Function init

docs/app/js/sanddance-app.js:108146–108181

* Initialize this pulse based on the values of another pulse. This method * is used internally by fork to initialize a new forked tuple. * The dataflow, time stamp and field modification values are copied over. * By default, new empty ADD, REM and MOD arrays are created. * @param

(src, flags)

   *   to the new pulse. Use the NO_SOURCE flag to enforce a null source.
   * @return {Pulse} - Returns this Pulse instance.
   */ init (src, flags) {
        const p = this;
        p.stamp = src.stamp;
        p.encode = src.encode;
        if (src.fields && !(flags & NO_FIELDS)) p.fields = src.fields;
        if (flags & ADD) {
            p.addF = src.addF;
            p.add = src.add;
        } else {
            p.addF = null;
            p.add = [];
        }
        if (flags & REM) {
            p.remF = src.remF;
            p.rem = src.rem;
        } else {
            p.remF = null;
            p.rem = [];
        }
        if (flags & MOD) {
            p.modF = src.modF;
            p.mod = src.mod;
        } else {
            p.modF = null;
            p.mod = [];
        }
        if (flags & NO_SOURCE) {
            p.srcF = null;
            p.source = null;
        } else {
            p.srcF = src.srcF;
            p.source = src.source;
            if (src.cleans) p.cleans = src.cleans;
        }
        return p;
    },
    /**
   * Schedules a function to run after pulse propagation completes.
   * @param {function} func - The function to run.