@evolutionland/evolution-js/lib/libs/uniswap/utils.js

evolution evolution-js evolutionland evolution-js-sdk evolution-land metaverse

import invariant from "tiny-invariant";
import warning from "tiny-warning";
import JSBI from "jsbi";
import { getAddress } from "@ethersproject/address";
import { ZERO, ONE, TWO, THREE, SolidityType, SOLIDITY_TYPE_MAXIMA } from "./constants";
export function validateSolidityTypeInstance(value, solidityType) {
    invariant(JSBI.greaterThanOrEqual(value, ZERO), `${value} is not a ${solidityType}.`);
    invariant(JSBI.lessThanOrEqual(value, SOLIDITY_TYPE_MAXIMA[solidityType]), `${value} is not a ${solidityType}.`);
}
// warns if addresses are not checksummed
export function validateAndParseAddress(address) {
    try {
        const checksummedAddress = getAddress(address);
        warning(address === checksummedAddress, `${address} is not checksummed.`);
        return checksummedAddress;
    }
    catch (error) {
        invariant(false, `${address} is not a valid address.`);
    }
}
export function parseBigintIsh(bigintIsh) {
    return bigintIsh instanceof JSBI
        ? bigintIsh
        : typeof bigintIsh === "bigint"
            ? JSBI.BigInt(bigintIsh.toString())
            : JSBI.BigInt(bigintIsh);
}
// mock the on-chain sqrt function
export function sqrt(y) {
    validateSolidityTypeInstance(y, SolidityType.uint256);
    let z = ZERO;
    let x;
    if (JSBI.greaterThan(y, THREE)) {
        z = y;
        x = JSBI.add(JSBI.divide(y, TWO), ONE);
        while (JSBI.lessThan(x, z)) {
            z = x;
            x = JSBI.divide(JSBI.add(JSBI.divide(y, x), x), TWO);
        }
    }
    else if (JSBI.notEqual(y, ZERO)) {
        z = ONE;
    }
    return z;
}
// given an array of items sorted by `comparator`, insert an item into its sort index and constrain the size to
// `maxSize` by removing the last item
export function sortedInsert(items, add, maxSize, comparator) {
    invariant(maxSize > 0, "MAX_SIZE_ZERO");
    // this is an invariant because the interface cannot return multiple removed items if items.length exceeds maxSize
    invariant(items.length <= maxSize, "ITEMS_SIZE");
    // short circuit first item add
    if (items.length === 0) {
        items.push(add);
        return null;
    }
    else {
        const isFull = items.length === maxSize;
        // short circuit if full and the additional item does not come before the last item
        if (isFull && comparator(items[items.length - 1], add) <= 0) {
            return add;
        }
        let lo = 0, hi = items.length;
        while (lo < hi) {
            const mid = (lo + hi) >>> 1;
            if (comparator(items[mid], add) <= 0) {
                lo = mid + 1;
            }
            else {
                hi = mid;
            }
        }
        items.splice(lo, 0, add);
        return isFull ? items.pop() : null;
    }
}