Enum SymExprKind 

pub enum SymExprKind<'db> {
    Semi(SymExpr<'db>, SymExpr<'db>),
    Tuple(Vec<SymExpr<'db>>),
    Primitive(SymLiteral),
    ByteLiteral(SymByteLiteral<'db>),
    LetIn {
        lv: SymVariable<'db>,
        ty: SymTy<'db>,
        initializer: Option<SymExpr<'db>>,
        body: SymExpr<'db>,
    },
    Await {
        future: SymExpr<'db>,
        await_keyword: Span<'db>,
    },
    Assign {
        place: SymPlaceExpr<'db>,
        value: SymExpr<'db>,
    },
    PermissionOp(PermissionOp, SymPlaceExpr<'db>),
    Call {
        function: SymFunction<'db>,
        substitution: Vec<SymGenericTerm<'db>>,
        arg_temps: Vec<SymVariable<'db>>,
    },
    Return(SymExpr<'db>),
    Not {
        operand: SymExpr<'db>,
        op_span: Span<'db>,
    },
    BinaryOp(SymBinaryOp, SymExpr<'db>, SymExpr<'db>),
    Aggregate {
        ty: SymTy<'db>,
        fields: Vec<SymExpr<'db>>,
    },
    Match {
        arms: Vec<SymMatchArm<'db>>,
    },
    Error(Reported),
}

Variants

Semi(SymExpr<'db>, SymExpr<'db>)

$expr1; $expr2

Tuple(Vec<SymExpr<'db>>)

(...)

Primitive(SymLiteral)

22 etc

ByteLiteral(SymByteLiteral<'db>)

b"..."

LetIn

let $lv: $ty [= $initializer] in $body

Fields

lv: SymVariable<'db>

ty: SymTy<'db>

initializer: Option<SymExpr<'db>>

body: SymExpr<'db>

Await

future.await

Fields

future: SymExpr<'db>

await_keyword: Span<'db>

Assign

$place = $expr

Fields

place: SymPlaceExpr<'db>

value: SymExpr<'db>

PermissionOp(PermissionOp, SymPlaceExpr<'db>)

$0.lease etc

Call

$0[$1..]($2..)

During construction we ensure that the arities match and terms are well-kinded (or generate errors).

Fields

function: SymFunction<'db>

substitution: Vec<SymGenericTerm<'db>>

arg_temps: Vec<SymVariable<'db>>

Return(SymExpr<'db>)

Return a value from this function

Not

Boolean not

Fields

operand: SymExpr<'db>

op_span: Span<'db>

BinaryOp(SymBinaryOp, SymExpr<'db>, SymExpr<'db>)

a + b etc

Aggregate

Something like Point { x: ..., y: ... }

Fields

ty: SymTy<'db>

fields: Vec<SymExpr<'db>>

Match

Match, if/else-if chain, etc

Fields

arms: Vec<SymMatchArm<'db>>

Error(Reported)

Error occurred somewhere.

Trait Implementations

impl<'db> Clone for SymExprKind<'db>

fn clone(&self) -> SymExprKind<'db>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'db> Debug for SymExprKind<'db>

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

Formats the value using the given formatter.

impl<'db> Hash for SymExprKind<'db>

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<'db> Ord for SymExprKind<'db>

fn cmp(&self, other: &SymExprKind<'db>) -> 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<'db> PartialEq for SymExprKind<'db>

fn eq(&self, other: &SymExprKind<'db>) -> 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<'db> PartialOrd for SymExprKind<'db>

fn partial_cmp(&self, other: &SymExprKind<'db>) -> 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<'db> Serialize for SymExprKind<'db>

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<'db> Subst<'db> for SymExprKind<'db>

type GenericTerm = SymGenericTerm<'db>

The notion of generic term appropriate for this type. When we substitute variables, this is the type of value that we replace them with.

fn subst_vars( &self, db: &'db dyn Db, map: &Map<SymVariable<'db>, Self::GenericTerm>, ) -> Self::Output

Returns a version of self where universal free variables have been replaced by the corresponding entry in terms. If a variable is not present in terms it is not substituted.

fn subst_var( &self, db: &'db dyn Db, var: SymVariable<'db>, term: Self::GenericTerm, ) -> Self::Output

Replace the variable var with term.

fn resolve_infer_var( &self, db: &'db dyn Db, bound_vars: &mut Vec<SymVariable<'db>>, op: impl FnMut(InferVarIndex) -> Option<Self::GenericTerm>, ) -> Self::Output

Replace all inference variables with whatever is returned by op; if op returns None, the inference variable is left unchanged.

impl<'db> SubstWith<'db, SymGenericTerm<'db>> for SymExprKind<'db>

type Output = SymExprKind<'db>

The type of the resulting term; typically Self but not always.

fn identity(&self) -> Self::Output

Reproduce self with no edits.

fn subst_with<'subst>( &'subst self, db: &'db dyn Db, bound_vars: &mut Vec<SymVariable<'db>>, subst_fns: &mut SubstitutionFns<'_, 'db, SymGenericTerm<'db>>, ) -> Self::Output

Replace self applying the changes from subst_fns.

impl<'db> Update for SymExprKind<'db>

unsafe fn maybe_update(old_pointer_: *mut Self, new_value_: Self) -> bool

Returns

impl<'db> Eq for SymExprKind<'db>

impl<'db> StructuralPartialEq for SymExprKind<'db>