| 'use strict'; |
| |
| // Which Unicode version should be used? |
| var version = '9.0.0'; |
| |
| var start = require('unicode-' + version + '/Binary_Property/ID_Start/code-points.js') |
| .filter(function(ch) { return ch > 0x7f; }); |
| var last = -1; |
| var cont = [0x200c, 0x200d].concat(require('unicode-' + version + '/Binary_Property/ID_Continue/code-points.js') |
| .filter(function(ch) { return ch > 0x7f && search(start, ch, last + 1) == -1; })); |
| |
| function search(arr, ch, starting) { |
| for (var i = starting; arr[i] <= ch && i < arr.length; last = i++) |
| if (arr[i] === ch) |
| return i; |
| return -1; |
| } |
| |
| function pad(str, width) { |
| while (str.length < width) str = "0" + str; |
| return str; |
| } |
| |
| function esc(code) { |
| var hex = code.toString(16); |
| if (hex.length <= 2) return "\\x" + pad(hex, 2); |
| else return "\\u" + pad(hex, 4); |
| } |
| |
| function generate(chars) { |
| var astral = [], re = ""; |
| for (var i = 0, at = 0x10000; i < chars.length; i++) { |
| var from = chars[i], to = from; |
| while (i < chars.length - 1 && chars[i + 1] == to + 1) { |
| i++; |
| to++; |
| } |
| if (to <= 0xffff) { |
| if (from == to) re += esc(from); |
| else if (from + 1 == to) re += esc(from) + esc(to); |
| else re += esc(from) + "-" + esc(to); |
| } else { |
| astral.push(from - at, to - from); |
| at = to; |
| } |
| } |
| return {nonASCII: re, astral: astral}; |
| } |
| |
| var startData = generate(start), contData = generate(cont); |
| |
| console.log("let nonASCIIidentifierStartChars = \"" + startData.nonASCII + "\""); |
| console.log("let nonASCIIidentifierChars = \"" + contData.nonASCII + "\""); |
| console.log("const astralIdentifierStartCodes = " + JSON.stringify(startData.astral)); |
| console.log("const astralIdentifierCodes = " + JSON.stringify(contData.astral)); |