Create structure for entities.

src/parser/object.rs

@@ -15,6 +15,7 @@ pub enum Object<'s> {
     PlainLink(PlainLink<'s>),
     AngleLink(AngleLink<'s>),
     OrgMacro(OrgMacro<'s>),
+    Entity(Entity<'s>),
 }
 
 #[derive(Debug, PartialEq)]
@@ -96,6 +97,12 @@ pub struct OrgMacro<'s> {
     pub macro_args: Vec<&'s str>,
 }
 
+#[derive(Debug, PartialEq)]
+pub struct Entity<'s> {
+    pub source: &'s str,
+    pub entity_name: &'s str,
+}
+
 impl<'s> Source<'s> for Object<'s> {
     fn get_source(&'s self) -> &'s str {
         match self {
@@ -112,6 +119,7 @@ impl<'s> Source<'s> for Object<'s> {
             Object::PlainLink(obj) => obj.source,
             Object::AngleLink(obj) => obj.source,
             Object::OrgMacro(obj) => obj.source,
+            Object::Entity(obj) => obj.source,
         }
     }
 }
@@ -187,3 +195,9 @@ impl<'s> Source<'s> for OrgMacro<'s> {
         self.source
     }
 }
+
+impl<'s> Source<'s> for Entity<'s> {
+    fn get_source(&'s self) -> &'s str {
+        self.source
+    }
+}