Enum GeopError 

pub enum GeopError {
    Root {
        message: String,
        backtrace: Arc<Backtrace>,
    },
    Context {
        inner: Box<GeopError>,
        message: String,
    },
    Argument {
        inner: Box<GeopError>,
        key: String,
    },
}

An error: what went wrong at the root, and the context it was reported through. A copy of one is the same error — a step’s failure kept with what it built, and reported again with more context — so the backtrace is shared, not captured again.

Variants

Root

Fields

message: String

backtrace: Arc<Backtrace>

Context

inner, reported through a frame that says what was being done: one line of the chain that GeopError::with_context builds.

Fields

inner: Box<GeopError>

message: String

Argument

inner, caused by the argument key of the step it was raised in: what an editor shows the error beside — the field of that key (see GeopError::concerning).

Fields

inner: Box<GeopError>

key: String

Implementations

impl GeopError

pub fn new(message: impl Into<String>) -> Self

Create a root error. Captures a backtrace at the call site.

pub fn with_context(self, message: impl Into<String>) -> Self

Wrap this error in a Context frame with a string message.

pub fn concerning(self, key: impl Into<String>) -> Self

Caused by the argument key of the step it is raised in — its sketch, its distance — by a value that argument holds or an element it refers to: an editor shows it beside that argument’s field.

pub fn argument(&self) -> Option<&str>

The argument it was caused by (see GeopError::concerning): the outermost one said, which the step that failed said — an argument of a step it read from is that step’s.

pub fn root_message(&self) -> &str

What went wrong at the root, without the context it was reported through: what a user is shown.

Trait Implementations

impl Clone for GeopError

fn clone(&self) -> GeopError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GeopError

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

Formats the value using the given formatter.

impl Display for GeopError

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

Formats the value using the given formatter.

impl Error for GeopError

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.

impl From<&str> for GeopError

fn from(message: &str) -> Self

Converts to this type from the input type.

impl From<GeopError> for EncloseError

fn from(e: GeopError) -> Self

Converts to this type from the input type.

impl From<String> for GeopError

fn from(message: String) -> Self

Converts to this type from the input type.

impl PartialEq for GeopError

Two errors are the same when they say the same: their messages, root and context — not where they were captured.

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.