## Conf

# Struct Conf

Source

    pub struct Conf {Show 94 fields
        pub absolute_paths_allowed_crates: Vec<String>,
        pub absolute_paths_max_segments: u64,
        pub accept_comment_above_attributes: bool,
        pub accept_comment_above_statement: bool,
        pub allow_comparison_to_zero: bool,
        pub allow_dbg_in_tests: bool,
        pub allow_exact_repetitions: bool,
        pub allow_expect_in_consts: bool,
        pub allow_expect_in_tests: bool,
        pub allow_indexing_slicing_in_tests: bool,
        pub allow_mixed_uninlined_format_args: bool,
        pub allow_one_hash_in_raw_strings: bool,
        pub allow_panic_in_tests: bool,
        pub allow_print_in_tests: bool,
        pub allow_private_module_inception: bool,
        pub allow_renamed_params_for: Vec<String>,
        pub allow_unwrap_in_consts: bool,
        pub allow_unwrap_in_tests: bool,
        pub allow_useless_vec_in_tests: bool,
        pub allowed_dotfiles: Vec<String>,
        pub allowed_duplicate_crates: Vec<String>,
        pub allowed_idents_below_min_chars: Vec<String>,
        pub allowed_prefixes: Vec<String>,
        pub allowed_scripts: Vec<String>,
        pub allowed_wildcard_imports: Vec<String>,
        pub arithmetic_side_effects_allowed: Vec<String>,
        pub arithmetic_side_effects_allowed_binary: Vec<(String, String)>,
        pub arithmetic_side_effects_allowed_unary: Vec<String>,
        pub array_size_threshold: u64,
        pub avoid_breaking_exported_api: bool,
        pub await_holding_invalid_types: Vec<DisallowedPathWithoutReplacement>,
        pub blacklisted_names: Vec<String>,
        pub cargo_ignore_publish: bool,
        pub check_incompatible_msrv_in_tests: bool,
        pub check_inconsistent_struct_field_initializers: bool,
        pub check_private_items: bool,
        pub cognitive_complexity_threshold: u64,
        pub const_literal_digits_threshold: usize,
        pub cyclomatic_complexity_threshold: u64,
        pub disallowed_macros: Vec<DisallowedPath>,
        pub disallowed_methods: Vec<DisallowedPath>,
        pub disallowed_names: Vec<String>,
        pub disallowed_types: Vec<DisallowedPath>,
        pub doc_valid_idents: Vec<String>,
        pub enable_raw_pointer_heuristic_for_send: bool,
        pub enforce_iter_loop_reborrow: bool,
        pub enforced_import_renames: Vec<Rename>,
        pub enum_variant_name_threshold: u64,
        pub enum_variant_size_threshold: u64,
        pub excessive_nesting_threshold: u64,
        pub future_size_threshold: u64,
        pub ignore_interior_mutability: Vec<String>,
        pub inherent_impl_lint_scope: InherentImplLintScope,
        pub large_error_ignored: Vec<String>,
        pub large_error_threshold: u64,
        pub lint_commented_code: bool,
        pub lint_inconsistent_struct_field_initializers: bool,
        pub literal_representation_threshold: u64,
        pub matches_for_let_else: MatchLintBehaviour,
        pub max_fn_params_bools: u64,
        pub max_include_file_size: u64,
        pub max_struct_bools: u64,
        pub max_suggested_slice_pattern_length: u64,
        pub max_trait_bounds: u64,
        pub min_ident_chars_threshold: u64,
        pub missing_docs_allow_unused: bool,
        pub missing_docs_in_crate_items: bool,
        pub module_item_order_groupings: SourceItemOrderingModuleItemGroupings,
        pub module_items_ordered_within_groupings: SourceItemOrderingWithinModuleItemGroupings,
        pub msrv: Msrv,
        pub pass_by_value_size_limit: u64,
        pub pub_underscore_fields_behavior: PubUnderscoreFieldsBehaviour,
        pub recursive_self_in_type_definitions: bool,
        pub semicolon_inside_block_ignore_singleline: bool,
        pub semicolon_outside_block_ignore_multiline: bool,
        pub single_char_binding_names_threshold: u64,
        pub source_item_ordering: SourceItemOrdering,
        pub stack_size_threshold: u64,
        pub standard_macro_braces: Vec<MacroMatcher>,
        pub struct_field_name_threshold: u64,
        pub suppress_restriction_lint_in_const: bool,
        pub too_large_for_stack: u64,
        pub too_many_arguments_threshold: u64,
        pub too_many_lines_threshold: u64,
        pub trait_assoc_item_kinds_order: SourceItemOrderingTraitAssocItemKinds,
        pub trivial_copy_size_limit: Option<u64>,
        pub type_complexity_threshold: u64,
        pub unnecessary_box_size: u64,
        pub unreadable_literal_lint_fractions: bool,
        pub upper_case_acronyms_aggressive: bool,
        pub vec_box_size_threshold: u64,
        pub verbose_bit_mask_threshold: u64,
        pub warn_on_all_wildcard_imports: bool,
        pub warn_unsafe_macro_metavars_in_private_macros: bool,
    }

Expand description

Clippy lint configuration

## Fields§

§`absolute_paths_allowed_crates: Vec<String>`

Which crates to allow absolute paths from

§`absolute_paths_max_segments: u64`

The maximum number of segments a path can have before being linted, anything above this will be linted.

§`accept_comment_above_attributes: bool`

Whether to accept a safety comment to be placed above the attributes for the `unsafe` block

§`accept_comment_above_statement: bool`

Whether to accept a safety comment to be placed above the statement containing the `unsafe` block

§`allow_comparison_to_zero: bool`

Don’t lint when comparing the result of a modulo operation to zero.

§`allow_dbg_in_tests: bool`

Whether `dbg!` should be allowed in test functions or `#[cfg(test)]`

§`allow_exact_repetitions: bool`

Whether an item should be allowed to have the same name as its containing module

§`allow_expect_in_consts: bool`

Whether `expect` should be allowed in code always evaluated at compile time

§`allow_expect_in_tests: bool`

Whether `expect` should be allowed in test functions or `#[cfg(test)]`

§`allow_indexing_slicing_in_tests: bool`

Whether `indexing_slicing` should be allowed in test functions or `#[cfg(test)]`

§`allow_mixed_uninlined_format_args: bool`

Whether to allow mixed uninlined format args, e.g. `format!("{} {}", a, foo.bar)`

§`allow_one_hash_in_raw_strings: bool`

Whether to allow `r#""#` when `r""` can be used

§`allow_panic_in_tests: bool`

Whether `panic` should be allowed in test functions or `#[cfg(test)]`

§`allow_print_in_tests: bool`

Whether print macros (ex. `println!`) should be allowed in test functions or `#[cfg(test)]`

§`allow_private_module_inception: bool`

Whether to allow module inception if it’s not public.

§`allow_renamed_params_for: Vec<String>`

List of trait paths to ignore when checking renamed function parameters.

###### §Example

    allow-renamed-params-for = [ "std::convert::From" ]

###### §Noteworthy

- By default, the following traits are ignored: `From`, `TryFrom`, `FromStr`
- `".."` can be used as part of the list to indicate that the configured values should be appended to the default configuration of Clippy. By default, any configuration will replace the default value.

§`allow_unwrap_in_consts: bool`

Whether `unwrap` should be allowed in code always evaluated at compile time

§`allow_unwrap_in_tests: bool`

Whether `unwrap` should be allowed in test functions or `#[cfg(test)]`

§`allow_useless_vec_in_tests: bool`

Whether `useless_vec` should ignore test functions or `#[cfg(test)]`

§`allowed_dotfiles: Vec<String>`

Additional dotfiles (files or directories starting with a dot) to allow

§`allowed_duplicate_crates: Vec<String>`

A list of crate names to allow duplicates of

§`allowed_idents_below_min_chars: Vec<String>`

Allowed names below the minimum allowed characters. The value `".."` can be used as part of the list to indicate, that the configured values should be appended to the default configuration of Clippy. By default, any configuration will replace the default value.

§`allowed_prefixes: Vec<String>`

List of prefixes to allow when determining whether an item’s name ends with the module’s name. If the rest of an item’s name is an allowed prefix (e.g. item `ToFoo` or `to_foo` in module `foo`), then don’t emit a warning.

###### §Example

    allowed-prefixes = [ "to", "from" ]

###### §Noteworthy

- By default, the following prefixes are allowed: `to`, `as`, `into`, `from`, `try_into` and `try_from`
- PascalCase variant is included automatically for each snake_case variant (e.g. if `try_into` is included, `TryInto` will also be included)
- Use `".."` as part of the list to indicate that the configured values should be appended to the default configuration of Clippy. By default, any configuration will replace the default value

§`allowed_scripts: Vec<String>`

The list of unicode scripts allowed to be used in the scope.

§`allowed_wildcard_imports: Vec<String>`

List of path segments allowed to have wildcard imports.

###### §Example

    allowed-wildcard-imports = [ "utils", "common" ]

###### §Noteworthy

1. This configuration has no effects if used with `warn_on_all_wildcard_imports = true`.
2. Paths with any segment that containing the word ‘prelude’ are already allowed by default.

§`arithmetic_side_effects_allowed: Vec<String>`

Suppress checking of the passed type names in all types of operations.

If a specific operation is desired, consider using `arithmetic_side_effects_allowed_binary` or `arithmetic_side_effects_allowed_unary` instead.

###### §Example

    arithmetic-side-effects-allowed = ["SomeType", "AnotherType"]

###### §Noteworthy

A type, say `SomeType`, listed in this configuration has the same behavior of `["SomeType" , "*"], ["*", "SomeType"]` in `arithmetic_side_effects_allowed_binary`.

§`arithmetic_side_effects_allowed_binary: Vec<(String, String)>`

Suppress checking of the passed type pair names in binary operations like addition or multiplication.

Supports the “*” wildcard to indicate that a certain type won’t trigger the lint regardless of the involved counterpart. For example, `["SomeType", "*"]` or `["*", "AnotherType"]`.

Pairs are asymmetric, which means that `["SomeType", "AnotherType"]` is not the same as `["AnotherType", "SomeType"]`.

###### §Example

    arithmetic-side-effects-allowed-binary = [["SomeType" , "f32"], ["AnotherType", "*"]]

§`arithmetic_side_effects_allowed_unary: Vec<String>`

Suppress checking of the passed type names in unary operations like “negation” (`-`).

###### §Example

    arithmetic-side-effects-allowed-unary = ["SomeType", "AnotherType"]

§`array_size_threshold: u64`

The maximum allowed size for arrays on the stack

§`avoid_breaking_exported_api: bool`

Suppress lints whenever the suggested change would cause breakage for other crates.

§`await_holding_invalid_types: Vec<DisallowedPathWithoutReplacement>`

The list of types which may not be held across an await point.

§`blacklisted_names: Vec<String>`

DEPRECATED LINT: BLACKLISTED_NAME.

Use the Disallowed Names lint instead

§`cargo_ignore_publish: bool`

For internal testing only, ignores the current `publish` settings in the Cargo manifest.

§`check_incompatible_msrv_in_tests: bool`

Whether to check MSRV compatibility in `#[test]` and `#[cfg(test)]` code.

§`check_inconsistent_struct_field_initializers: bool`

Whether to suggest reordering constructor fields when initializers are present.

Warnings produced by this configuration aren’t necessarily fixed by just reordering the fields. Even if the suggested code would compile, it can change semantics if the initializer expressions have side effects. The following example from rust-clippy#11846 shows how the suggestion can run into borrow check errors:

    struct MyStruct {
        vector: Vec<u32>,
        length: usize
    }
    fn main() {
        let vector = vec![1,2,3];
        MyStruct { length: vector.len(), vector};
    }

§`check_private_items: bool`

Whether to also run the listed lints on private items.

§`cognitive_complexity_threshold: u64`

The maximum cognitive complexity a function can have

§`const_literal_digits_threshold: usize`

The minimum digits a const float literal must have to supress the `excessive_precicion` lint

§`cyclomatic_complexity_threshold: u64`

DEPRECATED LINT: CYCLOMATIC_COMPLEXITY.

Use the Cognitive Complexity lint instead.

§`disallowed_macros: Vec<DisallowedPath>`

The list of disallowed macros, written as fully qualified paths.

Fields:

- `path` (required): the fully qualified path to the macro that should be disallowed
- `reason` (optional): explanation why this macro is disallowed
- `replacement` (optional): suggested alternative macro
- `allow-invalid` (optional, `false` by default): when set to `true`, it will ignore this entry if the path doesn’t exist, instead of emitting an error

§`disallowed_methods: Vec<DisallowedPath>`

The list of disallowed methods, written as fully qualified paths.

Fields:

- `path` (required): the fully qualified path to the method that should be disallowed
- `reason` (optional): explanation why this method is disallowed
- `replacement` (optional): suggested alternative method
- `allow-invalid` (optional, `false` by default): when set to `true`, it will ignore this entry if the path doesn’t exist, instead of emitting an error

§`disallowed_names: Vec<String>`

The list of disallowed names to lint about. NB: `bar` is not here since it has legitimate uses. The value `".."` can be used as part of the list to indicate that the configured values should be appended to the default configuration of Clippy. By default, any configuration will replace the default value.

§`disallowed_types: Vec<DisallowedPath>`

The list of disallowed types, written as fully qualified paths.

Fields:

- `path` (required): the fully qualified path to the type that should be disallowed
- `reason` (optional): explanation why this type is disallowed
- `replacement` (optional): suggested alternative type
- `allow-invalid` (optional, `false` by default): when set to `true`, it will ignore this entry if the path doesn’t exist, instead of emitting an error

§`doc_valid_idents: Vec<String>`

The list of words this lint should not consider as identifiers needing ticks. The value `".."` can be used as part of the list to indicate, that the configured values should be appended to the default configuration of Clippy. By default, any configuration will replace the default value. For example:

- `doc-valid-idents = ["ClipPy"]` would replace the default list with `["ClipPy"]`.
- `doc-valid-idents = ["ClipPy", ".."]` would append `ClipPy` to the default list.

§`enable_raw_pointer_heuristic_for_send: bool`

Whether to apply the raw pointer heuristic to determine if a type is `Send`.

§`enforce_iter_loop_reborrow: bool`

Whether to recommend using implicit into iter for reborrowed values.

###### §Example

    let mut vec = vec![1, 2, 3];
    let rmvec = &mut vec;
    for _ in rmvec.iter() {}
    for _ in rmvec.iter_mut() {}

Use instead:

    let mut vec = vec![1, 2, 3];
    let rmvec = &mut vec;
    for _ in &*rmvec {}
    for _ in &mut *rmvec {}

§`enforced_import_renames: Vec<Rename>`

The list of imports to always rename, a fully qualified path followed by the rename.

§`enum_variant_name_threshold: u64`

The minimum number of enum variants for the lints about variant names to trigger

§`enum_variant_size_threshold: u64`

The maximum size of an enum’s variant to avoid box suggestion

§`excessive_nesting_threshold: u64`

The maximum amount of nesting a block can reside in

§`future_size_threshold: u64`

The maximum byte size a `Future` can have, before it triggers the `clippy::large_futures` lint

§`ignore_interior_mutability: Vec<String>`

A list of paths to types that should be treated as if they do not contain interior mutability

§`inherent_impl_lint_scope: InherentImplLintScope`

Sets the scope (“crate”, “file”, or “module”) in which duplicate inherent `impl` blocks for the same type are linted.

§`large_error_ignored: Vec<String>`

A list of paths to types that should be ignored as overly large `Err`-variants in a `Result` returned from a function

§`large_error_threshold: u64`

The maximum size of the `Err`-variant in a `Result` returned from a function

§`lint_commented_code: bool`

Whether collapsible `if` and `else if` chains are linted if they contain comments inside the parts that would be collapsed.

§`lint_inconsistent_struct_field_initializers: bool`

Whether to suggest reordering constructor fields when initializers are present. DEPRECATED CONFIGURATION: lint-inconsistent-struct-field-initializers

Use the `check-inconsistent-struct-field-initializers` configuration instead.

§`literal_representation_threshold: u64`

The lower bound for linting decimal literals

§`matches_for_let_else: MatchLintBehaviour`

Whether the matches should be considered by the lint, and whether there should be filtering for common types.

§`max_fn_params_bools: u64`

The maximum number of bool parameters a function can have

§`max_include_file_size: u64`

The maximum size of a file included via `include_bytes!()` or `include_str!()`, in bytes

§`max_struct_bools: u64`

The maximum number of bool fields a struct can have

§`max_suggested_slice_pattern_length: u64`

When Clippy suggests using a slice pattern, this is the maximum number of elements allowed in the slice pattern that is suggested. If more elements are necessary, the lint is suppressed. For example, `[_, _, _, e, ..]` is a slice pattern with 4 elements.

§`max_trait_bounds: u64`

The maximum number of bounds a trait can have to be linted

§`min_ident_chars_threshold: u64`

Minimum chars an ident can have, anything below or equal to this will be linted.

§`missing_docs_allow_unused: bool`

Whether to allow fields starting with an underscore to skip documentation requirements

§`missing_docs_in_crate_items: bool`

Whether to only check for missing documentation in items visible within the current crate. For example, `pub(crate)` items.

§`module_item_order_groupings: SourceItemOrderingModuleItemGroupings`

The named groupings of different source item kinds within modules.

§`module_items_ordered_within_groupings: SourceItemOrderingWithinModuleItemGroupings`

Whether the items within module groups should be ordered alphabetically or not.

This option can be configured to “all”, “none”, or a list of specific grouping names that should be checked (e.g. only “enums”).

§`msrv: Msrv`

The minimum rust version that the project supports. Defaults to the `rust-version` field in `Cargo.toml`

§`pass_by_value_size_limit: u64`

The minimum size (in bytes) to consider a type for passing by reference instead of by value.

§`pub_underscore_fields_behavior: PubUnderscoreFieldsBehaviour`

Lint “public” fields in a struct that are prefixed with an underscore based on their exported visibility, or whether they are marked as “pub”.

§`recursive_self_in_type_definitions: bool`

Whether the type itself in a struct or enum should be replaced with `Self` when encountering recursive types.

§`semicolon_inside_block_ignore_singleline: bool`

Whether to lint only if it’s multiline.

§`semicolon_outside_block_ignore_multiline: bool`

Whether to lint only if it’s singleline.

§`single_char_binding_names_threshold: u64`

The maximum number of single char bindings a scope may have

§`source_item_ordering: SourceItemOrdering`

Which kind of elements should be ordered internally, possible values being `enum`, `impl`, `module`, `struct`, `trait`.

§`stack_size_threshold: u64`

The maximum allowed stack size for functions in bytes

§`standard_macro_braces: Vec<MacroMatcher>`

Enforce the named macros always use the braces specified.

A `MacroMatcher` can be added like so `{ name = "macro_name", brace = "(" }`. If the macro could be used with a full path two `MacroMatcher`s have to be added one with the full path `crate_name::macro_name` and one with just the macro name.

§`struct_field_name_threshold: u64`

The minimum number of struct fields for the lints about field names to trigger

§`suppress_restriction_lint_in_const: bool`

Whether to suppress a restriction lint in constant code. In same cases the restructured operation might not be unavoidable, as the suggested counterparts are unavailable in constant code. This configuration will cause restriction lints to trigger even if no suggestion can be made.

§`too_large_for_stack: u64`

The maximum size of objects (in bytes) that will be linted. Larger objects are ok on the heap

§`too_many_arguments_threshold: u64`

The maximum number of argument a function or method can have

§`too_many_lines_threshold: u64`

The maximum number of lines a function or method can have

§`trait_assoc_item_kinds_order: SourceItemOrderingTraitAssocItemKinds`

The order of associated items in traits.

§`trivial_copy_size_limit: Option<u64>`

The maximum size (in bytes) to consider a `Copy` type for passing by value instead of by reference.

§`type_complexity_threshold: u64`

The maximum complexity a type can have

§`unnecessary_box_size: u64`

The byte size a `T` in `Box<T>` can have, below which it triggers the `clippy::unnecessary_box` lint

§`unreadable_literal_lint_fractions: bool`

Should the fraction of a decimal be linted to include separators.

§`upper_case_acronyms_aggressive: bool`

Enables verbose mode. Triggers if there is more than one uppercase char next to each other

§`vec_box_size_threshold: u64`

The size of the boxed type in bytes, where boxing in a `Vec` is allowed

§`verbose_bit_mask_threshold: u64`

The maximum allowed size of a bit mask before suggesting to use ‘trailing_zeros’

§`warn_on_all_wildcard_imports: bool`

Whether to emit warnings on all wildcard imports, including those from `prelude`, from `super` in tests, or for `pub use` reexports.

§`warn_unsafe_macro_metavars_in_private_macros: bool`

Whether to also emit warnings for unsafe blocks with metavariable expansions in private macros.

## Implementations§

Source§

### impl Conf

Source

#### pub fn read( sess: &Session, path: &Result<(Option<PathBuf>, Vec<String>)>, ) -> &'static Conf

Source

#### fn read_inner( sess: &Session, path: &Result<(Option<PathBuf>, Vec<String>)>, ) -> Conf

## Trait Implementations§

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### impl Default for Conf

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#### fn default() -> Self

Returns the “default value” for a type. Read more

## Auto Trait Implementations§

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### impl Freeze for Conf

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### impl RefUnwindSafe for Conf

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### impl Send for Conf

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### impl Sync for Conf

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### impl Unpin for Conf

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### impl UnwindSafe for Conf

## Blanket Implementations§

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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> IntoEither for T

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#### fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left` is `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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#### fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts `self` into a `Left` variant of `Either<Self, Self>` if `into_left(&self)` returns `true`. Converts `self` into a `Right` variant of `Either<Self, Self>` otherwise. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

## Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain `repr(...)` attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 1008 bytes