50 lines
1.2 KiB
JavaScript
50 lines
1.2 KiB
JavaScript
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import _concat from "./_concat.js";
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import _curry2 from "./_curry2.js";
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import _xfBase from "./_xfBase.js";
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var XAperture =
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/*#__PURE__*/
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function () {
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function XAperture(n, xf) {
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this.xf = xf;
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this.pos = 0;
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this.full = false;
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this.acc = new Array(n);
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}
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XAperture.prototype['@@transducer/init'] = _xfBase.init;
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XAperture.prototype['@@transducer/result'] = function (result) {
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this.acc = null;
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return this.xf['@@transducer/result'](result);
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};
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XAperture.prototype['@@transducer/step'] = function (result, input) {
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this.store(input);
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return this.full ? this.xf['@@transducer/step'](result, this.getCopy()) : result;
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};
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XAperture.prototype.store = function (input) {
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this.acc[this.pos] = input;
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this.pos += 1;
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if (this.pos === this.acc.length) {
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this.pos = 0;
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this.full = true;
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}
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};
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XAperture.prototype.getCopy = function () {
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return _concat(Array.prototype.slice.call(this.acc, this.pos), Array.prototype.slice.call(this.acc, 0, this.pos));
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};
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return XAperture;
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}();
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var _xaperture =
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/*#__PURE__*/
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_curry2(function _xaperture(n, xf) {
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return new XAperture(n, xf);
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});
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export default _xaperture;
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