@orca-so/whirlpool-sdk
Version:
Whirlpool SDK for the Orca protocol.
43 lines (42 loc) • 2.01 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Percentage = void 0;
const spl_token_1 = require("@solana/spl-token");
const decimal_js_1 = __importDefault(require("decimal.js"));
class Percentage {
constructor(numerator, denominator) {
this.toString = () => {
return `${this.numerator.toString()}/${this.denominator.toString()}`;
};
this.numerator = numerator;
this.denominator = denominator;
}
static fromDecimal(number) {
return Percentage.fromFraction(number.toDecimalPlaces(1).mul(10).toNumber(), 1000);
}
static fromFraction(numerator, denominator) {
const num = typeof numerator === "number" ? new spl_token_1.u64(numerator.toString()) : numerator;
const denom = typeof denominator === "number" ? new spl_token_1.u64(denominator.toString()) : denominator;
return new Percentage(num, denom);
}
toDecimal() {
if (this.denominator.eq(new spl_token_1.u64(0))) {
return new decimal_js_1.default(0);
}
return new decimal_js_1.default(this.numerator.toString()).div(new decimal_js_1.default(this.denominator.toString()));
}
add(p2) {
const denomGcd = this.denominator.gcd(p2.denominator);
const denomLcm = this.denominator.div(denomGcd).mul(p2.denominator);
const p1DenomAdjustment = denomLcm.div(this.denominator);
const p2DenomAdjustment = denomLcm.div(p2.denominator);
const p1NumeratorAdjusted = this.numerator.mul(p1DenomAdjustment);
const p2NumeratorAdjusted = p2.numerator.mul(p2DenomAdjustment);
const newNumerator = p1NumeratorAdjusted.add(p2NumeratorAdjusted);
return new Percentage(new spl_token_1.u64(newNumerator.toString()), new spl_token_1.u64(denomLcm.toString()));
}
}
exports.Percentage = Percentage;