feat: use references in API

admin/src/lib.rs

@@ -8,7 +8,7 @@ pub struct Contract;
 
 #[contractimpl]
 impl Contract {
-    pub fn __constructor(env: &Env, admin: Address) {
+    pub fn __constructor(env: &Env, admin: &Address) {
         Self::set_admin(env, admin);
     }
 }

admin_sep/src/administratable.rs

@@ -7,11 +7,11 @@ pub trait Administratable {
         unsafe { admin_from_storage(env).unwrap_unchecked() }
     }
 
-    fn set_admin(env: &Env, new_admin: soroban_sdk::Address) {
+    fn set_admin(env: &Env, new_admin: &soroban_sdk::Address) {
         if let Some(owner) = admin_from_storage(env) {
             owner.require_auth();
         }
-        env.storage().instance().set(STORAGE_KEY, &new_admin);
+        env.storage().instance().set(STORAGE_KEY, new_admin);
     }
 }
 

admin_sep/src/upgradable.rs

@@ -5,8 +5,9 @@ use soroban_sdk::contracttrait;
 pub trait Upgradable: AdministratableExtension {
     /// Upgrades the contract to a new hash.
     /// Admin Only.
-    fn upgrade(env: &soroban_sdk::Env, new_wasm_hash: soroban_sdk::BytesN<32>) {
+    fn upgrade(env: &soroban_sdk::Env, new_wasm_hash: &soroban_sdk::BytesN<32>) {
         Self::require_admin(env);
-        env.deployer().update_current_contract_wasm(new_wasm_hash);
+        env.deployer()
+            .update_current_contract_wasm(new_wasm_hash.clone());
     }
 }

admin_v2/src/lib.rs

@@ -8,7 +8,7 @@ pub struct Contract;
 
 #[contractimpl]
 impl Contract {
-    pub fn __constructor(env: &Env, admin: Address) {
+    pub fn __constructor(env: &Env, admin: &Address) {
         Self::set_admin(env, admin);
     }
 

admin_v2/src/test.rs

@@ -6,8 +6,8 @@ use soroban_sdk::{Address, Env, testutils::Address as _};
 #[test]
 fn test() {
     let env = Env::default();
-    let admin = Address::generate(&env);
-    let contract_id = env.register(Contract, (admin.clone(),));
+    let admin = &Address::generate(&env);
+    let contract_id = env.register(Contract, (admin,));
     let _client = ContractClient::new(&env, &contract_id);
 
     // assert_eq!(client.increment(), 2);