fix(tlb): serialize exotic flag

Author: akostylev0

crates/tlb/src/cell.rs

@@ -336,4 +336,25 @@ mod tests {
             hex!("f345277cc6cfa747f001367e1e873dcfa8a936b8492431248b7a3eeafa8030e7")
         );
     }
+
+    #[test]
+    fn cell_exotic_serde() {
+        let expected = Cell {
+            is_exotic: true,
+            data: BitVec::from_slice(&[0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]),
+            references: vec![Arc::new(Cell {
+                is_exotic: false,
+                data: BitVec::from_slice(&[0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00]),
+                references: vec![],
+            })],
+        };
+
+        let actual = expected
+            .to_cell(())
+            .unwrap()
+            .parse_fully::<Cell>(NoArgs::EMPTY)
+            .unwrap();
+
+        assert_eq!(actual, expected);
+    }
 }

crates/tlb/src/ser/builder.rs

@@ -50,7 +50,7 @@ impl CellBuilder {
                 "cannot mark exotic cell with non-empty data: {} bits, {} references",
                 self.data.len(),
                 self.references.len(),
-            )))
+            )));
         }
 
         self.is_exotic = true;
@@ -192,6 +192,9 @@ impl CellSerialize for CellBuilder {
     type Args = ();
 
     fn store(&self, builder: &mut CellBuilder, _: Self::Args) -> Result<(), CellBuilderError> {
+        if self.is_exotic {
+            builder.exotic()?;
+        }
         builder.write_bitslice(&self.data)?;
         builder.store_many_as::<_, Ref>(&self.references, ())?;
         Ok(())

crates/tlb/src/ser/mod.rs

@@ -132,6 +132,9 @@ impl CellSerialize for Cell {
 
     #[inline]
     fn store(&self, builder: &mut CellBuilder, _: Self::Args) -> Result<(), CellBuilderError> {
+        if self.is_exotic {
+            builder.exotic()?;
+        }
         builder.write_bitslice(&self.data)?;
         builder.store_many_as::<_, Ref>(&self.references, ())?;