Starting a context for partial parameters.

src/parser/parser.rs

@@ -119,7 +119,7 @@ pub struct Partial<'a> {
 }
 
 #[derive(Clone, Debug, PartialEq)]
-enum RValue<'a> {
+pub enum RValue<'a> {
     RVPath(Path<'a>),
     RVString(String),
 }