index.js

/**
 * @license
 * Copyright 2009 The Closure Library Authors
 * Copyright 2020 Daniel Wirtz / The long.js Authors.
 * 
 * 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

// WebAssembly optimizations to do native i64 multiplication and divide
var wasm = null;
try {
  wasm = new WebAssembly.Instance(new WebAssembly.Module(new Uint8Array([
    0, 97, 115, 109, 1, 0, 0, 0, 1, 13, 2, 96, 0, 1, 127, 96, 4, 127, 127, 127, 127, 1, 127, 3, 7, 6, 0, 1, 1, 1, 1, 1, 6, 6, 1, 127, 1, 65, 0, 11, 7, 50, 6, 3, 109, 117, 108, 0, 1, 5, 100, 105, 118, 95, 115, 0, 2, 5, 100, 105, 118, 95, 117, 0, 3, 5, 114, 101, 109, 95, 115, 0, 4, 5, 114, 101, 109, 95, 117, 0, 5, 8, 103, 101, 116, 95, 104, 105, 103, 104, 0, 0, 10, 191, 1, 6, 4, 0, 35, 0, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 126, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 127, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 128, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 129, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11, 36, 1, 1, 126, 32, 0, 173, 32, 1, 173, 66, 32, 134, 132, 32, 2, 173, 32, 3, 173, 66, 32, 134, 132, 130, 34, 4, 66, 32, 135, 167, 36, 0, 32, 4, 167, 11
  ])), {}).exports;
} catch (e) {
  // no wasm support :(
}

/**
 * Constructs a 64 bit two's-complement integer, given its low and high 32 bit values as *signed* integers.
 *  See the from* functions below for more convenient ways of constructing Longs.
 * @exports Long
 * @class A Long class for representing a 64 bit two's-complement integer value.
 * @param {number} low The low (signed) 32 bits of the long
 * @param {number} high The high (signed) 32 bits of the long
 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
 * @constructor
 */
function Long(low, high, unsigned) {

  /**
   * The low 32 bits as a signed value.
   * @type {number}
   */
  this.low = low | 0;

  /**
   * The high 32 bits as a signed value.
   * @type {number}
   */
  this.high = high | 0;

  /**
   * Whether unsigned or not.
   * @type {boolean}
   */
  this.unsigned = !!unsigned;
}

// The internal representation of a long is the two given signed, 32-bit values.
// We use 32-bit pieces because these are the size of integers on which
// Javascript performs bit-operations.  For operations like addition and
// multiplication, we split each number into 16 bit pieces, which can easily be
// multiplied within Javascript's floating-point representation without overflow
// or change in sign.
//
// In the algorithms below, we frequently reduce the negative case to the
// positive case by negating the input(s) and then post-processing the result.
// Note that we must ALWAYS check specially whether those values are MIN_VALUE
// (-2^63) because -MIN_VALUE == MIN_VALUE (since 2^63 cannot be represented as
// a positive number, it overflows back into a negative).  Not handling this
// case would often result in infinite recursion.
//
// Common constant values ZERO, ONE, NEG_ONE, etc. are defined below the from*
// methods on which they depend.

/**
 * An indicator used to reliably determine if an object is a Long or not.
 * @type {boolean}
 * @const
 * @private
 */
Long.prototype.__isLong__;

Object.defineProperty(Long.prototype, "__isLong__", { value: true });

/**
 * @function
 * @param {*} obj Object
 * @returns {boolean}
 * @inner
 */
function isLong(obj) {
  return (obj && obj["__isLong__"]) === true;
}

/**
 * Tests if the specified object is a Long.
 * @function
 * @param {*} obj Object
 * @returns {boolean}
 */
Long.isLong = isLong;

/**
 * A cache of the Long representations of small integer values.
 * @type {!Object}
 * @inner
 */
var INT_CACHE = {};

/**
 * A cache of the Long representations of small unsigned integer values.
 * @type {!Object}
 * @inner
 */
var UINT_CACHE = {};

/**
 * @param {number} value
 * @param {boolean=} unsigned
 * @returns {!Long}
 * @inner
 */
function fromInt(value, unsigned) {
  var obj, cachedObj, cache;
  if (unsigned) {
    value >>>= 0;
    if (cache = (0 <= value && value < 256)) {
      cachedObj = UINT_CACHE[value];
      if (cachedObj)
        return cachedObj;
    }
    obj = fromBits(value, 0, true);
    if (cache)
      UINT_CACHE[value] = obj;
    return obj;
  } else {
    value |= 0;
    if (cache = (-128 <= value && value < 128)) {
      cachedObj = INT_CACHE[value];
      if (cachedObj)
        return cachedObj;
    }
    obj = fromBits(value, value < 0 ? -1 : 0, false);
    if (cache)
      INT_CACHE[value] = obj;
    return obj;
  }
}

/**
 * Returns a Long representing the given 32 bit integer value.
 * @function
 * @param {number} value The 32 bit integer in question
 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
 * @returns {!Long} The corresponding Long value
 */
Long.fromInt = fromInt;

/**
 * @param {number} value
 * @param {boolean=} unsigned
 * @returns {!Long}
 * @inner
 */
function fromNumber(value, unsigned) {
  if (isNaN(value))
    return unsigned ? UZERO : ZERO;
  if (unsigned) {
    if (value < 0)
      return UZERO;
    if (value >= TWO_PWR_64_DBL)
      return MAX_UNSIGNED_VALUE;
  } else {
    if (value <= -TWO_PWR_63_DBL)
      return MIN_VALUE;
    if (value + 1 >= TWO_PWR_63_DBL)
      return MAX_VALUE;
  }
  if (value < 0)
    return fromNumber(-value, unsigned).neg();
  return fromBits((value % TWO_PWR_32_DBL) | 0, (value / TWO_PWR_32_DBL) | 0, unsigned);
}

/**
 * Returns a Long representing the given value, provided that it is a finite number. Otherwise, zero is returned.
 * @function
 * @param {number} value The number in question
 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
 * @returns {!Long} The corresponding Long value
 */
Long.fromNumber = fromNumber;

/**
 * @param {number} lowBits
 * @param {number} highBits
 * @param {boolean=} unsigned
 * @returns {!Long}
 * @inner
 */
function fromBits(lowBits, highBits, unsigned) {
  return new Long(lowBits, highBits, unsigned);
}

/**
 * Returns a Long representing the 64 bit integer that comes by concatenating the given low and high bits. Each is
 *  assumed to use 32 bits.
 * @function
 * @param {number} lowBits The low 32 bits
 * @param {number} highBits The high 32 bits
 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
 * @returns {!Long} The corresponding Long value
 */
Long.fromBits = fromBits;

/**
 * @function
 * @param {number} base
 * @param {number} exponent
 * @returns {number}
 * @inner
 */
var pow_dbl = Math.pow; // Used 4 times (4*8 to 15+4)

/**
 * @param {string} str
 * @param {(boolean|number)=} unsigned
 * @param {number=} radix
 * @returns {!Long}
 * @inner
 */
function fromString(str, unsigned, radix) {
  if (str.length === 0)
    throw Error('empty string');
  if (typeof unsigned === 'number') {
    // For goog.math.long compatibility
    radix = unsigned;
    unsigned = false;
  } else {
    unsigned = !!unsigned;
  }
  if (str === "NaN" || str === "Infinity" || str === "+Infinity" || str === "-Infinity")
    return unsigned ? UZERO : ZERO;
  radix = radix || 10;
  if (radix < 2 || 36 < radix)
    throw RangeError('radix');

  var p;
  if ((p = str.indexOf('-')) > 0)
    throw Error('interior hyphen');
  else if (p === 0) {
    return fromString(str.substring(1), unsigned, radix).neg();
  }

  // Do several (8) digits each time through the loop, so as to
  // minimize the calls to the very expensive emulated div.
  var radixToPower = fromNumber(pow_dbl(radix, 8));

  var result = ZERO;
  for (var i = 0; i < str.length; i += 8) {
    var size = Math.min(8, str.length - i),
      value = parseInt(str.substring(i, i + size), radix);
    if (size < 8) {
      var power = fromNumber(pow_dbl(radix, size));
      result = result.mul(power).add(fromNumber(value));
    } else {
      result = result.mul(radixToPower);
      result = result.add(fromNumber(value));
    }
  }
  result.unsigned = unsigned;
  return result;
}

/**
 * Returns a Long representation of the given string, written using the specified radix.
 * @function
 * @param {string} str The textual representation of the Long
 * @param {(boolean|number)=} unsigned Whether unsigned or not, defaults to signed
 * @param {number=} radix The radix in which the text is written (2-36), defaults to 10
 * @returns {!Long} The corresponding Long value
 */
Long.fromString = fromString;

/**
 * @function
 * @param {!Long|number|string|!{low: number, high: number, unsigned: boolean}} val
 * @param {boolean=} unsigned
 * @returns {!Long}
 * @inner
 */
function fromValue(val, unsigned) {
  if (typeof val === 'number')
    return fromNumber(val, unsigned);
  if (typeof val === 'string')
    return fromString(val, unsigned);
  // Throws for non-objects, converts non-instanceof Long:
  return fromBits(val.low, val.high, typeof unsigned === 'boolean' ? unsigned : val.unsigned);
}

/**
 * Converts the specified value to a Long using the appropriate from* function for its type.
 * @function
 * @param {!Long|number|string|!{low: number, high: number, unsigned: boolean}} val Value
 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
 * @returns {!Long}
 */
Long.fromValue = fromValue;

// NOTE: the compiler should inline these constant values below and then remove these variables, so there should be
// no runtime penalty for these.

/**
 * @type {number}
 * @const
 * @inner
 */
var TWO_PWR_16_DBL = 1 << 16;

/**
 * @type {number}
 * @const
 * @inner
 */
var TWO_PWR_24_DBL = 1 << 24;

/**
 * @type {number}
 * @const
 * @inner
 */
var TWO_PWR_32_DBL = TWO_PWR_16_DBL * TWO_PWR_16_DBL;

/**
 * @type {number}
 * @const
 * @inner
 */
var TWO_PWR_64_DBL = TWO_PWR_32_DBL * TWO_PWR_32_DBL;

/**
 * @type {number}
 * @const
 * @inner
 */
var TWO_PWR_63_DBL = TWO_PWR_64_DBL / 2;

/**
 * @type {!Long}
 * @const
 * @inner
 */
var TWO_PWR_24 = fromInt(TWO_PWR_24_DBL);

/**
 * @type {!Long}
 * @inner
 */
var ZERO = fromInt(0);

/**
 * Signed zero.
 * @type {!Long}
 */
Long.ZERO = ZERO;

/**
 * @type {!Long}
 * @inner
 */
var UZERO = fromInt(0, true);

/**
 * Unsigned zero.
 * @type {!Long}
 */
Long.UZERO = UZERO;

/**
 * @type {!Long}
 * @inner
 */
var ONE = fromInt(1);

/**
 * Signed one.
 * @type {!Long}
 */
Long.ONE = ONE;

/**
 * @type {!Long}
 * @inner
 */
var UONE = fromInt(1, true);

/**
 * Unsigned one.
 * @type {!Long}
 */
Long.UONE = UONE;

/**
 * @type {!Long}
 * @inner
 */
var NEG_ONE = fromInt(-1);

/**
 * Signed negative one.
 * @type {!Long}
 */
Long.NEG_ONE = NEG_ONE;

/**
 * @type {!Long}
 * @inner
 */
var MAX_VALUE = fromBits(0xFFFFFFFF | 0, 0x7FFFFFFF | 0, false);

/**
 * Maximum signed value.
 * @type {!Long}
 */
Long.MAX_VALUE = MAX_VALUE;

/**
 * @type {!Long}
 * @inner
 */
var MAX_UNSIGNED_VALUE = fromBits(0xFFFFFFFF | 0, 0xFFFFFFFF | 0, true);

/**
 * Maximum unsigned value.
 * @type {!Long}
 */
Long.MAX_UNSIGNED_VALUE = MAX_UNSIGNED_VALUE;

/**
 * @type {!Long}
 * @inner
 */
var MIN_VALUE = fromBits(0, 0x80000000 | 0, false);

/**
 * Minimum signed value.
 * @type {!Long}
 */
Long.MIN_VALUE = MIN_VALUE;

/**
 * @alias Long.prototype
 * @inner
 */
var LongPrototype = Long.prototype;

/**
 * Converts the Long to a 32 bit integer, assuming it is a 32 bit integer.
 * @this {!Long}
 * @returns {number}
 */
LongPrototype.toInt = function toInt() {
  return this.unsigned ? this.low >>> 0 : this.low;
};

/**
 * Converts the Long to a the nearest floating-point representation of this value (double, 53 bit mantissa).
 * @this {!Long}
 * @returns {number}
 */
LongPrototype.toNumber = function toNumber() {
  if (this.unsigned)
    return ((this.high >>> 0) * TWO_PWR_32_DBL) + (this.low >>> 0);
  return this.high * TWO_PWR_32_DBL + (this.low >>> 0);
};

/**
 * Converts the Long to a string written in the specified radix.
 * @this {!Long}
 * @param {number=} radix Radix (2-36), defaults to 10
 * @returns {string}
 * @override
 * @throws {RangeError} If `radix` is out of range
 */
LongPrototype.toString = function toString(radix) {
  radix = radix || 10;
  if (radix < 2 || 36 < radix)
    throw RangeError('radix');
  if (this.isZero())
    return '0';
  if (this.isNegative()) { // Unsigned Longs are never negative
    if (this.eq(MIN_VALUE)) {
      // We need to change the Long value before it can be negated, so we remove
      // the bottom-most digit in this base and then recurse to do the rest.
      var radixLong = fromNumber(radix),
        div = this.div(radixLong),
        rem1 = div.mul(radixLong).sub(this);
      return div.toString(radix) + rem1.toInt().toString(radix);
    } else
      return '-' + this.neg().toString(radix);
  }

  // Do several (6) digits each time through the loop, so as to
  // minimize the calls to the very expensive emulated div.
  var radixToPower = fromNumber(pow_dbl(radix, 6), this.unsigned),
    rem = this;
  var result = '';
  while (true) {
    var remDiv = rem.div(radixToPower),
      intval = rem.sub(remDiv.mul(radixToPower)).toInt() >>> 0,
      digits = intval.toString(radix);
    rem = remDiv;
    if (rem.isZero())
      return digits + result;
    else {
      while (digits.length < 6)
        digits = '0' + digits;
      result = '' + digits + result;
    }
  }
};

/**
 * Gets the high 32 bits as a signed integer.
 * @this {!Long}
 * @returns {number} Signed high bits
 */
LongPrototype.getHighBits = function getHighBits() {
  return this.high;
};

/**
 * Gets the high 32 bits as an unsigned integer.
 * @this {!Long}
 * @returns {number} Unsigned high bits
 */
LongPrototype.getHighBitsUnsigned = function getHighBitsUnsigned() {
  return this.high >>> 0;
};

/**
 * Gets the low 32 bits as a signed integer.
 * @this {!Long}
 * @returns {number} Signed low bits
 */
LongPrototype.getLowBits = function getLowBits() {
  return this.low;
};

/**
 * Gets the low 32 bits as an unsigned integer.
 * @this {!Long}
 * @returns {number} Unsigned low bits
 */
LongPrototype.getLowBitsUnsigned = function getLowBitsUnsigned() {
  return this.low >>> 0;
};

/**
 * Gets the number of bits needed to represent the absolute value of this Long.
 * @this {!Long}
 * @returns {number}
 */
LongPrototype.getNumBitsAbs = function getNumBitsAbs() {
  if (this.isNegative()) // Unsigned Longs are never negative
    return this.eq(MIN_VALUE) ? 64 : this.neg().getNumBitsAbs();
  var val = this.high != 0 ? this.high : this.low;
  for (var bit = 31; bit > 0; bit--)
    if ((val & (1 << bit)) != 0)
      break;
  return this.high != 0 ? bit + 33 : bit + 1;
};

/**
 * Tests if this Long's value equals zero.
 * @this {!Long}
 * @returns {boolean}
 */
LongPrototype.isZero = function isZero() {
  return this.high === 0 && this.low === 0;
};

/**
 * Tests if this Long's value equals zero. This is an alias of {@link Long#isZero}.
 * @returns {boolean}
 */
LongPrototype.eqz = LongPrototype.isZero;

/**
 * Tests if this Long's value is negative.
 * @this {!Long}
 * @returns {boolean}
 */
LongPrototype.isNegative = function isNegative() {
  return !this.unsigned && this.high < 0;
};

/**
 * Tests if this Long's value is positive.
 * @this {!Long}
 * @returns {boolean}
 */
LongPrototype.isPositive = function isPositive() {
  return this.unsigned || this.high >= 0;
};

/**
 * Tests if this Long's value is odd.
 * @this {!Long}
 * @returns {boolean}
 */
LongPrototype.isOdd = function isOdd() {
  return (this.low & 1) === 1;
};

/**
 * Tests if this Long's value is even.
 * @this {!Long}
 * @returns {boolean}
 */
LongPrototype.isEven = function isEven() {
  return (this.low & 1) === 0;
};

/**
 * Tests if this Long's value equals the specified's.
 * @this {!Long}
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.equals = function equals(other) {
  if (!isLong(other))
    other = fromValue(other);
  if (this.unsigned !== other.unsigned && (this.high >>> 31) === 1 && (other.high >>> 31) === 1)
    return false;
  return this.high === other.high && this.low === other.low;
};

/**
 * Tests if this Long's value equals the specified's. This is an alias of {@link Long#equals}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.eq = LongPrototype.equals;

/**
 * Tests if this Long's value differs from the specified's.
 * @this {!Long}
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.notEquals = function notEquals(other) {
  return !this.eq(/* validates */ other);
};

/**
 * Tests if this Long's value differs from the specified's. This is an alias of {@link Long#notEquals}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.neq = LongPrototype.notEquals;

/**
 * Tests if this Long's value differs from the specified's. This is an alias of {@link Long#notEquals}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.ne = LongPrototype.notEquals;

/**
 * Tests if this Long's value is less than the specified's.
 * @this {!Long}
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.lessThan = function lessThan(other) {
  return this.comp(/* validates */ other) < 0;
};

/**
 * Tests if this Long's value is less than the specified's. This is an alias of {@link Long#lessThan}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.lt = LongPrototype.lessThan;

/**
 * Tests if this Long's value is less than or equal the specified's.
 * @this {!Long}
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.lessThanOrEqual = function lessThanOrEqual(other) {
  return this.comp(/* validates */ other) <= 0;
};

/**
 * Tests if this Long's value is less than or equal the specified's. This is an alias of {@link Long#lessThanOrEqual}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.lte = LongPrototype.lessThanOrEqual;

/**
 * Tests if this Long's value is less than or equal the specified's. This is an alias of {@link Long#lessThanOrEqual}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.le = LongPrototype.lessThanOrEqual;

/**
 * Tests if this Long's value is greater than the specified's.
 * @this {!Long}
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.greaterThan = function greaterThan(other) {
  return this.comp(/* validates */ other) > 0;
};

/**
 * Tests if this Long's value is greater than the specified's. This is an alias of {@link Long#greaterThan}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.gt = LongPrototype.greaterThan;

/**
 * Tests if this Long's value is greater than or equal the specified's.
 * @this {!Long}
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.greaterThanOrEqual = function greaterThanOrEqual(other) {
  return this.comp(/* validates */ other) >= 0;
};

/**
 * Tests if this Long's value is greater than or equal the specified's. This is an alias of {@link Long#greaterThanOrEqual}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.gte = LongPrototype.greaterThanOrEqual;

/**
 * Tests if this Long's value is greater than or equal the specified's. This is an alias of {@link Long#greaterThanOrEqual}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {boolean}
 */
LongPrototype.ge = LongPrototype.greaterThanOrEqual;

/**
 * Compares this Long's value with the specified's.
 * @this {!Long}
 * @param {!Long|number|string} other Other value
 * @returns {number} 0 if they are the same, 1 if the this is greater and -1
 *  if the given one is greater
 */
LongPrototype.compare = function compare(other) {
  if (!isLong(other))
    other = fromValue(other);
  if (this.eq(other))
    return 0;
  var thisNeg = this.isNegative(),
    otherNeg = other.isNegative();
  if (thisNeg && !otherNeg)
    return -1;
  if (!thisNeg && otherNeg)
    return 1;
  // At this point the sign bits are the same
  if (!this.unsigned)
    return this.sub(other).isNegative() ? -1 : 1;
  // Both are positive if at least one is unsigned
  return (other.high >>> 0) > (this.high >>> 0) || (other.high === this.high && (other.low >>> 0) > (this.low >>> 0)) ? -1 : 1;
};

/**
 * Compares this Long's value with the specified's. This is an alias of {@link Long#compare}.
 * @function
 * @param {!Long|number|string} other Other value
 * @returns {number} 0 if they are the same, 1 if the this is greater and -1
 *  if the given one is greater
 */
LongPrototype.comp = LongPrototype.compare;

/**
 * Negates this Long's value.
 * @this {!Long}
 * @returns {!Long} Negated Long
 */
LongPrototype.negate = function negate() {
  if (!this.unsigned && this.eq(MIN_VALUE))
    return MIN_VALUE;
  return this.not().add(ONE);
};

/**
 * Negates this Long's value. This is an alias of {@link Long#negate}.
 * @function
 * @returns {!Long} Negated Long
 */
LongPrototype.neg = LongPrototype.negate;

/**
 * Returns the sum of this and the specified Long.
 * @this {!Long}
 * @param {!Long|number|string} addend Addend
 * @returns {!Long} Sum
 */
LongPrototype.add = function add(addend) {
  if (!isLong(addend))
    addend = fromValue(addend);

  // Divide each number into 4 chunks of 16 bits, and then sum the chunks.

  var a48 = this.high >>> 16;
  var a32 = this.high & 0xFFFF;
  var a16 = this.low >>> 16;
  var a00 = this.low & 0xFFFF;

  var b48 = addend.high >>> 16;
  var b32 = addend.high & 0xFFFF;
  var b16 = addend.low >>> 16;
  var b00 = addend.low & 0xFFFF;

  var c48 = 0, c32 = 0, c16 = 0, c00 = 0;
  c00 += a00 + b00;
  c16 += c00 >>> 16;
  c00 &= 0xFFFF;
  c16 += a16 + b16;
  c32 += c16 >>> 16;
  c16 &= 0xFFFF;
  c32 += a32 + b32;
  c48 += c32 >>> 16;
  c32 &= 0xFFFF;
  c48 += a48 + b48;
  c48 &= 0xFFFF;
  return fromBits((c16 << 16) | c00, (c48 << 16) | c32, this.unsigned);
};

/**
 * Returns the difference of this and the specified Long.
 * @this {!Long}
 * @param {!Long|number|string} subtrahend Subtrahend
 * @returns {!Long} Difference
 */
LongPrototype.subtract = function subtract(subtrahend) {
  if (!isLong(subtrahend))
    subtrahend = fromValue(subtrahend);
  return this.add(subtrahend.neg());
};

/**
 * Returns the difference of this and the specified Long. This is an alias of {@link Long#subtract}.
 * @function
 * @param {!Long|number|string} subtrahend Subtrahend
 * @returns {!Long} Difference
 */
LongPrototype.sub = LongPrototype.subtract;

/**
 * Returns the product of this and the specified Long.
 * @this {!Long}
 * @param {!Long|number|string} multiplier Multiplier
 * @returns {!Long} Product
 */
LongPrototype.multiply = function multiply(multiplier) {
  if (this.isZero())
    return this;
  if (!isLong(multiplier))
    multiplier = fromValue(multiplier);

  // use wasm support if present
  if (wasm) {
    var low = wasm["mul"](this.low,
      this.high,
      multiplier.low,
      multiplier.high);
    return fromBits(low, wasm["get_high"](), this.unsigned);
  }

  if (multiplier.isZero())
    return this.unsigned ? UZERO : ZERO;
  if (this.eq(MIN_VALUE))
    return multiplier.isOdd() ? MIN_VALUE : ZERO;
  if (multiplier.eq(MIN_VALUE))
    return this.isOdd() ? MIN_VALUE : ZERO;

  if (this.isNegative()) {
    if (multiplier.isNegative())
      return this.neg().mul(multiplier.neg());
    else
      return this.neg().mul(multiplier).neg();
  } else if (multiplier.isNegative())
    return this.mul(multiplier.neg()).neg();

  // If both longs are small, use float multiplication
  if (this.lt(TWO_PWR_24) && multiplier.lt(TWO_PWR_24))
    return fromNumber(this.toNumber() * multiplier.toNumber(), this.unsigned);

  // Divide each long into 4 chunks of 16 bits, and then add up 4x4 products.
  // We can skip products that would overflow.

  var a48 = this.high >>> 16;
  var a32 = this.high & 0xFFFF;
  var a16 = this.low >>> 16;
  var a00 = this.low & 0xFFFF;

  var b48 = multiplier.high >>> 16;
  var b32 = multiplier.high & 0xFFFF;
  var b16 = multiplier.low >>> 16;
  var b00 = multiplier.low & 0xFFFF;

  var c48 = 0, c32 = 0, c16 = 0, c00 = 0;
  c00 += a00 * b00;
  c16 += c00 >>> 16;
  c00 &= 0xFFFF;
  c16 += a16 * b00;
  c32 += c16 >>> 16;
  c16 &= 0xFFFF;
  c16 += a00 * b16;
  c32 += c16 >>> 16;
  c16 &= 0xFFFF;
  c32 += a32 * b00;
  c48 += c32 >>> 16;
  c32 &= 0xFFFF;
  c32 += a16 * b16;
  c48 += c32 >>> 16;
  c32 &= 0xFFFF;
  c32 += a00 * b32;
  c48 += c32 >>> 16;
  c32 &= 0xFFFF;
  c48 += a48 * b00 + a32 * b16 + a16 * b32 + a00 * b48;
  c48 &= 0xFFFF;
  return fromBits((c16 << 16) | c00, (c48 << 16) | c32, this.unsigned);
};

/**
 * Returns the product of this and the specified Long. This is an alias of {@link Long#multiply}.
 * @function
 * @param {!Long|number|string} multiplier Multiplier
 * @returns {!Long} Product
 */
LongPrototype.mul = LongPrototype.multiply;

/**
 * Returns this Long divided by the specified. The result is signed if this Long is signed or
 *  unsigned if this Long is unsigned.
 * @this {!Long}
 * @param {!Long|number|string} divisor Divisor
 * @returns {!Long} Quotient
 */
LongPrototype.divide = function divide(divisor) {
  if (!isLong(divisor))
    divisor = fromValue(divisor);
  if (divisor.isZero())
    throw Error('division by zero');

  // use wasm support if present
  if (wasm) {
    // guard against signed division overflow: the largest
    // negative number / -1 would be 1 larger than the largest
    // positive number, due to two's complement.
    if (!this.unsigned &&
      this.high === -0x80000000 &&
      divisor.low === -1 && divisor.high === -1) {
      // be consistent with non-wasm code path
      return this;
    }
    var low = (this.unsigned ? wasm["div_u"] : wasm["div_s"])(
      this.low,
      this.high,
      divisor.low,
      divisor.high
    );
    return fromBits(low, wasm["get_high"](), this.unsigned);
  }

  if (this.isZero())
    return this.unsigned ? UZERO : ZERO;
  var approx, rem, res;
  if (!this.unsigned) {
    // This section is only relevant for signed longs and is derived from the
    // closure library as a whole.
    if (this.eq(MIN_VALUE)) {
      if (divisor.eq(ONE) || divisor.eq(NEG_ONE))
        return MIN_VALUE;  // recall that -MIN_VALUE == MIN_VALUE
      else if (divisor.eq(MIN_VALUE))
        return ONE;
      else {
        // At this point, we have |other| >= 2, so |this/other| < |MIN_VALUE|.
        var halfThis = this.shr(1);
        approx = halfThis.div(divisor).shl(1);
        if (approx.eq(ZERO)) {
          return divisor.isNegative() ? ONE : NEG_ONE;
        } else {
          rem = this.sub(divisor.mul(approx));
          res = approx.add(rem.div(divisor));
          return res;
        }
      }
    } else if (divisor.eq(MIN_VALUE))
      return this.unsigned ? UZERO : ZERO;
    if (this.isNegative()) {
      if (divisor.isNegative())
        return this.neg().div(divisor.neg());
      return this.neg().div(divisor).neg();
    } else if (divisor.isNegative())
      return this.div(divisor.neg()).neg();
    res = ZERO;
  } else {
    // The algorithm below has not been made for unsigned longs. It's therefore
    // required to take special care of the MSB prior to running it.
    if (!divisor.unsigned)
      divisor = divisor.toUnsigned();
    if (divisor.gt(this))
      return UZERO;
    if (divisor.gt(this.shru(1))) // 15 >>> 1 = 7 ; with divisor = 8 ; true
      return UONE;
    res = UZERO;
  }

  // Repeat the following until the remainder is less than other:  find a
  // floating-point that approximates remainder / other *from below*, add this
  // into the result, and subtract it from the remainder.  It is critical that
  // the approximate value is less than or equal to the real value so that the
  // remainder never becomes negative.
  rem = this;
  while (rem.gte(divisor)) {
    // Approximate the result of division. This may be a little greater or
    // smaller than the actual value.
    approx = Math.max(1, Math.floor(rem.toNumber() / divisor.toNumber()));

    // We will tweak the approximate result by changing it in the 48-th digit or
    // the smallest non-fractional digit, whichever is larger.
    var log2 = Math.ceil(Math.log(approx) / Math.LN2),
      delta = (log2 <= 48) ? 1 : pow_dbl(2, log2 - 48),

      // Decrease the approximation until it is smaller than the remainder.  Note
      // that if it is too large, the product overflows and is negative.
      approxRes = fromNumber(approx),
      approxRem = approxRes.mul(divisor);
    while (approxRem.isNegative() || approxRem.gt(rem)) {
      approx -= delta;
      approxRes = fromNumber(approx, this.unsigned);
      approxRem = approxRes.mul(divisor);
    }

    // We know the answer can't be zero... and actually, zero would cause
    // infinite recursion since we would make no progress.
    if (approxRes.isZero())
      approxRes = ONE;

    res = res.add(approxRes);
    rem = rem.sub(approxRem);
  }
  return res;
};

/**
 * Returns this Long divided by the specified. This is an alias of {@link Long#divide}.
 * @function
 * @param {!Long|number|string} divisor Divisor
 * @returns {!Long} Quotient
 */
LongPrototype.div = LongPrototype.divide;

/**
 * Returns this Long modulo the specified.
 * @this {!Long}
 * @param {!Long|number|string} divisor Divisor
 * @returns {!Long} Remainder
 */
LongPrototype.modulo = function modulo(divisor) {
  if (!isLong(divisor))
    divisor = fromValue(divisor);

  // use wasm support if present
  if (wasm) {
    var low = (this.unsigned ? wasm["rem_u"] : wasm["rem_s"])(
      this.low,
      this.high,
      divisor.low,
      divisor.high
    );
    return fromBits(low, wasm["get_high"](), this.unsigned);
  }

  return this.sub(this.div(divisor).mul(divisor));
};

/**
 * Returns this Long modulo the specified. This is an alias of {@link Long#modulo}.
 * @function
 * @param {!Long|number|string} divisor Divisor
 * @returns {!Long} Remainder
 */
LongPrototype.mod = LongPrototype.modulo;

/**
 * Returns this Long modulo the specified. This is an alias of {@link Long#modulo}.
 * @function
 * @param {!Long|number|string} divisor Divisor
 * @returns {!Long} Remainder
 */
LongPrototype.rem = LongPrototype.modulo;

/**
 * Returns the bitwise NOT of this Long.
 * @this {!Long}
 * @returns {!Long}
 */
LongPrototype.not = function not() {
  return fromBits(~this.low, ~this.high, this.unsigned);
};

/**
 * Returns the bitwise AND of this Long and the specified.
 * @this {!Long}
 * @param {!Long|number|string} other Other Long
 * @returns {!Long}
 */
LongPrototype.and = function and(other) {
  if (!isLong(other))
    other = fromValue(other);
  return fromBits(this.low & other.low, this.high & other.high, this.unsigned);
};

/**
 * Returns the bitwise OR of this Long and the specified.
 * @this {!Long}
 * @param {!Long|number|string} other Other Long
 * @returns {!Long}
 */
LongPrototype.or = function or(other) {
  if (!isLong(other))
    other = fromValue(other);
  return fromBits(this.low | other.low, this.high | other.high, this.unsigned);
};

/**
 * Returns the bitwise XOR of this Long and the given one.
 * @this {!Long}
 * @param {!Long|number|string} other Other Long
 * @returns {!Long}
 */
LongPrototype.xor = function xor(other) {
  if (!isLong(other))
    other = fromValue(other);
  return fromBits(this.low ^ other.low, this.high ^ other.high, this.unsigned);
};

/**
 * Returns this Long with bits shifted to the left by the given amount.
 * @this {!Long}
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Shifted Long
 */
LongPrototype.shiftLeft = function shiftLeft(numBits) {
  if (isLong(numBits))
    numBits = numBits.toInt();
  if ((numBits &= 63) === 0)
    return this;
  else if (numBits < 32)
    return fromBits(this.low << numBits, (this.high << numBits) | (this.low >>> (32 - numBits)), this.unsigned);
  else
    return fromBits(0, this.low << (numBits - 32), this.unsigned);
};

/**
 * Returns this Long with bits shifted to the left by the given amount. This is an alias of {@link Long#shiftLeft}.
 * @function
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Shifted Long
 */
LongPrototype.shl = LongPrototype.shiftLeft;

/**
 * Returns this Long with bits arithmetically shifted to the right by the given amount.
 * @this {!Long}
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Shifted Long
 */
LongPrototype.shiftRight = function shiftRight(numBits) {
  if (isLong(numBits))
    numBits = numBits.toInt();
  if ((numBits &= 63) === 0)
    return this;
  else if (numBits < 32)
    return fromBits((this.low >>> numBits) | (this.high << (32 - numBits)), this.high >> numBits, this.unsigned);
  else
    return fromBits(this.high >> (numBits - 32), this.high >= 0 ? 0 : -1, this.unsigned);
};

/**
 * Returns this Long with bits arithmetically shifted to the right by the given amount. This is an alias of {@link Long#shiftRight}.
 * @function
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Shifted Long
 */
LongPrototype.shr = LongPrototype.shiftRight;

/**
 * Returns this Long with bits logically shifted to the right by the given amount.
 * @this {!Long}
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Shifted Long
 */
LongPrototype.shiftRightUnsigned = function shiftRightUnsigned(numBits) {
  if (isLong(numBits)) numBits = numBits.toInt();
  if ((numBits &= 63) === 0) return this;
  if (numBits < 32) return fromBits((this.low >>> numBits) | (this.high << (32 - numBits)), this.high >>> numBits, this.unsigned);
  if (numBits === 32) return fromBits(this.high, 0, this.unsigned);
  return fromBits(this.high >>> (numBits - 32), 0, this.unsigned);
};

/**
 * Returns this Long with bits logically shifted to the right by the given amount. This is an alias of {@link Long#shiftRightUnsigned}.
 * @function
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Shifted Long
 */
LongPrototype.shru = LongPrototype.shiftRightUnsigned;

/**
 * Returns this Long with bits logically shifted to the right by the given amount. This is an alias of {@link Long#shiftRightUnsigned}.
 * @function
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Shifted Long
 */
LongPrototype.shr_u = LongPrototype.shiftRightUnsigned;

/**
 * Returns this Long with bits rotated to the left by the given amount.
 * @this {!Long}
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Rotated Long
 */
LongPrototype.rotateLeft = function rotateLeft(numBits) {
  var b;
  if (isLong(numBits)) numBits = numBits.toInt();
  if ((numBits &= 63) === 0) return this;
  if (numBits === 32) return fromBits(this.high, this.low, this.unsigned);
  if (numBits < 32) {
    b = (32 - numBits);
    return fromBits(((this.low << numBits) | (this.high >>> b)), ((this.high << numBits) | (this.low >>> b)), this.unsigned);
  }
  numBits -= 32;
  b = (32 - numBits);
  return fromBits(((this.high << numBits) | (this.low >>> b)), ((this.low << numBits) | (this.high >>> b)), this.unsigned);
}
/**
 * Returns this Long with bits rotated to the left by the given amount. This is an alias of {@link Long#rotateLeft}.
 * @function
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Rotated Long
 */
LongPrototype.rotl = LongPrototype.rotateLeft;

/**
 * Returns this Long with bits rotated to the right by the given amount.
 * @this {!Long}
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Rotated Long
 */
LongPrototype.rotateRight = function rotateRight(numBits) {
  var b;
  if (isLong(numBits)) numBits = numBits.toInt();
  if ((numBits &= 63) === 0) return this;
  if (numBits === 32) return fromBits(this.high, this.low, this.unsigned);
  if (numBits < 32) {
    b = (32 - numBits);
    return fromBits(((this.high << b) | (this.low >>> numBits)), ((this.low << b) | (this.high >>> numBits)), this.unsigned);
  }
  numBits -= 32;
  b = (32 - numBits);
  return fromBits(((this.low << b) | (this.high >>> numBits)), ((this.high << b) | (this.low >>> numBits)), this.unsigned);
}
/**
 * Returns this Long with bits rotated to the right by the given amount. This is an alias of {@link Long#rotateRight}.
 * @function
 * @param {number|!Long} numBits Number of bits
 * @returns {!Long} Rotated Long
 */
LongPrototype.rotr = LongPrototype.rotateRight;

/**
 * Converts this Long to signed.
 * @this {!Long}
 * @returns {!Long} Signed long
 */
LongPrototype.toSigned = function toSigned() {
  if (!this.unsigned)
    return this;
  return fromBits(this.low, this.high, false);
};

/**
 * Converts this Long to unsigned.
 * @this {!Long}
 * @returns {!Long} Unsigned long
 */
LongPrototype.toUnsigned = function toUnsigned() {
  if (this.unsigned)
    return this;
  return fromBits(this.low, this.high, true);
};

/**
 * Converts this Long to its byte representation.
 * @param {boolean=} le Whether little or big endian, defaults to big endian
 * @this {!Long}
 * @returns {!Array.<number>} Byte representation
 */
LongPrototype.toBytes = function toBytes(le) {
  return le ? this.toBytesLE() : this.toBytesBE();
};

/**
 * Converts this Long to its little endian byte representation.
 * @this {!Long}
 * @returns {!Array.<number>} Little endian byte representation
 */
LongPrototype.toBytesLE = function toBytesLE() {
  var hi = this.high,
    lo = this.low;
  return [
    lo & 0xff,
    lo >>> 8 & 0xff,
    lo >>> 16 & 0xff,
    lo >>> 24,
    hi & 0xff,
    hi >>> 8 & 0xff,
    hi >>> 16 & 0xff,
    hi >>> 24
  ];
};

/**
 * Converts this Long to its big endian byte representation.
 * @this {!Long}
 * @returns {!Array.<number>} Big endian byte representation
 */
LongPrototype.toBytesBE = function toBytesBE() {
  var hi = this.high,
    lo = this.low;
  return [
    hi >>> 24,
    hi >>> 16 & 0xff,
    hi >>> 8 & 0xff,
    hi & 0xff,
    lo >>> 24,
    lo >>> 16 & 0xff,
    lo >>> 8 & 0xff,
    lo & 0xff
  ];
};

/**
 * Creates a Long from its byte representation.
 * @param {!Array.<number>} bytes Byte representation
 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
 * @param {boolean=} le Whether little or big endian, defaults to big endian
 * @returns {Long} The corresponding Long value
 */
Long.fromBytes = function fromBytes(bytes, unsigned, le) {
  return le ? Long.fromBytesLE(bytes, unsigned) : Long.fromBytesBE(bytes, unsigned);
};

/**
 * Creates a Long from its little endian byte representation.
 * @param {!Array.<number>} bytes Little endian byte representation
 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
 * @returns {Long} The corresponding Long value
 */
Long.fromBytesLE = function fromBytesLE(bytes, unsigned) {
  return new Long(
    bytes[0] |
    bytes[1] << 8 |
    bytes[2] << 16 |
    bytes[3] << 24,
    bytes[4] |
    bytes[5] << 8 |
    bytes[6] << 16 |
    bytes[7] << 24,
    unsigned
  );
};

/**
 * Creates a Long from its big endian byte representation.
 * @param {!Array.<number>} bytes Big endian byte representation
 * @param {boolean=} unsigned Whether unsigned or not, defaults to signed
 * @returns {Long} The corresponding Long value
 */
Long.fromBytesBE = function fromBytesBE(bytes, unsigned) {
  return new Long(
    bytes[4] << 24 |
    bytes[5] << 16 |
    bytes[6] << 8 |
    bytes[7],
    bytes[0] << 24 |
    bytes[1] << 16 |
    bytes[2] << 8 |
    bytes[3],
    unsigned
  );
};

export default Long;