Enum UpcallError 

pub enum UpcallError {
    Argument(LineCol, String),
    Eval(LineCol, String),
    IoError(LineCol, String),
    Precondition(LineCol, String),
    Syntax(LineCol, String),
}

Error type for uncaught upcall failures.

This should be the same as CallError but with all error variants annotated with a position.

Variants

Argument(LineCol, String)

Invalid callable argument at a given source location.

Eval(LineCol, String)

Runtime evaluation error at a given source location.

IoError(LineCol, String)

I/O error at a given source location.

Precondition(LineCol, String)

Callable precondition failure at a given source location.

Syntax(LineCol, String)

Runtime syntax error at a specific source location.

Implementations

impl UpcallError

pub fn parts(&self) -> (LineCol, String)

Returns the source position and message of this error.

Trait Implementations

impl Debug for UpcallError

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

Formats the value using the given formatter.

impl Display for UpcallError

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

Formats the value using the given formatter.

impl Error for UpcallError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.