First Version SMT

src/smt_memdb.js

@@ -0,0 +1,31 @@
+const bigInt = require("snarkjs").bigInt;
+
+class SMTMemDb {
+    constructor() {
+        this.nodes = {};
+        this.root = bigInt(0);
+    }
+
+    async getRoot() {
+        return this.root;
+    }
+
+    async get(key) {
+        const res = [];
+        const keyS = bigInt(key).leInt2Buff(32).toString("hex");
+        for (let i=0; i<this.nodes[keyS].length; i++) {
+            res.push(bigInt(this.nodes[keyS][i]));
+        }
+        return res;
+    }
+
+    async save(root, inserts) {
+        for (let i=0; i<inserts.length; i++) {
+            const keyS = bigInt(inserts[i][0]).leInt2Buff(32).toString("hex");
+            this.nodes[keyS] = inserts[i][1];
+        }
+        this.root = root;
+    }
+}
+
+module.exports = SMTMemDb;