Add tests for float access macro call inputs

crates/tt/src/buffer.rs

@@ -7,7 +7,12 @@ use crate::{Leaf, Subtree, TokenTree};
 struct EntryId(usize);
 
 #[derive(Copy, Clone, Debug, Eq, PartialEq)]
-struct EntryPtr(EntryId, usize);
+struct EntryPtr(
+    /// The index of the buffer containing the entry.
+    EntryId,
+    /// The index of the entry within the buffer.
+    usize,
+);
 
 /// Internal type which is used instead of `TokenTree` to represent a token tree
 /// within a `TokenBuffer`.
@@ -229,7 +234,11 @@ impl<'a, Span> Cursor<'a, Span> {
             Some(&Entry::Subtree(_, _, entry_id)) => {
                 Cursor::create(self.buffer, EntryPtr(entry_id, 0))
             }
-            _ => self.bump(),
+            Some(Entry::End(exit)) => match exit {
+                Some(exit) => Cursor::create(self.buffer, *exit),
+                None => self,
+            },
+            _ => Cursor::create(self.buffer, EntryPtr(self.ptr.0, self.ptr.1 + 1)),
         }
     }