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const Scalar = require("ffjavascript").Scalar; const ZqField = require("ffjavascript").ZqField;
// Prime 0x30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001
const F = new ZqField(Scalar.fromString("21888242871839275222246405745257275088548364400416034343698204186575808495617"));
class SMTMemDb { constructor() { this.nodes = {}; this.root = F.zero; }
async getRoot() { return this.root; }
_key2str(k) { // const keyS = bigInt(key).leInt2Buff(32).toString("hex");
const keyS = k.toString(); return keyS; }
_normalize(n) { for (let i=0; i<n.length; i++) { n[i] = F.e(n[i]); } }
async get(key) { const keyS = this._key2str(key); return this.nodes[keyS]; }
async multiGet(keys) { const promises = []; for (let i=0; i<keys.length; i++) { promises.push(this.get(keys[i])); } return await Promise.all(promises); }
async setRoot(rt) { this.root = rt; }
async multiIns(inserts) { for (let i=0; i<inserts.length; i++) { const keyS = this._key2str(inserts[i][0]); this._normalize(inserts[i][1]); this.nodes[keyS] = inserts[i][1]; } }
async multiDel(dels) { for (let i=0; i<dels.length; i++) { const keyS = this._key2str(dels[i]); delete this.nodes[keyS]; } } }
module.exports = SMTMemDb;
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