76 lines
2.0 KiB
JavaScript
76 lines
2.0 KiB
JavaScript
"use strict";
|
|
|
|
// Always use the latest available version of Unicode!
|
|
// https://tc39.github.io/ecma262/#sec-conformance
|
|
const version = "13.0.0";
|
|
|
|
const start = require("@unicode/unicode-" +
|
|
version +
|
|
"/Binary_Property/ID_Start/code-points.js").filter(function (ch) {
|
|
return ch > 0x7f;
|
|
});
|
|
let last = -1;
|
|
const cont = [0x200c, 0x200d].concat(
|
|
require("@unicode/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 (let 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) {
|
|
const hex = code.toString(16);
|
|
if (hex.length <= 2) return "\\x" + pad(hex, 2);
|
|
else return "\\u" + pad(hex, 4);
|
|
}
|
|
|
|
function generate(chars) {
|
|
const astral = [];
|
|
let re = "";
|
|
for (let i = 0, at = 0x10000; i < chars.length; i++) {
|
|
const from = chars[i];
|
|
let 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 };
|
|
}
|
|
|
|
const startData = generate(start);
|
|
const contData = generate(cont);
|
|
|
|
console.log("/* prettier-ignore */");
|
|
console.log('let nonASCIIidentifierStartChars = "' + startData.nonASCII + '";');
|
|
console.log("/* prettier-ignore */");
|
|
console.log('let nonASCIIidentifierChars = "' + contData.nonASCII + '";');
|
|
console.log("/* prettier-ignore */");
|
|
console.log(
|
|
"const astralIdentifierStartCodes = " + JSON.stringify(startData.astral) + ";"
|
|
);
|
|
console.log("/* prettier-ignore */");
|
|
console.log(
|
|
"const astralIdentifierCodes = " + JSON.stringify(contData.astral) + ";"
|
|
);
|