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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", so this trait is not object safe.

Implementors§