Function parse_def

src/expr-parser/src/parser.rs:1433–1435

(ctx: CtxRef, input: ParseStream)

    use super::*;

    pub fn parse_def(ctx: CtxRef, input: ParseStream) -> syn::Result<Def> {
        parse_def_source(ctx, input) // only one variant for now
    }

    fn parse_def_source(ctx: CtxRef, input: ParseStream) -> syn::Result<Def> {
        let reduce = input.parse::<def::DefSource>()?;