Enum EngineError 

pub enum EngineError {
    Binding {
        node: String,
        span: Option<ByteSpan>,
        fault: BindingFault,
    },
    UnknownNode(String),
    AmbiguousNode(String, Vec<String>),
    RefAboveRoot(String, String),
    UnknownBuiltin(String),
    BadArity(String),
    Refused(Box<Diagnostic>),
    UnresolvedBars(Located),
}

Variants

Binding

Fields

node: String

span: Option<ByteSpan>

fault: BindingFault

UnknownNode(String)

AmbiguousNode(String, Vec<String>)

RefAboveRoot(String, String)

UnknownBuiltin(String)

BadArity(String)

Refused(Box<Diagnostic>)

A type, cast or ref refusal, already written in the shape section 16 states.

UnresolvedBars(Located)

A bar is a duration this graph never resolved; the tempo pass runs above the engine.

Implementations

impl EngineError

pub fn code(&self) -> &str

pub fn at(&self) -> Option<&Located>

Which node a refusal points at, where one is known.

pub fn refused(d: Diagnostic) -> EngineError

pub fn of_closed_form( r: &Refusal, at: Located, help: impl Into<String>, ) -> EngineError

A closed form refusal already names its blocking subterm by Origin; the caller resolves that to a node and a span before it reaches here.

Trait Implementations

impl Clone for EngineError

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

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, f: &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 PartialEq for EngineError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for EngineError