{ "fileName": "RefundEscrow.sol", "contractName": "RefundEscrow", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.7.0;\n\nimport \"./ConditionalEscrow.sol\";\n\n/**\n * @title RefundEscrow\n * @dev Escrow that holds funds for a beneficiary, deposited from multiple\n * parties.\n * @dev Intended usage: See {Escrow}. Same usage guidelines apply here.\n * @dev The owner account (that is, the contract that instantiates this\n * contract) may deposit, close the deposit period, and allow for either\n * withdrawal by the beneficiary, or refunds to the depositors. All interactions\n * with `RefundEscrow` will be made through the owner contract.\n */\ncontract RefundEscrow is ConditionalEscrow {\n enum State { Active, Refunding, Closed }\n\n event RefundsClosed();\n event RefundsEnabled();\n\n State private _state;\n address payable private _beneficiary;\n\n /**\n * @dev Constructor.\n * @param beneficiary The beneficiary of the deposits.\n */\n constructor (address payable beneficiary) {\n require(beneficiary != address(0), \"RefundEscrow: beneficiary is the zero address\");\n _beneficiary = beneficiary;\n _state = State.Active;\n }\n\n /**\n * @return The current state of the escrow.\n */\n function state() public view returns (State) {\n return _state;\n }\n\n /**\n * @return The beneficiary of the escrow.\n */\n function beneficiary() public view returns (address) {\n return _beneficiary;\n }\n\n /**\n * @dev Stores funds that may later be refunded.\n * @param refundee The address funds will be sent to if a refund occurs.\n */\n function deposit(address refundee) public payable virtual override {\n require(_state == State.Active, \"RefundEscrow: can only deposit while active\");\n super.deposit(refundee);\n }\n\n /**\n * @dev Allows for the beneficiary to withdraw their funds, rejecting\n * further deposits.\n */\n function close() public onlyOwner virtual {\n require(_state == State.Active, \"RefundEscrow: can only close while active\");\n _state = State.Closed;\n emit RefundsClosed();\n }\n\n /**\n * @dev Allows for refunds to take place, rejecting further deposits.\n */\n function enableRefunds() public onlyOwner virtual {\n require(_state == State.Active, \"RefundEscrow: can only enable refunds while active\");\n _state = State.Refunding;\n emit RefundsEnabled();\n }\n\n /**\n * @dev Withdraws the beneficiary's funds.\n */\n function beneficiaryWithdraw() public virtual {\n require(_state == State.Closed, \"RefundEscrow: beneficiary can only withdraw while closed\");\n _beneficiary.transfer(address(this).balance);\n }\n\n /**\n * @dev Returns whether refundees can withdraw their deposits (be refunded). The overridden function receives a\n * 'payee' argument, but we ignore it here since the condition is global, not per-payee.\n */\n function withdrawalAllowed(address) public view override returns (bool) {\n return _state == State.Refunding;\n }\n}\n", "sourcePath": "contracts/payment/escrow/RefundEscrow.sol", "sourceMap": "573:2439:72:-:0;;;893:209;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;856:17:7;876:12;:10;;;:12;;:::i;:::-;856:32;;907:9;898:6;;:18;;;;;;;;;;;;;;;;;;964:9;931:43;;960:1;931:43;;;;;;;;;;;;831:150;976:1:72;953:25;;:11;:25;;;;945:83;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;1053:11;1038:12;;:26;;;;;;;;;;;;;;;;;;1083:12;1074:6;;:21;;;;;;;;;;;;;;;;;;;;;;;;893:209;573:2439;;590:104:0;643:15;677:10;670:17;;590:104;:::o;573:2439:72:-;;;;;;;", "deployedSourceMap": 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"abi": [ { "inputs": [ { "internalType": "address payable", "name": "beneficiary", "type": "address" } ], "stateMutability": "nonpayable", "type": "constructor" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "payee", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "weiAmount", "type": "uint256" } ], "name": "Deposited", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "previousOwner", "type": "address" }, { "indexed": true, "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "OwnershipTransferred", "type": "event" }, { "anonymous": false, "inputs": [], "name": "RefundsClosed", "type": "event" }, { "anonymous": false, "inputs": [], "name": "RefundsEnabled", "type": "event" }, { "anonymous": false, "inputs": [ { "indexed": true, "internalType": "address", "name": "payee", "type": "address" }, { "indexed": false, "internalType": "uint256", "name": "weiAmount", "type": "uint256" } ], "name": "Withdrawn", "type": "event" }, { "inputs": [], "name": "beneficiary", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "beneficiaryWithdraw", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "name": "close", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "refundee", "type": "address" } ], "name": "deposit", "outputs": [], "stateMutability": "payable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "payee", "type": "address" } ], "name": "depositsOf", "outputs": [ { "internalType": "uint256", "name": "", "type": "uint256" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "enableRefunds", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "name": "owner", "outputs": [ { "internalType": "address", "name": "", "type": "address" } ], "stateMutability": "view", "type": "function" }, { "inputs": [], "name": "renounceOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [], "name": "state", "outputs": [ { "internalType": "enum RefundEscrow.State", "name": "", "type": "uint8" } ], "stateMutability": "view", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "newOwner", "type": "address" } ], "name": "transferOwnership", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address payable", "name": "payee", "type": "address" } ], "name": "withdraw", "outputs": [], "stateMutability": "nonpayable", "type": "function" }, { "inputs": [ { "internalType": "address", "name": "", "type": "address" } ], "name": "withdrawalAllowed", "outputs": [ { "internalType": "bool", "name": "", "type": "bool" } ], "stateMutability": "view", "type": "function" } ], "ast": { "absolutePath": "contracts/payment/escrow/RefundEscrow.sol", "exportedSymbols": { "RefundEscrow": [ 6822 ] }, "id": 6823, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 6655, "literals": [ "solidity", "^", "0.7", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:72" }, { "absolutePath": "contracts/payment/escrow/ConditionalEscrow.sol", "file": "./ConditionalEscrow.sol", "id": 6656, "nodeType": "ImportDirective", "scope": 6823, "sourceUnit": 6549, "src": "58:33:72", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [ { "arguments": null, "baseName": { "contractScope": null, "id": 6658, "name": "ConditionalEscrow", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 6548, "src": "598:17:72", "typeDescriptions": { "typeIdentifier": "t_contract$_ConditionalEscrow_$6548", "typeString": "contract ConditionalEscrow" } }, "id": 6659, "nodeType": "InheritanceSpecifier", "src": "598:17:72" } ], "contractDependencies": [ 22, 1576, 6548, 6653 ], "contractKind": "contract", "documentation": { "id": 6657, "nodeType": "StructuredDocumentation", "src": "93:479:72", "text": " @title RefundEscrow\n @dev Escrow that holds funds for a beneficiary, deposited from multiple\n parties.\n @dev Intended usage: See {Escrow}. Same usage guidelines apply here.\n @dev The owner account (that is, the contract that instantiates this\n contract) may deposit, close the deposit period, and allow for either\n withdrawal by the beneficiary, or refunds to the depositors. All interactions\n with `RefundEscrow` will be made through the owner contract." }, "fullyImplemented": true, "id": 6822, "linearizedBaseContracts": [ 6822, 6548, 6653, 1576, 22 ], "name": "RefundEscrow", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "RefundEscrow.State", "id": 6663, "members": [ { "id": 6660, "name": "Active", "nodeType": "EnumValue", "src": "635:6:72" }, { "id": 6661, "name": "Refunding", "nodeType": "EnumValue", "src": "643:9:72" }, { "id": 6662, "name": "Closed", "nodeType": "EnumValue", "src": "654:6:72" } ], "name": "State", "nodeType": "EnumDefinition", "src": "622:40:72" }, { "anonymous": false, "documentation": null, "id": 6665, "name": "RefundsClosed", "nodeType": "EventDefinition", "parameters": { "id": 6664, "nodeType": "ParameterList", "parameters": [], "src": "687:2:72" }, "src": "668:22:72" }, { "anonymous": false, "documentation": null, "id": 6667, "name": "RefundsEnabled", "nodeType": "EventDefinition", "parameters": { "id": 6666, 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"leftHandSide": { "argumentTypes": null, "id": 6687, "name": "_beneficiary", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6671, "src": "1038:12:72", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 6688, "name": "beneficiary", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6674, "src": "1053:11:72", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "src": "1038:26:72", "typeDescriptions": { "typeIdentifier": "t_address_payable", "typeString": "address payable" } }, "id": 6690, "nodeType": "ExpressionStatement", "src": "1038:26:72" }, { "expression": { "argumentTypes": null, "id": 6694, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 6691, "name": "_state", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6669, "src": "1074:6:72", "typeDescriptions": { "typeIdentifier": "t_enum$_State_$6663", "typeString": "enum RefundEscrow.State" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 6692, "name": "State", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6663, "src": "1083:5:72", "typeDescriptions": { "typeIdentifier": "t_type$_t_enum$_State_$6663_$", "typeString": "type(enum RefundEscrow.State)" } }, "id": 6693, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberName": "Active", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1083:12:72", "typeDescriptions": { "typeIdentifier": "t_enum$_State_$6663", "typeString": "enum RefundEscrow.State" } }, "src": "1074:21:72", "typeDescriptions": { "typeIdentifier": "t_enum$_State_$6663", 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