pub struct TargetExpression { /* private fields */ }
Expand description

A target expression.

Parsed from a string beginning with cfg(.

Implementations

Creates a new TargetExpression from a string beginning with cfg(.

Returns an error if the string could not be parsed, or if the string contains a predicate that wasn’t understood by target-spec.

Returns the string that was parsed into self.

Evaluates this expression against the given platform.

Returns Some(true) if there’s a match, Some(false) if there’s none, or None if the result of the evaluation is unknown (typically found if target features are involved).

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

The associated error which can be returned from parsing.

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

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Performs the conversion.

Performs the conversion.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.