Function collect_function_args

nodedb-sql/src/resolver/expr/functions.rs:134–158

Collect function call arguments, converting each `Expr` to `SqlExpr`.

(func: &ast::Function, depth: &mut usize)

/// Collect function call arguments, converting each `Expr` to `SqlExpr`.
fn collect_function_args(func: &ast::Function, depth: &mut usize) -> Result<Vec<SqlExpr>> {
    match &func.args {
        ast::FunctionArguments::None => Ok(Vec::new()),
        ast::FunctionArguments::Subquery(_) => Err(SqlError::Unsupported {
            detail: "subquery in function args".into(),
        }),
        ast::FunctionArguments::List(arg_list) => arg_list
            .args
            .iter()
            .filter_map(|a| match a {
                ast::FunctionArg::Unnamed(ast::FunctionArgExpr::Expr(e)) => {
                    Some(convert_expr_depth(e, depth))
                }
                ast::FunctionArg::Unnamed(ast::FunctionArgExpr::Wildcard) => {
                    Some(Ok(SqlExpr::Wildcard))
                }
                ast::FunctionArg::Named {
                    arg: ast::FunctionArgExpr::Expr(e),
                    ..
                } => Some(convert_expr_depth(e, depth)),
                _ => None,
            })
            .collect::<Result<Vec<_>>>(),
    }
}