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"src": "2603:8:3" } ] }, "documentation": "@dev Returns the multiplication of two unsigned integers, reverting on\noverflow.\n * Counterpart to Solidity's `*` operator.\n * Requirements:\n- Multiplication cannot overflow.", "id": 485, "implemented": true, "kind": "function", "modifiers": [], "name": "mul", "nodeType": "FunctionDefinition", "parameters": { "id": 456, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 453, "name": "a", "nodeType": "VariableDeclaration", "scope": 485, "src": "2172:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 452, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "2172:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 455, "name": "b", "nodeType": "VariableDeclaration", "scope": 485, "src": "2183:9:3", 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"names": [], "nodeType": "FunctionCall", "src": "3157:39:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 493, "id": 499, "nodeType": "Return", "src": "3150:46:3" } ] }, "documentation": "@dev Returns the integer division of two unsigned integers. Reverts on\ndivision by zero. The result is rounded towards zero.\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n`revert` opcode (which leaves remaining gas untouched) while Solidity\nuses an invalid opcode to revert (consuming all remaining gas).\n * Requirements:\n- The divisor cannot be zero.", "id": 501, "implemented": true, "kind": "function", "modifiers": [], "name": "div", "nodeType": "FunctionDefinition", "parameters": { "id": 490, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 487, "name": "a", "nodeType": "VariableDeclaration", "scope": 501, "src": "3086:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 486, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3086:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 489, "name": "b", "nodeType": "VariableDeclaration", "scope": 501, "src": "3097:9:3", 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"functionReturnParameters": 511, "id": 526, "nodeType": "Return", "src": "4041:8:3" } ] }, "documentation": "@dev Returns the integer division of two unsigned integers. Reverts with custom message on\ndivision by zero. The result is rounded towards zero.\n * Counterpart to Solidity's `/` operator. Note: this function uses a\n`revert` opcode (which leaves remaining gas untouched) while Solidity\nuses an invalid opcode to revert (consuming all remaining gas).\n * Requirements:\n- The divisor cannot be zero.\n * _Available since v2.4.0._", "id": 528, "implemented": true, "kind": "function", "modifiers": [], "name": "div", "nodeType": "FunctionDefinition", "parameters": { "id": 508, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 503, "name": "a", "nodeType": "VariableDeclaration", "scope": 528, "src": "3731:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 502, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3731:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 505, "name": "b", "nodeType": "VariableDeclaration", "scope": 528, "src": "3742:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 504, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3742:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 507, "name": "errorMessage", "nodeType": "VariableDeclaration", "scope": 528, "src": "3753:26:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 506, "name": "string", "nodeType": "ElementaryTypeName", "src": "3753:6:3", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "value": null, "visibility": "internal" } ], "src": "3730:50:3" }, "returnParameters": { "id": 511, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 510, "name": "", "nodeType": "VariableDeclaration", "scope": 528, "src": "3804:7:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 509, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "3804:7:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "3803:9:3" }, "scope": 568, "src": "3718:338:3", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 543, "nodeType": "Block", "src": "4567:61:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 538, "name": "a", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 530, "src": "4588:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 539, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 532, "src": "4591:1:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "hexValue": "536166654d6174683a206d6f64756c6f206279207a65726f", "id": 540, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "4594:26:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_stringliteral_726e51f7b81fce0a68f5f214f445e275313b20b1633f08ce954ee39abf8d7832", "typeString": "literal_string \"SafeMath: modulo by zero\"" }, "value": "SafeMath: modulo by zero" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_stringliteral_726e51f7b81fce0a68f5f214f445e275313b20b1633f08ce954ee39abf8d7832", "typeString": "literal_string \"SafeMath: modulo by zero\"" } ], "id": 537, "name": "mod", "nodeType": "Identifier", "overloadedDeclarations": [ 544, 567 ], "referencedDeclaration": 567, "src": "4584:3:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$_t_string_memory_ptr_$returns$_t_uint256_$", "typeString": "function (uint256,uint256,string memory) pure returns (uint256)" } }, "id": 541, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4584:37:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 536, "id": 542, "nodeType": "Return", "src": "4577:44:3" } ] }, "documentation": "@dev Returns the remainder of dividing two unsigned integers. 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This can easily result in bugs, because programmers usually assume that an overflow raises an error, which is the standard behavior in high level programming languages. `SafeMath` restores this intuition by reverting the transaction when an operation overflows. * Using this library instead of the unchecked operations eliminates an entire class of bugs, so it's recommended to use it always.", "methods": {} }, "userdoc": { "methods": {} } }