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CHANGELOG.md

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Changelog

All notable changes to Solang will be documented here.

[0.1.9]

Added

  • Added support for solc import mapppings using --importmap
  • Added support for Events on Solana
  • msg.data, msg.sig, msg.value, block.number, and block.slot are implemented for Solana
  • Implemented balance transfers using .send() and .transfer() on Solana
  • Implemented retrieving account balances on Solana
  • Verify ed25519 signatures with signatureVerify() on Solana
  • Added support for Rational numbers
  • The address type and value type can changed using --address-length and --value-length command line arguments (for Substrate only)

Changed

  • Solana now requires v1.8.1 or later
  • On Solana, the return data is now provided in the program log. As a result, RPCs are now are now supported.
  • On the solang command line, the target must be specified.
  • The Solana instruction now includes a 64 bit value field
  • Many fixes to the parser and resolver, so solidity compatibility is much improved, thanks to sushi-shi.

Removed

  • The Sawtooth Sabre target has been removed.
  • The generic target has been removed.

[0.1.8]

Added

  • Added a strength reduce pass to eliminate 256/128 bit multiply, division, and modulo where possible.
  • Visual Studio Code extension can download the Solang binary from github releases, so the user is not required to download it themselves
  • The Solana target now has support for arrays and mapping in contract storage
  • The Solana target has support for the keccak256(), ripemd160(), and sha256() builtin hash functions.
  • The Solana target has support for the builtins this and block.timestamp.
  • Implement abi.encodePacked() for the ethereum abi encoder
  • The Solana target now compiles all contracts to a single bundle.so BPF program.
  • Any unused variables, events, or contract variables are now detected and warnings are given, thanks to LucasSte
  • The immutable attribute on contract storage variables is now supported.
  • The override attribute on public contract storage variables is now supported.
  • The unchecked {} code block is now parsed and supported. Math overflow still is unsupported for types larger than 64 bit.
  • assembly {} blocks are now parsed and give a friendly error message.
  • Any variable use before it is given a value is now detected and results in a undefined variable diagnostic, thanks to LucasSte

Changed

Fixed

  • Fix a number of issues with parsing the uniswap v2 contracts
  • ewasm: staticcall() and delegatecall() cannot take value argument
  • Fixed array support in the ethereum abi encoder and decoder
  • Fixed issues in arithmetic on non-power-of-2 types (e.g. uint112)

[0.1.7]

Added

  • Added a constant folding optimization pass to improve codegen. When variables fold to constant values, they are visible in the hover in the extension
  • For Substrate and Solana, address literals can specified with their base58 notation, e.g. address foo = address"5GBWmgdFAMqm8ZgAHGobqDqX6tjLxJhv53ygjNtaaAn3sjeZ";
  • Solana account storage implemented for bytes, string, and structs
  • Implemented delete for Solana

Changed

  • The Substrate target produces a single .contract file
  • The Substrate target now uses the salt argument for seal_instantiate()

Fixed

  • Libraries are allowed to have constant variables
  • Fixed ethereum abi encoding/decoding of structs and enums
  • Solana now returns an error if account data is not large enough
  • Fixed storage bytes push() and pop()
  • Ewasm uses precompiles for keccak hashing
  • Various ewasm fixes for Hyperledger Burrow

[0.1.6]

Added

  • New Visual Studio Code extension developed under Hyperledger Mentorship programme
  • Added language server for use in vscode extension
  • Implemented primitives types and operations for Solana
  • Functions can be declared outside of contracts
  • Constants can be declared outside of contracts
  • String formatting using python style "..{}..".format(n)

[0.1.5]

Added

  • Function types are implemented
  • An experimental Solana target has been added
  • Binaries are generated for Mac

Changed

  • The Substrate target requires Substrate 2.0

[0.1.4]

Added

  • event can be declared and emitted with emit
  • Function modifiers have been implemented
  • Tags in doc comments are parsed and resolved
  • All major Solidity language features implemented, see our language status page: https://solang.readthedocs.io/en/latest/status.html

[0.1.3]

Added

  • import directives are supported
  • New --importpath command line argument to specify directories to search for imports
  • Contracts can have base contracts
  • Contracts can be abstract
  • Interfaces are supported
  • Libraries are supported
  • The using library for type syntax is supported

Changed

  • Solang now uses llvm 10.0 rather than llvm 8.0
  • In line with Solidity 0.7.0, constructors no longer need a visibility argument