overleaf/services/web/public/js/ace/mode/behaviour/xquery.js

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 * Copyright (c) 2010, Ajax.org B.V.
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 *       notice, this list of conditions and the following disclaimer.
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define(function(require, exports, module) {
"use strict";

  var oop = require("../../lib/oop");
  var Behaviour = require('../behaviour').Behaviour;
  var CstyleBehaviour = require('./cstyle').CstyleBehaviour;
  var XmlBehaviour = require("../behaviour/xml").XmlBehaviour;
  var TokenIterator = require("../../token_iterator").TokenIterator;

function hasType(token, type) {
    var hasType = true;
    var typeList = token.type.split('.');
    var needleList = type.split('.');
    needleList.forEach(function(needle){
        if (typeList.indexOf(needle) == -1) {
            hasType = false;
            return false;
        }
    });
    return hasType;
}
 
  var XQueryBehaviour = function () {
      
      this.inherit(CstyleBehaviour, ["braces", "parens", "string_dquotes"]); // Get string behaviour
      this.inherit(XmlBehaviour); // Get xml behaviour
      
      this.add("autoclosing", "insertion", function (state, action, editor, session, text) {
        if (text == '>') {
            var position = editor.getCursorPosition();
            var iterator = new TokenIterator(session, position.row, position.column);
            var token = iterator.getCurrentToken();
            var atCursor = false;
            var state = JSON.parse(state).pop();
            if ((token && token.value === '>') || state !== "StartTag") return;
            if (!token || !hasType(token, 'meta.tag') && !(hasType(token, 'text') && token.value.match('/'))){
                do {
                    token = iterator.stepBackward();
                } while (token && (hasType(token, 'string') || hasType(token, 'keyword.operator') || hasType(token, 'entity.attribute-name') || hasType(token, 'text')));
            } else {
                atCursor = true;
            }
            var previous = iterator.stepBackward();
            if (!token || !hasType(token, 'meta.tag') || (previous !== null && previous.value.match('/'))) {
                return
            }
            var tag = token.value.substring(1);
            if (atCursor){
                var tag = tag.substring(0, position.column - token.start);
            }

            return {
               text: '>' + '</' + tag + '>',
               selection: [1, 1]
            }
        }
    });

  }
  oop.inherits(XQueryBehaviour, Behaviour);

  exports.XQueryBehaviour = XQueryBehaviour;
});