Struct virtue::parse::GenericConstraints

pub struct GenericConstraints { /* private fields */ }

Constraints on generic types.

struct Foo<F>
    where F: Display // These are `GenericConstraints`
{
    f: PhantomData<F>
}

Implementations

impl GenericConstraints

pub fn push_constraint( &mut self, generic: &SimpleGeneric, constraint: impl AsRef<str> ) -> Result<()>

Push the given constraint onto this stream.

let mut generic_constraints = GenericConstraints::parse("T: Foo"); // imaginary function
let mut generic = SimpleGeneric::new("U"); // imaginary function

generic_constraints.push_constraint(&generic, "Bar");

// generic_constraints is now:
// `T: Foo, U: Bar`

pub fn push_parsed_constraint( &mut self, constraint: impl AsRef<str> ) -> Result<()>

Push the given constraint onto this stream.

let mut generic_constraints = GenericConstraints::parse("T: Foo"); // imaginary function

generic_constraints.push_parsed_constraint("u32: SomeTrait");

// generic_constraints is now:
// `T: Foo, u32: SomeTrait`

pub fn clear(&mut self)

Clear the constraints

Trait Implementations

impl Clone for GenericConstraints

fn clone(&self) -> GenericConstraints

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GenericConstraints

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

Formats the value using the given formatter.

impl Default for GenericConstraints

fn default() -> GenericConstraints

Returns the “default value” for a type.