wcfsetup/install/files/js/3rdParty/codemirror/addon/fold/comment-fold.js

   1 (function(mod) {
   2   if (typeof exports == "object" && typeof module == "object") // CommonJS
   3     mod(require("../../lib/codemirror"));
   4   else if (typeof define == "function" && define.amd) // AMD
   5     define(["../../lib/codemirror"], mod);
   6   else // Plain browser env
   7     mod(CodeMirror);
   8 })(function(CodeMirror) {
   9 "use strict";
  10
  11 CodeMirror.registerGlobalHelper("fold", "comment", function(mode) {
  12   return mode.blockCommentStart && mode.blockCommentEnd;
  13 }, function(cm, start) {
  14   var mode = cm.getModeAt(start), startToken = mode.blockCommentStart, endToken = mode.blockCommentEnd;
  15   if (!startToken || !endToken) return;
  16   var line = start.line, lineText = cm.getLine(line);
  17
  18   var startCh;
  19   for (var at = start.ch, pass = 0;;) {
  20     var found = at <= 0 ? -1 : lineText.lastIndexOf(startToken, at - 1);
  21     if (found == -1) {
  22       if (pass == 1) return;
  23       pass = 1;
  24       at = lineText.length;
  25       continue;
  26     }
  27     if (pass == 1 && found < start.ch) return;
  28     if (/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1)))) {
  29       startCh = found + startToken.length;
  30       break;
  31     }
  32     at = found - 1;
  33   }
  34
  35   var depth = 1, lastLine = cm.lastLine(), end, endCh;
  36   outer: for (var i = line; i <= lastLine; ++i) {
  37     var text = cm.getLine(i), pos = i == line ? startCh : 0;
  38     for (;;) {
  39       var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
  40       if (nextOpen < 0) nextOpen = text.length;
  41       if (nextClose < 0) nextClose = text.length;
  42       pos = Math.min(nextOpen, nextClose);
  43       if (pos == text.length) break;
  44       if (pos == nextOpen) ++depth;
  45       else if (!--depth) { end = i; endCh = pos; break outer; }
  46       ++pos;
  47     }
  48   }
  49   if (end == null || line == end && endCh == startCh) return;
  50   return {from: CodeMirror.Pos(line, startCh),
  51           to: CodeMirror.Pos(end, endCh)};
  52 });
  53
  54 });