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Truffle is a multi-language framework for executing dynamic languages that achieves high performance when combined with Graal.

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/*
 * Copyright (c) 2013, 2018, 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
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 * 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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 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package com.oracle.truffle.api.utilities;

import com.oracle.truffle.api.Assumption;
import com.oracle.truffle.api.nodes.InvalidAssumptionException;

/**
 * An assumption that combines two other assumptions. A check on this assumption checks both of the
 * child assumptions.
 *
 * @since 0.8 or earlier
 */
public class UnionAssumption implements Assumption {

    private final String name;
    private final Assumption first;
    private final Assumption second;

    /** @since 0.8 or earlier */
    public UnionAssumption(String name, Assumption first, Assumption second) {
        this.name = name;
        this.first = first;
        this.second = second;
    }

    /** @since 0.8 or earlier */
    public UnionAssumption(Assumption first, Assumption second) {
        this(null, first, second);
    }

    /** @since 0.8 or earlier */
    @Override
    public void check() throws InvalidAssumptionException {
        first.check();
        second.check();
    }

    /** @since 0.8 or earlier */
    @Override
    public void invalidate() {
        first.invalidate();
        second.invalidate();
    }

    /** @since 0.33 */
    @Override
    public void invalidate(String message) {
        first.invalidate(message);
        second.invalidate(message);
    }

    /** @since 0.8 or earlier */
    @Override
    public String getName() {
        return name;
    }

    /** @since 0.8 or earlier */
    @Override
    public boolean isValid() {
        return first.isValid() && second.isValid();
    }

}