More clippy rules#8127

ShaharNaveh

Closes #xxxx
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Summary

Summary by CodeRabbit

Chores
- Updated build configuration linting rules.
- Refactored internal code for improved performance and maintainability across compiler, runtime, and stdlib modules.

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📥 Commits

Reviewing files that changed from the base of the PR and between 93fbe4f and 8c44746.

📒 Files selected for processing (20)

Cargo.toml
crates/codegen/src/compile.rs
crates/codegen/src/ir.rs
crates/common/src/format.rs
crates/host_env/src/crt_fd.rs
crates/host_env/src/fileutils.rs
crates/host_env/src/signal.rs
crates/stdlib/src/_asyncio.rs
crates/stdlib/src/binascii.rs
crates/vm/src/builtins/float.rs
crates/vm/src/builtins/type.rs
crates/vm/src/protocol/callable.rs
crates/vm/src/protocol/number.rs
crates/vm/src/protocol/sequence.rs
crates/vm/src/stdlib/_ast.rs
crates/vm/src/stdlib/_io.rs
crates/vm/src/stdlib/_signal.rs
crates/vm/src/types/slot.rs
crates/vm/src/vm/thread.rs
crates/vm/src/vm/vm_new.rs

📝 Walkthrough

Walkthrough

Eight new Clippy lints are enabled in the workspace Cargo.toml, and code across codegen, common, host_env, stdlib, and vm crates is updated to comply. Most changes convert &self/&T receivers and parameters to by-value for Copy types, elide redundant lifetime annotations, and consolidate generic bounds.

Changes

Clippy Lint Enablement and Compliance

Layer / File(s)	Summary
Workspace Clippy lint configuration and float.rs suppression `Cargo.toml`, `crates/vm/src/builtins/float.rs`	Adds eight new `warn`-level Clippy lints to the workspace; adds a targeted `#[expect(clippy::trivially_copy_pass_by_ref)]` in `PyFloat` where the signature is API-constrained.
codegen compile.rs: operators and CompileOpts by value `crates/codegen/src/compile.rs`	Changes `compile_addcompare`, `compile_augassign`, `compile_op`, `compile_bool_op`, and `emit_short_circuit_test` to accept AST operator enums by value; updates all call sites. Changes `split_doc_with_range` and `split_doc` to accept `CompileOpts` by value with updated module/class call sites.
codegen ir.rs: AnyInstruction by value `crates/codegen/src/ir.rs`	Changes `is_swappable` and `is_conditional_jump_opcode` to accept `AnyInstruction` by value; updates `next_swappable_instruction` and `normalize_jumps_in_block` accordingly.
FormatGrouping by-value conversion and host_env parameters `crates/common/src/format.rs`, `crates/host_env/src/crt_fd.rs`, `crates/host_env/src/fileutils.rs`, `crates/host_env/src/signal.rs`	Adds `From<FormatGrouping> for char` and delegates the reference impl to it; updates `validate_separator` to accept `FormatGrouping` by value. Changes `file_time_to_time_t_nsec` to accept `FILETIME` by value. Changes `sigset_contains` to accept `libc::sigset_t` by value. Elides explicit lifetime parameters in `Borrowed` impls and changes `OwnedInner::as_raw_fd` to take `self`.
VM protocol, builtins, and slot by-value receivers `crates/vm/src/protocol/callable.rs`, `crates/vm/src/protocol/number.rs`, `crates/vm/src/protocol/sequence.rs`, `crates/vm/src/builtins/type.rs`, `crates/vm/src/types/slot.rs`	Changes `TraceEvent` predicate methods to `const fn (self)`; moves `PyNumber::check` to `impl PyNumber<'_>`; changes `_ass_slice` receiver to `self`; changes `PointerSlot::borrow_static` to `self`; changes `SlotAccessor` in `update_one_slot` to by-value; simplifies `heap_default` to `Self::default()`.
stdlib and VM infrastructure by-value fixes `crates/stdlib/src/_asyncio.rs`, `crates/stdlib/src/binascii.rs`, `crates/vm/src/stdlib/_ast.rs`, `crates/vm/src/stdlib/_io.rs`, `crates/vm/src/stdlib/_signal.rs`, `crates/vm/src/vm/thread.rs`, `crates/vm/src/vm/vm_new.rs`	Changes `FutureState::as_str` to `const fn (self)`; changes `uu_a2b_read` to accept `u8` by value; changes `fold_number_binop` to accept `ast::Operator` by value; changes `Newlines::find_newline` to take `self`; changes `sigset_to_pyset` to accept `libc::sigset_t` by value; changes `handle_expected_token` to accept `TokenKind` by value; consolidates `start_thread` generic bounds.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Possibly related PRs

RustPython/RustPython#7755: Updates the same [workspace.lints.clippy] section in Cargo.toml with lint additions and reorganization.
RustPython/RustPython#8122: Also modifies workspace Clippy lint configuration in Cargo.toml by adding/enabling additional lints in the same section.
RustPython/RustPython#8123: Directly touches the same lint keys (doc_link_with_quotes, single_char_pattern) that are reorganized in this PR.

Suggested reviewers

youknowone
bschoenmaeckers

🐇 A rabbit who loves tidy code,
Swapped refs for values down the road,
Copy types now travel light,
No borrowed &self in sight,
Clippy smiled — the lints are owed! ✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 inconclusive)

Check name	Status	Explanation	Resolution
Title check	❓ Inconclusive	The title 'More clippy rules' is vague and generic. It references implementing clippy rules but does not convey the specific nature or scope of the changes made throughout the codebase.	Consider a more descriptive title that highlights the primary refactoring focus, such as 'Refactor pass-by-value patterns and apply clippy linting rules' or 'Optimize parameter passing and address clippy lint warnings'.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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ShaharNaveh added 9 commits June 17, 2026 10:55

clippy elidable_lifetime_names

1d9d7aa

large_types_passed_by_value

ef064c0

trivially_copy_pass_by_ref

f6d22b0

type_repetition_in_bounds

681c767

copy_iterator

42b6dc0

collection_is_never_read

bcb219b

same_functions_in_if_condition

9cd0a56

unnecessary_struct_initialization

5fd90d8

clippy on windows

8c44746

ssl windows

f7b46f7

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More clippy rules#8127