82 lines
2.1 KiB
Java
82 lines
2.1 KiB
Java
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var components = require('../components.js');
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var peerDependentsMap = null;
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function getPeerDependentsMap() {
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var peerDependentsMap = {};
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Object.keys(components.languages).forEach(function (language) {
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if (language === 'meta') {
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return false;
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}
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if (components.languages[language].peerDependencies) {
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var peerDependencies = components.languages[language].peerDependencies;
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if (!Array.isArray(peerDependencies)) {
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peerDependencies = [peerDependencies];
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}
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peerDependencies.forEach(function (peerDependency) {
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if (!peerDependentsMap[peerDependency]) {
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peerDependentsMap[peerDependency] = [];
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}
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peerDependentsMap[peerDependency].push(language);
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});
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}
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});
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return peerDependentsMap;
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}
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function getPeerDependents(mainLanguage) {
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if (!peerDependentsMap) {
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peerDependentsMap = getPeerDependentsMap();
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}
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return peerDependentsMap[mainLanguage] || [];
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}
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function loadLanguages(arr, withoutDependencies) {
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// If no argument is passed, load all components
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if (!arr) {
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arr = Object.keys(components.languages).filter(function (language) {
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return language !== 'meta';
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});
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}
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if (arr && !arr.length) {
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return;
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}
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if (!Array.isArray(arr)) {
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arr = [arr];
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}
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arr.forEach(function (language) {
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if (!components.languages[language]) {
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console.warn('Language does not exist ' + language);
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return;
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}
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// Load dependencies first
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if (!withoutDependencies && components.languages[language].require) {
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loadLanguages(components.languages[language].require);
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}
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var pathToLanguage = './prism-' + language;
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delete require.cache[require.resolve(pathToLanguage)];
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delete Prism.languages[language];
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require(pathToLanguage);
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// Reload dependents
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var dependents = getPeerDependents(language).filter(function (dependent) {
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// If dependent language was already loaded,
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// we want to reload it.
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if (Prism.languages[dependent]) {
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delete Prism.languages[dependent];
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return true;
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}
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return false;
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});
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if (dependents.length) {
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loadLanguages(dependents, true);
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}
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});
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}
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module.exports = function (arr) {
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// Don't expose withoutDependencies
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loadLanguages(arr);
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};
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