add alloc feature to serde_at (FactbirdHQ#192)

TuEmb · Dec 11, 2023 · 23d9c18 · 23d9c18
1 parent 3af3d58
commit 23d9c18
Show file tree

Hide file tree

Showing 2 changed files with 10 additions and 2 deletions.
diff --git a/serde_at/Cargo.toml b/serde_at/Cargo.toml
@@ -29,3 +29,4 @@ default = []
 custom-error-messages = []
 std = []
 hex_str_arrays = []
+alloc = ["serde/alloc"]
diff --git a/serde_at/src/de/mod.rs b/serde_at/src/de/mod.rs
@@ -483,12 +483,19 @@ impl<'a, 'de> de::Deserializer<'de> for &'a mut Deserializer<'de> {
         }
     }
 
-    /// Unsupported. String is not available in no-std.
+    /// Supported only if alloc feature is enabled
     fn deserialize_string<V>(self, _visitor: V) -> Result<V::Value>
     where
         V: Visitor<'de>,
     {
-        unreachable!()
+        #[cfg(feature = "alloc")]
+        {
+            self.deserialize_str(_visitor)
+        }
+        #[cfg(not(feature = "alloc"))]
+        {
+            unreachable!()
+        }
     }
 
     fn deserialize_bytes<V>(self, visitor: V) -> Result<V::Value>