rochars / byte-data

 * Copyright (c) 2017-2018 Rafael da Silva Rocha.

 *

 * Permission is hereby granted, free of charge, to any person obtaining

 * a copy of this software and associated documentation files (the

 * "Software"), to deal in the Software without restriction, including

 * without limitation the rights to use, copy, modify, merge, publish,

 * distribute, sublicense, and/or sell copies of the Software, and to

 * permit persons to whom the Software is furnished to do so, subject to

 * the following conditions:

 *

 * The above copyright notice and this permission notice shall be

 * included in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF

 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND

 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE

 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION

 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION

 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 *

 */

/**

 * @fileoverview Functions to validate input.

 * @see https://github.com/rochars/byte-data

 */

const TYPE_ERR = 'Unsupported type';

const TYPE_NAN = 'Argument is not a valid number';

/**

 * Validate that the value is not null or undefined.

 * @param {*} value The value.

 * @throws {Error} If the value is not Number or Boolean.

 */

export function validateIsNumber(value) {

  if (value === undefined || value === null) {

    throw new Error(TYPE_NAN);

  } else if (value.constructor != Number && value.constructor != Boolean) {

    throw new Error(TYPE_NAN);

  }

}

/**

 * Validate the type definition of floating-point numbers.

 * @param {number} bits The number of bits.

 * @throws {Error} If the type definition is not valid.

 * @private

 */

export function validateFloatType(bits) {

  if (!bits || bits !== 16 && bits !== 32 && bits !== 64) {

    throw new Error(TYPE_ERR + ': float, bits: ' + bits);

  }

}

/**

 * Validate the type definition of integers.

 * @param {number} bits The number of bits.

 * @throws {Error} If the type definition is not valid.

 * @private

 */

export function validateIntType(bits) {

  if (!bits || bits < 1 || bits > 53) {

    throw new Error(TYPE_ERR + ': int, bits: ' + bits);

  }

}