v2.5.2

Bug Fixes

• Fixed execution order of struct-construct to stated member ordering. #4947
• Fixed while formatting. #4958
• Fixed bug in optimizing out code. #4961

Full Changelog: v2.5.1...v2.5.2

v2.5.1

New features

• Allow use starknet::get_block_number by @milancermak in #4914
• Added base struct for struct constructions. #4923
  • Usage example: A { a: 5, b: 7, ..base_struct_of_type_A }
• Display for snapshots by @piotmag769 in #4745
• Support feature at module and fn level. #4941

Bug fixes

• Fix try_into for integers to not panic. #4874
• Made integer overflowing ops pub. #4942
• Prevented starknet plugin from code generation on items not on config. #4909

New Contributors

• @keienWang made their first contribution in #4919

Full Changelog: v2.5.0...v2.5.1

v2.5.0

Read more on post.

Major updates

• Breaking change: starknet::Call::calldata is now a Span. Direct usages relying on it may break.
  • The change is required to vastly reduce the costs of using account contracts.
• New edition 2023_11 - introducing pub for struct members and module items.
  • Kudos to @Jinwei1987 for writing the original visibility addition code.
• Use cairofmt::skip in the formatter. #4387
• Added warnings - can be ignored in crate - and won't be affected by dependencies
  • Added warning for unhandled error types. #4454
  • Added warnings for unused variables. #4457
  • Depraction warning for external(v0) on impls. #4470
  • Added starknet ABI failures as warnings. #4493
  • Added abi failure + warning for account contract functions. #4575
  • Added warnings for bad embeddable impls. #4796
  • Added unstable and feature attributes and warnings on usage of unstable features.
    • Warning be ignored using feature("feature_name") on an expression wrapping the usage.
    • unstable specifically added for SafeDispatchers usage.
• Experimental feature for negative impls.
• Fixed get_dep_component inline macro. #4742

New Features

• Added Bits<T> in num module by @akhercha in #4251
• Added more data for missing method diagnostic. #4405
• Added assert_ne! test macro by @clint419 in #4424
• Adding snapshot forwarding. #4430
• Adding must_use annotation for types and functions.
• support for match out of order for enums. #4536
• Added Debug derive for various corelib types.
• support for otherwise pattern in match for enums. #4557
• support for match on true/false in parser and semantic. #4559
• Added Store impl for ByteArray. #4596
• Added while loops.
• Add bool::then_some function by @LucasLvy in #4529
• Add support for match on none felt252 numeric values. #4764
• Added Serde, Store, PartialEq, Debug and Display for NonZero. #4795
• Added PartialOrd for ContractAddress. #4863

Bug fixes

• Fix attribute parsing with only an identifier after. #4407
• Made auto-available traits be prelude based. #4410
• Made contract address calculation deterministic by @enitrat in #4391
• Fixed deploy syscall address registry by @enitrat in #4489
• Avoid Not a trait. diagnostic if a diagnostic was already reported. #4477
• Added error for nopanic cycles. #4643
• Added breaking of stack if no longer holding a var as temp. #4777

Optimizations

• Improve Span deserialization. #4595
• Better performance of is_empty. #4715
• Add return optimizations - if a value is ready for function return early - it is returned early - reducing many extra writes.
• Pass Call::calldata as a Span. #4620

Others

• Update linear-types.adoc by @Akare123 in #4508
• fix: several links pointing to legacy repository uri by @krauspt in #4568
• Update match-expressions.adoc by @AdventureSeeker987 in #4607
• fix: minor typos by @tudorpintea999 in #4500

New Contributors

• @clint419 made their first contribution in #4378
• @akhercha made their first contribution in #4251
• @dedushky made their first contribution in #4388
• @Akare123 made their first contribution in #4508
• @krauspt made their first contribution in #4568
• @AdventureSeeker987 made their first contribution in #4607
• @tudorpintea999 made their first contribution in #4500

Full Changelog: v2.4.3...v2.5.0

v2.4.4

What's Changed

• Refactoring for better errors.

Full Changelog: v2.4.3...v2.4.4

v2.5.0-dev.1

Internal release for internal development purposes only.

v2.4.3

What's Changed

• Update cairo-vm version to be "0.8.4-rc.0" specifically .#4731

Full Changelog: v2.4.2...v2.4.3

v2.4.2

What's Changed

• LS Memory usage improvements - reloading the entire backend in the background periodically to reduce the memory footprint.

Full Changelog: v2.4.1...v2.4.2

v2.5.0-dev.0

Internal release for internal development purposes only.

v2.4.1

Bug Fix

• Made generated storage variable modules have a non-friendly name, preventing colisions on module names. #4632

Full Changelog: v2.4.0...v2.4.1

v2.4.0

This is the Cairo version associated with Starknet 0.13.0. Contracts written with 2.4.0 are not declarable on Starknet until the upgrade.

Major Updates

• Added basic byte array formatting:
  • Added core::fmt::Formatter for creating a ByteArray constructively.
  • Added core::fmt::Display and core::fmt::Debug as traits describing how to write a value based on a format string.
  • Added derive for Debug for easy implementation of core::fmt::Debug.
  • Inline macros write! and writeln! - adds to a formatter: write!(f, "format_string({})", value).
  • Inline macro format! - creates a byte array: format!("format_string({})", value).
  • Inline macros print! and println! - prints a format string to stdout for debug: print!("format_string({})", value).
  • Inline macro panic! - panics with a formatted byte array: panic!("format_string({})", value).
  • Inline macro assert! - asserts condition:
    • Panic with the format string if the condition is false: assert!(cond, "format_string({})", value).
    • Panic with the condition as a bytearray if the condition is false: assert!(cond).
  • In test plugin only Inline macro assert_eq! - asserts equality condition: assert_eq!(a, b, "Extra description {}, param");
• Contracts with sierra versions 1.4.0 and up calculate gas usage in a more efficient way.
• Removed need for available_gas in tests not testing specific gas usage - Now using a default large value. (#4172)
  • If testing not using dynamic gas - add #[available_gas(static)] instead.
• Added Cairo Editions, allowing introducing opt-in for features that make break existing code.
  • Currently 2 editions exist: 2023_01 (default) and 2023_10.
• Added prelude (control for which code is in the context for all cairo code).
  • Previously - all the corelib base module was in the context of all cairo code.
  • Now - it is according to edition configured per crate:
    • 2023_01 - The prelude includes all the top level of the corelib as of the state of the corelib at release 2.3.1.
    • 2023_10 - A much smaller subset.
  • Users are encouraged to update their packages to the newest edition.
• Updated ExecutionInfo to be an extended version.

Bug Fixes

• Added support for bool and non copy nullable. #4340
• Raise diagnostic on impl inference cycle. #4367
• Made ap-changes be calculated without LP. #4250
  • Fixes various inconsistent annotations code.
  • Uses an algorithm similar to the new gas usage calculation - available only for 1.4.0 sierra declared classes.
• Handlng zero sized locals. #4414
• Added indirect impl support for inference. #4420
• Remove redundant gas assertions. #4464

Optimizations

• Removing extra store temps happening before store locals. #4173
• Added cast for signed integers. #3623
• Changed bytes31 casts to use libfunc upcast. #4098
• Accessing a member of a struct does not cause all the struct to be stored. #4263
• Avoid storing zero sized objects on the stack. #4290
• Adding Zero-Sized handling in the Sierra-to-casm compiler for better stack merging capabilities, and more efficient casm.
• Using efficient invmod implementation where possible. #4402

New Features

• Added libfunc for efficient u256 inv_mod_n. #3603
• Added Nullable deref_or method by @enitrat in #4037
• Added Option unwrap_or and unwrap_default by @Eikix in #4203
• Added append_array to Array. #4260
• Added match_nullable_snapshot. #4253
• Testing #[should_panic(expected: 'error')] supported - no need for wrapping ( ) in the case of a single var.
• Testing #[should_panic(expected: "error")] supported - for testing panicking with byte array.
• Add verify_signature function for secp curves. #4120
• Zero and One traits by @enitrat in #4254
• Support match on felt252 continuous from 0 and on values. #4284
• Skip attributes with no related item, getting better diagnostics for later code. #4296
• Added plugin suites. #4349
• Better compiler performance by avoiding data copies. #4244
• Caching compiler parser actions. #4247
• Allocate arguments before return values, generating more easily read Sierra code. #4258
• Move literal values validation to parser. #4295
• Made inline macro plugins point to the inner syntax, Improving diagnostics. #4345
• Improved Trait Mismatch diagnostic message. #4374

Others

• docs: fix typo by @shuoer86 in #4235
• fix typos by @vuittont60 in #4264
• Remove redundent diagnostics for inline macros. #4346

New Contributors

• @shuoer86 made their first contribution in #4235
• @Eikix made their first contribution in #4203
• @vuittont60 made their first contribution in #4264

Full Changelog: v2.3.1...v2.4.0