starkware-libs/cairo v2.18.0 on GitHub

New Features

Added forwarding option for Starknet interfaces. #9847
Auto-generated forwarding impls can now be created for Starknet interfaces. This makes it easy to include interfaces declared in other contracts by forwarding the library calls.
Extensive macro system diagnostics improvements. #9842 #9844
#9845 #9846
The macro system received several improvements in robustness and diagnostics:
- Parser now emits E1031 when a macro repetition group $(...) is missing its required ?, +, or * operator.
- Macro rules with declaration-time errors are now tracked and skipped during expansion, preventing panics on broken rules.
- A no-progress guard prevents infinite loops when repetition patterns match zero tokens.
- Declaration-time diagnostics now validate placeholder usage in expansion patterns: E2198 is emitted when a placeholder is used outside its required repetition depth, and E2199 when placeholders from different repetition contexts are mixed in the same expansion block.

Removed no longer required extra gas-withdraw from Starknet entrypoint wrappers. #9792
Made apply optimizations trait-based for a unified interface. #9838
Made less calculations in BigInt and conversions. #9696
Eliminated redundant clone in store_variables invocation handling. #9715
Removed redundant clone in implicits goto remapping. #9782
Avoided clone in lower_expr_desnap by matching LoweredExpr by value. #9712
Avoided redundant Rc allocations in reboxing loop. #9706
Removed unnecessary Vec allocation in split_structs. #9654
Removed redundant clone in store_local calls. #9694
Removed unnecessary vector clone in closure capture. #9691
Much smaller clones in usages analysis. #9641
Removed redundant HashMap lookup in SCC algorithm. #9650
Used Entry API in add_drop to reduce hash lookups. #9674

Full Changelog: v2.17.0...v2.18.0