Create structure for statistics cookies.

src/parser/object.rs

@@ -25,6 +25,7 @@ pub enum Object<'s> {
     InlineSourceBlock(InlineSourceBlock<'s>),
     LineBreak(LineBreak<'s>),
     Target(Target<'s>),
+    StatisticsCookie(StatisticsCookie<'s>),
 }
 
 #[derive(Debug, PartialEq)]
@@ -161,6 +162,11 @@ pub struct Target<'s> {
     pub source: &'s str,
 }
 
+#[derive(Debug, PartialEq)]
+pub struct StatisticsCookie<'s> {
+    pub source: &'s str,
+}
+
 impl<'s> Source<'s> for Object<'s> {
     fn get_source(&'s self) -> &'s str {
         match self {
@@ -187,6 +193,7 @@ impl<'s> Source<'s> for Object<'s> {
             Object::InlineSourceBlock(obj) => obj.source,
             Object::LineBreak(obj) => obj.source,
             Object::Target(obj) => obj.source,
+            Object::StatisticsCookie(obj) => obj.source,
         }
     }
 }
@@ -322,3 +329,9 @@ impl<'s> Source<'s> for Target<'s> {
         self.source
     }
 }
+
+impl<'s> Source<'s> for StatisticsCookie<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}