{ "contractName": "Proxy", "abi": [ { "payable": true, "stateMutability": "payable", "type": "fallback" } ], "bytecode": "0x", "deployedBytecode": "0x", "sourceMap": "", "deployedSourceMap": "", "source": "pragma solidity ^0.4.24;\n\n/**\n * @title Proxy\n * @dev Implements delegation of calls to other contracts, with proper\n * forwarding of return values and bubbling of failures.\n * It defines a fallback function that delegates all calls to the address\n * returned by the abstract _implementation() internal function.\n */\ncontract Proxy {\n /**\n * @dev Fallback function.\n * Implemented entirely in `_fallback`.\n */\n function () payable external {\n _fallback();\n }\n\n /**\n * @return The Address of the implementation.\n */\n function _implementation() internal view returns (address);\n\n /**\n * @dev Delegates execution to an implementation contract.\n * This is a low level function that doesn't return to its internal call site.\n * It will return to the external caller whatever the implementation returns.\n * @param implementation Address to delegate.\n */\n function _delegate(address implementation) internal {\n assembly {\n // Copy msg.data. We take full control of memory in this inline assembly\n // block because it will not return to Solidity code. We overwrite the\n // Solidity scratch pad at memory position 0.\n calldatacopy(0, 0, calldatasize)\n\n // Call the implementation.\n // out and outsize are 0 because we don't know the size yet.\n let result := delegatecall(gas, implementation, 0, calldatasize, 0, 0)\n\n // Copy the returned data.\n returndatacopy(0, 0, returndatasize)\n\n switch result\n // delegatecall returns 0 on error.\n case 0 { revert(0, returndatasize) }\n default { return(0, returndatasize) }\n }\n }\n\n /**\n * @dev Function that is run as the first thing in the fallback function.\n * Can be redefined in derived contracts to add functionality.\n * Redefinitions must call super._willFallback().\n */\n function _willFallback() internal {\n }\n\n /**\n * @dev fallback implementation.\n * Extracted to enable manual triggering.\n */\n function _fallback() internal {\n _willFallback();\n _delegate(_implementation());\n }\n}\n", "sourcePath": "/Users/yoonjae/WebstormProjects/zos/packages/lib/contracts/upgradeability/Proxy.sol", "ast": { "absolutePath": "/Users/yoonjae/WebstormProjects/zos/packages/lib/contracts/upgradeability/Proxy.sol", "exportedSymbols": { "Proxy": [ 2850 ] }, "id": 2851, "nodeType": "SourceUnit", "nodes": [ { "id": 2814, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:24" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": "@title Proxy\n@dev Implements delegation of calls to other contracts, with proper\nforwarding of return values and bubbling of failures.\nIt defines a fallback function that delegates all calls to the address\nreturned by the abstract _implementation() internal function.", "fullyImplemented": false, "id": 2850, "linearizedBaseContracts": [ 2850 ], "name": "Proxy", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 2820, "nodeType": "Block", "src": "448:22:24", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 2817, "name": "_fallback", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2849, "src": "454:9:24", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$__$returns$__$", "typeString": "function ()" } }, "id": 2818, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "454:11:24", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2819, "nodeType": "ExpressionStatement", "src": "454:11:24" } ] }, "documentation": "@dev Fallback function.\nImplemented entirely in `_fallback`.", "id": 2821, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 2815, "nodeType": "ParameterList", "parameters": [], "src": "428:2:24" }, "payable": true, "returnParameters": { "id": 2816, "nodeType": "ParameterList", "parameters": [], "src": "448:0:24" }, "scope": 2850, "src": "419:51:24", "stateMutability": "payable", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": "@return The Address of the implementation.", "id": 2826, "implemented": false, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "_implementation", "nodeType": "FunctionDefinition", "parameters": { "id": 2822, "nodeType": "ParameterList", "parameters": [], "src": "558:2:24" }, "payable": false, "returnParameters": { "id": 2825, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2824, "name": "", "nodeType": "VariableDeclaration", "scope": 2826, "src": "584:7:24", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2823, "name": "address", "nodeType": "ElementaryTypeName", "src": "584:7:24", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "583:9:24" }, "scope": 2850, "src": "534:59:24", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2832, "nodeType": "Block", "src": "931:679:24", "statements": [ { "externalReferences": [ { "implementation": { "declaration": 2828, "isOffset": false, "isSlot": false, "src": "1335:14:24", "valueSize": 1 } } ], "id": 2831, "nodeType": "InlineAssembly", "operations": "{\n calldatacopy(0, 0, calldatasize())\n let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)\n returndatacopy(0, 0, returndatasize())\n switch result\n case 0 {\n revert(0, returndatasize())\n }\n default {\n return(0, returndatasize())\n }\n}", "src": "937:673:24" } ] }, "documentation": "@dev Delegates execution to an implementation contract.\nThis is a low level function that doesn't return to its internal call site.\nIt will return to the external caller whatever the implementation returns.\n@param implementation Address to delegate.", "id": 2833, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_delegate", "nodeType": "FunctionDefinition", "parameters": { "id": 2829, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2828, "name": "implementation", "nodeType": "VariableDeclaration", "scope": 2833, "src": "898:22:24", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2827, "name": "address", "nodeType": "ElementaryTypeName", "src": "898:7:24", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "897:24:24" }, "payable": false, "returnParameters": { "id": 2830, "nodeType": "ParameterList", "parameters": [], "src": "931:0:24" }, "scope": 2850, "src": "879:731:24", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2836, "nodeType": "Block", "src": "1853:5:24", "statements": [] }, "documentation": "@dev Function that is run as the first thing in the fallback function.\nCan be redefined in derived contracts to add functionality.\nRedefinitions must call super._willFallback().", "id": 2837, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_willFallback", "nodeType": "FunctionDefinition", "parameters": { "id": 2834, "nodeType": "ParameterList", "parameters": [], "src": "1841:2:24" }, "payable": false, "returnParameters": { "id": 2835, "nodeType": "ParameterList", "parameters": [], "src": "1853:0:24" }, "scope": 2850, "src": "1819:39:24", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2848, "nodeType": "Block", "src": "1983:60:24", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 2840, "name": "_willFallback", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2837, "src": "1989:13:24", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$__$returns$__$", "typeString": "function ()" } }, "id": 2841, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1989:15:24", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2842, "nodeType": "ExpressionStatement", "src": "1989:15:24" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 2844, "name": "_implementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2826, "src": "2020:15:24", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 2845, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2020:17:24", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 2843, "name": "_delegate", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2833, "src": "2010:9:24", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 2846, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2010:28:24", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2847, "nodeType": "ExpressionStatement", "src": "2010:28:24" } ] }, "documentation": "@dev fallback implementation.\nExtracted to enable manual triggering.", "id": 2849, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_fallback", "nodeType": "FunctionDefinition", "parameters": { "id": 2838, "nodeType": "ParameterList", "parameters": [], "src": "1971:2:24" }, "payable": false, "returnParameters": { "id": 2839, "nodeType": "ParameterList", "parameters": [], "src": "1983:0:24" }, "scope": 2850, "src": "1953:90:24", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" } ], "scope": 2851, "src": "317:1728:24" } ], "src": "0:2046:24" }, "legacyAST": { "absolutePath": "/Users/yoonjae/WebstormProjects/zos/packages/lib/contracts/upgradeability/Proxy.sol", "exportedSymbols": { "Proxy": [ 2850 ] }, "id": 2851, "nodeType": "SourceUnit", "nodes": [ { "id": 2814, "literals": [ "solidity", "^", "0.4", ".24" ], "nodeType": "PragmaDirective", "src": "0:24:24" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "contract", "documentation": "@title Proxy\n@dev Implements delegation of calls to other contracts, with proper\nforwarding of return values and bubbling of failures.\nIt defines a fallback function that delegates all calls to the address\nreturned by the abstract _implementation() internal function.", "fullyImplemented": false, "id": 2850, "linearizedBaseContracts": [ 2850 ], "name": "Proxy", "nodeType": "ContractDefinition", "nodes": [ { "body": { "id": 2820, "nodeType": "Block", "src": "448:22:24", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 2817, "name": "_fallback", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2849, "src": "454:9:24", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$__$returns$__$", "typeString": "function ()" } }, "id": 2818, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "454:11:24", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2819, "nodeType": "ExpressionStatement", "src": "454:11:24" } ] }, "documentation": "@dev Fallback function.\nImplemented entirely in `_fallback`.", "id": 2821, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "", "nodeType": "FunctionDefinition", "parameters": { "id": 2815, "nodeType": "ParameterList", "parameters": [], "src": "428:2:24" }, "payable": true, "returnParameters": { "id": 2816, "nodeType": "ParameterList", "parameters": [], "src": "448:0:24" }, "scope": 2850, "src": "419:51:24", "stateMutability": "payable", "superFunction": null, "visibility": "external" }, { "body": null, "documentation": "@return The Address of the implementation.", "id": 2826, "implemented": false, "isConstructor": false, "isDeclaredConst": true, "modifiers": [], "name": "_implementation", "nodeType": "FunctionDefinition", "parameters": { "id": 2822, "nodeType": "ParameterList", "parameters": [], "src": "558:2:24" }, "payable": false, "returnParameters": { "id": 2825, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2824, "name": "", "nodeType": "VariableDeclaration", "scope": 2826, "src": "584:7:24", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2823, "name": "address", "nodeType": "ElementaryTypeName", "src": "584:7:24", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "583:9:24" }, "scope": 2850, "src": "534:59:24", "stateMutability": "view", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2832, "nodeType": "Block", "src": "931:679:24", "statements": [ { "externalReferences": [ { "implementation": { "declaration": 2828, "isOffset": false, "isSlot": false, "src": "1335:14:24", "valueSize": 1 } } ], "id": 2831, "nodeType": "InlineAssembly", "operations": "{\n calldatacopy(0, 0, calldatasize())\n let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)\n returndatacopy(0, 0, returndatasize())\n switch result\n case 0 {\n revert(0, returndatasize())\n }\n default {\n return(0, returndatasize())\n }\n}", "src": "937:673:24" } ] }, "documentation": "@dev Delegates execution to an implementation contract.\nThis is a low level function that doesn't return to its internal call site.\nIt will return to the external caller whatever the implementation returns.\n@param implementation Address to delegate.", "id": 2833, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_delegate", "nodeType": "FunctionDefinition", "parameters": { "id": 2829, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2828, "name": "implementation", "nodeType": "VariableDeclaration", "scope": 2833, "src": "898:22:24", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" }, "typeName": { "id": 2827, "name": "address", "nodeType": "ElementaryTypeName", "src": "898:7:24", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } }, "value": null, "visibility": "internal" } ], "src": "897:24:24" }, "payable": false, "returnParameters": { "id": 2830, "nodeType": "ParameterList", "parameters": [], "src": "931:0:24" }, "scope": 2850, "src": "879:731:24", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2836, "nodeType": "Block", "src": "1853:5:24", "statements": [] }, "documentation": "@dev Function that is run as the first thing in the fallback function.\nCan be redefined in derived contracts to add functionality.\nRedefinitions must call super._willFallback().", "id": 2837, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_willFallback", "nodeType": "FunctionDefinition", "parameters": { "id": 2834, "nodeType": "ParameterList", "parameters": [], "src": "1841:2:24" }, "payable": false, "returnParameters": { "id": 2835, "nodeType": "ParameterList", "parameters": [], "src": "1853:0:24" }, "scope": 2850, "src": "1819:39:24", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2848, "nodeType": "Block", "src": "1983:60:24", "statements": [ { "expression": { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 2840, "name": "_willFallback", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2837, "src": "1989:13:24", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$__$returns$__$", "typeString": "function ()" } }, "id": 2841, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1989:15:24", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2842, "nodeType": "ExpressionStatement", "src": "1989:15:24" }, { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "arguments": [], "expression": { "argumentTypes": [], "id": 2844, "name": "_implementation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2826, "src": "2020:15:24", "typeDescriptions": { "typeIdentifier": "t_function_internal_view$__$returns$_t_address_$", "typeString": "function () view returns (address)" } }, "id": 2845, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2020:17:24", "typeDescriptions": { "typeIdentifier": "t_address", "typeString": "address" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_address", "typeString": "address" } ], "id": 2843, "name": "_delegate", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2833, "src": "2010:9:24", "typeDescriptions": { "typeIdentifier": "t_function_internal_nonpayable$_t_address_$returns$__$", "typeString": "function (address)" } }, "id": 2846, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2010:28:24", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2847, "nodeType": "ExpressionStatement", "src": "2010:28:24" } ] }, "documentation": "@dev fallback implementation.\nExtracted to enable manual triggering.", "id": 2849, "implemented": true, "isConstructor": false, "isDeclaredConst": false, "modifiers": [], "name": "_fallback", "nodeType": "FunctionDefinition", "parameters": { "id": 2838, "nodeType": "ParameterList", "parameters": [], "src": "1971:2:24" }, "payable": false, "returnParameters": { "id": 2839, "nodeType": "ParameterList", "parameters": [], "src": "1983:0:24" }, "scope": 2850, "src": "1953:90:24", "stateMutability": "nonpayable", "superFunction": null, "visibility": "internal" } ], "scope": 2851, "src": "317:1728:24" } ], "src": "0:2046:24" }, "compiler": { "name": "solc", "version": "0.4.24+commit.e67f0147.Emscripten.clang" }, "networks": {}, "schemaVersion": "2.0.1", "updatedAt": "2019-02-15T10:15:15.424Z" }