Enum LookupError

pub enum LookupError {
    DoesNotExist {
        identifier: String,
    },
    TypeMismatch {
        expected: String,
        actual: String,
        is_concrete: bool,
    },
}

The error type for lookup operations on the AST.

Variants

DoesNotExist

No AST node exists that corresponds to the provided identifier.

Fields

identifier: String

The (possibly scoped) identifier that was looked up.

TypeMismatch

An AST node with the provided identifier exists, but the element stored in it wasn’t of the specified type.

Fields

expected: String

The type that the caller was expecting to find.

actual: String

The type that was actually stored in the AST node.

is_concrete: bool

Whether the expected type was concrete or a trait. This is used to change the wording of the error message.

Trait Implementations

impl Debug for LookupError

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

Formats the value using the given formatter.