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							- // CodeMirror, copyright (c) by Marijn Haverbeke and others
 
- // Distributed under an MIT license: https://codemirror.net/LICENSE
 
- (function(mod) {
 
-   if (typeof exports == "object" && typeof module == "object") // CommonJS
 
-     mod(require("../../lib/codemirror"));
 
-   else if (typeof define == "function" && define.amd) // AMD
 
-     define(["../../lib/codemirror"], mod);
 
-   else // Plain browser env
 
-     mod(CodeMirror);
 
- })(function(CodeMirror) {
 
- "use strict";
 
- function bracketFolding(pairs) {
 
-   return function(cm, start) {
 
-     var line = start.line, lineText = cm.getLine(line);
 
-     function findOpening(pair) {
 
-       var tokenType;
 
-       for (var at = start.ch, pass = 0;;) {
 
-         var found = at <= 0 ? -1 : lineText.lastIndexOf(pair[0], at - 1);
 
-         if (found == -1) {
 
-           if (pass == 1) break;
 
-           pass = 1;
 
-           at = lineText.length;
 
-           continue;
 
-         }
 
-         if (pass == 1 && found < start.ch) break;
 
-         tokenType = cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1));
 
-         if (!/^(comment|string)/.test(tokenType)) return {ch: found + 1, tokenType: tokenType, pair: pair};
 
-         at = found - 1;
 
-       }
 
-     }
 
-     function findRange(found) {
 
-       var count = 1, lastLine = cm.lastLine(), end, startCh = found.ch, endCh
 
-       outer: for (var i = line; i <= lastLine; ++i) {
 
-         var text = cm.getLine(i), pos = i == line ? startCh : 0;
 
-         for (;;) {
 
-           var nextOpen = text.indexOf(found.pair[0], pos), nextClose = text.indexOf(found.pair[1], pos);
 
-           if (nextOpen < 0) nextOpen = text.length;
 
-           if (nextClose < 0) nextClose = text.length;
 
-           pos = Math.min(nextOpen, nextClose);
 
-           if (pos == text.length) break;
 
-           if (cm.getTokenTypeAt(CodeMirror.Pos(i, pos + 1)) == found.tokenType) {
 
-             if (pos == nextOpen) ++count;
 
-             else if (!--count) { end = i; endCh = pos; break outer; }
 
-           }
 
-           ++pos;
 
-         }
 
-       }
 
-       if (end == null || line == end) return null
 
-       return {from: CodeMirror.Pos(line, startCh),
 
-               to: CodeMirror.Pos(end, endCh)};
 
-     }
 
-     var found = []
 
-     for (var i = 0; i < pairs.length; i++) {
 
-       var open = findOpening(pairs[i])
 
-       if (open) found.push(open)
 
-     }
 
-     found.sort(function(a, b) { return a.ch - b.ch })
 
-     for (var i = 0; i < found.length; i++) {
 
-       var range = findRange(found[i])
 
-       if (range) return range
 
-     }
 
-     return null
 
-   }
 
- }
 
- CodeMirror.registerHelper("fold", "brace", bracketFolding([["{", "}"], ["[", "]"]]));
 
- CodeMirror.registerHelper("fold", "brace-paren", bracketFolding([["{", "}"], ["[", "]"], ["(", ")"]]));
 
- CodeMirror.registerHelper("fold", "import", function(cm, start) {
 
-   function hasImport(line) {
 
-     if (line < cm.firstLine() || line > cm.lastLine()) return null;
 
-     var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
 
-     if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
 
-     if (start.type != "keyword" || start.string != "import") return null;
 
-     // Now find closing semicolon, return its position
 
-     for (var i = line, e = Math.min(cm.lastLine(), line + 10); i <= e; ++i) {
 
-       var text = cm.getLine(i), semi = text.indexOf(";");
 
-       if (semi != -1) return {startCh: start.end, end: CodeMirror.Pos(i, semi)};
 
-     }
 
-   }
 
-   var startLine = start.line, has = hasImport(startLine), prev;
 
-   if (!has || hasImport(startLine - 1) || ((prev = hasImport(startLine - 2)) && prev.end.line == startLine - 1))
 
-     return null;
 
-   for (var end = has.end;;) {
 
-     var next = hasImport(end.line + 1);
 
-     if (next == null) break;
 
-     end = next.end;
 
-   }
 
-   return {from: cm.clipPos(CodeMirror.Pos(startLine, has.startCh + 1)), to: end};
 
- });
 
- CodeMirror.registerHelper("fold", "include", function(cm, start) {
 
-   function hasInclude(line) {
 
-     if (line < cm.firstLine() || line > cm.lastLine()) return null;
 
-     var start = cm.getTokenAt(CodeMirror.Pos(line, 1));
 
-     if (!/\S/.test(start.string)) start = cm.getTokenAt(CodeMirror.Pos(line, start.end + 1));
 
-     if (start.type == "meta" && start.string.slice(0, 8) == "#include") return start.start + 8;
 
-   }
 
-   var startLine = start.line, has = hasInclude(startLine);
 
-   if (has == null || hasInclude(startLine - 1) != null) return null;
 
-   for (var end = startLine;;) {
 
-     var next = hasInclude(end + 1);
 
-     if (next == null) break;
 
-     ++end;
 
-   }
 
-   return {from: CodeMirror.Pos(startLine, has + 1),
 
-           to: cm.clipPos(CodeMirror.Pos(end))};
 
- });
 
- });
 
 
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