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46 lines
1.5 KiB
46 lines
1.5 KiB
import { Scalar } from '../../nodes/Scalar.js'; |
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import { stringifyNumber } from '../../stringify/stringifyNumber.js'; |
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const floatNaN = { |
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identify: value => typeof value === 'number', |
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default: true, |
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tag: 'tag:yaml.org,2002:float', |
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test: /^[-+]?\.(?:inf|Inf|INF|nan|NaN|NAN)$/, |
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resolve: (str) => str.slice(-3).toLowerCase() === 'nan' |
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? NaN |
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: str[0] === '-' |
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? Number.NEGATIVE_INFINITY |
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: Number.POSITIVE_INFINITY, |
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stringify: stringifyNumber |
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}; |
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const floatExp = { |
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identify: value => typeof value === 'number', |
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default: true, |
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tag: 'tag:yaml.org,2002:float', |
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format: 'EXP', |
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test: /^[-+]?(?:[0-9][0-9_]*)?(?:\.[0-9_]*)?[eE][-+]?[0-9]+$/, |
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resolve: (str) => parseFloat(str.replace(/_/g, '')), |
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stringify(node) { |
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const num = Number(node.value); |
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return isFinite(num) ? num.toExponential() : stringifyNumber(node); |
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} |
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}; |
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const float = { |
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identify: value => typeof value === 'number', |
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default: true, |
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tag: 'tag:yaml.org,2002:float', |
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test: /^[-+]?(?:[0-9][0-9_]*)?\.[0-9_]*$/, |
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resolve(str) { |
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const node = new Scalar(parseFloat(str.replace(/_/g, ''))); |
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const dot = str.indexOf('.'); |
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if (dot !== -1) { |
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const f = str.substring(dot + 1).replace(/_/g, ''); |
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if (f[f.length - 1] === '0') |
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node.minFractionDigits = f.length; |
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} |
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return node; |
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}, |
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stringify: stringifyNumber |
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}; |
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export { float, floatExp, floatNaN };
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