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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    var WORD = /[\w$]+/, RANGE = 500;
  15  
  16    CodeMirror.registerHelper("hint", "anyword", function(editor, options) {
  17      var word = options && options.word || WORD;
  18      var range = options && options.range || RANGE;
  19      var cur = editor.getCursor(), curLine = editor.getLine(cur.line);
  20      var end = cur.ch, start = end;
  21      while (start && word.test(curLine.charAt(start - 1))) --start;
  22      var curWord = start != end && curLine.slice(start, end);
  23  
  24      var list = options && options.list || [], seen = {};
  25      var re = new RegExp(word.source, "g");
  26      for (var dir = -1; dir <= 1; dir += 2) {
  27        var line = cur.line, endLine = Math.min(Math.max(line + dir * range, editor.firstLine()), editor.lastLine()) + dir;
  28        for (; line != endLine; line += dir) {
  29          var text = editor.getLine(line), m;
  30          while (m = re.exec(text)) {
  31            if (line == cur.line && m[0] === curWord) continue;
  32            if ((!curWord || m[0].lastIndexOf(curWord, 0) == 0) && !Object.prototype.hasOwnProperty.call(seen, m[0])) {
  33              seen[m[0]] = true;
  34              list.push(m[0]);
  35            }
  36          }
  37        }
  38      }
  39      return {list: list, from: CodeMirror.Pos(cur.line, start), to: CodeMirror.Pos(cur.line, end)};
  40    });
  41  });