From d2c13e6f22bb5a116f189c348213e2a45e439df6 Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Sat, 24 Apr 2021 12:57:12 +0200
Subject: Add support for Option<T>

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
---
 src/backend/mod.rs | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

(limited to 'src/backend/mod.rs')

diff --git a/src/backend/mod.rs b/src/backend/mod.rs
index 1353a6d..3f72d66 100644
--- a/src/backend/mod.rs
+++ b/src/backend/mod.rs
@@ -1,8 +1,8 @@
 pub mod dialoguer;
 
-use crate::ValueBuilder;
 use crate::BuildableValue;
 use crate::CollectionBuilder;
+use crate::ValueBuilder;
 
 /// A backend can be used to get builders for specific types
 pub trait Backend {
@@ -26,9 +26,10 @@ pub trait Backend {
     fn char_builder(&self)   -> Box<dyn ValueBuilder<Output = char, Error = Self::Error>>;
     fn string_builder(&self) -> Box<dyn ValueBuilder<Output = String, Error = Self::Error>>;
 
+    fn option_builder<T: 'static + BuildableValue>(&self) -> Box<dyn CollectionBuilder<Output = Option<T>, Error = Self::Error>>;
+
     fn vec_builder<T>(&self) -> Box<dyn CollectionBuilder<Output = Vec<T>, Error = Self::Error>>
-        where T: 'static + BuildableValue
-            ;
+        where T: 'static + BuildableValue;
 }
 
 
-- 
cgit v1.2.3