Crate rustc_attr

Functions and types dealing with attributes and meta items.

FIXME(Centril): For now being, much of the logic is still in rustc_ast::attr. The goal is to move the definition of MetaItem and things that don’t need to be in syntax to this crate.

Re-exports

pub use IntType::*;

pub use ReprAttr::*;

pub use StabilityLevel::*;

Modules

builtin 🔒

Parsing and validation of builtin attributes

session_diagnostics 🔒

Structs

AttrIdGenerator

Condition

ConstStability

Represents the #[rustc_const_unstable] and #[rustc_const_stable] attributes.

DefaultBodyStability

Represents the #[rustc_default_body_unstable] attribute.

Deprecation

MarkedAttrs

Stability

Represents the following attributes:

Enums

InlineAttr

InstructionSetAttr

IntType

OptimizeAttr

ReprAttr

StabilityLevel

The available stability levels.

TransparencyError

UnstableReason

Constants

VERSION_PLACEHOLDER

The version placeholder that recently stabilized features contain inside the since field of the #[stable] attribute.

Functions

allow_internal_unstable

cfg_matches

Tests if a cfg-pattern matches the cfg set

eval_condition

Evaluate a cfg-like condition (with any and all), using eval to evaluate individual items.

find_crate_name

find_deprecation

Finds the deprecation attribute. None if none exists.

find_repr_attrs

Parse #[repr(…)] forms.

find_stability

Collects stability info from all stability attributes in attrs. Returns None if no stability attributes are found.

find_transparency

is_builtin_attr

list_contains_name

mk_attr

mk_attr_from_item

mk_attr_inner

Returns an inner attribute with the given value and span.

mk_attr_outer

Returns an outer attribute with the given value and span.

mk_doc_comment

mk_list_item

mk_name_value_item

mk_name_value_item_str

mk_nested_word_item

mk_word_item

parse_alignment

parse_repr_attr

rust_version_symbol

rustc_allow_const_fn_unstable