Enum CfgExpr

pub enum CfgExpr {
    Not(Box<CfgExpr>),
    All(Vec<CfgExpr>),
    Any(Vec<CfgExpr>),
    Value(Cfg),
}

A cfg expression.

Variants

Not(Box<CfgExpr>)

All(Vec<CfgExpr>)

Any(Vec<CfgExpr>)

Value(Cfg)

Implementations

impl CfgExpr

pub fn matches_key(key: &str, target_cfg: &[Cfg]) -> bool

Utility function to check if the key, “cfg(..)” matches the target_cfg

pub fn matches(&self, cfg: &[Cfg]) -> bool

Trait Implementations

impl Clone for CfgExpr

fn clone(&self) -> CfgExpr

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for CfgExpr

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

Formats the value using the given formatter.

impl Display for CfgExpr

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

Formats the value using the given formatter.

impl FromStr for CfgExpr

type Err = ParseError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<CfgExpr, Self::Err>

Parses a string s to return a value of this type.

impl Hash for CfgExpr

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, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for CfgExpr

fn cmp(&self, other: &CfgExpr) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for CfgExpr

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for CfgExpr

fn partial_cmp(&self, other: &CfgExpr) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for CfgExpr

impl StructuralPartialEq for CfgExpr

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: 48 bytes

Size for each variant:

• Not: 16 bytes
• All: 32 bytes
• Any: 32 bytes
• Value: 48 bytes