{ "contractName": "Buffer", "abi": [], "metadata": "{\"compiler\":{\"version\":\"0.7.4+commit.3f05b770\"},\"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.\",\"kind\":\"dev\",\"methods\":{},\"version\":1},\"userdoc\":{\"kind\":\"user\",\"methods\":{},\"version\":1}},\"settings\":{\"compilationTarget\":{\"@ensdomains/buffer/contracts/Buffer.sol\":\"Buffer\"},\"evmVersion\":\"istanbul\",\"libraries\":{},\"metadata\":{\"bytecodeHash\":\"ipfs\"},\"optimizer\":{\"enabled\":false,\"runs\":200},\"remappings\":[]},\"sources\":{\"@ensdomains/buffer/contracts/Buffer.sol\":{\"keccak256\":\"0x3dc6d79ec7994ddf8ce80248f2d53635254b8e5b19617ee257ae5857e9da1bd1\",\"urls\":[\"bzz-raw://f72312eafad4c9d6f9917a5f4bd0555011a26bfbf86313f9d8de374097e7b61c\",\"dweb:/ipfs/QmcCBXetT1ie4GtA1N6HckQeucq7er4jc1yUbypYvMBjZv\"]}},\"version\":1}", "bytecode": "0x60566023600b82828239805160001a607314601657fe5b30600052607381538281f3fe73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220358a7e59b9d8a475188afe974097bdd3e3fe62be3398a3ab00221e8be5bf518d64736f6c63430007040033", "deployedBytecode": "0x73000000000000000000000000000000000000000030146080604052600080fdfea2646970667358221220358a7e59b9d8a475188afe974097bdd3e3fe62be3398a3ab00221e8be5bf518d64736f6c63430007040033", "immutableReferences": {}, "generatedSources": [], "deployedGeneratedSources": [], "sourceMap": "403:9735:20:-:0;;;;;;;;;;;;;;;;;;;;;;;;;", "deployedSourceMap": "403:9735:20:-:0;;;;;;;;", "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", "sourcePath": "@ensdomains/buffer/contracts/Buffer.sol", "ast": { "absolutePath": "@ensdomains/buffer/contracts/Buffer.sol", "exportedSymbols": { "Buffer": [ 6432 ] }, "id": 6433, "nodeType": "SourceUnit", "nodes": [ { "id": 5968, "literals": [ "solidity", ">", "0.4", ".18" ], "nodeType": "PragmaDirective", "src": "0:24:20" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 5969, "nodeType": "StructuredDocumentation", "src": "26:376:20", "text": " @dev A library for working with mutable byte buffers in Solidity.\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." }, "fullyImplemented": true, "id": 6432, "linearizedBaseContracts": [ 6432 ], "name": "Buffer", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "Buffer.buffer", "id": 5974, "members": [ { "constant": false, "id": 5971, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 5974, "src": "702:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" }, "typeName": { "id": 5970, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "702:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 5973, "mutability": "mutable", "name": "capacity", "nodeType": "VariableDeclaration", "scope": 5974, "src": "721:13:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5972, "name": "uint", "nodeType": "ElementaryTypeName", "src": "721:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "name": "buffer", "nodeType": "StructDefinition", "scope": 6432, "src": "678:63:20", "visibility": "public" }, { "body": { "id": 6009, "nodeType": "Block", "src": "1063:370:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5988, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5986, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 5984, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5979, "src": "1077:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "hexValue": "3332", "id": 5985, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1088:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "1077:13:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "30", "id": 5987, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1094:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1077:18:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 5999, "nodeType": "IfStatement", "src": "1073:81:20", "trueBody": { "id": 5998, "nodeType": "Block", "src": "1097:57:20", "statements": [ { "expression": { "id": 5996, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 5989, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5979, "src": "1111:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5995, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "3332", "id": 5990, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1123:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5993, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 5991, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5979, "src": "1129:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "hexValue": "3332", "id": 5992, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1140:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "1129:13:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 5994, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1128:15:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1123:20:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1111:32:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 5997, "nodeType": "ExpressionStatement", "src": "1111:32:20" } ] } }, { "expression": { "id": 6004, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 6000, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5977, "src": "1209:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6002, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "1209:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 6003, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5979, "src": "1224:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1209:23:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6005, "nodeType": "ExpressionStatement", "src": "1209:23:20" }, { "AST": { "nodeType": "YulBlock", "src": "1251:156:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "1265:22:20", "value": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1282:4:20", "type": "", "value": "0x40" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "1276:5:20" }, "nodeType": "YulFunctionCall", "src": "1276:11:20" }, "variables": [ { "name": "ptr", "nodeType": "YulTypedName", "src": "1269:3:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "1307:3:20" }, { "name": "ptr", "nodeType": "YulIdentifier", "src": "1312:3:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "1300:6:20" }, "nodeType": "YulFunctionCall", "src": "1300:16:20" }, "nodeType": "YulExpressionStatement", "src": "1300:16:20" }, { "expression": { "arguments": [ { "name": "ptr", "nodeType": "YulIdentifier", "src": "1336:3:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "1341:1:20", "type": "", "value": "0" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "1329:6:20" }, "nodeType": "YulFunctionCall", "src": "1329:14:20" }, "nodeType": "YulExpressionStatement", "src": "1329:14:20" }, { "expression": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1363:4:20", "type": "", "value": "0x40" }, { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1373:2:20", "type": "", "value": "32" }, { "arguments": [ { "name": "ptr", "nodeType": "YulIdentifier", "src": "1381:3:20" }, { "name": "capacity", "nodeType": "YulIdentifier", "src": "1386:8:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "1377:3:20" }, "nodeType": "YulFunctionCall", "src": "1377:18:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "1369:3:20" }, "nodeType": "YulFunctionCall", "src": "1369:27:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "1356:6:20" }, "nodeType": "YulFunctionCall", "src": "1356:41:20" }, "nodeType": "YulExpressionStatement", "src": "1356:41:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 5977, "isOffset": false, "isSlot": false, "src": "1307:3:20", "valueSize": 1 }, { "declaration": 5979, "isOffset": false, "isSlot": false, "src": "1386:8:20", "valueSize": 1 } ], "id": 6006, "nodeType": "InlineAssembly", "src": "1242:165:20" }, { "expression": { "id": 6007, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5977, "src": "1423:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 5983, "id": 6008, "nodeType": "Return", "src": "1416:10:20" } ] }, "documentation": { "id": 5975, "nodeType": "StructuredDocumentation", "src": "747:226:20", "text": " @dev Initializes a buffer with an initial capacity.\n @param buf The buffer to initialize.\n @param capacity The number of bytes of space to allocate the buffer.\n @return The buffer, for chaining." }, "id": 6010, "implemented": true, "kind": "function", "modifiers": [], "name": "init", "nodeType": "FunctionDefinition", "parameters": { "id": 5980, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5977, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6010, "src": "992:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 5976, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "992:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 5979, "mutability": "mutable", "name": "capacity", "nodeType": "VariableDeclaration", "scope": 6010, "src": "1011:13:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5978, "name": "uint", "nodeType": "ElementaryTypeName", "src": "1011:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "991:34:20" }, "returnParameters": { "id": 5983, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5982, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6010, "src": "1048:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 5981, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "1048:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "1047:15:20" }, "scope": 6432, "src": "978:455:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6036, "nodeType": "Block", "src": "1748:108:20", "statements": [ { "assignments": [ 6019 ], "declarations": [ { "constant": false, "id": 6019, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6036, "src": "1758:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6018, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "1758:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "id": 6020, "nodeType": "VariableDeclarationStatement", "src": "1758:17:20" }, { "expression": { "id": 6025, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 6021, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6019, "src": "1785:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6023, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "1785:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 6024, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6013, "src": "1795:1:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "1785:11:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6026, "nodeType": "ExpressionStatement", "src": "1785:11:20" }, { "expression": { "id": 6032, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 6027, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6019, "src": "1806:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6029, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "1806:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "expression": { "id": 6030, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6013, "src": "1821:1:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6031, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "1821:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1806:23:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6033, "nodeType": "ExpressionStatement", "src": "1806:23:20" }, { "expression": { "id": 6034, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6019, "src": "1846:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6017, "id": 6035, "nodeType": "Return", "src": "1839:10:20" } ] }, "documentation": { "id": 6011, "nodeType": "StructuredDocumentation", "src": "1439:232:20", "text": " @dev Initializes a new buffer from an existing bytes object.\n Changes to the buffer may mutate the original value.\n @param b The bytes object to initialize the buffer with.\n @return A new buffer." }, "id": 6037, "implemented": true, "kind": "function", "modifiers": [], "name": "fromBytes", "nodeType": "FunctionDefinition", "parameters": { "id": 6014, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6013, "mutability": "mutable", "name": "b", "nodeType": "VariableDeclaration", "scope": 6037, "src": "1695:14:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6012, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1695:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "1694:16:20" }, "returnParameters": { "id": 6017, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6016, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6037, "src": "1733:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6015, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "1733:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "1732:15:20" }, "scope": 6432, "src": "1676:180:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6059, "nodeType": "Block", "src": "1925:104:20", "statements": [ { "assignments": [ 6045 ], "declarations": [ { "constant": false, "id": 6045, "mutability": "mutable", "name": "oldbuf", "nodeType": "VariableDeclaration", "scope": 6059, "src": "1935:19:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6044, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1935:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "id": 6048, "initialValue": { "expression": { "id": 6046, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6039, "src": "1957:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6047, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "1957:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "1935:29:20" }, { "expression": { "arguments": [ { "id": 6050, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6039, "src": "1979:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "id": 6051, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6041, "src": "1984:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6049, "name": "init", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6010, "src": "1974:4:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6052, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1974:19:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6053, "nodeType": "ExpressionStatement", "src": "1974:19:20" }, { "expression": { "arguments": [ { "id": 6055, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6039, "src": "2010:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "id": 6056, "name": "oldbuf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6045, "src": "2015:6:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 6054, "name": "append", "nodeType": "Identifier", "overloadedDeclarations": [ 6195, 6216 ], "referencedDeclaration": 6216, "src": "2003:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,bytes memory) pure returns (struct Buffer.buffer memory)" } }, "id": 6057, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2003:19:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6058, "nodeType": "ExpressionStatement", "src": "2003:19:20" } ] }, "id": 6060, "implemented": true, "kind": "function", "modifiers": [], "name": "resize", "nodeType": "FunctionDefinition", "parameters": { "id": 6042, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6039, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6060, "src": "1878:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6038, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "1878:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6041, "mutability": "mutable", "name": "capacity", "nodeType": "VariableDeclaration", "scope": 6060, "src": "1897:13:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6040, "name": "uint", "nodeType": "ElementaryTypeName", "src": "1897:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1877:34:20" }, "returnParameters": { "id": 6043, "nodeType": "ParameterList", "parameters": [], "src": "1925:0:20" }, "scope": 6432, "src": "1862:167:20", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 6078, "nodeType": "Block", "src": "2091:78:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6071, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6069, "name": "a", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6062, "src": "2105:1:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "id": 6070, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6064, "src": "2109:1:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "2105:5:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6075, "nodeType": "IfStatement", "src": "2101:44:20", "trueBody": { "id": 6074, "nodeType": "Block", "src": "2112:33:20", "statements": [ { "expression": { "id": 6072, "name": "a", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6062, "src": "2133:1:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 6068, "id": 6073, "nodeType": "Return", "src": "2126:8:20" } ] } }, { "expression": { "id": 6076, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6064, "src": "2161:1:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 6068, "id": 6077, "nodeType": "Return", "src": "2154:8:20" } ] }, "id": 6079, "implemented": true, "kind": "function", "modifiers": [], "name": "max", "nodeType": "FunctionDefinition", "parameters": { "id": 6065, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6062, "mutability": "mutable", "name": "a", "nodeType": "VariableDeclaration", "scope": 6079, "src": "2048:6:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6061, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2048:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6064, "mutability": "mutable", "name": "b", "nodeType": "VariableDeclaration", "scope": 6079, "src": "2056:6:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6063, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2056:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2047:16:20" }, "returnParameters": { "id": 6068, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6067, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6079, "src": "2085:4:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6066, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2085:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2084:6:20" }, "scope": 6432, "src": "2035:134:20", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 6090, "nodeType": "Block", "src": "2392:123:20", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "2411:78:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "2425:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "2445:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2439:5:20" }, "nodeType": "YulFunctionCall", "src": "2439:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "2429:6:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "2469:6:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2477:1:20", "type": "", "value": "0" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "2462:6:20" }, "nodeType": "YulFunctionCall", "src": "2462:17:20" }, "nodeType": "YulExpressionStatement", "src": "2462:17:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6082, "isOffset": false, "isSlot": false, "src": "2445:3:20", "valueSize": 1 } ], "id": 6087, "nodeType": "InlineAssembly", "src": "2402:87:20" }, { "expression": { "id": 6088, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6082, "src": "2505:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6086, "id": 6089, "nodeType": "Return", "src": "2498:10:20" } ] }, "documentation": { "id": 6080, "nodeType": "StructuredDocumentation", "src": "2175:137:20", "text": " @dev Sets buffer length to 0.\n @param buf The buffer to truncate.\n @return The original buffer, for chaining.." }, "id": 6091, "implemented": true, "kind": "function", "modifiers": [], "name": "truncate", "nodeType": "FunctionDefinition", "parameters": { "id": 6083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6082, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6091, "src": "2335:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6081, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "2335:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "2334:19:20" }, "returnParameters": { "id": 6086, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6085, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6091, "src": "2377:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6084, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "2377:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "2376:15:20" }, "scope": 6432, "src": "2317:198:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6172, "nodeType": "Block", "src": "2985:1216:20", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6109, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6106, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3003:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "expression": { "id": 6107, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6098, "src": "3010:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6108, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "3010:11:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3003:18:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 6105, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2995:7:20", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 6110, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2995:27:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6111, "nodeType": "ExpressionStatement", "src": "2995:27:20" }, { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6117, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6114, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6112, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6096, "src": "3037:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6113, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3043:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3037:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "expression": { "id": 6115, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "3049:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6116, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "3049:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3037:24:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6132, "nodeType": "IfStatement", "src": "3033:100:20", "trueBody": { "id": 6131, "nodeType": "Block", "src": "3063:70:20", "statements": [ { "expression": { "arguments": [ { "id": 6119, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "3084:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6128, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "expression": { "id": 6121, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "3093:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6122, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "3093:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6125, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6123, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3107:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6124, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6096, "src": "3113:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3107:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6120, "name": "max", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6079, "src": "3089:3:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 6126, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3089:28:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "hexValue": "32", "id": 6127, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3120:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3089:32:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6118, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6060, "src": "3077:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 6129, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3077:45:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6130, "nodeType": "ExpressionStatement", "src": "3077:45:20" } ] } }, { "assignments": [ 6134 ], "declarations": [ { "constant": false, "id": 6134, "mutability": "mutable", "name": "dest", "nodeType": "VariableDeclaration", "scope": 6172, "src": "3143:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6133, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3143:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6135, "nodeType": "VariableDeclarationStatement", "src": "3143:9:20" }, { "assignments": [ 6137 ], "declarations": [ { "constant": false, "id": 6137, "mutability": "mutable", "name": "src", "nodeType": "VariableDeclaration", "scope": 6172, "src": "3162:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6136, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3162:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6138, "nodeType": "VariableDeclarationStatement", "src": "3162:8:20" }, { "AST": { "nodeType": "YulBlock", "src": "3189:502:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "3252:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "3272:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "3266:5:20" }, "nodeType": "YulFunctionCall", "src": "3266:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "3256:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "3335:27:20", "value": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "3355:6:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "3349:5:20" }, "nodeType": "YulFunctionCall", "src": "3349:13:20" }, "variables": [ { "name": "buflen", "nodeType": "YulTypedName", "src": "3339:6:20", "type": "" } ] }, { "nodeType": "YulAssignment", "src": "3454:33:20", "value": { "arguments": [ { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "3470:6:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "3478:2:20", "type": "", "value": "32" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3466:3:20" }, "nodeType": "YulFunctionCall", "src": "3466:15:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "3483:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3462:3:20" }, "nodeType": "YulFunctionCall", "src": "3462:25:20" }, "variableNames": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "3454:4:20" } ] }, { "body": { "nodeType": "YulBlock", "src": "3587:61:20", "statements": [ { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "3612:6:20" }, { "arguments": [ { "name": "len", "nodeType": "YulIdentifier", "src": "3624:3:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "3629:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3620:3:20" }, "nodeType": "YulFunctionCall", "src": "3620:13:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "3605:6:20" }, "nodeType": "YulFunctionCall", "src": "3605:29:20" }, "nodeType": "YulExpressionStatement", "src": "3605:29:20" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "len", "nodeType": "YulIdentifier", "src": "3568:3:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "3573:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3564:3:20" }, "nodeType": "YulFunctionCall", "src": "3564:13:20" }, { "name": "buflen", "nodeType": "YulIdentifier", "src": "3579:6:20" } ], "functionName": { "name": "gt", "nodeType": "YulIdentifier", "src": "3561:2:20" }, "nodeType": "YulFunctionCall", "src": "3561:25:20" }, "nodeType": "YulIf", "src": "3558:2:20" }, { "nodeType": "YulAssignment", "src": "3661:20:20", "value": { "arguments": [ { "name": "data", "nodeType": "YulIdentifier", "src": "3672:4:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "3678:2:20", "type": "", "value": "32" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3668:3:20" }, "nodeType": "YulFunctionCall", "src": "3668:13:20" }, "variableNames": [ { "name": "src", "nodeType": "YulIdentifier", "src": "3661:3:20" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6094, "isOffset": false, "isSlot": false, "src": "3272:3:20", "valueSize": 1 }, { "declaration": 6098, "isOffset": false, "isSlot": false, "src": "3672:4:20", "valueSize": 1 }, { "declaration": 6134, "isOffset": false, "isSlot": false, "src": "3454:4:20", "valueSize": 1 }, { "declaration": 6100, "isOffset": false, "isSlot": false, "src": "3568:3:20", "valueSize": 1 }, { "declaration": 6100, "isOffset": false, "isSlot": false, "src": "3624:3:20", "valueSize": 1 }, { "declaration": 6096, "isOffset": false, "isSlot": false, "src": "3483:3:20", "valueSize": 1 }, { "declaration": 6096, "isOffset": false, "isSlot": false, "src": "3573:3:20", "valueSize": 1 }, { "declaration": 6096, "isOffset": false, "isSlot": false, "src": "3629:3:20", "valueSize": 1 }, { "declaration": 6137, "isOffset": false, "isSlot": false, "src": "3661:3:20", "valueSize": 1 } ], "id": 6139, "nodeType": "InlineAssembly", "src": "3180:511:20" }, { "body": { "id": 6156, "nodeType": "Block", "src": "3780:136:20", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "3803:56:20", "statements": [ { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "3828:4:20" }, { "arguments": [ { "name": "src", "nodeType": "YulIdentifier", "src": "3840:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "3834:5:20" }, "nodeType": "YulFunctionCall", "src": "3834:10:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "3821:6:20" }, "nodeType": "YulFunctionCall", "src": "3821:24:20" }, "nodeType": "YulExpressionStatement", "src": "3821:24:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6134, "isOffset": false, "isSlot": false, "src": "3828:4:20", "valueSize": 1 }, { "declaration": 6137, "isOffset": false, "isSlot": false, "src": "3840:3:20", "valueSize": 1 } ], "id": 6147, "nodeType": "InlineAssembly", "src": "3794:65:20" }, { "expression": { "id": 6150, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 6148, "name": "dest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6134, "src": "3872:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "hexValue": "3332", "id": 6149, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3880:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3872:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6151, "nodeType": "ExpressionStatement", "src": "3872:10:20" }, { "expression": { "id": 6154, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 6152, "name": "src", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6137, "src": "3896:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "hexValue": "3332", "id": 6153, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3903:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3896:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6155, "nodeType": "ExpressionStatement", "src": "3896:9:20" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6142, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6140, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3758:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "hexValue": "3332", "id": 6141, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3765:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3758:9:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6157, "loopExpression": { "expression": { "id": 6145, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 6143, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3769:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "hexValue": "3332", "id": 6144, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3776:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3769:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6146, "nodeType": "ExpressionStatement", "src": "3769:9:20" }, "nodeType": "ForStatement", "src": "3751:165:20" }, { "assignments": [ 6159 ], "declarations": [ { "constant": false, "id": 6159, "mutability": "mutable", "name": "mask", "nodeType": "VariableDeclaration", "scope": 6172, "src": "3958:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6158, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3958:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6168, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6167, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6165, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "323536", "id": 6160, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3970:3:20", "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6163, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "3332", "id": 6161, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3978:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "id": 6162, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3983:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3978:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6164, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3977:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3970:17:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 6166, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3990:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "3970:21:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3958:33:20" }, { "AST": { "nodeType": "YulBlock", "src": "4010:164:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "4024:41:20", "value": { "arguments": [ { "arguments": [ { "name": "src", "nodeType": "YulIdentifier", "src": "4049:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "4043:5:20" }, "nodeType": "YulFunctionCall", "src": "4043:10:20" }, { "arguments": [ { "name": "mask", "nodeType": "YulIdentifier", "src": "4059:4:20" } ], "functionName": { "name": "not", "nodeType": "YulIdentifier", "src": "4055:3:20" }, "nodeType": "YulFunctionCall", "src": "4055:9:20" } ], "functionName": { "name": "and", "nodeType": "YulIdentifier", "src": "4039:3:20" }, "nodeType": "YulFunctionCall", "src": "4039:26:20" }, "variables": [ { "name": "srcpart", "nodeType": "YulTypedName", "src": "4028:7:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "4078:38:20", "value": { "arguments": [ { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "4104:4:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "4098:5:20" }, "nodeType": "YulFunctionCall", "src": "4098:11:20" }, { "name": "mask", "nodeType": "YulIdentifier", "src": "4111:4:20" } ], "functionName": { "name": "and", "nodeType": "YulIdentifier", "src": "4094:3:20" }, "nodeType": "YulFunctionCall", "src": "4094:22:20" }, "variables": [ { "name": "destpart", "nodeType": "YulTypedName", "src": "4082:8:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "4136:4:20" }, { "arguments": [ { "name": "destpart", "nodeType": "YulIdentifier", "src": "4145:8:20" }, { "name": "srcpart", "nodeType": "YulIdentifier", "src": "4155:7:20" } ], "functionName": { "name": "or", "nodeType": "YulIdentifier", "src": "4142:2:20" }, "nodeType": "YulFunctionCall", "src": "4142:21:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "4129:6:20" }, "nodeType": "YulFunctionCall", "src": "4129:35:20" }, "nodeType": "YulExpressionStatement", "src": "4129:35:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6134, "isOffset": false, "isSlot": false, "src": "4104:4:20", "valueSize": 1 }, { "declaration": 6134, "isOffset": false, "isSlot": false, "src": "4136:4:20", "valueSize": 1 }, { "declaration": 6159, "isOffset": false, "isSlot": false, "src": "4059:4:20", "valueSize": 1 }, { "declaration": 6159, "isOffset": false, "isSlot": false, "src": "4111:4:20", "valueSize": 1 }, { "declaration": 6137, "isOffset": false, "isSlot": false, "src": "4049:3:20", "valueSize": 1 } ], "id": 6169, "nodeType": "InlineAssembly", "src": "4001:173:20" }, { "expression": { "id": 6170, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "4191:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6104, "id": 6171, "nodeType": "Return", "src": "4184:10:20" } ] }, "documentation": { "id": 6092, "nodeType": "StructuredDocumentation", "src": "2521:349:20", "text": " @dev Writes a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param off The start offset to write to.\n @param data The data to append.\n @param len The number of bytes to copy.\n @return The original buffer, for chaining." }, "id": 6173, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 6101, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6094, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2890:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6093, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "2890:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6096, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2909:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6095, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2909:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6098, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2919:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6097, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2919:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 6100, "mutability": "mutable", "name": "len", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2938:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6099, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2938:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2889:58:20" }, "returnParameters": { "id": 6104, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6103, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2970:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6102, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "2970:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "2969:15:20" }, "scope": 6432, "src": "2875:1326:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6194, "nodeType": "Block", "src": "4617:61:20", "statements": [ { "expression": { "arguments": [ { "id": 6186, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6176, "src": "4640:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6187, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6176, "src": "4645:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6188, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "4645:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6189, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "4645:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 6190, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6178, "src": "4661:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "id": 6191, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6180, "src": "4667:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6185, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6173, "src": "4634:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6192, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4634:37:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6184, "id": 6193, "nodeType": "Return", "src": "4627:44:20" } ] }, "documentation": { "id": 6174, "nodeType": "StructuredDocumentation", "src": "4207:303:20", "text": " @dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @param len The number of bytes to copy.\n @return The original buffer, for chaining." }, "id": 6195, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 6181, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6176, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6195, "src": "4531:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6175, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "4531:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6178, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6195, "src": "4550:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6177, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4550:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 6180, "mutability": "mutable", "name": "len", "nodeType": "VariableDeclaration", "scope": 6195, "src": "4569:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6179, "name": "uint", "nodeType": "ElementaryTypeName", "src": "4569:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "4530:48:20" }, "returnParameters": { "id": 6184, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6183, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6195, "src": "4602:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6182, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "4602:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "4601:15:20" }, "scope": 6432, "src": "4515:163:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6215, "nodeType": "Block", "src": "5038:69:20", "statements": [ { "expression": { "arguments": [ { "id": 6206, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6198, "src": "5061:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6207, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6198, "src": "5066:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6208, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "5066:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6209, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "5066:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 6210, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6200, "src": "5082:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "expression": { "id": 6211, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6200, "src": "5088:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6212, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "5088:11:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6205, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6173, "src": "5055:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6213, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5055:45:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6204, "id": 6214, "nodeType": "Return", "src": "5048:52:20" } ] }, "documentation": { "id": 6196, "nodeType": "StructuredDocumentation", "src": "4684:257:20", "text": " @dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6216, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 6201, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6198, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6216, "src": "4962:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6197, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "4962:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6200, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6216, "src": "4981:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6199, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4981:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "4961:38:20" }, "returnParameters": { "id": 6204, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6203, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6216, "src": "5023:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6202, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "5023:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "5022:15:20" }, "scope": 6432, "src": "4946:161:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6245, "nodeType": "Block", "src": "5517:617:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6231, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6228, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6221, "src": "5531:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "expression": { "id": 6229, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6219, "src": "5538:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6230, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "5538:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5531:19:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6241, "nodeType": "IfStatement", "src": "5527:79:20", "trueBody": { "id": 6240, "nodeType": "Block", "src": "5552:54:20", "statements": [ { "expression": { "arguments": [ { "id": 6233, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6219, "src": "5573:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6237, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 6234, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6219, "src": "5578:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6235, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "5578:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "hexValue": "32", "id": 6236, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5593:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "5578:16:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6232, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6060, "src": "5566:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 6238, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5566:29:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6239, "nodeType": "ExpressionStatement", "src": "5566:29:20" } ] } }, { "AST": { "nodeType": "YulBlock", "src": "5625:483:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "5688:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "5708:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "5702:5:20" }, "nodeType": "YulFunctionCall", "src": "5702:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "5692:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "5771:27:20", "value": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "5791:6:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "5785:5:20" }, "nodeType": "YulFunctionCall", "src": "5785:13:20" }, "variables": [ { "name": "buflen", "nodeType": "YulTypedName", "src": "5775:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "5881:37:20", "value": { "arguments": [ { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "5901:6:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "5909:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "5897:3:20" }, "nodeType": "YulFunctionCall", "src": "5897:16:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "5915:2:20", "type": "", "value": "32" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "5893:3:20" }, "nodeType": "YulFunctionCall", "src": "5893:25:20" }, "variables": [ { "name": "dest", "nodeType": "YulTypedName", "src": "5885:4:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "5939:4:20" }, { "name": "data", "nodeType": "YulIdentifier", "src": "5945:4:20" } ], "functionName": { "name": "mstore8", "nodeType": "YulIdentifier", "src": "5931:7:20" }, "nodeType": "YulFunctionCall", "src": "5931:19:20" }, "nodeType": "YulExpressionStatement", "src": "5931:19:20" }, { "body": { "nodeType": "YulBlock", "src": "6036:62:20", "statements": [ { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "6061:6:20" }, { "arguments": [ { "name": "buflen", "nodeType": "YulIdentifier", "src": "6073:6:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "6081:1:20", "type": "", "value": "1" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "6069:3:20" }, "nodeType": "YulFunctionCall", "src": "6069:14:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "6054:6:20" }, "nodeType": "YulFunctionCall", "src": "6054:30:20" }, "nodeType": "YulExpressionStatement", "src": "6054:30:20" } ] }, "condition": { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "6023:3:20" }, { "name": "buflen", "nodeType": "YulIdentifier", "src": "6028:6:20" } ], "functionName": { "name": "eq", "nodeType": "YulIdentifier", "src": "6020:2:20" }, "nodeType": "YulFunctionCall", "src": "6020:15:20" }, "nodeType": "YulIf", "src": "6017:2:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6219, "isOffset": false, "isSlot": false, "src": "5708:3:20", "valueSize": 1 }, { "declaration": 6223, "isOffset": false, "isSlot": false, "src": "5945:4:20", "valueSize": 1 }, { "declaration": 6221, "isOffset": false, "isSlot": false, "src": "5909:3:20", "valueSize": 1 }, { "declaration": 6221, "isOffset": false, "isSlot": false, "src": "6023:3:20", "valueSize": 1 } ], "id": 6242, "nodeType": "InlineAssembly", "src": "5616:492:20" }, { "expression": { "id": 6243, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6219, "src": "6124:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6227, "id": 6244, "nodeType": "Return", "src": "6117:10:20" } ] }, "documentation": { "id": 6217, "nodeType": "StructuredDocumentation", "src": "5113:301:20", "text": " @dev Writes a byte to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n @param buf The buffer to append to.\n @param off The offset to write the byte at.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6246, "implemented": true, "kind": "function", "modifiers": [], "name": "writeUint8", "nodeType": "FunctionDefinition", "parameters": { "id": 6224, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6219, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6246, "src": "5439:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6218, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "5439:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6221, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6246, "src": "5458:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6220, "name": "uint", "nodeType": "ElementaryTypeName", "src": "5458:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6223, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6246, "src": "5468:10:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 6222, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "5468:5:20", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "src": "5438:41:20" }, "returnParameters": { "id": 6227, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6226, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6246, "src": "5502:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6225, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "5502:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "5501:15:20" }, "scope": 6432, "src": "5419:715:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6264, "nodeType": "Block", "src": "6486:61:20", "statements": [ { "expression": { "arguments": [ { "id": 6257, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6249, "src": "6514:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6258, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6249, "src": "6519:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6259, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "6519:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6260, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "6519:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 6261, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6251, "src": "6535:4:20", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" } ], "id": 6256, "name": "writeUint8", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6246, "src": "6503:10:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_uint8_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,uint8) pure returns (struct Buffer.buffer memory)" } }, "id": 6262, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6503:37:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6255, "id": 6263, "nodeType": "Return", "src": "6496:44:20" } ] }, "documentation": { "id": 6247, "nodeType": "StructuredDocumentation", "src": "6140:252:20", "text": " @dev Appends a byte to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6265, "implemented": true, "kind": "function", "modifiers": [], "name": "appendUint8", "nodeType": "FunctionDefinition", "parameters": { "id": 6252, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6249, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6265, "src": "6418:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6248, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "6418:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6251, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6265, "src": "6437:10:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 6250, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "6437:5:20", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "src": "6417:31:20" }, "returnParameters": { "id": 6255, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6254, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6265, "src": "6471:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6253, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "6471:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "6470:15:20" }, "scope": 6432, "src": "6397:150:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6320, "nodeType": "Block", "src": "7024:695:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6284, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6281, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6279, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6274, "src": "7038:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6280, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6270, "src": "7044:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7038:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "expression": { "id": 6282, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6268, "src": "7050:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6283, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "7050:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7038:24:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6296, "nodeType": "IfStatement", "src": "7034:83:20", "trueBody": { "id": 6295, "nodeType": "Block", "src": "7064:53:20", "statements": [ { "expression": { "arguments": [ { "id": 6286, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6268, "src": "7085:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6292, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6289, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6287, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6274, "src": "7091:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6288, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6270, "src": "7097:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7091:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6290, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7090:11:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "hexValue": "32", "id": 6291, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7104:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "7090:15:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6285, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6060, "src": "7078:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 6293, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7078:28:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6294, "nodeType": "ExpressionStatement", "src": "7078:28:20" } ] } }, { "assignments": [ 6298 ], "declarations": [ { "constant": false, "id": 6298, "mutability": "mutable", "name": "mask", "nodeType": "VariableDeclaration", "scope": 6320, "src": "7127:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6297, "name": "uint", "nodeType": "ElementaryTypeName", "src": "7127:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6304, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6303, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6301, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "323536", "id": 6299, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7139:3:20", "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "id": 6300, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6274, "src": "7146:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7139:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 6302, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7152:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "7139:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "7127:26:20" }, { "expression": { "id": 6315, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 6305, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6272, "src": "7191:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 6314, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6306, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6272, "src": "7198:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": ">>", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6312, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "38", "id": 6307, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7207:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_8_by_1", "typeString": "int_const 8" }, "value": "8" }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6310, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "3332", "id": 6308, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7212:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "id": 6309, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6274, "src": "7217:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7212:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6311, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7211:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7207:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6313, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7206:16:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7198:24:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "7191:31:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 6316, "nodeType": "ExpressionStatement", "src": "7191:31:20" }, { "AST": { "nodeType": "YulBlock", "src": "7241:452:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "7304:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "7324:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "7318:5:20" }, "nodeType": "YulFunctionCall", "src": "7318:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "7308:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "7417:38:20", "value": { "arguments": [ { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "7437:6:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "7445:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "7433:3:20" }, "nodeType": "YulFunctionCall", "src": "7433:16:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "7451:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "7429:3:20" }, "nodeType": "YulFunctionCall", "src": "7429:26:20" }, "variables": [ { "name": "dest", "nodeType": "YulTypedName", "src": "7421:4:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "7475:4:20" }, { "arguments": [ { "arguments": [ { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "7494:4:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "7488:5:20" }, "nodeType": "YulFunctionCall", "src": "7488:11:20" }, { "arguments": [ { "name": "mask", "nodeType": "YulIdentifier", "src": "7505:4:20" } ], "functionName": { "name": "not", "nodeType": "YulIdentifier", "src": "7501:3:20" }, "nodeType": "YulFunctionCall", "src": "7501:9:20" } ], "functionName": { "name": "and", "nodeType": "YulIdentifier", "src": "7484:3:20" }, "nodeType": "YulFunctionCall", "src": "7484:27:20" }, { "name": "data", "nodeType": "YulIdentifier", "src": "7513:4:20" } ], "functionName": { "name": "or", "nodeType": "YulIdentifier", "src": "7481:2:20" }, "nodeType": "YulFunctionCall", "src": "7481:37:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "7468:6:20" }, "nodeType": "YulFunctionCall", "src": "7468:51:20" }, "nodeType": "YulExpressionStatement", "src": "7468:51:20" }, { "body": { "nodeType": "YulBlock", "src": "7622:61:20", "statements": [ { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "7647:6:20" }, { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "7659:3:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "7664:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "7655:3:20" }, "nodeType": "YulFunctionCall", "src": "7655:13:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "7640:6:20" }, "nodeType": "YulFunctionCall", "src": "7640:29:20" }, "nodeType": "YulExpressionStatement", "src": "7640:29:20" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "7596:3:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "7601:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "7592:3:20" }, "nodeType": "YulFunctionCall", "src": "7592:13:20" }, { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "7613:6:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "7607:5:20" }, "nodeType": "YulFunctionCall", "src": "7607:13:20" } ], "functionName": { "name": "gt", "nodeType": "YulIdentifier", "src": "7589:2:20" }, "nodeType": "YulFunctionCall", "src": "7589:32:20" }, "nodeType": "YulIf", "src": "7586:2:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6268, "isOffset": false, "isSlot": false, "src": "7324:3:20", "valueSize": 1 }, { "declaration": 6272, "isOffset": false, "isSlot": false, "src": "7513:4:20", "valueSize": 1 }, { "declaration": 6274, "isOffset": false, "isSlot": false, "src": "7451:3:20", "valueSize": 1 }, { "declaration": 6274, "isOffset": false, "isSlot": false, "src": "7601:3:20", "valueSize": 1 }, { "declaration": 6274, "isOffset": false, "isSlot": false, "src": "7664:3:20", "valueSize": 1 }, { "declaration": 6298, "isOffset": false, "isSlot": false, "src": "7505:4:20", "valueSize": 1 }, { "declaration": 6270, "isOffset": false, "isSlot": false, "src": "7445:3:20", "valueSize": 1 }, { "declaration": 6270, "isOffset": false, "isSlot": false, "src": "7596:3:20", "valueSize": 1 }, { "declaration": 6270, "isOffset": false, "isSlot": false, "src": "7659:3:20", "valueSize": 1 } ], "id": 6317, "nodeType": "InlineAssembly", "src": "7232:461:20" }, { "expression": { "id": 6318, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6268, "src": "7709:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6278, "id": 6319, "nodeType": "Return", "src": "7702:10:20" } ] }, "documentation": { "id": 6266, "nodeType": "StructuredDocumentation", "src": "6553:362:20", "text": " @dev Writes up to 32 bytes to the buffer. Resizes if doing so would\n exceed the capacity of the buffer.\n @param buf The buffer to append to.\n @param off The offset to write at.\n @param data The data to append.\n @param len The number of bytes to write (left-aligned).\n @return The original buffer, for chaining." }, "id": 6321, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 6275, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6268, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6321, "src": "6935:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6267, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "6935:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6270, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6321, "src": "6954:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6269, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6954:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6272, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6321, "src": "6964:12:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 6271, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6964:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 6274, "mutability": "mutable", "name": "len", "nodeType": "VariableDeclaration", "scope": 6321, "src": "6978:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6273, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6978:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "6934:53:20" }, "returnParameters": { "id": 6278, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6277, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6321, "src": "7009:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6276, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "7009:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "7008:15:20" }, "scope": 6432, "src": "6920:799:20", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 6343, "nodeType": "Block", "src": "8128:58:20", "statements": [ { "expression": { "arguments": [ { "id": 6334, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6324, "src": "8151:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "id": 6335, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6326, "src": "8156:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "id": 6338, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6328, "src": "8169:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 6337, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8161:7:20", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": { "id": 6336, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8161:7:20", "typeDescriptions": {} } }, "id": 6339, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8161:13:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "hexValue": "3230", "id": 6340, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8176:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 6333, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6321, "src": "8145:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6341, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8145:34:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6332, "id": 6342, "nodeType": "Return", "src": "8138:41:20" } ] }, "documentation": { "id": 6322, "nodeType": "StructuredDocumentation", "src": "7725:295:20", "text": " @dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n @param buf The buffer to append to.\n @param off The offset to write at.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6344, "implemented": true, "kind": "function", "modifiers": [], "name": "writeBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 6329, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6324, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6344, "src": "8047:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6323, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8047:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6326, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6344, "src": "8066:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6325, "name": "uint", "nodeType": "ElementaryTypeName", "src": "8066:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6328, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6344, "src": "8076:12:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 6327, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8076:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "visibility": "internal" } ], "src": "8046:43:20" }, "returnParameters": { "id": 6332, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6331, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6344, "src": "8113:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6330, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8113:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "8112:15:20" }, "scope": 6432, "src": "8025:161:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6366, "nodeType": "Block", "src": "8547:69:20", "statements": [ { "expression": { "arguments": [ { "id": 6355, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6347, "src": "8570:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6356, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6347, "src": "8575:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6357, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "8575:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6358, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "8575:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "id": 6361, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6349, "src": "8599:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 6360, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8591:7:20", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": { "id": 6359, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8591:7:20", "typeDescriptions": {} } }, "id": 6362, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8591:13:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "hexValue": "3230", "id": 6363, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8606:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 6354, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6321, "src": "8564:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6364, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8564:45:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6353, "id": 6365, "nodeType": "Return", "src": "8557:52:20" } ] }, "documentation": { "id": 6345, "nodeType": "StructuredDocumentation", "src": "8192:256:20", "text": " @dev Appends a bytes20 to the buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @return The original buffer, for chhaining." }, "id": 6367, "implemented": true, "kind": "function", "modifiers": [], "name": "appendBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 6350, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6347, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6367, "src": "8476:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6346, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8476:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6349, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6367, "src": "8495:12:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 6348, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8495:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "visibility": "internal" } ], "src": "8475:33:20" }, "returnParameters": { "id": 6353, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6352, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6367, "src": "8532:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6351, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8532:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "8531:15:20" }, "scope": 6432, "src": "8453:163:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6386, "nodeType": "Block", "src": "8976:60:20", "statements": [ { "expression": { "arguments": [ { "id": 6378, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6370, "src": "8999:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6379, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6370, "src": "9004:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6380, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "9004:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6381, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "9004:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 6382, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6372, "src": "9020:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "hexValue": "3332", "id": 6383, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9026:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" } ], "id": 6377, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6321, "src": "8993:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6384, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8993:36:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6376, "id": 6385, "nodeType": "Return", "src": "8986:43:20" } ] }, "documentation": { "id": 6368, "nodeType": "StructuredDocumentation", "src": "8622:255:20", "text": " @dev Appends a bytes32 to the buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6387, "implemented": true, "kind": "function", "modifiers": [], "name": "appendBytes32", "nodeType": "FunctionDefinition", "parameters": { "id": 6373, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6370, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6387, "src": "8905:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6369, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8905:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6372, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6387, "src": "8924:12:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 6371, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8924:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8904:33:20" }, "returnParameters": { "id": 6376, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6375, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6387, "src": "8961:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6374, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8961:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "8960:15:20" }, "scope": 6432, "src": "8882:154:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6430, "nodeType": "Block", "src": "9510:626:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6406, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6403, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6401, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6396, "src": "9524:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6402, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6392, "src": "9530:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9524:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "expression": { "id": 6404, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6390, "src": "9536:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6405, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "9536:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9524:24:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6418, "nodeType": "IfStatement", "src": "9520:83:20", "trueBody": { "id": 6417, "nodeType": "Block", "src": "9550:53:20", "statements": [ { "expression": { "arguments": [ { "id": 6408, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6390, "src": "9571:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6414, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6411, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6409, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6396, "src": "9577:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6410, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6392, "src": "9583:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9577:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6412, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "9576:11:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "hexValue": "32", "id": 6413, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9590:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "9576:15:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6407, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6060, "src": "9564:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 6415, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9564:28:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6416, "nodeType": "ExpressionStatement", "src": "9564:28:20" } ] } }, { "assignments": [ 6420 ], "declarations": [ { "constant": false, "id": 6420, "mutability": "mutable", "name": "mask", "nodeType": "VariableDeclaration", "scope": 6430, "src": "9613:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6419, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9613:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6426, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6425, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6423, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "323536", "id": 6421, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9625:3:20", "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "id": 6422, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6396, "src": "9632:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9625:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 6424, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9638:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "9625:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "9613:26:20" }, { "AST": { "nodeType": "YulBlock", "src": "9658:452:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "9721:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "9741:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "9735:5:20" }, "nodeType": "YulFunctionCall", "src": "9735:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "9725:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "9834:38:20", "value": { "arguments": [ { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "9854:6:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "9862:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "9850:3:20" }, "nodeType": "YulFunctionCall", "src": "9850:16:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "9868:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "9846:3:20" }, "nodeType": "YulFunctionCall", "src": "9846:26:20" }, "variables": [ { "name": "dest", "nodeType": "YulTypedName", "src": "9838:4:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "9892:4:20" }, { "arguments": [ { "arguments": [ { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "9911:4:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "9905:5:20" }, "nodeType": "YulFunctionCall", "src": "9905:11:20" }, { "arguments": [ { "name": "mask", "nodeType": "YulIdentifier", "src": "9922:4:20" } ], "functionName": { "name": "not", "nodeType": "YulIdentifier", "src": "9918:3:20" }, "nodeType": "YulFunctionCall", "src": "9918:9:20" } ], "functionName": { "name": "and", "nodeType": "YulIdentifier", "src": "9901:3:20" }, "nodeType": "YulFunctionCall", "src": "9901:27:20" }, { "name": "data", "nodeType": "YulIdentifier", "src": "9930:4:20" } ], "functionName": { "name": "or", "nodeType": "YulIdentifier", "src": "9898:2:20" }, "nodeType": "YulFunctionCall", "src": "9898:37:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "9885:6:20" }, "nodeType": "YulFunctionCall", "src": "9885:51:20" }, "nodeType": "YulExpressionStatement", "src": "9885:51:20" }, { "body": { "nodeType": "YulBlock", "src": "10039:61:20", "statements": [ { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "10064:6:20" }, { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "10076:3:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "10081:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "10072:3:20" }, "nodeType": "YulFunctionCall", "src": "10072:13:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "10057:6:20" }, "nodeType": "YulFunctionCall", "src": "10057:29:20" }, "nodeType": "YulExpressionStatement", "src": "10057:29:20" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "10013:3:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "10018:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "10009:3:20" }, "nodeType": "YulFunctionCall", "src": "10009:13:20" }, { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "10030:6:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "10024:5:20" }, "nodeType": "YulFunctionCall", "src": "10024:13:20" } ], "functionName": { "name": "gt", "nodeType": "YulIdentifier", "src": "10006:2:20" }, "nodeType": "YulFunctionCall", "src": "10006:32:20" }, "nodeType": "YulIf", "src": "10003:2:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6390, "isOffset": false, "isSlot": false, "src": "9741:3:20", "valueSize": 1 }, { "declaration": 6394, "isOffset": false, "isSlot": false, "src": "9930:4:20", "valueSize": 1 }, { "declaration": 6396, "isOffset": false, "isSlot": false, "src": "10018:3:20", "valueSize": 1 }, { "declaration": 6396, "isOffset": false, "isSlot": false, "src": "10081:3:20", "valueSize": 1 }, { "declaration": 6396, "isOffset": false, "isSlot": false, "src": "9868:3:20", "valueSize": 1 }, { "declaration": 6420, "isOffset": false, "isSlot": false, "src": "9922:4:20", "valueSize": 1 }, { "declaration": 6392, "isOffset": false, "isSlot": false, "src": "10013:3:20", "valueSize": 1 }, { "declaration": 6392, "isOffset": false, "isSlot": false, "src": "10076:3:20", "valueSize": 1 }, { "declaration": 6392, "isOffset": false, "isSlot": false, "src": "9862:3:20", "valueSize": 1 } ], "id": 6427, "nodeType": "InlineAssembly", "src": "9649:461:20" }, { "expression": { "id": 6428, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6390, "src": "10126:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6400, "id": 6429, "nodeType": "Return", "src": "10119:10:20" } ] }, "documentation": { "id": 6388, "nodeType": "StructuredDocumentation", "src": "9042:359:20", "text": " @dev Writes an integer to the buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param off The offset to write at.\n @param data The data to append.\n @param len The number of bytes to write (right-aligned).\n @return The original buffer, for chaining." }, "id": 6431, "implemented": true, "kind": "function", "modifiers": [], "name": "writeInt", "nodeType": "FunctionDefinition", "parameters": { "id": 6397, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6390, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9424:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6389, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "9424:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6392, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9443:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6391, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9443:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6394, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9453:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6393, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9453:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6396, "mutability": "mutable", "name": "len", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9464:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6395, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9464:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "9423:50:20" }, "returnParameters": { "id": 6400, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6399, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9495:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6398, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "9495:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "9494:15:20" }, "scope": 6432, "src": "9406:730:20", "stateMutability": "pure", "virtual": false, "visibility": "private" } ], "scope": 6433, "src": "403:9735:20" } ], "src": "0:10139:20" }, "legacyAST": { "absolutePath": "@ensdomains/buffer/contracts/Buffer.sol", "exportedSymbols": { "Buffer": [ 6432 ] }, "id": 6433, "nodeType": "SourceUnit", "nodes": [ { "id": 5968, "literals": [ "solidity", ">", "0.4", ".18" ], "nodeType": "PragmaDirective", "src": "0:24:20" }, { "abstract": false, "baseContracts": [], "contractDependencies": [], "contractKind": "library", "documentation": { "id": 5969, "nodeType": "StructuredDocumentation", "src": "26:376:20", "text": " @dev A library for working with mutable byte buffers in Solidity.\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." }, "fullyImplemented": true, "id": 6432, "linearizedBaseContracts": [ 6432 ], "name": "Buffer", "nodeType": "ContractDefinition", "nodes": [ { "canonicalName": "Buffer.buffer", "id": 5974, "members": [ { "constant": false, "id": 5971, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 5974, "src": "702:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" }, "typeName": { "id": 5970, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "702:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 5973, "mutability": "mutable", "name": "capacity", "nodeType": "VariableDeclaration", "scope": 5974, "src": "721:13:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5972, "name": "uint", "nodeType": "ElementaryTypeName", "src": "721:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "name": "buffer", "nodeType": "StructDefinition", "scope": 6432, "src": "678:63:20", "visibility": "public" }, { "body": { "id": 6009, "nodeType": "Block", "src": "1063:370:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5988, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5986, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 5984, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5979, "src": "1077:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "hexValue": "3332", "id": 5985, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1088:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "1077:13:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "!=", "rightExpression": { "hexValue": "30", "id": 5987, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1094:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_0_by_1", "typeString": "int_const 0" }, "value": "0" }, "src": "1077:18:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 5999, "nodeType": "IfStatement", "src": "1073:81:20", "trueBody": { "id": 5998, "nodeType": "Block", "src": "1097:57:20", "statements": [ { "expression": { "id": 5996, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 5989, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5979, "src": "1111:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5995, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "3332", "id": 5990, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1123:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 5993, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 5991, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5979, "src": "1129:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "%", "rightExpression": { "hexValue": "3332", "id": 5992, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "1140:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "1129:13:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 5994, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "1128:15:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1123:20:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1111:32:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 5997, "nodeType": "ExpressionStatement", "src": "1111:32:20" } ] } }, { "expression": { "id": 6004, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 6000, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5977, "src": "1209:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6002, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "1209:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 6003, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5979, "src": "1224:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1209:23:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6005, "nodeType": "ExpressionStatement", "src": "1209:23:20" }, { "AST": { "nodeType": "YulBlock", "src": "1251:156:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "1265:22:20", "value": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1282:4:20", "type": "", "value": "0x40" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "1276:5:20" }, "nodeType": "YulFunctionCall", "src": "1276:11:20" }, "variables": [ { "name": "ptr", "nodeType": "YulTypedName", "src": "1269:3:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "1307:3:20" }, { "name": "ptr", "nodeType": "YulIdentifier", "src": "1312:3:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "1300:6:20" }, "nodeType": "YulFunctionCall", "src": "1300:16:20" }, "nodeType": "YulExpressionStatement", "src": "1300:16:20" }, { "expression": { "arguments": [ { "name": "ptr", "nodeType": "YulIdentifier", "src": "1336:3:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "1341:1:20", "type": "", "value": "0" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "1329:6:20" }, "nodeType": "YulFunctionCall", "src": "1329:14:20" }, "nodeType": "YulExpressionStatement", "src": "1329:14:20" }, { "expression": { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1363:4:20", "type": "", "value": "0x40" }, { "arguments": [ { "kind": "number", "nodeType": "YulLiteral", "src": "1373:2:20", "type": "", "value": "32" }, { "arguments": [ { "name": "ptr", "nodeType": "YulIdentifier", "src": "1381:3:20" }, { "name": "capacity", "nodeType": "YulIdentifier", "src": "1386:8:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "1377:3:20" }, "nodeType": "YulFunctionCall", "src": "1377:18:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "1369:3:20" }, "nodeType": "YulFunctionCall", "src": "1369:27:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "1356:6:20" }, "nodeType": "YulFunctionCall", "src": "1356:41:20" }, "nodeType": "YulExpressionStatement", "src": "1356:41:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 5977, "isOffset": false, "isSlot": false, "src": "1307:3:20", "valueSize": 1 }, { "declaration": 5979, "isOffset": false, "isSlot": false, "src": "1386:8:20", "valueSize": 1 } ], "id": 6006, "nodeType": "InlineAssembly", "src": "1242:165:20" }, { "expression": { "id": 6007, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 5977, "src": "1423:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 5983, "id": 6008, "nodeType": "Return", "src": "1416:10:20" } ] }, "documentation": { "id": 5975, "nodeType": "StructuredDocumentation", "src": "747:226:20", "text": " @dev Initializes a buffer with an initial capacity.\n @param buf The buffer to initialize.\n @param capacity The number of bytes of space to allocate the buffer.\n @return The buffer, for chaining." }, "id": 6010, "implemented": true, "kind": "function", "modifiers": [], "name": "init", "nodeType": "FunctionDefinition", "parameters": { "id": 5980, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5977, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6010, "src": "992:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 5976, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "992:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 5979, "mutability": "mutable", "name": "capacity", "nodeType": "VariableDeclaration", "scope": 6010, "src": "1011:13:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 5978, "name": "uint", "nodeType": "ElementaryTypeName", "src": "1011:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "991:34:20" }, "returnParameters": { "id": 5983, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 5982, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6010, "src": "1048:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 5981, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "1048:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "1047:15:20" }, "scope": 6432, "src": "978:455:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6036, "nodeType": "Block", "src": "1748:108:20", "statements": [ { "assignments": [ 6019 ], "declarations": [ { "constant": false, "id": 6019, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6036, "src": "1758:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6018, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "1758:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "id": 6020, "nodeType": "VariableDeclarationStatement", "src": "1758:17:20" }, { "expression": { "id": 6025, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 6021, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6019, "src": "1785:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6023, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "1785:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "id": 6024, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6013, "src": "1795:1:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "src": "1785:11:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6026, "nodeType": "ExpressionStatement", "src": "1785:11:20" }, { "expression": { "id": 6032, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "expression": { "id": 6027, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6019, "src": "1806:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6029, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": true, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "1806:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "expression": { "id": 6030, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6013, "src": "1821:1:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6031, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "1821:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "1806:23:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6033, "nodeType": "ExpressionStatement", "src": "1806:23:20" }, { "expression": { "id": 6034, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6019, "src": "1846:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6017, "id": 6035, "nodeType": "Return", "src": "1839:10:20" } ] }, "documentation": { "id": 6011, "nodeType": "StructuredDocumentation", "src": "1439:232:20", "text": " @dev Initializes a new buffer from an existing bytes object.\n Changes to the buffer may mutate the original value.\n @param b The bytes object to initialize the buffer with.\n @return A new buffer." }, "id": 6037, "implemented": true, "kind": "function", "modifiers": [], "name": "fromBytes", "nodeType": "FunctionDefinition", "parameters": { "id": 6014, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6013, "mutability": "mutable", "name": "b", "nodeType": "VariableDeclaration", "scope": 6037, "src": "1695:14:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6012, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1695:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "1694:16:20" }, "returnParameters": { "id": 6017, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6016, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6037, "src": "1733:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6015, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "1733:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "1732:15:20" }, "scope": 6432, "src": "1676:180:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6059, "nodeType": "Block", "src": "1925:104:20", "statements": [ { "assignments": [ 6045 ], "declarations": [ { "constant": false, "id": 6045, "mutability": "mutable", "name": "oldbuf", "nodeType": "VariableDeclaration", "scope": 6059, "src": "1935:19:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6044, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "1935:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "id": 6048, "initialValue": { "expression": { "id": 6046, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6039, "src": "1957:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6047, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "1957:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "nodeType": "VariableDeclarationStatement", "src": "1935:29:20" }, { "expression": { "arguments": [ { "id": 6050, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6039, "src": "1979:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "id": 6051, "name": "capacity", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6041, "src": "1984:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6049, "name": "init", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6010, "src": "1974:4:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6052, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "1974:19:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6053, "nodeType": "ExpressionStatement", "src": "1974:19:20" }, { "expression": { "arguments": [ { "id": 6055, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6039, "src": "2010:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "id": 6056, "name": "oldbuf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6045, "src": "2015:6:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } ], "id": 6054, "name": "append", "nodeType": "Identifier", "overloadedDeclarations": [ 6195, 6216 ], "referencedDeclaration": 6216, "src": "2003:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_bytes_memory_ptr_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,bytes memory) pure returns (struct Buffer.buffer memory)" } }, "id": 6057, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2003:19:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6058, "nodeType": "ExpressionStatement", "src": "2003:19:20" } ] }, "id": 6060, "implemented": true, "kind": "function", "modifiers": [], "name": "resize", "nodeType": "FunctionDefinition", "parameters": { "id": 6042, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6039, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6060, "src": "1878:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6038, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "1878:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6041, "mutability": "mutable", "name": "capacity", "nodeType": "VariableDeclaration", "scope": 6060, "src": "1897:13:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6040, "name": "uint", "nodeType": "ElementaryTypeName", "src": "1897:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "1877:34:20" }, "returnParameters": { "id": 6043, "nodeType": "ParameterList", "parameters": [], "src": "1925:0:20" }, "scope": 6432, "src": "1862:167:20", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 6078, "nodeType": "Block", "src": "2091:78:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6071, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6069, "name": "a", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6062, "src": "2105:1:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "id": 6070, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6064, "src": "2109:1:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "2105:5:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6075, "nodeType": "IfStatement", "src": "2101:44:20", "trueBody": { "id": 6074, "nodeType": "Block", "src": "2112:33:20", "statements": [ { "expression": { "id": 6072, "name": "a", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6062, "src": "2133:1:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 6068, "id": 6073, "nodeType": "Return", "src": "2126:8:20" } ] } }, { "expression": { "id": 6076, "name": "b", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6064, "src": "2161:1:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "functionReturnParameters": 6068, "id": 6077, "nodeType": "Return", "src": "2154:8:20" } ] }, "id": 6079, "implemented": true, "kind": "function", "modifiers": [], "name": "max", "nodeType": "FunctionDefinition", "parameters": { "id": 6065, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6062, "mutability": "mutable", "name": "a", "nodeType": "VariableDeclaration", "scope": 6079, "src": "2048:6:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6061, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2048:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6064, "mutability": "mutable", "name": "b", "nodeType": "VariableDeclaration", "scope": 6079, "src": "2056:6:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6063, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2056:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2047:16:20" }, "returnParameters": { "id": 6068, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6067, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6079, "src": "2085:4:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6066, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2085:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2084:6:20" }, "scope": 6432, "src": "2035:134:20", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 6090, "nodeType": "Block", "src": "2392:123:20", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "2411:78:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "2425:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "2445:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "2439:5:20" }, "nodeType": "YulFunctionCall", "src": "2439:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "2429:6:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "2469:6:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "2477:1:20", "type": "", "value": "0" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "2462:6:20" }, "nodeType": "YulFunctionCall", "src": "2462:17:20" }, "nodeType": "YulExpressionStatement", "src": "2462:17:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6082, "isOffset": false, "isSlot": false, "src": "2445:3:20", "valueSize": 1 } ], "id": 6087, "nodeType": "InlineAssembly", "src": "2402:87:20" }, { "expression": { "id": 6088, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6082, "src": "2505:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6086, "id": 6089, "nodeType": "Return", "src": "2498:10:20" } ] }, "documentation": { "id": 6080, "nodeType": "StructuredDocumentation", "src": "2175:137:20", "text": " @dev Sets buffer length to 0.\n @param buf The buffer to truncate.\n @return The original buffer, for chaining.." }, "id": 6091, "implemented": true, "kind": "function", "modifiers": [], "name": "truncate", "nodeType": "FunctionDefinition", "parameters": { "id": 6083, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6082, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6091, "src": "2335:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6081, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "2335:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "2334:19:20" }, "returnParameters": { "id": 6086, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6085, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6091, "src": "2377:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6084, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "2377:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "2376:15:20" }, "scope": 6432, "src": "2317:198:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6172, "nodeType": "Block", "src": "2985:1216:20", "statements": [ { "expression": { "arguments": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6109, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6106, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3003:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "<=", "rightExpression": { "expression": { "id": 6107, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6098, "src": "3010:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6108, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "3010:11:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3003:18:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bool", "typeString": "bool" } ], "id": 6105, "name": "require", "nodeType": "Identifier", "overloadedDeclarations": [ -18, -18 ], "referencedDeclaration": -18, "src": "2995:7:20", "typeDescriptions": { "typeIdentifier": "t_function_require_pure$_t_bool_$returns$__$", "typeString": "function (bool) pure" } }, "id": 6110, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "2995:27:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6111, "nodeType": "ExpressionStatement", "src": "2995:27:20" }, { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6117, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6114, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6112, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6096, "src": "3037:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6113, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3043:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3037:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "expression": { "id": 6115, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "3049:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6116, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "3049:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3037:24:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6132, "nodeType": "IfStatement", "src": "3033:100:20", "trueBody": { "id": 6131, "nodeType": "Block", "src": "3063:70:20", "statements": [ { "expression": { "arguments": [ { "id": 6119, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "3084:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6128, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "arguments": [ { "expression": { "id": 6121, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "3093:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6122, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "3093:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6125, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6123, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3107:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6124, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6096, "src": "3113:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3107:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6120, "name": "max", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6079, "src": "3089:3:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_uint256_$_t_uint256_$returns$_t_uint256_$", "typeString": "function (uint256,uint256) pure returns (uint256)" } }, "id": 6126, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3089:28:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "hexValue": "32", "id": 6127, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3120:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "3089:32:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6118, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6060, "src": "3077:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 6129, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "3077:45:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6130, "nodeType": "ExpressionStatement", "src": "3077:45:20" } ] } }, { "assignments": [ 6134 ], "declarations": [ { "constant": false, "id": 6134, "mutability": "mutable", "name": "dest", "nodeType": "VariableDeclaration", "scope": 6172, "src": "3143:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6133, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3143:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6135, "nodeType": "VariableDeclarationStatement", "src": "3143:9:20" }, { "assignments": [ 6137 ], "declarations": [ { "constant": false, "id": 6137, "mutability": "mutable", "name": "src", "nodeType": "VariableDeclaration", "scope": 6172, "src": "3162:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6136, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3162:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6138, "nodeType": "VariableDeclarationStatement", "src": "3162:8:20" }, { "AST": { "nodeType": "YulBlock", "src": "3189:502:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "3252:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "3272:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "3266:5:20" }, "nodeType": "YulFunctionCall", "src": "3266:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "3256:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "3335:27:20", "value": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "3355:6:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "3349:5:20" }, "nodeType": "YulFunctionCall", "src": "3349:13:20" }, "variables": [ { "name": "buflen", "nodeType": "YulTypedName", "src": "3339:6:20", "type": "" } ] }, { "nodeType": "YulAssignment", "src": "3454:33:20", "value": { "arguments": [ { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "3470:6:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "3478:2:20", "type": "", "value": "32" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3466:3:20" }, "nodeType": "YulFunctionCall", "src": "3466:15:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "3483:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3462:3:20" }, "nodeType": "YulFunctionCall", "src": "3462:25:20" }, "variableNames": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "3454:4:20" } ] }, { "body": { "nodeType": "YulBlock", "src": "3587:61:20", "statements": [ { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "3612:6:20" }, { "arguments": [ { "name": "len", "nodeType": "YulIdentifier", "src": "3624:3:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "3629:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3620:3:20" }, "nodeType": "YulFunctionCall", "src": "3620:13:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "3605:6:20" }, "nodeType": "YulFunctionCall", "src": "3605:29:20" }, "nodeType": "YulExpressionStatement", "src": "3605:29:20" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "len", "nodeType": "YulIdentifier", "src": "3568:3:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "3573:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3564:3:20" }, "nodeType": "YulFunctionCall", "src": "3564:13:20" }, { "name": "buflen", "nodeType": "YulIdentifier", "src": "3579:6:20" } ], "functionName": { "name": "gt", "nodeType": "YulIdentifier", "src": "3561:2:20" }, "nodeType": "YulFunctionCall", "src": "3561:25:20" }, "nodeType": "YulIf", "src": "3558:2:20" }, { "nodeType": "YulAssignment", "src": "3661:20:20", "value": { "arguments": [ { "name": "data", "nodeType": "YulIdentifier", "src": "3672:4:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "3678:2:20", "type": "", "value": "32" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "3668:3:20" }, "nodeType": "YulFunctionCall", "src": "3668:13:20" }, "variableNames": [ { "name": "src", "nodeType": "YulIdentifier", "src": "3661:3:20" } ] } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6094, "isOffset": false, "isSlot": false, "src": "3272:3:20", "valueSize": 1 }, { "declaration": 6098, "isOffset": false, "isSlot": false, "src": "3672:4:20", "valueSize": 1 }, { "declaration": 6134, "isOffset": false, "isSlot": false, "src": "3454:4:20", "valueSize": 1 }, { "declaration": 6100, "isOffset": false, "isSlot": false, "src": "3568:3:20", "valueSize": 1 }, { "declaration": 6100, "isOffset": false, "isSlot": false, "src": "3624:3:20", "valueSize": 1 }, { "declaration": 6096, "isOffset": false, "isSlot": false, "src": "3483:3:20", "valueSize": 1 }, { "declaration": 6096, "isOffset": false, "isSlot": false, "src": "3573:3:20", "valueSize": 1 }, { "declaration": 6096, "isOffset": false, "isSlot": false, "src": "3629:3:20", "valueSize": 1 }, { "declaration": 6137, "isOffset": false, "isSlot": false, "src": "3661:3:20", "valueSize": 1 } ], "id": 6139, "nodeType": "InlineAssembly", "src": "3180:511:20" }, { "body": { "id": 6156, "nodeType": "Block", "src": "3780:136:20", "statements": [ { "AST": { "nodeType": "YulBlock", "src": "3803:56:20", "statements": [ { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "3828:4:20" }, { "arguments": [ { "name": "src", "nodeType": "YulIdentifier", "src": "3840:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "3834:5:20" }, "nodeType": "YulFunctionCall", "src": "3834:10:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "3821:6:20" }, "nodeType": "YulFunctionCall", "src": "3821:24:20" }, "nodeType": "YulExpressionStatement", "src": "3821:24:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6134, "isOffset": false, "isSlot": false, "src": "3828:4:20", "valueSize": 1 }, { "declaration": 6137, "isOffset": false, "isSlot": false, "src": "3840:3:20", "valueSize": 1 } ], "id": 6147, "nodeType": "InlineAssembly", "src": "3794:65:20" }, { "expression": { "id": 6150, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 6148, "name": "dest", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6134, "src": "3872:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "hexValue": "3332", "id": 6149, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3880:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3872:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6151, "nodeType": "ExpressionStatement", "src": "3872:10:20" }, { "expression": { "id": 6154, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 6152, "name": "src", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6137, "src": "3896:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "+=", "rightHandSide": { "hexValue": "3332", "id": 6153, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3903:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3896:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6155, "nodeType": "ExpressionStatement", "src": "3896:9:20" } ] }, "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6142, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6140, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3758:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "hexValue": "3332", "id": 6141, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3765:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3758:9:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6157, "loopExpression": { "expression": { "id": 6145, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 6143, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3769:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "Assignment", "operator": "-=", "rightHandSide": { "hexValue": "3332", "id": 6144, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3776:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "src": "3769:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "id": 6146, "nodeType": "ExpressionStatement", "src": "3769:9:20" }, "nodeType": "ForStatement", "src": "3751:165:20" }, { "assignments": [ 6159 ], "declarations": [ { "constant": false, "id": 6159, "mutability": "mutable", "name": "mask", "nodeType": "VariableDeclaration", "scope": 6172, "src": "3958:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6158, "name": "uint", "nodeType": "ElementaryTypeName", "src": "3958:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6168, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6167, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6165, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "323536", "id": 6160, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3970:3:20", "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6163, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "3332", "id": 6161, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3978:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "id": 6162, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6100, "src": "3983:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3978:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6164, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "3977:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "3970:17:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 6166, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "3990:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "3970:21:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "3958:33:20" }, { "AST": { "nodeType": "YulBlock", "src": "4010:164:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "4024:41:20", "value": { "arguments": [ { "arguments": [ { "name": "src", "nodeType": "YulIdentifier", "src": "4049:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "4043:5:20" }, "nodeType": "YulFunctionCall", "src": "4043:10:20" }, { "arguments": [ { "name": "mask", "nodeType": "YulIdentifier", "src": "4059:4:20" } ], "functionName": { "name": "not", "nodeType": "YulIdentifier", "src": "4055:3:20" }, "nodeType": "YulFunctionCall", "src": "4055:9:20" } ], "functionName": { "name": "and", "nodeType": "YulIdentifier", "src": "4039:3:20" }, "nodeType": "YulFunctionCall", "src": "4039:26:20" }, "variables": [ { "name": "srcpart", "nodeType": "YulTypedName", "src": "4028:7:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "4078:38:20", "value": { "arguments": [ { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "4104:4:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "4098:5:20" }, "nodeType": "YulFunctionCall", "src": "4098:11:20" }, { "name": "mask", "nodeType": "YulIdentifier", "src": "4111:4:20" } ], "functionName": { "name": "and", "nodeType": "YulIdentifier", "src": "4094:3:20" }, "nodeType": "YulFunctionCall", "src": "4094:22:20" }, "variables": [ { "name": "destpart", "nodeType": "YulTypedName", "src": "4082:8:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "4136:4:20" }, { "arguments": [ { "name": "destpart", "nodeType": "YulIdentifier", "src": "4145:8:20" }, { "name": "srcpart", "nodeType": "YulIdentifier", "src": "4155:7:20" } ], "functionName": { "name": "or", "nodeType": "YulIdentifier", "src": "4142:2:20" }, "nodeType": "YulFunctionCall", "src": "4142:21:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "4129:6:20" }, "nodeType": "YulFunctionCall", "src": "4129:35:20" }, "nodeType": "YulExpressionStatement", "src": "4129:35:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6134, "isOffset": false, "isSlot": false, "src": "4104:4:20", "valueSize": 1 }, { "declaration": 6134, "isOffset": false, "isSlot": false, "src": "4136:4:20", "valueSize": 1 }, { "declaration": 6159, "isOffset": false, "isSlot": false, "src": "4059:4:20", "valueSize": 1 }, { "declaration": 6159, "isOffset": false, "isSlot": false, "src": "4111:4:20", "valueSize": 1 }, { "declaration": 6137, "isOffset": false, "isSlot": false, "src": "4049:3:20", "valueSize": 1 } ], "id": 6169, "nodeType": "InlineAssembly", "src": "4001:173:20" }, { "expression": { "id": 6170, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6094, "src": "4191:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6104, "id": 6171, "nodeType": "Return", "src": "4184:10:20" } ] }, "documentation": { "id": 6092, "nodeType": "StructuredDocumentation", "src": "2521:349:20", "text": " @dev Writes a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param off The start offset to write to.\n @param data The data to append.\n @param len The number of bytes to copy.\n @return The original buffer, for chaining." }, "id": 6173, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 6101, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6094, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2890:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6093, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "2890:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6096, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2909:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6095, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2909:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6098, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2919:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6097, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "2919:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 6100, "mutability": "mutable", "name": "len", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2938:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6099, "name": "uint", "nodeType": "ElementaryTypeName", "src": "2938:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "2889:58:20" }, "returnParameters": { "id": 6104, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6103, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6173, "src": "2970:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6102, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "2970:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "2969:15:20" }, "scope": 6432, "src": "2875:1326:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6194, "nodeType": "Block", "src": "4617:61:20", "statements": [ { "expression": { "arguments": [ { "id": 6186, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6176, "src": "4640:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6187, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6176, "src": "4645:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6188, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "4645:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6189, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "4645:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 6190, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6178, "src": "4661:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "id": 6191, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6180, "src": "4667:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6185, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6173, "src": "4634:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6192, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "4634:37:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6184, "id": 6193, "nodeType": "Return", "src": "4627:44:20" } ] }, "documentation": { "id": 6174, "nodeType": "StructuredDocumentation", "src": "4207:303:20", "text": " @dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @param len The number of bytes to copy.\n @return The original buffer, for chaining." }, "id": 6195, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 6181, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6176, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6195, "src": "4531:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6175, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "4531:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6178, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6195, "src": "4550:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6177, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4550:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" }, { "constant": false, "id": 6180, "mutability": "mutable", "name": "len", "nodeType": "VariableDeclaration", "scope": 6195, "src": "4569:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6179, "name": "uint", "nodeType": "ElementaryTypeName", "src": "4569:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "4530:48:20" }, "returnParameters": { "id": 6184, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6183, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6195, "src": "4602:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6182, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "4602:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "4601:15:20" }, "scope": 6432, "src": "4515:163:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6215, "nodeType": "Block", "src": "5038:69:20", "statements": [ { "expression": { "arguments": [ { "id": 6206, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6198, "src": "5061:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6207, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6198, "src": "5066:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6208, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "5066:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6209, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "5066:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 6210, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6200, "src": "5082:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, { "expression": { "id": 6211, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6200, "src": "5088:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6212, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "5088:11:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6205, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6173, "src": "5055:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes_memory_ptr_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes memory,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6213, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5055:45:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6204, "id": 6214, "nodeType": "Return", "src": "5048:52:20" } ] }, "documentation": { "id": 6196, "nodeType": "StructuredDocumentation", "src": "4684:257:20", "text": " @dev Appends a byte string to a buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6216, "implemented": true, "kind": "function", "modifiers": [], "name": "append", "nodeType": "FunctionDefinition", "parameters": { "id": 6201, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6198, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6216, "src": "4962:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6197, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "4962:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6200, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6216, "src": "4981:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes" }, "typeName": { "id": 6199, "name": "bytes", "nodeType": "ElementaryTypeName", "src": "4981:5:20", "typeDescriptions": { "typeIdentifier": "t_bytes_storage_ptr", "typeString": "bytes" } }, "visibility": "internal" } ], "src": "4961:38:20" }, "returnParameters": { "id": 6204, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6203, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6216, "src": "5023:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6202, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "5023:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "5022:15:20" }, "scope": 6432, "src": "4946:161:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6245, "nodeType": "Block", "src": "5517:617:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6231, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6228, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6221, "src": "5531:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">=", "rightExpression": { "expression": { "id": 6229, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6219, "src": "5538:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6230, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "5538:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "5531:19:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6241, "nodeType": "IfStatement", "src": "5527:79:20", "trueBody": { "id": 6240, "nodeType": "Block", "src": "5552:54:20", "statements": [ { "expression": { "arguments": [ { "id": 6233, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6219, "src": "5573:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6237, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "expression": { "id": 6234, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6219, "src": "5578:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6235, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "5578:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "hexValue": "32", "id": 6236, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "5593:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "5578:16:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6232, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6060, "src": "5566:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 6238, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "5566:29:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6239, "nodeType": "ExpressionStatement", "src": "5566:29:20" } ] } }, { "AST": { "nodeType": "YulBlock", "src": "5625:483:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "5688:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "5708:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "5702:5:20" }, "nodeType": "YulFunctionCall", "src": "5702:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "5692:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "5771:27:20", "value": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "5791:6:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "5785:5:20" }, "nodeType": "YulFunctionCall", "src": "5785:13:20" }, "variables": [ { "name": "buflen", "nodeType": "YulTypedName", "src": "5775:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "5881:37:20", "value": { "arguments": [ { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "5901:6:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "5909:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "5897:3:20" }, "nodeType": "YulFunctionCall", "src": "5897:16:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "5915:2:20", "type": "", "value": "32" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "5893:3:20" }, "nodeType": "YulFunctionCall", "src": "5893:25:20" }, "variables": [ { "name": "dest", "nodeType": "YulTypedName", "src": "5885:4:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "5939:4:20" }, { "name": "data", "nodeType": "YulIdentifier", "src": "5945:4:20" } ], "functionName": { "name": "mstore8", "nodeType": "YulIdentifier", "src": "5931:7:20" }, "nodeType": "YulFunctionCall", "src": "5931:19:20" }, "nodeType": "YulExpressionStatement", "src": "5931:19:20" }, { "body": { "nodeType": "YulBlock", "src": "6036:62:20", "statements": [ { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "6061:6:20" }, { "arguments": [ { "name": "buflen", "nodeType": "YulIdentifier", "src": "6073:6:20" }, { "kind": "number", "nodeType": "YulLiteral", "src": "6081:1:20", "type": "", "value": "1" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "6069:3:20" }, "nodeType": "YulFunctionCall", "src": "6069:14:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "6054:6:20" }, "nodeType": "YulFunctionCall", "src": "6054:30:20" }, "nodeType": "YulExpressionStatement", "src": "6054:30:20" } ] }, "condition": { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "6023:3:20" }, { "name": "buflen", "nodeType": "YulIdentifier", "src": "6028:6:20" } ], "functionName": { "name": "eq", "nodeType": "YulIdentifier", "src": "6020:2:20" }, "nodeType": "YulFunctionCall", "src": "6020:15:20" }, "nodeType": "YulIf", "src": "6017:2:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6219, "isOffset": false, "isSlot": false, "src": "5708:3:20", "valueSize": 1 }, { "declaration": 6223, "isOffset": false, "isSlot": false, "src": "5945:4:20", "valueSize": 1 }, { "declaration": 6221, "isOffset": false, "isSlot": false, "src": "5909:3:20", "valueSize": 1 }, { "declaration": 6221, "isOffset": false, "isSlot": false, "src": "6023:3:20", "valueSize": 1 } ], "id": 6242, "nodeType": "InlineAssembly", "src": "5616:492:20" }, { "expression": { "id": 6243, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6219, "src": "6124:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6227, "id": 6244, "nodeType": "Return", "src": "6117:10:20" } ] }, "documentation": { "id": 6217, "nodeType": "StructuredDocumentation", "src": "5113:301:20", "text": " @dev Writes a byte to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n @param buf The buffer to append to.\n @param off The offset to write the byte at.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6246, "implemented": true, "kind": "function", "modifiers": [], "name": "writeUint8", "nodeType": "FunctionDefinition", "parameters": { "id": 6224, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6219, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6246, "src": "5439:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6218, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "5439:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6221, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6246, "src": "5458:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6220, "name": "uint", "nodeType": "ElementaryTypeName", "src": "5458:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6223, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6246, "src": "5468:10:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 6222, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "5468:5:20", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "src": "5438:41:20" }, "returnParameters": { "id": 6227, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6226, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6246, "src": "5502:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6225, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "5502:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "5501:15:20" }, "scope": 6432, "src": "5419:715:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6264, "nodeType": "Block", "src": "6486:61:20", "statements": [ { "expression": { "arguments": [ { "id": 6257, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6249, "src": "6514:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6258, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6249, "src": "6519:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6259, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "6519:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6260, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "6519:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 6261, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6251, "src": "6535:4:20", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_uint8", "typeString": "uint8" } ], "id": 6256, "name": "writeUint8", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6246, "src": "6503:10:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_uint8_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,uint8) pure returns (struct Buffer.buffer memory)" } }, "id": 6262, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "6503:37:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6255, "id": 6263, "nodeType": "Return", "src": "6496:44:20" } ] }, "documentation": { "id": 6247, "nodeType": "StructuredDocumentation", "src": "6140:252:20", "text": " @dev Appends a byte to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6265, "implemented": true, "kind": "function", "modifiers": [], "name": "appendUint8", "nodeType": "FunctionDefinition", "parameters": { "id": 6252, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6249, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6265, "src": "6418:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6248, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "6418:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6251, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6265, "src": "6437:10:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" }, "typeName": { "id": 6250, "name": "uint8", "nodeType": "ElementaryTypeName", "src": "6437:5:20", "typeDescriptions": { "typeIdentifier": "t_uint8", "typeString": "uint8" } }, "visibility": "internal" } ], "src": "6417:31:20" }, "returnParameters": { "id": 6255, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6254, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6265, "src": "6471:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6253, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "6471:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "6470:15:20" }, "scope": 6432, "src": "6397:150:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6320, "nodeType": "Block", "src": "7024:695:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6284, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6281, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6279, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6274, "src": "7038:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6280, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6270, "src": "7044:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7038:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "expression": { "id": 6282, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6268, "src": "7050:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6283, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "7050:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7038:24:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6296, "nodeType": "IfStatement", "src": "7034:83:20", "trueBody": { "id": 6295, "nodeType": "Block", "src": "7064:53:20", "statements": [ { "expression": { "arguments": [ { "id": 6286, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6268, "src": "7085:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6292, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6289, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6287, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6274, "src": "7091:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6288, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6270, "src": "7097:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7091:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6290, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7090:11:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "hexValue": "32", "id": 6291, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7104:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "7090:15:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6285, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6060, "src": "7078:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 6293, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "7078:28:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6294, "nodeType": "ExpressionStatement", "src": "7078:28:20" } ] } }, { "assignments": [ 6298 ], "declarations": [ { "constant": false, "id": 6298, "mutability": "mutable", "name": "mask", "nodeType": "VariableDeclaration", "scope": 6320, "src": "7127:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6297, "name": "uint", "nodeType": "ElementaryTypeName", "src": "7127:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6304, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6303, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6301, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "323536", "id": 6299, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7139:3:20", "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "id": 6300, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6274, "src": "7146:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7139:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 6302, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7152:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "7139:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "7127:26:20" }, { "expression": { "id": 6315, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftHandSide": { "id": 6305, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6272, "src": "7191:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "Assignment", "operator": "=", "rightHandSide": { "commonType": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "id": 6314, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6306, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6272, "src": "7198:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "nodeType": "BinaryOperation", "operator": ">>", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6312, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "38", "id": 6307, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7207:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_8_by_1", "typeString": "int_const 8" }, "value": "8" }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6310, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "3332", "id": 6308, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "7212:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "id": 6309, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6274, "src": "7217:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7212:8:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6311, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7211:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7207:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6313, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "7206:16:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "7198:24:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "src": "7191:31:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "id": 6316, "nodeType": "ExpressionStatement", "src": "7191:31:20" }, { "AST": { "nodeType": "YulBlock", "src": "7241:452:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "7304:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "7324:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "7318:5:20" }, "nodeType": "YulFunctionCall", "src": "7318:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "7308:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "7417:38:20", "value": { "arguments": [ { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "7437:6:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "7445:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "7433:3:20" }, "nodeType": "YulFunctionCall", "src": "7433:16:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "7451:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "7429:3:20" }, "nodeType": "YulFunctionCall", "src": "7429:26:20" }, "variables": [ { "name": "dest", "nodeType": "YulTypedName", "src": "7421:4:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "7475:4:20" }, { "arguments": [ { "arguments": [ { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "7494:4:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "7488:5:20" }, "nodeType": "YulFunctionCall", "src": "7488:11:20" }, { "arguments": [ { "name": "mask", "nodeType": "YulIdentifier", "src": "7505:4:20" } ], "functionName": { "name": "not", "nodeType": "YulIdentifier", "src": "7501:3:20" }, "nodeType": "YulFunctionCall", "src": "7501:9:20" } ], "functionName": { "name": "and", "nodeType": "YulIdentifier", "src": "7484:3:20" }, "nodeType": "YulFunctionCall", "src": "7484:27:20" }, { "name": "data", "nodeType": "YulIdentifier", "src": "7513:4:20" } ], "functionName": { "name": "or", "nodeType": "YulIdentifier", "src": "7481:2:20" }, "nodeType": "YulFunctionCall", "src": "7481:37:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "7468:6:20" }, "nodeType": "YulFunctionCall", "src": "7468:51:20" }, "nodeType": "YulExpressionStatement", "src": "7468:51:20" }, { "body": { "nodeType": "YulBlock", "src": "7622:61:20", "statements": [ { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "7647:6:20" }, { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "7659:3:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "7664:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "7655:3:20" }, "nodeType": "YulFunctionCall", "src": "7655:13:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "7640:6:20" }, "nodeType": "YulFunctionCall", "src": "7640:29:20" }, "nodeType": "YulExpressionStatement", "src": "7640:29:20" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "7596:3:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "7601:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "7592:3:20" }, "nodeType": "YulFunctionCall", "src": "7592:13:20" }, { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "7613:6:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "7607:5:20" }, "nodeType": "YulFunctionCall", "src": "7607:13:20" } ], "functionName": { "name": "gt", "nodeType": "YulIdentifier", "src": "7589:2:20" }, "nodeType": "YulFunctionCall", "src": "7589:32:20" }, "nodeType": "YulIf", "src": "7586:2:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6268, "isOffset": false, "isSlot": false, "src": "7324:3:20", "valueSize": 1 }, { "declaration": 6272, "isOffset": false, "isSlot": false, "src": "7513:4:20", "valueSize": 1 }, { "declaration": 6274, "isOffset": false, "isSlot": false, "src": "7451:3:20", "valueSize": 1 }, { "declaration": 6274, "isOffset": false, "isSlot": false, "src": "7601:3:20", "valueSize": 1 }, { "declaration": 6274, "isOffset": false, "isSlot": false, "src": "7664:3:20", "valueSize": 1 }, { "declaration": 6298, "isOffset": false, "isSlot": false, "src": "7505:4:20", "valueSize": 1 }, { "declaration": 6270, "isOffset": false, "isSlot": false, "src": "7445:3:20", "valueSize": 1 }, { "declaration": 6270, "isOffset": false, "isSlot": false, "src": "7596:3:20", "valueSize": 1 }, { "declaration": 6270, "isOffset": false, "isSlot": false, "src": "7659:3:20", "valueSize": 1 } ], "id": 6317, "nodeType": "InlineAssembly", "src": "7232:461:20" }, { "expression": { "id": 6318, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6268, "src": "7709:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6278, "id": 6319, "nodeType": "Return", "src": "7702:10:20" } ] }, "documentation": { "id": 6266, "nodeType": "StructuredDocumentation", "src": "6553:362:20", "text": " @dev Writes up to 32 bytes to the buffer. Resizes if doing so would\n exceed the capacity of the buffer.\n @param buf The buffer to append to.\n @param off The offset to write at.\n @param data The data to append.\n @param len The number of bytes to write (left-aligned).\n @return The original buffer, for chaining." }, "id": 6321, "implemented": true, "kind": "function", "modifiers": [], "name": "write", "nodeType": "FunctionDefinition", "parameters": { "id": 6275, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6268, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6321, "src": "6935:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6267, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "6935:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6270, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6321, "src": "6954:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6269, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6954:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6272, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6321, "src": "6964:12:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 6271, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "6964:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" }, { "constant": false, "id": 6274, "mutability": "mutable", "name": "len", "nodeType": "VariableDeclaration", "scope": 6321, "src": "6978:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6273, "name": "uint", "nodeType": "ElementaryTypeName", "src": "6978:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "6934:53:20" }, "returnParameters": { "id": 6278, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6277, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6321, "src": "7009:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6276, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "7009:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "7008:15:20" }, "scope": 6432, "src": "6920:799:20", "stateMutability": "pure", "virtual": false, "visibility": "private" }, { "body": { "id": 6343, "nodeType": "Block", "src": "8128:58:20", "statements": [ { "expression": { "arguments": [ { "id": 6334, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6324, "src": "8151:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "id": 6335, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6326, "src": "8156:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "id": 6338, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6328, "src": "8169:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 6337, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8161:7:20", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": { "id": 6336, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8161:7:20", "typeDescriptions": {} } }, "id": 6339, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8161:13:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "hexValue": "3230", "id": 6340, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8176:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 6333, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6321, "src": "8145:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6341, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8145:34:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6332, "id": 6342, "nodeType": "Return", "src": "8138:41:20" } ] }, "documentation": { "id": 6322, "nodeType": "StructuredDocumentation", "src": "7725:295:20", "text": " @dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the\n capacity of the buffer.\n @param buf The buffer to append to.\n @param off The offset to write at.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6344, "implemented": true, "kind": "function", "modifiers": [], "name": "writeBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 6329, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6324, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6344, "src": "8047:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6323, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8047:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6326, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6344, "src": "8066:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6325, "name": "uint", "nodeType": "ElementaryTypeName", "src": "8066:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6328, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6344, "src": "8076:12:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 6327, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8076:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "visibility": "internal" } ], "src": "8046:43:20" }, "returnParameters": { "id": 6332, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6331, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6344, "src": "8113:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6330, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8113:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "8112:15:20" }, "scope": 6432, "src": "8025:161:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6366, "nodeType": "Block", "src": "8547:69:20", "statements": [ { "expression": { "arguments": [ { "id": 6355, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6347, "src": "8570:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6356, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6347, "src": "8575:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6357, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "8575:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6358, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "8575:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "arguments": [ { "id": 6361, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6349, "src": "8599:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } ], "id": 6360, "isConstant": false, "isLValue": false, "isPure": true, "lValueRequested": false, "nodeType": "ElementaryTypeNameExpression", "src": "8591:7:20", "typeDescriptions": { "typeIdentifier": "t_type$_t_bytes32_$", "typeString": "type(bytes32)" }, "typeName": { "id": 6359, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8591:7:20", "typeDescriptions": {} } }, "id": 6362, "isConstant": false, "isLValue": false, "isPure": false, "kind": "typeConversion", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8591:13:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "hexValue": "3230", "id": 6363, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "8606:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" }, "value": "20" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_20_by_1", "typeString": "int_const 20" } ], "id": 6354, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6321, "src": "8564:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6364, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8564:45:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6353, "id": 6365, "nodeType": "Return", "src": "8557:52:20" } ] }, "documentation": { "id": 6345, "nodeType": "StructuredDocumentation", "src": "8192:256:20", "text": " @dev Appends a bytes20 to the buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @return The original buffer, for chhaining." }, "id": 6367, "implemented": true, "kind": "function", "modifiers": [], "name": "appendBytes20", "nodeType": "FunctionDefinition", "parameters": { "id": 6350, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6347, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6367, "src": "8476:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6346, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8476:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6349, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6367, "src": "8495:12:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" }, "typeName": { "id": 6348, "name": "bytes20", "nodeType": "ElementaryTypeName", "src": "8495:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes20", "typeString": "bytes20" } }, "visibility": "internal" } ], "src": "8475:33:20" }, "returnParameters": { "id": 6353, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6352, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6367, "src": "8532:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6351, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8532:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "8531:15:20" }, "scope": 6432, "src": "8453:163:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6386, "nodeType": "Block", "src": "8976:60:20", "statements": [ { "expression": { "arguments": [ { "id": 6378, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6370, "src": "8999:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "expression": { "expression": { "id": 6379, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6370, "src": "9004:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6380, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "buf", "nodeType": "MemberAccess", "referencedDeclaration": 5971, "src": "9004:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes_memory_ptr", "typeString": "bytes memory" } }, "id": 6381, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "memberName": "length", "nodeType": "MemberAccess", "src": "9004:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, { "id": 6382, "name": "data", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6372, "src": "9020:4:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, { "hexValue": "3332", "id": 6383, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9026:2:20", "typeDescriptions": { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" }, "value": "32" } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" }, { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, { "typeIdentifier": "t_rational_32_by_1", "typeString": "int_const 32" } ], "id": 6377, "name": "write", "nodeType": "Identifier", "overloadedDeclarations": [ 6173, 6321 ], "referencedDeclaration": 6321, "src": "8993:5:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$_t_bytes32_$_t_uint256_$returns$_t_struct$_buffer_$5974_memory_ptr_$", "typeString": "function (struct Buffer.buffer memory,uint256,bytes32,uint256) pure returns (struct Buffer.buffer memory)" } }, "id": 6384, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "8993:36:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6376, "id": 6385, "nodeType": "Return", "src": "8986:43:20" } ] }, "documentation": { "id": 6368, "nodeType": "StructuredDocumentation", "src": "8622:255:20", "text": " @dev Appends a bytes32 to the buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param data The data to append.\n @return The original buffer, for chaining." }, "id": 6387, "implemented": true, "kind": "function", "modifiers": [], "name": "appendBytes32", "nodeType": "FunctionDefinition", "parameters": { "id": 6373, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6370, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6387, "src": "8905:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6369, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8905:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6372, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6387, "src": "8924:12:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" }, "typeName": { "id": 6371, "name": "bytes32", "nodeType": "ElementaryTypeName", "src": "8924:7:20", "typeDescriptions": { "typeIdentifier": "t_bytes32", "typeString": "bytes32" } }, "visibility": "internal" } ], "src": "8904:33:20" }, "returnParameters": { "id": 6376, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6375, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6387, "src": "8961:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6374, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "8961:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "8960:15:20" }, "scope": 6432, "src": "8882:154:20", "stateMutability": "pure", "virtual": false, "visibility": "internal" }, { "body": { "id": 6430, "nodeType": "Block", "src": "9510:626:20", "statements": [ { "condition": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6406, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6403, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6401, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6396, "src": "9524:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6402, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6392, "src": "9530:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9524:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": ">", "rightExpression": { "expression": { "id": 6404, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6390, "src": "9536:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "id": 6405, "isConstant": false, "isLValue": true, "isPure": false, "lValueRequested": false, "memberName": "capacity", "nodeType": "MemberAccess", "referencedDeclaration": 5973, "src": "9536:12:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9524:24:20", "typeDescriptions": { "typeIdentifier": "t_bool", "typeString": "bool" } }, "id": 6418, "nodeType": "IfStatement", "src": "9520:83:20", "trueBody": { "id": 6417, "nodeType": "Block", "src": "9550:53:20", "statements": [ { "expression": { "arguments": [ { "id": 6408, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6390, "src": "9571:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6414, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "components": [ { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6411, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "id": 6409, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6396, "src": "9577:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "+", "rightExpression": { "id": 6410, "name": "off", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6392, "src": "9583:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9577:9:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "id": 6412, "isConstant": false, "isInlineArray": false, "isLValue": false, "isPure": false, "lValueRequested": false, "nodeType": "TupleExpression", "src": "9576:11:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "*", "rightExpression": { "hexValue": "32", "id": 6413, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9590:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_2_by_1", "typeString": "int_const 2" }, "value": "2" }, "src": "9576:15:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } } ], "expression": { "argumentTypes": [ { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" }, { "typeIdentifier": "t_uint256", "typeString": "uint256" } ], "id": 6407, "name": "resize", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6060, "src": "9564:6:20", "typeDescriptions": { "typeIdentifier": "t_function_internal_pure$_t_struct$_buffer_$5974_memory_ptr_$_t_uint256_$returns$__$", "typeString": "function (struct Buffer.buffer memory,uint256) pure" } }, "id": 6415, "isConstant": false, "isLValue": false, "isPure": false, "kind": "functionCall", "lValueRequested": false, "names": [], "nodeType": "FunctionCall", "src": "9564:28:20", "tryCall": false, "typeDescriptions": { "typeIdentifier": "t_tuple$__$", "typeString": "tuple()" } }, "id": 6416, "nodeType": "ExpressionStatement", "src": "9564:28:20" } ] } }, { "assignments": [ 6420 ], "declarations": [ { "constant": false, "id": 6420, "mutability": "mutable", "name": "mask", "nodeType": "VariableDeclaration", "scope": 6430, "src": "9613:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6419, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9613:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "id": 6426, "initialValue": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6425, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "commonType": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "id": 6423, "isConstant": false, "isLValue": false, "isPure": false, "lValueRequested": false, "leftExpression": { "hexValue": "323536", "id": 6421, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9625:3:20", "typeDescriptions": { "typeIdentifier": "t_rational_256_by_1", "typeString": "int_const 256" }, "value": "256" }, "nodeType": "BinaryOperation", "operator": "**", "rightExpression": { "id": 6422, "name": "len", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6396, "src": "9632:3:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "src": "9625:10:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "BinaryOperation", "operator": "-", "rightExpression": { "hexValue": "31", "id": 6424, "isConstant": false, "isLValue": false, "isPure": true, "kind": "number", "lValueRequested": false, "nodeType": "Literal", "src": "9638:1:20", "typeDescriptions": { "typeIdentifier": "t_rational_1_by_1", "typeString": "int_const 1" }, "value": "1" }, "src": "9625:14:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "nodeType": "VariableDeclarationStatement", "src": "9613:26:20" }, { "AST": { "nodeType": "YulBlock", "src": "9658:452:20", "statements": [ { "nodeType": "YulVariableDeclaration", "src": "9721:24:20", "value": { "arguments": [ { "name": "buf", "nodeType": "YulIdentifier", "src": "9741:3:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "9735:5:20" }, "nodeType": "YulFunctionCall", "src": "9735:10:20" }, "variables": [ { "name": "bufptr", "nodeType": "YulTypedName", "src": "9725:6:20", "type": "" } ] }, { "nodeType": "YulVariableDeclaration", "src": "9834:38:20", "value": { "arguments": [ { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "9854:6:20" }, { "name": "off", "nodeType": "YulIdentifier", "src": "9862:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "9850:3:20" }, "nodeType": "YulFunctionCall", "src": "9850:16:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "9868:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "9846:3:20" }, "nodeType": "YulFunctionCall", "src": "9846:26:20" }, "variables": [ { "name": "dest", "nodeType": "YulTypedName", "src": "9838:4:20", "type": "" } ] }, { "expression": { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "9892:4:20" }, { "arguments": [ { "arguments": [ { "arguments": [ { "name": "dest", "nodeType": "YulIdentifier", "src": "9911:4:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "9905:5:20" }, "nodeType": "YulFunctionCall", "src": "9905:11:20" }, { "arguments": [ { "name": "mask", "nodeType": "YulIdentifier", "src": "9922:4:20" } ], "functionName": { "name": "not", "nodeType": "YulIdentifier", "src": "9918:3:20" }, "nodeType": "YulFunctionCall", "src": "9918:9:20" } ], "functionName": { "name": "and", "nodeType": "YulIdentifier", "src": "9901:3:20" }, "nodeType": "YulFunctionCall", "src": "9901:27:20" }, { "name": "data", "nodeType": "YulIdentifier", "src": "9930:4:20" } ], "functionName": { "name": "or", "nodeType": "YulIdentifier", "src": "9898:2:20" }, "nodeType": "YulFunctionCall", "src": "9898:37:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "9885:6:20" }, "nodeType": "YulFunctionCall", "src": "9885:51:20" }, "nodeType": "YulExpressionStatement", "src": "9885:51:20" }, { "body": { "nodeType": "YulBlock", "src": "10039:61:20", "statements": [ { "expression": { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "10064:6:20" }, { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "10076:3:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "10081:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "10072:3:20" }, "nodeType": "YulFunctionCall", "src": "10072:13:20" } ], "functionName": { "name": "mstore", "nodeType": "YulIdentifier", "src": "10057:6:20" }, "nodeType": "YulFunctionCall", "src": "10057:29:20" }, "nodeType": "YulExpressionStatement", "src": "10057:29:20" } ] }, "condition": { "arguments": [ { "arguments": [ { "name": "off", "nodeType": "YulIdentifier", "src": "10013:3:20" }, { "name": "len", "nodeType": "YulIdentifier", "src": "10018:3:20" } ], "functionName": { "name": "add", "nodeType": "YulIdentifier", "src": "10009:3:20" }, "nodeType": "YulFunctionCall", "src": "10009:13:20" }, { "arguments": [ { "name": "bufptr", "nodeType": "YulIdentifier", "src": "10030:6:20" } ], "functionName": { "name": "mload", "nodeType": "YulIdentifier", "src": "10024:5:20" }, "nodeType": "YulFunctionCall", "src": "10024:13:20" } ], "functionName": { "name": "gt", "nodeType": "YulIdentifier", "src": "10006:2:20" }, "nodeType": "YulFunctionCall", "src": "10006:32:20" }, "nodeType": "YulIf", "src": "10003:2:20" } ] }, "evmVersion": "istanbul", "externalReferences": [ { "declaration": 6390, "isOffset": false, "isSlot": false, "src": "9741:3:20", "valueSize": 1 }, { "declaration": 6394, "isOffset": false, "isSlot": false, "src": "9930:4:20", "valueSize": 1 }, { "declaration": 6396, "isOffset": false, "isSlot": false, "src": "10018:3:20", "valueSize": 1 }, { "declaration": 6396, "isOffset": false, "isSlot": false, "src": "10081:3:20", "valueSize": 1 }, { "declaration": 6396, "isOffset": false, "isSlot": false, "src": "9868:3:20", "valueSize": 1 }, { "declaration": 6420, "isOffset": false, "isSlot": false, "src": "9922:4:20", "valueSize": 1 }, { "declaration": 6392, "isOffset": false, "isSlot": false, "src": "10013:3:20", "valueSize": 1 }, { "declaration": 6392, "isOffset": false, "isSlot": false, "src": "10076:3:20", "valueSize": 1 }, { "declaration": 6392, "isOffset": false, "isSlot": false, "src": "9862:3:20", "valueSize": 1 } ], "id": 6427, "nodeType": "InlineAssembly", "src": "9649:461:20" }, { "expression": { "id": 6428, "name": "buf", "nodeType": "Identifier", "overloadedDeclarations": [], "referencedDeclaration": 6390, "src": "10126:3:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer memory" } }, "functionReturnParameters": 6400, "id": 6429, "nodeType": "Return", "src": "10119:10:20" } ] }, "documentation": { "id": 6388, "nodeType": "StructuredDocumentation", "src": "9042:359:20", "text": " @dev Writes an integer to the buffer. Resizes if doing so would exceed\n the capacity of the buffer.\n @param buf The buffer to append to.\n @param off The offset to write at.\n @param data The data to append.\n @param len The number of bytes to write (right-aligned).\n @return The original buffer, for chaining." }, "id": 6431, "implemented": true, "kind": "function", "modifiers": [], "name": "writeInt", "nodeType": "FunctionDefinition", "parameters": { "id": 6397, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6390, "mutability": "mutable", "name": "buf", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9424:17:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6389, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "9424:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" }, { "constant": false, "id": 6392, "mutability": "mutable", "name": "off", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9443:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6391, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9443:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6394, "mutability": "mutable", "name": "data", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9453:9:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6393, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9453:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" }, { "constant": false, "id": 6396, "mutability": "mutable", "name": "len", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9464:8:20", "stateVariable": false, "storageLocation": "default", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" }, "typeName": { "id": 6395, "name": "uint", "nodeType": "ElementaryTypeName", "src": "9464:4:20", "typeDescriptions": { "typeIdentifier": "t_uint256", "typeString": "uint256" } }, "visibility": "internal" } ], "src": "9423:50:20" }, "returnParameters": { "id": 6400, "nodeType": "ParameterList", "parameters": [ { "constant": false, "id": 6399, "mutability": "mutable", "name": "", "nodeType": "VariableDeclaration", "scope": 6431, "src": "9495:13:20", "stateVariable": false, "storageLocation": "memory", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_memory_ptr", "typeString": "struct Buffer.buffer" }, "typeName": { "id": 6398, "name": "buffer", "nodeType": "UserDefinedTypeName", "referencedDeclaration": 5974, "src": "9495:6:20", "typeDescriptions": { "typeIdentifier": "t_struct$_buffer_$5974_storage_ptr", "typeString": "struct Buffer.buffer" } }, "visibility": "internal" } ], "src": "9494:15:20" }, "scope": 6432, "src": "9406:730:20", "stateMutability": "pure", "virtual": false, "visibility": "private" } ], "scope": 6433, "src": "403:9735:20" } ], "src": "0:10139:20" }, "compiler": { "name": "solc", "version": "0.7.4+commit.3f05b770.Emscripten.clang" }, "networks": {}, "schemaVersion": "3.3.2", "updatedAt": "2021-01-20T20:53:41.277Z", "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.", "kind": "dev", "methods": {}, "version": 1 }, "userdoc": { "kind": "user", "methods": {}, "version": 1 } }