saepenatus
Version:
Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern javascript UI with code splitting, CSS customization, mul
371 lines • 14.4 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.FixedNumber = exports.FixedFormat = exports.parseFixed = exports.formatFixed = void 0;
var bytes_1 = require("@ethersproject/bytes");
var logger_1 = require("@ethersproject/logger");
var _version_1 = require("./_version");
var logger = new logger_1.Logger(_version_1.version);
var bignumber_1 = require("./bignumber");
var _constructorGuard = {};
var Zero = bignumber_1.BigNumber.from(0);
var NegativeOne = bignumber_1.BigNumber.from(-1);
function throwFault(message, fault, operation, value) {
var params = { fault: fault, operation: operation };
if (value !== undefined) {
params.value = value;
}
return logger.throwError(message, logger_1.Logger.errors.NUMERIC_FAULT, params);
}
// Constant to pull zeros from for multipliers
var zeros = "0";
while (zeros.length < 256) {
zeros += zeros;
}
// Returns a string "1" followed by decimal "0"s
function getMultiplier(decimals) {
if (typeof (decimals) !== "number") {
try {
decimals = bignumber_1.BigNumber.from(decimals).toNumber();
}
catch (e) { }
}
if (typeof (decimals) === "number" && decimals >= 0 && decimals <= 256 && !(decimals % 1)) {
return ("1" + zeros.substring(0, decimals));
}
return logger.throwArgumentError("invalid decimal size", "decimals", decimals);
}
function formatFixed(value, decimals) {
if (decimals == null) {
decimals = 0;
}
var multiplier = getMultiplier(decimals);
// Make sure wei is a big number (convert as necessary)
value = bignumber_1.BigNumber.from(value);
var negative = value.lt(Zero);
if (negative) {
value = value.mul(NegativeOne);
}
var fraction = value.mod(multiplier).toString();
while (fraction.length < multiplier.length - 1) {
fraction = "0" + fraction;
}
// Strip training 0
fraction = fraction.match(/^([0-9]*[1-9]|0)(0*)/)[1];
var whole = value.div(multiplier).toString();
if (multiplier.length === 1) {
value = whole;
}
else {
value = whole + "." + fraction;
}
if (negative) {
value = "-" + value;
}
return value;
}
exports.formatFixed = formatFixed;
function parseFixed(value, decimals) {
if (decimals == null) {
decimals = 0;
}
var multiplier = getMultiplier(decimals);
if (typeof (value) !== "string" || !value.match(/^-?[0-9.]+$/)) {
logger.throwArgumentError("invalid decimal value", "value", value);
}
// Is it negative?
var negative = (value.substring(0, 1) === "-");
if (negative) {
value = value.substring(1);
}
if (value === ".") {
logger.throwArgumentError("missing value", "value", value);
}
// Split it into a whole and fractional part
var comps = value.split(".");
if (comps.length > 2) {
logger.throwArgumentError("too many decimal points", "value", value);
}
var whole = comps[0], fraction = comps[1];
if (!whole) {
whole = "0";
}
if (!fraction) {
fraction = "0";
}
// Trim trailing zeros
while (fraction[fraction.length - 1] === "0") {
fraction = fraction.substring(0, fraction.length - 1);
}
// Check the fraction doesn't exceed our decimals size
if (fraction.length > multiplier.length - 1) {
throwFault("fractional component exceeds decimals", "underflow", "parseFixed");
}
// If decimals is 0, we have an empty string for fraction
if (fraction === "") {
fraction = "0";
}
// Fully pad the string with zeros to get to wei
while (fraction.length < multiplier.length - 1) {
fraction += "0";
}
var wholeValue = bignumber_1.BigNumber.from(whole);
var fractionValue = bignumber_1.BigNumber.from(fraction);
var wei = (wholeValue.mul(multiplier)).add(fractionValue);
if (negative) {
wei = wei.mul(NegativeOne);
}
return wei;
}
exports.parseFixed = parseFixed;
var FixedFormat = /** @class */ (function () {
function FixedFormat(constructorGuard, signed, width, decimals) {
if (constructorGuard !== _constructorGuard) {
logger.throwError("cannot use FixedFormat constructor; use FixedFormat.from", logger_1.Logger.errors.UNSUPPORTED_OPERATION, {
operation: "new FixedFormat"
});
}
this.signed = signed;
this.width = width;
this.decimals = decimals;
this.name = (signed ? "" : "u") + "fixed" + String(width) + "x" + String(decimals);
this._multiplier = getMultiplier(decimals);
Object.freeze(this);
}
FixedFormat.from = function (value) {
if (value instanceof FixedFormat) {
return value;
}
if (typeof (value) === "number") {
value = "fixed128x" + value;
}
var signed = true;
var width = 128;
var decimals = 18;
if (typeof (value) === "string") {
if (value === "fixed") {
// defaults...
}
else if (value === "ufixed") {
signed = false;
}
else {
var match = value.match(/^(u?)fixed([0-9]+)x([0-9]+)$/);
if (!match) {
logger.throwArgumentError("invalid fixed format", "format", value);
}
signed = (match[1] !== "u");
width = parseInt(match[2]);
decimals = parseInt(match[3]);
}
}
else if (value) {
var check = function (key, type, defaultValue) {
if (value[key] == null) {
return defaultValue;
}
if (typeof (value[key]) !== type) {
logger.throwArgumentError("invalid fixed format (" + key + " not " + type + ")", "format." + key, value[key]);
}
return value[key];
};
signed = check("signed", "boolean", signed);
width = check("width", "number", width);
decimals = check("decimals", "number", decimals);
}
if (width % 8) {
logger.throwArgumentError("invalid fixed format width (not byte aligned)", "format.width", width);
}
if (decimals > 80) {
logger.throwArgumentError("invalid fixed format (decimals too large)", "format.decimals", decimals);
}
return new FixedFormat(_constructorGuard, signed, width, decimals);
};
return FixedFormat;
}());
exports.FixedFormat = FixedFormat;
var FixedNumber = /** @class */ (function () {
function FixedNumber(constructorGuard, hex, value, format) {
var _newTarget = this.constructor;
logger.checkNew(_newTarget, FixedNumber);
if (constructorGuard !== _constructorGuard) {
logger.throwError("cannot use FixedNumber constructor; use FixedNumber.from", logger_1.Logger.errors.UNSUPPORTED_OPERATION, {
operation: "new FixedFormat"
});
}
this.format = format;
this._hex = hex;
this._value = value;
this._isFixedNumber = true;
Object.freeze(this);
}
FixedNumber.prototype._checkFormat = function (other) {
if (this.format.name !== other.format.name) {
logger.throwArgumentError("incompatible format; use fixedNumber.toFormat", "other", other);
}
};
FixedNumber.prototype.addUnsafe = function (other) {
this._checkFormat(other);
var a = parseFixed(this._value, this.format.decimals);
var b = parseFixed(other._value, other.format.decimals);
return FixedNumber.fromValue(a.add(b), this.format.decimals, this.format);
};
FixedNumber.prototype.subUnsafe = function (other) {
this._checkFormat(other);
var a = parseFixed(this._value, this.format.decimals);
var b = parseFixed(other._value, other.format.decimals);
return FixedNumber.fromValue(a.sub(b), this.format.decimals, this.format);
};
FixedNumber.prototype.mulUnsafe = function (other) {
this._checkFormat(other);
var a = parseFixed(this._value, this.format.decimals);
var b = parseFixed(other._value, other.format.decimals);
return FixedNumber.fromValue(a.mul(b).div(this.format._multiplier), this.format.decimals, this.format);
};
FixedNumber.prototype.divUnsafe = function (other) {
this._checkFormat(other);
var a = parseFixed(this._value, this.format.decimals);
var b = parseFixed(other._value, other.format.decimals);
return FixedNumber.fromValue(a.mul(this.format._multiplier).div(b), this.format.decimals, this.format);
};
FixedNumber.prototype.floor = function () {
var comps = this.toString().split(".");
if (comps.length === 1) {
comps.push("0");
}
var result = FixedNumber.from(comps[0], this.format);
var hasFraction = !comps[1].match(/^(0*)$/);
if (this.isNegative() && hasFraction) {
result = result.subUnsafe(ONE.toFormat(result.format));
}
return result;
};
FixedNumber.prototype.ceiling = function () {
var comps = this.toString().split(".");
if (comps.length === 1) {
comps.push("0");
}
var result = FixedNumber.from(comps[0], this.format);
var hasFraction = !comps[1].match(/^(0*)$/);
if (!this.isNegative() && hasFraction) {
result = result.addUnsafe(ONE.toFormat(result.format));
}
return result;
};
// @TODO: Support other rounding algorithms
FixedNumber.prototype.round = function (decimals) {
if (decimals == null) {
decimals = 0;
}
// If we are already in range, we're done
var comps = this.toString().split(".");
if (comps.length === 1) {
comps.push("0");
}
if (decimals < 0 || decimals > 80 || (decimals % 1)) {
logger.throwArgumentError("invalid decimal count", "decimals", decimals);
}
if (comps[1].length <= decimals) {
return this;
}
var factor = FixedNumber.from("1" + zeros.substring(0, decimals), this.format);
var bump = BUMP.toFormat(this.format);
return this.mulUnsafe(factor).addUnsafe(bump).floor().divUnsafe(factor);
};
FixedNumber.prototype.isZero = function () {
return (this._value === "0.0" || this._value === "0");
};
FixedNumber.prototype.isNegative = function () {
return (this._value[0] === "-");
};
FixedNumber.prototype.toString = function () { return this._value; };
FixedNumber.prototype.toHexString = function (width) {
if (width == null) {
return this._hex;
}
if (width % 8) {
logger.throwArgumentError("invalid byte width", "width", width);
}
var hex = bignumber_1.BigNumber.from(this._hex).fromTwos(this.format.width).toTwos(width).toHexString();
return (0, bytes_1.hexZeroPad)(hex, width / 8);
};
FixedNumber.prototype.toUnsafeFloat = function () { return parseFloat(this.toString()); };
FixedNumber.prototype.toFormat = function (format) {
return FixedNumber.fromString(this._value, format);
};
FixedNumber.fromValue = function (value, decimals, format) {
// If decimals looks more like a format, and there is no format, shift the parameters
if (format == null && decimals != null && !(0, bignumber_1.isBigNumberish)(decimals)) {
format = decimals;
decimals = null;
}
if (decimals == null) {
decimals = 0;
}
if (format == null) {
format = "fixed";
}
return FixedNumber.fromString(formatFixed(value, decimals), FixedFormat.from(format));
};
FixedNumber.fromString = function (value, format) {
if (format == null) {
format = "fixed";
}
var fixedFormat = FixedFormat.from(format);
var numeric = parseFixed(value, fixedFormat.decimals);
if (!fixedFormat.signed && numeric.lt(Zero)) {
throwFault("unsigned value cannot be negative", "overflow", "value", value);
}
var hex = null;
if (fixedFormat.signed) {
hex = numeric.toTwos(fixedFormat.width).toHexString();
}
else {
hex = numeric.toHexString();
hex = (0, bytes_1.hexZeroPad)(hex, fixedFormat.width / 8);
}
var decimal = formatFixed(numeric, fixedFormat.decimals);
return new FixedNumber(_constructorGuard, hex, decimal, fixedFormat);
};
FixedNumber.fromBytes = function (value, format) {
if (format == null) {
format = "fixed";
}
var fixedFormat = FixedFormat.from(format);
if ((0, bytes_1.arrayify)(value).length > fixedFormat.width / 8) {
throw new Error("overflow");
}
var numeric = bignumber_1.BigNumber.from(value);
if (fixedFormat.signed) {
numeric = numeric.fromTwos(fixedFormat.width);
}
var hex = numeric.toTwos((fixedFormat.signed ? 0 : 1) + fixedFormat.width).toHexString();
var decimal = formatFixed(numeric, fixedFormat.decimals);
return new FixedNumber(_constructorGuard, hex, decimal, fixedFormat);
};
FixedNumber.from = function (value, format) {
if (typeof (value) === "string") {
return FixedNumber.fromString(value, format);
}
if ((0, bytes_1.isBytes)(value)) {
return FixedNumber.fromBytes(value, format);
}
try {
return FixedNumber.fromValue(value, 0, format);
}
catch (error) {
// Allow NUMERIC_FAULT to bubble up
if (error.code !== logger_1.Logger.errors.INVALID_ARGUMENT) {
throw error;
}
}
return logger.throwArgumentError("invalid FixedNumber value", "value", value);
};
FixedNumber.isFixedNumber = function (value) {
return !!(value && value._isFixedNumber);
};
return FixedNumber;
}());
exports.FixedNumber = FixedNumber;
var ONE = FixedNumber.from(1);
var BUMP = FixedNumber.from("0.5");
//# sourceMappingURL=fixednumber.js.map