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javascript-lint.min.js (4628B)


      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) {
     26       if (window.console) {
     27         window.console.error("Error: window.JSHINT not defined, CodeMirror JavaScript linting cannot run.");
     28       }
     29       return [];
     30     }
     31     JSHINT(text, options, options.globals);
     32     var errors = JSHINT.data().errors, result = [];
     33     if (errors) parseErrors(errors, result);
     34     return result;
     35   }
     36 
     37   CodeMirror.registerHelper("lint", "javascript", validator);
     38 
     39   function cleanup(error) {
     40     // All problems are warnings by default
     41     fixWith(error, warnings, "warning", true);
     42     fixWith(error, errors, "error");
     43 
     44     return isBogus(error) ? null : error;
     45   }
     46 
     47   function fixWith(error, fixes, severity, force) {
     48     var description, fix, find, replace, found;
     49 
     50     description = error.description;
     51 
     52     for ( var i = 0; i < fixes.length; i++) {
     53       fix = fixes[i];
     54       find = (typeof fix === "string" ? fix : fix[0]);
     55       replace = (typeof fix === "string" ? null : fix[1]);
     56       found = description.indexOf(find) !== -1;
     57 
     58       if (force || found) {
     59         error.severity = severity;
     60       }
     61       if (found && replace) {
     62         error.description = replace;
     63       }
     64     }
     65   }
     66 
     67   function isBogus(error) {
     68     var description = error.description;
     69     for ( var i = 0; i < bogus.length; i++) {
     70       if (description.indexOf(bogus[i]) !== -1) {
     71         return true;
     72       }
     73     }
     74     return false;
     75   }
     76 
     77   function parseErrors(errors, output) {
     78     for ( var i = 0; i < errors.length; i++) {
     79       var error = errors[i];
     80       if (error) {
     81         var linetabpositions, index;
     82 
     83         linetabpositions = [];
     84 
     85         // This next block is to fix a problem in jshint. Jshint
     86         // replaces
     87         // all tabs with spaces then performs some checks. The error
     88         // positions (character/space) are then reported incorrectly,
     89         // not taking the replacement step into account. Here we look
     90         // at the evidence line and try to adjust the character position
     91         // to the correct value.
     92         if (error.evidence) {
     93           // Tab positions are computed once per line and cached
     94           var tabpositions = linetabpositions[error.line];
     95           if (!tabpositions) {
     96             var evidence = error.evidence;
     97             tabpositions = [];
     98             // ugggh phantomjs does not like this
     99             // forEachChar(evidence, function(item, index) {
    100             Array.prototype.forEach.call(evidence, function(item,
    101                                                             index) {
    102               if (item === '\t') {
    103                 // First col is 1 (not 0) to match error
    104                 // positions
    105                 tabpositions.push(index + 1);
    106               }
    107             });
    108             linetabpositions[error.line] = tabpositions;
    109           }
    110           if (tabpositions.length > 0) {
    111             var pos = error.character;
    112             tabpositions.forEach(function(tabposition) {
    113               if (pos > tabposition) pos -= 1;
    114             });
    115             error.character = pos;
    116           }
    117         }
    118 
    119         var start = error.character - 1, end = start + 1;
    120         if (error.evidence) {
    121           index = error.evidence.substring(start).search(/.\b/);
    122           if (index > -1) {
    123             end += index;
    124           }
    125         }
    126 
    127         // Convert to format expected by validation service
    128         error.description = error.reason;// + "(jshint)";
    129         error.start = error.character;
    130         error.end = end;
    131         error = cleanup(error);
    132 
    133         if (error)
    134           output.push({message: error.description,
    135                        severity: error.severity,
    136                        from: CodeMirror.Pos(error.line - 1, start),
    137                        to: CodeMirror.Pos(error.line - 1, end)});
    138       }
    139     }
    140   }
    141 });