feat: implement hidden api restriction flags

src/raw/hiddenapi.rs

@@ -0,0 +1,33 @@
+use crate::raw::uleb128;
+
+bitflags::bitflags! {
+  /// For more information, click [here][1].
+  ///
+  /// [1]: https://source.android.com/docs/core/runtime/dex-format#hiddenapi-class-data-item
+  #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)]
+  pub struct RestrictionFlag: u64 {
+      const Whitelist = 0;
+      const Greylist = 1;
+      const Blacklist = 2;
+      const GreylistMaxO = 3;
+      const GreylistMaxP = 4;
+      const GreylistMaxQ = 5;
+      const GreylistMaxR = 6;
+  }
+}
+
+impl RestrictionFlag {
+    pub fn try_from_uleb128(src: &[u8], offset: &mut usize) -> Result<Self, scroll::Error> {
+        let flags = uleb128::read(src, offset)?;
+        Ok(RestrictionFlag::from_bits_truncate(flags))
+    }
+
+    pub fn try_into_uleb128(
+        &self,
+        dst: &mut [u8],
+        offset: &mut usize,
+    ) -> Result<(), scroll::Error> {
+        uleb128::write(dst, offset, self.bits())?;
+        Ok(())
+    }
+}

src/raw/mod.rs

@@ -7,6 +7,7 @@ pub mod code_item;
 pub mod encoded_value;
 pub mod flags;
 pub mod header;
+pub mod hiddenapi;
 pub mod map_list;
 pub mod method_handle;
 /// Simple, small types that don't need their own module.