Enum UsageContext 

pub enum UsageContext {
    FieldType,
    ParamType,
    ReturnType,
    LocalVar,
    WhereBound,
    ImplTarget,
    ImplTrait,
    UseStatement,
    Cast,
    Turbofish,
    VariantField,
    ConstType,
    MatchScrutinee,
    ConstructorCall,
    StructLiteral,
}

Context in which a type is used.

Variants

FieldType

Struct field type.

ParamType

Function parameter type.

ReturnType

Return type.

LocalVar

Local variable type annotation.

WhereBound

Where clause or trait bound.

ImplTarget

Impl target (impl Foo).

ImplTrait

Impl trait (impl Trait for Foo).

UseStatement

Use statement.

Cast

Type cast (as Type).

Turbofish

Turbofish (::<Type>).

VariantField

Enum variant field.

ConstType

Const/static type.

MatchScrutinee

Match expression scrutinee (the value being matched). Used to track where enums are matched for cascade analysis.

ConstructorCall

Associated function call: Foo::new(), Foo::default(), etc. Tracks the type referenced by the path prefix of the call.

StructLiteral

Struct literal: Foo { field: value }. Tracks the type being instantiated.

Trait Implementations

impl Clone for UsageContext

fn clone(&self) -> UsageContext

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for UsageContext

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for UsageContext

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for UsageContext

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 PartialEq for UsageContext

fn eq(&self, other: &UsageContext) -> 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 Serialize for UsageContext

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for UsageContext

impl Eq for UsageContext

impl StructuralPartialEq for UsageContext