rust: reorganize alias types

1. remove duplicate types
2. add an alias type Capabilities in evmc-vm

Author: CaptainVincent

bindings/rust/evmc-client/Cargo.toml

@@ -13,4 +13,5 @@ edition = "2018"
 
 [dependencies]
 evmc-sys = { path = "../evmc-sys", version = "7.4.0" }
+evmc-vm = { path = "../evmc-vm", version = "7.4.0" }
 libloading = "0.5"

bindings/rust/evmc-client/src/host.rs

@@ -27,7 +27,7 @@ pub trait HostInterface {
     fn emit_log(&mut self, addr: &Address, topics: &Vec<Bytes32>, data: &Bytes);
     fn call(
         &mut self,
-        kind: CallKind,
+        kind: MessageKind,
         destination: &Address,
         sender: &Address,
         value: &Bytes32,

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

@@ -73,7 +73,7 @@ impl EvmcVm {
         &self,
         host_interface: Box<dyn host::HostInterface>,
         rev: Revision,
-        kind: CallKind,
+        kind: MessageKind,
         is_static: bool,
         depth: i32,
         gas: i64,

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

@@ -3,16 +3,10 @@
  * Licensed under the Apache License, Version 2.0.
  */
 
-pub use evmc_sys as ffi;
+pub use evmc_vm::{Capabilities, MessageKind, Revision, StatusCode, StorageStatus};
 
 pub const ADDRESS_LENGTH: usize = 20;
 pub const BYTES32_LENGTH: usize = 32;
 pub type Address = [u8; ADDRESS_LENGTH];
 pub type Bytes32 = [u8; BYTES32_LENGTH];
 pub type Bytes = [u8];
-
-pub type StorageStatus = ffi::evmc_storage_status;
-pub type CallKind = ffi::evmc_call_kind;
-pub type Revision = ffi::evmc_revision;
-pub type StatusCode = ffi::evmc_status_code;
-pub type Capabilities = ffi::evmc_capabilities;

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

@@ -15,6 +15,9 @@ pub type MessageKind = ffi::evmc_call_kind;
 /// EVMC message (call) flags.
 pub type MessageFlags = ffi::evmc_flags;
 
+/// EVMC VM capabilities.
+pub type Capabilities = ffi::evmc_capabilities;
+
 /// EVMC status code.
 pub type StatusCode = ffi::evmc_status_code;
 
@@ -69,6 +72,22 @@ mod tests {
         assert_eq!(MessageFlags::EVMC_STATIC, ffi::evmc_flags::EVMC_STATIC);
     }
 
+    #[test]
+    fn capabilities() {
+        assert_eq!(
+            Capabilities::EVMC_CAPABILITY_EVM1,
+            ffi::evmc_capabilities::EVMC_CAPABILITY_EVM1
+        );
+        assert_eq!(
+            Capabilities::EVMC_CAPABILITY_EWASM,
+            ffi::evmc_capabilities::EVMC_CAPABILITY_EWASM
+        );
+        assert_eq!(
+            Capabilities::EVMC_CAPABILITY_PRECOMPILES,
+            ffi::evmc_capabilities::EVMC_CAPABILITY_PRECOMPILES
+        );
+    }
+
     #[test]
     fn status_code() {
         assert_eq!(