Merge #4358

4358: add if let and while let postfix for Option and Result #4348 r=matklad a=bnjjj

close #4348 

I also added `while let` for iterator or stream it could be useful 

![iflet](https://user-images.githubusercontent.com/5719034/81278000-676c6b80-9055-11ea-87ad-6b8476dd983f.gif)


Co-authored-by: Benjamin Coenen <[email protected]>

1 files changed, 2 insertions, 2 deletions

diff --git a/crates/ra_assists/src/utils.rs b/crates/ra_assists/src/utils.rs
index 2f15a3f15..f3fc92ebf 100644
--- a/crates/ra_assists/src/utils.rs
+++ b/crates/ra_assists/src/utils.rs
@@ -103,7 +103,7 @@ fn invert_special_case(expr: &ast::Expr) -> Option<ast::Expr> {
 }
 
 #[derive(Clone, Copy)]
-pub(crate) enum TryEnum {
+pub enum TryEnum {
     Result,
     Option,
 }
@@ -111,7 +111,7 @@ pub(crate) enum TryEnum {
 impl TryEnum {
     const ALL: [TryEnum; 2] = [TryEnum::Option, TryEnum::Result];
 
-    pub(crate) fn from_ty(sema: &Semantics<RootDatabase>, ty: &Type) -> Option<TryEnum> {
+    pub fn from_ty(sema: &Semantics<RootDatabase>, ty: &Type) -> Option<TryEnum> {
         let enum_ = match ty.as_adt() {
             Some(Adt::Enum(it)) => it,
             _ => return None,