1 | "use strict";
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2 |
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3 |
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4 | const version = "9.0.0";
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5 |
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6 | const start = require("unicode-" + version + "/Binary_Property/ID_Start/code-points.js")
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7 | .filter(function(ch) { return ch > 0x7f; });
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8 | let last = -1;
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9 | const cont = [0x200c, 0x200d].concat(
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10 | require("unicode-" + version + "/Binary_Property/ID_Continue/code-points.js")
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11 | .filter(function(ch) {
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12 | return ch > 0x7f && search(start, ch, last + 1) == -1;
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13 | })
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14 | );
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15 |
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16 | function search(arr, ch, starting) {
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17 | for (let i = starting; arr[i] <= ch && i < arr.length; last = i++)
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18 | if (arr[i] === ch)
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19 | return i;
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20 | return -1;
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21 | }
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22 |
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23 | function pad(str, width) {
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24 | while (str.length < width) str = "0" + str;
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25 | return str;
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26 | }
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27 |
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28 | function esc(code) {
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29 | const hex = code.toString(16);
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30 | if (hex.length <= 2) return "\\x" + pad(hex, 2);
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31 | else return "\\u" + pad(hex, 4);
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32 | }
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33 |
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34 | function generate(chars) {
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35 | const astral = [];
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36 | let re = "";
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37 | for (let i = 0, at = 0x10000; i < chars.length; i++) {
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38 | const from = chars[i];
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39 | let to = from;
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40 | while (i < chars.length - 1 && chars[i + 1] == to + 1) {
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41 | i++;
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42 | to++;
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43 | }
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44 | if (to <= 0xffff) {
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45 | if (from == to) re += esc(from);
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46 | else if (from + 1 == to) re += esc(from) + esc(to);
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47 | else re += esc(from) + "-" + esc(to);
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48 | } else {
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49 | astral.push(from - at, to - from);
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50 | at = to;
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51 | }
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52 | }
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53 | return { nonASCII: re, astral: astral };
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54 | }
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55 |
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56 | const startData = generate(start);
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57 | const contData = generate(cont);
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58 |
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59 | console.log("let nonASCIIidentifierStartChars = \"" + startData.nonASCII + "\";");
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60 | console.log("let nonASCIIidentifierChars = \"" + contData.nonASCII + "\";");
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61 | console.log("const astralIdentifierStartCodes = " + JSON.stringify(startData.astral) + ";");
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62 | console.log("const astralIdentifierCodes = " + JSON.stringify(contData.astral) + ";");
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