You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
88 lines
2.3 KiB
88 lines
2.3 KiB
'use strict';
|
|
|
|
const {
|
|
VMError
|
|
} = require('./bridge');
|
|
|
|
let cacheCoffeeScriptCompiler;
|
|
|
|
/**
|
|
* Returns the cached coffee script compiler or loads it
|
|
* if it is not found in the cache.
|
|
*
|
|
* @private
|
|
* @return {compileCallback} The coffee script compiler.
|
|
* @throws {VMError} If the coffee-script module can't be found.
|
|
*/
|
|
function getCoffeeScriptCompiler() {
|
|
if (!cacheCoffeeScriptCompiler) {
|
|
try {
|
|
// The warning generated by webpack can be disabled by setting:
|
|
// ignoreWarnings[].message = /Can't resolve 'coffee-script'/
|
|
/* eslint-disable-next-line global-require */
|
|
const coffeeScript = require('coffee-script');
|
|
cacheCoffeeScriptCompiler = (code, filename) => {
|
|
return coffeeScript.compile(code, {header: false, bare: true});
|
|
};
|
|
} catch (e) {
|
|
throw new VMError('Coffee-Script compiler is not installed.');
|
|
}
|
|
}
|
|
return cacheCoffeeScriptCompiler;
|
|
}
|
|
|
|
/**
|
|
* Remove the shebang from source code.
|
|
*
|
|
* @private
|
|
* @param {string} code - Code from which to remove the shebang.
|
|
* @return {string} code without the shebang.
|
|
*/
|
|
function removeShebang(code) {
|
|
if (!code.startsWith('#!')) return code;
|
|
return '//' + code.substring(2);
|
|
}
|
|
|
|
|
|
/**
|
|
* The JavaScript compiler, just a identity function.
|
|
*
|
|
* @private
|
|
* @type {compileCallback}
|
|
* @param {string} code - The JavaScript code.
|
|
* @param {string} filename - Filename of this script.
|
|
* @return {string} The code.
|
|
*/
|
|
function jsCompiler(code, filename) {
|
|
return removeShebang(code);
|
|
}
|
|
|
|
/**
|
|
* Look up the compiler for a specific name.
|
|
*
|
|
* @private
|
|
* @param {(string|compileCallback)} compiler - A compile callback or the name of the compiler.
|
|
* @return {compileCallback} The resolved compiler.
|
|
* @throws {VMError} If the compiler is unknown or the coffee script module was needed and couldn't be found.
|
|
*/
|
|
function lookupCompiler(compiler) {
|
|
if ('function' === typeof compiler) return compiler;
|
|
switch (compiler) {
|
|
case 'coffeescript':
|
|
case 'coffee-script':
|
|
case 'cs':
|
|
case 'text/coffeescript':
|
|
return getCoffeeScriptCompiler();
|
|
case 'javascript':
|
|
case 'java-script':
|
|
case 'js':
|
|
case 'text/javascript':
|
|
return jsCompiler;
|
|
default:
|
|
throw new VMError(`Unsupported compiler '${compiler}'.`);
|
|
}
|
|
}
|
|
|
|
exports.removeShebang = removeShebang;
|
|
exports.lookupCompiler = lookupCompiler;
|