hir_expand::span_map

Type Alias ExpansionSpanMap

source 
pub type ExpansionSpanMap = SpanMap<SyntaxContextId>;

Aliased Type§

struct ExpansionSpanMap {
    pub matched_arm: Option<u32>,
    /* private fields */
}

Fields§

§matched_arm: Option<u32>

Index of the matched macro arm on successful expansion for declarative macros.