@uniswap/smart-order-router
Version:
Uniswap Smart Order Router
73 lines • 6.41 kB
JavaScript
import { Protocol } from '@uniswap/router-sdk';
import { Pair } from '@uniswap/v2-sdk';
import { Pool as V3Pool } from '@uniswap/v3-sdk';
import { Pool as V4Pool } from '@uniswap/v4-sdk';
import { getAddress } from '../../../../util';
/**
* Class defining the route to cache
*
* @export
* @class CachedRoute
*/
export class CachedRoute {
/**
* @param route
* @param percent
*/
constructor({ route, percent }) {
// Hashing function copying the same implementation as Java's `hashCode`
// Sourced from: https://gist.github.com/hyamamoto/fd435505d29ebfa3d9716fd2be8d42f0?permalink_comment_id=4613539#gistcomment-4613539
this.hashCode = (str) => [...str].reduce((s, c) => (Math.imul(31, s) + c.charCodeAt(0)) | 0, 0);
this.route = route;
this.percent = percent;
}
get protocol() {
return this.route.protocol;
}
get currencyIn() {
return this.route.input;
}
get currencyOut() {
return this.route.output;
}
get routePath() {
switch (this.protocol) {
case Protocol.V4:
return this.route.pools
.map((pool) => `[V4]${getAddress(pool.token0)}/${getAddress(pool.token1)}/${pool.fee}/${pool.hooks}/${pool.tickSpacing}`)
.join('->');
case Protocol.V3:
return this.route.pools
.map((pool) => `[V3]${pool.token0.address}/${pool.token1.address}/${pool.fee}`)
.join('->');
case Protocol.V2:
return this.route.pairs
.map((pair) => `[V2]${pair.token0.address}/${pair.token1.address}`)
.join('->');
case Protocol.MIXED:
return this.route.pools
.map((pool) => {
if (pool instanceof V4Pool) {
// TODO: ROUTE-217 - Support native currency routing in V4
return `[V4]${getAddress(pool.token0)}/${getAddress(pool.token1)}/${pool.fee}/${pool.hooks}/${pool.tickSpacing}`;
}
else if (pool instanceof V3Pool) {
return `[V3]${pool.token0.address}/${pool.token1.address}/${pool.fee}`;
}
else if (pool instanceof Pair) {
return `[V2]${pool.token0.address}/${pool.token1.address}`;
}
else {
throw new Error(`Unsupported pool type ${JSON.stringify(pool)}`);
}
})
.join('->');
default:
throw new Error(`Unsupported protocol ${this.protocol}`);
}
}
get routeId() {
return this.hashCode(this.routePath);
}
}
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