Struct Error 

pub struct Error {
    pub kind: ErrorKind,
    pub(crate) span: Option<Span>,
}

Fields

kind: ErrorKind

span: Option<Span>

Implementations

impl Error

pub fn with_span(self, span: Span) -> Self

Adds a [struct Span] to this Error, if there isn’t already a more specific one.

pub fn kind(&self) -> &ErrorKind

pub fn Return(value: ConValue) -> Self

Propagate a Return value

pub fn Break(value: ConValue) -> Self

Propagate a Break value

pub fn BadBreak(value: ConValue) -> Self

Break propagated across function bounds

pub fn Continue() -> Self

Continue to the next iteration of a loop

pub fn StackUnderflow() -> Self

Underflowed the stack

pub fn StackOverflow(place: usize) -> Self

Overflowed the stack

pub fn ScopeExit() -> Self

Exited the last scope

pub fn TypeError(want: &'static str, got: &'static str) -> Self

Type incompatibility

pub fn NotIterable() -> Self

In clause of For loop didn’t yield a Range

pub fn NotIndexable() -> Self

A value could not be indexed

pub fn OobIndex(index: usize, length: usize) -> Self

An array index went out of bounds

pub fn NotPlace() -> Self

An expression in place position is not a place-expression

pub fn NotDefined(name: Symbol) -> Self

A name was not defined in scope before being used

pub fn NotInitialized(name: Symbol) -> Self

A name was defined but not initialized

pub fn NotCallable(value: ConValue) -> Self

A value was called, but is not callable

pub fn ArgNumber(want: usize, got: usize) -> Self

A function was called with the wrong number of arguments

pub fn PatFailed(pat: Box<Pat>) -> Self

A pattern failed to match

pub fn MatchNonexhaustive(value: ConValue) -> Self

Fell through a non-exhaustive match

pub fn Panic(msg: String) -> Self

Explicit panic

pub fn BuiltinError(msg: impl ToString) -> Self

Error produced by a Builtin

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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.