@dooboostore/dom-render/iterators/Range.js

html view template engine

// within rangeResult.ts
// @ts-ignore
export class RangeResult {
    constructor(value, done) {
        this.done = done;
        this.value = value !== null && value !== void 0 ? value : 0;
    }
}
export class RangeIterator {
    constructor(first, last, step) {
        this._current = this._first = first;
        this._last = last;
        this._step = step;
    }
    next(value) {
        let r;
        if (this._first < this._last && this._current < this._last) {
            r = new RangeResult(this._current, false);
            this._current += this._step;
        }
        else if (this._first < this._last && this._current === this._last) {
            r = new RangeResult(this._current, false);
            this._current += this._step;
        }
        else if (this._first > this._last && this._current > this._last) {
            r = new RangeResult(this._current, false);
            this._current -= this._step;
        }
        else if (this._first > this._last && this._current === this._last) {
            r = new RangeResult(this._current, false);
            this._current -= this._step;
        }
        else if (this._current === this._last) {
            r = new RangeResult(this._current, false);
            this._current -= this._step;
        }
        else {
            r = new RangeResult(undefined, true);
        }
        return r;
    }
}
export class Range {
    constructor(first, last, step = 1) {
        this.first = first;
        this.last = last;
        this.step = step;
        this.isRange = true;
    }
    [Symbol.iterator]() {
        return new RangeIterator(this.first, this.last, this.step);
    }
    map(callbackfn, thisArg) {
        return Array.from(this).map(callbackfn);
    }
    static range(first, last, step = 1) {
        if (typeof first === 'number' && last === undefined) {
            return new Range(0, first, step);
        }
        else if (typeof first === 'string') {
            const [_first, _last = '0'] = first.split('..');
            const [__last, _step = '1'] = _last.split(',');
            return new Range(Number(_first.trim()), Number(__last.trim()), Number(_step.trim()));
        }
        else {
            return new Range(first, last !== null && last !== void 0 ? last : 0, step);
        }
    }
}
//# sourceMappingURL=Range.js.map