// -*- mode: typescript; indent-tabs-mode: nil; js-basic-offset: 4 -*-
//
// This file is part of Genie
//
// Copyright 2020 The Board of Trustees of the Leland Stanford Junior University
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//    http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
// Author: Giovanni Campagna <gcampagn@cs.stanford.edu>

interface EqualityComparable {
    equals(x : this) : boolean;
}

export function arraySubset(small : EqualityComparable[],
                            big : EqualityComparable[]) : boolean {
    for (const element of small) {
        let good = false;
        for (const candidate of big) {
            if (candidate.equals(element)) {
                good = true;
                break;
            }
        }
        if (!good)
            return false;
    }
    return true;
}