31 lines
858 B
TypeScript
31 lines
858 B
TypeScript
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import IntValidator from "./IntValidator"
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import { Translation } from "../../i18n/Translation"
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import Translations from "../../i18n/Translations"
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export default class NatValidator extends IntValidator {
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constructor(name?: string, explanation?: string) {
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super(name ?? "nat", explanation ?? "A whole, positive number or zero")
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}
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isValid(str): boolean {
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if (str === undefined) {
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return false
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}
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str = "" + str
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return str.indexOf(".") < 0 && !isNaN(Number(str)) && Number(str) >= 0
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}
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getFeedback(s: string): Translation {
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const spr = super.getFeedback(s)
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if (spr !== undefined) {
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return spr
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}
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const n = Number(s)
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if (n < 0) {
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return Translations.t.validation.nat.mustBePositive
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}
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return undefined
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}
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}
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