{ "contractName": "Test_Token", "abi": [ { "inputs": [ { "internalType": "uint256", "name": "_initialAmount", "type": "uint256" }, { "internalType": "string", "name": "_tokenName", "type": "string" }, { "internalType": "uint8", "name": "_decimalUnits", "type": "uint8" }, { "internalType": "string", "name": "_tokenSymbol", "type": "string" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "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": "", "type": "address" }, { "internalType": "address", "name": "", "type": "address" } ], "name": "allowed", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "", "type": "address" } ], "name": "balances", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "decimals", "outputs": [ { "internalType": "uint8", "name": "", "type": "uint8" } ], "stateMutability": "view", "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": "_value", "type": "uint256" } ], "name": "transfer", "outputs": [ { "internalType": "bool", "name": "success", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "_from", "type": "address" }, { "internalType": "address", "name": "_to", "type": "address" }, { "internalType": "uint256", "name": "_value", "type": "uint256" } ], "name": "transferFrom", "outputs": [ { "internalType": "bool", "name": "success", "type": "bool" } ], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "_owner", "type": "address" } ], "name": "balanceOf", 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function abi_decode_available_length_t_string_memory_ptr_fromMemory(src, length, end) -> array {\n array := allocateMemory(array_allocation_size_t_string_memory_ptr(length))\n mstore(array, length)\n let dst := add(array, 0x20)\n if gt(add(src, length), end) { revert(0, 0) }\n copy_memory_to_memory(src, dst, length)\n }\n\n // string\n function abi_decode_t_string_memory_ptr_fromMemory(offset, end) -> array {\n if iszero(slt(add(offset, 0x1f), end)) { revert(0, 0) }\n let length := mload(offset)\n array := abi_decode_available_length_t_string_memory_ptr_fromMemory(add(offset, 0x20), length, end)\n }\n\n function abi_decode_t_uint256_fromMemory(offset, end) -> value {\n value := mload(offset)\n validator_revert_t_uint256(value)\n }\n\n function abi_decode_t_uint8_fromMemory(offset, end) -> value {\n value := mload(offset)\n validator_revert_t_uint8(value)\n }\n\n function abi_decode_tuple_t_uint256t_string_memory_ptrt_uint8t_string_memory_ptr_fromMemory(headStart, dataEnd) -> value0, value1, value2, value3 {\n if slt(sub(dataEnd, headStart), 128) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_uint256_fromMemory(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := mload(add(headStart, 32))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n\n value1 := abi_decode_t_string_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 64\n\n value2 := abi_decode_t_uint8_fromMemory(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := mload(add(headStart, 96))\n if gt(offset, 0xffffffffffffffff) { revert(0, 0) }\n\n value3 := abi_decode_t_string_memory_ptr_fromMemory(add(headStart, offset), dataEnd)\n }\n\n }\n\n function allocateMemory(size) -> memPtr {\n memPtr := mload(64)\n let newFreePtr := add(memPtr, size)\n // protect against overflow\n if or(gt(newFreePtr, 0xffffffffffffffff), lt(newFreePtr, memPtr)) { panic_error_0x41() }\n mstore(64, newFreePtr)\n }\n\n function array_allocation_size_t_string_memory_ptr(length) -> size {\n // Make sure we can allocate memory without overflow\n if gt(length, 0xffffffffffffffff) { panic_error_0x41() }\n\n // round up\n size := and(add(length, 0x1f), not(0x1f))\n\n // add length slot\n size := add(size, 0x20)\n\n }\n\n function cleanup_t_uint256(value) -> cleaned {\n cleaned := value\n }\n\n function cleanup_t_uint8(value) -> cleaned {\n cleaned := and(value, 0xff)\n }\n\n function copy_memory_to_memory(src, dst, length) {\n let i := 0\n for { } lt(i, length) { i := add(i, 32) }\n {\n mstore(add(dst, i), mload(add(src, i)))\n }\n if gt(i, length)\n {\n // clear end\n mstore(add(dst, length), 0)\n }\n }\n\n function extract_byte_array_length(data) -> length {\n length := div(data, 2)\n let outOfPlaceEncoding := and(data, 1)\n if iszero(outOfPlaceEncoding) {\n length := and(length, 0x7f)\n }\n\n if eq(outOfPlaceEncoding, lt(length, 32)) {\n panic_error_0x22()\n }\n }\n\n function panic_error_0x22() {\n mstore(0, 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"nodeType": "YulFunctionCall", "src": "7764:35:2" } ], "functionName": { "name": "iszero", "nodeType": "YulIdentifier", "src": "7757:6:2" }, "nodeType": "YulFunctionCall", "src": "7757:43:2" }, "nodeType": "YulIf", "src": "7754:2:2" } ] }, "name": "validator_revert_t_address", "nodeType": "YulFunctionDefinition", "parameters": [ { "name": "value", "nodeType": "YulTypedName", "src": "7737:5:2", "type": "" } ], "src": "7701:122:2" }, { "body": { "nodeType": "YulBlock", "src": "7872:79:2", "statements": [ { "body": { "nodeType": "YulBlock", "src": "7929:16:2", "statements": [ { "expression": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "7938:1:2", "type": "", "value": "0" }, { "kind": "number", "nodeType": "YulLiteral", "src": "7941:1:2", "type": "", "value": "0" } ], "functionName": { "name": "revert", "nodeType": "YulIdentifier", "src": "7931:6:2" }, "nodeType": "YulFunctionCall", "src": "7931:12:2" }, "nodeType": "YulExpressionStatement", "src": "7931:12:2" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "value", "nodeType": "YulIdentifier", "src": "7895:5:2" }, { "arguments": [ { "name": "value", "nodeType": "YulIdentifier", "src": "7920:5:2" } ], "functionName": { "name": "cleanup_t_uint256", "nodeType": "YulIdentifier", "src": "7902:17:2" }, "nodeType": "YulFunctionCall", "src": "7902:24:2" } ], "functionName": { "name": "eq", "nodeType": "YulIdentifier", "src": "7892:2:2" }, "nodeType": "YulFunctionCall", "src": "7892:35:2" } ], "functionName": { "name": "iszero", "nodeType": "YulIdentifier", "src": "7885:6:2" }, "nodeType": "YulFunctionCall", "src": "7885:43:2" }, "nodeType": "YulIf", "src": "7882:2:2" } ] }, "name": "validator_revert_t_uint256", "nodeType": "YulFunctionDefinition", "parameters": [ { "name": "value", "nodeType": "YulTypedName", "src": "7865:5:2", "type": "" } ], "src": "7829:122:2" } ] }, "contents": "{\n\n function abi_decode_t_address(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_address(value)\n }\n\n function abi_decode_t_uint256(offset, end) -> value {\n value := calldataload(offset)\n validator_revert_t_uint256(value)\n }\n\n function abi_decode_tuple_t_address(headStart, dataEnd) -> value0 {\n if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_addresst_address(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 32\n\n value1 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_addresst_addresst_uint256(headStart, dataEnd) -> value0, value1, value2 {\n if slt(sub(dataEnd, headStart), 96) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 32\n\n value1 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 64\n\n value2 := abi_decode_t_uint256(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_decode_tuple_t_addresst_uint256(headStart, dataEnd) -> value0, value1 {\n if slt(sub(dataEnd, headStart), 64) { revert(0, 0) }\n\n {\n\n let offset := 0\n\n value0 := abi_decode_t_address(add(headStart, offset), dataEnd)\n }\n\n {\n\n let offset := 32\n\n value1 := abi_decode_t_uint256(add(headStart, offset), dataEnd)\n }\n\n }\n\n function abi_encode_t_bool_to_t_bool_fromStack(value, pos) {\n mstore(pos, cleanup_t_bool(value))\n }\n\n function abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_fromStack(value, pos) -> end {\n let length := array_length_t_string_memory_ptr(value)\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, length)\n copy_memory_to_memory(add(value, 0x20), pos, length)\n end := add(pos, round_up_to_mul_of_32(length))\n }\n\n function abi_encode_t_stringliteral_1585781bcea687a18f97b1a94f6f8e11a9041130e156fda9ccf03b1c68f06452_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 47)\n\n mstore(add(pos, 0), \"token balance is lower than the \")\n\n mstore(add(pos, 32), \"value requested\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_stringliteral_d8d39484df698fe59d78d2031639e610e556bf68a0e1f7af4e968ff763a96c6a_to_t_string_memory_ptr_fromStack(pos) -> end {\n pos := array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, 57)\n\n mstore(add(pos, 0), \"token balance or allowance is lo\")\n\n mstore(add(pos, 32), \"wer than amount requested\")\n\n end := add(pos, 64)\n }\n\n function abi_encode_t_uint256_to_t_uint256_fromStack(value, pos) {\n mstore(pos, cleanup_t_uint256(value))\n }\n\n function abi_encode_t_uint8_to_t_uint8_fromStack(value, pos) {\n mstore(pos, cleanup_t_uint8(value))\n }\n\n function abi_encode_tuple_t_bool__to_t_bool__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_bool_to_t_bool_fromStack(value0, add(headStart, 0))\n\n }\n\n function abi_encode_tuple_t_string_memory_ptr__to_t_string_memory_ptr__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_string_memory_ptr_to_t_string_memory_ptr_fromStack(value0, tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_1585781bcea687a18f97b1a94f6f8e11a9041130e156fda9ccf03b1c68f06452__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_1585781bcea687a18f97b1a94f6f8e11a9041130e156fda9ccf03b1c68f06452_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_stringliteral_d8d39484df698fe59d78d2031639e610e556bf68a0e1f7af4e968ff763a96c6a__to_t_string_memory_ptr__fromStack_reversed(headStart ) -> tail {\n tail := add(headStart, 32)\n\n mstore(add(headStart, 0), sub(tail, headStart))\n tail := abi_encode_t_stringliteral_d8d39484df698fe59d78d2031639e610e556bf68a0e1f7af4e968ff763a96c6a_to_t_string_memory_ptr_fromStack( tail)\n\n }\n\n function abi_encode_tuple_t_uint256__to_t_uint256__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_uint256_to_t_uint256_fromStack(value0, add(headStart, 0))\n\n }\n\n function abi_encode_tuple_t_uint8__to_t_uint8__fromStack_reversed(headStart , value0) -> tail {\n tail := add(headStart, 32)\n\n abi_encode_t_uint8_to_t_uint8_fromStack(value0, add(headStart, 0))\n\n }\n\n function array_length_t_string_memory_ptr(value) -> length {\n\n length := mload(value)\n\n }\n\n function array_storeLengthForEncoding_t_string_memory_ptr_fromStack(pos, length) -> updated_pos {\n mstore(pos, length)\n updated_pos := add(pos, 0x20)\n }\n\n function checked_add_t_uint256(x, y) -> sum {\n x := cleanup_t_uint256(x)\n y := cleanup_t_uint256(y)\n\n // overflow, if x > (maxValue - y)\n if gt(x, sub(0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff, y)) { panic_error_0x11() }\n\n sum := add(x, y)\n }\n\n function checked_sub_t_uint256(x, y) -> diff {\n x := cleanup_t_uint256(x)\n y := cleanup_t_uint256(y)\n\n if lt(x, y) { panic_error_0x11() }\n\n diff := sub(x, y)\n }\n\n function cleanup_t_address(value) -> cleaned {\n cleaned := cleanup_t_uint160(value)\n }\n\n function cleanup_t_bool(value) -> cleaned {\n cleaned := iszero(iszero(value))\n }\n\n function cleanup_t_uint160(value) -> cleaned {\n cleaned := and(value, 0xffffffffffffffffffffffffffffffffffffffff)\n }\n\n function cleanup_t_uint256(value) -> cleaned {\n cleaned := value\n }\n\n function cleanup_t_uint8(value) -> cleaned {\n cleaned := and(value, 0xff)\n }\n\n function copy_memory_to_memory(src, dst, length) {\n let i := 0\n for { } lt(i, length) { i := add(i, 32) }\n {\n mstore(add(dst, i), mload(add(src, i)))\n }\n if gt(i, length)\n {\n // clear end\n mstore(add(dst, length), 0)\n }\n }\n\n function extract_byte_array_length(data) -> length {\n length := div(data, 2)\n let outOfPlaceEncoding := and(data, 1)\n if iszero(outOfPlaceEncoding) {\n length := and(length, 0x7f)\n }\n\n if eq(outOfPlaceEncoding, lt(length, 32)) {\n panic_error_0x22()\n }\n }\n\n function panic_error_0x11() {\n mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n mstore(4, 0x11)\n revert(0, 0x24)\n }\n\n function panic_error_0x22() {\n mstore(0, 35408467139433450592217433187231851964531694900788300625387963629091585785856)\n mstore(4, 0x22)\n revert(0, 0x24)\n }\n\n function round_up_to_mul_of_32(value) -> result {\n result := and(add(value, 31), not(31))\n }\n\n function validator_revert_t_address(value) {\n if iszero(eq(value, cleanup_t_address(value))) { revert(0, 0) }\n }\n\n function validator_revert_t_uint256(value) {\n if iszero(eq(value, cleanup_t_uint256(value))) { revert(0, 0) }\n }\n\n}\n", "id": 2, "language": "Yul", "name": "#utility.yul" } ], "sourceMap": 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"source": "// https://eips.ethereum.org/EIPS/eip-20\n// SPDX-License-Identifier: MIT\npragma solidity ^0.8.0;\n\n/**\n * @dev Collection of functions related to the address type\n */\nlibrary Address {\n /**\n * @dev Returns true if `account` is a contract.\n *\n * [IMPORTANT]\n * ====\n * It is unsafe to assume that an address for which this function returns\n * false is an externally-owned account (EOA) and not a contract.\n *\n * Among others, `isContract` will return false for the following\n * types of addresses:\n *\n * - an externally-owned account\n * - a contract in construction\n * - an address where a contract will be created\n * - an address where a contract lived, but was destroyed\n * ====\n */\n function isContract(address account) internal view returns (bool) {\n // This method relies on extcodesize, which returns 0 for contracts in\n // construction, since the code is only stored at the end of the\n // constructor execution.\n\n uint256 size;\n // solhint-disable-next-line no-inline-assembly\n assembly { size := extcodesize(account) }\n return size > 0;\n }\n\n /**\n * @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n * `recipient`, forwarding all available gas and reverting on errors.\n *\n * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n * of certain opcodes, possibly making contracts go over the 2300 gas limit\n * imposed by `transfer`, making them unable to receive funds via\n * `transfer`. {sendValue} removes this limitation.\n *\n * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n *\n * IMPORTANT: because control is transferred to `recipient`, care must be\n * taken to not create reentrancy vulnerabilities. Consider using\n * {ReentrancyGuard} or the\n * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].\n */\n function sendValue(address payable recipient, uint256 amount) internal {\n require(address(this).balance >= amount, \"Address: insufficient balance\");\n\n // solhint-disable-next-line avoid-low-level-calls, avoid-call-value\n (bool success, ) = recipient.call{ value: amount }(\"\");\n require(success, \"Address: unable to send value, recipient may have reverted\");\n }\n\n /**\n * @dev Performs a Solidity function call using a low level `call`. A\n * plain`call` is an unsafe replacement for a function call: use this\n * function instead.\n *\n * If `target` reverts with a revert reason, it is bubbled up by this\n * function (like regular Solidity function calls).\n *\n * Returns the raw returned data. To convert to the expected return value,\n * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n *\n * Requirements:\n *\n * - `target` must be a contract.\n * - calling `target` with `data` must not revert.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionCall(target, data, \"Address: low-level call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n * `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n return functionCallWithValue(target, data, 0, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but also transferring `value` wei to `target`.\n *\n * Requirements:\n *\n * - the calling contract must have an ETH balance of at least `value`.\n * - the called Solidity function must be `payable`.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {\n return functionCallWithValue(target, data, value, \"Address: low-level call with value failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but\n * with `errorMessage` as a fallback revert reason when `target` reverts.\n *\n * _Available since v3.1._\n */\n function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {\n require(address(this).balance >= value, \"Address: insufficient balance for call\");\n require(isContract(target), \"Address: call to non-contract\");\n\n // solhint-disable-next-line avoid-low-level-calls\n (bool success, bytes memory returndata) = target.call{ value: value }(data);\n return _verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {\n return functionStaticCall(target, data, \"Address: low-level static call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a static call.\n *\n * _Available since v3.3._\n */\n function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {\n require(isContract(target), \"Address: static call to non-contract\");\n\n // solhint-disable-next-line avoid-low-level-calls\n (bool success, bytes memory returndata) = target.staticcall(data);\n return _verifyCallResult(success, returndata, errorMessage);\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {\n return functionDelegateCall(target, data, \"Address: low-level delegate call failed\");\n }\n\n /**\n * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],\n * but performing a delegate call.\n *\n * _Available since v3.4._\n */\n function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {\n require(isContract(target), \"Address: delegate call to non-contract\");\n\n // solhint-disable-next-line avoid-low-level-calls\n (bool success, bytes memory returndata) = target.delegatecall(data);\n return _verifyCallResult(success, returndata, errorMessage);\n }\n\n function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {\n if (success) {\n return returndata;\n } else {\n // Look for revert reason and bubble it up if present\n if (returndata.length > 0) {\n // The easiest way to bubble the revert reason is using memory via assembly\n\n // solhint-disable-next-line no-inline-assembly\n assembly {\n let returndata_size := mload(returndata)\n revert(add(32, returndata), returndata_size)\n }\n } else {\n revert(errorMessage);\n }\n }\n }\n}\n\n/**\n * @dev Interface of the ERC20 standard as defined in the EIP.\n */\ninterface IERC20 {\n /**\n * @dev Returns the amount of tokens in existence.\n */\n function totalSupply() external view returns (uint256);\n\n /**\n * @dev Returns the amount of tokens owned by `account`.\n */\n function balanceOf(address account) external view returns (uint256);\n\n /**\n * @dev Moves `amount` tokens from the caller's account to `recipient`.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transfer(address recipient, uint256 amount) external returns (bool);\n\n /**\n * @dev Returns the remaining number of tokens that `spender` will be\n * allowed to spend on behalf of `owner` through {transferFrom}. This is\n * zero by default.\n *\n * This value changes when {approve} or {transferFrom} are called.\n */\n function allowance(address owner, address spender) external view returns (uint256);\n\n /**\n * @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * IMPORTANT: Beware that changing an allowance with this method brings the risk\n * that someone may use both the old and the new allowance by unfortunate\n * transaction ordering. One possible solution to mitigate this race\n * condition is to first reduce the spender's allowance to 0 and set the\n * desired value afterwards:\n * https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n *\n * Emits an {Approval} event.\n */\n function approve(address spender, uint256 amount) external returns (bool);\n\n /**\n * @dev Moves `amount` tokens from `sender` to `recipient` using the\n * allowance mechanism. `amount` is then deducted from the caller's\n * allowance.\n *\n * Returns a boolean value indicating whether the operation succeeded.\n *\n * Emits a {Transfer} event.\n */\n function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);\n\n /**\n * @dev Emitted when `value` tokens are moved from one account (`from`) to\n * another (`to`).\n *\n * Note that `value` may be zero.\n */\n event Transfer(address indexed from, address indexed to, uint256 value);\n\n /**\n * @dev Emitted when the allowance of a `spender` for an `owner` is set by\n * a call to {approve}. `value` is the new allowance.\n */\n event Approval(address indexed owner, address indexed spender, uint256 value);\n}\n\n/**\n * @title SafeERC20\n * @dev Wrappers around ERC20 operations that throw on failure (when the token\n * contract returns false). Tokens that return no value (and instead revert or\n * throw on failure) are also supported, non-reverting calls are assumed to be\n * successful.\n * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.\n */\nlibrary SafeERC20 {\n using Address for address;\n\n function safeTransfer(IERC20 token, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));\n }\n\n function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {\n _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));\n }\n\n /**\n * @dev Deprecated. This function has issues similar to the ones found in\n * {IERC20-approve}, and its usage is discouraged.\n *\n * Whenever possible, use {safeIncreaseAllowance} and\n * {safeDecreaseAllowance} instead.\n */\n function safeApprove(IERC20 token, address spender, uint256 value) internal {\n // safeApprove should only be called when setting an initial allowance,\n // or when resetting it to zero. To increase and decrease it, use\n // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'\n // solhint-disable-next-line max-line-length\n require((value == 0) || (token.allowance(address(this), spender) == 0),\n \"SafeERC20: approve from non-zero to non-zero allowance\"\n );\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));\n }\n\n function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 newAllowance = token.allowance(address(this), spender) + value;\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {\n uint256 oldAllowance = token.allowance(address(this), spender);\n require(oldAllowance >= value, \"SafeERC20: decreased allowance below zero\");\n uint256 newAllowance = oldAllowance - value;\n _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));\n }\n\n /**\n * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n * on the return value: the return value is optional (but if data is returned, it must not be false).\n * @param token The token targeted by the call.\n * @param data The call data (encoded using abi.encode or one of its variants).\n */\n function _callOptionalReturn(IERC20 token, bytes memory data) private {\n // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since\n // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that\n // the target address contains contract code and also asserts for success in the low-level call.\n\n bytes memory returndata = address(token).functionCall(data, \"SafeERC20: low-level call failed\");\n if (returndata.length > 0) { // Return data is optional\n // solhint-disable-next-line max-line-length\n require(abi.decode(returndata, (bool)), \"SafeERC20: ERC20 operation did not succeed\");\n }\n }\n}\ninterface iToken {\n\n /// @param _owner The address from which the balance will be retrieved\n /// @return balance the balance\n function balanceOf(address _owner) external view returns (uint256 balance);\n\n /// @notice send `_value` token to `_to` from `msg.sender`\n /// @param _to The address of the recipient\n /// @param _value The amount of token to be transferred\n /// @return success Whether the transfer was successful or not\n function transfer(address _to, uint256 _value) external returns (bool success);\n\n /// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`\n /// @param _from The address of the sender\n /// @param _to The address of the recipient\n /// @param _value The amount of token to be transferred\n /// @return success Whether the transfer was successful or not\n function transferFrom(address _from, address _to, uint256 _value) external returns (bool success);\n\n /// @notice `msg.sender` approves `_addr` to spend `_value` tokens\n /// @param _spender The address of the account able to transfer the tokens\n /// @param _value The amount of wei to be approved for transfer\n /// @return success Whether the approval was successful or not\n function approve(address _spender , uint256 _value) external returns (bool success);\n\n /// @param _owner The address of the account owning tokens\n /// @param _spender The address of the account able to transfer the tokens\n /// @return remaining Amount of remaining tokens allowed to spent\n function allowance(address _owner, address _spender) external view returns (uint256 remaining);\n\n event Transfer(address indexed _from, address indexed _to, uint256 _value);\n event Approval(address indexed _owner, address indexed _spender, uint256 _value);\n}\n\ncontract Test_Token is iToken {\n using SafeERC20 for iToken;\n\n uint256 constant private MAX_UINT256 = 2**256 - 1;\n mapping (address => uint256) public balances;\n mapping (address => mapping (address => uint256)) public allowed;\n uint256 public totalSupply;\n /*\n NOTE:\n The following variables are OPTIONAL vanities. One does not have to include them.\n They allow one to customise the token contract & in no way influences the core functionality.\n Some wallets/interfaces might not even bother to look at this information.\n */\n string public name; //fancy name: eg Simon Bucks\n uint8 public decimals; //How many decimals to show.\n string public symbol; //An identifier: eg SBX\n\n constructor(uint256 _initialAmount, string memory _tokenName, uint8 _decimalUnits, string memory _tokenSymbol) {\n balances[msg.sender] = _initialAmount; // Give the creator all initial tokens\n totalSupply = _initialAmount; // Update total supply\n name = _tokenName; // Set the name for display purposes\n decimals = _decimalUnits; // Amount of decimals for display purposes\n symbol = _tokenSymbol; // Set the symbol for display purposes\n }\n\n function transfer(address _to, uint256 _value) public override returns (bool success) {\n require(balances[msg.sender] >= _value, \"token balance is lower than the value 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"referencedDeclaration": 57, "src": "2372:6:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "src": "2349:31:1", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$value", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 78, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2349:35:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "2330:54:1" }, { "expression": { "arguments": [ { "id": 81, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 72, "src": "2402:7:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "416464726573733a20756e61626c6520746f2073656e642076616c75652c20726563697069656e74206d61792068617665207265766572746564", "id": 82, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2411:60:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" }, "value": "Address: unable to send value, recipient may have reverted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" } ], "id": 80, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "2394:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 83, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2394:78:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 84, "nodeType": "ExpressionStatement", "src": "2394:78:1" } ] }, "documentation": { "id": 53, "nodeType": "StructuredDocumentation", "src": "1177:906:1", "text": " @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n `recipient`, forwarding all available gas and reverting on errors.\n https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n of certain opcodes, possibly making contracts go over the 2300 gas limit\n imposed by `transfer`, making them unable to receive funds via\n `transfer`. {sendValue} removes this limitation.\n https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n IMPORTANT: because control is transferred to `recipient`, care must be\n taken to not create reentrancy vulnerabilities. Consider using\n {ReentrancyGuard} or the\n https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]." }, "id": 86, "implemented": true, "kind": "function", "modifiers": [], "name": "sendValue", "nodeType": "FunctionDefinition", "parameters": { "id": 58, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 55, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "scope": 86, "src": "2107:25:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, "typeName": { "id": 54, "name": "address", "nodeType": "ElementaryTypeName", "src": "2107:15:1", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "visibility": "internal" }, { "constant": false, "id": 57, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 86, "src": "2134:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 56, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2134:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2106:43:1" }, "returnParameters": { "id": 59, "nodeType": "ParameterList", "parameters": [], "src": "2159:0:1" }, "scope": 328, "src": "2088:391:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 102, "nodeType": "Block", "src": "3309:82:1", "statements": [ { "expression": { "arguments": [ { "id": 97, "name": "target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 89, "src": "3337:6:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 98, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 91, "src": "3345:4:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "hexValue": "416464726573733a206c6f772d6c6576656c2063616c6c206661696c6564", "id": 99, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3351:32:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_24d7ab5d382116e64324f19950ca9340b8af1ddeb09a8d026e0a3c6a01dcc9df", "typeString": "literal_string \"Address: low-level call failed\"" }, "value": "Address: low-level call failed" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_stringliteral_24d7ab5d382116e64324f19950ca9340b8af1ddeb09a8d026e0a3c6a01dcc9df", "typeString": "literal_string \"Address: low-level call failed\"" } ], "id": 96, "name": "functionCall", "nodeType": "Identifier", "overloadedDeclarations": [ 103, 123 ], "referencedDeclaration": 123, "src": "3324:12:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_bytes_memory_ptr_$_t_string_memory_ptr_$returns$_t_bytes_memory_ptr_$", "typeString": "function (address,bytes memory,string memory) returns (bytes memory)" } }, "id": 100, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3324:60:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 95, "id": 101, "nodeType": "Return", "src": "3317:67:1" } ] }, "documentation": { "id": 87, "nodeType": "StructuredDocumentation", "src": "2485:730:1", "text": " @dev Performs a Solidity function call using a low level `call`. A\n plain`call` is an unsafe replacement for a function call: use this\n function instead.\n If `target` reverts with a revert reason, it is bubbled up by this\n function (like regular Solidity function calls).\n Returns the raw returned data. To convert to the expected return value,\n use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n Requirements:\n - `target` must be a contract.\n - calling `target` with `data` must not revert.\n _Available since v3.1._" }, "id": 103, "implemented": true, "kind": "function", "modifiers": [], "name": "functionCall", "nodeType": "FunctionDefinition", "parameters": { "id": 92, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 89, "mutability": "mutable", "name": "target", "nodeType": "VariableDeclaration", "scope": 103, "src": "3242:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 88, "name": "address", "nodeType": "ElementaryTypeName", "src": "3242:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 91, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 103, "src": "3258:17:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 90, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3258:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3241:35:1" }, "returnParameters": { "id": 95, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 94, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 103, "src": "3295:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 93, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3295:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3294:14:1" }, "scope": 328, "src": "3220:171:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 122, "nodeType": "Block", "src": "3730:76:1", "statements": [ { "expression": { "arguments": [ { "id": 116, "name": "target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 106, "src": "3769:6:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 117, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 108, "src": "3777:4:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "hexValue": "30", "id": 118, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3783:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, { "id": 119, "name": "errorMessage", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 110, "src": "3786:12:1", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } ], "id": 115, "name": "functionCallWithValue", "nodeType": "Identifier", "overloadedDeclarations": [ 143, 193 ], "referencedDeclaration": 193, "src": "3747:21:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_bytes_memory_ptr_$_t_uint256_$_t_string_memory_ptr_$returns$_t_bytes_memory_ptr_$", "typeString": "function (address,bytes memory,uint256,string memory) returns (bytes memory)" } }, "id": 120, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3747:52:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 114, "id": 121, "nodeType": "Return", "src": "3740:59:1" } ] }, "documentation": { "id": 104, "nodeType": "StructuredDocumentation", "src": "3397:211:1", "text": " @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n `errorMessage` as a fallback revert reason when `target` reverts.\n _Available since v3.1._" }, "id": 123, "implemented": true, "kind": "function", "modifiers": [], "name": "functionCall", "nodeType": "FunctionDefinition", "parameters": { "id": 111, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 106, "mutability": "mutable", "name": "target", "nodeType": "VariableDeclaration", "scope": 123, "src": "3635:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 105, "name": "address", "nodeType": "ElementaryTypeName", "src": "3635:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 108, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 123, "src": "3651:17:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 107, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3651:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 110, "mutability": "mutable", "name": "errorMessage", "nodeType": "VariableDeclaration", "scope": 123, "src": "3670:26:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 109, "name": "string", "nodeType": "ElementaryTypeName", "src": "3670:6:1", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "3634:63:1" }, "returnParameters": { "id": 114, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 113, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 123, "src": "3716:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 112, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3716:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3715:14:1" }, "scope": 328, "src": "3613:193:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 142, "nodeType": "Block", "src": "4281:111:1", "statements": [ { "expression": { "arguments": [ { "id": 136, "name": "target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 126, "src": "4320:6:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 137, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 128, "src": "4328:4:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "id": 138, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 130, "src": "4334:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "hexValue": "416464726573733a206c6f772d6c6576656c2063616c6c20776974682076616c7565206661696c6564", "id": 139, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4341:43:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_88a4a0b5e975840320a0475d4027005235904fdb5ece94df156f3d717cb2dbfc", "typeString": "literal_string \"Address: low-level call with value failed\"" }, "value": "Address: low-level call with value failed" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_88a4a0b5e975840320a0475d4027005235904fdb5ece94df156f3d717cb2dbfc", "typeString": "literal_string \"Address: low-level call with value failed\"" } ], "id": 135, "name": "functionCallWithValue", "nodeType": "Identifier", "overloadedDeclarations": [ 143, 193 ], "referencedDeclaration": 193, "src": "4298:21:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_bytes_memory_ptr_$_t_uint256_$_t_string_memory_ptr_$returns$_t_bytes_memory_ptr_$", "typeString": "function (address,bytes memory,uint256,string memory) returns (bytes memory)" } }, "id": 140, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4298:87:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 134, "id": 141, "nodeType": "Return", "src": "4291:94:1" } ] }, "documentation": { "id": 124, "nodeType": "StructuredDocumentation", "src": "3812:351:1", "text": " @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],\n but also transferring `value` wei to `target`.\n Requirements:\n - the calling contract must have an ETH balance of at least `value`.\n - the called Solidity function must be `payable`.\n _Available since v3.1._" }, "id": 143, "implemented": true, "kind": "function", "modifiers": [], "name": "functionCallWithValue", "nodeType": "FunctionDefinition", "parameters": { "id": 131, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 126, "mutability": "mutable", "name": "target", "nodeType": "VariableDeclaration", "scope": 143, "src": "4199:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 125, "name": "address", "nodeType": "ElementaryTypeName", "src": "4199:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 128, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 143, "src": "4215:17:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 127, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4215:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 130, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 143, "src": "4234:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 129, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "4234:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "4198:50:1" }, "returnParameters": { "id": 134, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 133, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 143, "src": "4267:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 132, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4267:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "4266:14:1" }, "scope": 328, "src": "4168:224:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 192, "nodeType": "Block", "src": "4781:382:1", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": 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"linearizedBaseContracts": [ 404 ], "name": "IERC20", "nodeType": "ContractDefinition", "nodes": [ { "documentation": { "id": 330, "nodeType": "StructuredDocumentation", "src": "7946:66:1", "text": " @dev Returns the amount of tokens in existence." }, "functionSelector": "18160ddd", "id": 335, "implemented": false, "kind": "function", "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "parameters": { "id": 331, "nodeType": "ParameterList", "parameters": [], "src": "8037:2:1" }, "returnParameters": { "id": 334, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 333, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 335, "src": "8063:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 332, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8063:7:1", "typeDescriptions": { "typeIdentifier": 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"typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "8173:17:1" }, "returnParameters": { "id": 342, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 341, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 343, "src": "8214:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 340, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8214:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "8213:9:1" }, "scope": 404, "src": "8155:68:1", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "documentation": { "id": 344, "nodeType": "StructuredDocumentation", "src": "8229:209:1", "text": " @dev Moves `amount` tokens from the caller's account to `recipient`.\n Returns a boolean value indicating whether the operation succeeded.\n Emits a {Transfer} event." }, "functionSelector": "a9059cbb", "id": 353, "implemented": false, "kind": "function", "modifiers": [], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 349, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 346, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "scope": 353, "src": "8461:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 345, "name": "address", "nodeType": "ElementaryTypeName", "src": "8461:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 348, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 353, "src": "8480:14:1", 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"virtual": false, "visibility": "external" }, { "documentation": { "id": 354, "nodeType": "StructuredDocumentation", "src": "8526:264:1", "text": " @dev Returns the remaining number of tokens that `spender` will be\n allowed to spend on behalf of `owner` through {transferFrom}. This is\n zero by default.\n This value changes when {approve} or {transferFrom} are called." }, "functionSelector": "dd62ed3e", "id": 363, "implemented": false, "kind": "function", "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 359, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 356, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 363, "src": "8814:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 355, "name": "address", "nodeType": "ElementaryTypeName", "src": "8814:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 358, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 363, "src": "8829:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 357, "name": "address", "nodeType": "ElementaryTypeName", "src": "8829:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "8813:32:1" }, "returnParameters": { "id": 362, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 361, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 363, "src": "8869:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 360, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8869:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "8868:9:1" }, "scope": 404, "src": "8795:83:1", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "documentation": { "id": 364, "nodeType": "StructuredDocumentation", "src": "8884:642:1", "text": " @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n Returns a boolean value indicating whether the operation succeeded.\n IMPORTANT: Beware that changing an allowance with this method brings the risk\n that someone may use both the old and the new allowance by unfortunate\n transaction ordering. One possible solution to mitigate this race\n condition is to first reduce the spender's allowance to 0 and set the\n desired value afterwards:\n https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n Emits an {Approval} event." }, "functionSelector": "095ea7b3", "id": 373, "implemented": false, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 369, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 366, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 373, "src": "9548:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 365, "name": "address", "nodeType": "ElementaryTypeName", "src": "9548:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 368, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 373, "src": "9565:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 367, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9565:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "9547:33:1" }, "returnParameters": { "id": 372, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 371, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 373, "src": "9599:4:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 370, "name": "bool", "nodeType": "ElementaryTypeName", "src": "9599:4:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "9598:6:1" }, "scope": 404, "src": "9531:74:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "documentation": { "id": 374, "nodeType": "StructuredDocumentation", "src": "9611:296:1", "text": " @dev Moves `amount` tokens from `sender` to `recipient` using the\n allowance mechanism. `amount` is then deducted from the caller's\n allowance.\n Returns a boolean value indicating whether the operation succeeded.\n Emits a {Transfer} event." }, "functionSelector": "23b872dd", "id": 385, "implemented": false, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 381, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 376, "mutability": "mutable", "name": "sender", "nodeType": "VariableDeclaration", "scope": 385, "src": "9934:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 375, "name": "address", "nodeType": "ElementaryTypeName", "src": "9934:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 378, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "scope": 385, "src": "9950:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 377, "name": "address", "nodeType": "ElementaryTypeName", "src": "9950:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 380, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 385, "src": "9969:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 379, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "9969:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "9933:51:1" }, "returnParameters": { "id": 384, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 383, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 385, "src": "10003:4:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 382, "name": "bool", "nodeType": "ElementaryTypeName", "src": "10003:4:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "10002:6:1" }, "scope": 404, "src": "9912:97:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "anonymous": false, "documentation": { "id": 386, "nodeType": "StructuredDocumentation", "src": "10015:158:1", "text": " @dev Emitted when `value` tokens are moved from one account (`from`) to\n another (`to`).\n Note that `value` may be zero." }, "id": 394, "name": "Transfer", "nodeType": "EventDefinition", "parameters": { "id": 393, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 388, "indexed": true, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 394, "src": "10193:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 387, "name": "address", "nodeType": "ElementaryTypeName", "src": "10193:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 390, "indexed": true, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 394, "src": "10215:18:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 389, "name": "address", "nodeType": "ElementaryTypeName", "src": "10215:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 392, "indexed": false, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 394, "src": "10235:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 391, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10235:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "10192:57:1" }, "src": "10178:72:1" }, { "anonymous": false, "documentation": { "id": 395, "nodeType": "StructuredDocumentation", "src": "10256:148:1", "text": " @dev Emitted when the allowance of a `spender` for an `owner` is set by\n a call to {approve}. `value` is the new allowance." }, "id": 403, "name": "Approval", "nodeType": "EventDefinition", "parameters": { "id": 402, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 397, "indexed": true, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 403, "src": "10424:21:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 396, "name": "address", "nodeType": "ElementaryTypeName", "src": "10424:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 399, "indexed": true, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 403, "src": "10447:23:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 398, "name": "address", "nodeType": "ElementaryTypeName", "src": "10447:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 401, "indexed": false, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 403, "src": "10472:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 400, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10472:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "10423:63:1" }, "src": "10409:78:1" } ], "scope": 929, "src": "7923:2566:1" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 405, "nodeType": "StructuredDocumentation", "src": "10491:457:1", "text": " @title SafeERC20\n @dev Wrappers around ERC20 operations that throw on failure (when the token\n contract returns false). Tokens that return no value (and instead revert or\n throw on failure) are also supported, non-reverting calls are assumed to be\n successful.\n To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n which allows you to call the safe operations as `token.safeTransfer(...)`, etc." }, "fullyImplemented": true, "id": 623, "linearizedBaseContracts": [ 623 ], "name": "SafeERC20", "nodeType": "ContractDefinition", "nodes": [ { "id": 408, "libraryName": { "id": 406, "name": "Address", "nodeType": "IdentifierPath", "referencedDeclaration": 328, "src": "10979:7:1" }, "nodeType": "UsingForDirective", "src": "10973:26:1", "typeName": { "id": 407, "name": "address", "nodeType": "ElementaryTypeName", "src": "10991:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "body": { "id": 430, "nodeType": "Block", "src": "11077:103:1", "statements": [ { "expression": { "arguments": [ { "id": 419, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 411, "src": "11107:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 422, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 411, "src": "11137:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 423, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transfer", "nodeType": "MemberAccess", "referencedDeclaration": 353, "src": "11137:14:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 424, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "11137:23:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 425, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 413, "src": "11162:2:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 426, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 415, "src": "11166:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 420, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "11114:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 421, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "11114:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 427, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11114:58:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 418, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "11087:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 428, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11087:86:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 429, "nodeType": "ExpressionStatement", "src": "11087:86:1" } ] }, "id": 431, "implemented": true, "kind": "function", "modifiers": [], "name": "safeTransfer", "nodeType": "FunctionDefinition", "parameters": { "id": 416, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 411, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 431, "src": "11027:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 410, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 409, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "11027:6:1" }, "referencedDeclaration": 404, "src": "11027:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 413, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 431, "src": "11041:10:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 412, "name": "address", "nodeType": "ElementaryTypeName", "src": "11041:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 415, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 431, "src": "11053:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 414, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11053:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "11026:41:1" }, "returnParameters": { "id": 417, "nodeType": "ParameterList", "parameters": [], "src": "11077:0:1" }, "scope": 623, "src": "11005:175:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 456, "nodeType": "Block", "src": "11276:113:1", "statements": [ { "expression": { "arguments": [ { "id": 444, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 434, "src": "11306:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 447, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 434, "src": "11336:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 448, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transferFrom", "nodeType": "MemberAccess", "referencedDeclaration": 385, "src": "11336:18:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,address,uint256) external returns (bool)" } }, "id": 449, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "11336:27:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 450, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 436, "src": "11365:4:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 451, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 438, "src": "11371:2:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 452, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 440, "src": "11375:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 445, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "11313:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 446, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "11313:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 453, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11313:68:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 443, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "11286:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 454, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11286:96:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 455, "nodeType": "ExpressionStatement", "src": "11286:96:1" } ] }, "id": 457, "implemented": true, "kind": "function", "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 441, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 434, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 457, "src": "11212:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 433, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 432, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "11212:6:1" }, "referencedDeclaration": 404, "src": "11212:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 436, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 457, "src": "11226:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 435, "name": "address", "nodeType": "ElementaryTypeName", "src": "11226:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 438, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 457, "src": "11240:10:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 437, "name": "address", "nodeType": "ElementaryTypeName", "src": "11240:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 440, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 457, "src": "11252:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 439, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11252:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "11211:55:1" }, "returnParameters": { "id": 442, "nodeType": "ParameterList", "parameters": [], "src": "11276:0:1" }, "scope": 623, "src": "11186:203:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 500, "nodeType": "Block", "src": "11725:537:1", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 484, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 471, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 469, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 465, "src": "12014:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 470, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "12023:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "12014:10:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 472, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "12013:12:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 482, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "arguments": [ { "id": 477, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967268, "src": "12054:4:1", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } ], "id": 476, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "12046:7:1", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 475, "name": "address", "nodeType": "ElementaryTypeName", "src": "12046:7:1", "typeDescriptions": {} } }, "id": 478, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12046:13:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 479, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 463, "src": "12061:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 473, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 461, "src": "12030:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 474, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "allowance", "nodeType": "MemberAccess", "referencedDeclaration": 363, "src": "12030:15:1", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_address_$_t_address_$returns$_t_uint256_$", "typeString": "function (address,address) view external returns (uint256)" } }, "id": 480, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12030:39:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 481, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "12073:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "12030:44:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 483, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "12029:46:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "12013:62:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "5361666545524332303a20617070726f76652066726f6d206e6f6e2d7a65726f20746f206e6f6e2d7a65726f20616c6c6f77616e6365", "id": 485, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "12089:56:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_ef945ddb1bfdc0da870feb4560d868b047642b4ac7f2fb7f8b7c51cb4a411e25", "typeString": "literal_string \"SafeERC20: approve from non-zero to non-zero allowance\"" }, "value": "SafeERC20: approve from non-zero to non-zero allowance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_ef945ddb1bfdc0da870feb4560d868b047642b4ac7f2fb7f8b7c51cb4a411e25", "typeString": "literal_string \"SafeERC20: approve from non-zero to non-zero allowance\"" } ], "id": 468, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "12005:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 486, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12005:150:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 487, "nodeType": "ExpressionStatement", "src": "12005:150:1" }, { "expression": { "arguments": [ { "id": 489, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 461, "src": "12185:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 492, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 461, "src": "12215:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 493, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "approve", "nodeType": "MemberAccess", "referencedDeclaration": 373, "src": "12215:13:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 494, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "12215:22:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 495, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 463, "src": "12239:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 496, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 465, "src": "12248:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 490, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "12192:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 491, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "12192:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 497, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12192:62:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 488, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "12165:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 498, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12165:90:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 499, "nodeType": "ExpressionStatement", "src": "12165:90:1" } ] }, "documentation": { "id": 458, "nodeType": "StructuredDocumentation", "src": "11395:249:1", "text": " @dev Deprecated. This function has issues similar to the ones found in\n {IERC20-approve}, and its usage is discouraged.\n Whenever possible, use {safeIncreaseAllowance} and\n {safeDecreaseAllowance} instead." }, "id": 501, "implemented": true, "kind": "function", "modifiers": [], "name": "safeApprove", "nodeType": "FunctionDefinition", "parameters": { "id": 466, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 461, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 501, "src": "11670:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 460, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 459, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "11670:6:1" }, "referencedDeclaration": 404, "src": "11670:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 463, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 501, "src": "11684:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 462, "name": "address", "nodeType": "ElementaryTypeName", "src": "11684:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 465, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 501, "src": "11701:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 464, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11701:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "11669:46:1" }, "returnParameters": { "id": 467, "nodeType": "ParameterList", "parameters": [], "src": "11725:0:1" }, "scope": 623, "src": "11649:613:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 536, "nodeType": "Block", "src": "12354:194:1", "statements": [ { "assignments": [ 512 ], "declarations": [ { "constant": false, "id": 512, "mutability": "mutable", "name": "newAllowance", "nodeType": "VariableDeclaration", "scope": 536, "src": "12364:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 511, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12364:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 523, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 522, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "arguments": [ { "id": 517, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967268, "src": "12411:4:1", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } ], "id": 516, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "12403:7:1", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 515, "name": "address", "nodeType": "ElementaryTypeName", "src": "12403:7:1", "typeDescriptions": {} } }, "id": 518, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12403:13:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 519, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 506, "src": "12418:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 513, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 504, "src": "12387:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 514, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "allowance", "nodeType": "MemberAccess", "referencedDeclaration": 363, "src": "12387:15:1", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_address_$_t_address_$returns$_t_uint256_$", "typeString": "function (address,address) view external returns (uint256)" } }, "id": 520, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12387:39:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 521, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 508, "src": "12429:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "12387:47:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "12364:70:1" }, { "expression": { "arguments": [ { "id": 525, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 504, "src": "12464:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 528, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 504, "src": "12494:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 529, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "approve", "nodeType": "MemberAccess", "referencedDeclaration": 373, "src": "12494:13:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 530, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "12494:22:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 531, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 506, "src": "12518:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 532, "name": "newAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 512, "src": "12527:12:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 526, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "12471:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 527, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "12471:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 533, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12471:69:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 524, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "12444:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 534, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12444:97:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 535, "nodeType": "ExpressionStatement", "src": "12444:97:1" } ] }, "id": 537, "implemented": true, "kind": "function", "modifiers": [], "name": "safeIncreaseAllowance", "nodeType": "FunctionDefinition", "parameters": { "id": 509, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 504, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 537, "src": "12299:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 503, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 502, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "12299:6:1" }, "referencedDeclaration": 404, "src": "12299:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 506, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 537, "src": "12313:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 505, "name": "address", "nodeType": "ElementaryTypeName", "src": "12313:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 508, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 537, "src": "12330:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 507, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12330:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "12298:46:1" }, "returnParameters": { "id": 510, "nodeType": "ParameterList", "parameters": [], "src": "12354:0:1" }, "scope": 623, "src": "12268:280:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 583, "nodeType": "Block", "src": "12640:340:1", "statements": [ { "assignments": [ 548 ], "declarations": [ { "constant": false, "id": 548, "mutability": "mutable", "name": "oldAllowance", "nodeType": "VariableDeclaration", "scope": 583, "src": "12654:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 547, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12654:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 557, "initialValue": { "arguments": [ { "arguments": [ { "id": 553, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967268, "src": "12701:4:1", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } ], "id": 552, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "12693:7:1", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 551, "name": "address", "nodeType": "ElementaryTypeName", "src": "12693:7:1", "typeDescriptions": {} } }, "id": 554, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12693:13:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 555, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 542, "src": "12708:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 549, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 540, "src": "12677:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 550, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "allowance", "nodeType": "MemberAccess", "referencedDeclaration": 363, "src": "12677:15:1", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_address_$_t_address_$returns$_t_uint256_$", "typeString": "function (address,address) view external returns (uint256)" } }, "id": 556, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12677:39:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "12654:62:1" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 561, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 559, "name": "oldAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 548, "src": "12738:12:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "id": 560, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 544, "src": "12754:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "12738:21:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "5361666545524332303a2064656372656173656420616c6c6f77616e63652062656c6f77207a65726f", "id": 562, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "12761:43:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_2c3af60974a758b7e72e108c9bf0943ecc9e4f2e8af4695da5f52fbf57a63d3a", "typeString": "literal_string \"SafeERC20: decreased allowance below zero\"" }, "value": "SafeERC20: decreased allowance below zero" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_2c3af60974a758b7e72e108c9bf0943ecc9e4f2e8af4695da5f52fbf57a63d3a", "typeString": "literal_string \"SafeERC20: decreased allowance below zero\"" } ], "id": 558, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "12730:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 563, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12730:75:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 564, "nodeType": "ExpressionStatement", "src": "12730:75:1" }, { "assignments": [ 566 ], "declarations": [ { "constant": false, "id": 566, "mutability": "mutable", "name": "newAllowance", "nodeType": "VariableDeclaration", "scope": 583, "src": "12819:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 565, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12819:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 570, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 569, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 567, "name": "oldAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 548, "src": "12842:12:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "id": 568, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 544, "src": "12857:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "12842:20:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "12819:43:1" }, { "expression": { "arguments": [ { "id": 572, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 540, "src": "12896:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 575, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 540, "src": "12926:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 576, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "approve", "nodeType": "MemberAccess", "referencedDeclaration": 373, "src": "12926:13:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 577, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "12926:22:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 578, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 542, "src": "12950:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 579, "name": "newAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 566, "src": "12959:12:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 573, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "12903:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 574, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "12903:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 580, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12903:69:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 571, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "12876:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": 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call (i.e. a regular function call to a contract), relaxing the requirement\n on the return value: the return value is optional (but if data is returned, it must not be false).\n @param token The token targeted by the call.\n @param data The call data (encoded using abi.encode or one of its variants)." }, "id": 622, "implemented": true, "kind": "function", "modifiers": [], "name": "_callOptionalReturn", "nodeType": "FunctionDefinition", "parameters": { "id": 591, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 588, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 622, "src": "13392:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 587, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 586, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "13392:6:1" }, 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[], "contractDependencies": [], "contractKind": "interface", "fullyImplemented": false, "id": 690, "linearizedBaseContracts": [ 690 ], "name": "iToken", "nodeType": "ContractDefinition", "nodes": [ { "documentation": { "id": 624, "nodeType": "StructuredDocumentation", "src": "14141:106:1", "text": "@param _owner The address from which the balance will be retrieved\n @return balance the balance" }, "functionSelector": "70a08231", "id": 631, "implemented": false, "kind": "function", "modifiers": [], "name": "balanceOf", "nodeType": "FunctionDefinition", "parameters": { "id": 627, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 626, "mutability": "mutable", "name": "_owner", "nodeType": "VariableDeclaration", "scope": 631, "src": "14271:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 625, "name": "address", "nodeType": "ElementaryTypeName", "src": "14271:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "14270:16:1" }, "returnParameters": { "id": 630, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 629, "mutability": "mutable", "name": "balance", "nodeType": "VariableDeclaration", "scope": 631, "src": "14310:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 628, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "14310:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "14309:17:1" }, "scope": 690, "src": "14252:75:1", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "documentation": { "id": 632, "nodeType": "StructuredDocumentation", "src": "14333:233:1", "text": "@notice send `_value` token to `_to` from `msg.sender`\n @param _to The address of the recipient\n @param _value The amount of token to be transferred\n @return success Whether the transfer was successful or not" }, "functionSelector": "a9059cbb", "id": 641, "implemented": false, "kind": "function", "modifiers": [], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 637, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 634, "mutability": "mutable", "name": "_to", "nodeType": "VariableDeclaration", "scope": 641, "src": "14589:11:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 633, "name": "address", "nodeType": "ElementaryTypeName", "src": "14589:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 636, "mutability": 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"visibility": "internal" } ], "src": "14636:14:1" }, "scope": 690, "src": "14571:80:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "documentation": { "id": 642, "nodeType": "StructuredDocumentation", "src": "14657:318:1", "text": "@notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`\n @param _from The address of the sender\n @param _to The address of the recipient\n @param _value The amount of token to be transferred\n @return success Whether the transfer was successful or not" }, "functionSelector": "23b872dd", "id": 653, "implemented": false, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 649, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 644, "mutability": "mutable", "name": "_from", "nodeType": "VariableDeclaration", "scope": 653, "src": "15002:13:1", "stateVariable": false, "storageLocation": "default", 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"virtual": false, "visibility": "external" }, { "documentation": { "id": 654, "nodeType": "StructuredDocumentation", "src": "15084:280:1", "text": "@notice `msg.sender` approves `_addr` to spend `_value` tokens\n @param _spender The address of the account able to transfer the tokens\n @param _value The amount of wei to be approved for transfer\n @return success Whether the approval was successful or not" }, "functionSelector": "095ea7b3", "id": 663, "implemented": false, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 659, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 656, "mutability": "mutable", "name": "_spender", "nodeType": "VariableDeclaration", "scope": 663, "src": "15386:16:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 655, "name": "address", "nodeType": "ElementaryTypeName", 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{ "id": 672, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 671, "mutability": "mutable", "name": "remaining", "nodeType": "VariableDeclaration", "scope": 673, "src": "15748:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 670, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15748:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "15747:19:1" }, "scope": 690, "src": "15672:95:1", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "anonymous": false, "id": 681, "name": "Transfer", "nodeType": "EventDefinition", "parameters": { "id": 680, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 675, "indexed": true, "mutability": "mutable", "name": "_from", "nodeType": "VariableDeclaration", "scope": 681, "src": "15788:21:1", 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"src": "15868:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 685, "indexed": true, "mutability": "mutable", "name": "_spender", "nodeType": "VariableDeclaration", "scope": 689, "src": "15892:24:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 684, "name": "address", "nodeType": "ElementaryTypeName", "src": "15892:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 687, "indexed": false, "mutability": "mutable", "name": "_value", "nodeType": "VariableDeclaration", "scope": 689, "src": "15918:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 686, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15918:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "15867:66:1" }, "src": "15853:81:1" } ], "scope": 929, "src": "14117:1819:1" }, { "abstract": false, "baseContracts": [ { "baseName": { "id": 691, "name": "iToken", "nodeType": "IdentifierPath", "referencedDeclaration": 690, "src": "15961:6:1" }, "id": 692, "nodeType": "InheritanceSpecifier", "src": "15961:6:1" } ], "contractDependencies": [ 690 ], "contractKind": "contract", "fullyImplemented": true, "id": 928, "linearizedBaseContracts": [ 928, 690 ], "name": "Test_Token", "nodeType": "ContractDefinition", "nodes": [ { "id": 696, "libraryName": { "id": 693, "name": "SafeERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 623, "src": "15980:9:1" }, "nodeType": "UsingForDirective", "src": "15974:27:1", "typeName": { "id": 695, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 694, "name": "iToken", "nodeType": "IdentifierPath", "referencedDeclaration": 690, "src": "15994:6:1" }, "referencedDeclaration": 690, "src": "15994:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_iToken_$690", "typeString": "contract iToken" } } }, { "constant": true, "id": 703, "mutability": "constant", "name": "MAX_UINT256", "nodeType": "VariableDeclaration", "scope": 928, "src": "16007:49:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 697, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16007:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": { "commonType": { "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639935_by_1", "typeString": "int_const 1157...(70 digits omitted)...9935" }, "id": 702, "isConstant": false, "isLValue": false, 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"256" }, "src": "16046:6:1", "typeDescriptions": { "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639936_by_1", "typeString": "int_const 1157...(70 digits omitted)...9936" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 701, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "16055:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "16046:10:1", "typeDescriptions": { "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639935_by_1", "typeString": "int_const 1157...(70 digits omitted)...9935" } }, "visibility": "private" }, { "constant": false, "functionSelector": "27e235e3", "id": 707, "mutability": "mutable", "name": "balances", "nodeType": "VariableDeclaration", "scope": 928, "src": "16062:44:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 706, "keyType": { "id": 704, "name": "address", "nodeType": "ElementaryTypeName", "src": "16071:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "16062:28:1", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 705, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16082:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "visibility": "public" }, { "constant": false, "functionSelector": "5c658165", "id": 713, "mutability": "mutable", "name": "allowed", "nodeType": "VariableDeclaration", "scope": 928, "src": "16112:64:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 712, "keyType": { "id": 708, "name": "address", "nodeType": "ElementaryTypeName", "src": "16121:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "16112:49:1", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 711, "keyType": { "id": 709, "name": "address", "nodeType": "ElementaryTypeName", "src": "16141:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "16132:28:1", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 710, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16152:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "visibility": "public" }, { "constant": false, "functionSelector": "18160ddd", "id": 715, "mutability": "mutable", "name": "totalSupply", "nodeType": "VariableDeclaration", "scope": 928, "src": "16182:26:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 714, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16182:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "public" }, { "constant": false, "functionSelector": "06fdde03", "id": 717, "mutability": "mutable", "name": "name", "nodeType": "VariableDeclaration", "scope": 928, "src": "16501:18:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", 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"isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2381:2:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" }, "value": "" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_stringliteral_c5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470", "typeString": "literal_string \"\"" } ], "expression": { "id": 73, "name": "recipient", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 55, "src": "2349:9:1", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "id": 74, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "call", "nodeType": "MemberAccess", "src": "2349:14:1", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 76, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "names": [ "value" ], "nodeType": "FunctionCallOptions", "options": [ { "id": 75, "name": "amount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 57, "src": "2372:6:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "src": "2349:31:1", "typeDescriptions": { "typeIdentifier": "t_function_barecall_payable$_t_bytes_memory_ptr_$returns$_t_bool_$_t_bytes_memory_ptr_$value", "typeString": "function (bytes memory) payable returns (bool,bytes memory)" } }, "id": 78, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2349:35:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$_t_bool_$_t_bytes_memory_ptr_$", "typeString": "tuple(bool,bytes memory)" } }, "nodeType": "VariableDeclarationStatement", "src": "2330:54:1" }, { "expression": { "arguments": [ { "id": 81, "name": "success", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 72, "src": "2402:7:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "416464726573733a20756e61626c6520746f2073656e642076616c75652c20726563697069656e74206d61792068617665207265766572746564", "id": 82, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "2411:60:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" }, "value": "Address: unable to send value, recipient may have reverted" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_51ddaa38748c0a1144620fb5bfe8edab31ea437571ad591a7734bbfd0429aeae", "typeString": "literal_string \"Address: unable to send value, recipient may have reverted\"" } ], "id": 80, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "2394:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 83, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2394:78:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 84, "nodeType": "ExpressionStatement", "src": "2394:78:1" } ] }, "documentation": { "id": 53, "nodeType": "StructuredDocumentation", "src": "1177:906:1", "text": " @dev Replacement for Solidity's `transfer`: sends `amount` wei to\n `recipient`, forwarding all available gas and reverting on errors.\n https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost\n of certain opcodes, possibly making contracts go over the 2300 gas limit\n imposed by `transfer`, making them unable to receive funds via\n `transfer`. {sendValue} removes this limitation.\n https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].\n IMPORTANT: because control is transferred to `recipient`, care must be\n taken to not create reentrancy vulnerabilities. Consider using\n {ReentrancyGuard} or the\n https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]." }, "id": 86, "implemented": true, "kind": "function", "modifiers": [], "name": "sendValue", "nodeType": "FunctionDefinition", "parameters": { "id": 58, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 55, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "scope": 86, "src": "2107:25:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" }, "typeName": { "id": 54, "name": "address", "nodeType": "ElementaryTypeName", "src": "2107:15:1", "stateMutability": "payable", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "visibility": "internal" }, { "constant": false, "id": 57, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 86, "src": "2134:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 56, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2134:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2106:43:1" }, "returnParameters": { "id": 59, "nodeType": "ParameterList", "parameters": [], "src": "2159:0:1" }, "scope": 328, "src": "2088:391:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 102, "nodeType": "Block", "src": "3309:82:1", "statements": [ { "expression": { "arguments": [ { "id": 97, "name": "target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 89, "src": "3337:6:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 98, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 91, "src": "3345:4:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "hexValue": "416464726573733a206c6f772d6c6576656c2063616c6c206661696c6564", "id": 99, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "3351:32:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_24d7ab5d382116e64324f19950ca9340b8af1ddeb09a8d026e0a3c6a01dcc9df", "typeString": "literal_string \"Address: low-level call failed\"" }, "value": "Address: low-level call failed" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_stringliteral_24d7ab5d382116e64324f19950ca9340b8af1ddeb09a8d026e0a3c6a01dcc9df", "typeString": "literal_string \"Address: low-level call failed\"" } ], "id": 96, "name": "functionCall", "nodeType": "Identifier", "overloadedDeclarations": [ 103, 123 ], "referencedDeclaration": 123, "src": "3324:12:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_bytes_memory_ptr_$_t_string_memory_ptr_$returns$_t_bytes_memory_ptr_$", "typeString": "function (address,bytes memory,string memory) returns (bytes memory)" } }, "id": 100, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3324:60:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 95, "id": 101, "nodeType": "Return", "src": "3317:67:1" } ] }, "documentation": { "id": 87, "nodeType": "StructuredDocumentation", "src": "2485:730:1", "text": " @dev Performs a Solidity function call using a low level `call`. A\n plain`call` is an unsafe replacement for a function call: use this\n function instead.\n If `target` reverts with a revert reason, it is bubbled up by this\n function (like regular Solidity function calls).\n Returns the raw returned data. To convert to the expected return value,\n use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].\n Requirements:\n - `target` must be a contract.\n - calling `target` with `data` must not revert.\n _Available since v3.1._" }, "id": 103, "implemented": true, "kind": "function", "modifiers": [], "name": "functionCall", "nodeType": "FunctionDefinition", "parameters": { "id": 92, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 89, "mutability": "mutable", "name": "target", "nodeType": "VariableDeclaration", "scope": 103, "src": "3242:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 88, "name": "address", "nodeType": "ElementaryTypeName", "src": "3242:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 91, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 103, "src": "3258:17:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 90, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3258:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3241:35:1" }, "returnParameters": { "id": 95, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 94, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 103, "src": "3295:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 93, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3295:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3294:14:1" }, "scope": 328, "src": "3220:171:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 122, "nodeType": "Block", "src": "3730:76:1", "statements": [ { "expression": { "arguments": [ { "id": 116, "name": "target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 106, "src": "3769:6:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 117, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 108, "src": "3777:4:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "hexValue": "30", "id": 118, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3783:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, { "id": 119, "name": "errorMessage", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 110, "src": "3786:12:1", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } ], "id": 115, "name": "functionCallWithValue", "nodeType": "Identifier", "overloadedDeclarations": [ 143, 193 ], "referencedDeclaration": 193, "src": "3747:21:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$_t_bytes_memory_ptr_$_t_uint256_$_t_string_memory_ptr_$returns$_t_bytes_memory_ptr_$", "typeString": "function (address,bytes memory,uint256,string memory) returns (bytes memory)" } }, "id": 120, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3747:52:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "functionReturnParameters": 114, "id": 121, "nodeType": "Return", "src": "3740:59:1" } ] }, "documentation": { "id": 104, "nodeType": "StructuredDocumentation", "src": "3397:211:1", "text": " @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with\n `errorMessage` as a fallback revert reason when `target` reverts.\n _Available since v3.1._" }, "id": 123, "implemented": true, "kind": "function", "modifiers": [], "name": "functionCall", "nodeType": "FunctionDefinition", "parameters": { "id": 111, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 106, "mutability": "mutable", "name": "target", "nodeType": "VariableDeclaration", "scope": 123, "src": "3635:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 105, "name": "address", "nodeType": "ElementaryTypeName", "src": "3635:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 108, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 123, "src": "3651:17:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 107, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3651:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 110, "mutability": "mutable", "name": "errorMessage", "nodeType": "VariableDeclaration", "scope": 123, "src": "3670:26:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 109, "name": "string", "nodeType": "ElementaryTypeName", "src": "3670:6:1", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "3634:63:1" }, "returnParameters": { "id": 114, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 113, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 123, "src": "3716:12:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 112, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "3716:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "3715:14:1" }, "scope": 328, "src": "3613:193:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 142, "nodeType": "Block", "src": "4281:111:1", "statements": [ { "expression": { "arguments": [ { "id": 136, "name": "target", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 126, "src": "4320:6:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 137, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 128, "src": "4328:4:1", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "id": 138, "name": "value", "nodeType": "Identifier", 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"linearizedBaseContracts": [ 404 ], "name": "IERC20", "nodeType": "ContractDefinition", "nodes": [ { "documentation": { "id": 330, "nodeType": "StructuredDocumentation", "src": "7946:66:1", "text": " @dev Returns the amount of tokens in existence." }, "functionSelector": "18160ddd", "id": 335, "implemented": false, "kind": "function", "modifiers": [], "name": "totalSupply", "nodeType": "FunctionDefinition", "parameters": { "id": 331, "nodeType": "ParameterList", "parameters": [], "src": "8037:2:1" }, "returnParameters": { "id": 334, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 333, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 335, "src": "8063:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 332, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8063:7:1", "typeDescriptions": { "typeIdentifier": 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a boolean value indicating whether the operation succeeded.\n Emits a {Transfer} event." }, "functionSelector": "a9059cbb", "id": 353, "implemented": false, "kind": "function", "modifiers": [], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 349, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 346, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "scope": 353, "src": "8461:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 345, "name": "address", "nodeType": "ElementaryTypeName", "src": "8461:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 348, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 353, "src": "8480:14:1", 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"virtual": false, "visibility": "external" }, { "documentation": { "id": 354, "nodeType": "StructuredDocumentation", "src": "8526:264:1", "text": " @dev Returns the remaining number of tokens that `spender` will be\n allowed to spend on behalf of `owner` through {transferFrom}. This is\n zero by default.\n This value changes when {approve} or {transferFrom} are called." }, "functionSelector": "dd62ed3e", "id": 363, "implemented": false, "kind": "function", "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 359, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 356, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 363, "src": "8814:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 355, "name": "address", "nodeType": "ElementaryTypeName", "src": "8814:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 358, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 363, "src": "8829:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 357, "name": "address", "nodeType": "ElementaryTypeName", "src": "8829:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "8813:32:1" }, "returnParameters": { "id": 362, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 361, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 363, "src": "8869:7:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 360, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "8869:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "8868:9:1" }, "scope": 404, "src": "8795:83:1", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "documentation": { "id": 364, "nodeType": "StructuredDocumentation", "src": "8884:642:1", "text": " @dev Sets `amount` as the allowance of `spender` over the caller's tokens.\n Returns a boolean value indicating whether the operation succeeded.\n IMPORTANT: Beware that changing an allowance with this method brings the risk\n that someone may use both the old and the new allowance by unfortunate\n transaction ordering. One possible solution to mitigate this race\n condition is to first reduce the spender's allowance to 0 and set the\n desired value afterwards:\n https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729\n Emits an {Approval} event." }, "functionSelector": "095ea7b3", "id": 373, "implemented": false, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 369, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 366, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 373, "src": "9548:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 365, "name": "address", "nodeType": "ElementaryTypeName", "src": "9548:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { 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"typeString": "bool" } }, "visibility": "internal" } ], "src": "9598:6:1" }, "scope": 404, "src": "9531:74:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "documentation": { "id": 374, "nodeType": "StructuredDocumentation", "src": "9611:296:1", "text": " @dev Moves `amount` tokens from `sender` to `recipient` using the\n allowance mechanism. `amount` is then deducted from the caller's\n allowance.\n Returns a boolean value indicating whether the operation succeeded.\n Emits a {Transfer} event." }, "functionSelector": "23b872dd", "id": 385, "implemented": false, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 381, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 376, "mutability": "mutable", "name": "sender", "nodeType": "VariableDeclaration", "scope": 385, "src": "9934:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 375, "name": "address", "nodeType": "ElementaryTypeName", "src": "9934:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 378, "mutability": "mutable", "name": "recipient", "nodeType": "VariableDeclaration", "scope": 385, "src": "9950:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 377, "name": "address", "nodeType": "ElementaryTypeName", "src": "9950:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 380, "mutability": "mutable", "name": "amount", "nodeType": "VariableDeclaration", "scope": 385, "src": "9969:14:1", "stateVariable": false, 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"visibility": "external" }, { "anonymous": false, "documentation": { "id": 386, "nodeType": "StructuredDocumentation", "src": "10015:158:1", "text": " @dev Emitted when `value` tokens are moved from one account (`from`) to\n another (`to`).\n Note that `value` may be zero." }, "id": 394, "name": "Transfer", "nodeType": "EventDefinition", "parameters": { "id": 393, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 388, "indexed": true, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 394, "src": "10193:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 387, "name": "address", "nodeType": "ElementaryTypeName", "src": "10193:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 390, "indexed": true, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 394, "src": "10215:18:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 389, "name": "address", "nodeType": "ElementaryTypeName", "src": "10215:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 392, "indexed": false, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 394, "src": "10235:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 391, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10235:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "10192:57:1" }, "src": "10178:72:1" }, { "anonymous": false, "documentation": { "id": 395, "nodeType": "StructuredDocumentation", "src": "10256:148:1", "text": " @dev Emitted when the allowance of a `spender` for an `owner` is set by\n a call to {approve}. `value` is the new allowance." }, "id": 403, "name": "Approval", "nodeType": "EventDefinition", "parameters": { "id": 402, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 397, "indexed": true, "mutability": "mutable", "name": "owner", "nodeType": "VariableDeclaration", "scope": 403, "src": "10424:21:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 396, "name": "address", "nodeType": "ElementaryTypeName", "src": "10424:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 399, "indexed": true, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 403, "src": "10447:23:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 398, "name": "address", "nodeType": "ElementaryTypeName", "src": "10447:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 401, "indexed": false, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 403, "src": "10472:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 400, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "10472:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "10423:63:1" }, "src": "10409:78:1" } ], "scope": 929, "src": "7923:2566:1" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 405, "nodeType": "StructuredDocumentation", "src": "10491:457:1", "text": " @title SafeERC20\n @dev Wrappers around ERC20 operations that throw on failure (when the token\n contract returns false). Tokens that return no value (and instead revert or\n throw on failure) are also supported, non-reverting calls are assumed to be\n successful.\n To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,\n which allows you to call the safe operations as `token.safeTransfer(...)`, etc." }, "fullyImplemented": true, "id": 623, "linearizedBaseContracts": [ 623 ], "name": "SafeERC20", "nodeType": "ContractDefinition", "nodes": [ { "id": 408, "libraryName": { "id": 406, "name": "Address", "nodeType": "IdentifierPath", "referencedDeclaration": 328, "src": "10979:7:1" }, "nodeType": "UsingForDirective", "src": "10973:26:1", "typeName": { "id": 407, "name": "address", "nodeType": "ElementaryTypeName", "src": "10991:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } }, { "body": { "id": 430, "nodeType": "Block", "src": "11077:103:1", "statements": [ { "expression": { "arguments": [ { "id": 419, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 411, "src": "11107:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 422, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 411, "src": "11137:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 423, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transfer", "nodeType": "MemberAccess", "referencedDeclaration": 353, "src": "11137:14:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 424, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "11137:23:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 425, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 413, "src": "11162:2:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 426, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 415, "src": "11166:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 420, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "11114:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 421, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "11114:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 427, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11114:58:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 418, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "11087:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 428, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11087:86:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 429, "nodeType": "ExpressionStatement", "src": "11087:86:1" } ] }, "id": 431, "implemented": true, "kind": "function", "modifiers": [], "name": "safeTransfer", "nodeType": "FunctionDefinition", "parameters": { "id": 416, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 411, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 431, "src": "11027:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 410, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 409, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "11027:6:1" }, "referencedDeclaration": 404, "src": "11027:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 413, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 431, "src": "11041:10:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 412, "name": "address", "nodeType": "ElementaryTypeName", "src": "11041:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 415, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 431, "src": "11053:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 414, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11053:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "11026:41:1" }, "returnParameters": { "id": 417, "nodeType": "ParameterList", "parameters": [], "src": "11077:0:1" }, "scope": 623, "src": "11005:175:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 456, "nodeType": "Block", "src": "11276:113:1", "statements": [ { "expression": { "arguments": [ { "id": 444, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 434, "src": "11306:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 447, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 434, "src": "11336:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 448, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "transferFrom", "nodeType": "MemberAccess", "referencedDeclaration": 385, "src": "11336:18:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,address,uint256) external returns (bool)" } }, "id": 449, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "11336:27:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 450, "name": "from", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 436, "src": "11365:4:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 451, "name": "to", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 438, "src": "11371:2:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 452, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 440, "src": "11375:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 445, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "11313:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 446, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "11313:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 453, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11313:68:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 443, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "11286:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 454, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "11286:96:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 455, "nodeType": "ExpressionStatement", "src": "11286:96:1" } ] }, "id": 457, "implemented": true, "kind": "function", "modifiers": [], "name": "safeTransferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 441, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 434, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 457, "src": "11212:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 433, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 432, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "11212:6:1" }, "referencedDeclaration": 404, "src": "11212:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 436, "mutability": "mutable", "name": "from", "nodeType": "VariableDeclaration", "scope": 457, "src": "11226:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 435, "name": "address", "nodeType": "ElementaryTypeName", "src": "11226:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 438, "mutability": "mutable", "name": "to", "nodeType": "VariableDeclaration", "scope": 457, "src": "11240:10:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 437, "name": "address", "nodeType": "ElementaryTypeName", "src": "11240:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 440, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 457, "src": "11252:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 439, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11252:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "11211:55:1" }, "returnParameters": { "id": 442, "nodeType": "ParameterList", "parameters": [], "src": "11276:0:1" }, "scope": 623, "src": "11186:203:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 500, "nodeType": "Block", "src": "11725:537:1", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_bool", "typeString": "bool" }, "id": 484, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 471, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 469, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 465, "src": "12014:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 470, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "12023:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "12014:10:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 472, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "12013:12:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "BinaryOperation", "operator": "||", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 482, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "arguments": [ { "id": 477, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967268, "src": "12054:4:1", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } ], "id": 476, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "12046:7:1", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 475, "name": "address", "nodeType": "ElementaryTypeName", "src": "12046:7:1", "typeDescriptions": {} } }, "id": 478, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12046:13:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 479, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 463, "src": "12061:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 473, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 461, "src": "12030:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 474, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "allowance", "nodeType": "MemberAccess", "referencedDeclaration": 363, "src": "12030:15:1", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_address_$_t_address_$returns$_t_uint256_$", "typeString": "function (address,address) view external returns (uint256)" } }, "id": 480, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12030:39:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 481, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "12073:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "12030:44:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "id": 483, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "12029:46:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "src": "12013:62:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "5361666545524332303a20617070726f76652066726f6d206e6f6e2d7a65726f20746f206e6f6e2d7a65726f20616c6c6f77616e6365", "id": 485, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "12089:56:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_ef945ddb1bfdc0da870feb4560d868b047642b4ac7f2fb7f8b7c51cb4a411e25", "typeString": "literal_string \"SafeERC20: approve from non-zero to non-zero allowance\"" }, "value": "SafeERC20: approve from non-zero to non-zero allowance" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_ef945ddb1bfdc0da870feb4560d868b047642b4ac7f2fb7f8b7c51cb4a411e25", "typeString": "literal_string \"SafeERC20: approve from non-zero to non-zero allowance\"" } ], "id": 468, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "12005:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 486, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12005:150:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 487, "nodeType": "ExpressionStatement", "src": "12005:150:1" }, { "expression": { "arguments": [ { "id": 489, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 461, "src": "12185:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 492, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 461, "src": "12215:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 493, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "approve", "nodeType": "MemberAccess", "referencedDeclaration": 373, "src": "12215:13:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 494, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "12215:22:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 495, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 463, "src": "12239:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 496, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 465, "src": "12248:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 490, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "12192:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 491, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "12192:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 497, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12192:62:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 488, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "12165:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 498, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12165:90:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 499, "nodeType": "ExpressionStatement", "src": "12165:90:1" } ] }, "documentation": { "id": 458, "nodeType": "StructuredDocumentation", "src": "11395:249:1", "text": " @dev Deprecated. This function has issues similar to the ones found in\n {IERC20-approve}, and its usage is discouraged.\n Whenever possible, use {safeIncreaseAllowance} and\n {safeDecreaseAllowance} instead." }, "id": 501, "implemented": true, "kind": "function", "modifiers": [], "name": "safeApprove", "nodeType": "FunctionDefinition", "parameters": { "id": 466, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 461, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 501, "src": "11670:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 460, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 459, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "11670:6:1" }, "referencedDeclaration": 404, "src": "11670:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 463, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 501, "src": "11684:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 462, "name": "address", "nodeType": "ElementaryTypeName", "src": "11684:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 465, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 501, "src": "11701:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 464, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "11701:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "11669:46:1" }, "returnParameters": { "id": 467, "nodeType": "ParameterList", "parameters": [], "src": "11725:0:1" }, "scope": 623, "src": "11649:613:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 536, "nodeType": "Block", "src": "12354:194:1", "statements": [ { "assignments": [ 512 ], "declarations": [ { "constant": false, "id": 512, "mutability": "mutable", "name": "newAllowance", "nodeType": "VariableDeclaration", "scope": 536, "src": "12364:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 511, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12364:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 523, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 522, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "arguments": [ { "id": 517, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967268, "src": "12411:4:1", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } ], "id": 516, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "12403:7:1", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 515, "name": "address", "nodeType": "ElementaryTypeName", "src": "12403:7:1", "typeDescriptions": {} } }, "id": 518, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12403:13:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 519, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 506, "src": "12418:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 513, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 504, "src": "12387:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 514, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "allowance", "nodeType": "MemberAccess", "referencedDeclaration": 363, "src": "12387:15:1", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_address_$_t_address_$returns$_t_uint256_$", "typeString": "function (address,address) view external returns (uint256)" } }, "id": 520, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12387:39:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 521, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 508, "src": "12429:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "12387:47:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "12364:70:1" }, { "expression": { "arguments": [ { "id": 525, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 504, "src": "12464:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { "arguments": [ { "expression": { "expression": { "id": 528, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 504, "src": "12494:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 529, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "approve", "nodeType": "MemberAccess", "referencedDeclaration": 373, "src": "12494:13:1", "typeDescriptions": { "typeIdentifier": "t_function_external_nonpayable$_t_address_$_t_uint256_$returns$_t_bool_$", "typeString": "function (address,uint256) external returns (bool)" } }, "id": 530, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "selector", "nodeType": "MemberAccess", "src": "12494:22:1", "typeDescriptions": { "typeIdentifier": "t_bytes4", "typeString": "bytes4" } }, { "id": 531, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 506, "src": "12518:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 532, "name": "newAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 512, "src": "12527:12:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes4", "typeString": "bytes4" }, { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "expression": { "id": 526, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "12471:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 527, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "encodeWithSelector", "nodeType": "MemberAccess", "src": "12471:22:1", "typeDescriptions": { "typeIdentifier": "t_function_abiencodewithselector_pure$_t_bytes4_$returns$_t_bytes_memory_ptr_$", "typeString": "function (bytes4) pure returns (bytes memory)" } }, "id": 533, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12471:69:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 524, "name": "_callOptionalReturn", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 622, "src": "12444:19:1", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_contract$_IERC20_$404_$_t_bytes_memory_ptr_$returns$__$", "typeString": "function (contract IERC20,bytes memory)" } }, "id": 534, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12444:97:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 535, "nodeType": "ExpressionStatement", "src": "12444:97:1" } ] }, "id": 537, "implemented": true, "kind": "function", "modifiers": [], "name": "safeIncreaseAllowance", "nodeType": "FunctionDefinition", "parameters": { "id": 509, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 504, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 537, "src": "12299:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 503, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 502, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "12299:6:1" }, "referencedDeclaration": 404, "src": "12299:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 506, "mutability": "mutable", "name": "spender", "nodeType": "VariableDeclaration", "scope": 537, "src": "12313:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 505, "name": "address", "nodeType": "ElementaryTypeName", "src": "12313:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 508, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 537, "src": "12330:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 507, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12330:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "12298:46:1" }, "returnParameters": { "id": 510, "nodeType": "ParameterList", "parameters": [], "src": "12354:0:1" }, "scope": 623, "src": "12268:280:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "internal" }, { "body": { "id": 583, "nodeType": "Block", "src": "12640:340:1", "statements": [ { "assignments": [ 548 ], "declarations": [ { "constant": false, "id": 548, "mutability": "mutable", "name": "oldAllowance", "nodeType": "VariableDeclaration", "scope": 583, "src": "12654:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 547, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12654:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 557, "initialValue": { "arguments": [ { "arguments": [ { "id": 553, "name": "this", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967268, "src": "12701:4:1", "typeDescriptions": { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_contract$_SafeERC20_$623", "typeString": "library SafeERC20" } ], "id": 552, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "12693:7:1", "typeDescriptions": { "typeIdentifier": "t_type$_t_address_$", "typeString": "type(address)" }, "typeName": { "id": 551, "name": "address", "nodeType": "ElementaryTypeName", "src": "12693:7:1", "typeDescriptions": {} } }, "id": 554, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12693:13:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, { "id": 555, "name": "spender", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 542, "src": "12708:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" }, { "typeIdentifier": "t_address", "typeString": "address" } ], "expression": { "id": 549, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 540, "src": "12677:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "id": 550, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "allowance", "nodeType": "MemberAccess", "referencedDeclaration": 363, "src": "12677:15:1", "typeDescriptions": { "typeIdentifier": "t_function_external_view$_t_address_$_t_address_$returns$_t_uint256_$", "typeString": "function (address,address) view external returns (uint256)" } }, "id": 556, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12677:39:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "12654:62:1" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 561, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 559, "name": "oldAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 548, "src": "12738:12:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "id": 560, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 544, "src": "12754:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "12738:21:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "5361666545524332303a2064656372656173656420616c6c6f77616e63652062656c6f77207a65726f", "id": 562, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "12761:43:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_2c3af60974a758b7e72e108c9bf0943ecc9e4f2e8af4695da5f52fbf57a63d3a", "typeString": "literal_string \"SafeERC20: decreased allowance below zero\"" }, "value": "SafeERC20: decreased allowance below zero" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_2c3af60974a758b7e72e108c9bf0943ecc9e4f2e8af4695da5f52fbf57a63d3a", "typeString": "literal_string \"SafeERC20: decreased allowance below zero\"" } ], "id": 558, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "12730:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 563, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "12730:75:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 564, "nodeType": "ExpressionStatement", "src": "12730:75:1" }, { "assignments": [ 566 ], "declarations": [ { "constant": false, "id": 566, "mutability": "mutable", "name": "newAllowance", "nodeType": "VariableDeclaration", "scope": 583, "src": "12819:20:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 565, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "12819:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 570, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 569, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 567, "name": "oldAllowance", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 548, "src": "12842:12:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "id": 568, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 544, "src": "12857:5:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "12842:20:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "12819:43:1" }, { "expression": { "arguments": [ { "id": 572, "name": "token", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 540, "src": "12896:5:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, { 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"t_function_abidecode_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 615, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "14020:30:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "5361666545524332303a204552433230206f7065726174696f6e20646964206e6f742073756363656564", "id": 616, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "14052:44:1", "typeDescriptions": { "typeIdentifier": "t_stringliteral_e11ad79d1e4a7f2e5f376964cb99e8e8f7904e3fc16a109f7a7ecb9aa7956dcd", "typeString": "literal_string \"SafeERC20: ERC20 operation did not succeed\"" }, "value": "SafeERC20: ERC20 operation did not succeed" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_e11ad79d1e4a7f2e5f376964cb99e8e8f7904e3fc16a109f7a7ecb9aa7956dcd", "typeString": "literal_string \"SafeERC20: ERC20 operation did not succeed\"" } ], "id": 608, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "14012:7:1", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 617, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "14012:85:1", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 618, "nodeType": "ExpressionStatement", "src": "14012:85:1" } ] } } ] }, "documentation": { "id": 585, "nodeType": "StructuredDocumentation", "src": "12986:372:1", "text": " @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement\n on the return value: the return value is optional (but if data is returned, it must not be false).\n @param token The token targeted by the call.\n @param data The call data (encoded using abi.encode or one of its variants)." }, "id": 622, "implemented": true, "kind": "function", "modifiers": [], "name": "_callOptionalReturn", "nodeType": "FunctionDefinition", "parameters": { "id": 591, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 588, "mutability": "mutable", "name": "token", "nodeType": "VariableDeclaration", "scope": 622, "src": "13392:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" }, "typeName": { "id": 587, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 586, "name": "IERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 404, "src": "13392:6:1" }, "referencedDeclaration": 404, "src": "13392:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_IERC20_$404", "typeString": "contract IERC20" } }, "visibility": "internal" }, { "constant": false, "id": 590, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 622, "src": "13406:17:1", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 589, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "13406:5:1", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "13391:33:1" }, "returnParameters": { "id": 592, "nodeType": "ParameterList", "parameters": [], "src": "13433:0:1" }, "scope": 623, "src": "13363:751:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "private" } ], "scope": 929, "src": "10949:3167:1" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "interface", "fullyImplemented": false, "id": 690, "linearizedBaseContracts": [ 690 ], "name": "iToken", "nodeType": "ContractDefinition", "nodes": [ { "documentation": { "id": 624, "nodeType": "StructuredDocumentation", "src": "14141:106:1", "text": "@param _owner The address from which the balance will be retrieved\n @return balance the balance" }, "functionSelector": "70a08231", "id": 631, "implemented": false, "kind": "function", "modifiers": [], "name": "balanceOf", "nodeType": "FunctionDefinition", "parameters": { "id": 627, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 626, "mutability": "mutable", "name": "_owner", "nodeType": "VariableDeclaration", "scope": 631, "src": "14271:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 625, "name": "address", "nodeType": "ElementaryTypeName", "src": "14271:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "14270:16:1" }, "returnParameters": { "id": 630, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 629, "mutability": "mutable", "name": "balance", "nodeType": "VariableDeclaration", "scope": 631, "src": "14310:15:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 628, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "14310:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "14309:17:1" }, "scope": 690, "src": "14252:75:1", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "documentation": { "id": 632, "nodeType": "StructuredDocumentation", "src": "14333:233:1", "text": "@notice send `_value` token to `_to` from `msg.sender`\n @param _to The address of the recipient\n @param _value The amount of token to be transferred\n @return success Whether the transfer was successful or not" }, "functionSelector": "a9059cbb", "id": 641, "implemented": false, "kind": "function", "modifiers": [], "name": "transfer", "nodeType": "FunctionDefinition", "parameters": { "id": 637, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 634, "mutability": "mutable", "name": "_to", "nodeType": "VariableDeclaration", "scope": 641, "src": "14589:11:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 633, "name": "address", "nodeType": "ElementaryTypeName", "src": "14589:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 636, "mutability": "mutable", "name": "_value", "nodeType": "VariableDeclaration", "scope": 641, "src": "14602:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 635, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "14602:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "14588:29:1" }, "returnParameters": { "id": 640, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 639, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "scope": 641, "src": "14637:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 638, "name": "bool", "nodeType": "ElementaryTypeName", "src": "14637:4:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "14636:14:1" }, "scope": 690, "src": "14571:80:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "documentation": { "id": 642, "nodeType": "StructuredDocumentation", "src": "14657:318:1", "text": "@notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`\n @param _from The address of the sender\n @param _to The address of the recipient\n @param _value The amount of token to be transferred\n @return success Whether the transfer was successful or not" }, "functionSelector": "23b872dd", "id": 653, "implemented": false, "kind": "function", "modifiers": [], "name": "transferFrom", "nodeType": "FunctionDefinition", "parameters": { "id": 649, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 644, "mutability": "mutable", "name": "_from", "nodeType": "VariableDeclaration", "scope": 653, "src": "15002:13:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 643, "name": "address", "nodeType": "ElementaryTypeName", "src": "15002:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 646, "mutability": "mutable", "name": "_to", "nodeType": "VariableDeclaration", "scope": 653, "src": "15017:11:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 645, "name": "address", "nodeType": "ElementaryTypeName", "src": "15017:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 648, "mutability": "mutable", "name": "_value", "nodeType": "VariableDeclaration", "scope": 653, "src": "15030:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 647, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15030:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "15001:44:1" }, "returnParameters": { "id": 652, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 651, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "scope": 653, "src": "15064:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 650, "name": "bool", "nodeType": "ElementaryTypeName", "src": "15064:4:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "15063:14:1" }, "scope": 690, "src": "14980:98:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "documentation": { "id": 654, "nodeType": "StructuredDocumentation", "src": "15084:280:1", "text": "@notice `msg.sender` approves `_addr` to spend `_value` tokens\n @param _spender The address of the account able to transfer the tokens\n @param _value The amount of wei to be approved for transfer\n @return success Whether the approval was successful or not" }, "functionSelector": "095ea7b3", "id": 663, "implemented": false, "kind": "function", "modifiers": [], "name": "approve", "nodeType": "FunctionDefinition", "parameters": { "id": 659, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 656, "mutability": "mutable", "name": "_spender", "nodeType": "VariableDeclaration", "scope": 663, "src": "15386:16:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 655, "name": "address", "nodeType": "ElementaryTypeName", "src": "15386:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 658, "mutability": "mutable", "name": "_value", "nodeType": "VariableDeclaration", "scope": 663, "src": "15406:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 657, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15406:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "15385:36:1" }, "returnParameters": { "id": 662, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 661, "mutability": "mutable", "name": "success", "nodeType": "VariableDeclaration", "scope": 663, "src": "15440:12:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 660, "name": "bool", "nodeType": "ElementaryTypeName", "src": "15440:4:1", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "src": "15439:14:1" }, "scope": 690, "src": "15369:85:1", "stateMutability": "nonpayable", "virtual": false, "visibility": "external" }, { "documentation": { "id": 664, "nodeType": "StructuredDocumentation", "src": "15460:207:1", "text": "@param _owner The address of the account owning tokens\n @param _spender The address of the account able to transfer the tokens\n @return remaining Amount of remaining tokens allowed to spent" }, "functionSelector": "dd62ed3e", "id": 673, "implemented": false, "kind": "function", "modifiers": [], "name": "allowance", "nodeType": "FunctionDefinition", "parameters": { "id": 669, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 666, "mutability": "mutable", "name": "_owner", "nodeType": "VariableDeclaration", "scope": 673, "src": "15691:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 665, "name": "address", "nodeType": "ElementaryTypeName", "src": "15691:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 668, "mutability": "mutable", "name": "_spender", "nodeType": "VariableDeclaration", "scope": 673, "src": "15707:16:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 667, "name": "address", "nodeType": "ElementaryTypeName", "src": "15707:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" } ], "src": "15690:34:1" }, "returnParameters": { "id": 672, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 671, "mutability": "mutable", "name": "remaining", "nodeType": "VariableDeclaration", "scope": 673, "src": "15748:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 670, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15748:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "15747:19:1" }, "scope": 690, "src": "15672:95:1", "stateMutability": "view", "virtual": false, "visibility": "external" }, { "anonymous": false, "id": 681, "name": "Transfer", "nodeType": "EventDefinition", "parameters": { "id": 680, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 675, "indexed": true, "mutability": "mutable", "name": "_from", "nodeType": "VariableDeclaration", "scope": 681, "src": "15788:21:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 674, "name": "address", "nodeType": "ElementaryTypeName", "src": "15788:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 677, "indexed": true, "mutability": "mutable", "name": "_to", "nodeType": "VariableDeclaration", "scope": 681, "src": "15811:19:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 676, "name": "address", "nodeType": "ElementaryTypeName", "src": "15811:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 679, "indexed": false, "mutability": "mutable", "name": "_value", "nodeType": "VariableDeclaration", "scope": 681, "src": "15832:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 678, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15832:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "15787:60:1" }, "src": "15773:75:1" }, { "anonymous": false, "id": 689, "name": "Approval", "nodeType": "EventDefinition", "parameters": { "id": 688, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 683, "indexed": true, "mutability": "mutable", "name": "_owner", "nodeType": "VariableDeclaration", "scope": 689, "src": "15868:22:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 682, "name": "address", "nodeType": "ElementaryTypeName", "src": "15868:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 685, "indexed": true, "mutability": "mutable", "name": "_spender", "nodeType": "VariableDeclaration", "scope": 689, "src": "15892:24:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 684, "name": "address", "nodeType": "ElementaryTypeName", "src": "15892:7:1", "stateMutability": "nonpayable", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "visibility": "internal" }, { "constant": false, "id": 687, "indexed": false, "mutability": "mutable", "name": "_value", "nodeType": "VariableDeclaration", "scope": 689, "src": "15918:14:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 686, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "15918:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "15867:66:1" }, "src": "15853:81:1" } ], "scope": 929, "src": "14117:1819:1" }, { "abstract": false, "baseContracts": [ { "baseName": { "id": 691, "name": "iToken", "nodeType": "IdentifierPath", "referencedDeclaration": 690, "src": "15961:6:1" }, "id": 692, "nodeType": "InheritanceSpecifier", "src": "15961:6:1" } ], "contractDependencies": [ 690 ], "contractKind": "contract", "fullyImplemented": true, "id": 928, "linearizedBaseContracts": [ 928, 690 ], "name": "Test_Token", "nodeType": "ContractDefinition", "nodes": [ { "id": 696, "libraryName": { "id": 693, "name": "SafeERC20", "nodeType": "IdentifierPath", "referencedDeclaration": 623, "src": "15980:9:1" }, "nodeType": "UsingForDirective", "src": "15974:27:1", "typeName": { "id": 695, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 694, "name": "iToken", "nodeType": "IdentifierPath", "referencedDeclaration": 690, "src": "15994:6:1" }, "referencedDeclaration": 690, "src": "15994:6:1", "typeDescriptions": { "typeIdentifier": "t_contract$_iToken_$690", "typeString": "contract iToken" } } }, { "constant": true, "id": 703, "mutability": "constant", "name": "MAX_UINT256", "nodeType": "VariableDeclaration", "scope": 928, "src": "16007:49:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 697, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16007:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": { "commonType": { "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639935_by_1", "typeString": "int_const 1157...(70 digits omitted)...9935" }, "id": 702, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639936_by_1", "typeString": "int_const 1157...(70 digits omitted)...9936" }, "id": 700, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "leftExpression": { "hexValue": "32", "id": 698, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "16046:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "hexValue": "323536", "id": 699, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "16049:3:1", "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "src": "16046:6:1", "typeDescriptions": { "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639936_by_1", "typeString": "int_const 1157...(70 digits omitted)...9936" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 701, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "16055:1:1", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "16046:10:1", "typeDescriptions": { "typeIdentifier": "t_rational_115792089237316195423570985008687907853269984665640564039457584007913129639935_by_1", "typeString": "int_const 1157...(70 digits omitted)...9935" } }, "visibility": "private" }, { "constant": false, "functionSelector": "27e235e3", "id": 707, "mutability": "mutable", "name": "balances", "nodeType": "VariableDeclaration", "scope": 928, "src": "16062:44:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "typeName": { "id": 706, "keyType": { "id": 704, "name": "address", "nodeType": "ElementaryTypeName", "src": "16071:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "16062:28:1", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 705, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16082:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } }, "visibility": "public" }, { "constant": false, "functionSelector": "5c658165", "id": 713, "mutability": "mutable", "name": "allowed", "nodeType": "VariableDeclaration", "scope": 928, "src": "16112:64:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "typeName": { "id": 712, "keyType": { "id": 708, "name": "address", "nodeType": "ElementaryTypeName", "src": "16121:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "16112:49:1", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_mapping$_t_address_$_t_uint256_$_$", "typeString": "mapping(address => mapping(address => uint256))" }, "valueType": { "id": 711, "keyType": { "id": 709, "name": "address", "nodeType": "ElementaryTypeName", "src": "16141:7:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "nodeType": "Mapping", "src": "16132:28:1", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" }, "valueType": { "id": 710, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16152:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } } }, "visibility": "public" }, { "constant": false, "functionSelector": "18160ddd", "id": 715, "mutability": "mutable", "name": "totalSupply", "nodeType": "VariableDeclaration", "scope": 928, "src": "16182:26:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 714, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "16182:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "public" }, { "constant": false, "functionSelector": "06fdde03", "id": 717, "mutability": "mutable", "name": "name", "nodeType": "VariableDeclaration", "scope": 928, "src": "16501:18:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string" }, "typeName": { "id": 716, "name": "string", "nodeType": "ElementaryTypeName", "src": "16501:6:1", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "public" }, { "constant": false, "functionSelector": "313ce567", "id": 719, "mutability": "mutable", "name": "decimals", "nodeType": "VariableDeclaration", "scope": 928, "src": "16572:21:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 718, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "16572:5:1", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "public" }, { "constant": false, "functionSelector": "95d89b41", "id": 721, "mutability": "mutable", "name": "symbol", "nodeType": "VariableDeclaration", "scope": 928, "src": "16643:20:1", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_string_storage", "typeString": "string" }, "typeName": { "id": 720, "name": "string", "nodeType": "ElementaryTypeName", "src": "16643:6:1", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "public" }, { "body": { "id": 755, "nodeType": "Block", "src": "16822:493:1", "statements": [ { "expression": { "id": 737, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 732, "name": "balances", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 707, "src": "16832:8:1", "typeDescriptions": { "typeIdentifier": "t_mapping$_t_address_$_t_uint256_$", "typeString": "mapping(address => uint256)" } }, "id": 735, "indexExpression": { "expression": { "id": 733, "name": "msg", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967281, "src": "16841:3:1", "typeDescriptions": { "typeIdentifier": "t_magic_message", "typeString": "msg" } }, "id": 734, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "sender", "nodeType": "MemberAccess", "src": "16841:10:1", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "16832:20:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 736, "name": "_initialAmount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 723, "src": "16855:14:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "16832:37:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 738, "nodeType": "ExpressionStatement", "src": "16832:37:1" }, { "expression": { "id": 741, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 739, "name": "totalSupply", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 715, "src": "16932:11:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 740, "name": "_initialAmount", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 723, "src": "16946:14:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "16932:28:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 742, "nodeType": "ExpressionStatement", "src": "16932:28:1" }, { "expression": { "id": 745, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 743, "name": "name", "nodeType": "Identifier", 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"visibility": "internal" } ], "src": "18704:34:1" }, "returnParameters": { "id": 919, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 918, "mutability": "mutable", "name": "remaining", "nodeType": "VariableDeclaration", "scope": 927, "src": "18769:17:1", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 917, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "18769:7:1", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "18768:19:1" }, "scope": 928, "src": "18686:151:1", "stateMutability": "view", "virtual": false, "visibility": "public" } ], "scope": 929, "src": "15938:2901:1" } ], "src": "73:18766:1" }, "compiler": { "name": "solc", "version": "0.8.0+commit.c7dfd78e.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.3.3", "updatedAt": "2021-02-08T17:00:21.793Z", "devdoc": { "kind": "dev", "methods": { "allowance(address,address)": { "params": { "_owner": "The address of the account owning tokens", "_spender": "The address of the account able to transfer the tokens" }, "returns": { "remaining": "Amount of remaining tokens allowed to spent" } }, "approve(address,uint256)": { "params": { "_spender": "The address of the account able to transfer the tokens", "_value": "The amount of wei to be approved for transfer" }, "returns": { "success": "Whether the approval was successful or not" } }, "balanceOf(address)": { "params": { "_owner": "The address from which the balance will be retrieved" }, "returns": { "balance": "the balance" } }, "transfer(address,uint256)": { "params": { "_to": "The address of the recipient", "_value": "The amount of token to be transferred" }, "returns": { "success": "Whether the transfer was successful or not" } }, "transferFrom(address,address,uint256)": { "params": { "_from": "The address of the sender", "_to": "The address of the recipient", "_value": "The amount of token to be transferred" }, "returns": { "success": "Whether the transfer was successful or not" } } }, "version": 1 }, "userdoc": { "kind": "user", "methods": { "approve(address,uint256)": { "notice": "`msg.sender` approves `_addr` to spend `_value` tokens" }, "transfer(address,uint256)": { "notice": "send `_value` token to `_to` from `msg.sender`" }, "transferFrom(address,address,uint256)": { "notice": "send `_value` token to `_to` from `_from` on the condition it is approved by `_from`" } }, "version": 1 } }