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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: http://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";
CodeMirror.registerGlobalHelper("fold", "comment", function(mode) {
return mode.blockCommentStart && mode.blockCommentEnd;
}, function(cm, start) {
var mode = cm.getModeAt(start), startToken = mode.blockCommentStart, endToken = mode.blockCommentEnd;
if (!startToken || !endToken) return;
var line = start.line, lineText = cm.getLine(line);
var startCh;
for (var at = start.ch, pass = 0;;) {
var found = at <= 0 ? -1 : lineText.lastIndexOf(startToken, at - 1);
if (found == -1) {
if (pass == 1) return;
pass = 1;
at = lineText.length;
continue;
}
if (pass == 1 && found < start.ch) return;
if (/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found + 1))) &&
(found == 0 || lineText.slice(found - endToken.length, found) == endToken ||
!/comment/.test(cm.getTokenTypeAt(CodeMirror.Pos(line, found))))) {
startCh = found + startToken.length;
break;
}
at = found - 1;
}
var depth = 1, lastLine = cm.lastLine(), end, endCh;
outer: for (var i = line; i <= lastLine; ++i) {
var text = cm.getLine(i), pos = i == line ? startCh : 0;
for (;;) {
var nextOpen = text.indexOf(startToken, pos), nextClose = text.indexOf(endToken, pos);
if (nextOpen < 0) nextOpen = text.length;
if (nextClose < 0) nextClose = text.length;
pos = Math.min(nextOpen, nextClose);
if (pos == text.length) break;
if (pos == nextOpen) ++depth;
else if (!--depth) { end = i; endCh = pos; break outer; }
++pos;
}
}
if (end == null || line == end && endCh == startCh) return;
return {from: CodeMirror.Pos(line, startCh),
to: CodeMirror.Pos(end, endCh)};
});
});
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