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76 lines
2.2 KiB
76 lines
2.2 KiB
'use strict'; |
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var stringifyNumber = require('../../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${str}`; |
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break; |
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} |
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const n = BigInt(str); |
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return sign === '-' ? BigInt(-1) * n : n; |
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} |
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const n = parseInt(str, radix); |
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return sign === '-' ? -1 * n : n; |
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} |
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function intStringify(node, radix, prefix) { |
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const { value } = node; |
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if (intIdentify(value)) { |
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const str = value.toString(radix); |
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return value < 0 ? '-' + prefix + str.substr(1) : prefix + str; |
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} |
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return stringifyNumber.stringifyNumber(node); |
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} |
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const intBin = { |
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identify: intIdentify, |
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default: true, |
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tag: 'tag:yaml.org,2002:int', |
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format: 'BIN', |
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test: /^[-+]?0b[0-1_]+$/, |
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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.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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exports.int = int; |
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exports.intBin = intBin; |
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exports.intHex = intHex; |
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exports.intOct = intOct;
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