38 lines
No EOL
988 B
JavaScript
38 lines
No EOL
988 B
JavaScript
import _xfBase from "./_xfBase.js";
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var XDropLast = /*#__PURE__*/function () {
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function XDropLast(n, xf) {
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if (n <= 0) {
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return xf;
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}
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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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XDropLast.prototype['@@transducer/init'] = _xfBase.init;
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XDropLast.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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XDropLast.prototype['@@transducer/step'] = function (result, input) {
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if (this.full) {
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result = this.xf['@@transducer/step'](result, this.acc[this.pos]);
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}
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this.store(input);
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return result;
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};
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XDropLast.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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return XDropLast;
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}();
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export default function _xdropLast(n) {
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return function (xf) {
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return new XDropLast(n, xf);
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};
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} |