Enum rustdoc::clean::cfg::Cfg

pub enum Cfg {
    True,
    False,
    Cfg(Symbol, Option<Symbol>),
    Not(Box<Cfg>),
    Any(Vec<Cfg>),
    All(Vec<Cfg>),
}

Variants

True

Accepts all configurations.

False

Denies all configurations.

Cfg(Symbol, Option<Symbol>)

A generic configuration option, e.g., test or target_os = "linux".

Not(Box<Cfg>)

Negates a configuration requirement, i.e., not(x).

Any(Vec<Cfg>)

Union of a list of configuration requirements, i.e., any(...).

All(Vec<Cfg>)

Intersection of a list of configuration requirements, i.e., all(...).

Implementations

impl Cfg

fn parse_nested(nested_cfg: &NestedMetaItem) -> Result<Cfg, InvalidCfgError>

Parses a NestedMetaItem into a Cfg.

pub fn parse(cfg: &MetaItem) -> Result<Cfg, InvalidCfgError>

Parses a MetaItem into a Cfg.

The MetaItem should be the content of the #[cfg(...)], e.g., unix or target_os = "redox".

If the content is not properly formatted, it will return an error indicating what and where the error is.

pub fn matches(
    &self,
    parse_sess: &ParseSess,
    features: Option<&Features>
) -> bool

Checks whether the given configuration can be matched in the current session.

Equivalent to attr::cfg_matches.

fn is_simple(&self) -> bool

Whether the configuration consists of just Cfg or Not.

fn is_all(&self) -> bool

Whether the configuration consists of just Cfg, Not or All.

pub(crate) fn render_short_html(&self) -> String

Renders the configuration for human display, as a short HTML description.

pub(crate) fn render_long_html(&self) -> String

Renders the configuration for long display, as a long HTML description.

fn should_capitalize_first_letter(&self) -> bool

fn should_append_only_to_description(&self) -> bool

fn should_use_with_in_description(&self) -> bool

Trait Implementations

impl BitAnd<Cfg> for Cfg

type Output = Cfg

The resulting type after applying the & operator.

fn bitand(self, other: Cfg) -> Cfg

Performs the & operation.

impl BitAndAssign<Cfg> for Cfg

fn bitand_assign(&mut self, other: Cfg)

Performs the &= operation.

impl BitOr<Cfg> for Cfg

type Output = Cfg

The resulting type after applying the | operator.

fn bitor(self, other: Cfg) -> Cfg

Performs the | operation.

impl BitOrAssign<Cfg> for Cfg

fn bitor_assign(&mut self, other: Cfg)

Performs the |= operation.

impl Clone for Cfg

fn clone(&self) -> Cfg

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Cfg

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Cfg

impl Hash for Cfg

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given [Hasher].

impl Not for Cfg

type Output = Cfg

The resulting type after applying the ! operator.

fn not(self) -> Cfg

Performs the unary ! operation.

impl PartialEq<Cfg> for Cfg

fn eq(&self, other: &Cfg) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Cfg) -> bool

This method tests for !=.

impl StructuralEq for Cfg

impl StructuralPartialEq for Cfg