Type Alias ExtEvalError 

pub type ExtEvalError = EvalError;

Re-exported tatara_lisp_eval::EvalError. Host intrinsics return this for type mismatches / runtime errors.

Aliased Type

pub enum ExtEvalError {
    UnboundSymbol {
        name: Arc<str>,
        at: Span,
    },
    ArityMismatch {
        fn_name: Arc<str>,
        expected: Arity,
        got: usize,
        at: Span,
    },
    TypeMismatch {
        expected: &'static str,
        got: &'static str,
        at: Span,
    },
    DivisionByZero {
        at: Span,
    },
    NotCallable {
        value_kind: &'static str,
        at: Span,
    },
    BadSpecialForm {
        form: Arc<str>,
        reason: String,
        at: Span,
    },
    NativeFn {
        name: Arc<str>,
        reason: String,
        at: Span,
    },
    Reader(LispError),
    Halted,
    NotImplemented(&'static str),
    User {
        value: Value,
        at: Span,
    },
}

Variants

UnboundSymbol

Fields

name: Arc<str>

at: Span

ArityMismatch

Fields

fn_name: Arc<str>

expected: Arity

got: usize

at: Span

TypeMismatch

Fields

expected: &'static str

got: &'static str

at: Span

DivisionByZero

Fields

at: Span

NotCallable

Fields

value_kind: &'static str

at: Span

BadSpecialForm

Fields

form: Arc<str>

reason: String

at: Span

NativeFn

Fields

name: Arc<str>

reason: String

at: Span

Reader(LispError)

Halted

NotImplemented(&'static str)

User

A Lisp-side error raised via (throw ...). Caught by (try ... (catch (e) ...)). The carried Value is whatever the user threw — conventionally a Value::Error produced by (error ...) / (ex-info ...), but any Value is allowed.

Fields

value: Value

at: Span