;
    }

    @Override
    public int hashCode() {
        return moduleName.hashCode() ^ memberName.hashCode() ^ Integer.hashCode(identifier);
    }

    @Override
    public boolean equals(Object object) {
        if (!(object instanceof ImportDescriptor)) {
            return false;
        }
        final ImportDescriptor that = (ImportDescriptor) object;
        return that.moduleName.equals(this.moduleName) && that.memberName.equals(this.memberName) && that.identifier == this.identifier;
    }

    @Override
    public String toString() {
        return String.format("(import %s from %s)", memberName, moduleName);
    }
}