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   1  // CodeMirror, copyright (c) by Marijn Haverbeke and others
   2  // Distributed under an MIT license: https://codemirror.net/5/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  
  14  CodeMirror.defineMode("diff", function() {
  15  
  16    var TOKEN_NAMES = {
  17      '+': 'positive',
  18      '-': 'negative',
  19      '@': 'meta'
  20    };
  21  
  22    return {
  23      token: function(stream) {
  24        var tw_pos = stream.string.search(/[\t ]+?$/);
  25  
  26        if (!stream.sol() || tw_pos === 0) {
  27          stream.skipToEnd();
  28          return ("error " + (
  29            TOKEN_NAMES[stream.string.charAt(0)] || '')).replace(/ $/, '');
  30        }
  31  
  32        var token_name = TOKEN_NAMES[stream.peek()] || stream.skipToEnd();
  33  
  34        if (tw_pos === -1) {
  35          stream.skipToEnd();
  36        } else {
  37          stream.pos = tw_pos;
  38        }
  39  
  40        return token_name;
  41      }
  42    };
  43  });
  44  
  45  CodeMirror.defineMIME("text/x-diff", "diff");
  46  
  47  });