Function parse_project

src/expr-parser/src/parser.rs:322–332

(ctx: CtxRef, input: ParseStream)

    }

    fn parse_project(ctx: CtxRef, input: ParseStream) -> Result {
        let project = input.parse::<kw::Project>()?;

        let content;
        syn::parenthesized!(content in input);
        let outputs = content.parse_comma_sep(scalar::parse_column_index)?;
        let parse_input = ParseChildren::new(input, project.span().start());
        let input = Box::new(parse_input.parse_one(ctx, parse_expr)?);

        Ok(MirRelationExpr::Project { input, outputs })
    }

    fn parse_map(ctx: CtxRef, input: ParseStream) -> Result {
        let map = input.parse::<kw::Map>()?;