Struct EngineError 

pub struct EngineError {
    pub class: EngineErrorClass,
    pub message: String,
    pub source: Option<Box<dyn Error + Send + Sync>>,
}

An error reported by an engine across the seam (ADR-0002 / ADR-0009).

Fields

class: EngineErrorClass

Fault classification, folded into CoreError by the dispatcher.

message: String

Human-readable description of the failure.

source: Option<Box<dyn Error + Send + Sync>>

Underlying cause, when one exists.

Implementations

impl EngineError

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

An infrastructure failure (EngineErrorClass::Infra).

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

An assertion failure (EngineErrorClass::AssertFailed).

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

A user-input failure (EngineErrorClass::UserInput).

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

A setup/configuration failure (EngineErrorClass::Setup).

pub fn with_source(self, source: impl Error + Send + Sync + 'static) -> Self

Attach an underlying cause.

Trait Implementations

impl Debug for EngineError

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

Formats the value using the given formatter.

impl Display for EngineError

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

Formats the value using the given formatter.

impl Error for EngineError

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<EngineError> for CoreError

fn from(err: EngineError) -> Self

Fold the engine fault into the core taxonomy (ADR-0009). The cause chain rides along only for system faults — deliberate flattening: assert/user failures carry complete user-facing messages, and their source (when any exists) is engine internals that would only repeat the message.