{ "contractName": "Buffer", "abi": [], "bytecode": "0x604c602c600b82828239805160001a60731460008114601c57601e565bfe5b5030600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820baad10f677e0a610b6935487d2f8577c8be4a010621fafa15cf054fc19e7ba0e0029", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820baad10f677e0a610b6935487d2f8577c8be4a010621fafa15cf054fc19e7ba0e0029", "sourceMap": "403:9770:18:-;;132:2:-1;166:7;155:9;146:7;137:37;252:7;246:14;243:1;238:23;232:4;229:33;270:1;265:20;;;;222:63;;265:20;274:9;222:63;;298:9;295:1;288:20;328:4;319:7;311:22;352:7;343;336:24", "deployedSourceMap": "403:9770:18:-;;;;;;;;", "source": "pragma solidity >0.4.18;\n\n/**\n* @dev A library for working with mutable byte buffers in Solidity.\n*\n* Byte buffers are mutable and expandable, and provide a variety of primitives\n* for writing to them. At any time you can fetch a bytes object containing the\n* current contents of the buffer. The bytes object should not be stored between\n* operations, as it may change due to resizing of the buffer.\n*/\nlibrary Buffer {\n /**\n * @dev Represents a mutable buffer. Buffers have a current value (buf) and\n * a capacity. The capacity may be longer than the current value, in\n * which case it can be extended without the need to allocate more memory.\n */\n struct buffer {\n bytes buf;\n uint capacity;\n }\n\n /**\n * @dev Initializes a buffer with an initial capacity.\n * @param buf The buffer to initialize.\n * @param capacity The number of bytes of space to allocate the buffer.\n * @return The buffer, for chaining.\n */\n function init(buffer memory buf, uint capacity) internal pure returns(buffer memory) {\n if (capacity % 32 != 0) {\n capacity += 32 - (capacity % 32);\n }\n // Allocate space for the buffer data\n buf.capacity = capacity;\n assembly {\n let ptr := mload(0x40)\n mstore(buf, ptr)\n mstore(ptr, 0)\n mstore(0x40, add(ptr, capacity))\n }\n return buf;\n }\n\n /**\n * @dev Initializes a new buffer from an existing bytes object.\n * Changes to the buffer may mutate the original value.\n * @param b The bytes object to initialize the buffer with.\n * @return A new buffer.\n */\n function fromBytes(bytes memory b) internal pure returns(buffer memory) {\n buffer memory buf;\n buf.buf = b;\n buf.capacity = b.length;\n return buf;\n }\n\n function resize(buffer memory buf, uint capacity) private pure {\n bytes memory oldbuf = buf.buf;\n init(buf, capacity);\n append(buf, oldbuf);\n }\n\n function max(uint a, uint b) private pure returns(uint) {\n if (a > b) {\n return a;\n }\n return b;\n }\n\n /**\n * @dev Sets buffer length to 0.\n * @param buf The buffer to truncate.\n * @return The original buffer, for chaining..\n */\n function truncate(buffer memory buf) internal pure returns (buffer memory) {\n assembly {\n let bufptr := mload(buf)\n mstore(bufptr, 0)\n }\n return buf;\n }\n\n /**\n * @dev Writes a byte string to a buffer. Resizes if doing so would exceed\n * the capacity of the buffer.\n * @param buf The buffer to append to.\n * @param off The start offset to write to.\n * @param data The data to append.\n * @param len The number of bytes to copy.\n * @return The original buffer, for chaining.\n */\n function write(buffer memory buf, uint off, bytes memory data, uint len) internal pure returns(buffer memory) {\n require(len <= data.length);\n\n if (off + len + buf.buf.length > buf.capacity) {\n resize(buf, max(buf.capacity, len + off) * 2);\n }\n\n uint dest;\n uint src;\n assembly {\n // Memory address of the buffer data\n let bufptr := mload(buf)\n // Length of existing buffer data\n let buflen := mload(bufptr)\n // Start address = buffer address + offset + sizeof(buffer length)\n dest := add(add(bufptr, 32), off)\n // Update buffer length if we're extending it\n if gt(add(len, off), buflen) {\n mstore(bufptr, add(len, off))\n }\n src := add(data, 32)\n }\n\n // Copy word-length chunks while possible\n for (; len >= 32; len -= 32) {\n assembly {\n mstore(dest, mload(src))\n }\n dest += 32;\n src += 32;\n }\n\n // Copy remaining bytes\n uint mask = 256 ** (32 - len) - 1;\n assembly {\n let srcpart := and(mload(src), not(mask))\n let destpart := and(mload(dest), mask)\n mstore(dest, or(destpart, srcpart))\n }\n\n return buf;\n }\n\n /**\n * @dev Appends a byte string to a buffer. Resizes if doing so would exceed\n * the capacity of the buffer.\n * @param buf The buffer to append to.\n * @param data The data to append.\n * @param len The number of bytes to copy.\n * @return The original buffer, for chaining.\n */\n function append(buffer memory buf, bytes memory data, uint len) internal pure returns (buffer memory) {\n return write(buf, buf.buf.length, data, len);\n }\n\n /**\n * @dev Appends a byte string to a buffer. Resizes if doing so would exceed\n * the capacity of the buffer.\n * @param buf The buffer to append to.\n * @param data The data to append.\n * @return The original buffer, for chaining.\n */\n function append(buffer memory buf, bytes memory data) internal pure returns (buffer memory) {\n return write(buf, buf.buf.length, data, data.length);\n }\n\n /**\n * @dev Writes a byte to the buffer. Resizes if doing so would exceed the\n * capacity of the buffer.\n * @param buf The buffer to append to.\n * @param off The offset to write the byte at.\n * @param data The data to append.\n * @return The original buffer, for chaining.\n */\n function writeUint8(buffer memory buf, uint off, uint8 data) internal pure returns(buffer memory) {\n if (off > buf.capacity) {\n resize(buf, buf.capacity * 2);\n }\n\n assembly {\n // Memory address of the buffer data\n let bufptr := mload(buf)\n // Length of existing buffer data\n let buflen := mload(bufptr)\n // Address = buffer address + sizeof(buffer length) + off\n let dest := add(add(bufptr, off), 32)\n mstore8(dest, data)\n // Update buffer length if we extended it\n if eq(off, buflen) {\n mstore(bufptr, add(buflen, 1))\n }\n }\n return buf;\n }\n\n /**\n * @dev Appends a byte to the buffer. Resizes if doing so would exceed the\n * capacity of the buffer.\n * @param buf The buffer to append to.\n * @param data The data to append.\n * @return The original buffer, for chaining.\n */\n function appendUint8(buffer memory buf, uint8 data) internal pure returns(buffer memory) {\n return writeUint8(buf, buf.buf.length, data);\n }\n\n /**\n * @dev Writes up to 32 bytes to the buffer. Resizes if doing so would\n * exceed the capacity of the buffer.\n * @param buf The buffer to append to.\n * @param off The offset to write at.\n * @param data The data to append.\n * @param len The number of bytes to write (left-aligned).\n * @return The original buffer, for chaining.\n */\n function write(buffer memory buf, uint off, bytes32 data, uint len) private pure returns(buffer memory) {\n if (len + off > buf.capacity) {\n resize(buf, max(buf.capacity, len) * 2);\n }\n\n uint mask = 256 ** len - 1;\n // Right-align data\n data = data >> (8 * (32 - len));\n assembly {\n // Memory address of the buffer data\n let bufptr := mload(buf)\n // Address = buffer address + sizeof(buffer length) + off + len\n let dest := add(add(bufptr, off), len)\n mstore(dest, or(and(mload(dest), not(mask)), data))\n // Update buffer length if we extended it\n if gt(add(off, len), mload(bufptr)) {\n mstore(bufptr, add(off, len))\n }\n }\n return buf;\n }\n\n /**\n * @dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n * capacity of the buffer.\n * @param buf The buffer to append to.\n * @param off The offset to write at.\n * @param data The data to append.\n * @return The original buffer, for chaining.\n */\n function writeBytes20(buffer memory buf, uint off, bytes20 data) internal pure returns (buffer memory) {\n return write(buf, off, bytes32(data), 20);\n }\n\n /**\n * @dev Appends a bytes20 to the buffer. Resizes if doing so would exceed\n * the capacity of the buffer.\n * @param buf The buffer to append to.\n * @param data The data to append.\n * @return The original buffer, for chhaining.\n */\n function appendBytes20(buffer memory buf, bytes20 data) internal pure returns (buffer memory) {\n return write(buf, buf.buf.length, bytes32(data), 20);\n }\n\n /**\n * @dev Appends a bytes32 to the buffer. Resizes if doing so would exceed\n * the capacity of the buffer.\n * @param buf The buffer to append to.\n * @param data The data to append.\n * @return The original buffer, for chaining.\n */\n function appendBytes32(buffer memory buf, bytes32 data) internal pure returns (buffer memory) {\n return write(buf, buf.buf.length, data, 32);\n }\n\n /**\n * @dev Writes an integer to the buffer. Resizes if doing so would exceed\n * the capacity of the buffer.\n * @param buf The buffer to append to.\n * @param off The offset to write at.\n * @param data The data to append.\n * @param len The number of bytes to write (right-aligned).\n * @return The original buffer, for chaining.\n */\n function writeInt(buffer memory buf, uint off, uint data, uint len) private pure returns(buffer memory) {\n if (len + off > buf.capacity) {\n resize(buf, max(buf.capacity, len + off) * 2);\n }\n\n uint mask = 256 ** len - 1;\n assembly {\n // Memory address of the buffer data\n let bufptr := mload(buf)\n // Address = buffer address + off + sizeof(buffer length) + len\n let dest := add(add(bufptr, off), len)\n mstore(dest, or(and(mload(dest), not(mask)), data))\n // Update buffer length if we extended it\n if gt(add(off, len), mload(bufptr)) {\n mstore(bufptr, add(off, len))\n }\n }\n return buf;\n }\n}\n", "sourcePath": "@ensdomains/buffer/contracts/Buffer.sol", "ast": { "absolutePath": "@ensdomains/buffer/contracts/Buffer.sol", "exportedSymbols": { "Buffer": [ 4208 ] }, "id": 4209, "nodeType": "SourceUnit", "nodes": [ { "id": 3752, "literals": [ "solidity", ">", "0.4", ".18" ], "nodeType": "PragmaDirective", "src": "0:24:18" }, { "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": "@dev A library for working with mutable byte buffers in Solidity.\n* Byte buffers are mutable and expandable, and provide a variety of primitives\nfor writing to them. At any time you can fetch a bytes object containing the\ncurrent contents of the buffer. The bytes object should not be stored between\noperations, as it may change due to resizing of the buffer.", "fullyImplemented": true, "id": 4208, "linearizedBaseContracts": [ 4208 ], "name": "Buffer", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "Buffer.buffer", "id": 3757, "members": [ { "constant": false, "id": 3754, "name": "buf", "nodeType": "VariableDeclaration", "scope": 3757, "src": "702:9:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" }, "typeName": { "id": 3753, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "702:5:18", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3756, "name": "capacity", "nodeType": "VariableDeclaration", "scope": 3757, "src": "721:13:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3755, "name": "uint", "nodeType": "ElementaryTypeName", "src": "721:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "name": "buffer", "nodeType": "StructDefinition", "scope": 4208, "src": "678:63:18", "visibility": "public" }, { "body": { "id": 3791, "nodeType": "Block", "src": "1063:361:18", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3770, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3768, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 3766, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3761, "src": "1077:8:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "3332", "id": 3767, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1088:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "1077:13:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 3769, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1094:1:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1077:18:18", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 3781, "nodeType": "IfStatement", "src": "1073:81:18", "trueBody": { "id": 3780, "nodeType": "Block", "src": "1097:57:18", "statements": [ { "expression": { "argumentTypes": null, "id": 3778, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 3771, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3761, "src": "1111:8:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3777, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { 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"hexValue": "3332", "id": 3774, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1140:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "1129:13:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 3776, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1128:15:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1123:20:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1111:32:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3779, "nodeType": "ExpressionStatement", "src": "1111:32:18" } ] } }, { "expression": { "argumentTypes": null, "id": 3786, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3782, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3759, "src": "1209:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 3784, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 3756, "src": "1209:12:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 3785, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3761, "src": "1224:8:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1209:23:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3787, "nodeType": "ExpressionStatement", "src": "1209:23:18" }, { "externalReferences": [ { "buf": { "declaration": 3759, "isOffset": false, "isSlot": false, "src": "1307:3:18", "valueSize": 1 } }, { "capacity": { "declaration": 3761, "isOffset": false, "isSlot": false, "src": "1378:8:18", "valueSize": 1 } } ], "id": 3788, "nodeType": "InlineAssembly", "operations": "{\n let ptr := mload(0x40)\n mstore(buf, ptr)\n mstore(ptr, 0)\n mstore(0x40, add(ptr, capacity))\n}", "src": "1242:171:18" }, { "expression": { "argumentTypes": null, "id": 3789, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3759, "src": "1414:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 3765, "id": 3790, "nodeType": "Return", "src": "1407:10:18" } ] }, "documentation": "@dev Initializes a buffer with an initial capacity.\n@param buf The buffer to initialize.\n@param capacity The number of bytes of space to allocate the buffer.\n@return The buffer, for chaining.", "id": 3792, "implemented": true, "kind": "function", "modifiers": [], "name": "init", "nodeType": "FunctionDefinition", "parameters": { "id": 3762, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3759, "name": "buf", "nodeType": "VariableDeclaration", "scope": 3792, "src": "992:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3758, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "992:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3761, "name": "capacity", "nodeType": "VariableDeclaration", "scope": 3792, "src": "1011:13:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3760, "name": "uint", "nodeType": "ElementaryTypeName", "src": "1011:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "991:34:18" }, "returnParameters": { "id": 3765, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3764, "name": "", "nodeType": "VariableDeclaration", "scope": 3792, "src": "1048:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3763, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "1048:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "1047:15:18" }, "scope": 4208, "src": "978:446:18", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 3817, "nodeType": "Block", "src": "1739:108:18", "statements": [ { "assignments": [ 3800 ], "declarations": [ { "constant": false, "id": 3800, "name": "buf", "nodeType": "VariableDeclaration", "scope": 3817, "src": "1749:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3799, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "1749:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "id": 3801, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1749:17:18" }, { "expression": { "argumentTypes": null, "id": 3806, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3802, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3800, "src": "1776:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 3804, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 3754, "src": "1776:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 3805, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3794, "src": "1786:1:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "1776:11:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 3807, "nodeType": "ExpressionStatement", "src": "1776:11:18" }, { "expression": { "argumentTypes": null, "id": 3813, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3808, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3800, "src": "1797:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 3810, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 3756, "src": "1797:12:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3811, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3794, "src": "1812:1:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 3812, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1812:8:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1797:23:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3814, "nodeType": "ExpressionStatement", "src": "1797:23:18" }, { "expression": { "argumentTypes": null, "id": 3815, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3800, "src": "1837:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 3798, "id": 3816, "nodeType": "Return", "src": "1830:10:18" } ] }, "documentation": "@dev Initializes a new buffer from an existing bytes object.\n Changes to the buffer may mutate the original value.\n@param b The bytes object to initialize the buffer with.\n@return A new buffer.", "id": 3818, "implemented": true, "kind": "function", "modifiers": [], "name": "fromBytes", "nodeType": "FunctionDefinition", "parameters": { "id": 3795, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3794, "name": "b", "nodeType": "VariableDeclaration", "scope": 3818, "src": "1686:14:18", 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false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3844, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2047:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2038:16:18" }, "returnParameters": { "id": 3849, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3848, "name": "", "nodeType": "VariableDeclaration", "scope": 3860, "src": "2076:4:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3847, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2076:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2075:6:18" }, "scope": 4208, "src": "2026:134:18", "stateMutability": "pure", "superFunction": null, "visibility": "private" }, { "body": { "id": 3870, "nodeType": "Block", "src": "2383:123:18", "statements": [ { "externalReferences": [ { "buf": { "declaration": 3862, "isOffset": false, "isSlot": false, "src": "2436:3:18", "valueSize": 1 } } ], "id": 3867, "nodeType": "InlineAssembly", "operations": "{\n let bufptr := mload(buf)\n mstore(bufptr, 0)\n}", "src": "2393:102:18" }, { "expression": { "argumentTypes": null, "id": 3868, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3862, "src": "2496:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 3866, "id": 3869, "nodeType": "Return", "src": "2489:10:18" } ] }, "documentation": "@dev Sets buffer length to 0.\n@param buf The buffer to truncate.\n@return The original buffer, for chaining..", "id": 3871, "implemented": true, "kind": "function", "modifiers": [], 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"typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3903, "name": "max", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3860, "src": "3097:3:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 3909, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3097:28:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "argumentTypes": null, "hexValue": "32", "id": 3910, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", 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"FunctionCall", "src": "3085:45:18", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 3913, "nodeType": "ExpressionStatement", "src": "3085:45:18" } ] } }, { "assignments": [ 3917 ], "declarations": [ { "constant": false, "id": 3917, "name": "dest", "nodeType": "VariableDeclaration", "scope": 3955, "src": "3151:9:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3916, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3151:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 3918, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "3151:9:18" }, { "assignments": [ 3920 ], "declarations": [ { "constant": false, "id": 3920, "name": "src", "nodeType": "VariableDeclaration", "scope": 3955, "src": "3170:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3919, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3170:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 3921, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "3170:8:18" }, { "externalReferences": [ { "buf": { "declaration": 3873, "isOffset": false, "isSlot": false, "src": "3280:3:18", "valueSize": 1 } }, { "data": { "declaration": 3877, "isOffset": false, "isSlot": false, "src": "3680:4:18", "valueSize": 1 } }, { "dest": { "declaration": 3917, "isOffset": false, "isSlot": false, "src": "3462:4:18", "valueSize": 1 } }, { "src": { "declaration": 3920, "isOffset": false, "isSlot": false, "src": "3669:3:18", "valueSize": 1 } }, { "off": { "declaration": 3875, "isOffset": false, "isSlot": false, "src": "3491:3:18", "valueSize": 1 } }, { "len": { "declaration": 3879, "isOffset": false, "isSlot": false, "src": "3576:3:18", "valueSize": 1 } }, { "off": { "declaration": 3875, "isOffset": false, "isSlot": false, "src": "3581:3:18", "valueSize": 1 } }, { "len": { "declaration": 3879, "isOffset": false, "isSlot": false, "src": "3632:3:18", "valueSize": 1 } }, { "off": { "declaration": 3875, "isOffset": false, "isSlot": false, "src": "3637:3:18", "valueSize": 1 } } ], "id": 3922, "nodeType": "InlineAssembly", "operations": "{\n let bufptr := mload(buf)\n let buflen := mload(bufptr)\n dest := add(add(bufptr, 32), off)\n if gt(add(len, off), buflen)\n {\n mstore(bufptr, add(len, off))\n }\n src := add(data, 32)\n}", "src": "3188:574:18" }, { "body": { "id": 3939, "nodeType": "Block", "src": "3788:136:18", "statements": [ { "externalReferences": [ { "dest": { "declaration": 3917, "isOffset": false, "isSlot": false, "src": "3836:4:18", "valueSize": 1 } }, { "src": { "declaration": 3920, "isOffset": false, "isSlot": false, "src": "3848:3:18", "valueSize": 1 } } ], "id": 3930, "nodeType": "InlineAssembly", "operations": "{\n mstore(dest, mload(src))\n}", "src": "3802:82:18" }, { "expression": { "argumentTypes": null, "id": 3933, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 3931, "name": "dest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3917, "src": "3880:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "argumentTypes": null, "hexValue": "3332", "id": 3932, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3888:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3880:10:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3934, "nodeType": "ExpressionStatement", "src": "3880:10:18" }, { "expression": { "argumentTypes": null, "id": 3937, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 3935, "name": "src", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3920, "src": "3904:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "argumentTypes": null, "hexValue": "3332", "id": 3936, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3911:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3904:9:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3938, "nodeType": "ExpressionStatement", "src": "3904:9:18" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3925, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 3923, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3879, "src": "3766:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "hexValue": "3332", "id": 3924, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3773:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3766:9:18", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 3940, "initializationExpression": null, "loopExpression": { "expression": { "argumentTypes": null, "id": 3928, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 3926, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3879, "src": "3777:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "argumentTypes": null, "hexValue": "3332", "id": 3927, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3784:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3777:9:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3929, "nodeType": "ExpressionStatement", "src": "3777:9:18" }, "nodeType": "ForStatement", "src": "3759:165:18" }, { "assignments": [ 3942 ], "declarations": [ { "constant": false, "id": 3942, "name": "mask", "nodeType": "VariableDeclaration", "scope": 3955, "src": "3966:9:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3941, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3966:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 3951, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3950, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3948, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "323536", "id": 3943, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3978:3:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3946, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "3332", "id": 3944, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3986:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "id": 3945, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3879, "src": "3991:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3986:8:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 3947, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3985:10:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3978:17:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 3949, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3998:1:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "3978:21:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3966:33:18" }, { "externalReferences": [ { "src": { "declaration": 3920, "isOffset": false, "isSlot": false, "src": "4057:3:18", "valueSize": 1 } }, { "mask": { "declaration": 3942, "isOffset": false, "isSlot": false, "src": "4067:4:18", "valueSize": 1 } }, { "dest": { "declaration": 3917, "isOffset": false, "isSlot": false, "src": "4112:4:18", "valueSize": 1 } }, { "mask": { "declaration": 3942, "isOffset": false, "isSlot": false, "src": "4119:4:18", "valueSize": 1 } }, { "dest": { "declaration": 3917, "isOffset": false, "isSlot": false, "src": "4144:4:18", "valueSize": 1 } } ], "id": 3952, "nodeType": "InlineAssembly", "operations": "{\n let srcpart := and(mload(src), not(mask))\n let destpart := and(mload(dest), mask)\n mstore(dest, or(destpart, srcpart))\n}", "src": "4009:189:18" }, { "expression": { "argumentTypes": null, "id": 3953, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3873, "src": "4199:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 3883, "id": 3954, "nodeType": "Return", "src": "4192:10:18" } ] }, "documentation": "@dev Writes a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The start offset to write to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 3956, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 3880, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3873, "name": "buf", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2881:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3872, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "2881:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3875, "name": "off", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2900:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3874, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2900:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3877, "name": "data", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2910:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3876, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2910:5:18", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3879, "name": "len", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2929:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3878, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2929:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2880:58:18" }, "returnParameters": { "id": 3883, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3882, "name": "", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2961:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3881, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "2961:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "2960:15:18" }, "scope": 4208, "src": "2866:1343:18", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 3976, "nodeType": "Block", "src": "4625:61:18", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 3968, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3958, "src": "4648:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3969, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3958, "src": "4653:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 3970, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 3754, "src": "4653:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 3971, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4653:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 3972, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3960, "src": "4669:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 3973, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3962, "src": "4675:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3967, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 3956, 4100 ], "referencedDeclaration": 3956, "src": "4642:5:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$3757_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$3757_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 3974, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4642:37:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 3966, "id": 3975, "nodeType": "Return", "src": "4635:44:18" } ] }, "documentation": "@dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 3977, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 3963, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3958, "name": "buf", "nodeType": "VariableDeclaration", "scope": 3977, "src": "4539:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3957, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "4539:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3960, "name": "data", "nodeType": "VariableDeclaration", "scope": 3977, "src": "4558:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3959, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4558:5:18", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3962, "name": "len", "nodeType": "VariableDeclaration", "scope": 3977, "src": "4577:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3961, "name": "uint", "nodeType": "ElementaryTypeName", "src": "4577:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": 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"id": 3987, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3979, "src": "5069:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3988, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3979, "src": "5074:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 3989, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 3754, "src": "5074:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 3990, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": 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Resizes if doing so would exceed the\n capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 4044, "implemented": true, "kind": "function", "modifiers": [], "name": "appendUint8", "nodeType": "FunctionDefinition", "parameters": { "id": 4031, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4028, "name": "buf", "nodeType": "VariableDeclaration", "scope": 4044, "src": "6425:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4027, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "6425:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": 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"typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4065, "name": "max", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3860, "src": "7097:3:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 4069, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7097:22:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "argumentTypes": null, "hexValue": "32", "id": 4070, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7122:1:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "7097:26:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 4063, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3841, "src": "7085:6:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$3757_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 4072, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7085:39:18", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 4073, "nodeType": "ExpressionStatement", "src": "7085:39:18" } ] } }, { "assignments": [ 4077 ], "declarations": [ { "constant": false, "id": 4077, "name": "mask", "nodeType": "VariableDeclaration", "scope": 4099, "src": "7145:9:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4076, "name": "uint", "nodeType": "ElementaryTypeName", "src": "7145:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 4083, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4082, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4080, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "323536", "id": 4078, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7157:3:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "argumentTypes": null, "id": 4079, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4052, "src": "7164:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7157:10:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 4081, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7170:1:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "7157:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "7145:26:18" }, { "expression": { "argumentTypes": null, "id": 4094, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 4084, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4050, "src": "7209:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 4093, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 4085, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4050, "src": "7216:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": ">>", "rightExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4091, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "38", "id": 4086, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7225:1:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_8_by_1", "typeString": "int_const 8" }, "value": "8" }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4089, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "3332", "id": 4087, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7230:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "id": 4088, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4052, "src": "7235:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7230:8:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 4090, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7229:10:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7225:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 4092, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7224:16:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7216:24:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "7209:31:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 4095, "nodeType": "ExpressionStatement", "src": "7209:31:18" }, { "externalReferences": [ { "buf": { "declaration": 4046, "isOffset": false, "isSlot": false, "src": "7342:3:18", "valueSize": 1 } }, { "len": { "declaration": 4052, "isOffset": false, "isSlot": false, "src": "7469:3:18", "valueSize": 1 } }, { "off": { "declaration": 4048, "isOffset": false, "isSlot": false, "src": "7463:3:18", "valueSize": 1 } }, { "data": { "declaration": 4050, "isOffset": false, "isSlot": false, "src": "7531:4:18", "valueSize": 1 } }, { "mask": { "declaration": 4077, "isOffset": false, "isSlot": false, "src": "7523:4:18", "valueSize": 1 } }, { "off": { "declaration": 4048, "isOffset": false, "isSlot": false, "src": "7614:3:18", "valueSize": 1 } }, { "len": { "declaration": 4052, "isOffset": false, "isSlot": false, "src": "7619:3:18", "valueSize": 1 } }, { "off": { "declaration": 4048, "isOffset": false, "isSlot": false, "src": "7677:3:18", "valueSize": 1 } }, { "len": { "declaration": 4052, "isOffset": false, "isSlot": false, "src": "7682:3:18", "valueSize": 1 } } ], "id": 4096, "nodeType": "InlineAssembly", "operations": "{\n let bufptr := mload(buf)\n let dest := add(add(bufptr, off), len)\n mstore(dest, or(and(mload(dest), not(mask)), data))\n if gt(add(off, len), mload(bufptr))\n {\n mstore(bufptr, add(off, len))\n }\n}", "src": "7250:476:18" }, { "expression": { "argumentTypes": null, "id": 4097, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4046, "src": "7727:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 4056, "id": 4098, "nodeType": "Return", "src": "7720:10:18" } ] }, "documentation": "@dev Writes up to 32 bytes to the buffer. Resizes if doing so would\n exceed the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@param len The number of bytes to write (left-aligned).\n@return The original buffer, for chaining.", "id": 4100, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 4053, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4046, "name": "buf", "nodeType": "VariableDeclaration", "scope": 4100, "src": "6942:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4045, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "6942:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4048, "name": "off", "nodeType": "VariableDeclaration", "scope": 4100, "src": "6961:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4047, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6961:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4050, "name": "data", "nodeType": "VariableDeclaration", "scope": 4100, "src": "6971:12:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 4049, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6971:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4052, "name": "len", "nodeType": "VariableDeclaration", "scope": 4100, "src": "6985:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4051, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6985:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "6941:53:18" }, "returnParameters": { "id": 4056, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4055, "name": "", "nodeType": "VariableDeclaration", "scope": 4100, "src": "7016:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4054, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "7016:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "7015:15:18" }, "scope": 4208, "src": "6927:810:18", "stateMutability": "pure", "superFunction": null, "visibility": "private" }, { "body": { "id": 4120, "nodeType": "Block", "src": "8146:58:18", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4112, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4102, "src": "8169:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "id": 4113, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4104, "src": "8174:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4115, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4106, "src": "8187:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 4114, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8179:7:18", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 4116, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8179:13:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 4117, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8194:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 4111, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 3956, 4100 ], "referencedDeclaration": 4100, "src": "8163:5:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$3757_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$3757_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 4118, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8163:34:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 4110, "id": 4119, "nodeType": "Return", "src": "8156:41:18" } ] }, "documentation": "@dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 4121, "implemented": true, "kind": "function", "modifiers": [], "name": "writeBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 4107, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4102, "name": "buf", "nodeType": "VariableDeclaration", "scope": 4121, "src": "8065:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4101, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "8065:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4104, "name": "off", "nodeType": "VariableDeclaration", "scope": 4121, "src": "8084:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4103, "name": "uint", "nodeType": "ElementaryTypeName", "src": "8084:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4106, "name": "data", "nodeType": "VariableDeclaration", "scope": 4121, "src": "8094:12:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 4105, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8094:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "value": null, "visibility": "internal" } ], "src": "8064:43:18" }, "returnParameters": { "id": 4110, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4109, "name": "", "nodeType": "VariableDeclaration", "scope": 4121, "src": "8131:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4108, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "8131:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "8130:15:18" }, "scope": 4208, "src": "8043:161:18", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 4141, "nodeType": "Block", "src": "8565:69:18", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4131, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4123, "src": "8588:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4132, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4123, "src": "8593:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 4133, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 3754, "src": "8593:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 4134, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "8593:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4136, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4125, "src": "8617:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 4135, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8609:7:18", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 4137, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8609:13:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 4138, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8624:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 4130, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 3956, 4100 ], "referencedDeclaration": 4100, "src": "8582:5:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$3757_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$3757_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 4139, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8582:45:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 4129, "id": 4140, "nodeType": "Return", "src": "8575:52:18" } ] }, "documentation": "@dev Appends a bytes20 to the buffer. 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At any time you can fetch a bytes object containing the\ncurrent contents of the buffer. 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"typeString": "uint256" } }, "id": 3938, "nodeType": "ExpressionStatement", "src": "3904:9:18" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3925, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 3923, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3879, "src": "3766:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "argumentTypes": null, "hexValue": "3332", "id": 3924, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3773:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3766:9:18", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 3940, "initializationExpression": null, "loopExpression": { "expression": { "argumentTypes": null, "id": 3928, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 3926, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3879, "src": "3777:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "argumentTypes": null, "hexValue": "3332", "id": 3927, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3784:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3777:9:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 3929, "nodeType": "ExpressionStatement", "src": "3777:9:18" }, "nodeType": "ForStatement", "src": "3759:165:18" }, { "assignments": [ 3942 ], "declarations": [ { "constant": false, "id": 3942, "name": "mask", "nodeType": "VariableDeclaration", "scope": 3955, "src": "3966:9:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3941, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3966:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 3951, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3950, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3948, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "323536", "id": 3943, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3978:3:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 3946, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "3332", "id": 3944, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3986:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "id": 3945, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3879, "src": "3991:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3986:8:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 3947, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3985:10:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3978:17:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 3949, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3998:1:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "3978:21:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3966:33:18" }, { "externalReferences": [ { "src": { "declaration": 3920, "isOffset": false, "isSlot": false, "src": "4057:3:18", "valueSize": 1 } }, { "mask": { "declaration": 3942, "isOffset": false, "isSlot": false, "src": "4067:4:18", "valueSize": 1 } }, { "dest": { "declaration": 3917, "isOffset": false, "isSlot": false, "src": "4112:4:18", "valueSize": 1 } }, { "mask": { "declaration": 3942, "isOffset": false, "isSlot": false, "src": "4119:4:18", "valueSize": 1 } }, { "dest": { "declaration": 3917, "isOffset": false, "isSlot": false, "src": "4144:4:18", "valueSize": 1 } } ], "id": 3952, "nodeType": "InlineAssembly", "operations": "{\n let srcpart := and(mload(src), not(mask))\n let destpart := and(mload(dest), mask)\n mstore(dest, or(destpart, srcpart))\n}", "src": "4009:189:18" }, { "expression": { "argumentTypes": null, "id": 3953, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3873, "src": "4199:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 3883, "id": 3954, "nodeType": "Return", "src": "4192:10:18" } ] }, "documentation": "@dev Writes a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The start offset to write to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 3956, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 3880, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3873, "name": "buf", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2881:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3872, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "2881:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3875, "name": "off", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2900:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3874, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2900:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3877, "name": "data", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2910:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3876, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2910:5:18", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3879, "name": "len", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2929:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3878, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2929:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2880:58:18" }, "returnParameters": { "id": 3883, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3882, "name": "", "nodeType": "VariableDeclaration", "scope": 3956, "src": "2961:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3881, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "2961:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "2960:15:18" }, "scope": 4208, "src": "2866:1343:18", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 3976, "nodeType": "Block", "src": "4625:61:18", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 3968, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3958, "src": "4648:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3969, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3958, "src": "4653:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 3970, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 3754, "src": "4653:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 3971, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4653:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 3972, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3960, "src": "4669:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 3973, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3962, "src": "4675:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3967, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 3956, 4100 ], "referencedDeclaration": 3956, "src": "4642:5:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$3757_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$3757_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 3974, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4642:37:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 3966, "id": 3975, "nodeType": "Return", "src": "4635:44:18" } ] }, "documentation": "@dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 3977, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 3963, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3958, "name": "buf", "nodeType": "VariableDeclaration", "scope": 3977, "src": "4539:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3957, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "4539:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3960, "name": "data", "nodeType": "VariableDeclaration", "scope": 3977, "src": "4558:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 3959, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4558:5:18", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 3962, "name": "len", "nodeType": "VariableDeclaration", "scope": 3977, "src": "4577:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 3961, "name": "uint", "nodeType": "ElementaryTypeName", "src": "4577:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "4538:48:18" }, "returnParameters": { "id": 3966, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3965, "name": "", "nodeType": "VariableDeclaration", "scope": 3977, "src": "4610:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3964, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "4610:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "4609:15:18" }, "scope": 4208, "src": "4523:163:18", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 3996, "nodeType": "Block", "src": "5046:69:18", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 3987, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3979, "src": "5069:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3988, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3979, "src": "5074:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 3989, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 3754, "src": "5074:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 3990, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5074:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 3991, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3981, "src": "5090:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 3992, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 3981, "src": "5096:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 3993, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5096:11:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 3986, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 3956, 4100 ], "referencedDeclaration": 3956, "src": "5063:5:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$3757_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$3757_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 3994, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5063:45:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 3985, "id": 3995, "nodeType": "Return", "src": "5056:52:18" } ] }, "documentation": "@dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 3997, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 3982, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 3979, "name": "buf", "nodeType": "VariableDeclaration", "scope": 3997, "src": "4970:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 3978, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "4970:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, 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null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 4089, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "3332", "id": 4087, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7230:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "id": 4088, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4052, "src": "7235:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7230:8:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 4090, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7229:10:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7225:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 4092, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7224:16:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7216:24:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "7209:31:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 4095, "nodeType": "ExpressionStatement", "src": "7209:31:18" }, { "externalReferences": [ { "buf": { "declaration": 4046, "isOffset": false, "isSlot": false, "src": "7342:3:18", "valueSize": 1 } }, { "len": { "declaration": 4052, "isOffset": false, "isSlot": false, "src": "7469:3:18", "valueSize": 1 } }, { "off": { "declaration": 4048, "isOffset": false, "isSlot": false, "src": "7463:3:18", "valueSize": 1 } }, { "data": { "declaration": 4050, "isOffset": false, "isSlot": false, "src": "7531:4:18", "valueSize": 1 } }, { "mask": { "declaration": 4077, "isOffset": false, "isSlot": false, "src": "7523:4:18", "valueSize": 1 } }, { "off": { "declaration": 4048, "isOffset": false, "isSlot": false, "src": "7614:3:18", "valueSize": 1 } }, { "len": { "declaration": 4052, "isOffset": false, "isSlot": false, "src": "7619:3:18", "valueSize": 1 } }, { "off": { "declaration": 4048, "isOffset": false, "isSlot": false, "src": "7677:3:18", "valueSize": 1 } }, { "len": { "declaration": 4052, "isOffset": false, "isSlot": false, "src": "7682:3:18", "valueSize": 1 } } ], "id": 4096, "nodeType": "InlineAssembly", "operations": "{\n let bufptr := mload(buf)\n let dest := add(add(bufptr, off), len)\n mstore(dest, or(and(mload(dest), not(mask)), data))\n if gt(add(off, len), mload(bufptr))\n {\n mstore(bufptr, add(off, len))\n }\n}", "src": "7250:476:18" }, { "expression": { "argumentTypes": null, "id": 4097, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4046, "src": "7727:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 4056, "id": 4098, "nodeType": "Return", "src": "7720:10:18" } ] }, "documentation": "@dev Writes up to 32 bytes to the buffer. Resizes if doing so would\n exceed the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@param len The number of bytes to write (left-aligned).\n@return The original buffer, for chaining.", "id": 4100, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 4053, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4046, "name": "buf", "nodeType": "VariableDeclaration", "scope": 4100, "src": "6942:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4045, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "6942:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4048, "name": "off", "nodeType": "VariableDeclaration", "scope": 4100, "src": "6961:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4047, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6961:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4050, "name": "data", "nodeType": "VariableDeclaration", "scope": 4100, "src": "6971:12:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 4049, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6971:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4052, "name": "len", "nodeType": "VariableDeclaration", "scope": 4100, "src": "6985:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4051, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6985:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "6941:53:18" }, "returnParameters": { "id": 4056, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4055, "name": "", "nodeType": "VariableDeclaration", "scope": 4100, "src": "7016:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4054, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "7016:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "7015:15:18" }, "scope": 4208, "src": "6927:810:18", "stateMutability": "pure", "superFunction": null, "visibility": "private" }, { "body": { "id": 4120, "nodeType": "Block", "src": "8146:58:18", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4112, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4102, "src": "8169:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "id": 4113, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4104, "src": "8174:3:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4115, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4106, "src": "8187:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 4114, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8179:7:18", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 4116, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8179:13:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 4117, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8194:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 4111, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 3956, 4100 ], "referencedDeclaration": 4100, "src": "8163:5:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$3757_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$3757_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 4118, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8163:34:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 4110, "id": 4119, "nodeType": "Return", "src": "8156:41:18" } ] }, "documentation": "@dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 4121, "implemented": true, "kind": "function", "modifiers": [], "name": "writeBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 4107, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4102, "name": "buf", "nodeType": "VariableDeclaration", "scope": 4121, "src": "8065:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4101, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "8065:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4104, "name": "off", "nodeType": "VariableDeclaration", "scope": 4121, "src": "8084:8:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 4103, "name": "uint", "nodeType": "ElementaryTypeName", "src": "8084:4:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4106, "name": "data", "nodeType": "VariableDeclaration", "scope": 4121, "src": "8094:12:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 4105, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8094:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "value": null, "visibility": "internal" } ], "src": "8064:43:18" }, "returnParameters": { "id": 4110, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4109, "name": "", "nodeType": "VariableDeclaration", "scope": 4121, "src": "8131:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4108, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "8131:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "8130:15:18" }, "scope": 4208, "src": "8043:161:18", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 4141, "nodeType": "Block", "src": "8565:69:18", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4131, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4123, "src": "8588:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4132, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4123, "src": "8593:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 4133, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 3754, "src": "8593:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 4134, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "8593:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4136, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4125, "src": "8617:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 4135, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8609:7:18", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 4137, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8609:13:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 4138, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8624:2:18", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 4130, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 3956, 4100 ], "referencedDeclaration": 4100, "src": "8582:5:18", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$3757_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$3757_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 4139, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8582:45:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 4129, "id": 4140, "nodeType": "Return", "src": "8575:52:18" } ] }, "documentation": "@dev Appends a bytes20 to the buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@return The original buffer, for chhaining.", "id": 4142, "implemented": true, "kind": "function", "modifiers": [], "name": "appendBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 4126, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4123, "name": "buf", "nodeType": "VariableDeclaration", "scope": 4142, "src": "8494:17:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4122, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "8494:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 4125, "name": "data", "nodeType": "VariableDeclaration", "scope": 4142, "src": "8513:12:18", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 4124, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8513:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "value": null, "visibility": "internal" } ], "src": "8493:33:18" }, "returnParameters": { "id": 4129, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 4128, "name": "", "nodeType": "VariableDeclaration", "scope": 4142, "src": "8550:13:18", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 4127, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 3757, "src": "8550:6:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "8549:15:18" }, "scope": 4208, "src": "8471:163:18", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 4160, "nodeType": "Block", "src": "8994:60:18", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 4152, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4144, "src": "9017:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 4153, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4144, "src": "9022:3:18", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$3757_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 4154, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 3754, "src": "9022:7:18", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 4155, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "9022:14:18", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 4156, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 4146, "src": "9038:4:18", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3332", "id": 4157, "isConstant": false, 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