Impl FromLua for RegistryKey

Author: khvzak

src/conversion.rs

@@ -441,6 +441,13 @@ impl<'lua> IntoLua<'lua> for &RegistryKey {
     }
 }
 
+impl<'lua> FromLua<'lua> for RegistryKey {
+    #[inline]
+    fn from_lua(value: Value<'lua>, lua: &'lua Lua) -> Result<RegistryKey> {
+        lua.create_registry_value(value)
+    }
+}
+
 impl<'lua> IntoLua<'lua> for bool {
     #[inline]
     fn into_lua(self, _: &'lua Lua) -> Result<Value<'lua>> {

tests/conversion.rs

@@ -3,7 +3,10 @@ use std::collections::{BTreeMap, BTreeSet, HashMap, HashSet};
 use std::ffi::{CStr, CString};
 
 use maplit::{btreemap, btreeset, hashmap, hashset};
-use mlua::{AnyUserData, Error, Function, IntoLua, Lua, Result, Table, Thread, UserDataRef, Value};
+use mlua::{
+    AnyUserData, Error, Function, IntoLua, Lua, RegistryKey, Result, Table, Thread, UserDataRef,
+    Value,
+};
 
 #[test]
 fn test_value_into_lua() -> Result<()> {
@@ -254,6 +257,17 @@ fn test_registry_value_into_lua() -> Result<()> {
     Ok(())
 }
 
+#[test]
+fn test_registry_key_from_lua() -> Result<()> {
+    let lua = Lua::new();
+
+    let fkey = lua.load("function() return 1 end").eval::<RegistryKey>()?;
+    let f = lua.registry_value::<Function>(&fkey)?;
+    assert_eq!(f.call::<_, i32>(())?, 1);
+
+    Ok(())
+}
+
 #[test]
 fn test_conv_vec() -> Result<()> {
     let lua = Lua::new();