1 | var components = require('../components.js');
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2 | var peerDependentsMap = null;
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3 |
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4 | function getPeerDependentsMap() {
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5 | var peerDependentsMap = {};
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6 | Object.keys(components.languages).forEach(function (language) {
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7 | if (language === 'meta') {
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8 | return false;
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9 | }
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10 | if (components.languages[language].peerDependencies) {
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11 | var peerDependencies = components.languages[language].peerDependencies;
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12 | if (!Array.isArray(peerDependencies)) {
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13 | peerDependencies = [peerDependencies];
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14 | }
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15 | peerDependencies.forEach(function (peerDependency) {
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16 | if (!peerDependentsMap[peerDependency]) {
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17 | peerDependentsMap[peerDependency] = [];
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18 | }
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19 | peerDependentsMap[peerDependency].push(language);
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20 | });
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21 | }
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22 | });
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23 | return peerDependentsMap;
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24 | }
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25 |
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26 | function getPeerDependents(mainLanguage) {
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27 | if (!peerDependentsMap) {
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28 | peerDependentsMap = getPeerDependentsMap();
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29 | }
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30 | return peerDependentsMap[mainLanguage] || [];
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31 | }
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32 |
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33 | function loadLanguages(arr, withoutDependencies) {
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34 |
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35 | if (!arr) {
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36 | arr = Object.keys(components.languages).filter(function (language) {
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37 | return language !== 'meta';
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38 | });
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39 | }
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40 | if (arr && !arr.length) {
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41 | return;
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42 | }
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43 |
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44 | if (!Array.isArray(arr)) {
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45 | arr = [arr];
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46 | }
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47 |
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48 | arr.forEach(function (language) {
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49 | if (!components.languages[language]) {
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50 | console.warn('Language does not exist ' + language);
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51 | return;
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52 | }
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53 |
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54 | if (!withoutDependencies && components.languages[language].require) {
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55 | loadLanguages(components.languages[language].require);
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56 | }
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57 |
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58 | var pathToLanguage = './prism-' + language;
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59 | delete require.cache[require.resolve(pathToLanguage)];
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60 | delete Prism.languages[language];
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61 | require(pathToLanguage);
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62 |
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63 |
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64 | var dependents = getPeerDependents(language).filter(function (dependent) {
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65 |
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66 |
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67 | if (Prism.languages[dependent]) {
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68 | delete Prism.languages[dependent];
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69 | return true;
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70 | }
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71 | return false;
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72 | });
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73 | if (dependents.length) {
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74 | loadLanguages(dependents, true);
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75 | }
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76 | });
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77 | }
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78 |
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79 | module.exports = function (arr) {
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80 |
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81 | loadLanguages(arr);
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82 | }; |
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