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10 | 'use strict';
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11 |
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12 | var angularRule = require('./utils/angular-rule');
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13 |
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14 |
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15 | module.exports = {
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16 | meta: {
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17 | schema: []
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18 | },
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19 | create: angularRule(function(context) {
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20 |
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21 | var visitedScopes = [];
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22 |
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23 |
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24 | function collectAngularScopes(scope) {
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25 | if (visitedScopes.indexOf(scope) === -1) {
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26 | visitedScopes.push(scope);
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27 | scope.childScopes.forEach(function(child) {
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28 | collectAngularScopes(child);
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29 | });
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30 | }
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31 | }
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32 |
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33 | function reportUnusedVariables(callee, fn) {
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34 | if (!fn) {
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35 | return;
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36 | }
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37 | visitedScopes.some(function(scope) {
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38 | if (scope.block !== fn) {
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39 | return;
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40 | }
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41 | scope.variables.forEach(function(variable) {
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42 | if (variable.name === 'arguments') {
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43 | return;
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44 | }
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45 | if (fn.params.indexOf(variable.identifiers[0]) === -1) {
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46 | return;
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47 | }
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48 | if (variable.references.length === 0) {
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49 | context.report(fn, 'Unused injected value {{name}}', variable);
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50 | }
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51 | });
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52 | return true;
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53 | });
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54 | }
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55 |
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56 | return {
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57 | 'angular?animation': reportUnusedVariables,
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58 | 'angular?config': reportUnusedVariables,
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59 | 'angular?controller': reportUnusedVariables,
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60 | 'angular?directive': reportUnusedVariables,
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61 | 'angular?factory': reportUnusedVariables,
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62 | 'angular?filter': reportUnusedVariables,
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63 | 'angular?inject': reportUnusedVariables,
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64 | 'angular?run': reportUnusedVariables,
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65 | 'angular?service': reportUnusedVariables,
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66 | 'angular?provider': function(callee, providerFn, $get) {
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67 | reportUnusedVariables(null, providerFn);
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68 | reportUnusedVariables(null, $get);
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69 | },
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70 |
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71 | // Actually find and report unused injected variables.
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72 | 'Program:exit': function() {
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73 | var globalScope = context.getScope();
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74 | collectAngularScopes(globalScope);
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75 | }
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76 | };
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77 | })
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78 | };
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