Module rustc_attr::builtin
source · Expand description
Parsing and validation of builtin attributes
Structs
- Represents the
#[rustc_const_unstable]
and#[rustc_const_stable]
attributes. - Represents the
#[rustc_default_body_unstable]
attribute. - Represents the following attributes:
- Version 🔒
Enums
- The available stability levels.
Constants
- The version placeholder that recently stabilized features contain inside the
since
field of the#[stable]
attribute.
Functions
- Tests if a cfg-pattern matches the cfg set
- Evaluate a cfg-like condition (with
any
andall
), usingeval
to evaluate individual items. - Collects stability info from
rustc_default_body_unstable
attributes inattrs
. ReturnsNone
if no stability attributes are found. - Collects stability info from
rustc_const_stable
/rustc_const_unstable
/rustc_promotable
attributes inattrs
. ReturnsNone
if no stability attributes are found. - Finds the deprecation attribute.
None
if none exists. - Parse #[repr(…)] forms.
- Collects stability info from
stable
/unstable
/rustc_allowed_through_unstable_modules
attributes inattrs
. ReturnsNone
if no stability attributes are found. - gate_cfg 🔒
- Read the content of a
rustc_confusables
attribute, and return the list of candidate names. - Read the content of a
stable
/rustc_const_stable
attribute, and return the feature name and its stability information. - Read the content of a
unstable
/rustc_const_unstable
/rustc_default_body_unstable
attribute, and return the feature name and its stability information.