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Direktori : /usr/share/node_modules/acorn-bigint/ |
Current File : //usr/share/node_modules/acorn-bigint/index.js |
"use strict" const acorn = require("acorn") const tt = acorn.tokTypes const isIdentifierStart = acorn.isIdentifierStart module.exports = function(Parser) { return class extends Parser { parseLiteral(value) { const node = super.parseLiteral(value) if (node.raw.charCodeAt(node.raw.length - 1) == 110) node.bigint = this.getNumberInput(node.start, node.end - 1) return node } readRadixNumber(radix) { let start = this.pos this.pos += 2 // 0x let val = this.readInt(radix) if (val === null) this.raise(this.start + 2, `Expected number in radix ${radix}`) if (this.input.charCodeAt(this.pos) == 110) { let str = this.getNumberInput(start, this.pos) val = typeof BigInt !== "undefined" ? BigInt(str) : null ++this.pos } else if (isIdentifierStart(this.fullCharCodeAtPos())) this.raise(this.pos, "Identifier directly after number") return this.finishToken(tt.num, val) } readNumber(startsWithDot) { let start = this.pos // Not an int if (startsWithDot) return super.readNumber(startsWithDot) // Legacy octal if (this.input.charCodeAt(start) === 48 && this.input.charCodeAt(start + 1) !== 110) { return super.readNumber(startsWithDot) } if (this.readInt(10) === null) this.raise(start, "Invalid number") // Not a BigInt, reset and parse again if (this.input.charCodeAt(this.pos) != 110) { this.pos = start return super.readNumber(startsWithDot) } let str = this.getNumberInput(start, this.pos) let val = typeof BigInt !== "undefined" ? BigInt(str) : null ++this.pos return this.finishToken(tt.num, val) } // This is basically a hook for acorn-numeric-separator getNumberInput(start, end) { if (super.getNumberInput) return super.getNumberInput(start, end) return this.input.slice(start, end) } } }