{ "contractName": "DiamondCutFacet", "abi": [ { "anonymous": false, "inputs": [ { "components": [ { "internalType": "address", "name": "facetAddress", "type": "address" }, { "internalType": "bytes4[]", "name": "functionSelectors", "type": "bytes4[]" } ], "indexed": false, "internalType": "struct IDiamondCut.Facet[]", "name": "_diamondCut", "type": "tuple[]" }, { "indexed": false, "internalType": "address", "name": "_init", "type": "address" }, { "indexed": false, "internalType": "bytes", "name": "_calldata", "type": "bytes" } ], "name": "DiamondCut", "type": "event" }, { "inputs": [ { "components": [ { "internalType": "address", "name": "facetAddress", "type": "address" }, { "internalType": "bytes4[]", "name": "functionSelectors", "type": "bytes4[]" } ], "internalType": "struct IDiamondCut.Facet[]", "name": "_diamondCut", "type": "tuple[]" }, { "internalType": "address", "name": "_init", "type": "address" }, { "internalType": "bytes", "name": "_calldata", "type": "bytes" } ], "name": "diamondCut", "outputs": [], "stateMutability": "nonpayable", "type": "function" } ], "bytecode": 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"linkReferences": {}, "deployedLinkReferences": {}, "metadata": "{\"compiler\":{\"version\":\"0.7.1+commit.f4a555be\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"facetAddress\",\"type\":\"address\"},{\"internalType\":\"bytes4[]\",\"name\":\"functionSelectors\",\"type\":\"bytes4[]\"}],\"indexed\":false,\"internalType\":\"struct IDiamondCut.Facet[]\",\"name\":\"_diamondCut\",\"type\":\"tuple[]\"},{\"indexed\":false,\"internalType\":\"address\",\"name\":\"_init\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"bytes\",\"name\":\"_calldata\",\"type\":\"bytes\"}],\"name\":\"DiamondCut\",\"type\":\"event\"},{\"inputs\":[{\"components\":[{\"internalType\":\"address\",\"name\":\"facetAddress\",\"type\":\"address\"},{\"internalType\":\"bytes4[]\",\"name\":\"functionSelectors\",\"type\":\"bytes4[]\"}],\"internalType\":\"struct IDiamondCut.Facet[]\",\"name\":\"_diamondCut\",\"type\":\"tuple[]\"},{\"internalType\":\"address\",\"name\":\"_init\",\"type\":\"address\"},{\"internalType\":\"bytes\",\"name\":\"_calldata\",\"type\":\"bytes\"}],\"name\":\"diamondCut\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"kind\":\"dev\",\"methods\":{\"diamondCut((address,bytes4[])[],address,bytes)\":{\"params\":{\"_calldata\":\"A function call, including function selector and arguments _calldata is executed with delegatecall on _init\",\"_diamondCut\":\"Contains the facet addresses and function selectors\",\"_init\":\"The address of the contract or facet to execute _calldata\"}}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{\"diamondCut((address,bytes4[])[],address,bytes)\":{\"notice\":\"Add/replace/remove any number of functions and optionally execute a function with delegatecall\"}},\"version\":1}},\"settings\":{\"compilationTarget\":{\"solc_0.7/diamond/facets/DiamondCutFacet.sol\":\"DiamondCutFacet\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\",\"useLiteralContent\":true},\"optimizer\":{\"enabled\":true,\"runs\":2000},\"remappings\":[]},\"sources\":{\"solc_0.7/diamond/facets/DiamondCutFacet.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity ^0.7.1;\\npragma experimental ABIEncoderV2;\\n\\n/******************************************************************************\\\\\\n* Author: Nick Mudge (https://twitter.com/mudgen)\\n*\\n* Implementation of diamondCut external function.\\n/******************************************************************************/\\n\\nimport \\\"../libraries/LibDiamondStorage.sol\\\";\\nimport \\\"../interfaces/IDiamondCut.sol\\\";\\nimport \\\"../libraries/LibDiamondCut.sol\\\";\\n\\ncontract DiamondCutFacet is IDiamondCut {\\n // Standard diamondCut external function\\n /// @notice Add/replace/remove any number of functions and optionally execute\\n /// a function with delegatecall\\n /// @param _diamondCut Contains the facet addresses and function selectors\\n /// @param _init The address of the contract or facet to execute _calldata\\n /// @param _calldata A function call, including function selector and arguments\\n /// _calldata is executed with delegatecall on _init\\n function diamondCut(\\n Facet[] calldata _diamondCut,\\n address _init,\\n bytes calldata _calldata\\n ) external override {\\n externalCut(_diamondCut);\\n emit DiamondCut(_diamondCut, _init, _calldata);\\n if (_init == address(0)) {\\n require(_calldata.length == 0, \\\"DiamondCutFacet: _init is address(0) but_calldata is not empty\\\");\\n } else {\\n require(_calldata.length > 0, \\\"DiamondCutFacet: _calldata is empty but _init is not address(0)\\\");\\n if (_init != address(this)) {\\n LibDiamondCut.hasContractCode(_init, \\\"DiamondCutFacet: _init address has no code\\\");\\n }\\n (bool success, bytes memory error) = _init.delegatecall(_calldata);\\n if (!success) {\\n if (error.length > 0) {\\n // bubble up the error\\n revert(string(error));\\n } else {\\n revert(\\\"DiamondCutFacet: _init function reverted\\\");\\n }\\n }\\n }\\n }\\n\\n // diamondCut helper function\\n // This code is almost the same as the internal diamondCut function,\\n // except it is using 'Facets[] calldata _diamondCut' instead of\\n // 'Facet[] memory _diamondCut', and it does not issue the DiamondCut event.\\n // The code is duplicated to prevent copying calldata to memory which\\n // causes a Solidity error for two dimensional arrays.\\n function externalCut(Facet[] calldata _diamondCut) internal {\\n LibDiamondStorage.DiamondStorage storage ds = LibDiamondStorage.diamondStorage();\\n require(msg.sender == ds.contractOwner, \\\"Must own the contract.\\\");\\n for (uint256 facetIndex; facetIndex < _diamondCut.length; facetIndex++) {\\n address newFacetAddress = _diamondCut[facetIndex].facetAddress;\\n // add or replace function\\n if (newFacetAddress != address(0)) {\\n uint256 facetAddressPosition = ds.facetFunctionSelectors[newFacetAddress].facetAddressPosition;\\n // add new facet address if it does not exist\\n if (facetAddressPosition == 0 && ds.facetFunctionSelectors[newFacetAddress].functionSelectors.length == 0) {\\n LibDiamondCut.hasContractCode(newFacetAddress, \\\"DiamondCutFacet: New facet has no code\\\");\\n facetAddressPosition = ds.facetAddresses.length;\\n ds.facetAddresses.push(newFacetAddress);\\n ds.facetFunctionSelectors[newFacetAddress].facetAddressPosition = uint16(facetAddressPosition);\\n }\\n // add or replace selectors\\n for (uint256 selectorIndex; selectorIndex < _diamondCut[facetIndex].functionSelectors.length; selectorIndex++) {\\n bytes4 selector = _diamondCut[facetIndex].functionSelectors[selectorIndex];\\n address oldFacet = ds.selectorToFacetAndPosition[selector].facetAddress;\\n // add\\n if (oldFacet == address(0)) {\\n LibDiamondCut.addSelector(newFacetAddress, selector);\\n } else {\\n // replace\\n if (oldFacet != newFacetAddress) {\\n LibDiamondCut.removeSelector(selector);\\n LibDiamondCut.addSelector(newFacetAddress, selector);\\n }\\n }\\n }\\n } else {\\n // remove selectors\\n for (uint256 selectorIndex; selectorIndex < _diamondCut[facetIndex].functionSelectors.length; selectorIndex++) {\\n LibDiamondCut.removeSelector(_diamondCut[facetIndex].functionSelectors[selectorIndex]);\\n }\\n }\\n }\\n }\\n}\\n\",\"keccak256\":\"0xe5cefda560bdf00d7e412ef747e28f2076d07b32221ccdfaa607aaab0ca30029\",\"license\":\"MIT\"},\"solc_0.7/diamond/interfaces/IDiamondCut.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity ^0.7.1;\\npragma experimental ABIEncoderV2;\\n\\n/******************************************************************************\\\\\\n* Author: Nick Mudge (https://twitter.com/mudgen)\\n/******************************************************************************/\\n\\ninterface IDiamondCut {\\n struct Facet {\\n address facetAddress;\\n bytes4[] functionSelectors;\\n }\\n\\n /// @notice Add/replace/remove any number of functions and optionally execute\\n /// a function with delegatecall\\n /// @param _diamondCut Contains the facet addresses and function selectors\\n /// @param _init The address of the contract or facet to execute _calldata\\n /// @param _calldata A function call, including function selector and arguments\\n /// _calldata is executed with delegatecall on _init\\n function diamondCut(\\n Facet[] calldata _diamondCut,\\n address _init,\\n bytes calldata _calldata\\n ) external;\\n\\n event DiamondCut(Facet[] _diamondCut, address _init, bytes _calldata);\\n}\\n\",\"keccak256\":\"0xba9cbedda8b486e17512639ee5ca6a4de1638b55c26b130e61cbbaa632acdef5\",\"license\":\"MIT\"},\"solc_0.7/diamond/libraries/LibDiamondCut.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity ^0.7.1;\\npragma experimental ABIEncoderV2;\\n\\n/******************************************************************************\\\\\\n* Author: Nick Mudge (https://twitter.com/mudgen)\\n*\\n* Implementation of internal diamondCut function.\\n/******************************************************************************/\\n\\nimport \\\"./LibDiamondStorage.sol\\\";\\nimport \\\"../interfaces/IDiamondCut.sol\\\";\\n\\nlibrary LibDiamondCut {\\n event DiamondCut(IDiamondCut.Facet[] _diamondCut, address _init, bytes _calldata);\\n\\n // Non-standard internal function version of diamondCut\\n // This code is almost the same as externalCut, except it is using\\n // 'Facet[] memory _diamondCut' instead of 'Facet[] calldata _diamondCut'\\n // and it DOES issue the DiamondCut event\\n // The code is duplicated to prevent copying calldata to memory which\\n // causes a Solidity error for a two dimensional array.\\n function diamondCut(IDiamondCut.Facet[] memory _diamondCut) internal {\\n LibDiamondStorage.DiamondStorage storage ds = LibDiamondStorage.diamondStorage();\\n for (uint256 facetIndex; facetIndex < _diamondCut.length; facetIndex++) {\\n address newFacetAddress = _diamondCut[facetIndex].facetAddress;\\n // add or replace function\\n if (newFacetAddress != address(0)) {\\n uint256 facetAddressPosition = ds.facetFunctionSelectors[newFacetAddress].facetAddressPosition;\\n // add new facet address if it does not exist\\n if (facetAddressPosition == 0 && ds.facetFunctionSelectors[newFacetAddress].functionSelectors.length == 0) {\\n hasContractCode(newFacetAddress, \\\"LibDiamondCut: New facet has no code\\\");\\n facetAddressPosition = ds.facetAddresses.length;\\n ds.facetAddresses.push(newFacetAddress);\\n ds.facetFunctionSelectors[newFacetAddress].facetAddressPosition = uint16(facetAddressPosition);\\n }\\n // add or replace selectors\\n for (uint256 selectorIndex; selectorIndex < _diamondCut[facetIndex].functionSelectors.length; selectorIndex++) {\\n bytes4 selector = _diamondCut[facetIndex].functionSelectors[selectorIndex];\\n address oldFacet = ds.selectorToFacetAndPosition[selector].facetAddress;\\n // add\\n if (oldFacet == address(0)) {\\n addSelector(newFacetAddress, selector);\\n } else {\\n // replace\\n if (oldFacet != newFacetAddress) {\\n removeSelector(selector);\\n addSelector(newFacetAddress, selector);\\n }\\n }\\n }\\n } else {\\n // remove selectors\\n for (uint256 selectorIndex; selectorIndex < _diamondCut[facetIndex].functionSelectors.length; selectorIndex++) {\\n removeSelector(_diamondCut[facetIndex].functionSelectors[selectorIndex]);\\n }\\n }\\n }\\n emit DiamondCut(_diamondCut, address(0), new bytes(0));\\n }\\n\\n function addSelector(address _newFacet, bytes4 _selector) internal {\\n LibDiamondStorage.DiamondStorage storage ds = LibDiamondStorage.diamondStorage();\\n uint256 selectorPosition = ds.facetFunctionSelectors[_newFacet].functionSelectors.length;\\n ds.facetFunctionSelectors[_newFacet].functionSelectors.push(_selector);\\n ds.selectorToFacetAndPosition[_selector].facetAddress = _newFacet;\\n ds.selectorToFacetAndPosition[_selector].functionSelectorPosition = uint16(selectorPosition);\\n }\\n\\n function removeSelector(bytes4 _selector) internal {\\n LibDiamondStorage.DiamondStorage storage ds = LibDiamondStorage.diamondStorage();\\n address oldFacet = ds.selectorToFacetAndPosition[_selector].facetAddress;\\n // if function does not exist then do nothing and return\\n if (oldFacet == address(0)) {\\n return;\\n }\\n // replace selector with last selector, then delete last selector\\n uint256 selectorPosition = ds.selectorToFacetAndPosition[_selector].functionSelectorPosition;\\n uint256 lastSelectorPosition = ds.facetFunctionSelectors[oldFacet].functionSelectors.length - 1;\\n bytes4 lastSelector = ds.facetFunctionSelectors[oldFacet].functionSelectors[lastSelectorPosition];\\n // if not the same then replace _selector with lastSelector\\n if (lastSelector != _selector) {\\n ds.facetFunctionSelectors[oldFacet].functionSelectors[selectorPosition] = lastSelector;\\n ds.selectorToFacetAndPosition[lastSelector].functionSelectorPosition = uint16(selectorPosition);\\n }\\n // delete the last selector\\n ds.facetFunctionSelectors[oldFacet].functionSelectors.pop();\\n delete ds.selectorToFacetAndPosition[_selector];\\n\\n // if no more selectors for facet address then delete the facet address\\n if (lastSelectorPosition == 0) {\\n // replace facet address with last facet address and delete last facet address\\n uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1;\\n address lastFacetAddress = ds.facetAddresses[lastFacetAddressPosition];\\n uint256 facetAddressPosition = ds.facetFunctionSelectors[oldFacet].facetAddressPosition;\\n if (oldFacet != lastFacetAddress) {\\n ds.facetAddresses[facetAddressPosition] = lastFacetAddress;\\n ds.facetFunctionSelectors[lastFacetAddress].facetAddressPosition = uint16(facetAddressPosition);\\n }\\n ds.facetAddresses.pop();\\n delete ds.facetFunctionSelectors[oldFacet];\\n }\\n }\\n\\n function hasContractCode(address _contract, string memory _errorMessage) internal view {\\n uint256 contractSize;\\n assembly {\\n contractSize := extcodesize(_contract)\\n }\\n require(contractSize > 0, _errorMessage);\\n }\\n}\\n\",\"keccak256\":\"0x2b0552b7626a43189f62e6b8e7ac6e257a0d6ebe6f03a44d2da12c931a96155b\",\"license\":\"MIT\"},\"solc_0.7/diamond/libraries/LibDiamondStorage.sol\":{\"content\":\"// SPDX-License-Identifier: MIT\\npragma solidity ^0.7.1;\\npragma experimental ABIEncoderV2;\\n\\n/******************************************************************************\\\\\\n* Author: Nick Mudge (https://twitter.com/mudgen)\\n/******************************************************************************/\\n\\nlibrary LibDiamondStorage {\\n bytes32 constant DIAMOND_STORAGE_POSITION = keccak256(\\\"diamond.standard.diamond.storage\\\");\\n\\n struct FacetAddressAndPosition {\\n address facetAddress;\\n uint16 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array\\n }\\n\\n struct FacetFunctionSelectors {\\n bytes4[] functionSelectors;\\n uint16 facetAddressPosition; // position of facetAddress in facetAddresses array\\n }\\n\\n struct DiamondStorage {\\n // owner of the contract\\n address contractOwner;\\n // maps function selector to the facet address and \\n // the position of the selector in the facetFunctionSelectors.selectors array\\n mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition;\\n // maps facet addresses to function selectors\\n mapping(address => FacetFunctionSelectors) facetFunctionSelectors;\\n // facet addresses\\n address[] facetAddresses;\\n // Used to query if a contract implements an interface.\\n // Used to implement ERC-165.\\n mapping(bytes4 => bool) supportedInterfaces;\\n }\\n\\n function diamondStorage() internal pure returns (DiamondStorage storage ds) {\\n bytes32 position = DIAMOND_STORAGE_POSITION;\\n assembly {\\n ds.slot := position\\n }\\n }\\n}\\n\",\"keccak256\":\"0xe775d2cb83a52f9bc6341b6331acd86527a7870dca3193cfcad3db6206017ed2\",\"license\":\"MIT\"}},\"version\":1}", "contractFilepath": "solc_0.7/diamond/facets/DiamondCutFacet.sol", "methodIdentifiers": { "diamondCut((address,bytes4[])[],address,bytes)": "e712b4e1" }, "gasEstimates": { "creation": { "codeDepositCost": "780000", "executionCost": "812", "totalCost": "780812" }, "external": { "diamondCut((address,bytes4[])[],address,bytes)": "infinite" }, "internal": { "externalCut(struct IDiamondCut.Facet calldata[] calldata)": "infinite" } }, "storageLayout": { "storage": [], "types": null }, "userdoc": { "kind": "user", "methods": { "diamondCut((address,bytes4[])[],address,bytes)": { "notice": "Add/replace/remove any number of functions and optionally execute a function with delegatecall" } }, "version": 1 }, "devdoc": { "kind": "dev", "methods": { "diamondCut((address,bytes4[])[],address,bytes)": { "params": { "_calldata": "A function call, including function selector and arguments _calldata is executed with delegatecall on _init", "_diamondCut": "Contains the facet addresses and function selectors", "_init": "The address of the contract or facet to execute _calldata" } } }, "version": 1 } }