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// CodeMirror, copyright (c) by Marijn Haverbeke and others
// Distributed under an MIT license: https://codemirror.net/5/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) {
var nonspace = /\S/g;
var repeat = String.prototype.repeat || function (n) { return Array(n + 1).join(this); };
function continueComment(cm) {
if (cm.getOption("disableInput")) return CodeMirror.Pass;
var ranges = cm.listSelections(), mode, inserts = [];
for (var i = 0; i < ranges.length; i++) {
var pos = ranges[i].head
if (!/\bcomment\b/.test(cm.getTokenTypeAt(pos))) return CodeMirror.Pass;
var modeHere = cm.getModeAt(pos)
if (!mode) mode = modeHere;
else if (mode != modeHere) return CodeMirror.Pass;
var insert = null, line, found;
var blockStart = mode.blockCommentStart, lineCmt = mode.lineComment;
if (blockStart && mode.blockCommentContinue) {
line = cm.getLine(pos.line);
var end = line.lastIndexOf(mode.blockCommentEnd, pos.ch - mode.blockCommentEnd.length);
// 1. if this block comment ended
// 2. if this is actually inside a line comment
if (end != -1 && end == pos.ch - mode.blockCommentEnd.length ||
lineCmt && (found = line.lastIndexOf(lineCmt, pos.ch - 1)) > -1 &&
/\bcomment\b/.test(cm.getTokenTypeAt({line: pos.line, ch: found + 1}))) {
// ...then don't continue it
} else if (pos.ch >= blockStart.length &&
(found = line.lastIndexOf(blockStart, pos.ch - blockStart.length)) > -1 &&
found > end) {
// reuse the existing leading spaces/tabs/mixed
// or build the correct indent using CM's tab/indent options
if (nonspaceAfter(0, line) >= found) {
insert = line.slice(0, found);
} else {
var tabSize = cm.options.tabSize, numTabs;
found = CodeMirror.countColumn(line, found, tabSize);
insert = !cm.options.indentWithTabs ? repeat.call(" ", found) :
repeat.call("\t", (numTabs = Math.floor(found / tabSize))) +
repeat.call(" ", found - tabSize * numTabs);
}
} else if ((found = line.indexOf(mode.blockCommentContinue)) > -1 &&
found <= pos.ch &&
found <= nonspaceAfter(0, line)) {
insert = line.slice(0, found);
}
if (insert != null) insert += mode.blockCommentContinue
}
if (insert == null && lineCmt && continueLineCommentEnabled(cm)) {
if (line == null) line = cm.getLine(pos.line);
found = line.indexOf(lineCmt);
// cursor at pos 0, line comment also at pos 0 => shift it down, don't continue
if (!pos.ch && !found) insert = "";
// continue only if the line starts with an optional space + line comment
else if (found > -1 && nonspaceAfter(0, line) >= found) {
// don't continue if there's only space(s) after cursor or the end of the line
insert = nonspaceAfter(pos.ch, line) > -1;
// but always continue if the next line starts with a line comment too
if (!insert) {
var next = cm.getLine(pos.line + 1) || '',
nextFound = next.indexOf(lineCmt);
insert = nextFound > -1 && nonspaceAfter(0, next) >= nextFound || null;
}
if (insert) {
insert = line.slice(0, found) + lineCmt +
line.slice(found + lineCmt.length).match(/^\s*/)[0];
}
}
}
if (insert == null) return CodeMirror.Pass;
inserts[i] = "\n" + insert;
}
cm.operation(function() {
for (var i = ranges.length - 1; i >= 0; i--)
cm.replaceRange(inserts[i], ranges[i].from(), ranges[i].to(), "+insert");
});
}
function nonspaceAfter(ch, str) {
nonspace.lastIndex = ch;
var m = nonspace.exec(str);
return m ? m.index : -1;
}
function continueLineCommentEnabled(cm) {
var opt = cm.getOption("continueComments");
if (opt && typeof opt == "object")
return opt.continueLineComment !== false;
return true;
}
CodeMirror.defineOption("continueComments", null, function(cm, val, prev) {
if (prev && prev != CodeMirror.Init)
cm.removeKeyMap("continueComment");
if (val) {
var key = "Enter";
if (typeof val == "string")
key = val;
else if (typeof val == "object" && val.key)
key = val.key;
var map = {name: "continueComment"};
map[key] = continueComment;
cm.addKeyMap(map);
}
});
});