feat(world-modules): add ERC20 module

.changeset/silent-buttons-peel.md

@@ -0,0 +1,20 @@
+---
+"@latticexyz/world-modules": minor
+---
+
+Added the `ERC20Module` to `@latticexyz/world-modules`.
+This module allows the registration of `ERC20` tokens in an existing World.
+
+Important note: this module has not been audited yet, so any production use is discouraged for now.
+
+```solidity
+import { PuppetModule } from "@latticexyz/world-modules/src/modules/puppet/PuppetModule.sol";
+import { IERC20Mintable } from "@latticexyz/world-modules/src/modules/erc20-puppet/IERC20Mintable.sol";
+import { registerERC20 } from "@latticexyz/world-modules/src/modules/erc20-puppet/registerERC20.sol";
+
+// The ERC20 module requires the Puppet module to be installed first
+world.installModule(new PuppetModule(), new bytes(0));
+
+// After the Puppet module is installed, new ERC20 tokens can be registered
+IERC20Mintable token = registerERC20(world, "myERC20", ERC20MetadataData({ decimals: 18, name: "Token", symbol: "TKN" }));
+```

packages/world-modules/gas-report.json

@@ -1,4 +1,34 @@
 [
+  {
+    "file": "test/ERC20.t.sol",
+    "test": "testApprove",
+    "name": "approve",
+    "gasUsed": 114329
+  },
+  {
+    "file": "test/ERC20.t.sol",
+    "test": "testBurn",
+    "name": "burn",
+    "gasUsed": 75866
+  },
+  {
+    "file": "test/ERC20.t.sol",
+    "test": "testMint",
+    "name": "mint",
+    "gasUsed": 161705
+  },
+  {
+    "file": "test/ERC20.t.sol",
+    "test": "testTransfer",
+    "name": "transfer",
+    "gasUsed": 92948
+  },
+  {
+    "file": "test/ERC20.t.sol",
+    "test": "testTransferFrom",
+    "name": "transferFrom",
+    "gasUsed": 130250
+  },
   {
     "file": "test/KeysInTableModule.t.sol",
     "test": "testInstallComposite",

packages/world-modules/mud.config.ts

@@ -105,7 +105,61 @@ export default mudConfig({
       },
       tableIdArgument: true,
     },
+    /************************************************************************
+     *
+     *    ERC20 MODULE
+     *
+     ************************************************************************/
+    Balances: {
+      directory: "modules/erc20-puppet/tables",
+      keySchema: {
+        account: "address",
+      },
+      valueSchema: {
+        value: "uint256",
+      },
+      tableIdArgument: true,
+    },
+    Allowances: {
+      directory: "modules/erc20-puppet/tables",
+      keySchema: {
+        account: "address",
+        spender: "address",
+      },
+      valueSchema: {
+        value: "uint256",
+      },
+      tableIdArgument: true,
+    },
+    TotalSupply: {
+      directory: "modules/erc20-puppet/tables",
+      keySchema: {},
+      valueSchema: {
+        totalSupply: "uint256",
+      },
+      tableIdArgument: true,
+    },
+    Metadata: {
+      directory: "modules/erc20-puppet/tables",
+      keySchema: {},
+      valueSchema: {
+        decimals: "uint8",
+        name: "string",
+        symbol: "string",
+      },
+      tableIdArgument: true,
+    },
+    ERC20Registry: {
+      directory: "modules/erc20-puppet/tables",
+      keySchema: {
+        namespaceId: "ResourceId",
+      },
+      valueSchema: {
+        erc20Address: "address",
+      },
+      tableIdArgument: true,
+    },
   },
 
-  excludeSystems: ["UniqueEntitySystem", "PuppetFactorySystem"],
+  excludeSystems: ["UniqueEntitySystem", "PuppetFactorySystem", "ERC20System"],
 });

packages/world-modules/remappings.txt

@@ -1,3 +1,3 @@
 ds-test/=node_modules/ds-test/src/
 forge-std/=node_modules/forge-std/src/
-@latticexyz/=node_modules/@latticexyz/
+@latticexyz/=node_modules/@latticexyz/

packages/world-modules/src/index.sol

@@ -10,3 +10,8 @@ import { UniqueEntity } from "./modules/uniqueentity/tables/UniqueEntity.sol";
 import { CallboundDelegations, CallboundDelegationsTableId } from "./modules/std-delegations/tables/CallboundDelegations.sol";
 import { TimeboundDelegations, TimeboundDelegationsTableId } from "./modules/std-delegations/tables/TimeboundDelegations.sol";
 import { PuppetRegistry } from "./modules/puppet/tables/PuppetRegistry.sol";
+import { Balances } from "./modules/erc20-puppet/tables/Balances.sol";
+import { Allowances } from "./modules/erc20-puppet/tables/Allowances.sol";
+import { TotalSupply } from "./modules/erc20-puppet/tables/TotalSupply.sol";
+import { Metadata, MetadataData } from "./modules/erc20-puppet/tables/Metadata.sol";
+import { ERC20Registry } from "./modules/erc20-puppet/tables/ERC20Registry.sol";

packages/world-modules/src/interfaces/IERC20System.sol

@@ -0,0 +1,32 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.8.21;
+
+/* Autogenerated file. Do not edit manually. */
+
+/**
+ * @title IERC20System
+ * @dev This interface is automatically generated from the corresponding system contract. Do not edit manually.
+ */
+interface IERC20System {
+  function name() external view returns (string memory);
+
+  function symbol() external view returns (string memory);
+
+  function decimals() external view returns (uint8);
+
+  function totalSupply() external view returns (uint256);
+
+  function balanceOf(address account) external view returns (uint256);
+
+  function allowance(address owner, address spender) external view returns (uint256);
+
+  function transfer(address to, uint256 value) external returns (bool);
+
+  function approve(address spender, uint256 value) external returns (bool);
+
+  function transferFrom(address from, address to, uint256 value) external returns (bool);
+
+  function mint(address account, uint256 value) external;
+
+  function burn(address account, uint256 value) external;
+}

packages/world-modules/src/modules/erc20-puppet/ERC20Module.sol

@@ -0,0 +1,93 @@
+// SPDX-License-Identifier: MIT
+pragma solidity >=0.8.21;
+
+import { ResourceIds } from "@latticexyz/store/src/codegen/tables/ResourceIds.sol";
+import { ResourceId } from "@latticexyz/store/src/ResourceId.sol";
+import { Module } from "@latticexyz/world/src/Module.sol";
+import { WorldResourceIdLib } from "@latticexyz/world/src/WorldResourceId.sol";
+import { IBaseWorld } from "@latticexyz/world/src/codegen/interfaces/IBaseWorld.sol";
+import { InstalledModules } from "@latticexyz/world/src/codegen/tables/InstalledModules.sol";
+
+import { Puppet } from "../puppet/Puppet.sol";
+import { createPuppet } from "../puppet/createPuppet.sol";
+import { MODULE_NAME as PUPPET_MODULE_NAME } from "../puppet/constants.sol";
+
+import { MODULE_NAME, MODULE_NAMESPACE, MODULE_NAMESPACE_ID, ERC20_REGISTRY_TABLE_ID } from "./constants.sol";
+import { _allowancesTableId, _balancesTableId, _metadataTableId, _erc20SystemId } from "./utils.sol";
+import { ERC20System } from "./ERC20System.sol";
+
+import { ERC20Registry } from "./tables/ERC20Registry.sol";
+import { Balances } from "./tables/Balances.sol";
+import { Allowances } from "./tables/Allowances.sol";
+import { Metadata, MetadataData } from "./tables/Metadata.sol";
+
+contract ERC20Module is Module {
+  error ERC20Module_InvalidNamespace(bytes14 namespace);
+
+  function getName() public pure override returns (bytes16) {
+    return MODULE_NAME;
+  }
+
+  /**
+   * Register systems and tables for a new ERC20 token in a given namespace
+   */
+  function _registerERC20(bytes14 namespace) internal {
+    // Register the tables
+    Allowances.register(_allowancesTableId(namespace));
+    Balances.register(_balancesTableId(namespace));
+    Metadata.register(_metadataTableId(namespace));
+
+    // Register a new ERC20System
+    IBaseWorld(_world()).registerSystem(_erc20SystemId(namespace), new ERC20System(), true);
+  }
+
+  function _requireDependencies() internal view {
+    // If the PuppetModule is not installed yet, install it
+    if (InstalledModules.get(PUPPET_MODULE_NAME, keccak256(new bytes(0))) == address(0)) {
+      revert Module_MissingDependency(string(bytes.concat(PUPPET_MODULE_NAME)));
+    }
+  }
+
+  function install(bytes memory args) public {
+    // Require the module to not be installed with these args yet
+    if (InstalledModules.get(MODULE_NAME, keccak256(args)) != address(0)) {
+      revert Module_AlreadyInstalled();
+    }
+
+    // Extract args
+    (bytes14 namespace, MetadataData memory metadata) = abi.decode(args, (bytes14, MetadataData));
+
+    // Require the namespace to not be the module's namespace
+    if (namespace == MODULE_NAMESPACE) {
+      revert ERC20Module_InvalidNamespace(namespace);
+    }
+
+    // Require dependencies
+    _requireDependencies();
+
+    // Register the ERC20 tables and system
+    _registerERC20(namespace);
+
+    // Initialize the Metadata
+    Metadata.set(_metadataTableId(namespace), metadata);
+
+    // Deploy and register the ERC20 puppet.
+    IBaseWorld world = IBaseWorld(_world());
+    ResourceId erc20SystemId = _erc20SystemId(namespace);
+    address puppet = createPuppet(world, erc20SystemId);
+
+    // Transfer ownership of the namespace to the caller
+    ResourceId namespaceId = WorldResourceIdLib.encodeNamespace(namespace);
+    world.transferOwnership(namespaceId, _msgSender());
+
+    // Register the ERC20 in the ERC20Registry
+    if (!ResourceIds.getExists(ERC20_REGISTRY_TABLE_ID)) {
+      ERC20Registry.register(ERC20_REGISTRY_TABLE_ID);
+    }
+    ERC20Registry.set(ERC20_REGISTRY_TABLE_ID, namespaceId, puppet);
+  }
+
+  function installRoot(bytes memory) public pure {
+    revert Module_RootInstallNotSupported();
+  }
+}