{ "contractName": "Buffer", "abi": [], "bytecode": "0x604c602c600b82828239805160001a60731460008114601c57601e565bfe5b5030600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820baad10f677e0a610b6935487d2f8577c8be4a010621fafa15cf054fc19e7ba0e0029", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820baad10f677e0a610b6935487d2f8577c8be4a010621fafa15cf054fc19e7ba0e0029", "sourceMap": "403:9770:3:-;;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": "403:9770:3:-;;;;;;;;", "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": [ 1106 ] }, "id": 1107, "nodeType": "SourceUnit", "nodes": [ { "id": 650, "literals": [ "solidity", ">", "0.4", ".18" ], "nodeType": "PragmaDirective", "src": "0:24:3" }, { "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. 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"t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1077:18:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 679, "nodeType": "IfStatement", "src": "1073:81:3", "trueBody": { "id": 678, "nodeType": "Block", "src": "1097:57:3", "statements": [ { "expression": { "argumentTypes": null, "id": 676, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 669, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 659, "src": "1111:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 675, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { 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"typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 799, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 739, "src": "3085:6:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$655_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 810, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3085:45:3", "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 811, "nodeType": "ExpressionStatement", "src": "3085:45:3" } ] } }, { "assignments": [ 815 ], "declarations": [ { "constant": false, "id": 815, "name": "dest", "nodeType": "VariableDeclaration", "scope": 853, "src": "3151:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 814, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3151:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 816, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "3151:9:3" }, { "assignments": [ 818 ], "declarations": [ { "constant": false, "id": 818, "name": "src", "nodeType": "VariableDeclaration", "scope": 853, "src": "3170:8:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 817, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3170:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 819, "initialValue": null, 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"referencedDeclaration": 818, "src": "3904:3:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "argumentTypes": null, "hexValue": "3332", "id": 834, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3911:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3904:9:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 836, "nodeType": "ExpressionStatement", "src": "3904:9:3" } ] }, "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 823, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 821, "name": "len", "nodeType": "Identifier", 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"referencedDeclaration": 777, "src": "3777:3:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "argumentTypes": null, "hexValue": "3332", "id": 825, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3784:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3777:9:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 827, "nodeType": "ExpressionStatement", "src": "3777:9:3" }, "nodeType": "ForStatement", "src": "3759:165:3" }, { "assignments": [ 840 ], "declarations": [ { "constant": false, "id": 840, "name": "mask", "nodeType": "VariableDeclaration", "scope": 853, "src": "3966:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 839, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3966:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 849, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 848, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 846, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "323536", "id": 841, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3978:3:3", "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": 844, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "3332", "id": 842, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3986:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "id": 843, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 777, "src": "3991:3:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3986:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 845, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3985:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3978:17:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 847, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3998:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "3978:21:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3966:33:3" }, { "externalReferences": [ { "src": { "declaration": 818, "isOffset": false, "isSlot": false, "src": "4057:3:3", "valueSize": 1 } }, { "mask": { "declaration": 840, "isOffset": false, "isSlot": false, "src": "4067:4:3", "valueSize": 1 } }, { "dest": { "declaration": 815, "isOffset": false, "isSlot": false, "src": "4112:4:3", "valueSize": 1 } }, { "mask": { "declaration": 840, "isOffset": false, "isSlot": false, "src": "4119:4:3", "valueSize": 1 } }, { "dest": { "declaration": 815, "isOffset": false, "isSlot": false, "src": "4144:4:3", "valueSize": 1 } } ], "id": 850, "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": "4009:189:3" }, { "expression": { "argumentTypes": null, "id": 851, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 771, "src": "4199:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 781, "id": 852, "nodeType": "Return", "src": "4192:10:3" } ] }, "documentation": "@dev Writes a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The start offset to write to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 854, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 778, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 771, "name": "buf", "nodeType": "VariableDeclaration", "scope": 854, "src": "2881:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 770, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "2881:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct 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"visibility": "internal" }, { "constant": false, "id": 777, "name": "len", "nodeType": "VariableDeclaration", "scope": 854, "src": "2929:8:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 776, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2929:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2880:58:3" }, "returnParameters": { "id": 781, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 780, "name": "", "nodeType": "VariableDeclaration", "scope": 854, "src": "2961:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 779, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "2961:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "2960:15:3" }, "scope": 1106, "src": "2866:1343:3", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 874, "nodeType": "Block", "src": "4625:61:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 866, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 856, "src": "4648:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 867, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 856, "src": "4653:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 868, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 652, "src": "4653:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 869, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4653:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 870, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 858, "src": "4669:4:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 871, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 860, "src": "4675:3:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 865, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 854, 998 ], "referencedDeclaration": 854, "src": "4642:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$655_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$655_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 872, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4642:37:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 864, "id": 873, "nodeType": "Return", "src": "4635:44:3" } ] }, "documentation": "@dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 875, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 861, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 856, "name": "buf", "nodeType": "VariableDeclaration", "scope": 875, "src": "4539:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 855, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "4539:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": 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"arguments": [ { "argumentTypes": null, "id": 1013, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1004, "src": "8187:4:3", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 1012, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8179:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1014, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8179:13:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 1015, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8194:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 1009, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 854, 998 ], "referencedDeclaration": 998, "src": "8163:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$655_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$655_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 1016, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8163:34:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 1008, "id": 1017, "nodeType": "Return", "src": "8156:41:3" } ] }, "documentation": "@dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 1019, "implemented": true, "kind": "function", "modifiers": [], "name": "writeBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 1005, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1000, "name": "buf", "nodeType": "VariableDeclaration", "scope": 1019, "src": "8065:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 999, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "8065:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": 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"returnParameters": { "id": 1008, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1007, "name": "", "nodeType": "VariableDeclaration", "scope": 1019, "src": "8131:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 1006, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "8131:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "8130:15:3" }, "scope": 1106, "src": "8043:161:3", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1039, "nodeType": "Block", "src": "8565:69:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1029, "name": 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Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@param len The number of bytes to write (right-aligned).\n@return The original buffer, for chaining.", "id": 1105, "implemented": true, "kind": "function", "modifiers": [], "name": "writeInt", "nodeType": "FunctionDefinition", "parameters": { "id": 1068, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1061, "name": "buf", "nodeType": "VariableDeclaration", "scope": 1105, "src": "9442:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 1060, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "9442:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1063, "name": "off", "nodeType": "VariableDeclaration", "scope": 1105, "src": "9461:8:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1062, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9461:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1065, "name": "data", "nodeType": "VariableDeclaration", "scope": 1105, "src": "9471:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1064, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9471:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1067, "name": "len", "nodeType": "VariableDeclaration", "scope": 1105, "src": "9482:8:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1066, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9482:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "9441:50:3" }, "returnParameters": { "id": 1071, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1070, "name": "", "nodeType": "VariableDeclaration", "scope": 1105, "src": "9513:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 1069, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "9513:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "9512:15:3" }, "scope": 1106, "src": "9424:747:3", "stateMutability": "pure", "superFunction": null, "visibility": "private" } ], "scope": 1107, "src": "403:9770:3" } ], "src": "0:10174:3" }, "legacyAST": { "absolutePath": "@ensdomains/buffer/contracts/Buffer.sol", "exportedSymbols": { "Buffer": [ 1106 ] }, "id": 1107, "nodeType": "SourceUnit", "nodes": [ { "id": 650, "literals": [ "solidity", ">", "0.4", ".18" ], "nodeType": "PragmaDirective", "src": "0:24:3" }, { "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": 1106, "linearizedBaseContracts": [ 1106 ], "name": "Buffer", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "Buffer.buffer", "id": 655, "members": [ { "constant": false, "id": 652, "name": "buf", "nodeType": "VariableDeclaration", "scope": 655, "src": "702:9:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" }, "typeName": { "id": 651, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "702:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 654, "name": "capacity", "nodeType": "VariableDeclaration", "scope": 655, "src": "721:13:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 653, "name": "uint", "nodeType": "ElementaryTypeName", "src": "721:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "name": "buffer", "nodeType": "StructDefinition", "scope": 1106, "src": "678:63:3", "visibility": "public" }, { "body": { "id": 689, "nodeType": "Block", "src": "1063:361:3", "statements": [ { "condition": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 668, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 666, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 664, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 659, "src": "1077:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "3332", "id": 665, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1088:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "1077:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "argumentTypes": null, "hexValue": "30", "id": 667, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1094:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1077:18:3", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "falseBody": null, "id": 679, "nodeType": "IfStatement", "src": "1073:81:3", "trueBody": { "id": 678, "nodeType": "Block", "src": "1097:57:3", "statements": [ { "expression": { "argumentTypes": null, "id": 676, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "id": 669, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 659, "src": "1111:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 675, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "3332", "id": 670, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1123:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "components": [ { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 673, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "id": 671, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 659, "src": "1129:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "argumentTypes": null, "hexValue": "3332", "id": 672, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1140:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "1129:13:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 674, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1128:15:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1123:20:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1111:32:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 677, "nodeType": "ExpressionStatement", "src": "1111:32:3" } ] } }, { "expression": { "argumentTypes": null, "id": 684, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 680, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 657, "src": "1209:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 682, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 654, "src": "1209:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 683, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 659, "src": "1224:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1209:23:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 685, "nodeType": "ExpressionStatement", "src": "1209:23:3" }, { "externalReferences": [ { "buf": { "declaration": 657, "isOffset": false, "isSlot": false, "src": "1307:3:3", "valueSize": 1 } }, { "capacity": { "declaration": 659, "isOffset": false, "isSlot": false, "src": "1378:8:3", "valueSize": 1 } } ], "id": 686, "nodeType": "InlineAssembly", "operations": "{\n let ptr := mload(0x40)\n mstore(buf, ptr)\n mstore(ptr, 0)\n mstore(0x40, add(ptr, capacity))\n}", "src": "1242:171:3" }, { "expression": { "argumentTypes": null, "id": 687, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 657, "src": "1414:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 663, "id": 688, "nodeType": "Return", "src": "1407:10:3" } ] }, "documentation": "@dev Initializes a buffer with an initial capacity.\n@param buf The buffer to initialize.\n@param capacity The number of bytes of space to allocate the buffer.\n@return The buffer, for chaining.", "id": 690, "implemented": true, "kind": "function", "modifiers": [], "name": "init", "nodeType": "FunctionDefinition", "parameters": { "id": 660, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 657, "name": "buf", "nodeType": "VariableDeclaration", "scope": 690, "src": "992:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 656, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "992:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 659, "name": "capacity", "nodeType": "VariableDeclaration", "scope": 690, "src": "1011:13:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 658, "name": "uint", "nodeType": "ElementaryTypeName", "src": "1011:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "991:34:3" }, "returnParameters": { "id": 663, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 662, "name": "", "nodeType": "VariableDeclaration", "scope": 690, "src": "1048:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 661, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "1048:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "1047:15:3" }, "scope": 1106, "src": "978:446:3", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 715, "nodeType": "Block", "src": "1739:108:3", "statements": [ { "assignments": [ 698 ], "declarations": [ { "constant": false, "id": 698, "name": "buf", "nodeType": "VariableDeclaration", "scope": 715, "src": "1749:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 697, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "1749:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "id": 699, "initialValue": null, "nodeType": "VariableDeclarationStatement", "src": "1749:17:3" }, { "expression": { "argumentTypes": null, "id": 704, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 700, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 698, "src": "1776:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 702, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 652, "src": "1776:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "id": 703, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 692, "src": "1786:1:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "1776:11:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 705, "nodeType": "ExpressionStatement", "src": "1776:11:3" }, { "expression": { "argumentTypes": null, "id": 711, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 706, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 698, "src": "1797:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 708, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 654, "src": "1797:12:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 709, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 692, "src": "1812:1:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 710, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "1812:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1797:23:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 712, "nodeType": "ExpressionStatement", "src": "1797:23:3" }, { "expression": { "argumentTypes": null, "id": 713, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 698, "src": "1837:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 696, "id": 714, "nodeType": "Return", "src": "1830:10:3" } ] }, "documentation": "@dev Initializes a new buffer from an existing bytes object.\n Changes to the buffer may mutate the original value.\n@param b The bytes object to initialize the buffer with.\n@return A new buffer.", "id": 716, "implemented": true, "kind": "function", "modifiers": [], "name": "fromBytes", "nodeType": "FunctionDefinition", "parameters": { "id": 693, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 692, "name": "b", "nodeType": "VariableDeclaration", "scope": 716, "src": "1686:14:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 691, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1686:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "src": "1685:16:3" }, "returnParameters": { "id": 696, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 695, "name": "", "nodeType": "VariableDeclaration", "scope": 716, "src": "1724:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 694, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "1724:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "1723:15:3" }, "scope": 1106, "src": "1667:180:3", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 738, "nodeType": "Block", "src": "1916:104:3", "statements": [ { "assignments": [ 724 ], "declarations": [ { "constant": false, "id": 724, "name": "oldbuf", "nodeType": "VariableDeclaration", "scope": 738, "src": "1926:19:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 723, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1926:5:3", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" } ], "id": 727, "initialValue": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 725, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 718, "src": "1948:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer 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"t_uint256", "typeString": "uint256" }, "typeName": { "id": 839, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3966:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "id": 849, "initialValue": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 848, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 846, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "323536", "id": 841, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3978:3:3", "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": 844, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "argumentTypes": null, "hexValue": "3332", "id": 842, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3986:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "id": 843, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 777, "src": "3991:3:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3986:8:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 845, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3985:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3978:17:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "argumentTypes": null, "hexValue": "31", "id": 847, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3998:1:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "3978:21:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": 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"typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 781, "id": 852, "nodeType": "Return", "src": "4192:10:3" } ] }, "documentation": "@dev Writes a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The start offset to write to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 854, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 778, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 771, "name": "buf", "nodeType": "VariableDeclaration", "scope": 854, "src": "2881:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 770, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "2881:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct 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"visibility": "internal" }, { "constant": false, "id": 777, "name": "len", "nodeType": "VariableDeclaration", "scope": 854, "src": "2929:8:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 776, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2929:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "2880:58:3" }, "returnParameters": { "id": 781, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 780, "name": "", "nodeType": "VariableDeclaration", "scope": 854, "src": "2961:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 779, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "2961:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "2960:15:3" }, "scope": 1106, "src": "2866:1343:3", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 874, "nodeType": "Block", "src": "4625:61:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 866, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 856, "src": "4648:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 867, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 856, "src": "4653:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 868, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 652, "src": "4653:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 869, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4653:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 870, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 858, "src": "4669:4:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 871, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 860, "src": "4675:3:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 865, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 854, 998 ], "referencedDeclaration": 854, "src": "4642:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$655_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$655_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 872, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4642:37:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 864, "id": 873, "nodeType": "Return", "src": "4635:44:3" } ] }, "documentation": "@dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 875, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 861, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 856, "name": "buf", "nodeType": "VariableDeclaration", "scope": 875, "src": "4539:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 855, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "4539:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": 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"returnParameters": { "id": 864, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 863, "name": "", "nodeType": "VariableDeclaration", "scope": 875, "src": "4610:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 862, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "4610:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "4609:15:3" }, "scope": 1106, "src": "4523:163:3", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 894, "nodeType": "Block", "src": "5046:69:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 885, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 877, "src": "5069:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 886, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 877, "src": "5074:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 887, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 652, "src": "5074:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 888, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5074:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 889, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 879, "src": "5090:4:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 890, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 879, "src": "5096:4:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 891, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5096:11:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 884, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 854, 998 ], "referencedDeclaration": 854, "src": "5063:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$655_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$655_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 892, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5063:45:3", "typeDescriptions": { 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"7229:10:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7225:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 990, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7224:16:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7216:24:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "7209:31:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 993, "nodeType": "ExpressionStatement", "src": "7209:31:3" }, { "externalReferences": [ { "buf": { "declaration": 944, "isOffset": false, "isSlot": false, "src": "7342:3:3", "valueSize": 1 } }, { "len": { "declaration": 950, "isOffset": false, "isSlot": false, "src": "7469:3:3", "valueSize": 1 } }, { "off": { "declaration": 946, "isOffset": false, "isSlot": false, "src": "7463:3:3", "valueSize": 1 } }, { "data": { "declaration": 948, "isOffset": false, "isSlot": false, "src": "7531:4:3", "valueSize": 1 } }, { "mask": { "declaration": 975, "isOffset": false, "isSlot": false, "src": "7523:4:3", "valueSize": 1 } }, { "off": { "declaration": 946, "isOffset": false, "isSlot": false, "src": "7614:3:3", "valueSize": 1 } }, { "len": { "declaration": 950, "isOffset": false, "isSlot": false, "src": "7619:3:3", "valueSize": 1 } }, { "off": { "declaration": 946, "isOffset": false, "isSlot": false, "src": "7677:3:3", "valueSize": 1 } }, { "len": { "declaration": 950, "isOffset": false, "isSlot": false, "src": "7682:3:3", "valueSize": 1 } } ], "id": 994, "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": "7250:476:3" }, { "expression": { "argumentTypes": null, "id": 995, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 944, "src": "7727:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 954, "id": 996, "nodeType": "Return", "src": "7720:10:3" } ] }, "documentation": "@dev Writes up to 32 bytes to the buffer. Resizes if doing so would\n exceed the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@param len The number of bytes to write (left-aligned).\n@return The original buffer, for chaining.", "id": 998, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 951, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 944, "name": "buf", "nodeType": "VariableDeclaration", "scope": 998, "src": "6942:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 943, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "6942:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 946, "name": "off", "nodeType": "VariableDeclaration", "scope": 998, "src": "6961:8:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 945, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6961:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 948, "name": "data", "nodeType": "VariableDeclaration", "scope": 998, "src": "6971:12:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 947, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6971:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 950, "name": "len", "nodeType": "VariableDeclaration", "scope": 998, "src": "6985:8:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 949, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6985:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "6941:53:3" }, "returnParameters": { "id": 954, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 953, "name": "", "nodeType": "VariableDeclaration", "scope": 998, "src": "7016:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 952, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": 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"arguments": [ { "argumentTypes": null, "id": 1013, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1004, "src": "8187:4:3", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 1012, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8179:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1014, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8179:13:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 1015, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8194:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 1009, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 854, 998 ], "referencedDeclaration": 998, "src": "8163:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$655_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$655_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 1016, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8163:34:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 1008, "id": 1017, "nodeType": "Return", "src": "8156:41:3" } ] }, "documentation": "@dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 1019, "implemented": true, "kind": "function", "modifiers": [], "name": "writeBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 1005, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1000, "name": "buf", "nodeType": "VariableDeclaration", "scope": 1019, "src": "8065:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 999, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "8065:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1002, "name": "off", "nodeType": "VariableDeclaration", "scope": 1019, "src": "8084:8:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 1001, "name": "uint", "nodeType": "ElementaryTypeName", "src": "8084:4:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1004, "name": "data", "nodeType": "VariableDeclaration", "scope": 1019, "src": "8094:12:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 1003, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8094:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "value": null, "visibility": "internal" } ], "src": "8064:43:3" }, "returnParameters": { "id": 1008, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1007, "name": "", "nodeType": "VariableDeclaration", "scope": 1019, "src": "8131:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 1006, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "8131:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "8130:15:3" }, "scope": 1106, "src": "8043:161:3", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 1039, "nodeType": "Block", "src": "8565:69:3", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1029, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1021, "src": "8588:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 1030, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1021, "src": "8593:3:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 1031, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 652, "src": "8593:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 1032, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "8593:14:3", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 1034, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 1023, "src": "8617:4:3", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 1033, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8609:7:3", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 1035, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8609:13:3", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 1036, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8624:2:3", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 1028, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 854, 998 ], "referencedDeclaration": 998, "src": "8582:5:3", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$655_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$655_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 1037, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8582:45:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 1027, "id": 1038, "nodeType": "Return", "src": "8575:52:3" } ] }, "documentation": "@dev Appends a bytes20 to the buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@return The original buffer, for chhaining.", "id": 1040, "implemented": true, "kind": "function", "modifiers": [], "name": "appendBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 1024, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1021, "name": "buf", "nodeType": "VariableDeclaration", "scope": 1040, "src": "8494:17:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 1020, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "8494:6:3", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 1023, "name": "data", "nodeType": "VariableDeclaration", "scope": 1040, "src": "8513:12:3", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 1022, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8513:7:3", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "value": null, "visibility": "internal" } ], "src": "8493:33:3" }, "returnParameters": { "id": 1027, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1026, "name": "", "nodeType": "VariableDeclaration", "scope": 1040, "src": "8550:13:3", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$655_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 1025, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 655, "src": "8550:6:3", 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