/*jshint strict: false, unused: false */

////////////////////////////////////////////////////////////////////////////////
/// @brief parser functions
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2011-2012 triagens GmbH, Cologne, Germany
///
/// Licensed under the Apache License, Version 2.0 (the "License");
/// you may not use this file except in compliance with the License.
/// You may obtain a copy of the License at
///
///     http://www.apache.org/licenses/LICENSE-2.0
///
/// Unless required by applicable law or agreed to in writing, software
/// distributed under the License is distributed on an "AS IS" BASIS,
/// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
/// See the License for the specific language governing permissions and
/// limitations under the License.
///
/// Copyright holder is triAGENS GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Copyright 2011-2012, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////

var arangodb = require("@arangodb");


////////////////////////////////////////////////////////////////////////////////
/// @brief parses a number
////////////////////////////////////////////////////////////////////////////////

exports.number = function (value, info, lang) {
  var error;
  var format;
  var result;

  if (info.hasOwnProperty('format')) {
    format = info.format;

    if (format === "%d") {
      result = parseInt(value, 10);
    }
    else if (format === "%f") {
      result = parseFloat(value);
    }
    else if (format === "%x") {
      result = parseInt(value, 16);
    }
    else if (format === "%o") {
      result = parseInt(value, 8);
    }
    else {
      error = new arangodb.ArangoError();
      error.errorNum = arangodb.ERROR_NOT_IMPLEMENTED;
      error.errorMessage = "format '" + format + "' not implemented";

      throw error;
    }
  }
  else {
    result = parseFloat(value);
  }

  if (result === null || result === undefined || isNaN(result)) {
    error = new arangodb.ArangoError();
    error.errorNum = arangodb.ERROR_ARANGO_PARSER_FAILED;
    error.errorMessage = "format '" + format + "' not implemented";

    throw error;
  }

  return result;
};