Rename UpgradeableProxy to ERC1967Proxy (#2547)

Co-authored-by: Francisco Giordano <frangio.1@gmail.com>
(cherry picked from commit c789941)

CHANGELOG.md

@@ -15,6 +15,7 @@
  * Meta Transactions: add `ERC2771Context` and a `MinimalForwarder` for meta-transactions. ([#2508](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2508))
  * Overall reorganisation of the contract folder to improve clarity and discoverability. ([#2503](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2503))
  * `ERC20Capped`: optimize gas usage of by enforcing te check directly in `_mint`. ([#2524](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2524))
+ * Rename `UpgradeableProxy` to `ERC1967Proxy`. ([#2547](https://github.com/OpenZeppelin/openzeppelin-contracts/pull/2547))
 
 ### How to upgrade from 3.x
 

contracts/proxy/UpgradeableProxy.sol → contracts/proxy/ERC1967/ERC1967Proxy.sol

@@ -2,8 +2,8 @@
 
 pragma solidity ^0.8.0;
 
-import "./Proxy.sol";
-import "../utils/Address.sol";
+import "../Proxy.sol";
+import "../../utils/Address.sol";
 
 /**
  * @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
@@ -14,7 +14,7 @@ import "../utils/Address.sol";
  * Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
  * {TransparentUpgradeableProxy}.
  */
-contract UpgradeableProxy is Proxy {
+contract ERC1967Proxy is Proxy {
     /**
      * @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
      *
@@ -66,7 +66,7 @@ contract UpgradeableProxy is Proxy {
      * @dev Stores a new address in the EIP1967 implementation slot.
      */
     function _setImplementation(address newImplementation) private {
-        require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");
+        require(Address.isContract(newImplementation), "ERC1967Proxy: new implementation is not a contract");
 
         bytes32 slot = _IMPLEMENTATION_SLOT;
 

contracts/proxy/README.adoc

@@ -7,7 +7,7 @@ This is a low-level set of contracts implementing different proxy patterns with
 
 The abstract {Proxy} contract implements the core delegation functionality. If the concrete proxies that we provide below are not suitable, we encourage building on top of this base contract since it contains an assembly block that may be hard to get right.
 
-Upgradeability is implemented in the {UpgradeableProxy} contract, although it provides only an internal upgrade interface. For an upgrade interface exposed externally to an admin, we provide {TransparentUpgradeableProxy}. Both of these contracts use the storage slots specified in https://eips.ethereum.org/EIPS/eip-1967[EIP1967] to avoid clashes with the storage of the implementation contract behind the proxy.
+{ERC1967Proxy} provides a simple, fully functioning, proxy. While this proxy is not by itself upgradeable, it includes an internal upgrade interface. For an upgrade interface exposed externally to an admin, we provide {TransparentUpgradeableProxy}. Both of these contracts use the storage slots specified in https://eips.ethereum.org/EIPS/eip-1967[EIP1967] to avoid clashes with the storage of the implementation contract behind the proxy.
 
 An alternative upgradeability mechanism is provided in <<Beacon>>. This pattern, popularized by Dharma, allows multiple proxies to be upgraded to a different implementation in a single transaction. In this pattern, the proxy contract doesn't hold the implementation address in storage like {UpgradeableProxy}, but the address of a {UpgradeableBeacon} contract, which is where the implementation address is actually stored and retrieved from. The `upgrade` operations that change the implementation contract address are then sent to the beacon instead of to the proxy contract, and all proxies that follow that beacon are automatically upgraded.
 
@@ -19,7 +19,9 @@ CAUTION: Using upgradeable proxies correctly and securely is a difficult task th
 
 {{Proxy}}
 
-{{UpgradeableProxy}}
+== ERC1967
+
+{{ERC1967Proxy}}
 
 == Transparent Proxy
 

contracts/proxy/transparent/TransparentUpgradeableProxy.sol

@@ -2,7 +2,7 @@
 
 pragma solidity ^0.8.0;
 
-import "../UpgradeableProxy.sol";
+import "../ERC1967/ERC1967Proxy.sol";
 
 /**
  * @dev This contract implements a proxy that is upgradeable by an admin.
@@ -25,12 +25,12 @@ import "../UpgradeableProxy.sol";
  * Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
  * you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
  */
-contract TransparentUpgradeableProxy is UpgradeableProxy {
+contract TransparentUpgradeableProxy is ERC1967Proxy {
     /**
      * @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
      * optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
      */
-    constructor(address _logic, address admin_, bytes memory _data) payable UpgradeableProxy(_logic, _data) {
+    constructor(address _logic, address admin_, bytes memory _data) payable ERC1967Proxy(_logic, _data) {
         assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
         _setAdmin(admin_);
     }

test/proxy/ERC1967/ERC1967Proxy.test.js

@@ -0,0 +1,13 @@
+const shouldBehaveLikeProxy = require('../Proxy.behaviour');
+
+const ERC1967Proxy = artifacts.require('ERC1967Proxy');
+
+contract('ERC1967Proxy', function (accounts) {
+  const [proxyAdminOwner] = accounts;
+
+  const createProxy = async function (implementation, _admin, initData, opts) {
+    return ERC1967Proxy.new(implementation, initData, opts);
+  };
+
+  shouldBehaveLikeProxy(createProxy, undefined, proxyAdminOwner);
+});

test/proxy/UpgradeableProxy.behaviour.js → test/proxy/Proxy.behaviour.js

@@ -11,7 +11,7 @@ function toChecksumAddress (address) {
   return ethereumjsUtil.toChecksumAddress('0x' + address.replace(/^0x/, '').padStart(40, '0'));
 }
 
-module.exports = function shouldBehaveLikeUpgradeableProxy (createProxy, proxyAdminAddress, proxyCreator) {
+module.exports = function shouldBehaveLikeProxy (createProxy, proxyAdminAddress, proxyCreator) {
   it('cannot be initialized with a non-contract address', async function () {
     const nonContractAddress = proxyCreator;
     const initializeData = Buffer.from('');

test/proxy/transparent/TransparentUpgradeableProxy.behaviour.js

@@ -80,7 +80,7 @@ module.exports = function shouldBehaveLikeTransparentUpgradeableProxy (createPro
         it('reverts', async function () {
           await expectRevert(
             this.proxy.upgradeTo(ZERO_ADDRESS, { from }),
-            'UpgradeableProxy: new implementation is not a contract',
+            'ERC1967Proxy: new implementation is not a contract',
           );
         });
       });

test/proxy/transparent/TransparentUpgradeableProxy.test.js

@@ -1,4 +1,4 @@
-const shouldBehaveLikeUpgradeableProxy = require('../UpgradeableProxy.behaviour');
+const shouldBehaveLikeProxy = require('../Proxy.behaviour');
 const shouldBehaveLikeTransparentUpgradeableProxy = require('./TransparentUpgradeableProxy.behaviour');
 
 const TransparentUpgradeableProxy = artifacts.require('TransparentUpgradeableProxy');
@@ -10,6 +10,6 @@ contract('TransparentUpgradeableProxy', function (accounts) {
     return TransparentUpgradeableProxy.new(logic, admin, initData, opts);
   };
 
-  shouldBehaveLikeUpgradeableProxy(createProxy, proxyAdminAddress, proxyAdminOwner);
+  shouldBehaveLikeProxy(createProxy, proxyAdminAddress, proxyAdminOwner);
   shouldBehaveLikeTransparentUpgradeableProxy(createProxy, accounts);
 });