Marc Mintel
5397309103
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83 lines
2.6 KiB
Plaintext
83 lines
2.6 KiB
Plaintext
import { NEGATIVE_ZERO, ZERO } from "../constants.js";
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import "../types/number.js";
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import { invariant, repeat } from "../utils.js";
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import { GetUnsignedRoundingMode } from "./GetUnsignedRoundingMode.js";
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import { ToRawFixed } from "./ToRawFixed.js";
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import { ToRawPrecision } from "./ToRawPrecision.js";
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/**
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* https://tc39.es/ecma402/#sec-formatnumberstring
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*/
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export function FormatNumericToString(intlObject, _x) {
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let x = _x;
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let sign;
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// -0
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if (x.isZero() && x.isNegative()) {
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sign = "negative";
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x = ZERO;
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} else {
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invariant(x.isFinite(), "NumberFormatDigitInternalSlots value is not finite");
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if (x.lessThan(0)) {
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sign = "negative";
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} else {
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sign = "positive";
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}
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if (sign === "negative") {
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x = x.negated();
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}
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}
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let result;
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const roundingType = intlObject.roundingType;
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const unsignedRoundingMode = GetUnsignedRoundingMode(intlObject.roundingMode, sign === "negative");
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switch (roundingType) {
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case "significantDigits":
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result = ToRawPrecision(x, intlObject.minimumSignificantDigits, intlObject.maximumSignificantDigits, unsignedRoundingMode);
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break;
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case "fractionDigits":
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result = ToRawFixed(x, intlObject.minimumFractionDigits, intlObject.maximumFractionDigits, intlObject.roundingIncrement, unsignedRoundingMode);
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break;
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default:
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let sResult = ToRawPrecision(x, intlObject.minimumSignificantDigits, intlObject.maximumSignificantDigits, unsignedRoundingMode);
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let fResult = ToRawFixed(x, intlObject.minimumFractionDigits, intlObject.maximumFractionDigits, intlObject.roundingIncrement, unsignedRoundingMode);
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if (intlObject.roundingType === "morePrecision") {
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if (sResult.roundingMagnitude <= fResult.roundingMagnitude) {
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result = sResult;
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} else {
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result = fResult;
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}
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} else {
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invariant(intlObject.roundingType === "lessPrecision", "Invalid roundingType");
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if (sResult.roundingMagnitude <= fResult.roundingMagnitude) {
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result = fResult;
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} else {
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result = sResult;
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}
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}
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break;
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}
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x = result.roundedNumber;
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let string = result.formattedString;
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if (intlObject.trailingZeroDisplay === "stripIfInteger" && x.isInteger()) {
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let i = string.indexOf(".");
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if (i > -1) {
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string = string.slice(0, i);
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}
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}
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const int = result.integerDigitsCount;
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const minInteger = intlObject.minimumIntegerDigits;
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if (int < minInteger) {
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const forwardZeros = repeat("0", minInteger - int);
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string = forwardZeros + string;
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}
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if (sign === "negative") {
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if (x.isZero()) {
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x = NEGATIVE_ZERO;
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} else {
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x = x.negated();
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}
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}
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return {
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roundedNumber: x,
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formattedString: string
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};
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}
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