Enum ImplExprKind 

pub enum ImplExprKind {
    Self_,
    Concrete(TraitGoal),
    LocalBound {
        id: Symbol,
    },
    Parent {
        impl_: ImplExpr,
        ident: ImplIdent,
    },
    Projection {
        impl_: ImplExpr,
        item: GlobalId,
        ident: ImplIdent,
    },
    ImplApp {
        impl_: ImplExpr,
        args: Vec<ImplExpr>,
    },
    Dyn,
    Builtin(TraitGoal),
    Error(ErrorNode),
}

Represents all the kinds of impl expr.

Example:

In the snippet below, the clone method on x corresponds to the implementation of Clone derived for Vec<T> (ImplApp) given the LocalBound on T.

fn f<T: Clone>(x: Vec<T>) -> Vec<T> {
  x.clone()
}

Variants

Self_

The trait implementation being defined.

Example:

The impl expr for Type: Trait used in self.f() is Self_.

impl Trait for Type {
    fn f(&self) {...}
    fn g(&self) {self.f()}
}

Concrete(TraitGoal)

A concrete impl block.

Example

impl Clone for Type { // Consider this `impl` is called `impl0`
    ...
}
fn f(x: Type) {
    x.clone() // Here `clone` comes from `Concrete(impl0)`
}

LocalBound

A bound introduced by a generic clause.

Example:

fn f<T: Clone>(x: T) -> T {
  x.clone() // Here the method comes from the bound `T: Clone`
}

Fields

id: Symbol

Local identifier to a bound.

Parent

A parent implementation.

Example:

trait SubTrait: Clone {}
fn f<T: SubTrait>(x: T) -> T {
  x.clone() // Here the method comes from the parent of the bound `T: SubTrait`
}

Fields

impl_: ImplExpr

Parent implementation

ident: ImplIdent

Which implementation to pick in the parent

Projection

A projected associated implementation.

Example:

In this snippet, T::Item is an AssociatedType where the subsequent ImplExpr is a type projection of ITerator.

fn f<T: Iterator>(x: T) -> Option<T::Item> {
    x.next()
}

Fields

impl_: ImplExpr

The base implementation from which we project

item: GlobalId

The item in the trait implemented by impl_

ident: ImplIdent

Which implementation to pick on the item

ImplApp

An instantiation of a generic implementation.

Example:

fn f<T: Clone>(x: Vec<T>) -> Vec<T> {
  x.clone() // The `Clone` implementation for `Vec` is instantiated with the local bound `T: Clone`
}

Fields

impl_: ImplExpr

The head of the application

args: Vec<ImplExpr>

The arguments of the application

Dyn

The implementation provided by a dyn.

Builtin(TraitGoal)

A trait implemented natively by rust.

Error(ErrorNode)

Fallback constructor to carry errors.

Trait Implementations

impl AnyFragment for ImplExprKind

fn type_id() -> FragmentTypeId

Get a type identifier for this fragment.

fn as_fragment<'a>(&'a self, type_id: FragmentTypeId) -> Option<FragmentRef<'a>>

Coerce as a fragment reference.

fn as_owned_fragment(&self, type_id: FragmentTypeId) -> Option<Fragment>

Coerce as an owned fragment.

impl AstVisitable for ImplExprKind

fn drive_map<V: AstVisitorMut>(&mut self, v: &mut V)

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn drive<V: AstVisitor>(&self, v: &mut V)

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

impl AstVisitable for ImplExprKind

fn drive<V: AstEarlyExitVisitor>(&self, v: &mut V) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

fn drive_mut<V: AstEarlyExitVisitorMut>( &mut self, v: &mut V, ) -> ControlFlow<V::Break>

Recursively visit this type with the provided visitor. This calls the visitor’s visit_$any method if it exists, otherwise visit_inner.

impl Clone for ImplExprKind

fn clone(&self) -> ImplExprKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ImplExprKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ImplExprKind

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<'s, V> Drive<'s, V> for ImplExprKind

where V: Visitor + Visit<'s, TraitGoal> + Visit<'s, Symbol> + Visit<'s, ImplExpr> + Visit<'s, ImplIdent> + Visit<'s, GlobalId> + Visit<'s, Vec<ImplExpr>> + Visit<'s, ErrorNode>,

fn drive_inner(&'s self, visitor: &mut V) -> ControlFlow<V::Break>

Call v.visit() on the immediate contents of self.

impl<'s, V> DriveMut<'s, V> for ImplExprKind

where V: Visitor + VisitMut<'s, TraitGoal> + VisitMut<'s, Symbol> + VisitMut<'s, ImplExpr> + VisitMut<'s, ImplIdent> + VisitMut<'s, GlobalId> + VisitMut<'s, Vec<ImplExpr>> + VisitMut<'s, ErrorNode>,

fn drive_inner_mut(&'s mut self, visitor: &mut V) -> ControlFlow<V::Break>

Call v.visit() on the immediate contents of self.

impl Eq for ImplExprKind

impl<'lt> From<&'lt ImplExprKind> for FragmentRef<'lt>

fn from(fragment: &'lt ImplExprKind) -> Self

Converts to this type from the input type.

impl From<ImplExprKind> for Fragment

fn from(fragment: ImplExprKind) -> Self

Converts to this type from the input type.

impl Hash for ImplExprKind

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 JsonSchema for ImplExprKind

fn schema_name() -> String

The name of the generated JSON Schema.

fn schema_id() -> Cow<'static, str>

Returns a string that uniquely identifies the schema produced by this type.

fn json_schema(generator: &mut SchemaGenerator) -> Schema

Generates a JSON Schema for this type.

fn is_referenceable() -> bool

Whether JSON Schemas generated for this type should be re-used where possible using the $ref keyword.

impl Ord for ImplExprKind

fn cmp(&self, other: &ImplExprKind) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for ImplExprKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for ImplExprKind

fn partial_cmp(&self, other: &ImplExprKind) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for ImplExprKind

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for ImplExprKind