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/**
* @fileoverview Remove macros from SpiderMonkey's self-hosted JS.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
"use strict";
var path = require("path");
const selfHostedRegex = /js\/src\/(?:builtin|shell)\/.*?\.js$/;
const macroRegex = /\s*\#(if|ifdef|else|elif|endif|include|define|undef).*/;
module.exports = {
preprocess(text, filename) {
if (path.win32) {
filename = filename.split(path.sep).join("/");
}
if (!selfHostedRegex.test(filename)) {
return [text];
}
let lines = text.split(/\n/);
for (let i = 0; i < lines.length; i++) {
if (!macroRegex.test(lines[i])) {
// No macro here, nothing to do.
continue;
}
for (; i < lines.length; i++) {
lines[i] = "// " + lines[i];
// If the line ends with a backslash (\), the next line
// is also part of part of the macro.
if (!lines[i].endsWith("\\")) {
break;
}
}
}
return [lines.join("\n")];
},
postprocess(messages, filename) {
return Array.prototype.concat.apply([], messages);
},
};
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