{ "contractName": "WitnetCBOR", "abi": [ { "inputs": [], "name": "EmptyArray", "type": "error" }, { "inputs": [ { "internalType": "uint256", "name": "length", "type": "uint256" } ], "name": "InvalidLengthEncoding", "type": "error" }, { "inputs": [ { "internalType": "uint256", "name": "read", "type": "uint256" }, { "internalType": "uint256", "name": "expected", "type": "uint256" } ], "name": "UnexpectedMajorType", "type": "error" }, { "inputs": [ { "internalType": "uint256", "name": "unexpected", "type": "uint256" } ], "name": "UnsupportedMajorType", "type": "error" }, { "inputs": [ { "internalType": "uint256", "name": "primitive", "type": "uint256" } ], "name": "UnsupportedPrimitive", "type": "error" } ], "metadata": "{\"compiler\":{\"version\":\"0.8.25+commit.b61c2a91\"},\"language\":\"Solidity\",\"output\":{\"abi\":[{\"inputs\":[],\"name\":\"EmptyArray\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"length\",\"type\":\"uint256\"}],\"name\":\"InvalidLengthEncoding\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"read\",\"type\":\"uint256\"},{\"internalType\":\"uint256\",\"name\":\"expected\",\"type\":\"uint256\"}],\"name\":\"UnexpectedMajorType\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"unexpected\",\"type\":\"uint256\"}],\"name\":\"UnsupportedMajorType\",\"type\":\"error\"},{\"inputs\":[{\"internalType\":\"uint256\",\"name\":\"primitive\",\"type\":\"uint256\"}],\"name\":\"UnsupportedPrimitive\",\"type\":\"error\"}],\"devdoc\":{\"author\":\"The Witnet Foundation.\",\"details\":\"Most of the logic has been borrowed from Patrick Gansterer\\u2019s cbor.js library: https://github.com/paroga/cbor-js\",\"kind\":\"dev\",\"methods\":{},\"title\":\"A minimalistic implementation of \\u201cRFC 7049 Concise Binary Object Representation\\u201d\",\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"notice\":\"This library leverages a buffer-like structure for step-by-step decoding of bytes so as to minimize the gas cost of decoding them into a useful native type.\",\"version\":1}},\"settings\":{\"compilationTarget\":{\"project:/contracts/libs/WitnetCBOR.sol\":\"WitnetCBOR\"},\"evmVersion\":\"paris\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":true,\"runs\":200},\"remappings\":[]},\"sources\":{\"project:/contracts/libs/WitnetBuffer.sol\":{\"keccak256\":\"0xa14570492eb5a313ddbacae0185c850ec99c67211eb33989a5e21d31bf06a150\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://e83c11edb49cab6a767c0b685825bc22ece0d3d2897e0d54fe1923df5cc76ba5\",\"dweb:/ipfs/QmdLDgCc3tnKbgRrXwfNzsg6uUDirNmjvBB8V3iMmnD69a\"]},\"project:/contracts/libs/WitnetCBOR.sol\":{\"keccak256\":\"0xb346547ff731163beea2c657c52675cdf7936691d566a76a045577cf9c34ade0\",\"license\":\"MIT\",\"urls\":[\"bzz-raw://6d4b5b6424a033584b41f1204d635db98fda9ca9bd2a614c9d82539a3e4e6529\",\"dweb:/ipfs/QmW6Qy3wWpzHSECYaCPaf9LWGfPqWDKVoP2kPSNNQu7LMQ\"]}},\"version\":1}", "bytecode": "0x60566037600b82828239805160001a607314602a57634e487b7160e01b600052600060045260246000fd5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220a5bfe42e8bf3fec6aa4642967f703d5bc2a70cb662ef6d7ee4a5d8d2d41927dd64736f6c63430008190033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220a5bfe42e8bf3fec6aa4642967f703d5bc2a70cb662ef6d7ee4a5d8d2d41927dd64736f6c63430008190033", "immutableReferences": {}, "generatedSources": [], "deployedGeneratedSources": [], "sourceMap": "536:19008:66:-:0;;;;;;;;;;;;;;;-1:-1:-1;;;536:19008:66;;;;;;;;;;;;;;;;;", "deployedSourceMap": "536:19008:66:-:0;;;;;;;;", "source": "// SPDX-License-Identifier: MIT\r\n\r\npragma solidity >=0.8.0 <0.9.0;\r\n\r\nimport \"./WitnetBuffer.sol\";\r\n\r\n/// @title A minimalistic implementation of “RFC 7049 Concise Binary Object Representation”\r\n/// @notice This library leverages a buffer-like structure for step-by-step decoding of bytes so as to minimize\r\n/// the gas cost of decoding them into a useful native type.\r\n/// @dev Most of the logic has been borrowed from Patrick Gansterer’s cbor.js library: https://github.com/paroga/cbor-js\r\n/// @author The Witnet Foundation.\r\n\r\nlibrary WitnetCBOR {\r\n\r\n using WitnetBuffer for WitnetBuffer.Buffer;\r\n using WitnetCBOR for WitnetCBOR.CBOR;\r\n\r\n /// Data struct following the RFC-7049 standard: Concise Binary Object Representation.\r\n struct CBOR {\r\n WitnetBuffer.Buffer buffer;\r\n uint8 initialByte;\r\n uint8 majorType;\r\n uint8 additionalInformation;\r\n uint64 len;\r\n uint64 tag;\r\n }\r\n\r\n uint8 internal constant MAJOR_TYPE_INT = 0;\r\n uint8 internal constant MAJOR_TYPE_NEGATIVE_INT = 1;\r\n uint8 internal constant MAJOR_TYPE_BYTES = 2;\r\n uint8 internal constant MAJOR_TYPE_STRING = 3;\r\n uint8 internal constant MAJOR_TYPE_ARRAY = 4;\r\n uint8 internal constant MAJOR_TYPE_MAP = 5;\r\n uint8 internal constant MAJOR_TYPE_TAG = 6;\r\n uint8 internal constant MAJOR_TYPE_CONTENT_FREE = 7;\r\n\r\n uint32 internal constant UINT32_MAX = type(uint32).max;\r\n uint64 internal constant UINT64_MAX = type(uint64).max;\r\n \r\n error EmptyArray();\r\n error InvalidLengthEncoding(uint length);\r\n error UnexpectedMajorType(uint read, uint expected);\r\n error UnsupportedPrimitive(uint primitive);\r\n error UnsupportedMajorType(uint unexpected); \r\n\r\n modifier isMajorType(\r\n WitnetCBOR.CBOR memory cbor,\r\n uint8 expected\r\n ) {\r\n if (cbor.majorType != expected) {\r\n revert UnexpectedMajorType(cbor.majorType, expected);\r\n }\r\n _;\r\n }\r\n\r\n modifier notEmpty(WitnetBuffer.Buffer memory buffer) {\r\n if (buffer.data.length == 0) {\r\n revert WitnetBuffer.EmptyBuffer();\r\n }\r\n _;\r\n }\r\n\r\n function eof(CBOR memory cbor)\r\n internal pure\r\n returns (bool)\r\n {\r\n return cbor.buffer.cursor >= cbor.buffer.data.length;\r\n }\r\n\r\n /// @notice Decode a CBOR structure from raw bytes.\r\n /// @dev This is the main factory for CBOR instances, which can be later decoded into native EVM types.\r\n /// @param bytecode Raw bytes representing a CBOR-encoded value.\r\n /// @return A `CBOR` instance containing a partially decoded value.\r\n function fromBytes(bytes memory bytecode)\r\n internal pure\r\n returns (CBOR memory)\r\n {\r\n WitnetBuffer.Buffer memory buffer = WitnetBuffer.Buffer(bytecode, 0);\r\n return fromBuffer(buffer);\r\n }\r\n\r\n /// @notice Decode a CBOR structure from raw bytes.\r\n /// @dev This is an alternate factory for CBOR instances, which can be later decoded into native EVM types.\r\n /// @param buffer A Buffer structure representing a CBOR-encoded value.\r\n /// @return A `CBOR` instance containing a partially decoded value.\r\n function fromBuffer(WitnetBuffer.Buffer memory buffer)\r\n internal pure\r\n notEmpty(buffer)\r\n returns (CBOR memory)\r\n {\r\n uint8 initialByte;\r\n uint8 majorType = 255;\r\n uint8 additionalInformation;\r\n uint64 tag = UINT64_MAX;\r\n uint256 len;\r\n bool isTagged = true;\r\n while (isTagged) {\r\n // Extract basic CBOR properties from input bytes\r\n initialByte = buffer.readUint8();\r\n len ++;\r\n majorType = initialByte >> 5;\r\n additionalInformation = initialByte & 0x1f;\r\n // Early CBOR tag parsing.\r\n if (majorType == MAJOR_TYPE_TAG) {\r\n uint _cursor = buffer.cursor;\r\n tag = readLength(buffer, additionalInformation);\r\n len += buffer.cursor - _cursor;\r\n } else {\r\n isTagged = false;\r\n }\r\n }\r\n if (majorType > MAJOR_TYPE_CONTENT_FREE) {\r\n revert UnsupportedMajorType(majorType);\r\n }\r\n return CBOR(\r\n buffer,\r\n initialByte,\r\n majorType,\r\n additionalInformation,\r\n uint64(len),\r\n tag\r\n );\r\n }\r\n\r\n function fork(WitnetCBOR.CBOR memory self)\r\n internal pure\r\n returns (WitnetCBOR.CBOR memory)\r\n {\r\n return CBOR({\r\n buffer: self.buffer.fork(),\r\n initialByte: self.initialByte,\r\n majorType: self.majorType,\r\n additionalInformation: self.additionalInformation,\r\n len: self.len,\r\n tag: self.tag\r\n });\r\n }\r\n\r\n function settle(CBOR memory self)\r\n internal pure\r\n returns (WitnetCBOR.CBOR memory)\r\n {\r\n if (!self.eof()) {\r\n return fromBuffer(self.buffer);\r\n } else {\r\n return self;\r\n }\r\n }\r\n\r\n function skip(CBOR memory self)\r\n internal pure\r\n returns (WitnetCBOR.CBOR memory)\r\n {\r\n if (\r\n self.majorType == MAJOR_TYPE_INT\r\n || self.majorType == MAJOR_TYPE_NEGATIVE_INT\r\n || (\r\n self.majorType == MAJOR_TYPE_CONTENT_FREE \r\n && self.additionalInformation >= 25\r\n && self.additionalInformation <= 27\r\n )\r\n ) {\r\n self.buffer.cursor += self.peekLength();\r\n } else if (\r\n self.majorType == MAJOR_TYPE_STRING\r\n || self.majorType == MAJOR_TYPE_BYTES\r\n ) {\r\n uint64 len = readLength(self.buffer, self.additionalInformation);\r\n self.buffer.cursor += len;\r\n } else if (\r\n self.majorType == MAJOR_TYPE_ARRAY\r\n || self.majorType == MAJOR_TYPE_MAP\r\n ) { \r\n self.len = readLength(self.buffer, self.additionalInformation); \r\n } else if (\r\n self.majorType != MAJOR_TYPE_CONTENT_FREE\r\n || (\r\n self.additionalInformation != 20\r\n && self.additionalInformation != 21\r\n )\r\n ) {\r\n revert(\"WitnetCBOR.skip: unsupported major type\");\r\n }\r\n return self;\r\n }\r\n\r\n function peekLength(CBOR memory self)\r\n internal pure\r\n returns (uint64)\r\n {\r\n if (self.additionalInformation < 24) {\r\n return 0;\r\n } else if (self.additionalInformation < 28) {\r\n return uint64(1 << (self.additionalInformation - 24));\r\n } else {\r\n revert InvalidLengthEncoding(self.additionalInformation);\r\n }\r\n }\r\n\r\n function readArray(CBOR memory self)\r\n internal pure\r\n isMajorType(self, MAJOR_TYPE_ARRAY)\r\n returns (CBOR[] memory items)\r\n {\r\n // read array's length and move self cursor forward to the first array element:\r\n uint64 len = readLength(self.buffer, self.additionalInformation);\r\n items = new CBOR[](len + 1);\r\n for (uint ix = 0; ix < len; ix ++) {\r\n // settle next element in the array:\r\n self = self.settle();\r\n // fork it and added to the list of items to be returned:\r\n items[ix] = self.fork();\r\n if (self.majorType == MAJOR_TYPE_ARRAY) {\r\n CBOR[] memory _subitems = self.readArray();\r\n // move forward to the first element after inner array:\r\n self = _subitems[_subitems.length - 1];\r\n } else if (self.majorType == MAJOR_TYPE_MAP) {\r\n CBOR[] memory _subitems = self.readMap();\r\n // move forward to the first element after inner map:\r\n self = _subitems[_subitems.length - 1];\r\n } else {\r\n // move forward to the next element:\r\n self.skip();\r\n }\r\n }\r\n // return self cursor as extra item at the end of the list,\r\n // as to optimize recursion when jumping over nested arrays:\r\n items[len] = self;\r\n }\r\n\r\n function readMap(CBOR memory self)\r\n internal pure\r\n isMajorType(self, MAJOR_TYPE_MAP)\r\n returns (CBOR[] memory items)\r\n {\r\n // read number of items within the map and move self cursor forward to the first inner element:\r\n uint64 len = readLength(self.buffer, self.additionalInformation) * 2;\r\n items = new CBOR[](len + 1);\r\n for (uint ix = 0; ix < len; ix ++) {\r\n // settle next element in the array:\r\n self = self.settle();\r\n // fork it and added to the list of items to be returned:\r\n items[ix] = self.fork();\r\n if (ix % 2 == 0 && self.majorType != MAJOR_TYPE_STRING) {\r\n revert UnexpectedMajorType(self.majorType, MAJOR_TYPE_STRING);\r\n } else if (self.majorType == MAJOR_TYPE_ARRAY || self.majorType == MAJOR_TYPE_MAP) {\r\n CBOR[] memory _subitems = (self.majorType == MAJOR_TYPE_ARRAY\r\n ? self.readArray()\r\n : self.readMap()\r\n );\r\n // move forward to the first element after inner array or map:\r\n self = _subitems[_subitems.length - 1];\r\n } else {\r\n // move forward to the next element:\r\n self.skip();\r\n }\r\n }\r\n // return self cursor as extra item at the end of the list,\r\n // as to optimize recursion when jumping over nested arrays:\r\n items[len] = self;\r\n }\r\n\r\n /// Reads the length of the settle CBOR item from a buffer, consuming a different number of bytes depending on the\r\n /// value of the `additionalInformation` argument.\r\n function readLength(\r\n WitnetBuffer.Buffer memory buffer,\r\n uint8 additionalInformation\r\n ) \r\n internal pure\r\n returns (uint64)\r\n {\r\n if (additionalInformation < 24) {\r\n return additionalInformation;\r\n }\r\n if (additionalInformation == 24) {\r\n return buffer.readUint8();\r\n }\r\n if (additionalInformation == 25) {\r\n return buffer.readUint16();\r\n }\r\n if (additionalInformation == 26) {\r\n return buffer.readUint32();\r\n }\r\n if (additionalInformation == 27) {\r\n return buffer.readUint64();\r\n }\r\n if (additionalInformation == 31) {\r\n return UINT64_MAX;\r\n }\r\n revert InvalidLengthEncoding(additionalInformation);\r\n }\r\n\r\n /// @notice Read a `CBOR` structure into a native `bool` value.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return The value represented by the input, as a `bool` value.\r\n function readBool(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_CONTENT_FREE)\r\n returns (bool)\r\n {\r\n if (cbor.additionalInformation == 20) {\r\n return false;\r\n } else if (cbor.additionalInformation == 21) {\r\n return true;\r\n } else {\r\n revert UnsupportedPrimitive(cbor.additionalInformation);\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a native `bytes` value.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return output The value represented by the input, as a `bytes` value. \r\n function readBytes(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_BYTES)\r\n returns (bytes memory output)\r\n {\r\n cbor.len = readLength(\r\n cbor.buffer,\r\n cbor.additionalInformation\r\n );\r\n if (cbor.len == UINT32_MAX) {\r\n // These checks look repetitive but the equivalent loop would be more expensive.\r\n uint32 length = uint32(_readIndefiniteStringLength(\r\n cbor.buffer,\r\n cbor.majorType\r\n ));\r\n if (length < UINT32_MAX) {\r\n output = abi.encodePacked(cbor.buffer.read(length));\r\n length = uint32(_readIndefiniteStringLength(\r\n cbor.buffer,\r\n cbor.majorType\r\n ));\r\n if (length < UINT32_MAX) {\r\n output = abi.encodePacked(\r\n output,\r\n cbor.buffer.read(length)\r\n );\r\n }\r\n }\r\n } else {\r\n return cbor.buffer.read(uint32(cbor.len));\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a `fixed16` value.\r\n /// @dev Due to the lack of support for floating or fixed point arithmetic in the EVM, this method offsets all values\r\n /// by 5 decimal orders so as to get a fixed precision of 5 decimal positions, which should be OK for most `fixed16`\r\n /// use cases. In other words, the output of this method is 10,000 times the actual value, encoded into an `int32`.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return The value represented by the input, as an `int128` value.\r\n function readFloat16(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_CONTENT_FREE)\r\n returns (int32)\r\n {\r\n if (cbor.additionalInformation == 25) {\r\n return cbor.buffer.readFloat16();\r\n } else {\r\n revert UnsupportedPrimitive(cbor.additionalInformation);\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a `fixed32` value.\r\n /// @dev Due to the lack of support for floating or fixed point arithmetic in the EVM, this method offsets all values\r\n /// by 9 decimal orders so as to get a fixed precision of 9 decimal positions, which should be OK for most `fixed64`\r\n /// use cases. In other words, the output of this method is 10^9 times the actual value, encoded into an `int`.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return The value represented by the input, as an `int` value.\r\n function readFloat32(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_CONTENT_FREE)\r\n returns (int)\r\n {\r\n if (cbor.additionalInformation == 26) {\r\n return cbor.buffer.readFloat32();\r\n } else {\r\n revert UnsupportedPrimitive(cbor.additionalInformation);\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a `fixed64` value.\r\n /// @dev Due to the lack of support for floating or fixed point arithmetic in the EVM, this method offsets all values\r\n /// by 15 decimal orders so as to get a fixed precision of 15 decimal positions, which should be OK for most `fixed64`\r\n /// use cases. In other words, the output of this method is 10^15 times the actual value, encoded into an `int`.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return The value represented by the input, as an `int` value.\r\n function readFloat64(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_CONTENT_FREE)\r\n returns (int)\r\n {\r\n if (cbor.additionalInformation == 27) {\r\n return cbor.buffer.readFloat64();\r\n } else {\r\n revert UnsupportedPrimitive(cbor.additionalInformation);\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a native `int128[]` value whose inner values follow the same convention \r\n /// @notice as explained in `decodeFixed16`.\r\n /// @param cbor An instance of `CBOR`.\r\n function readFloat16Array(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_ARRAY)\r\n returns (int32[] memory values)\r\n {\r\n uint64 length = readLength(cbor.buffer, cbor.additionalInformation);\r\n if (length < UINT64_MAX) {\r\n values = new int32[](length);\r\n for (uint64 i = 0; i < length; ) {\r\n CBOR memory item = fromBuffer(cbor.buffer);\r\n values[i] = readFloat16(item);\r\n unchecked {\r\n i ++;\r\n }\r\n }\r\n } else {\r\n revert InvalidLengthEncoding(length);\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a native `int128` value.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return The value represented by the input, as an `int128` value.\r\n function readInt(CBOR memory cbor)\r\n internal pure\r\n returns (int)\r\n {\r\n if (cbor.majorType == 1) {\r\n uint64 _value = readLength(\r\n cbor.buffer,\r\n cbor.additionalInformation\r\n );\r\n return int(-1) - int(uint(_value));\r\n } else if (cbor.majorType == 0) {\r\n // Any `uint64` can be safely casted to `int128`, so this method supports majorType 1 as well so as to have offer\r\n // a uniform API for positive and negative numbers\r\n return int(readUint(cbor));\r\n }\r\n else {\r\n revert UnexpectedMajorType(cbor.majorType, 1);\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a native `int[]` value.\r\n /// @param cbor instance of `CBOR`.\r\n /// @return array The value represented by the input, as an `int[]` value.\r\n function readIntArray(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_ARRAY)\r\n returns (int[] memory array)\r\n {\r\n uint64 length = readLength(cbor.buffer, cbor.additionalInformation);\r\n if (length < UINT64_MAX) {\r\n array = new int[](length);\r\n for (uint i = 0; i < length; ) {\r\n CBOR memory item = fromBuffer(cbor.buffer);\r\n array[i] = readInt(item);\r\n unchecked {\r\n i ++;\r\n }\r\n }\r\n } else {\r\n revert InvalidLengthEncoding(length);\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a native `string` value.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return text The value represented by the input, as a `string` value.\r\n function readString(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_STRING)\r\n returns (string memory text)\r\n {\r\n cbor.len = readLength(cbor.buffer, cbor.additionalInformation);\r\n if (cbor.len == UINT64_MAX) {\r\n bool _done;\r\n while (!_done) {\r\n uint64 length = _readIndefiniteStringLength(\r\n cbor.buffer,\r\n cbor.majorType\r\n );\r\n if (length < UINT64_MAX) {\r\n text = string(abi.encodePacked(\r\n text,\r\n cbor.buffer.readText(length / 4)\r\n ));\r\n } else {\r\n _done = true;\r\n }\r\n }\r\n } else {\r\n return string(cbor.buffer.readText(cbor.len));\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a native `string[]` value.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return strings The value represented by the input, as an `string[]` value.\r\n function readStringArray(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_ARRAY)\r\n returns (string[] memory strings)\r\n {\r\n uint length = readLength(cbor.buffer, cbor.additionalInformation);\r\n if (length < UINT64_MAX) {\r\n strings = new string[](length);\r\n for (uint i = 0; i < length; ) {\r\n CBOR memory item = fromBuffer(cbor.buffer);\r\n strings[i] = readString(item);\r\n unchecked {\r\n i ++;\r\n }\r\n }\r\n } else {\r\n revert InvalidLengthEncoding(length);\r\n }\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a native `uint64` value.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return The value represented by the input, as an `uint64` value.\r\n function readUint(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_INT)\r\n returns (uint)\r\n {\r\n return readLength(\r\n cbor.buffer,\r\n cbor.additionalInformation\r\n );\r\n }\r\n\r\n /// @notice Decode a `CBOR` structure into a native `uint64[]` value.\r\n /// @param cbor An instance of `CBOR`.\r\n /// @return values The value represented by the input, as an `uint64[]` value.\r\n function readUintArray(CBOR memory cbor)\r\n internal pure\r\n isMajorType(cbor, MAJOR_TYPE_ARRAY)\r\n returns (uint[] memory values)\r\n {\r\n uint64 length = readLength(cbor.buffer, cbor.additionalInformation);\r\n if (length < UINT64_MAX) {\r\n values = new uint[](length);\r\n for (uint ix = 0; ix < length; ) {\r\n CBOR memory item = fromBuffer(cbor.buffer);\r\n values[ix] = readUint(item);\r\n unchecked {\r\n ix ++;\r\n }\r\n }\r\n } else {\r\n revert InvalidLengthEncoding(length);\r\n }\r\n } \r\n\r\n /// Read the length of a CBOR indifinite-length item (arrays, maps, byte strings and text) from a buffer, consuming\r\n /// as many bytes as specified by the first byte.\r\n function _readIndefiniteStringLength(\r\n WitnetBuffer.Buffer memory buffer,\r\n uint8 majorType\r\n )\r\n private pure\r\n returns (uint64 len)\r\n {\r\n uint8 initialByte = buffer.readUint8();\r\n if (initialByte == 0xff) {\r\n return UINT64_MAX;\r\n }\r\n len = readLength(\r\n buffer,\r\n initialByte & 0x1f\r\n );\r\n if (len >= UINT64_MAX) {\r\n revert InvalidLengthEncoding(len);\r\n } else if (majorType != (initialByte >> 5)) {\r\n revert UnexpectedMajorType((initialByte >> 5), majorType);\r\n }\r\n }\r\n \r\n}", "sourcePath": "C:\\Users\\guill\\github\\witnet\\witnet-solidity-bridge\\contracts\\libs\\WitnetCBOR.sol", "ast": { "absolutePath": "project:/contracts/libs/WitnetCBOR.sol", "exportedSymbols": { "WitnetBuffer": [ 19191 ], "WitnetCBOR": [ 20734 ] }, "id": 20735, "license": "MIT", "nodeType": "SourceUnit", "nodes": [ { "id": 19193, "literals": [ "solidity", ">=", "0.8", ".0", "<", "0.9", ".0" ], "nodeType": "PragmaDirective", "src": "35:31:66" }, { "absolutePath": "project:/contracts/libs/WitnetBuffer.sol", "file": "./WitnetBuffer.sol", "id": 19194, "nameLocation": "-1:-1:-1", "nodeType": "ImportDirective", "scope": 20735, "sourceUnit": 19192, "src": "70:28:66", "symbolAliases": [], "unitAlias": "" }, { "abstract": false, "baseContracts": [], "canonicalName": "WitnetCBOR", "contractDependencies": [], "contractKind": "library", "documentation": { "id": 19195, "nodeType": "StructuredDocumentation", "src": "102:432:66", "text": "@title A minimalistic implementation of “RFC 7049 Concise Binary Object Representation”\n @notice This library leverages a buffer-like structure for step-by-step decoding of bytes so as to minimize\n the gas cost of decoding them into a useful native type.\n @dev Most of the logic has been borrowed from Patrick Gansterer’s cbor.js library: https://github.com/paroga/cbor-js\n @author The Witnet Foundation." }, "fullyImplemented": true, "id": 20734, "linearizedBaseContracts": [ 20734 ], "name": "WitnetCBOR", "nameLocation": "544:10:66", "nodeType": "ContractDefinition", "nodes": [ { "global": false, "id": 19199, "libraryName": { "id": 19196, "name": "WitnetBuffer", "nameLocations": [ "568:12:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19191, "src": "568:12:66" }, "nodeType": "UsingForDirective", "src": "562:43:66", "typeName": { "id": 19198, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 19197, "name": "WitnetBuffer.Buffer", "nameLocations": [ "585:12:66", "598:6:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 17580, "src": "585:19:66" }, "referencedDeclaration": 17580, "src": "585:19:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_storage_ptr", "typeString": "struct WitnetBuffer.Buffer" } } }, { "global": false, "id": 19203, "libraryName": { "id": 19200, "name": "WitnetCBOR", "nameLocations": [ "615:10:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 20734, "src": "615:10:66" }, "nodeType": "UsingForDirective", "src": "609:37:66", "typeName": { "id": 19202, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 19201, "name": "WitnetCBOR.CBOR", "nameLocations": [ "630:10:66", "641:4:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19218, "src": "630:15:66" }, "referencedDeclaration": 19218, "src": "630:15:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_storage_ptr", "typeString": "struct WitnetCBOR.CBOR" } } }, { "canonicalName": "WitnetCBOR.CBOR", "documentation": { "id": 19204, "nodeType": "StructuredDocumentation", "src": "652:86:66", "text": "Data struct following the RFC-7049 standard: Concise Binary Object Representation." }, "id": 19218, "members": [ { "constant": false, "id": 19207, "mutability": "mutable", "name": "buffer", "nameLocation": "783:6:66", "nodeType": "VariableDeclaration", "scope": 19218, "src": "763:26:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_storage_ptr", "typeString": "struct WitnetBuffer.Buffer" }, "typeName": { "id": 19206, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 19205, "name": "WitnetBuffer.Buffer", "nameLocations": [ "763:12:66", "776:6:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 17580, "src": "763:19:66" }, "referencedDeclaration": 17580, "src": "763:19:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_storage_ptr", "typeString": "struct WitnetBuffer.Buffer" } }, "visibility": "internal" }, { "constant": false, "id": 19209, "mutability": "mutable", "name": "initialByte", "nameLocation": "804:11:66", "nodeType": "VariableDeclaration", "scope": 19218, "src": "798:17:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19208, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "798:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 19211, "mutability": "mutable", "name": "majorType", "nameLocation": "830:9:66", "nodeType": "VariableDeclaration", "scope": 19218, "src": "824:15:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19210, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "824:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 19213, "mutability": "mutable", "name": "additionalInformation", "nameLocation": "854:21:66", "nodeType": "VariableDeclaration", "scope": 19218, "src": "848:27:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19212, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "848:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" }, { "constant": false, "id": 19215, "mutability": "mutable", "name": "len", "nameLocation": "891:3:66", "nodeType": "VariableDeclaration", "scope": 19218, "src": "884:10:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" }, "typeName": { "id": 19214, "name": "uint64", "nodeType": "ElementaryTypeName", "src": "884:6:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "visibility": "internal" }, { "constant": false, "id": 19217, "mutability": "mutable", "name": "tag", "nameLocation": "910:3:66", "nodeType": "VariableDeclaration", "scope": 19218, "src": "903:10:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" }, "typeName": { "id": 19216, "name": "uint64", "nodeType": "ElementaryTypeName", "src": "903:6:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "visibility": "internal" } ], "name": "CBOR", "nameLocation": "749:4:66", "nodeType": "StructDefinition", "scope": 20734, "src": "742:177:66", "visibility": "public" }, { "constant": true, "id": 19221, "mutability": "constant", "name": "MAJOR_TYPE_INT", "nameLocation": "949:14:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "925:42:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19219, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "925:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "hexValue": "30", "id": 19220, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "966:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "visibility": "internal" }, { "constant": true, "id": 19224, "mutability": "constant", "name": "MAJOR_TYPE_NEGATIVE_INT", "nameLocation": "996:23:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "972:51:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19222, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "972:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "hexValue": "31", "id": 19223, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1022:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "visibility": "internal" }, { "constant": true, "id": 19227, "mutability": "constant", "name": "MAJOR_TYPE_BYTES", "nameLocation": "1052:16:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "1028:44:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19225, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1028:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "hexValue": "32", "id": 19226, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1071:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "visibility": "internal" }, { "constant": true, "id": 19230, "mutability": "constant", "name": "MAJOR_TYPE_STRING", "nameLocation": "1101:17:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "1077:45:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19228, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1077:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "hexValue": "33", "id": 19229, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1121:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_3_by_1", "typeString": "int_const 3" }, "value": "3" }, "visibility": "internal" }, { "constant": true, "id": 19233, "mutability": "constant", "name": "MAJOR_TYPE_ARRAY", "nameLocation": "1151:16:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "1127:44:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19231, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1127:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "hexValue": "34", "id": 19232, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1170:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_4_by_1", "typeString": "int_const 4" }, "value": "4" }, "visibility": "internal" }, { "constant": true, "id": 19236, "mutability": "constant", "name": "MAJOR_TYPE_MAP", "nameLocation": "1200:14:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "1176:42:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19234, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1176:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "hexValue": "35", "id": 19235, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1217:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_5_by_1", "typeString": "int_const 5" }, "value": "5" }, "visibility": "internal" }, { "constant": true, "id": 19239, "mutability": "constant", "name": "MAJOR_TYPE_TAG", "nameLocation": "1247:14:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "1223:42:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19237, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1223:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "hexValue": "36", "id": 19238, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1264:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_6_by_1", "typeString": "int_const 6" }, "value": "6" }, "visibility": "internal" }, { "constant": true, "id": 19242, "mutability": "constant", "name": "MAJOR_TYPE_CONTENT_FREE", "nameLocation": "1294:23:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "1270:51:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 19240, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "1270:5:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "value": { "hexValue": "37", "id": 19241, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1320:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_7_by_1", "typeString": "int_const 7" }, "value": "7" }, "visibility": "internal" }, { "constant": true, "id": 19249, "mutability": "constant", "name": "UINT32_MAX", "nameLocation": "1353:10:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "1328:54:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" }, "typeName": { "id": 19243, "name": "uint32", "nodeType": "ElementaryTypeName", "src": "1328:6:66", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "value": { "expression": { "arguments": [ { "id": 19246, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1371:6:66", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint32_$", "typeString": "type(uint32)" }, "typeName": { "id": 19245, "name": "uint32", "nodeType": "ElementaryTypeName", "src": "1371:6:66", "typeDescriptions": {} } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_type$_t_uint32_$", "typeString": "type(uint32)" } ], "id": 19244, "name": "type", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967269, "src": "1366:4:66", "typeDescriptions": { "typeIdentifier": "t_function_metatype_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 19247, "isConstant": false, "isLValue": false, "isPure": true, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "1366:12:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_magic_meta_type_t_uint32", "typeString": "type(uint32)" } }, "id": 19248, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberLocation": "1379:3:66", "memberName": "max", "nodeType": "MemberAccess", "src": "1366:16:66", "typeDescriptions": { "typeIdentifier": "t_uint32", "typeString": "uint32" } }, "visibility": "internal" }, { "constant": true, "id": 19256, "mutability": "constant", "name": "UINT64_MAX", "nameLocation": "1412:10:66", "nodeType": "VariableDeclaration", "scope": 20734, "src": "1387:54:66", "stateVariable": true, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" }, "typeName": { "id": 19250, "name": "uint64", "nodeType": "ElementaryTypeName", "src": "1387:6:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "value": { "expression": { "arguments": [ { "id": 19253, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "1430:6:66", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint64_$", "typeString": "type(uint64)" }, "typeName": { "id": 19252, "name": "uint64", "nodeType": "ElementaryTypeName", "src": "1430:6:66", "typeDescriptions": {} } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_type$_t_uint64_$", "typeString": "type(uint64)" } ], "id": 19251, "name": "type", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967269, "src": "1425:4:66", "typeDescriptions": { "typeIdentifier": "t_function_metatype_pure$__$returns$__$", "typeString": "function () pure" } }, "id": 19254, "isConstant": false, "isLValue": false, "isPure": true, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "1425:12:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_magic_meta_type_t_uint64", "typeString": "type(uint64)" } }, "id": 19255, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberLocation": "1438:3:66", "memberName": "max", "nodeType": "MemberAccess", "src": "1425:16:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "visibility": "internal" }, { "errorSelector": "521299a9", "id": 19258, "name": "EmptyArray", "nameLocation": "1456:10:66", "nodeType": "ErrorDefinition", "parameters": { "id": 19257, "nodeType": "ParameterList", "parameters": [], "src": "1466:2:66" }, "src": "1450:19:66" }, { "errorSelector": "6d785b13", "id": 19262, "name": "InvalidLengthEncoding", "nameLocation": "1479:21:66", "nodeType": "ErrorDefinition", "parameters": { "id": 19261, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 19260, "mutability": "mutable", "name": "length", "nameLocation": "1506:6:66", "nodeType": "VariableDeclaration", "scope": 19262, "src": "1501:11:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 19259, "name": "uint", "nodeType": "ElementaryTypeName", "src": "1501:4:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1500:13:66" }, "src": "1473:41:66" }, { "errorSelector": "001000a0", "id": 19268, "name": "UnexpectedMajorType", "nameLocation": "1524:19:66", "nodeType": "ErrorDefinition", "parameters": { "id": 19267, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 19264, "mutability": "mutable", "name": "read", "nameLocation": "1549:4:66", "nodeType": "VariableDeclaration", "scope": 19268, "src": "1544:9:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 19263, "name": "uint", "nodeType": "ElementaryTypeName", "src": "1544:4:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": 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19468, "src": "2668:10:66", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_Buffer_$17580_memory_ptr_$returns$_t_struct$_CBOR_$19218_memory_ptr_$", "typeString": "function (struct WitnetBuffer.Buffer memory) pure returns (struct WitnetCBOR.CBOR memory)" } }, "id": 19356, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "2668:18:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "functionReturnParameters": 19342, "id": 19357, "nodeType": "Return", "src": "2661:25:66" } ] }, "documentation": { "id": 19335, "nodeType": "StructuredDocumentation", "src": "2187:297:66", "text": "@notice Decode a CBOR structure from raw bytes.\n @dev This is the main factory for CBOR instances, which can be later decoded into native EVM types.\n @param 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"stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "typeName": { "id": 19389, "name": "bool", "nodeType": "ElementaryTypeName", "src": "3277:4:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "visibility": "internal" } ], "id": 19392, "initialValue": { "hexValue": "74727565", "id": 19391, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3293:4:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "nodeType": "VariableDeclarationStatement", "src": "3277:20:66" }, { "body": { "id": 19444, "nodeType": "Block", "src": "3321:475:66", "statements": [ { "expression": { "id": 19398, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 19394, "name": "initialByte", "nodeType": "Identifier", 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(struct WitnetBuffer.Buffer memory) pure returns (uint8)" } }, "id": 19397, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "3401:18:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "src": "3387:32:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "id": 19399, "nodeType": "ExpressionStatement", "src": "3387:32:66" }, { "expression": { "id": 19401, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "++", "prefix": false, "src": "3428:6:66", "subExpression": { "id": 19400, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19387, "src": "3428:3:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 19402, "nodeType": "ExpressionStatement", "src": "3428:6:66" }, { "expression": { "id": 19407, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 19403, "name": "majorType", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19376, "src": "3443:9:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 19406, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 19404, "name": "initialByte", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19373, "src": "3455:11:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": 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"rightHandSide": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 19412, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 19410, "name": "initialByte", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19373, "src": "3504:11:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "&", "rightExpression": { "hexValue": "30783166", "id": 19411, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3518:4:66", "typeDescriptions": { "typeIdentifier": "t_rational_31_by_1", "typeString": "int_const 31" }, "value": "0x1f" }, "src": "3504:18:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "src": "3480:42:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "id": 19414, "nodeType": "ExpressionStatement", "src": "3480:42:66" }, { "condition": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 19417, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 19415, "name": "majorType", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19376, "src": "3569:9:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "id": 19416, "name": "MAJOR_TYPE_TAG", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19239, "src": "3582:14:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "src": "3569:27:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 19442, "nodeType": "Block", "src": "3752:37:66", "statements": [ { "expression": { "id": 19440, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 19438, "name": "isTagged", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19390, "src": "3763:8:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "hexValue": "66616c7365", "id": 19439, "isConstant": false, "isLValue": false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "3774:5:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "false" }, "src": "3763:16:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 19441, "nodeType": "ExpressionStatement", "src": "3763:16:66" } ] }, "id": 19443, "nodeType": "IfStatement", "src": "3565:224:66", "trueBody": { "id": 19437, "nodeType": "Block", "src": "3598:148:66", "statements": [ { "assignments": [ 19419 ], "declarations": [ { "constant": false, "id": 19419, "mutability": "mutable", "name": "_cursor", "nameLocation": "3614:7:66", "nodeType": "VariableDeclaration", "scope": 19437, "src": "3609:12:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 19418, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3609:4:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 19422, "initialValue": { "expression": { "id": 19420, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19363, "src": "3624:6:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } }, "id": 19421, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "3631:6:66", "memberName": "cursor", "nodeType": "MemberAccess", "referencedDeclaration": 17579, "src": "3624:13:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3609:28:66" }, { "expression": { "id": 19428, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 19423, "name": "tag", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19383, "src": "3648:3:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "id": 19425, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19363, "src": "3665:6:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } }, { "id": 19426, "name": "additionalInformation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19380, "src": "3673:21:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" } ], "id": 19424, "name": "readLength", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19997, "src": "3654:10:66", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_Buffer_$17580_memory_ptr_$_t_uint8_$returns$_t_uint64_$", "typeString": "function (struct WitnetBuffer.Buffer memory,uint8) pure returns (uint64)" } }, "id": 19427, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "3654:41:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "src": "3648:47:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "id": 19429, "nodeType": "ExpressionStatement", "src": "3648:47:66" }, { "expression": { "id": 19435, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 19430, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19387, "src": "3706:3:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 19434, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 19431, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19363, "src": "3713:6:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } }, "id": 19432, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "3720:6:66", "memberName": "cursor", "nodeType": "MemberAccess", "referencedDeclaration": 17579, "src": "3713:13:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "id": 19433, "name": "_cursor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19419, "src": "3729:7:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3713:23:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3706:30:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 19436, "nodeType": "ExpressionStatement", "src": "3706:30:66" } ] } } ] }, "condition": { "id": 19393, "name": "isTagged", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19390, "src": "3311:8:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 19445, "nodeType": "WhileStatement", "src": "3304:492:66" }, { "condition": { "commonType": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "id": 19448, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 19446, "name": "majorType", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19376, "src": "3806:9:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "id": 19447, "name": "MAJOR_TYPE_CONTENT_FREE", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19242, "src": "3818:23:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "src": "3806:35:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 19454, "nodeType": "IfStatement", "src": "3802:96:66", "trueBody": { "id": 19453, "nodeType": "Block", "src": "3843:55:66", "statements": [ { "errorCall": { "arguments": [ { "id": 19450, "name": "majorType", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19376, "src": "3880:9:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint8", "typeString": "uint8" } ], "id": 19449, "name": "UnsupportedMajorType", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19276, "src": "3859:20:66", "typeDescriptions": { "typeIdentifier": "t_function_error_pure$_t_uint256_$returns$__$", "typeString": "function (uint256) pure" } }, "id": 19451, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "3859:31:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 19452, "nodeType": "RevertStatement", "src": "3852:38:66" } ] } }, { "expression": { "arguments": [ { "id": 19456, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19363, "src": "3924:6:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } }, { "id": 19457, "name": "initialByte", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19373, "src": "3939:11:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 19458, "name": "majorType", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19376, "src": "3959:9:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "id": 19459, "name": "additionalInformation", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19380, "src": "3977:21:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, { "arguments": [ { "id": 19462, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19387, "src": "4014:3:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 19461, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "4007:6:66", "typeDescriptions": { "typeIdentifier": "t_type$_t_uint64_$", "typeString": "type(uint64)" }, "typeName": { "id": 19460, "name": "uint64", "nodeType": "ElementaryTypeName", "src": "4007:6:66", "typeDescriptions": {} } }, "id": 19463, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "4007:11:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, { "id": 19464, "name": "tag", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19383, "src": "4027:3:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" }, { "typeIdentifier": "t_uint64", "typeString": "uint64" }, { "typeIdentifier": "t_uint64", "typeString": "uint64" } ], "id": 19455, "name": "CBOR", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19218, "src": "3911:4:66", "typeDescriptions": { "typeIdentifier": "t_type$_t_struct$_CBOR_$19218_storage_ptr_$", "typeString": "type(struct WitnetCBOR.CBOR storage pointer)" } }, "id": 19465, "isConstant": false, "isLValue": false, "isPure": false, "kind": "structConstructorCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "3911:126:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "functionReturnParameters": 19371, "id": 19466, "nodeType": "Return", "src": "3904:133:66" } ] }, "documentation": { "id": 19360, "nodeType": "StructuredDocumentation", "src": "2698:308:66", "text": "@notice Decode a CBOR structure from raw bytes.\n @dev This is an alternate factory for CBOR instances, which can be later decoded into native EVM types.\n @param buffer A Buffer structure representing a CBOR-encoded value.\n @return A `CBOR` instance containing a partially decoded value." }, "id": 19468, "implemented": true, "kind": "function", "modifiers": [ { "arguments": [ { "id": 19366, "name": "buffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19363, "src": "3098:6:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } } ], "id": 19367, "kind": "modifierInvocation", "modifierName": { "id": 19365, "name": "notEmpty", "nameLocations": [ "3089:8:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19316, "src": "3089:8:66" }, "nodeType": "ModifierInvocation", "src": "3089:16:66" } ], "name": "fromBuffer", "nameLocation": "3019:10:66", "nodeType": "FunctionDefinition", "parameters": { "id": 19364, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 19363, 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"typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 20111, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "11004:89:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "10995:98:66", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 20113, "nodeType": "ExpressionStatement", "src": "10995:98:66" } ] } } ] } } ] } } ] }, "documentation": { "id": 20034, "nodeType": "StructuredDocumentation", "src": "10076:189:66", "text": "@notice Decode a `CBOR` structure into a native `bytes` value.\n @param cbor An instance of `CBOR`.\n @return output The value represented by the input, as a `bytes` value. " }, "id": 20132, "implemented": true, "kind": "function", "modifiers": [ { "arguments": [ { "id": 20040, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20037, "src": "10342:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, { "id": 20041, "name": "MAJOR_TYPE_BYTES", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19227, "src": "10348:16:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "id": 20042, "kind": "modifierInvocation", "modifierName": { "id": 20039, "name": "isMajorType", "nameLocations": [ "10330:11:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19297, "src": "10330:11:66" }, "nodeType": "ModifierInvocation", "src": "10330:35:66" } ], "name": "readBytes", "nameLocation": "10278:9:66", "nodeType": "FunctionDefinition", "parameters": { "id": 20038, "nodeType": 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"referencedDeclaration": 20136, "src": "11877:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "id": 20146, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "11882:21:66", "memberName": "additionalInformation", "nodeType": "MemberAccess", "referencedDeclaration": 19213, "src": "11877:26:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "nodeType": "BinaryOperation", "operator": "==", "rightExpression": { "hexValue": "3235", "id": 20147, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "11907:2:66", "typeDescriptions": { "typeIdentifier": "t_rational_25_by_1", "typeString": "int_const 25" }, "value": "25" }, "src": "11877:32:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 20160, 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In other words, the output of this method is 10,000 times the actual value, encoded into an `int32`.\n @param cbor An instance of `CBOR`.\n @return The value represented by the input, as an `int128` value." }, "id": 20163, "implemented": true, "kind": "function", "modifiers": [ { "arguments": [ { "id": 20139, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20136, "src": "11811:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, { "id": 20140, "name": "MAJOR_TYPE_CONTENT_FREE", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19242, "src": "11817:23:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "id": 20141, "kind": "modifierInvocation", "modifierName": { "id": 20138, "name": "isMajorType", "nameLocations": [ "11799:11:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19297, 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"UnsupportedPrimitive", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19272, "src": "12826:20:66", "typeDescriptions": { "typeIdentifier": "t_function_error_pure$_t_uint256_$returns$__$", "typeString": "function (uint256) pure" } }, "id": 20189, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "12826:48:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20190, "nodeType": "RevertStatement", "src": "12819:55:66" } ] }, "id": 20192, "nodeType": "IfStatement", "src": "12717:165:66", "trueBody": { "id": 20185, "nodeType": "Block", "src": "12755:49:66", "statements": [ { "expression": { "arguments": [], "expression": { "argumentTypes": [], "expression": { "expression": { "id": 20180, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20167, "src": "12771:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "id": 20181, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "12776:6:66", "memberName": "buffer", "nodeType": "MemberAccess", "referencedDeclaration": 19207, "src": "12771:11:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } }, "id": 20182, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "12783:11:66", "memberName": "readFloat32", "nodeType": "MemberAccess", "referencedDeclaration": 18193, "src": "12771:23:66", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_Buffer_$17580_memory_ptr_$returns$_t_int256_$attached_to$_t_struct$_Buffer_$17580_memory_ptr_$", "typeString": "function (struct WitnetBuffer.Buffer memory) pure returns (int256)" } }, "id": 20183, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "12771:25:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_int256", "typeString": "int256" } }, "functionReturnParameters": 20175, "id": 20184, "nodeType": "Return", "src": "12764:32:66" } ] } } ] }, "documentation": { "id": 20164, "nodeType": "StructuredDocumentation", "src": "12049:529:66", "text": "@notice Decode a `CBOR` structure into a `fixed32` value.\n @dev Due to the lack of support for floating or fixed point arithmetic in the EVM, this method offsets all values\n by 9 decimal orders so as to get a fixed precision of 9 decimal positions, which should be OK for most `fixed64`\n use cases. In other words, the output of this method is 10^9 times the actual value, encoded into an `int`.\n @param cbor An instance of `CBOR`.\n @return The value represented by the input, as an `int` value." }, "id": 20194, "implemented": true, "kind": "function", "modifiers": [ { "arguments": [ { "id": 20170, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20167, "src": "12657:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, { "id": 20171, "name": "MAJOR_TYPE_CONTENT_FREE", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19242, "src": "12663:23:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "id": 20172, "kind": "modifierInvocation", "modifierName": { "id": 20169, "name": "isMajorType", "nameLocations": [ "12645:11:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19297, "src": 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20214, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "13618:25:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_int256", "typeString": "int256" } }, "functionReturnParameters": 20206, "id": 20215, "nodeType": "Return", "src": "13611:32:66" } ] } } ] }, "documentation": { "id": 20195, "nodeType": "StructuredDocumentation", "src": "12893:532:66", "text": "@notice Decode a `CBOR` structure into a `fixed64` value.\n @dev Due to the lack of support for floating or fixed point arithmetic in the EVM, this method offsets all values\n by 15 decimal orders so as to get a fixed precision of 15 decimal positions, which should be OK for most `fixed64`\n use cases. In other words, the output of this method is 10^15 times the actual value, encoded into an `int`.\n @param cbor An instance of `CBOR`.\n @return The value represented by the input, as an `int` value." }, "id": 20225, "implemented": true, "kind": "function", "modifiers": [ { "arguments": [ { "id": 20201, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20198, "src": "13504:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, { "id": 20202, "name": "MAJOR_TYPE_CONTENT_FREE", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19242, "src": "13510:23:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "id": 20203, "kind": "modifierInvocation", "modifierName": { "id": 20200, "name": "isMajorType", "nameLocations": [ "13492:11:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19297, "src": "13492:11:66" }, "nodeType": "ModifierInvocation", "src": "13492:42:66" } ], "name": "readFloat64", "nameLocation": "13438:11:66", "nodeType": "FunctionDefinition", "parameters": { "id": 20199, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20198, "mutability": "mutable", "name": "cbor", "nameLocation": "13462:4:66", "nodeType": "VariableDeclaration", "scope": 20225, "src": "13450:16:66", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR" }, "typeName": { "id": 20197, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 20196, "name": "CBOR", "nameLocations": [ "13450:4:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19218, "src": "13450:4:66" }, "referencedDeclaration": 19218, "src": "13450:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_storage_ptr", "typeString": "struct WitnetCBOR.CBOR" } }, "visibility": 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"typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } }, { "expression": { "id": 20244, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20229, "src": "14140:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "id": 20245, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "14145:21:66", "memberName": "additionalInformation", "nodeType": "MemberAccess", "referencedDeclaration": 19213, "src": "14140:26:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" } ], "id": 20241, "name": "readLength", "nodeType": 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"referencedDeclaration": 20240, "src": "14178:6:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "id": 20249, "name": "UINT64_MAX", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19256, "src": "14187:10:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "src": "14178:19:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 20293, "nodeType": "Block", "src": "14443:53:66", "statements": [ { "errorCall": { "arguments": [ { "id": 20290, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20240, "src": "14481:6:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint64", "typeString": "uint64" } ], "id": 20289, "name": "InvalidLengthEncoding", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19262, "src": "14459:21:66", "typeDescriptions": { "typeIdentifier": "t_function_error_pure$_t_uint256_$returns$__$", "typeString": "function (uint256) pure" } }, "id": 20291, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "14459:29:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20292, "nodeType": "RevertStatement", "src": "14452:36:66" } ] }, "id": 20294, "nodeType": "IfStatement", "src": "14174:322:66", "trueBody": { "id": 20288, "nodeType": "Block", "src": "14199:238:66", "statements": [ { "expression": { "id": 20257, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 20251, "name": "values", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20237, "src": "14208:6:66", "typeDescriptions": { "typeIdentifier": "t_array$_t_int32_$dyn_memory_ptr", "typeString": "int32[] memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "id": 20255, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20240, "src": "14229:6:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint64", "typeString": "uint64" } ], "id": 20254, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "NewExpression", "src": "14217:11:66", "typeDescriptions": { "typeIdentifier": "t_function_objectcreation_pure$_t_uint256_$returns$_t_array$_t_int32_$dyn_memory_ptr_$", "typeString": "function (uint256) pure returns (int32[] memory)" }, "typeName": { "baseType": { "id": 20252, "name": "int32", "nodeType": "ElementaryTypeName", "src": "14221:5:66", "typeDescriptions": { "typeIdentifier": "t_int32", "typeString": "int32" } }, "id": 20253, "nodeType": "ArrayTypeName", "src": "14221:7:66", "typeDescriptions": { "typeIdentifier": "t_array$_t_int32_$dyn_storage_ptr", "typeString": "int32[]" } } }, "id": 20256, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "14217:19:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_array$_t_int32_$dyn_memory_ptr", "typeString": "int32[] memory" } }, "src": "14208:28:66", "typeDescriptions": { "typeIdentifier": "t_array$_t_int32_$dyn_memory_ptr", "typeString": "int32[] memory" } }, "id": 20258, "nodeType": "ExpressionStatement", "src": "14208:28:66" }, { "body": { "id": 20286, "nodeType": "Block", "src": "14278:152:66", "statements": [ { "assignments": [ 20268 ], "declarations": [ { "constant": false, "id": 20268, "mutability": "mutable", "name": "item", "nameLocation": "14301:4:66", "nodeType": "VariableDeclaration", "scope": 20286, "src": "14289:16:66", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR" }, "typeName": { "id": 20267, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 20266, "name": "CBOR", "nameLocations": [ "14289:4:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19218, "src": "14289:4:66" }, "referencedDeclaration": 19218, "src": "14289:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_storage_ptr", "typeString": "struct WitnetCBOR.CBOR" } }, "visibility": "internal" } ], "id": 20273, "initialValue": { "arguments": [ { "expression": { "id": 20270, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20229, "src": "14319:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "id": 20271, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "14324:6:66", "memberName": "buffer", "nodeType": "MemberAccess", "referencedDeclaration": 19207, "src": "14319:11:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } ], "id": 20269, "name": "fromBuffer", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19468, "src": "14308:10:66", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_Buffer_$17580_memory_ptr_$returns$_t_struct$_CBOR_$19218_memory_ptr_$", "typeString": "function (struct WitnetBuffer.Buffer memory) pure returns (struct WitnetCBOR.CBOR memory)" } }, "id": 20272, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "14308:23:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "nodeType": "VariableDeclarationStatement", "src": "14289:42:66" }, { "expression": { "id": 20280, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "baseExpression": { "id": 20274, "name": "values", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20237, "src": "14342:6:66", "typeDescriptions": { "typeIdentifier": "t_array$_t_int32_$dyn_memory_ptr", "typeString": "int32[] memory" } }, "id": 20276, "indexExpression": { "id": 20275, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20260, "src": "14349:1:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "nodeType": "IndexAccess", "src": "14342:9:66", "typeDescriptions": { "typeIdentifier": "t_int32", "typeString": "int32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "id": 20278, "name": "item", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20268, "src": "14366:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } ], "id": 20277, "name": "readFloat16", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20163, "src": "14354:11:66", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_CBOR_$19218_memory_ptr_$returns$_t_int32_$", "typeString": "function (struct WitnetCBOR.CBOR memory) pure returns (int32)" } }, "id": 20279, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "14354:17:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_int32", "typeString": "int32" } }, "src": "14342:29:66", "typeDescriptions": { "typeIdentifier": "t_int32", "typeString": "int32" } }, "id": 20281, "nodeType": "ExpressionStatement", "src": "14342:29:66" }, { "id": 20285, "nodeType": "UncheckedBlock", "src": "14382:39:66", "statements": [ { "expression": { "id": 20283, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "++", "prefix": false, "src": "14405:4:66", "subExpression": { "id": 20282, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20260, "src": "14405:1:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "id": 20284, "nodeType": "ExpressionStatement", "src": "14405:4:66" } ] } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint64", "typeString": "uint64" }, "id": 20265, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 20263, "name": "i", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20260, "src": "14264:1:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "id": 20264, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20240, "src": "14268:6:66", "typeDescriptions": { "typeIdentifier": "t_uint64", 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false, "isPure": true, "kind": "bool", "lValueRequested": false, "nodeType": "Literal", "src": "16807:4:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" }, "value": "true" }, "src": "16799:12:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 20492, "nodeType": "ExpressionStatement", "src": "16799:12:66" } ] }, "id": 20494, "nodeType": "IfStatement", "src": "16620:203:66", "trueBody": { "id": 20488, "nodeType": "Block", "src": "16645:135:66", "statements": [ { "expression": { "id": 20486, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 20471, "name": "text", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20437, "src": "16658:4:66", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "arguments": [ { "id": 20476, "name": "text", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20437, "src": "16703:4:66", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, { "arguments": [ { "commonType": { "typeIdentifier": "t_uint64", "typeString": "uint64" }, "id": 20482, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 20480, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20460, "src": "16743:6:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "nodeType": "BinaryOperation", "operator": "/", "rightExpression": { "hexValue": "34", "id": 20481, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "16752:1:66", "typeDescriptions": { "typeIdentifier": "t_rational_4_by_1", "typeString": "int_const 4" }, "value": "4" }, "src": "16743:10:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint64", "typeString": "uint64" } ], "expression": { "expression": { "id": 20477, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20430, "src": "16722:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "id": 20478, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "16727:6:66", "memberName": "buffer", "nodeType": "MemberAccess", "referencedDeclaration": 19207, "src": "16722:11:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } }, "id": 20479, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "16734:8:66", "memberName": "readText", "nodeType": "MemberAccess", "referencedDeclaration": 18484, "src": "16722:20:66", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_Buffer_$17580_memory_ptr_$_t_uint64_$returns$_t_bytes_memory_ptr_$attached_to$_t_struct$_Buffer_$17580_memory_ptr_$", "typeString": "function (struct WitnetBuffer.Buffer memory,uint64) pure returns (bytes memory)" } }, "id": 20483, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "16722:32:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "expression": { "id": 20474, "name": "abi", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4294967295, "src": "16672:3:66", "typeDescriptions": { "typeIdentifier": "t_magic_abi", "typeString": "abi" } }, "id": 20475, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "memberLocation": "16676:12:66", "memberName": "encodePacked", "nodeType": "MemberAccess", "src": "16672:16:66", "typeDescriptions": { "typeIdentifier": "t_function_abiencodepacked_pure$__$returns$_t_bytes_memory_ptr_$", "typeString": "function () pure returns (bytes memory)" } }, "id": 20484, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "16672:95:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 20473, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "16665:6:66", "typeDescriptions": { "typeIdentifier": "t_type$_t_string_storage_ptr_$", "typeString": "type(string storage pointer)" }, "typeName": { "id": 20472, "name": "string", "nodeType": "ElementaryTypeName", "src": "16665:6:66", "typeDescriptions": {} } }, "id": 20485, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "16665:103:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "src": "16658:110:66", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string memory" } }, "id": 20487, "nodeType": "ExpressionStatement", "src": "16658:110:66" } ] } } ] }, "condition": { "id": 20458, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "UnaryOperation", "operator": "!", "prefix": true, "src": "16485:6:66", "subExpression": { "id": 20457, "name": "_done", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20455, "src": "16486:5:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 20496, "nodeType": "WhileStatement", "src": "16478:354:66" } ] } } ] }, "documentation": { "id": 20427, "nodeType": "StructuredDocumentation", "src": "16020:186:66", "text": "@notice Decode a `CBOR` structure into a native `string` value.\n @param cbor An instance of `CBOR`.\n @return text The value represented by the input, as a `string` value." }, "id": 20511, "implemented": true, "kind": "function", "modifiers": [ { "arguments": [ { "id": 20433, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20430, "src": "16284:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, { "id": 20434, "name": "MAJOR_TYPE_STRING", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19230, "src": "16290:17:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "id": 20435, "kind": "modifierInvocation", "modifierName": { "id": 20432, "name": "isMajorType", "nameLocations": [ "16272:11:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19297, "src": "16272:11:66" }, "nodeType": "ModifierInvocation", "src": "16272:36:66" } ], "name": "readString", "nameLocation": "16219:10:66", "nodeType": "FunctionDefinition", "parameters": { "id": 20431, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20430, "mutability": "mutable", "name": "cbor", "nameLocation": "16242:4:66", "nodeType": "VariableDeclaration", "scope": 20511, "src": "16230:16:66", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR" }, "typeName": { "id": 20429, "nodeType": "UserDefinedTypeName", "pathNode": { "id": 20428, "name": "CBOR", "nameLocations": [ "16230:4:66" ], "nodeType": "IdentifierPath", "referencedDeclaration": 19218, "src": "16230:4:66" }, "referencedDeclaration": 19218, "src": "16230:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_storage_ptr", "typeString": "struct WitnetCBOR.CBOR" } }, "visibility": "internal" } ], "src": "16229:18:66" }, "returnParameters": { "id": 20438, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 20437, "mutability": "mutable", "name": "text", "nameLocation": "16337:4:66", "nodeType": "VariableDeclaration", "scope": 20511, "src": "16323:18:66", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_string_memory_ptr", "typeString": "string" }, "typeName": { "id": 20436, "name": "string", "nodeType": "ElementaryTypeName", "src": "16323:6:66", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "visibility": "internal" } ], "src": "16322:20:66" }, "scope": 20734, "src": "16210:702:66", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 20581, "nodeType": "Block", "src": "17261:406:66", "statements": [ { "assignments": [ 20526 ], "declarations": [ { "constant": false, "id": 20526, "mutability": "mutable", "name": "length", "nameLocation": "17273:6:66", "nodeType": "VariableDeclaration", "scope": 20581, "src": "17268:11:66", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 20525, "name": "uint", "nodeType": "ElementaryTypeName", "src": "17268:4:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 20533, "initialValue": { "arguments": [ { "expression": { "id": 20528, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20515, "src": "17293:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "id": 20529, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "17298:6:66", "memberName": "buffer", "nodeType": "MemberAccess", "referencedDeclaration": 19207, "src": "17293:11:66", "typeDescriptions": { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" } }, { "expression": { "id": 20530, "name": "cbor", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20515, "src": "17306:4:66", "typeDescriptions": { "typeIdentifier": "t_struct$_CBOR_$19218_memory_ptr", "typeString": "struct WitnetCBOR.CBOR memory" } }, "id": 20531, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberLocation": "17311:21:66", "memberName": "additionalInformation", "nodeType": "MemberAccess", "referencedDeclaration": 19213, "src": "17306:26:66", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_Buffer_$17580_memory_ptr", "typeString": "struct WitnetBuffer.Buffer memory" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" } ], "id": 20527, "name": "readLength", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19997, "src": "17282:10:66", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_Buffer_$17580_memory_ptr_$_t_uint8_$returns$_t_uint64_$", "typeString": "function (struct WitnetBuffer.Buffer memory,uint8) pure returns (uint64)" } }, "id": 20532, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "17282:51:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "nodeType": "VariableDeclarationStatement", "src": "17268:65:66" }, { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 20536, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 20534, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20526, "src": "17344:6:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<", "rightExpression": { "id": 20535, "name": "UINT64_MAX", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19256, "src": "17353:10:66", "typeDescriptions": { "typeIdentifier": "t_uint64", "typeString": "uint64" } }, "src": "17344:19:66", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": { "id": 20579, "nodeType": "Block", "src": "17609:53:66", "statements": [ { "errorCall": { "arguments": [ { "id": 20576, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20526, "src": "17647:6:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 20575, "name": "InvalidLengthEncoding", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 19262, "src": "17625:21:66", "typeDescriptions": { "typeIdentifier": "t_function_error_pure$_t_uint256_$returns$__$", "typeString": "function (uint256) pure" } }, "id": 20577, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "nameLocations": [], "names": [], "nodeType": "FunctionCall", "src": "17625:29:66", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 20578, "nodeType": "RevertStatement", "src": "17618:36:66" } ] }, "id": 20580, "nodeType": "IfStatement", "src": "17340:322:66", "trueBody": { "id": 20574, "nodeType": "Block", "src": "17365:238:66", "statements": [ { "expression": { "id": 20543, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 20537, "name": "strings", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20523, "src": "17374:7:66", "typeDescriptions": { "typeIdentifier": "t_array$_t_string_memory_ptr_$dyn_memory_ptr", "typeString": "string memory[] memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "arguments": [ { "id": 20541, "name": "length", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 20526, "src": "17397:6:66", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 20540, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "NewExpression", "src": "17384:12:66", "typeDescriptions": { "typeIdentifier": "t_function_objectcreation_pure$_t_uint256_$returns$_t_array$_t_string_memory_ptr_$dyn_memory_ptr_$", "typeString": "function (uint256) pure returns (string memory[] memory)" }, "typeName": { "baseType": { "id": 20538, "name": "string", "nodeType": "ElementaryTypeName", "src": "17388:6:66", "typeDescriptions": { "typeIdentifier": "t_string_storage_ptr", "typeString": "string" } }, "id": 20539, "nodeType": "ArrayTypeName", "src": "17388:8:66", "typeDescriptions": { "typeIdentifier": "t_array$_t_string_storage_$dyn_storage_ptr", "typeString": "string[]" } } }, "id": 20542, 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