{ "contractName": "Buffer", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.5.8+commit.23d335f2\"},\"language\":\"Solidity\",\"output\":{\"abi\":[],\"devdoc\":{\"details\":\"A library for working with mutable byte buffers in Solidity. * Byte buffers are mutable and expandable, and provide a variety of primitives for writing to them. At any time you can fetch a bytes object containing the current contents of the buffer. The bytes object should not be stored between operations, as it may change due to resizing of the buffer.\",\"methods\":{}},\"userdoc\":{\"methods\":{}}},\"settings\":{\"compilationTarget\":{\"@ensdomains/buffer/contracts/Buffer.sol\":\"Buffer\"},\"evmVersion\":\"petersburg\",\"libraries\":{},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"@ensdomains/buffer/contracts/Buffer.sol\":{\"keccak256\":\"0x1264adbd06f6e05b04539bb225063a988b7fa90343d068de60cdde6cfb6fa92d\",\"urls\":[\"bzzr://8f1cb39e242b73bb7fac1f48bf0380ccccad14f06aae9cf4f87329cc78186122\"]}},\"version\":1}", "bytecode": "0x604c6023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820d9bf989cef3ee27766e4a228ac26960245aa7cc6dda309c2c6a6e6bcfa67d6580029", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea165627a7a72305820d9bf989cef3ee27766e4a228ac26960245aa7cc6dda309c2c6a6e6bcfa67d6580029", "sourceMap": "403:10156:14:-;;132:2:-1;166:7;155:9;146:7;137:37;255:7;249:14;246:1;241:23;235:4;232:33;222:2;;269:9;222:2;293:9;290:1;283:20;323:4;314:7;306:22;347:7;338;331:24", "deployedSourceMap": "403:10156:14:-;;;;;;;;", "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(32, 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.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, (len + off) * 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, (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 /**\n * @dev Appends a byte to the end of the buffer. 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"name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2012, "src": "4191:3:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 2022, "id": 2089, "nodeType": "Return", "src": "4184:10:14" } ] }, "documentation": "@dev Writes a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The start offset to write to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 2091, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 2019, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2012, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2091, "src": "2890:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2011, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "2890:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct 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Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 2112, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 2098, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2093, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2112, "src": "4531:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2092, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "4531:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, 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"7206:16:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7198:24:14", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "7191:31:14", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 2229, "nodeType": "ExpressionStatement", "src": "7191:31:14" }, { "externalReferences": [ { "buf": { "declaration": 2181, "isOffset": false, "isSlot": false, "src": "7324:3:14", "valueSize": 1 } }, { "mask": { "declaration": 2211, "isOffset": false, "isSlot": false, "src": "7505:4:14", "valueSize": 1 } }, { "off": { "declaration": 2183, "isOffset": false, "isSlot": false, "src": "7445:3:14", "valueSize": 1 } }, { "len": { "declaration": 2187, "isOffset": false, "isSlot": false, "src": "7451:3:14", "valueSize": 1 } }, { "off": { "declaration": 2183, "isOffset": false, "isSlot": false, "src": "7596:3:14", "valueSize": 1 } }, { "len": { "declaration": 2187, "isOffset": false, "isSlot": false, "src": "7601:3:14", "valueSize": 1 } }, { "data": { "declaration": 2185, "isOffset": false, "isSlot": false, "src": "7513:4:14", "valueSize": 1 } }, { "off": { "declaration": 2183, "isOffset": false, "isSlot": false, "src": "7659:3:14", "valueSize": 1 } }, { "len": { "declaration": 2187, "isOffset": false, "isSlot": false, "src": "7664:3:14", "valueSize": 1 } } ], "id": 2230, "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": "7232:461:14" }, { "expression": { "argumentTypes": null, "id": 2231, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2181, "src": "7709:3:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 2191, 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Resizes if doing so would\n exceed the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@param len The number of bytes to write (left-aligned).\n@return The original buffer, for chaining.", "id": 2234, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 2188, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2181, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2234, "src": "6935:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2180, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "6935:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": 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"visibility": "internal" }, { "constant": false, "id": 2187, "name": "len", "nodeType": "VariableDeclaration", "scope": 2234, "src": "6978:8:14", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2186, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6978:4:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": "6934:53:14" }, "returnParameters": { "id": 2191, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2190, "name": "", "nodeType": "VariableDeclaration", "scope": 2234, "src": "7009:13:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2189, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "7009:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "7008:15:14" }, "scope": 2360, "src": "6920:799:14", "stateMutability": "pure", "superFunction": null, "visibility": "private" }, { "body": { "id": 2254, "nodeType": "Block", "src": "8128:58:14", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2246, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2236, "src": "8151:3:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "id": 2247, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2238, "src": "8156:3:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2249, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2240, "src": "8169:4:14", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 2248, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8161:7:14", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 2250, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8161:13:14", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 2251, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8176:2:14", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 2245, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 2091, 2234 ], "referencedDeclaration": 2234, "src": "8145:5:14", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$1896_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$1896_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 2252, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8145:34:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 2244, "id": 2253, "nodeType": "Return", "src": "8138:41:14" } ] }, "documentation": "@dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 2255, "implemented": true, "kind": "function", "modifiers": [], "name": "writeBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 2241, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2236, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2255, "src": "8047:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2235, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "8047:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2238, "name": "off", "nodeType": "VariableDeclaration", "scope": 2255, "src": "8066:8:14", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2237, "name": "uint", "nodeType": "ElementaryTypeName", "src": "8066:4:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2240, "name": "data", "nodeType": "VariableDeclaration", "scope": 2255, "src": "8076:12:14", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 2239, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8076:7:14", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "value": null, "visibility": "internal" } ], "src": "8046:43:14" }, "returnParameters": { "id": 2244, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2243, "name": "", "nodeType": "VariableDeclaration", "scope": 2255, "src": "8113:13:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2242, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "8113:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" } ], "src": "8112:15:14" }, "scope": 2360, "src": "8025:161:14", "stateMutability": "pure", "superFunction": null, "visibility": "internal" }, { "body": { "id": 2275, "nodeType": "Block", "src": "8547:69:14", "statements": [ { "expression": { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2265, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2257, "src": "8570:3:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 2266, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2257, "src": "8575:3:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 2267, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 1893, "src": "8575:7:14", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 2268, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "8575:14:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2270, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2259, "src": "8599:4:14", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 2269, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8591:7:14", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 2271, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8591:13:14", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 2272, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8606:2:14", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 2264, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 2091, 2234 ], "referencedDeclaration": 2234, "src": "8564:5:14", "typeDescriptions": { "typeIdentifier": 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Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@return The original buffer, for chhaining.", "id": 2276, "implemented": true, "kind": "function", "modifiers": [], "name": "appendBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 2260, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2257, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2276, "src": "8476:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2256, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "8476:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": 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"src": "1416:10:14" } ] }, "documentation": "@dev Initializes a buffer with an initial capacity.\n@param buf The buffer to initialize.\n@param capacity The number of bytes of space to allocate the buffer.\n@return The buffer, for chaining.", "id": 1931, "implemented": true, "kind": "function", "modifiers": [], "name": "init", "nodeType": "FunctionDefinition", "parameters": { "id": 1901, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 1898, "name": "buf", "nodeType": "VariableDeclaration", "scope": 1931, "src": "992:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 1897, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "992:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, 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"3970:21:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3958:33:14" }, { "externalReferences": [ { "src": { "declaration": 2055, "isOffset": false, "isSlot": false, "src": "4049:3:14", "valueSize": 1 } }, { "mask": { "declaration": 2077, "isOffset": false, "isSlot": false, "src": "4059:4:14", "valueSize": 1 } }, { "dest": { "declaration": 2052, "isOffset": false, "isSlot": false, "src": "4104:4:14", "valueSize": 1 } }, { "mask": { "declaration": 2077, "isOffset": false, "isSlot": false, "src": "4111:4:14", "valueSize": 1 } }, { "dest": { "declaration": 2052, "isOffset": false, "isSlot": false, "src": "4136:4:14", "valueSize": 1 } } ], "id": 2087, "nodeType": "InlineAssembly", "operations": "{\n let srcpart := and(mload(src), not(mask))\n let destpart := and(mload(dest), mask)\n mstore(dest, or(destpart, srcpart))\n}", "src": "4001:173:14" }, { "expression": { "argumentTypes": null, "id": 2088, 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Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The start offset to write to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 2091, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 2019, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2012, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2091, "src": "2890:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2011, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "2890:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct 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"src": "4645:3:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 2105, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 1893, "src": "4645:7:14", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 2106, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "4645:14:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 2107, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2095, "src": "4661:4:14", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "id": 2108, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2097, "src": "4667:3:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2102, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 2091, 2234 ], "referencedDeclaration": 2091, "src": "4634:5:14", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$1896_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$1896_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 2109, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4634:37:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 2101, "id": 2110, "nodeType": "Return", "src": "4627:44:14" } ] }, "documentation": "@dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@param len The number of bytes to copy.\n@return The original buffer, for chaining.", "id": 2112, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 2098, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2093, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2112, "src": "4531:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2092, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "4531:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2095, "name": "data", "nodeType": "VariableDeclaration", "scope": 2112, "src": "4550:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 2094, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4550:5:14", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2097, "name": "len", "nodeType": "VariableDeclaration", "scope": 2112, "src": "4569:8:14", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2096, "name": "uint", "nodeType": "ElementaryTypeName", "src": "4569:4:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" } ], "src": 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"id": 2122, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2114, "src": "5061:3:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 2123, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2114, "src": "5066:3:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 2124, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 1893, "src": "5066:7:14", "typeDescriptions": { "typeIdentifier": "t_bytes_memory", "typeString": "bytes memory" } }, "id": 2125, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5066:14:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "id": 2126, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2116, "src": "5082:4:14", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "argumentTypes": null, "expression": { "argumentTypes": null, "id": 2127, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2116, "src": "5088:4:14", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 2128, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "5088:11:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 2121, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 2091, 2234 ], "referencedDeclaration": 2091, "src": "5055:5:14", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$1896_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$1896_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 2129, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5055:45:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 2120, "id": 2130, "nodeType": "Return", "src": "5048:52:14" } ] }, "documentation": "@dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 2132, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 2117, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2114, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2132, "src": "4962:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2113, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "4962:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, 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Resizes if doing so would\n exceed the capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@param len The number of bytes to write (left-aligned).\n@return The original buffer, for chaining.", "id": 2234, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 2188, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2181, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2234, "src": "6935:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2180, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "6935:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": 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"typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2249, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2240, "src": "8169:4:14", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 2248, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8161:7:14", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 2250, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8161:13:14", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "argumentTypes": null, "hexValue": "3230", "id": 2251, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8176:2:14", "subdenomination": null, "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 2245, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 2091, 2234 ], "referencedDeclaration": 2234, "src": "8145:5:14", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$1896_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$1896_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 2252, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8145:34:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 2244, "id": 2253, "nodeType": "Return", "src": "8138:41:14" } ] }, "documentation": "@dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n@param buf The buffer to append to.\n@param off The offset to write at.\n@param data The data to append.\n@return The original buffer, for chaining.", "id": 2255, "implemented": true, "kind": "function", "modifiers": [], "name": "writeBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 2241, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2236, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2255, "src": "8047:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2235, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "8047:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2238, "name": "off", "nodeType": "VariableDeclaration", "scope": 2255, "src": "8066:8:14", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 2237, "name": "uint", "nodeType": "ElementaryTypeName", "src": "8066:4:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "value": null, "visibility": "internal" }, { "constant": false, "id": 2240, "name": "data", "nodeType": "VariableDeclaration", "scope": 2255, "src": "8076:12:14", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 2239, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8076:7:14", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "value": null, "visibility": "internal" } ], "src": "8046:43:14" 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"memberName": "length", "nodeType": "MemberAccess", "referencedDeclaration": null, "src": "8575:14:14", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "argumentTypes": null, "arguments": [ { "argumentTypes": null, "id": 2270, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 2259, "src": "8599:4:14", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 2269, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8591:7:14", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": "bytes32" }, "id": 2271, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": 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Resizes if doing so would exceed\n the capacity of the buffer.\n@param buf The buffer to append to.\n@param data The data to append.\n@return The original buffer, for chhaining.", "id": 2276, "implemented": true, "kind": "function", "modifiers": [], "name": "appendBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 2260, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 2257, "name": "buf", "nodeType": "VariableDeclaration", "scope": 2276, "src": "8476:17:14", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "contractScope": null, "id": 2256, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 1896, "src": "8476:6:14", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$1896_storage_ptr", "typeString": "struct Buffer.buffer" } }, "value": null, "visibility": "internal" }, { "constant": 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