Enum ConvertError 

pub enum ConvertError {
    SourceParse {
        clause_var: String,
        source: String,
        cause: SourceParseError,
    },
    EmptyComprehension,
    EmptyUnionSubspace,
    ParallelArityMismatch {
        vars: usize,
        exprs: usize,
    },
    CustomOrderingRemoved {
        function: String,
    },
}

Errors produced when converting a legacy AST to algebra.

Variants

SourceParse

A clause’s source string didn’t parse to a typed Source.

Fields

clause_var: String

The clause’s element name.

source: String

The source text.

cause: SourceParseError

Why it did not parse.

EmptyComprehension

An empty cartesian or empty union mode.

EmptyUnionSubspace

A union sub-space was empty.

ParallelArityMismatch

A parallel clause’s vars and exprs had mismatched lengths (should be caught by the parser, but defensive here).

Fields

vars: usize

Names bound.

exprs: usize

Expressions given.

CustomOrderingRemoved

Custom traversal order encountered — removed from the algebra per spec §3.6.

Fields

function: String

The function the order named.

Trait Implementations

impl Clone for ConvertError

fn clone(&self) -> ConvertError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ConvertError

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

Formats the value using the given formatter.

impl Display for ConvertError

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

Formats the value using the given formatter.

impl Error for ConvertError

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<ConvertError> for SpecConvertError

fn from(e: ConvertError) -> Self

Converts to this type from the input type.

impl PartialEq for ConvertError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ConvertError