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

////////////////////////////////////////////////////////////////////////////////
/// @brief validator 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 positive number
////////////////////////////////////////////////////////////////////////////////

exports.positiveNumber = function (value, info, lang) {
  if (value <= 0.0) {
    var error = new arangodb.ArangoError();
    error.errorNum = arangodb.ERROR_ARANGO_VALIDATION_FAILED;
    error.errorMessage = "number must be positive";

    throw error;
  }
};

////////////////////////////////////////////////////////////////////////////////
/// @brief negative number
////////////////////////////////////////////////////////////////////////////////

exports.negativeNumber = function (value, info, lang) {
  if (0.0 <= value) {
    var error = new arangodb.ArangoError();
    error.errorNum = arangodb.ERROR_ARANGO_VALIDATION_FAILED;
    error.errorMessage = "number must be negative";

    throw error;
  }
};

////////////////////////////////////////////////////////////////////////////////
/// @brief zero
////////////////////////////////////////////////////////////////////////////////

exports.zeroNumber = function (value, info, lang) {
  if (value === 0.0) {
    var error = new arangodb.ArangoError();
    error.errorNum = arangodb.ERROR_ARANGO_VALIDATION_FAILED;
    error.errorMessage = "number must be zero";

    throw error;
  }
};

////////////////////////////////////////////////////////////////////////////////
/// @brief non-positive number
////////////////////////////////////////////////////////////////////////////////

exports.nonPositiveNumber = function (value, info, lang) {
  if (0.0 < value) {
    var error = new arangodb.ArangoError();
    error.errorNum = arangodb.ERROR_ARANGO_VALIDATION_FAILED;
    error.errorMessage = "number must be non-positive";

    throw error;
  }
};

////////////////////////////////////////////////////////////////////////////////
/// @brief non-negative number
////////////////////////////////////////////////////////////////////////////////

exports.nonNegativeNumber = function (value, info, lang) {
  if (value < 0.0) {
    var error = new arangodb.ArangoError();
    error.errorNum = arangodb.ERROR_ARANGO_VALIDATION_FAILED;
    error.errorMessage = "number must be non-negative";

    throw error;
  }
};

////////////////////////////////////////////////////////////////////////////////
/// @brief zero
////////////////////////////////////////////////////////////////////////////////

exports.nonZeroNumber = function (value, info, lang) {
  if (value !== 0.0) {
    var error = new arangodb.ArangoError();
    error.errorNum = arangodb.ERROR_ARANGO_VALIDATION_FAILED;
    error.errorMessage = "number must be non-zero";

    throw error;
  }
};