let MatchSource::IfLetDesugar { .. } = *source, //test if it is an If Let
let ExprMethodCall(_, _, ref result_types) = op.node, //check is expr.ok() has type Result<T,E>.ok()
let PatKind::TupleStruct(ref x, ref y, _) = body[0].pats[0].node, //get operation
- let Some(some_expr_string) = snippet_opt(cx, y[0].span),
let Some(_) = method_chain_args(op, &["ok"]) //test to see if using ok() methoduse std::marker::Sized;
], {
let is_result_type = match_type(cx, cx.tcx.expr_ty(&result_types[0]), &paths::RESULT);
+ let mut some_expr_string = String::from("");
+ if y.len() > 0 {
+ if let Some(x) = snippet_opt(cx, y[0].span) {
+ some_expr_string = x;
+ }
+ }
if print::path_to_string(x) == "Some" && is_result_type {
span_help_and_lint(cx, IF_LET_SOME_RESULT, expr.span,
"Matching on `Some` with `ok()` is redundant",