{ "contractName": "Strings", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.8.0+commit.c7dfd78e\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"String operations.\",\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@openzeppelin/contracts/utils/Strings.sol\":\"Strings\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"@openzeppelin/contracts/utils/Strings.sol\":{\"keccak256\":\"0x391d3ba97ab6856a16b225d6ee29617ad15ff00db70f3b4df1ab5ea33aa47c9d\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://d636ba90bbbeed04a1ea7fe9ec2466757e30fd38ba2ca173636dbf69a518735e\",\"dweb:/ipfs/QmQwCB2BHnEuYR22PYt9HkpbgeFDhq4rHmaYqAZbX3WRC7\"]}},\"version\":1}", "bytecode": "0x60566050600b82828239805160001a6073146043577f4e487b7100000000000000000000000000000000000000000000000000000000600052600060045260246000fd5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea264697066735822122059cbc0fa3febd51933ba1ec1b15d5a0c0f0808817a68def7193edbefd1a1409364736f6c63430008000033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea264697066735822122059cbc0fa3febd51933ba1ec1b15d5a0c0f0808817a68def7193edbefd1a1409364736f6c63430008000033", "immutableReferences": {}, "generatedSources": [], "deployedGeneratedSources": [], "sourceMap": "93:1885:11:-:0;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "93:1885:11:-:0;;;;;;;;", "source": "// SPDX-License-Identifier: MIT\n\npragma solidity ^0.8.0;\n\n/**\n * @dev String operations.\n */\nlibrary Strings {\n bytes16 private constant _HEX_SYMBOLS = \"0123456789abcdef\";\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` decimal representation.\n */\n function toString(uint256 value) internal pure returns (string memory) {\n // Inspired by OraclizeAPI's implementation - MIT licence\n // https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol\n\n if (value == 0) {\n return \"0\";\n }\n uint256 temp = value;\n uint256 digits;\n while (temp != 0) {\n digits++;\n temp /= 10;\n }\n bytes memory buffer = new bytes(digits);\n while (value != 0) {\n digits -= 1;\n buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));\n value /= 10;\n }\n return string(buffer);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.\n */\n function toHexString(uint256 value) internal pure returns (string memory) {\n if (value == 0) {\n return \"0x00\";\n }\n uint256 temp = value;\n uint256 length = 0;\n while (temp != 0) {\n length++;\n temp >>= 8;\n }\n return toHexString(value, length);\n }\n\n /**\n * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.\n */\n function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {\n bytes memory buffer = new bytes(2 * length + 2);\n buffer[0] = \"0\";\n buffer[1] = \"x\";\n for (uint256 i = 2 * length + 1; i > 1; --i) {\n buffer[i] = _HEX_SYMBOLS[value & 0xf];\n value >>= 4;\n }\n require(value == 0, \"Strings: hex length insufficient\");\n return string(buffer);\n }\n}\n", "sourcePath": "@openzeppelin\\contracts\\utils\\Strings.sol", "ast": { "absolutePath": "@openzeppelin/contracts/utils/Strings.sol", "exportedSymbols": { "Strings": [ 2106 ] }, "id": 2107, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 1905, "literals": [ "solidity", "^", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:11" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 1906, "nodeType": "StructuredDocumentation", "src": "58:34:11", "text": " @dev String operations." }, "fullyImplemented": true, "id": 2106, "linearizedBaseContracts": [ 2106 ], "name": "Strings", "nodeType": "ContractDefinition", "nodes": [ { "constant": true, "id": 1909, "mutability": "constant", "name": "_HEX_SYMBOLS", "nodeType": "VariableDeclaration", "scope": 2106, "src": "115:58:11", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes16", "typeString": "bytes16" }, "typeName": { "id": 1907, "name": "bytes16", "nodeType": "ElementaryTypeName", "src": "115:7:11", "typeDescriptions": { "typeIdentifier": "t_bytes16", "typeString": "bytes16" } }, "value": { "hexValue": "30313233343536373839616263646566", "id": 1908, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "155:18:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_cb29997ed99ead0db59ce4d12b7d3723198c827273e5796737c926d78019c39f", "typeString": "literal_string \"0123456789abcdef\"" }, "value": "0123456789abcdef" }, "visibility": "private" }, { "body": { "id": 1987, "nodeType": "Block", "src": "346:632:11", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1919, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1917, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "548:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 1918, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "557:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "548:10:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1923, "nodeType": "IfStatement", "src": "544:51:11", "trueBody": { "id": 1922, "nodeType": "Block", "src": "560:35:11", "statements": [ { "expression": { "hexValue": "30", "id": 1920, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "581:3:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_044852b2a670ade5407e78fb2863c51de9fcb96542a07186fe3aeda6bb8a116d", "typeString": "literal_string \"0\"" }, "value": "0" }, "functionReturnParameters": 1916, "id": 1921, "nodeType": "Return", "src": "574:10:11" } ] } }, { "assignments": [ 1925 ], "declarations": [ { "constant": false, "id": 1925, "mutability": "mutable", "name": "temp", "nodeType": "VariableDeclaration", "scope": 1987, "src": "604:12:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1924, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "604:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 1927, "initialValue": { "id": 1926, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "619:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "604:20:11" }, { "assignments": [ 1929 ], "declarations": [ { "constant": false, "id": 1929, "mutability": "mutable", "name": "digits", "nodeType": "VariableDeclaration", "scope": 1987, "src": "634:14:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1928, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "634:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 1930, "nodeType": "VariableDeclarationStatement", "src": "634:14:11" }, { "body": { "id": 1941, "nodeType": "Block", "src": "676:57:11", "statements": [ { "expression": { "id": 1935, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "++", "prefix": false, "src": "690:8:11", "subExpression": { "id": 1934, "name": "digits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1929, "src": "690:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1936, "nodeType": "ExpressionStatement", "src": "690:8:11" }, { "expression": { "id": 1939, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1937, "name": "temp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1925, "src": "712:4:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "/=", "rightHandSide": { "hexValue": "3130", "id": 1938, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "720:2:11", "typeDescriptions": { "typeIdentifier": "t_rational_10_by_1", "typeString": "int_const 10" }, "value": "10" }, "src": "712:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1940, "nodeType": "ExpressionStatement", "src": "712:10:11" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1933, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1931, "name": "temp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1925, "src": "665:4:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "30", "id": 1932, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "673:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "665:9:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1942, "nodeType": "WhileStatement", "src": "658:75:11" }, { "assignments": [ 1944 ], "declarations": [ { "constant": false, "id": 1944, "mutability": "mutable", "name": "buffer", "nodeType": "VariableDeclaration", "scope": 1987, "src": "742:19:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1943, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "742:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "id": 1949, "initialValue": { "arguments": [ { "id": 1947, "name": "digits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1929, "src": "774:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1946, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "NewExpression", "src": "764:9:11", "typeDescriptions": { "typeIdentifier": "t_function_objectcreation_pure$_t_uint256_$returns$_t_bytes_memory_ptr_$", "typeString": "function (uint256) pure returns (bytes memory)" }, "typeName": { "id": 1945, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "768:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, "id": 1948, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "764:17:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "742:39:11" }, { "body": { "id": 1980, "nodeType": "Block", "src": "810:131:11", "statements": [ { "expression": { "id": 1955, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1953, "name": "digits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1929, "src": "824:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "hexValue": "31", "id": 1954, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "834:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "824:11:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1956, "nodeType": "ExpressionStatement", "src": "824:11:11" }, { "expression": { "id": 1974, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 1957, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1944, "src": "849:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1959, "indexExpression": { "id": 1958, "name": "digits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1929, "src": "856:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "849:14:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1971, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "3438", "id": 1964, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "879:2:11", "typeDescriptions": { "typeIdentifier": "t_rational_48_by_1", "typeString": "int_const 48" }, "value": "48" }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1969, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1967, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "892:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "hexValue": "3130", "id": 1968, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "900:2:11", "typeDescriptions": { "typeIdentifier": "t_rational_10_by_1", "typeString": "int_const 10" }, "value": "10" }, "src": "892:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1966, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "884:7:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 1965, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "884:7:11", "typeDescriptions": {} } }, "id": 1970, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "884:19:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "879:24:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1963, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "873:5:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint8_$", "typeString": "type(uint8)" }, "typeName": { "id": 1962, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "873:5:11", "typeDescriptions": {} } }, "id": 1972, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "873:31:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint8", "typeString": "uint8" } ], "id": 1961, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "866:6:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes1_$", "typeString": "type(bytes1)" }, "typeName": { "id": 1960, "name": "bytes1", "nodeType": "ElementaryTypeName", "src": "866:6:11", "typeDescriptions": {} } }, "id": 1973, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "866:39:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "src": "849:56:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "id": 1975, "nodeType": "ExpressionStatement", "src": "849:56:11" }, { "expression": { "id": 1978, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1976, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "919:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "/=", "rightHandSide": { "hexValue": "3130", "id": 1977, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "928:2:11", "typeDescriptions": { "typeIdentifier": "t_rational_10_by_1", "typeString": "int_const 10" }, "value": "10" }, "src": "919:11:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1979, "nodeType": "ExpressionStatement", "src": "919:11:11" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1952, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1950, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "798:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "30", "id": 1951, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "807:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "798:10:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1981, "nodeType": "WhileStatement", "src": "791:150:11" }, { "expression": { "arguments": [ { "id": 1984, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1944, "src": "964:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 1983, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "957:6:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 1982, "name": "string", "nodeType": "ElementaryTypeName", "src": "957:6:11", "typeDescriptions": {} } }, "id": 1985, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "957:14:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 1916, "id": 1986, "nodeType": "Return", "src": "950:21:11" } ] }, "documentation": { "id": 1910, "nodeType": "StructuredDocumentation", "src": "180:90:11", "text": " @dev Converts a `uint256` to its ASCII `string` decimal representation." }, "id": 1988, "implemented": true, "kind": "function", "modifiers": [], "name": "toString", "nodeType": "FunctionDefinition", "parameters": { "id": 1913, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1912, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 1988, "src": "293:13:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1911, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "293:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "292:15:11" }, "returnParameters": { "id": 1916, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1915, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 1988, "src": "331:13:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 1914, "name": "string", "nodeType": "ElementaryTypeName", "src": "331:6:11", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "330:15:11" }, "scope": 2106, "src": "275:703:11", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 2028, "nodeType": "Block", "src": "1157:255:11", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1998, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1996, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1991, "src": "1171:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 1997, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1180:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1171:10:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 2002, "nodeType": "IfStatement", "src": "1167:54:11", "trueBody": { "id": 2001, "nodeType": "Block", "src": "1183:38:11", "statements": [ { "expression": { "hexValue": "30783030", "id": 1999, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1204:6:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_27489e20a0060b723a1748bdff5e44570ee9fae64141728105692eac6031e8a4", "typeString": "literal_string \"0x00\"" }, "value": "0x00" }, "functionReturnParameters": 1995, "id": 2000, "nodeType": "Return", "src": "1197:13:11" } ] } }, { "assignments": [ 2004 ], "declarations": [ { "constant": false, "id": 2004, "mutability": "mutable", "name": "temp", "nodeType": "VariableDeclaration", "scope": 2028, "src": "1230:12:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2003, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1230:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 2006, "initialValue": { "id": 2005, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1991, "src": "1245:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "1230:20:11" }, { "assignments": [ 2008 ], "declarations": [ { "constant": false, "id": 2008, "mutability": "mutable", "name": "length", "nodeType": "VariableDeclaration", "scope": 2028, "src": "1260:14:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2007, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1260:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 2010, "initialValue": { "hexValue": "30", "id": 2009, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1277:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "1260:18:11" }, { "body": { "id": 2021, "nodeType": "Block", "src": "1306:57:11", "statements": [ { "expression": { "id": 2015, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "++", "prefix": false, "src": "1320:8:11", "subExpression": { "id": 2014, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2008, "src": "1320:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2016, "nodeType": "ExpressionStatement", "src": "1320:8:11" }, { "expression": { "id": 2019, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 2017, "name": "temp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2004, "src": "1342:4:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": ">>=", "rightHandSide": { "hexValue": "38", "id": 2018, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1351:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_8_by_1", "typeString": "int_const 8" }, "value": "8" }, "src": "1342:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2020, "nodeType": "ExpressionStatement", "src": "1342:10:11" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2013, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2011, "name": "temp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2004, "src": "1295:4:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "30", "id": 2012, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1303:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1295:9:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 2022, "nodeType": "WhileStatement", "src": "1288:75:11" }, { "expression": { "arguments": [ { "id": 2024, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1991, "src": "1391:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 2025, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2008, "src": "1398:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2023, "name": "toHexString", "nodeType": "Identifier", "overloadedDeclarations": [ 2029, 2105 ], "referencedDeclaration": 2105, "src": "1379:11:11", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_string_memory_ptr_$", "typeString": "function (uint256,uint256) pure returns (string memory)" } }, "id": 2026, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1379:26:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 1995, "id": 2027, "nodeType": "Return", "src": "1372:33:11" } ] }, "documentation": { "id": 1989, "nodeType": "StructuredDocumentation", "src": "984:94:11", "text": " @dev Converts a `uint256` to its ASCII `string` hexadecimal representation." }, "id": 2029, "implemented": true, "kind": "function", "modifiers": [], "name": "toHexString", "nodeType": "FunctionDefinition", "parameters": { "id": 1992, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1991, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 2029, "src": "1104:13:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1990, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1104:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1103:15:11" }, "returnParameters": { "id": 1995, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1994, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 2029, "src": "1142:13:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 1993, "name": "string", "nodeType": "ElementaryTypeName", "src": "1142:6:11", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "1141:15:11" }, "scope": 2106, "src": "1083:329:11", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 2104, "nodeType": "Block", "src": "1625:351:11", "statements": [ { "assignments": [ 2040 ], "declarations": [ { "constant": false, "id": 2040, "mutability": "mutable", "name": "buffer", "nodeType": "VariableDeclaration", "scope": 2104, "src": "1635:19:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2039, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1635:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "id": 2049, "initialValue": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2047, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2045, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "32", "id": 2043, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1667:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "id": 2044, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2034, "src": "1671:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1667:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 2046, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1680:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "1667:14:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2042, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "NewExpression", "src": "1657:9:11", "typeDescriptions": { "typeIdentifier": "t_function_objectcreation_pure$_t_uint256_$returns$_t_bytes_memory_ptr_$", "typeString": "function (uint256) pure returns (bytes memory)" }, "typeName": { "id": 2041, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1661:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, "id": 2048, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1657:25:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "1635:47:11" }, { "expression": { "id": 2054, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 2050, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2040, "src": "1692:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2052, "indexExpression": { "hexValue": "30", "id": 2051, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1699:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1692:9:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "hexValue": "30", "id": 2053, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1704:3:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_044852b2a670ade5407e78fb2863c51de9fcb96542a07186fe3aeda6bb8a116d", "typeString": "literal_string \"0\"" }, "value": "0" }, "src": "1692:15:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "id": 2055, "nodeType": "ExpressionStatement", "src": "1692:15:11" }, { "expression": { "id": 2060, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 2056, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2040, "src": "1717:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2058, "indexExpression": { "hexValue": "31", "id": 2057, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1724:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1717:9:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "hexValue": "78", "id": 2059, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1729:3:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_7521d1cadbcfa91eec65aa16715b94ffc1c9654ba57ea2ef1a2127bca1127a83", "typeString": "literal_string \"x\"" }, "value": "x" }, "src": "1717:15:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "id": 2061, "nodeType": "ExpressionStatement", "src": "1717:15:11" }, { "body": { "id": 2090, "nodeType": "Block", "src": "1787:87:11", "statements": [ { "expression": { "id": 2084, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 2076, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2040, "src": "1801:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2078, "indexExpression": { "id": 2077, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2063, "src": "1808:1:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1801:9:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "baseExpression": { "id": 2079, "name": "_HEX_SYMBOLS", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1909, "src": "1813:12:11", "typeDescriptions": { "typeIdentifier": "t_bytes16", "typeString": "bytes16" } }, "id": 2083, "indexExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2082, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2080, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2032, "src": "1826:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "hexValue": "307866", "id": 2081, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1834:3:11", "typeDescriptions": { "typeIdentifier": "t_rational_15_by_1", "typeString": "int_const 15" }, "value": "0xf" }, "src": "1826:11:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1813:25:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "src": "1801:37:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "id": 2085, "nodeType": "ExpressionStatement", "src": "1801:37:11" }, { "expression": { "id": 2088, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 2086, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2032, "src": "1852:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": ">>=", "rightHandSide": { "hexValue": "34", "id": 2087, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1862:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_4_by_1", "typeString": "int_const 4" }, "value": "4" }, "src": "1852:11:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2089, "nodeType": "ExpressionStatement", "src": "1852:11:11" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2072, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2070, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2063, "src": "1775:1:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "hexValue": "31", "id": 2071, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1779:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "1775:5:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 2091, "initializationExpression": { "assignments": [ 2063 ], "declarations": [ { "constant": false, "id": 2063, "mutability": "mutable", "name": "i", "nodeType": "VariableDeclaration", "scope": 2091, "src": "1747:9:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2062, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1747:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 2069, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2068, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2066, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "32", "id": 2064, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1759:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "id": 2065, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2034, "src": "1763:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1759:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "31", "id": 2067, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1772:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "1759:14:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "1747:26:11" }, "loopExpression": { "expression": { "id": 2074, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "--", "prefix": true, "src": "1782:3:11", "subExpression": { "id": 2073, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2063, "src": "1784:1:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2075, "nodeType": "ExpressionStatement", "src": "1782:3:11" }, "nodeType": "ForStatement", "src": "1742:132:11" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2095, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2093, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2032, "src": "1891:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 2094, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1900:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1891:10:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "537472696e67733a20686578206c656e67746820696e73756666696369656e74", "id": 2096, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1903:34:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_04fc88320d7c9f639317c75102c103ff0044d3075a5c627e24e76e5bbb2733c2", "typeString": "literal_string \"Strings: hex length insufficient\"" }, "value": "Strings: hex length insufficient" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_04fc88320d7c9f639317c75102c103ff0044d3075a5c627e24e76e5bbb2733c2", "typeString": "literal_string \"Strings: hex length insufficient\"" } ], "id": 2092, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "1883:7:11", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 2097, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1883:55:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2098, "nodeType": "ExpressionStatement", "src": "1883:55:11" }, { "expression": { "arguments": [ { "id": 2101, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2040, "src": "1962:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 2100, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1955:6:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 2099, "name": "string", "nodeType": "ElementaryTypeName", "src": "1955:6:11", "typeDescriptions": {} } }, "id": 2102, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1955:14:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 2038, "id": 2103, "nodeType": "Return", "src": "1948:21:11" } ] }, "documentation": { "id": 2030, "nodeType": "StructuredDocumentation", "src": "1418:112:11", "text": " @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length." }, "id": 2105, "implemented": true, "kind": "function", "modifiers": [], "name": "toHexString", "nodeType": "FunctionDefinition", "parameters": { "id": 2035, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2032, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 2105, "src": "1556:13:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2031, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1556:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 2034, "mutability": "mutable", "name": "length", "nodeType": "VariableDeclaration", "scope": 2105, "src": "1571:14:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2033, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1571:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1555:31:11" }, "returnParameters": { "id": 2038, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2037, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 2105, "src": "1610:13:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 2036, "name": "string", "nodeType": "ElementaryTypeName", "src": "1610:6:11", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "1609:15:11" }, "scope": 2106, "src": "1535:441:11", "stateMutability": "pure", "virtual": false, "visibility": "internal" } ], "scope": 2107, "src": "93:1885:11" } ], "src": "33:1946:11" }, "legacyAST": { "absolutePath": "@openzeppelin/contracts/utils/Strings.sol", "exportedSymbols": { "Strings": [ 2106 ] }, "id": 2107, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 1905, "literals": [ "solidity", "^", "0.8", ".0" ], "nodeType": "PragmaDirective", "src": "33:23:11" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 1906, "nodeType": "StructuredDocumentation", "src": "58:34:11", "text": " @dev String operations." }, "fullyImplemented": true, "id": 2106, "linearizedBaseContracts": [ 2106 ], "name": "Strings", "nodeType": "ContractDefinition", "nodes": [ { "constant": true, "id": 1909, "mutability": "constant", "name": "_HEX_SYMBOLS", "nodeType": "VariableDeclaration", "scope": 2106, "src": "115:58:11", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes16", "typeString": "bytes16" }, "typeName": { "id": 1907, "name": "bytes16", "nodeType": "ElementaryTypeName", "src": "115:7:11", "typeDescriptions": { "typeIdentifier": "t_bytes16", "typeString": "bytes16" } }, "value": { "hexValue": "30313233343536373839616263646566", "id": 1908, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "155:18:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_cb29997ed99ead0db59ce4d12b7d3723198c827273e5796737c926d78019c39f", "typeString": "literal_string \"0123456789abcdef\"" }, "value": "0123456789abcdef" }, "visibility": "private" }, { "body": { "id": 1987, "nodeType": "Block", "src": "346:632:11", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1919, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1917, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "548:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 1918, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "557:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "548:10:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1923, "nodeType": "IfStatement", "src": "544:51:11", "trueBody": { "id": 1922, "nodeType": "Block", "src": "560:35:11", "statements": [ { "expression": { "hexValue": "30", "id": 1920, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "581:3:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_044852b2a670ade5407e78fb2863c51de9fcb96542a07186fe3aeda6bb8a116d", "typeString": "literal_string \"0\"" }, "value": "0" }, "functionReturnParameters": 1916, "id": 1921, "nodeType": "Return", "src": "574:10:11" } ] } }, { "assignments": [ 1925 ], "declarations": [ { "constant": false, "id": 1925, "mutability": "mutable", "name": "temp", "nodeType": "VariableDeclaration", "scope": 1987, "src": "604:12:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1924, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "604:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 1927, "initialValue": { "id": 1926, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "619:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "604:20:11" }, { "assignments": [ 1929 ], "declarations": [ { "constant": false, "id": 1929, "mutability": "mutable", "name": "digits", "nodeType": "VariableDeclaration", "scope": 1987, "src": "634:14:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1928, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "634:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 1930, "nodeType": "VariableDeclarationStatement", "src": "634:14:11" }, { "body": { "id": 1941, "nodeType": "Block", "src": "676:57:11", "statements": [ { "expression": { "id": 1935, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "++", "prefix": false, "src": "690:8:11", "subExpression": { "id": 1934, "name": "digits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1929, "src": "690:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1936, "nodeType": "ExpressionStatement", "src": "690:8:11" }, { "expression": { "id": 1939, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1937, "name": "temp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1925, "src": "712:4:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "/=", "rightHandSide": { "hexValue": "3130", "id": 1938, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "720:2:11", "typeDescriptions": { "typeIdentifier": "t_rational_10_by_1", "typeString": "int_const 10" }, "value": "10" }, "src": "712:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1940, "nodeType": "ExpressionStatement", "src": "712:10:11" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1933, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1931, "name": "temp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1925, "src": "665:4:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "30", "id": 1932, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "673:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "665:9:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1942, "nodeType": "WhileStatement", "src": "658:75:11" }, { "assignments": [ 1944 ], "declarations": [ { "constant": false, "id": 1944, "mutability": "mutable", "name": "buffer", "nodeType": "VariableDeclaration", "scope": 1987, "src": "742:19:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 1943, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "742:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "id": 1949, "initialValue": { "arguments": [ { "id": 1947, "name": "digits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1929, "src": "774:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1946, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "NewExpression", "src": "764:9:11", "typeDescriptions": { "typeIdentifier": "t_function_objectcreation_pure$_t_uint256_$returns$_t_bytes_memory_ptr_$", "typeString": "function (uint256) pure returns (bytes memory)" }, "typeName": { "id": 1945, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "768:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, "id": 1948, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "764:17:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "742:39:11" }, { "body": { "id": 1980, "nodeType": "Block", "src": "810:131:11", "statements": [ { "expression": { "id": 1955, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1953, "name": "digits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1929, "src": "824:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "hexValue": "31", "id": 1954, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "834:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "824:11:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1956, "nodeType": "ExpressionStatement", "src": "824:11:11" }, { "expression": { "id": 1974, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 1957, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1944, "src": "849:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 1959, "indexExpression": { "id": 1958, "name": "digits", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1929, "src": "856:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "849:14:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1971, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "3438", "id": 1964, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "879:2:11", "typeDescriptions": { "typeIdentifier": "t_rational_48_by_1", "typeString": "int_const 48" }, "value": "48" }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1969, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1967, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "892:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "hexValue": "3130", "id": 1968, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "900:2:11", "typeDescriptions": { "typeIdentifier": "t_rational_10_by_1", "typeString": "int_const 10" }, "value": "10" }, "src": "892:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1966, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "884:7:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint256_$", "typeString": "type(uint256)" }, "typeName": { "id": 1965, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "884:7:11", "typeDescriptions": {} } }, "id": 1970, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "884:19:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "879:24:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 1963, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "873:5:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint8_$", "typeString": "type(uint8)" }, "typeName": { "id": 1962, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "873:5:11", "typeDescriptions": {} } }, "id": 1972, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "873:31:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint8", "typeString": "uint8" } ], "id": 1961, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "866:6:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes1_$", "typeString": "type(bytes1)" }, "typeName": { "id": 1960, "name": "bytes1", "nodeType": "ElementaryTypeName", "src": "866:6:11", "typeDescriptions": {} } }, "id": 1973, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "866:39:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "src": "849:56:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "id": 1975, "nodeType": "ExpressionStatement", "src": "849:56:11" }, { "expression": { "id": 1978, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 1976, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "919:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "/=", "rightHandSide": { "hexValue": "3130", "id": 1977, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "928:2:11", "typeDescriptions": { "typeIdentifier": "t_rational_10_by_1", "typeString": "int_const 10" }, "value": "10" }, "src": "919:11:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 1979, "nodeType": "ExpressionStatement", "src": "919:11:11" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1952, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1950, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1912, "src": "798:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "30", "id": 1951, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "807:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "798:10:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 1981, "nodeType": "WhileStatement", "src": "791:150:11" }, { "expression": { "arguments": [ { "id": 1984, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1944, "src": "964:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 1983, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "957:6:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 1982, "name": "string", "nodeType": "ElementaryTypeName", "src": "957:6:11", "typeDescriptions": {} } }, "id": 1985, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "957:14:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 1916, "id": 1986, "nodeType": "Return", "src": "950:21:11" } ] }, "documentation": { "id": 1910, "nodeType": "StructuredDocumentation", "src": "180:90:11", "text": " @dev Converts a `uint256` to its ASCII `string` decimal representation." }, "id": 1988, "implemented": true, "kind": "function", "modifiers": [], "name": "toString", "nodeType": "FunctionDefinition", "parameters": { "id": 1913, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1912, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 1988, "src": "293:13:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1911, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "293:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "292:15:11" }, "returnParameters": { "id": 1916, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1915, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 1988, "src": "331:13:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 1914, "name": "string", "nodeType": "ElementaryTypeName", "src": "331:6:11", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "330:15:11" }, "scope": 2106, "src": "275:703:11", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 2028, "nodeType": "Block", "src": "1157:255:11", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 1998, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 1996, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1991, "src": "1171:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 1997, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1180:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1171:10:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 2002, "nodeType": "IfStatement", "src": "1167:54:11", "trueBody": { "id": 2001, "nodeType": "Block", "src": "1183:38:11", "statements": [ { "expression": { "hexValue": "30783030", "id": 1999, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1204:6:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_27489e20a0060b723a1748bdff5e44570ee9fae64141728105692eac6031e8a4", "typeString": "literal_string \"0x00\"" }, "value": "0x00" }, "functionReturnParameters": 1995, "id": 2000, "nodeType": "Return", "src": "1197:13:11" } ] } }, { "assignments": [ 2004 ], "declarations": [ { "constant": false, "id": 2004, "mutability": "mutable", "name": "temp", "nodeType": "VariableDeclaration", "scope": 2028, "src": "1230:12:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2003, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1230:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 2006, "initialValue": { "id": 2005, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1991, "src": "1245:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "1230:20:11" }, { "assignments": [ 2008 ], "declarations": [ { "constant": false, "id": 2008, "mutability": "mutable", "name": "length", "nodeType": "VariableDeclaration", "scope": 2028, "src": "1260:14:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2007, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1260:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 2010, "initialValue": { "hexValue": "30", "id": 2009, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1277:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "nodeType": "VariableDeclarationStatement", "src": "1260:18:11" }, { "body": { "id": 2021, "nodeType": "Block", "src": "1306:57:11", "statements": [ { "expression": { "id": 2015, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "++", "prefix": false, "src": "1320:8:11", "subExpression": { "id": 2014, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2008, "src": "1320:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2016, "nodeType": "ExpressionStatement", "src": "1320:8:11" }, { "expression": { "id": 2019, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 2017, "name": "temp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2004, "src": "1342:4:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": ">>=", "rightHandSide": { "hexValue": "38", "id": 2018, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1351:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_8_by_1", "typeString": "int_const 8" }, "value": "8" }, "src": "1342:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2020, "nodeType": "ExpressionStatement", "src": "1342:10:11" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2013, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2011, "name": "temp", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2004, "src": "1295:4:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "30", "id": 2012, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1303:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1295:9:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 2022, "nodeType": "WhileStatement", "src": "1288:75:11" }, { "expression": { "arguments": [ { "id": 2024, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1991, "src": "1391:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 2025, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2008, "src": "1398:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2023, "name": "toHexString", "nodeType": "Identifier", "overloadedDeclarations": [ 2029, 2105 ], "referencedDeclaration": 2105, "src": "1379:11:11", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_string_memory_ptr_$", "typeString": "function (uint256,uint256) pure returns (string memory)" } }, "id": 2026, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1379:26:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 1995, "id": 2027, "nodeType": "Return", "src": "1372:33:11" } ] }, "documentation": { "id": 1989, "nodeType": "StructuredDocumentation", "src": "984:94:11", "text": " @dev Converts a `uint256` to its ASCII `string` hexadecimal representation." }, "id": 2029, "implemented": true, "kind": "function", "modifiers": [], "name": "toHexString", "nodeType": "FunctionDefinition", "parameters": { "id": 1992, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1991, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 2029, "src": "1104:13:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1990, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1104:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1103:15:11" }, "returnParameters": { "id": 1995, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1994, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 2029, "src": "1142:13:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 1993, "name": "string", "nodeType": "ElementaryTypeName", "src": "1142:6:11", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "1141:15:11" }, "scope": 2106, "src": "1083:329:11", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 2104, "nodeType": "Block", "src": "1625:351:11", "statements": [ { "assignments": [ 2040 ], "declarations": [ { "constant": false, "id": 2040, "mutability": "mutable", "name": "buffer", "nodeType": "VariableDeclaration", "scope": 2104, "src": "1635:19:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2039, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1635:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "id": 2049, "initialValue": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2047, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2045, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "32", "id": 2043, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1667:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "id": 2044, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2034, "src": "1671:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1667:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "32", "id": 2046, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1680:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "1667:14:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2042, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "NewExpression", "src": "1657:9:11", "typeDescriptions": { "typeIdentifier": "t_function_objectcreation_pure$_t_uint256_$returns$_t_bytes_memory_ptr_$", "typeString": "function (uint256) pure returns (bytes memory)" }, "typeName": { "id": 2041, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1661:5:11", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } } }, "id": 2048, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1657:25:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "1635:47:11" }, { "expression": { "id": 2054, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 2050, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2040, "src": "1692:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2052, "indexExpression": { "hexValue": "30", "id": 2051, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1699:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1692:9:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "hexValue": "30", "id": 2053, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1704:3:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_044852b2a670ade5407e78fb2863c51de9fcb96542a07186fe3aeda6bb8a116d", "typeString": "literal_string \"0\"" }, "value": "0" }, "src": "1692:15:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "id": 2055, "nodeType": "ExpressionStatement", "src": "1692:15:11" }, { "expression": { "id": 2060, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 2056, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2040, "src": "1717:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2058, "indexExpression": { "hexValue": "31", "id": 2057, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1724:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1717:9:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "hexValue": "78", "id": 2059, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1729:3:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_7521d1cadbcfa91eec65aa16715b94ffc1c9654ba57ea2ef1a2127bca1127a83", "typeString": "literal_string \"x\"" }, "value": "x" }, "src": "1717:15:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "id": 2061, "nodeType": "ExpressionStatement", "src": "1717:15:11" }, { "body": { "id": 2090, "nodeType": "Block", "src": "1787:87:11", "statements": [ { "expression": { "id": 2084, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 2076, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2040, "src": "1801:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2078, "indexExpression": { "id": 2077, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2063, "src": "1808:1:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "1801:9:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "baseExpression": { "id": 2079, "name": "_HEX_SYMBOLS", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1909, "src": "1813:12:11", "typeDescriptions": { "typeIdentifier": "t_bytes16", "typeString": "bytes16" } }, "id": 2083, "indexExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2082, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2080, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2032, "src": "1826:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "hexValue": "307866", "id": 2081, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1834:3:11", "typeDescriptions": { "typeIdentifier": "t_rational_15_by_1", "typeString": "int_const 15" }, "value": "0xf" }, "src": "1826:11:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "IndexAccess", "src": "1813:25:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "src": "1801:37:11", "typeDescriptions": { "typeIdentifier": "t_bytes1", "typeString": "bytes1" } }, "id": 2085, "nodeType": "ExpressionStatement", "src": "1801:37:11" }, { "expression": { "id": 2088, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 2086, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2032, "src": "1852:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": ">>=", "rightHandSide": { "hexValue": "34", "id": 2087, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1862:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_4_by_1", "typeString": "int_const 4" }, "value": "4" }, "src": "1852:11:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2089, "nodeType": "ExpressionStatement", "src": "1852:11:11" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2072, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2070, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2063, "src": "1775:1:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "hexValue": "31", "id": 2071, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1779:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "1775:5:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 2091, "initializationExpression": { "assignments": [ 2063 ], "declarations": [ { "constant": false, "id": 2063, "mutability": "mutable", "name": "i", "nodeType": "VariableDeclaration", "scope": 2091, "src": "1747:9:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2062, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1747:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 2069, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2068, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2066, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "32", "id": 2064, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1759:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "id": 2065, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2034, "src": "1763:6:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1759:10:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "hexValue": "31", "id": 2067, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1772:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "1759:14:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "1747:26:11" }, "loopExpression": { "expression": { "id": 2074, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "--", "prefix": true, "src": "1782:3:11", "subExpression": { "id": 2073, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2063, "src": "1784:1:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 2075, "nodeType": "ExpressionStatement", "src": "1782:3:11" }, "nodeType": "ForStatement", "src": "1742:132:11" }, { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 2095, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 2093, "name": "value", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2032, "src": "1891:5:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "30", "id": 2094, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1900:1:11", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1891:10:11", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, { "hexValue": "537472696e67733a20686578206c656e67746820696e73756666696369656e74", "id": 2096, "isConstant": false, "isLValue": false, "isPure": true, "kind": "string", "lValueRequested": false, "nodeType": "Literal", "src": "1903:34:11", "typeDescriptions": { "typeIdentifier": "t_stringliteral_04fc88320d7c9f639317c75102c103ff0044d3075a5c627e24e76e5bbb2733c2", "typeString": "literal_string \"Strings: hex length insufficient\"" }, "value": "Strings: hex length insufficient" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" }, { "typeIdentifier": "t_stringliteral_04fc88320d7c9f639317c75102c103ff0044d3075a5c627e24e76e5bbb2733c2", "typeString": "literal_string \"Strings: hex length insufficient\"" } ], "id": 2092, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ 4294967278, 4294967278 ], "referencedDeclaration": 4294967278, "src": "1883:7:11", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$_t_string_memory_ptr_$returns$__$", "typeString": "function (bool,string memory) pure" } }, "id": 2097, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1883:55:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 2098, "nodeType": "ExpressionStatement", "src": "1883:55:11" }, { "expression": { "arguments": [ { "id": 2101, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2040, "src": "1962:6:11", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 2100, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1955:6:11", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 2099, "name": "string", "nodeType": "ElementaryTypeName", "src": "1955:6:11", "typeDescriptions": {} } }, "id": 2102, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1955:14:11", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "functionReturnParameters": 2038, "id": 2103, "nodeType": "Return", "src": "1948:21:11" } ] }, "documentation": { "id": 2030, "nodeType": "StructuredDocumentation", "src": "1418:112:11", "text": " @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length." }, "id": 2105, "implemented": true, "kind": "function", "modifiers": [], "name": "toHexString", "nodeType": "FunctionDefinition", "parameters": { "id": 2035, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2032, "mutability": "mutable", "name": "value", "nodeType": "VariableDeclaration", "scope": 2105, "src": "1556:13:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2031, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1556:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 2034, "mutability": "mutable", "name": "length", "nodeType": "VariableDeclaration", "scope": 2105, "src": "1571:14:11", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2033, "name": "uint256", "nodeType": "ElementaryTypeName", "src": "1571:7:11", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1555:31:11" }, "returnParameters": { "id": 2038, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2037, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 2105, "src": "1610:13:11", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 2036, "name": "string", "nodeType": "ElementaryTypeName", "src": "1610:6:11", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "1609:15:11" }, "scope": 2106, "src": "1535:441:11", "stateMutability": "pure", "virtual": false, "visibility": "internal" } ], "scope": 2107, "src": "93:1885:11" } ], "src": "33:1946:11" }, "compiler": { "name": "solc", "version": "0.8.0+commit.c7dfd78e.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.4.3", "updatedAt": "2021-11-27T07:41:30.941Z", "devdoc": { "details": "String operations.", "kind": "dev", "methods": {}, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }