feat!: tree leaf value as Fr everywhere in our public API

yarn-project/acir-simulator/src/client/view_data_oracle.ts

@@ -143,9 +143,8 @@ export class ViewDataOracle extends TypedOracle {
         throw new Error(`Oracle storage read undefined: slot=${storageSlot.toString(16)}`);
       }
 
-      const frValue = Fr.fromBuffer(value);
-      this.log(`Oracle storage read: slot=${storageSlot.toString(16)} value=${frValue}`);
-      values.push(frValue);
+      this.log(`Oracle storage read: slot=${storageSlot.toString(16)} value=${value}`);
+      values.push(value);
     }
     return values;
   }

yarn-project/acir-simulator/src/public/index.test.ts

@@ -11,7 +11,6 @@ import { FunctionArtifact, FunctionSelector, encodeArguments } from '@aztec/foun
 import { AztecAddress } from '@aztec/foundation/aztec-address';
 import { EthAddress } from '@aztec/foundation/eth-address';
 import { Fr } from '@aztec/foundation/fields';
-import { toBigInt } from '@aztec/foundation/serialize';
 import {
   ChildContractArtifact,
   ParentContractArtifact,
@@ -240,8 +239,8 @@ describe('ACIR public execution simulator', () => {
 
         const functionData = new FunctionData(parentEntryPointFnSelector, isInternal ?? false, false, false);
         const args = encodeArguments(parentEntryPointFn, [
-          childContractAddress.toField().value,
-          toBigInt(childValueFnSelector.toBuffer()),
+          childContractAddress.toField(),
+          childValueFnSelector.toField(),
           initialValue,
         ]);
 

yarn-project/aztec-node/src/aztec-node/server.ts

@@ -291,9 +291,9 @@ export class AztecNodeService implements AztecNode {
    * @param leafValue - The value to search for
    * @returns The index of the given leaf in the given tree or undefined if not found.
    */
-  public async findLeafIndex(treeId: MerkleTreeId, leafValue: Buffer): Promise<bigint | undefined> {
+  public async findLeafIndex(treeId: MerkleTreeId, leafValue: Fr): Promise<bigint | undefined> {
     const committedDb = await this.#getWorldState();
-    return committedDb.findLeafIndex(treeId, leafValue);
+    return committedDb.findLeafIndex(treeId, leafValue.toBuffer());
   }
 
   /**
@@ -324,7 +324,7 @@ export class AztecNodeService implements AztecNode {
    */
   public async getL1ToL2MessageAndIndex(messageKey: Fr): Promise<L1ToL2MessageAndIndex> {
     // todo: #697 - make this one lookup.
-    const index = (await this.findLeafIndex(MerkleTreeId.L1_TO_L2_MESSAGES_TREE, messageKey.toBuffer()))!;
+    const index = (await this.findLeafIndex(MerkleTreeId.L1_TO_L2_MESSAGES_TREE, messageKey))!;
     const message = await this.l1ToL2MessageSource.getConfirmedL1ToL2Message(messageKey);
     return Promise.resolve(new L1ToL2MessageAndIndex(index, message));
   }
@@ -346,10 +346,11 @@ export class AztecNodeService implements AztecNode {
    * @returns Storage value at the given contract slot (or undefined if not found).
    * Note: Aztec's version of `eth_getStorageAt`.
    */
-  public async getPublicStorageAt(contract: AztecAddress, slot: bigint): Promise<Buffer | undefined> {
+  public async getPublicStorageAt(contract: AztecAddress, slot: bigint): Promise<Fr | undefined> {
     const committedDb = await this.#getWorldState();
     const leafIndex = computePublicDataTreeIndex(await CircuitsWasm.get(), contract, new Fr(slot));
-    return committedDb.getLeafValue(MerkleTreeId.PUBLIC_DATA_TREE, leafIndex.value);
+    const value = await committedDb.getLeafValue(MerkleTreeId.PUBLIC_DATA_TREE, leafIndex.value);
+    return value ? Fr.fromBuffer(value) : undefined;
   }
 
   /**

yarn-project/aztec.js/src/utils/cheat_codes.ts

@@ -277,7 +277,7 @@ export class AztecCheatCodes {
     if (storageValue === undefined) {
       throw new Error(`Storage slot ${slot} not found`);
     }
-    return Fr.fromBuffer(storageValue);
+    return storageValue;
   }
 
   /**

yarn-project/end-to-end/src/e2e_2_pxes.test.ts

@@ -1,7 +1,6 @@
 import { AztecAddress, Note, Wallet, computeMessageSecretHash } from '@aztec/aztec.js';
 import { DebugLogger } from '@aztec/foundation/log';
 import { retryUntil } from '@aztec/foundation/retry';
-import { toBigInt } from '@aztec/foundation/serialize';
 import { ChildContract, TokenContract } from '@aztec/noir-contracts/types';
 import { EthAddress, Fr, PXEService } from '@aztec/pxe';
 import { AztecNode, CompleteAddress, ExtendedNote, PXE, TxStatus } from '@aztec/types';
@@ -175,7 +174,7 @@ describe('e2e_2_pxes', () => {
   };
 
   const getChildStoredValue = (child: { address: AztecAddress }, pxe: PXE) =>
-    pxe.getPublicStorageAt(child.address, new Fr(1)).then(x => toBigInt(x!));
+    pxe.getPublicStorageAt(child.address, new Fr(1));
 
   it('user calls a public function on a contract deployed by a different user using a different PXE', async () => {
     const childCompleteAddress = await deployChildContractViaServerA();
@@ -191,15 +190,15 @@ describe('e2e_2_pxes', () => {
       },
     ]);
 
-    const newValueToSet = 256n;
+    const newValueToSet = new Fr(256n);
 
     const childContractWithWalletB = await ChildContract.at(childCompleteAddress.address, walletB);
     await childContractWithWalletB.methods.pubIncValue(newValueToSet).send().wait({ interval: 0.1 });
 
     await awaitServerSynchronized(pxeA);
 
     const storedValue = await getChildStoredValue(childCompleteAddress, pxeB);
-    expect(storedValue).toBe(newValueToSet);
+    expect(storedValue).toEqual(newValueToSet);
   });
 
   it('private state is "zero" when Private eXecution Environment (PXE) does not have the account private key', async () => {

yarn-project/end-to-end/src/e2e_account_contracts.test.ts

@@ -9,7 +9,6 @@ import {
   Wallet,
 } from '@aztec/aztec.js';
 import { CompleteAddress, GrumpkinPrivateKey, GrumpkinScalar } from '@aztec/circuits.js';
-import { toBigInt } from '@aztec/foundation/serialize';
 import { ChildContract } from '@aztec/noir-contracts/types';
 
 import { randomBytes } from 'crypto';
@@ -56,7 +55,8 @@ function itShouldBehaveLikeAnAccountContract(
       const { logger, pxe } = context;
       logger('Calling public function...');
       await child.methods.pubIncValue(42).send().wait({ interval: 0.1 });
-      expect(toBigInt((await pxe.getPublicStorageAt(child.address, new Fr(1)))!)).toEqual(42n);
+      const storedValue = await pxe.getPublicStorageAt(child.address, new Fr(1));
+      expect(storedValue!).toEqual(new Fr(42n));
     }, 60_000);
 
     it('fails to call a function using an invalid signature', async () => {

yarn-project/end-to-end/src/e2e_nested_contract.test.ts

@@ -1,7 +1,6 @@
 import { AztecAddress, BatchCall, Fr, Wallet } from '@aztec/aztec.js';
 import { toBigIntBE } from '@aztec/foundation/bigint-buffer';
 import { DebugLogger } from '@aztec/foundation/log';
-import { toBigInt } from '@aztec/foundation/serialize';
 import { ChildContract, ImportTestContract, ParentContract, TestContract } from '@aztec/noir-contracts/types';
 import { PXE } from '@aztec/types';
 
@@ -28,8 +27,7 @@ describe('e2e_nested_contract', () => {
       childContract = await ChildContract.deploy(wallet).send().deployed();
     }, 100_000);
 
-    const getChildStoredValue = (child: { address: AztecAddress }) =>
-      pxe.getPublicStorageAt(child.address, new Fr(1)).then(x => toBigInt(x!));
+    const getChildStoredValue = (child: { address: AztecAddress }) => pxe.getPublicStorageAt(child.address, new Fr(1));
 
     it('performs nested calls', async () => {
       await parentContract.methods
@@ -58,7 +56,7 @@ describe('e2e_nested_contract', () => {
         .enqueueCallToChild(childContract.address, childContract.methods.pubIncValue.selector.toField(), 42n)
         .send()
         .wait();
-      expect(await getChildStoredValue(childContract)).toEqual(42n);
+      expect(await getChildStoredValue(childContract)).toEqual(new Fr(42n));
     }, 100_000);
 
     it('fails simulation if calling a public function not allowed to be called externally', async () => {
@@ -74,23 +72,23 @@ describe('e2e_nested_contract', () => {
         .enqueueCallToChildTwice(childContract.address, childContract.methods.pubIncValue.selector.value, 42n)
         .send()
         .wait();
-      expect(await getChildStoredValue(childContract)).toEqual(85n);
+      expect(await getChildStoredValue(childContract)).toEqual(new Fr(85n));
     }, 100_000);
 
     it('enqueues a public call with nested public calls', async () => {
       await parentContract.methods
         .enqueueCallToPubEntryPoint(childContract.address, childContract.methods.pubIncValue.selector.toField(), 42n)
         .send()
         .wait();
-      expect(await getChildStoredValue(childContract)).toEqual(42n);
+      expect(await getChildStoredValue(childContract)).toEqual(new Fr(42n));
     }, 100_000);
 
     it('enqueues multiple public calls with nested public calls', async () => {
       await parentContract.methods
         .enqueueCallsToPubEntryPoint(childContract.address, childContract.methods.pubIncValue.selector.toField(), 42n)
         .send()
         .wait();
-      expect(await getChildStoredValue(childContract)).toEqual(85n);
+      expect(await getChildStoredValue(childContract)).toEqual(new Fr(85n));
     }, 100_000);
 
     // Regression for https://github.com/AztecProtocol/aztec-packages/issues/640
@@ -99,7 +97,7 @@ describe('e2e_nested_contract', () => {
         .pubEntryPointTwice(childContract.address, childContract.methods.pubIncValue.selector.value, 42n)
         .send()
         .wait();
-      expect(await getChildStoredValue(childContract)).toEqual(84n);
+      expect(await getChildStoredValue(childContract)).toEqual(new Fr(84n));
     }, 100_000);
 
     // Regression for https://github.com/AztecProtocol/aztec-packages/issues/1645
@@ -121,7 +119,7 @@ describe('e2e_nested_contract', () => {
       ).logs;
       const processedLogs = extendedLogs.map(extendedLog => toBigIntBE(extendedLog.log.data));
       expect(processedLogs).toEqual([20n, 40n]);
-      expect(await getChildStoredValue(childContract)).toEqual(40n);
+      expect(await getChildStoredValue(childContract)).toEqual(new Fr(40n));
     });
   });
 

yarn-project/end-to-end/src/e2e_ordering.test.ts

@@ -3,7 +3,6 @@ import { Wallet } from '@aztec/aztec.js';
 import { FunctionSelector } from '@aztec/circuits.js';
 import { toBigIntBE } from '@aztec/foundation/bigint-buffer';
 import { Fr } from '@aztec/foundation/fields';
-import { toBigInt } from '@aztec/foundation/serialize';
 import { ChildContract, ParentContract } from '@aztec/noir-contracts/types';
 import { PXE, TxStatus } from '@aztec/types';
 
@@ -80,8 +79,8 @@ describe('e2e_ordering', () => {
           await expectLogsFromLastBlockToBe(expectedOrder);
 
           // The final value of the child is the last one set
-          const value = await pxe.getPublicStorageAt(child.address, new Fr(1)).then(x => toBigInt(x!));
-          expect(value).toEqual(expectedOrder[1]); // final state should match last value set
+          const value = await pxe.getPublicStorageAt(child.address, new Fr(1));
+          expect(value?.value).toBe(expectedOrder[1]); // final state should match last value set
         },
       );
     });
@@ -104,8 +103,8 @@ describe('e2e_ordering', () => {
           const receipt = await tx.wait();
           expect(receipt.status).toBe(TxStatus.MINED);
 
-          const value = await pxe.getPublicStorageAt(child.address, new Fr(1)).then(x => toBigInt(x!));
-          expect(value).toEqual(expectedOrder[1]); // final state should match last value set
+          const value = await pxe.getPublicStorageAt(child.address, new Fr(1));
+          expect(value?.value).toBe(expectedOrder[1]); // final state should match last value set
         },
       );
 

yarn-project/end-to-end/src/guides/dapp_testing.test.ts

@@ -11,7 +11,6 @@ import {
   getSandboxAccountsWallets,
   waitForSandbox,
 } from '@aztec/aztec.js';
-import { toBigIntBE } from '@aztec/foundation/bigint-buffer';
 import { TestContract, TokenContract } from '@aztec/noir-contracts/types';
 import { ExtendedNote } from '@aztec/types';
 
@@ -166,7 +165,7 @@ describe('guides/dapp/testing', () => {
         await token.methods.mint_public(owner.getAddress(), 100n).send().wait();
         const ownerPublicBalanceSlot = cheats.aztec.computeSlotInMap(6n, owner.getAddress());
         const balance = await pxe.getPublicStorageAt(token.address, ownerPublicBalanceSlot);
-        expect(toBigIntBE(balance!)).toEqual(100n);
+        expect(balance!.value).toEqual(100n);
         // docs:end:public-storage
       });
 

yarn-project/pxe/src/contract_tree/index.ts

@@ -229,10 +229,7 @@ export class ContractTree {
       const root = await this.getFunctionTreeRoot();
       const newContractData = new NewContractData(completeAddress.address, portalContract, root);
       const commitment = computeContractLeaf(this.wasm, newContractData);
-      this.contractIndex = await this.stateInfoProvider.findLeafIndex(
-        MerkleTreeId.CONTRACT_TREE,
-        commitment.toBuffer(),
-      );
+      this.contractIndex = await this.stateInfoProvider.findLeafIndex(MerkleTreeId.CONTRACT_TREE, commitment);
       if (this.contractIndex === undefined) {
         throw new Error(
           `Failed to find contract at ${completeAddress.address} with portal ${portalContract} resulting in commitment ${commitment}.`,

yarn-project/pxe/src/pxe_service/pxe_service.ts

@@ -232,14 +232,14 @@ export class PXEService implements PXE {
     // TODO(https://github.com/AztecProtocol/aztec-packages/issues/1386)
     // This can always be `uniqueSiloedNoteHash` once notes added from public also include nonces.
     const noteHashToLookUp = nonce.isZero() ? siloedNoteHash : uniqueSiloedNoteHash;
-    const index = await this.node.findLeafIndex(MerkleTreeId.NOTE_HASH_TREE, noteHashToLookUp.toBuffer());
+    const index = await this.node.findLeafIndex(MerkleTreeId.NOTE_HASH_TREE, noteHashToLookUp);
     if (index === undefined) {
       throw new Error('Note does not exist.');
     }
 
     const wasm = await CircuitsWasm.get();
     const siloedNullifier = siloNullifier(wasm, note.contractAddress, innerNullifier!);
-    const nullifierIndex = await this.node.findLeafIndex(MerkleTreeId.NULLIFIER_TREE, siloedNullifier.toBuffer());
+    const nullifierIndex = await this.node.findLeafIndex(MerkleTreeId.NULLIFIER_TREE, siloedNullifier);
     if (nullifierIndex !== undefined) {
       throw new Error('The note has been destroyed.');
     }

yarn-project/pxe/src/simulator_oracle/index.ts

@@ -116,11 +116,11 @@ export class SimulatorOracle implements DBOracle {
    * @returns - The index of the commitment. Undefined if it does not exist in the tree.
    */
   async getCommitmentIndex(commitment: Fr) {
-    return await this.stateInfoProvider.findLeafIndex(MerkleTreeId.NOTE_HASH_TREE, commitment.toBuffer());
+    return await this.stateInfoProvider.findLeafIndex(MerkleTreeId.NOTE_HASH_TREE, commitment);
   }
 
   async getNullifierIndex(nullifier: Fr) {
-    return await this.stateInfoProvider.findLeafIndex(MerkleTreeId.NULLIFIER_TREE, nullifier.toBuffer());
+    return await this.stateInfoProvider.findLeafIndex(MerkleTreeId.NULLIFIER_TREE, nullifier);
   }
 
   /**

yarn-project/types/src/interfaces/aztec-node.ts

@@ -132,7 +132,7 @@ export interface AztecNode extends StateInfoProvider {
    * @param slot - Slot to query.
    * @returns Storage value at the given contract slot (or undefined if not found).
    */
-  getPublicStorageAt(contract: AztecAddress, slot: bigint): Promise<Buffer | undefined>;
+  getPublicStorageAt(contract: AztecAddress, slot: bigint): Promise<Fr | undefined>;
 
   /**
    * Returns the current committed roots for the data trees.

yarn-project/types/src/interfaces/pxe.ts

@@ -158,7 +158,7 @@ export interface PXE {
    * @returns A buffer containing the public storage data at the storage slot.
    * @throws If the contract is not deployed.
    */
-  getPublicStorageAt(contract: AztecAddress, storageSlot: Fr): Promise<Buffer | undefined>;
+  getPublicStorageAt(contract: AztecAddress, storageSlot: Fr): Promise<Fr | undefined>;
 
   /**
    * Gets notes of accounts registered in this PXE based on the provided filter.

yarn-project/types/src/interfaces/state_provider.ts

@@ -14,7 +14,7 @@ export interface StateInfoProvider {
    * @param leafValue - The value to search for
    * @returns The index of the given leaf in the given tree or undefined if not found.
    */
-  findLeafIndex(treeId: MerkleTreeId, leafValue: Buffer): Promise<bigint | undefined>;
+  findLeafIndex(treeId: MerkleTreeId, leafValue: Fr): Promise<bigint | undefined>;
 
   /**
    * Returns the sibling path for the given index in the contract tree.