Struct FunctionQuery 

pub struct FunctionQuery<'a> {
    pub name: Option<Cow<'a, str>>,
    pub module_name: Filter<Cow<'a, str>>,
    pub type_query: Filter<TypeQuery<'a>>,
    pub visibility: Option<Visibility>,
    pub inputs: Parameters<'a>,
    pub outputs: Parameters<'a>,
    pub meta: Filter<FunctionMetaQuery>,
}

Search filter for functions in a crate::registry::Registry.

Every field is optional and an empty query matches everything.

Three of the fields are a Filter rather than an Option, because the signature’s own field is optional and a query must be able to ask for its absence. type_query: Filter::Absent asks for a free function, not a method, which an Option cannot express.

// A free function called `add`, taking exactly two parameters.
let query = FunctionQuery {
    name: Some("add".into()),
    module_name: Filter::Matching("lib".into()),
    type_query: Filter::Absent,
    inputs: Parameters::Exact(vec![Default::default(), Default::default()].into()),
    ..Default::default()
};

Fields

name: Option<Cow<'a, str>>

Required function name.

module_name: Filter<Cow<'a, str>>

Filter on the module the function belongs to.

type_query: Filter<TypeQuery<'a>>

Filter on the type the function is a method of.

visibility: Option<Visibility>

Required visibility.

inputs: Parameters<'a>

Filter on the argument list.

outputs: Parameters<'a>

Filter on the result list.

meta: Filter<FunctionMetaQuery>

Predicate the function metadata must satisfy.

Implementations

impl FunctionQuery<'_>

pub fn is_valid(&self, signature: &FunctionSignature) -> bool

Returns true when signature satisfies every set field.

pub fn as_hash(&self) -> u64

Hashes the query, which is the key the registry caches results under.

pub fn to_static(&self) -> FunctionQuery<'static>

Copies borrowed names into owned ones, so the query can outlive them.

Trait Implementations

impl<'a> Clone for FunctionQuery<'a>

fn clone(&self) -> FunctionQuery<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for FunctionQuery<'a>

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

Formats the value using the given formatter.

impl<'a> Default for FunctionQuery<'a>

fn default() -> FunctionQuery<'a>

Returns the “default value” for a type.

impl<'a> Hash for FunctionQuery<'a>

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<'a> PartialEq for FunctionQuery<'a>

fn eq(&self, other: &FunctionQuery<'a>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<'a> StructuralPartialEq for FunctionQuery<'a>