starkware-libs/cairo v2.7.0

on GitHub

This is the Cairo version associated with Starknet 0.13.2. Contracts written with 2.7.0 are not declarable on Starknet until the upgrade.

Major Updates

• Trait and Impl items (types, constants, and impls):
  • Example usage for types would be Iterator::Item.
  • Example usage for constants would be NumericBounds::MAX (does not exist just yet).
  • Example usage for impls would be IntoIterator::Iterator.
• SHA256 support.
• Modulus Circuit Support - allows for efficient calculations of large modular computations without branches.
• Storage path and pointer concepts.
  • Instead of only being able to access storage in contract and component context - StoragePath StoragePointer are supplied, allowing for functions out of this scope to access these, as well as allowing for recursive definitions of maps and other structures.
• Added support for access to members of types implementing the Deref and DerefMut traits.

New Features

• Fixed sized array support for .span() allowing accessing it efficiently as if it was an array.
• Add flag to enable gas to cairo-test. #5288
• Added option to print used resources for tests. #5266
• Added fmt for signed int. #5308
• feat: Default impls for signed integer types by @milancermak in #5312
• Added compiler_error! inline macro for external plugin development. #5357
• Add Copy trait to Call by @delaaxe in #5372
• Added handling testing option for get-block-hash. #5368
• Add phantom attribute - making a type unconstructible. #5381
• Added implementation for / and % for signed integers.
• feat: checked math traits by @enitrat in #5410
• Made all generated code have a mapped originating code - basically all diagnostics no longer points to generated files. #5497
• feat: result ok and err methods by @enitrat in #5565
• Added multi-pop for span. #5588
• feat: saturating traits by @enitrat in #5621
• Updated Index traits and deprecated the old ones. #5674
• Added core::iter::Iterator and core::iter::IntoIterator traits.
• Added *Assign ops and Depracated *Eq ops. #5679
• feat: add PartialOrdSnap impl by @tdelabro in #5723
• feat: impl Into for Span/Array pair by @tdelabro in #5650
• Added automatic support for tuples up to size 10 of Copy, Drop, Clone Destruct, Default, 'Debug, Serde, PartialEqandstarknet::Store`.
• Made list of allowed derives explicit. #5804
• Added keccak on byte-array. #5877
• For loops full support - on any type implementing IntoIterator trait.
• Require destruct instead of drop for unwrapping. #5902
• Added Default for Option. #5920
• Allow for implicit impls for impl impl items. #5915
• Add 2024_07 edition. #5923
  • Vastly reducing the amount of items in the prelude.
  • Not auto adding pub for starknet storage members.
• Better diagnostics for types missing :: in expression context. #5926
• Vastly reduce diagnostics that are less useful when others appear. #5930
• Add compiler flag to disable non-always inlining by @javra in #5911
• Faster tests when not in profiling mode. #6014
• Added WideMul and Sqrt traits. #6017
• Added diagnostics for conflicting storage members.
• Added core::num::traits::Bounded. #6063

Bug Fixes

• Added destructors in cycle detectors. #5335
• Testing throws an error upon redeployment of the same contract. #5365
• Preventing box values from being const-folded. #5416
• Fixed extra gas reduction panic. #5437
• Fixed loop inside loop issue. #5441
• Avoid panics in print! and format! macros when missing parens. #5470
• Made feedback set algorithm not ignore the nodes post cycle. #5539
• Fix formatting of comments following an indented block. by @gilbens-starkware in #5878
• Fixing formatting of long unsplittable words. #5906
• Fixed issue #5967 . #5968
• Added storage Vec. #5974
• Filtering duplicated diagnostics. #6001
• Added support for tuple auto implementations for up to size 15. #6013
• Fixed generic parameters cycle detection. #6094

Deprecations

• Deprecation warning for consteval_int!. #6019
• Deprecation warning for most direct integer libfuncs (use the relevant trait instead).
• Updated Index traits and deprecated the old ones. #5674
• Added *Assign ops and Depracated *Eq ops. #5679
• Added core::integer::BoundedInt trait. #6064

Language Server Updates

• Code action for unused variable. #5214
• Show rust doc when hovering over things. #5225
• Catch query panics when refreshing diagnostics. #5469
• Fix hover definition lookup logic. #5603
• Added cairo icon to ensure all .cairo extensions are recognisable by @Utilitycoder in #5665
• Implement hover definition for variables & params. #5806
• Show path to item definition parent item in hovers. #5819
• Provide trait/impl/struct/enum context for item hovers. #5821
• Run Cairo formatter over item signatures in hover. #5822
• Added documentation for inline macros.

New Contributors

• @barabanovro made their first contribution in #5157
• @jujube made their first contribution in #5369
• @tcoratger made their first contribution in #5517
• @cario-dev made their first contribution in #5554
• @Utilitycoder made their first contribution in #5665
• @seay404 made their first contribution in #5696
• @AtomicInnovation321 made their first contribution in #5707
• @lido333 made their first contribution in #5726
• @healthyyyoung made their first contribution in #5781
• @dependabot made their first contribution in #5794
• @petersssong made their first contribution in #5818
• @jjjike2021 made their first contribution in #5881
• @dan-starkware made their first contribution in #5985

Full Changelog: v2.6.4...v2.7.0