71 lines
2.1 KiB
JavaScript
71 lines
2.1 KiB
JavaScript
import { stringifyNumber } from '../../stringify/stringifyNumber.js';
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const intIdentify = (value) => typeof value === 'bigint' || Number.isInteger(value);
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function intResolve(str, offset, radix, { intAsBigInt }) {
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const sign = str[0];
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if (sign === '-' || sign === '+')
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offset += 1;
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str = str.substring(offset).replace(/_/g, '');
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if (intAsBigInt) {
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switch (radix) {
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case 2:
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str = `0b${str}`;
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break;
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case 8:
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str = `0o${str}`;
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break;
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case 16:
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str = `0x${str}`;
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break;
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}
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const n = BigInt(str);
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return sign === '-' ? BigInt(-1) * n : n;
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}
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const n = parseInt(str, radix);
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return sign === '-' ? -1 * n : n;
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}
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function intStringify(node, radix, prefix) {
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const { value } = node;
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if (intIdentify(value)) {
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const str = value.toString(radix);
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return value < 0 ? '-' + prefix + str.substr(1) : prefix + str;
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}
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return stringifyNumber(node);
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}
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const intBin = {
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identify: intIdentify,
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default: true,
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tag: 'tag:yaml.org,2002:int',
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format: 'BIN',
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test: /^[-+]?0b[0-1_]+$/,
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resolve: (str, _onError, opt) => intResolve(str, 2, 2, opt),
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stringify: node => intStringify(node, 2, '0b')
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};
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const intOct = {
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identify: intIdentify,
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default: true,
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tag: 'tag:yaml.org,2002:int',
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format: 'OCT',
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test: /^[-+]?0[0-7_]+$/,
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resolve: (str, _onError, opt) => intResolve(str, 1, 8, opt),
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stringify: node => intStringify(node, 8, '0')
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};
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const int = {
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identify: intIdentify,
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default: true,
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tag: 'tag:yaml.org,2002:int',
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test: /^[-+]?[0-9][0-9_]*$/,
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resolve: (str, _onError, opt) => intResolve(str, 0, 10, opt),
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stringify: stringifyNumber
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};
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const intHex = {
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identify: intIdentify,
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default: true,
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tag: 'tag:yaml.org,2002:int',
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format: 'HEX',
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test: /^[-+]?0x[0-9a-fA-F_]+$/,
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resolve: (str, _onError, opt) => intResolve(str, 2, 16, opt),
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stringify: node => intStringify(node, 16, '0x')
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};
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export { int, intBin, intHex, intOct };
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