@webkrafters/long-count
Version:
Long Count - intervals and timeout capable of handling superbly long wait times surviving device sleep and wake cycles.
217 lines (216 loc) • 9.07 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports.add = void 0;
exports.fromScalar = fromScalar;
exports.toMyInteger = exports.subtract = void 0;
function _toArray(r) { return _arrayWithHoles(r) || _iterableToArray(r) || _unsupportedIterableToArray(r) || _nonIterableRest(); }
function _toConsumableArray(r) { return _arrayWithoutHoles(r) || _iterableToArray(r) || _unsupportedIterableToArray(r) || _nonIterableSpread(); }
function _nonIterableSpread() { throw new TypeError("Invalid attempt to spread non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _iterableToArray(r) { if ("undefined" != typeof Symbol && null != r[Symbol.iterator] || null != r["@@iterator"]) return Array.from(r); }
function _arrayWithoutHoles(r) { if (Array.isArray(r)) return _arrayLikeToArray(r); }
function _slicedToArray(r, e) { return _arrayWithHoles(r) || _iterableToArrayLimit(r, e) || _unsupportedIterableToArray(r, e) || _nonIterableRest(); }
function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }
function _iterableToArrayLimit(r, l) { var t = null == r ? null : "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (null != t) { var e, n, i, u, a = [], f = !0, o = !1; try { if (i = (t = t.call(r)).next, 0 === l) { if (Object(t) !== t) return; f = !1; } else for (; !(f = (e = i.call(t)).done) && (a.push(e.value), a.length !== l); f = !0); } catch (r) { o = !0, n = r; } finally { try { if (!f && null != t["return"] && (u = t["return"](), Object(u) !== u)) return; } finally { if (o) throw n; } } return a; } }
function _arrayWithHoles(r) { if (Array.isArray(r)) return r; }
function _createForOfIteratorHelper(r, e) { var t = "undefined" != typeof Symbol && r[Symbol.iterator] || r["@@iterator"]; if (!t) { if (Array.isArray(r) || (t = _unsupportedIterableToArray(r)) || e && r && "number" == typeof r.length) { t && (r = t); var _n = 0, F = function F() {}; return { s: F, n: function n() { return _n >= r.length ? { done: !0 } : { done: !1, value: r[_n++] }; }, e: function e(r) { throw r; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var o, a = !0, u = !1; return { s: function s() { t = t.call(r); }, n: function n() { var r = t.next(); return a = r.done, r; }, e: function e(r) { u = !0, o = r; }, f: function f() { try { a || null == t["return"] || t["return"](); } finally { if (u) throw o; } } }; }
function _unsupportedIterableToArray(r, a) { if (r) { if ("string" == typeof r) return _arrayLikeToArray(r, a); var t = {}.toString.call(r).slice(8, -1); return "Object" === t && r.constructor && (t = r.constructor.name), "Map" === t || "Set" === t ? Array.from(r) : "Arguments" === t || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(t) ? _arrayLikeToArray(r, a) : void 0; } }
function _arrayLikeToArray(r, a) { (null == a || a > r.length) && (a = r.length); for (var e = 0, n = Array(a); e < a; e++) n[e] = r[e]; return n; }
var BASE = 10;
var MAX_INT_LENGTH = "".concat(Number.MAX_SAFE_INTEGER).length;
var STRING_PATTERN = /^[0-9]+\.?[0-9]*([eE]?[0-9]+)?$/;
var addDigit = function addDigit(adder, addend) {
var carry = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
var value = adder + addend + carry;
return value < BASE ? {
value: value,
carry: 0
} : {
value: value - BASE,
carry: 1
};
};
var trimLeadingZeros = function trimLeadingZeros(value) {
for (var i = 0, vLen = value.length; i < vLen; i++) {
if (value[i] === 0) {
continue;
}
return i === 0 ? value : value.slice(i);
}
return new Uint8Array(1);
};
var convert = function convert(numStr) {
var intArr = [];
var _iterator = _createForOfIteratorHelper(numStr),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var c = _step.value;
intArr.push(parseInt(c));
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
return trimLeadingZeros(new Uint8Array(intArr));
};
var withExponent = function withExponent(numStr) {
var _numStr$split = numStr.split('e'),
_numStr$split2 = _slicedToArray(_numStr$split, 2),
nstr = _numStr$split2[0],
e = _numStr$split2[1];
if (typeof e === 'undefined') {
return {
nstr: nstr
};
}
var expN = parseInt(e);
// istanbul ignore next
if (isNaN(expN)) {
return {
nstr: nstr
};
}
return {
nstr: nstr,
expN: expN
};
};
var add = exports.add = function add(adder, addend) {
adder = trimLeadingZeros(adder);
addend = trimLeadingZeros(addend);
var _ref = adder.length < addend.length ? [adder.length, addend] : [addend.length, adder],
_ref2 = _slicedToArray(_ref, 2),
shorterLen = _ref2[0],
longerParam = _ref2[1];
var sum = {
value: 0,
carry: 0
};
var tally = new Array(shorterLen);
for (var i = 1, adderLen = adder.length, addendLen = addend.length; i <= shorterLen; i++) {
sum = addDigit(adder[adderLen - i], addend[addendLen - i], sum.carry);
tally[shorterLen - i] = sum.value;
}
var remainingLen = longerParam.length - shorterLen;
if (!sum.carry) {
tally.unshift.apply(tally, _toConsumableArray(longerParam.slice(0, remainingLen)));
return new Uint8Array(tally);
}
{
var carriedOverSums = [];
for (; remainingLen--;) {
sum = addDigit(longerParam[remainingLen], sum.carry);
carriedOverSums.push(sum.value);
if (!sum.carry) {
break;
}
}
carriedOverSums.length && tally.unshift.apply(tally, _toConsumableArray(carriedOverSums.reverse()));
}
if (sum.carry) {
tally.unshift(sum.carry);
} else if (remainingLen) {
tally.unshift.apply(tally, _toConsumableArray(longerParam.slice(0, remainingLen)));
}
return new Uint8Array(tally);
};
function fromScalar(scalar) {
scalar = "".concat(scalar);
if (scalar === 'null' || scalar === 'undefined') {
return new Uint8Array();
}
if (!STRING_PATTERN.test(scalar)) {
throw new SyntaxError("Expecting a numeric string matching the RegExp pattern: ".concat(STRING_PATTERN.source, " but found ").concat(scalar, " instead."));
}
var _scalar$split = scalar.split('.'),
_scalar$split2 = _toArray(_scalar$split),
num = _scalar$split2[0],
numParts = _scalar$split2.slice(1);
if (typeof numParts[0] === 'undefined') {
var _withExponent = withExponent(num),
_nstr = _withExponent.nstr,
_expN = _withExponent.expN;
return convert(!_expN ? _nstr : "".concat(_nstr).concat('0'.repeat(_expN)));
}
var _withExponent2 = withExponent(numParts[0]),
nstr = _withExponent2.nstr,
expN = _withExponent2.expN;
// istanbul ignore next
if (!expN) {
convert(num);
}
num = "".concat(num).concat(nstr.slice(0, expN));
if (expN <= nstr.length) {
return convert(num);
}
num = "".concat(num).concat('0'.repeat(expN - nstr.length));
return convert(num);
}
;
var subtract = exports.subtract = function subtract(subtractor, subtrahend) {
subtractor = trimLeadingZeros(subtractor);
subtrahend = trimLeadingZeros(subtrahend);
if (subtractor.length < subtrahend.length || subtractor.length === subtrahend.length && subtractor[0] < subtrahend[0]) {
return new Uint8Array(1);
}
var diff = subtractor.slice();
for (var i = 1, subtractorLen = subtractor.length, subtrahendLen = subtrahend.length; i <= subtrahendLen; i++) {
var subtractorIndex = subtractorLen - i;
if (subtractorIndex === 0 && diff[0] < subtrahend[0]) {
return new Uint8Array(1);
}
var digDiff = diff[subtractorIndex] - subtrahend[subtrahendLen - i];
if (digDiff < 0) {
digDiff += BASE;
var isPositive = false;
for (var offset = subtractorIndex; offset--;) {
if (diff[offset] > 0) {
diff[offset] -= 1;
isPositive = true;
break;
}
diff[offset] = 9;
}
// istanbul ignore next
if (!isPositive) {
return new Uint8Array(1);
}
}
diff[subtractorIndex] = digDiff;
}
return trimLeadingZeros(diff);
};
/**
* Attempts to rewrite Uint8Array elements into integer digits
* within MAX_SAFE_INTEGER range or return untouched.
*
* @param uint8
* @returns
*/
var toMyInteger = exports.toMyInteger = function toMyInteger(uint8) {
if (!uint8.length) {
return;
}
uint8 = trimLeadingZeros(uint8);
if (uint8.length > MAX_INT_LENGTH) {
return uint8;
}
var nStr = [];
var _iterator2 = _createForOfIteratorHelper(uint8),
_step2;
try {
for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
var u = _step2.value;
nStr.push("".concat(u));
}
} catch (err) {
_iterator2.e(err);
} finally {
_iterator2.f();
}
var num = parseInt(nStr.join(''));
return num <= Number.MAX_SAFE_INTEGER ? num : uint8;
};