comment-fold.js (2217B)
1 // CodeMirror, copyright (c) by Marijn Haverbeke and others 2 // Distributed under an MIT license: https://codemirror.net/LICENSE 3 4 (function(mod) { 5 if (typeof exports == "object" && typeof module == "object") // CommonJS 6 mod(require("resource://devtools/client/shared/sourceeditor/codemirror/lib/codemirror.js")); 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 CodeMirror.registerGlobalHelper("fold", "comment", function(mode) { 15 return mode.blockCommentStart && mode.blockCommentEnd; 16 }, function(cm, start) { 17 var mode = cm.getModeAt(start), startToken = mode.blockCommentStart, endToken = mode.blockCommentEnd; 18 if (!startToken || !endToken) return; 19 var line = start.line, lineText = cm.getLine(line); 20 21 var startCh; 22 for (var at = start.ch, pass = 0;;) { 23 var found = at <= 0 ? -1 : lineText.lastIndexOf(startToken, at - 1); 24 if (found == -1) { 25 if (pass == 1) return; 26 pass = 1; 27 at = lineText.length; 28 continue; 29 } 30 if (pass == 1 && found < start.ch) return; 31 if (/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1))) && 32 (found == 0 || lineText.slice(found - endToken.length, found) == endToken || 33 !/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found))))) { 34 startCh = found + startToken.length; 35 break; 36 } 37 at = found - 1; 38 } 39 40 var depth = 1, lastLine = cm.lastLine(), end, endCh; 41 outer: for (var i = line; i <= lastLine; ++i) { 42 var text = cm.getLine(i), pos = i == line ? startCh : 0; 43 for (;;) { 44 var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos); 45 if (nextOpen < 0) nextOpen = text.length; 46 if (nextClose < 0) nextClose = text.length; 47 pos = Math.min(nextOpen, nextClose); 48 if (pos == text.length) break; 49 if (pos == nextOpen) ++depth; 50 else if (!--depth) { end = i; endCh = pos; break outer; } 51 ++pos; 52 } 53 } 54 if (end == null || line == end && endCh == startCh) return; 55 return {from: CodeMirror.Pos(line, startCh), 56 to: CodeMirror.Pos(end, endCh)}; 57 }); 58 59 });