{ "contractName": "ERC20Burnable", "abi": [ { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "owner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "spender", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "Approval", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "from", "type": "address" }, { "indexed": true, "internalType": "address", "name": "to", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "value", "type": "uint256" } ], "name": "Transfer", "type": "event" }, { "inputs": [ { "internalType": "address", "name": "owner", "type": "address" }, { "internalType": "address", "name": "spender", "type": "address" } ], "name": "allowance", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "approve", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "account", "type": "address" } ], "name": "balanceOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "decimals", "outputs": [ { "internalType": "uint8", "name": "", "type": "uint8" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "subtractedValue", "type": "uint256" } ], "name": "decreaseAllowance", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "spender", "type": "address" }, { "internalType": "uint256", "name": "addedValue", "type": "uint256" } ], "name": "increaseAllowance", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "name": "name", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "symbol", "outputs": [ { "internalType": "string", "name": "", "type": "string" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "totalSupply", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "transfer", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "from", "type": "address" }, { "internalType": "address", "name": "to", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "burn", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "account", "type": "address" }, { "internalType": "uint256", "name": "amount", "type": "uint256" } ], "name": "burnFrom", "outputs": [], "stateMutability": "nonpayable", "type": "function" } ], "metadata": "{\"compiler\":{\"version\":\"0.8.11+commit.d7f03943\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Approval\",\"type\":\"event\"},{\"anonymous\":false,\"inputs\":[{\"indexed\":true,\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"indexed\":true,\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"indexed\":false,\"internalType\":\"uint256\",\"name\":\"value\",\"type\":\"uint256\"}],\"name\":\"Transfer\",\"type\":\"event\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"owner\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"}],\"name\":\"allowance\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"approve\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"}],\"name\":\"balanceOf\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"burn\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"account\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"burnFrom\",\"outputs\":[],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"decimals\",\"outputs\":[{\"internalType\":\"uint8\",\"name\":\"\",\"type\":\"uint8\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"subtractedValue\",\"type\":\"uint256\"}],\"name\":\"decreaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"spender\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"addedValue\",\"type\":\"uint256\"}],\"name\":\"increaseAllowance\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"name\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"symbol\",\"outputs\":[{\"internalType\":\"string\",\"name\":\"\",\"type\":\"string\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[],\"name\":\"totalSupply\",\"outputs\":[{\"internalType\":\"uint256\",\"name\":\"\",\"type\":\"uint256\"}],\"stateMutability\":\"view\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transfer\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"},{\"inputs\":[{\"internalType\":\"address\",\"name\":\"from\",\"type\":\"address\"},{\"internalType\":\"address\",\"name\":\"to\",\"type\":\"address\"},{\"internalType\":\"uint256\",\"name\":\"amount\",\"type\":\"uint256\"}],\"name\":\"transferFrom\",\"outputs\":[{\"internalType\":\"bool\",\"name\":\"\",\"type\":\"bool\"}],\"stateMutability\":\"nonpayable\",\"type\":\"function\"}],\"devdoc\":{\"details\":\"Extension of {ERC20} that allows token holders to destroy both their own tokens and those that they have an allowance for, in a way that can be recognized off-chain (via event analysis).\",\"kind\":\"dev\",\"methods\":{\"allowance(address,address)\":{\"details\":\"See {IERC20-allowance}.\"},\"approve(address,uint256)\":{\"details\":\"See {IERC20-approve}. NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on `transferFrom`. This is semantically equivalent to an infinite approval. Requirements: - `spender` cannot be the zero address.\"},\"balanceOf(address)\":{\"details\":\"See {IERC20-balanceOf}.\"},\"burn(uint256)\":{\"details\":\"Destroys `amount` tokens from the caller. See {ERC20-_burn}.\"},\"burnFrom(address,uint256)\":{\"details\":\"Destroys `amount` tokens from `account`, deducting from the caller's allowance. See {ERC20-_burn} and {ERC20-allowance}. Requirements: - the caller must have allowance for ``accounts``'s tokens of at least `amount`.\"},\"decimals()\":{\"details\":\"Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5.05` (`505 / 10 ** 2`). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the value {ERC20} uses, unless this function is overridden; NOTE: This information is only used for _display_ purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}.\"},\"decreaseAllowance(address,uint256)\":{\"details\":\"Atomically decreases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`.\"},\"increaseAllowance(address,uint256)\":{\"details\":\"Atomically increases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address.\"},\"name()\":{\"details\":\"Returns the name of the token.\"},\"symbol()\":{\"details\":\"Returns the symbol of the token, usually a shorter version of the name.\"},\"totalSupply()\":{\"details\":\"See {IERC20-totalSupply}.\"},\"transfer(address,uint256)\":{\"details\":\"See {IERC20-transfer}. Requirements: - `to` cannot be the zero address. - the caller must have a balance of at least `amount`.\"},\"transferFrom(address,address,uint256)\":{\"details\":\"See {IERC20-transferFrom}. Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}. NOTE: Does not update the allowance if the current allowance is the maximum `uint256`. Requirements: - `from` and `to` cannot be the zero address. - `from` must have a balance of at least `amount`. - the caller must have allowance for ``from``'s tokens of at least `amount`.\"}},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol\":\"ERC20Burnable\"},\"evmVersion\":\"london\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/token/ERC20/ERC20.sol\":{\"keccak256\":\"0xdadd41acb749920eccf40aeaa8d291adf9751399a7343561bad13e7a8d99be0b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://12af4ac016f9fdf3be5d15824f4292272aa11f6b2e0192a0f7320f5ad49bbbf0\",\"dweb:/ipfs/QmRXMpdqCgA3TYuYxBodqs5p9jGbnMW6xa2gvjppvq4TWk\"]},\"@openzeppelin/contracts/token/ERC20/IERC20.sol\":{\"keccak256\":\"0xbbc8ac883ac3c0078ce5ad3e288fbb3ffcc8a30c3a98c0fda0114d64fc44fca2\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://87a7a5d2f6f63f84598af02b8c50ca2df2631cb8ba2453e8d95fcb17e4be9824\",\"dweb:/ipfs/QmR76hqtAcRqoFj33tmNjcWTLrgNsAaakYwnKZ8zoJtKei\"]},\"@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol\":{\"keccak256\":\"0x0d19410453cda55960a818e02bd7c18952a5c8fe7a3036e81f0d599f34487a7b\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://4c0f62d3d5bef22b5ca00cc3903e7de6152cb68d2d22401a463f373cda54c00f\",\"dweb:/ipfs/QmSfzjZux7LC7NW2f7rjCXTHeFMUCWERqDkhpCTBy7kxTe\"]},\"@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol\":{\"keccak256\":\"0x8de418a5503946cabe331f35fe242d3201a73f67f77aaeb7110acb1f30423aca\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://5a376d3dda2cb70536c0a45c208b29b34ac560c4cb4f513a42079f96ba47d2dd\",\"dweb:/ipfs/QmZQg6gn1sUpM8wHzwNvSnihumUCAhxD119MpXeKp8B9s8\"]},\"@openzeppelin/contracts/utils/Context.sol\":{\"keccak256\":\"0xe2e337e6dde9ef6b680e07338c493ebea1b5fd09b43424112868e9cc1706bca7\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6df0ddf21ce9f58271bdfaa85cde98b200ef242a05a3f85c2bc10a8294800a92\",\"dweb:/ipfs/QmRK2Y5Yc6BK7tGKkgsgn3aJEQGi5aakeSPZvS65PV8Xp3\"]}},\"version\":1}", "bytecode": "0x", "deployedBytecode": "0x", "immutableReferences": {}, "generatedSources": [], "deployedGeneratedSources": [], "sourceMap": "", "deployedSourceMap": "", "source": "// SPDX-License-Identifier: MIT\n// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/extensions/ERC20Burnable.sol)\n\npragma solidity ^0.8.0;\n\nimport \"../ERC20.sol\";\nimport \"../../../utils/Context.sol\";\n\n/**\n * @dev Extension of {ERC20} that allows token holders to destroy both their own\n * tokens and those that they have an allowance for, in a way that can be\n * recognized off-chain (via event analysis).\n */\nabstract contract ERC20Burnable is Context, ERC20 {\n /**\n * @dev Destroys `amount` tokens from the caller.\n *\n * See {ERC20-_burn}.\n */\n function burn(uint256 amount) public virtual {\n _burn(_msgSender(), amount);\n }\n\n /**\n * @dev Destroys `amount` tokens from `account`, deducting from the caller's\n * allowance.\n *\n * See {ERC20-_burn} and {ERC20-allowance}.\n *\n * Requirements:\n *\n * - the caller must have allowance for ``accounts``'s tokens of at least\n * `amount`.\n */\n function burnFrom(address account, uint256 amount) public virtual {\n _spendAllowance(account, _msgSender(), amount);\n _burn(account, amount);\n }\n}\n", "sourcePath": "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol", "ast": { "absolutePath": "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol", "exportedSymbols": { "Context": [ 5297 ], "ERC20": [ 2806 ], "ERC20Burnable": [ 2928 ], "IERC20": [ 2884 ], "IERC20Metadata": [ 3590 ] }, "id": 2929, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 2886, "literals": [ "solidity", "^", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "124:23:15" }, { "absolutePath": "@openzeppelin/contracts/token/ERC20/ERC20.sol", "file": "../ERC20.sol", "id": 2887, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 2929, "sourceUnit": 2807, "src": "149:22:15", "symbolAliases": [], "unitAlias": "" }, { "absolutePath": "@openzeppelin/contracts/utils/Context.sol", "file": "../../../utils/Context.sol", "id": 2888, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 2929, "sourceUnit": 5298, "src": "172:36:15", "symbolAliases": [], "unitAlias": "" }, { "abstract": true, "baseContracts": [ { "baseName": { "id": 2890, "name": "Context", "nodeType": "IdentifierPath", "referencedDeclaration": 5297, "src": "454:7:15" }, "id": 2891, "nodeType": "InheritanceSpecifier", "src": "454:7:15" }, { "baseName": { "id": 2892, "name": "ERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 2806, "src": "463:5:15" }, "id": 2893, "nodeType": "InheritanceSpecifier", "src": "463:5:15" } ], "canonicalName": "ERC20Burnable", "contractDependencies": [], "contractKind": "contract", "documentation": { "id": 2889, "nodeType": "StructuredDocumentation", "src": "210:208:15", "text": " @dev Extension of {ERC20} that allows token holders to destroy both their own\n tokens and those that they have an allowance for, in a way that can be\n recognized off-chain (via event analysis)." }, "fullyImplemented": false, "id": 2928, "linearizedBaseContracts": [ 2928, 2806, 3590, 2884, 5297 ], "name": "ERC20Burnable", "nameLocation": "437:13:15", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 2905, "nodeType": "Block", "src": "623:44:15", "statements": [ { "expression": { "arguments": [ { "arguments": [], "expression": { "argumentTypes": [], "id": 2900, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5287, "src": "639:10:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 2901, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "639:12:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2902, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2896, "src": "653:6:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2899, "name": "_burn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2695, "src": "633:5:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 2903, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "633:27:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2904, "nodeType": "ExpressionStatement", "src": "633:27:15" } ] }, "documentation": { "id": 2894, "nodeType": "StructuredDocumentation", "src": "475:98:15", "text": " @dev Destroys `amount` tokens from the caller.\n See {ERC20-_burn}." }, "functionSelector": "42966c68", "id": 2906, "implemented": true, "kind": "function", "modifiers": [], "name": "burn", "nameLocation": "587:4:15", "nodeType": "FunctionDefinition", "parameters": { "id": 2897, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2896, "mutability": "mutable", "name": "amount", "nameLocation": "600:6:15", "nodeType": "VariableDeclaration", "scope": 2906, "src": "592:14:15", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2895, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "592:7:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "591:16:15" }, "returnParameters": { "id": 2898, "nodeType": "ParameterList", "parameters": [], "src": "623:0:15" }, "scope": 2928, "src": "578:89:15", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" }, { "body": { "id": 2926, "nodeType": "Block", "src": "1039:95:15", "statements": [ { "expression": { "arguments": [ { "id": 2915, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2909, "src": "1065:7:15", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "arguments": [], "expression": { "argumentTypes": [], "id": 2916, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5287, "src": "1074:10:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 2917, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1074:12:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2918, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2911, "src": "1088:6:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2914, "name": "_spendAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2783, "src": "1049:15:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 2919, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1049:46:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2920, "nodeType": "ExpressionStatement", "src": "1049:46:15" }, { "expression": { "arguments": [ { "id": 2922, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2909, "src": "1111:7:15", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2923, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2911, "src": "1120:6:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2921, "name": "_burn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2695, "src": "1105:5:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 2924, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1105:22:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2925, "nodeType": "ExpressionStatement", "src": "1105:22:15" } ] }, "documentation": { "id": 2907, "nodeType": "StructuredDocumentation", "src": "673:295:15", "text": " @dev Destroys `amount` tokens from `account`, deducting from the caller's\n allowance.\n See {ERC20-_burn} and {ERC20-allowance}.\n Requirements:\n - the caller must have allowance for ``accounts``'s tokens of at least\n `amount`." }, "functionSelector": "79cc6790", "id": 2927, "implemented": true, "kind": "function", "modifiers": [], "name": "burnFrom", "nameLocation": "982:8:15", "nodeType": "FunctionDefinition", "parameters": { "id": 2912, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2909, "mutability": "mutable", "name": "account", "nameLocation": "999:7:15", "nodeType": "VariableDeclaration", "scope": 2927, "src": "991:15:15", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2908, "name": "address", "nodeType": "ElementaryTypeName", "src": "991:7:15", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 2911, "mutability": "mutable", "name": "amount", "nameLocation": "1016:6:15", "nodeType": "VariableDeclaration", "scope": 2927, "src": "1008:14:15", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2910, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1008:7:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "990:33:15" }, "returnParameters": { "id": 2913, "nodeType": "ParameterList", "parameters": [], "src": "1039:0:15" }, "scope": 2928, "src": "973:161:15", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" } ], "scope": 2929, "src": "419:717:15", "usedErrors": [] } ], "src": "124:1013:15" }, "legacyAST": { "absolutePath": "@openzeppelin/contracts/token/ERC20/extensions/ERC20Burnable.sol", "exportedSymbols": { "Context": [ 5297 ], "ERC20": [ 2806 ], "ERC20Burnable": [ 2928 ], "IERC20": [ 2884 ], "IERC20Metadata": [ 3590 ] }, "id": 2929, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 2886, "literals": [ "solidity", "^", "0.8", 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"src": "463:5:15" } ], "canonicalName": "ERC20Burnable", "contractDependencies": [], "contractKind": "contract", "documentation": { "id": 2889, "nodeType": "StructuredDocumentation", "src": "210:208:15", "text": " @dev Extension of {ERC20} that allows token holders to destroy both their own\n tokens and those that they have an allowance for, in a way that can be\n recognized off-chain (via event analysis)." }, "fullyImplemented": false, "id": 2928, "linearizedBaseContracts": [ 2928, 2806, 3590, 2884, 5297 ], "name": "ERC20Burnable", "nameLocation": "437:13:15", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 2905, "nodeType": "Block", "src": "623:44:15", "statements": [ { "expression": { "arguments": [ { "arguments": [], "expression": { "argumentTypes": [], "id": 2900, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5287, "src": "639:10:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 2901, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "639:12:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2902, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2896, "src": "653:6:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2899, "name": "_burn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2695, "src": "633:5:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 2903, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "633:27:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2904, "nodeType": "ExpressionStatement", "src": "633:27:15" } ] }, "documentation": { "id": 2894, "nodeType": "StructuredDocumentation", "src": "475:98:15", "text": " @dev Destroys `amount` tokens from the caller.\n See {ERC20-_burn}." }, "functionSelector": "42966c68", "id": 2906, "implemented": true, "kind": "function", "modifiers": [], "name": "burn", "nameLocation": "587:4:15", "nodeType": "FunctionDefinition", "parameters": { "id": 2897, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2896, "mutability": "mutable", "name": "amount", "nameLocation": "600:6:15", "nodeType": "VariableDeclaration", "scope": 2906, "src": "592:14:15", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2895, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "592:7:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "591:16:15" }, "returnParameters": { "id": 2898, "nodeType": "ParameterList", "parameters": [], "src": "623:0:15" }, "scope": 2928, "src": "578:89:15", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" }, { "body": { "id": 2926, "nodeType": "Block", "src": "1039:95:15", "statements": [ { "expression": { "arguments": [ { "id": 2915, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2909, "src": "1065:7:15", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "arguments": [], "expression": { "argumentTypes": [], "id": 2916, "name": "_msgSender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5287, "src": "1074:10:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 2917, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1074:12:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2918, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2911, "src": "1088:6:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2914, "name": "_spendAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2783, "src": "1049:15:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,address,uint256)" } }, "id": 2919, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1049:46:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2920, "nodeType": "ExpressionStatement", "src": "1049:46:15" }, { "expression": { "arguments": [ { "id": 2922, "name": "account", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2909, "src": "1111:7:15", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 2923, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2911, "src": "1120:6:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2921, "name": "_burn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2695, "src": "1105:5:15", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_uint256_$returns$__$", "typeString": "function (address,uint256)" } }, "id": 2924, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1105:22:15", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2925, "nodeType": "ExpressionStatement", "src": "1105:22:15" } ] }, "documentation": { "id": 2907, "nodeType": "StructuredDocumentation", "src": "673:295:15", "text": " @dev Destroys `amount` tokens from `account`, deducting from the caller's\n allowance.\n See {ERC20-_burn} and {ERC20-allowance}.\n Requirements:\n - the caller must have allowance for ``accounts``'s tokens of at least\n `amount`." }, "functionSelector": "79cc6790", "id": 2927, "implemented": true, "kind": "function", "modifiers": [], "name": "burnFrom", "nameLocation": "982:8:15", "nodeType": "FunctionDefinition", "parameters": { "id": 2912, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2909, "mutability": "mutable", "name": "account", "nameLocation": "999:7:15", "nodeType": "VariableDeclaration", "scope": 2927, "src": "991:15:15", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2908, "name": "address", "nodeType": "ElementaryTypeName", "src": "991:7:15", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 2911, "mutability": "mutable", "name": "amount", "nameLocation": "1016:6:15", "nodeType": "VariableDeclaration", "scope": 2927, "src": "1008:14:15", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2910, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1008:7:15", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "990:33:15" }, "returnParameters": { "id": 2913, "nodeType": "ParameterList", "parameters": [], "src": "1039:0:15" }, "scope": 2928, "src": "973:161:15", "stateMutability": "nonpayable", "virtual": true, "visibility": "public" } ], "scope": 2929, "src": "419:717:15", "usedErrors": [] } ], "src": "124:1013:15" }, "compiler": { "name": "solc", "version": "0.8.11+commit.d7f03943.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.4.4", "updatedAt": "2022-03-06T23:47:11.023Z", "devdoc": { "details": "Extension of {ERC20} that allows token holders to destroy both their own tokens and those that they have an allowance for, in a way that can be recognized off-chain (via event analysis).", "kind": "dev", "methods": { "allowance(address,address)": { "details": "See {IERC20-allowance}." }, "approve(address,uint256)": { "details": "See {IERC20-approve}. NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on `transferFrom`. This is semantically equivalent to an infinite approval. Requirements: - `spender` cannot be the zero address." }, "balanceOf(address)": { "details": "See {IERC20-balanceOf}." }, "burn(uint256)": { "details": "Destroys `amount` tokens from the caller. See {ERC20-_burn}." }, "burnFrom(address,uint256)": { "details": "Destroys `amount` tokens from `account`, deducting from the caller's allowance. See {ERC20-_burn} and {ERC20-allowance}. Requirements: - the caller must have allowance for ``accounts``'s tokens of at least `amount`." }, "decimals()": { "details": "Returns the number of decimals used to get its user representation. For example, if `decimals` equals `2`, a balance of `505` tokens should be displayed to a user as `5.05` (`505 / 10 ** 2`). Tokens usually opt for a value of 18, imitating the relationship between Ether and Wei. This is the value {ERC20} uses, unless this function is overridden; NOTE: This information is only used for _display_ purposes: it in no way affects any of the arithmetic of the contract, including {IERC20-balanceOf} and {IERC20-transfer}." }, "decreaseAllowance(address,uint256)": { "details": "Atomically decreases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address. - `spender` must have allowance for the caller of at least `subtractedValue`." }, "increaseAllowance(address,uint256)": { "details": "Atomically increases the allowance granted to `spender` by the caller. This is an alternative to {approve} that can be used as a mitigation for problems described in {IERC20-approve}. Emits an {Approval} event indicating the updated allowance. Requirements: - `spender` cannot be the zero address." }, "name()": { "details": "Returns the name of the token." }, "symbol()": { "details": "Returns the symbol of the token, usually a shorter version of the name." }, "totalSupply()": { "details": "See {IERC20-totalSupply}." }, "transfer(address,uint256)": { "details": "See {IERC20-transfer}. Requirements: - `to` cannot be the zero address. - the caller must have a balance of at least `amount`." }, "transferFrom(address,address,uint256)": { "details": "See {IERC20-transferFrom}. Emits an {Approval} event indicating the updated allowance. This is not required by the EIP. See the note at the beginning of {ERC20}. NOTE: Does not update the allowance if the current allowance is the maximum `uint256`. Requirements: - `from` and `to` cannot be the zero address. - `from` must have a balance of at least `amount`. - the caller must have allowance for ``from``'s tokens of at least `amount`." } }, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }