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1 // CodeMirror, copyright (c) by Marijn Haverbeke and others
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2 // Distributed under an MIT license: https://codemirror.net/5/LICENSE
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3
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4 (function(mod) {
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5 if (typeof exports == "object" && typeof module == "object") // CommonJS
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6 mod(require("../../lib/codemirror"));
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7 else if (typeof define == "function" && define.amd) // AMD
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8 define(["../../lib/codemirror"], mod);
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9 else // Plain browser env
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10 mod(CodeMirror);
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11 })(function(CodeMirror) {
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12 "use strict";
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13
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14 function lineIndent(cm, lineNo) {
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15 var text = cm.getLine(lineNo)
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16 var spaceTo = text.search(/\S/)
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17 if (spaceTo == -1 || /\bcomment\b/.test(cm.getTokenTypeAt(CodeMirror.Pos(lineNo, spaceTo + 1))))
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18 return -1
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19 return CodeMirror.countColumn(text, null, cm.getOption("tabSize"))
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20 }
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21
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22 CodeMirror.registerHelper("fold", "indent", function(cm, start) {
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23 var myIndent = lineIndent(cm, start.line)
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24 if (myIndent < 0) return
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25 var lastLineInFold = null
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26
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27 // Go through lines until we find a line that definitely doesn't belong in
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28 // the block we're folding, or to the end.
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29 for (var i = start.line + 1, end = cm.lastLine(); i <= end; ++i) {
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30 var indent = lineIndent(cm, i)
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31 if (indent == -1) {
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32 } else if (indent > myIndent) {
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33 // Lines with a greater indent are considered part of the block.
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34 lastLineInFold = i;
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35 } else {
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36 // If this line has non-space, non-comment content, and is
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37 // indented less or equal to the start line, it is the start of
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38 // another block.
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39 break;
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40 }
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41 }
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42 if (lastLineInFold) return {
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43 from: CodeMirror.Pos(start.line, cm.getLine(start.line).length),
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44 to: CodeMirror.Pos(lastLineInFold, cm.getLine(lastLineInFold).length)
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45 };
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46 });
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47
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48 });
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