pub enum Expr {
    Term(TypeIdTermIdVec<Expr>),
    Var(TypeIdVarId),
    ConstInt(TypeIdi64),
    ConstPrim(TypeIdSym),
    Let {
        ty: TypeId,
        bindings: Vec<(VarId, TypeId, Box<Expr>)>,
        body: Box<Expr>,
    },
}
Expand description

A right-hand side expression of some rule.

Variants

Term(TypeIdTermIdVec<Expr>)

Invoke this term constructor with the given arguments.

Var(TypeIdVarId)

Get the value of a variable that was bound in the left-hand side.

ConstInt(TypeIdi64)

Get a constant integer.

ConstPrim(TypeIdSym)

Get a constant primitive.

Let

Fields

ty: TypeId

The type of the result of this let expression.

bindings: Vec<(VarId, TypeId, Box<Expr>)>

The expressions that are evaluated and bound to the given variables.

body: Box<Expr>

The body expression that is evaluated after the bindings.

Evaluate the nested expressions and bind their results to the given variables, then evaluate the body expression.

Implementations

Get this expression’s type.

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.