text: /* ***** BEGIN LICENSE BLOCK *****
   * Distributed under the BSD license:
   *
   * Copyright (c) 2012, Ajax.org B.V.
   * All rights reserved.
   * 
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *     * Redistributions of source code must retain the above copyright
   *       notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above copyright
   *       notice, this list of conditions and the following disclaimer in the
   *       documentation and/or other materials provided with the distribution.
   *     * Neither the name of Ajax.org B.V. nor the
   *       names of its contributors may be used to endorse or promote products
   *       derived from this software without specific prior written permission.
   * 
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL AJAX.ORG B.V. BE LIABLE FOR ANY
   * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
   * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
   * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
   * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   * ***** END LICENSE BLOCK ***** */
  
  define(function(require, exports, module) {
      var Range = require("../range").Range;
      var load = require("../../../erlhickey/utils").load;
      var splitRegex = /[^a-zA-Z_0-9\$\-\u00C0-\u1FFF\u2C00-\uD7FF\w]+/;
  
      function getWordIndex(doc, pos) {
          var textBefore = doc.getTextRange(Range.fromPoints({row: 0, column:0}, pos));
          return textBefore.split(splitRegex).length - 1;
      }
  
      /**
       * Does a distance analysis of the word `prefix` at position `pos` in `doc`.
       * @return Map
       */
      function wordDistance(doc, pos) {
          var prefixPos = getWordIndex(doc, pos);
          var words = doc.getValue().split(splitRegex);
          var wordScores = Object.create(null);
          
          var currentWord = words[prefixPos];
  
          words.forEach(function(word, idx) {
              if (!word || word === currentWord) return;
  
              var distance = Math.abs(prefixPos - idx);
              var score = words.length - distance;
              if (wordScores[word]) {
                  wordScores[word] = Math.max(score, wordScores[word]);
              } else {
                  wordScores[word] = score;
              }
          });
          return wordScores;
      }
      var erlhickey = require("./../../../erlhickey/main")
      exports.getCompletions = function(editor, session, pos, prefix, callback) {
          var wordScore = wordDistance(session, pos, prefix);
          var wordList = Object.keys(wordScore);
  
          if(erlhickey.isErlang(session.getMode())) {
              erlhickey.getCompletion(prefix, wordList, wordScore, pos, editor, callback)
          }
          else if(erlhickey.isElixir(session.getMode())) {
              erlhickey.getCompletion(prefix, wordList, wordScore, pos, editor, callback, true)
          }
          else callback(null, wordList.map(function(word) {
              return {
                  caption: word,
                  value: word,
                  score: wordScore[word],
                  meta: "local"
              };
          }));
      };
  
  });
  