rust: add type aliases for enums

bindings/rust/evmc-vm/src/lib.rs

@@ -8,6 +8,8 @@
 //! Have a look at evmc-declare to declare an EVMC compatible VM.
 //! This crate documents how to use certain data types.
 
+#![feature(type_alias_enum_variants)]
+
 mod container;
 mod types;
 

bindings/rust/evmc-vm/src/types.rs

@@ -9,6 +9,21 @@ pub type Bytes32 = ffi::evmc_bytes32;
 /// EVMC big-endian 256-bit integer
 pub type Uint256 = ffi::evmc_uint256be;
 
+/// EVMC message (call) kind.
+pub type MessageKind = ffi::evmc_call_kind;
+
+/// EVMC message (call) flags.
+pub type MessageFlags = ffi::evmc_flags;
+
+/// EVMC status code.
+pub type StatusCode = ffi::evmc_status_code;
+
+/// EVMC storage status.
+pub type StorageStatus = ffi::evmc_storage_status;
+
+/// EVMC VM revision.
+pub type Revision = ffi::evmc_revision;
+
 #[cfg(test)]
 mod tests {
     use super::*;
@@ -34,4 +49,35 @@ mod tests {
         let b = Uint256::default();
         assert_eq!(a.clone(), b.clone());
     }
+
+    #[test]
+    fn message_kind() {
+        assert_eq!(MessageKind::EVMC_CALL, ffi::evmc_call_kind::EVMC_CALL);
+        assert_eq!(
+            MessageKind::EVMC_CALLCODE,
+            ffi::evmc_call_kind::EVMC_CALLCODE
+        );
+        assert_eq!(
+            MessageKind::EVMC_DELEGATECALL,
+            ffi::evmc_call_kind::EVMC_DELEGATECALL
+        );
+        assert_eq!(MessageKind::EVMC_CREATE, ffi::evmc_call_kind::EVMC_CREATE);
+    }
+
+    #[test]
+    fn message_flags() {
+        assert_eq!(MessageFlags::EVMC_STATIC, ffi::evmc_flags::EVMC_STATIC);
+    }
+
+    #[test]
+    fn status_code() {}
+
+    #[test]
+    fn storage_status() {}
+
+    #[test]
+    fn revision() {
+        assert_eq!(Revision::EVMC_FRONTIER, ffi::evmc_revision::EVMC_FRONTIER);
+        assert_eq!(Revision::EVMC_ISTANBUL, ffi::evmc_revision::EVMC_ISTANBUL);
+    }
 }