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