Implement variable for pointer to variable

src/box_vars.rs

@@ -171,3 +171,59 @@ impl<'render, T: Variable<'render>> Variable<'render> for Arc<T> {
  (**self).iterate_pairs()
  }
 }
+
+impl<'render, T: Variable<'render>> Variable<'render> for &'render T {
+ fn attr<'x>(&'x self, attr: &str)
+ -> Result<Var<'x, 'render>, DataError>
+ where 'render: 'x
+ {
+ (**self).attr(attr)
+ }
+ fn index<'x>(&'x self,
+ key: &(Variable<'render> + 'render))
+ -> Result<Var<'x, 'render>, DataError>
+ where 'render: 'x
+ {
+ (**self).index(key)
+ }
+ fn output(&self) -> Result<Output, DataError> {
+ (**self).output()
+ }
+ fn typename(&self) -> &'static str {
+ return stringify!(#name);
+ }
+ fn as_str_key<'x>(&'x self)
+ -> Result<&'x str, DataError>
+ {
+ (**self).as_str_key()
+ }
+ fn as_int_key(&self) -> Result<usize, DataError> {
+ (**self).as_int_key()
+ }
+ fn as_bool(&self) -> Result<bool, DataError> {
+ (**self).as_bool()
+ }
+ fn as_number(&self) -> Result<Number, DataError> {
+ (**self).as_number()
+ }
+ fn as_comparable(&self) -> Result<Comparable, DataError> {
+ (**self).as_comparable()
+ }
+
+ fn iterate<'x>(&'x self)
+ -> Result<Box<Iterator<Item=
+ Var<'x, 'render>>+'x>,
+ DataError>
+ where 'render: 'x
+ {
+ (**self).iterate()
+ }
+
+ fn iterate_pairs<'x>(&'x self)
+ -> Result<Box<Iterator<Item=(Var<'x, 'render>, Var<'x, 'render>)>+'x>,
+ DataError>
+ where 'render: 'x
+ {
+ (**self).iterate_pairs()
+ }
+}