@kstasi/jest-tolk/dist/int-tree.js

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"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.createIntTree = createIntTree;
function createIntTree(start, bits, signed, fixed = false) {
    const max = signed
        ? (BigInt(1) << BigInt(bits - 1)) - BigInt(1)
        : (BigInt(1) << BigInt(bits)) - BigInt(1);
    const min = signed ? -(BigInt(1) << BigInt(bits - 1)) : BigInt(0);
    let lo = 0n;
    let hi = start;
    let curr = start;
    function magnitudeGreater(lhs, rhs) {
        if (lhs === BigInt(0)) {
            return false;
        }
        return lhs > rhs !== lhs < BigInt(0);
    }
    function reposition() {
        const interval = hi - lo;
        const newMid = lo + interval / BigInt(2);
        if (newMid === curr) {
            return false;
        }
        curr = newMid;
        return true;
    }
    function current() {
        return curr;
    }
    function simplify() {
        if (fixed || !magnitudeGreater(hi, lo)) {
            return false;
        }
        hi = curr;
        return reposition();
    }
    function complicate() {
        if (fixed || !magnitudeGreater(hi, lo)) {
            return false;
        }
        lo =
            curr !== min && curr !== max
                ? curr + (hi < BigInt(0) ? BigInt(-1) : BigInt(1))
                : curr;
        return reposition();
    }
    return { current, simplify, complicate };
}