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UnionParseError

eure_document::parse

Trait UnionParseError 

Source 
pub trait UnionParseError: From<ParseError> {
    // Required method
    fn as_parse_error(&self) -> Option<&ParseError>;

    // Provided method
    fn from_no_matching_variant(
        node_id: NodeId,
        variant: Option<String>,
        best_match: Option<BestParseVariantMatch>,
        _failures: &[(String, Self)],
    ) -> Self { ... }
}
Expand description

Additional behavior required by ParseContext::parse_union.

Union parsing needs to synthesize a “no matching variant” error after all variants have been tried. Some callers want that as a plain ParseError, while others use a higher-level error type and treat it as a control signal.

Required Methods§

Source

fn as_parse_error(&self) -> Option<&ParseError>

Returns the underlying ParseError when one exists.

Provided Methods§

Source

fn from_no_matching_variant( node_id: NodeId, variant: Option<String>, best_match: Option<BestParseVariantMatch>, _failures: &[(String, Self)], ) -> Self

Constructs the error returned when no union variant matches.

Dyn Compatibility§

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors§