Overleaf/services/web/public/js/ace/mode/xquery_worker.js

/* ***** BEGIN LICENSE BLOCK *****
 * Distributed under the BSD license:
 *
 * Copyright (c) 2010, Ajax.org B.V.
 * All rights reserved.
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 * modification, are permitted provided that the following conditions are met:
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 *       notice, this list of conditions and the following disclaimer.
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 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
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define(function(require, exports, module) {
"use strict";
    
var oop = require("../lib/oop");
var Mirror = require("../worker/mirror").Mirror;
var JSONParseTreeHandler  = require("./xquery/JSONParseTreeHandler").JSONParseTreeHandler;
var XQueryParser  = require("./xquery/XQueryParser").XQueryParser;
var SemanticHighlighter = require("./xquery/visitors/SemanticHighlighter").SemanticHighlighter;

var XQueryWorker = exports.XQueryWorker = function(sender) {
    Mirror.call(this, sender);
    this.setTimeout(200);
};

oop.inherits(XQueryWorker, Mirror);

(function() {
    
  this.onUpdate = function() {
    this.sender.emit("start");
    var value = this.doc.getValue();    
    var h = new JSONParseTreeHandler(value);
    var parser = new XQueryParser(value, h);
    try {
      parser.parse_XQuery();
      this.sender.emit("ok");
      var ast = h.getParseTree();
      var highlighter = new SemanticHighlighter(ast, value);
      var tokens = highlighter.getTokens();
      this.sender.emit("highlight", { tokens: tokens, lines: highlighter.lines });
    } catch(e) {
      if(e instanceof parser.ParseException) {
        var prefix = value.substring(0, e.getBegin());
        var line = prefix.split("\n").length;
        var column = e.getBegin() - prefix.lastIndexOf("\n");
        var message = parser.getErrorMessage(e);
        this.sender.emit("error", {
          row: line - 1,
          column: column,
          text: message,
          type: "error"
        });
      } else {
        throw e;
      }
    }
 };
    
}).call(XQueryWorker.prototype);

});