Struct tvix_eval::value::function::Formals

pub(crate) struct Formals {
    pub(crate) arguments: BTreeMap<NixString, bool>,
    pub(crate) ellipsis: bool,
    pub(crate) span: Span,
    pub(crate) name: Option<String>,
}

Fields

arguments: BTreeMap<NixString, bool>

Map from argument name, to whether that argument is required

ellipsis: bool

Do the formals of this function accept extra arguments

span: Span

The span of the formals themselves, to use to emit errors

name: Option<String>

Optionally tracks a name for all function arguments (args@ style). Used by toXML.

Implementations

impl Formals

pub(crate) fn contains<Q>(&self, arg: &Q) -> bool

where Q: ?Sized + Hash + Ord + Eq, NixString: Borrow<Q>,

Returns true if the given arg is a valid argument to these formals.

This is true if it is either listed in the list of arguments, or the formals have an ellipsis

Trait Implementations

impl Clone for Formals

fn clone(&self) -> Formals

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Formals

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

Formats the value using the given formatter.

impl PartialEq for Formals

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

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

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

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

impl StructuralPartialEq for Formals