datascript/datascript.js

Immutable in-memory triplestore with Datalog queries

/**
 * Datascript v1.7.5
 *
 * Copyright 2014-2021 Nikita Prokopov
 *
 * Licensed under Eclipse Public License;
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * https://github.com/tonsky/datascript/blob/master/LICENSE
 *
 * 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.
 */

(function (definition) {
    // This file will function properly as a <script> tag, or a module
    // using CommonJS and NodeJS or RequireJS module formats. In
    // Common/Node/RequireJS, the module exports the mori API and when
    // executed as a simple <script>, it creates a mori global
    // instead.

    // Wrapper gratefully adapted from:
    // https://github.com/kriskowal/q/blob/v1/q.js
    // https://github.com/swannodette/mori/blob/master/support/wrapper.js

    // CommonJS
    if (typeof exports === "object") {
        module.exports = definition();

    // RequireJS
    } else if (typeof define === "function" && define.amd) {
        define(definition);

    // <script>
    } else {
        datascript = definition();
    }
})(function () {
    return function () {
if(typeof Math.imul == "undefined" || (Math.imul(0xffffffff,5) == 0)) {
    Math.imul = function (a, b) {
        var ah  = (a >>> 16) & 0xffff;
        var al = a & 0xffff;
        var bh  = (b >>> 16) & 0xffff;
        var bl = b & 0xffff;
        // the shift by 0 fixes the sign on the high part
        // the final |0 converts the unsigned value into a signed value
        return ((al * bl) + (((ah * bl + al * bh) << 16) >>> 0)|0);
    }
}


/*

 Copyright The Closure Library Authors.
 SPDX-License-Identifier: Apache-2.0
*/
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