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javascript-lint.js
137 lines
| 1 | // CodeMirror, copyright (c) by Marijn Haverbeke and others |
| 2 | // Distributed under an MIT license: http://codemirror.net/LICENSE |
| 3 | |
| 4 | (function(mod) { |
| 5 | if (typeof exports == "object" && typeof module == "object") // CommonJS |
| 6 | mod(require("../../lib/codemirror")); |
| 7 | else if (typeof define == "function" && define.amd) // AMD |
| 8 | define(["../../lib/codemirror"], mod); |
| 9 | else // Plain browser env |
| 10 | mod(CodeMirror); |
| 11 | })(function(CodeMirror) { |
| 12 | "use strict"; |
| 13 | // declare global: JSHINT |
| 14 | |
| 15 | var bogus = [ "Dangerous comment" ]; |
| 16 | |
| 17 | var warnings = [ [ "Expected '{'", |
| 18 | "Statement body should be inside '{ }' braces." ] ]; |
| 19 | |
| 20 | var errors = [ "Missing semicolon", "Extra comma", "Missing property name", |
| 21 | "Unmatched ", " and instead saw", " is not defined", |
| 22 | "Unclosed string", "Stopping, unable to continue" ]; |
| 23 | |
| 24 | function validator(text, options) { |
| 25 | if (!window.JSHINT) return []; |
| 26 | JSHINT(text, options, options.globals); |
| 27 | var errors = JSHINT.data().errors, result = []; |
| 28 | if (errors) parseErrors(errors, result); |
| 29 | return result; |
| 30 | } |
| 31 | |
| 32 | CodeMirror.registerHelper("lint", "javascript", validator); |
| 33 | |
| 34 | function cleanup(error) { |
| 35 | // All problems are warnings by default |
| 36 | fixWith(error, warnings, "warning", true); |
| 37 | fixWith(error, errors, "error"); |
| 38 | |
| 39 | return isBogus(error) ? null : error; |
| 40 | } |
| 41 | |
| 42 | function fixWith(error, fixes, severity, force) { |
| 43 | var description, fix, find, replace, found; |
| 44 | |
| 45 | description = error.description; |
| 46 | |
| 47 | for ( var i = 0; i < fixes.length; i++) { |
| 48 | fix = fixes[i]; |
| 49 | find = (typeof fix === "string" ? fix : fix[0]); |
| 50 | replace = (typeof fix === "string" ? null : fix[1]); |
| 51 | found = description.indexOf(find) !== -1; |
| 52 | |
| 53 | if (force || found) { |
| 54 | error.severity = severity; |
| 55 | } |
| 56 | if (found && replace) { |
| 57 | error.description = replace; |
| 58 | } |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | function isBogus(error) { |
| 63 | var description = error.description; |
| 64 | for ( var i = 0; i < bogus.length; i++) { |
| 65 | if (description.indexOf(bogus[i]) !== -1) { |
| 66 | return true; |
| 67 | } |
| 68 | } |
| 69 | return false; |
| 70 | } |
| 71 | |
| 72 | function parseErrors(errors, output) { |
| 73 | for ( var i = 0; i < errors.length; i++) { |
| 74 | var error = errors[i]; |
| 75 | if (error) { |
| 76 | var linetabpositions, index; |
| 77 | |
| 78 | linetabpositions = []; |
| 79 | |
| 80 | // This next block is to fix a problem in jshint. Jshint |
| 81 | // replaces |
| 82 | // all tabs with spaces then performs some checks. The error |
| 83 | // positions (character/space) are then reported incorrectly, |
| 84 | // not taking the replacement step into account. Here we look |
| 85 | // at the evidence line and try to adjust the character position |
| 86 | // to the correct value. |
| 87 | if (error.evidence) { |
| 88 | // Tab positions are computed once per line and cached |
| 89 | var tabpositions = linetabpositions[error.line]; |
| 90 | if (!tabpositions) { |
| 91 | var evidence = error.evidence; |
| 92 | tabpositions = []; |
| 93 | // ugggh phantomjs does not like this |
| 94 | // forEachChar(evidence, function(item, index) { |
| 95 | Array.prototype.forEach.call(evidence, function(item, |
| 96 | index) { |
| 97 | if (item === '\t') { |
| 98 | // First col is 1 (not 0) to match error |
| 99 | // positions |
| 100 | tabpositions.push(index + 1); |
| 101 | } |
| 102 | }); |
| 103 | linetabpositions[error.line] = tabpositions; |
| 104 | } |
| 105 | if (tabpositions.length > 0) { |
| 106 | var pos = error.character; |
| 107 | tabpositions.forEach(function(tabposition) { |
| 108 | if (pos > tabposition) pos -= 1; |
| 109 | }); |
| 110 | error.character = pos; |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | var start = error.character - 1, end = start + 1; |
| 115 | if (error.evidence) { |
| 116 | index = error.evidence.substring(start).search(/.\b/); |
| 117 | if (index > -1) { |
| 118 | end += index; |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | // Convert to format expected by validation service |
| 123 | error.description = error.reason;// + "(jshint)"; |
| 124 | error.start = error.character; |
| 125 | error.end = end; |
| 126 | error = cleanup(error); |
| 127 | |
| 128 | if (error) |
| 129 | output.push({message: error.description, |
| 130 | severity: error.severity, |
| 131 | from: CodeMirror.Pos(error.line - 1, start), |
| 132 | to: CodeMirror.Pos(error.line - 1, end)}); |
| 133 | } |
| 134 | } |
| 135 | } |
| 136 | }); |
| 137 |