Enum GuardKind 

pub enum GuardKind {
    IfLet {
        lhs: Pat,
        rhs: Expr,
    },
}

Represents the various kinds of pattern guards.

Variants

IfLet

An if let guard.

Example:

match x {
  Some(value) if let Some(x) = f(value) => x,
  _ => ...,
}

Fields

lhs: Pat

The left-hand side of the guard. Some(x) in the example.

rhs: Expr

The right-hand side of the guard. f(value) in the example.

Trait Implementations

impl AnyFragment for GuardKind

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 GuardKind

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 GuardKind

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 GuardKind

fn clone(&self) -> GuardKind

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GuardKind

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for GuardKind

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 GuardKind

where V: Visitor + Visit<'s, Pat> + Visit<'s, Expr>,

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 GuardKind

where V: Visitor + VisitMut<'s, Pat> + VisitMut<'s, Expr>,

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 GuardKind

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

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

Converts to this type from the input type.

impl From<GuardKind> for Fragment

fn from(fragment: GuardKind) -> Self

Converts to this type from the input type.

impl Hash for GuardKind

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 GuardKind

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 GuardKind

fn cmp(&self, other: &GuardKind) -> 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 GuardKind

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for GuardKind

fn partial_cmp(&self, other: &GuardKind) -> 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 GuardKind

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 GuardKind