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An interactive Solidity Shell

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tintinweb/solidity-shell

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get in touch with Consensys Diligence
[ 🌐 📩 🔥]

Solidity Shell

An interactive Solidity shell with lightweight session recording and remote compiler support.

💾npm install -g solidity-shell

⇒solidity-shell🚀EnteringinteractiveSolidityshell.'.help'and'.exit'areyourfriends.»ℹ️ganache-mgr:startingtemp.ganacheinstance ...»»uinta=100»uintb=200»a+b+2+uint8(50)352»$_352

Oh, did you know that we automatically fetch a matching remote compiler when you change the solidity pragma? It is as easy as typingpragma solidity 0.5.0 and solidity-shell will do the rest 🙌.

Hints

  • pragma solidity <version> attempts to dynamically load the selected compiler version (remote compiler, may take a couple of seconds).
  • use{ <statement>; } to ignore a calls return value.
  • Sessions can be saved and restored using the.session command. Your previous session is always stored and can be loaded via.session load previous (not safe when running concurrent shells).
  • .reset completely removes all statements..undo removes the last statement.
  • See what's been generated under the hood? call.dump.
  • Settings are saved on exit (not safe when running concurrent shells). callconfig set <key> <value> to change settings like ganache port, ganache autostart, etc.
  • $_ is a placeholder for the last known result. Feel free to use that placeholder in your scripts :)
  • Special commands are dot-prefixed. Everything else is evaluated as Solidity code.
  • import "<path>" assumes thatpath is relative to the current working-dir (CWD) or{CWD}/node_modules/. There's experimental support for HTTPs URL's. You can disable https resolving by setting » .config set resolveHttpImports false.
 »import"https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-contracts/master/contracts/token/ERC721/IERC721.sol"

Usage

Cmdline Passthru

Any arguments provided after an empty-- are directly passed toganacheCmd (default:ganache-cli). This way, for example, you can start a solidity shell on a ganache fork of mainnet via infura. Checkganache-cli --help for a list of available options.

⇒  solidity-shell -- --fork https://mainnet.infura.io/v3/yourApiToken 🚀 Entering interactive Solidity shell. Type'.help'for help,'.exit' to exit. »  ℹ️  ganache-mgr: starting temp. ganache instance ... » »  interface ERC20 {multi>functionname() external view returns (string memory);multi> }  »ERC20(0xB8c77482e45F1F44dE1745F52C74426C631bDD52).name()BNB

Repl

🚀 Entering interactive Solidity ^0.8.11 shell.'.help' and'.exit' are your friends. »  ℹ️  ganache-mgr: starting temp. ganache instance ... » »  .help📚 Help:   -----$_ is a placeholder holding the most recent evaluation result. pragma solidity<version> to change the compiler version. General:    .help                                ... thishelp :)    .exit                                ...exit the shell Source:    .fetch             interface<address><name> [chain=mainnet] ... fetch and load an interface declaration from an ABI spec on etherscan.io    .inspect            bytecode                     ... show bytecode of underlying contract            opcodes                      ... show disassembled opcodes of underlying contract            storageLayout                ... show variable to storage slot mappingfor underlying contract            storage<slot><num> [<address>] ... show raw storage at slot of underlying deployed contract             deployed                     ... debug: show internal contract object Blockchain:    .chain                                     restart                      ... restart the blockchain service            set-provider<fork-url>      ..."internal"|<shell-command: e.g. ganache-cli>|<https://localhost:8545>                                            - fork url e.g. https://mainnet.infura.io/v3/yourApiKey              accounts                     ...return eth_getAccounts            eth_<X> [...args]            ... initiate an arbitrary eth JSONrpc method call to blockchain provider. Settings:    .config                              ... show settingsset<key><value>            ...set settingunset<key>                  ...unset setting Session:    .session                             ... list sessions            load<id>                    ... load session            save<id>                    ... save session    .undo                                ... undo lastcommand    .reset                               ... reset cmd history. start from scratch. Debug:    .proc                                ... show processes managed by solidity-shell (ganache)    .dump                                ... show template contract    .echo                                ... every shell needs anechocommandcheers 🙌     @tintinweb     ConsenSys Diligence @ https://consensys.net/diligence/    https://github.com/tintinweb/solidity-shell/

Examples

solidity-shell

Transaction vars:msg.sender etc.

»msg.sender0x70e9B09abd6A13D2F5083CD5814076b77427199F»address(uint160(address(msg.sender)))0x70e9B09abd6A13D2F5083CD5814076b77427199F

Contracts, Structs, Functions

⇒solidity-shell🚀EnteringinteractiveSolidityshell.Type'.help'forhelp,'.exit'toexit.»ℹ️ganache-mgr:startingtemp.ganacheinstance ...»»contractTestContract{}»newTestContract()0xFBC1B2e79D816E36a1E1e923dd6c6fad463F4368»msg.sender0x363830C6aee2F0c43922bcB785C570a7cca613b5»block.timestamp1630339581»structyolo{uint8x;uint8y;}»functionmytest(uintx)publicpurereturns(uint){multi>returnx-5;multi>}»mytest(100)95

solidity-shell2

Advanced usage

»structyolo{uint8x;uint8y;}».dump// SPDX-License-Identifier: GPL-2.0-or-laterpragmasolidity^0.8.7;contractTestContract{}structyolo{uint8x;uint8y;}contractMainContract{functionmain()public{uinta=100;uintb=200;a+b+2+uint8(50);newTestContract();msg.sender;block.timestamp;return;}}

Fetch Interface Declaration from Etherscan

shell-fetch-interface

.fetch interface <address> <interfaceName> [optional: chain=mainnet]

⇒  solidity-shell --fork https://mainnet.infura.io/v3/<yourApiKey>                                                                                                 🚀 Entering interactive Solidity ^0.8.16 shell (🧁:Ganache built-in). '.help' and '.exit' are your friends. »   »  .fetch interface 0x40cfEe8D71D67108Db46F772B7e2CD55813Bf2FB Test »  interface Test {        ... omitted ...    function symbol() external view returns (string memory);    function tokenURI(uint256 tokenId) external view returns (string memory);    function totalSupply() external view returns (uint256);    function transferFrom(        address from,        address to,        uint256 tokenId    ) external;    function transferOwnership(address newOwner) external;    function withdraw() external;} »  Test t = Test(0x40cfEe8D71D67108Db46F772B7e2CD55813Bf2FB) »  t.symbol()MGX

Inspect Contract Storage on Ganache Fork

  1. Run solidity shell infork-mode.
  2. Display contract storage at latest block.
⇒  solidity-shell --fork https://mainnet.infura.io/v3/<yourApiKey>    🚀 Entering interactive Solidity ^0.8.16 shell (🧁:Ganache built-in, ⇉ fork-mode). '.help' and '.exit' are your friends. »  .inspect storage 0 10 0x40cfEe8D71D67108Db46F772B7e2CD55813Bf2FB »       📚 Contract:      0x40cfee8d71d67108db46f772b7e2cd55813bf2fb @ latest block     slot              1f 1e 1d 1c 1b 1a 19 18 17 16 15 14 13 12 11 10 0f 0e 0d 0c 0b 0a 09 08 07 06 05 04 03 02 01 00  --------------------------------------------------------------------------------------------------------------------  0x000000 (   0)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 1d c7    ................................  0x000001 (   1)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................  0x000002 (   2)      54 68 65 20 4d 61 67 69 78 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 12    The Magix.......................  0x000003 (   3)      4d 47 58 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 06    MGX.............................  0x000004 (   4)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................  0x000005 (   5)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................  0x000006 (   6)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................  0x000007 (   7)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................  0x000008 (   8)      00 00 00 00 00 00 00 00 00 00 00 00 d7 4e 84 57 2f 5f 7b 5d 41 47 4e be d9 b3 02 0a 2e 52 6f c6    .............N.W/_{]AGN......Ro.  0x000009 (   9)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 27 0f    ..............................'.

Inspect Generated Contract

  solidity-shell        🚀 Entering interactive Solidity ^0.8.16 shell (🧁:Ganache built-in, ⇉ fork-mode). '.help' and '.exit' are your friends. »  1+12 »  .inspect bytecode6080604052348015610010576000 ... 03a7bab64736f6c63430008100033 »  .inspect opcodesPUSH1 0x80 PUSH1 0x40 MSTORE CALLVALUE ... SLOAD 0xDA POP GASPRICE PUSH28 0xAB64736F6C6343000810003300000000000000000000000000000000  »  .inspect storageLayout{ storage: [], types: null } »  .inspect storage 0 4 »       📚 Contract:      0xCa1061046396daF801dEB0D848FcfeA055fAfBFC @ latest block     slot              1f 1e 1d 1c 1b 1a 19 18 17 16 15 14 13 12 11 10 0f 0e 0d 0c 0b 0a 09 08 07 06 05 04 03 02 01 00  --------------------------------------------------------------------------------------------------------------------  0x000000 (   0)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................  0x000001 (   1)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................  0x000002 (   2)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................  0x000003 (   3)      00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00    ................................

Acknowledgements

  • Inspired by the great but unfortunately unmaintainedsolidity-repl.
  • Fetch interfaces from Etherscan is powered byabi-to-sol.
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