refactor(levm,l2): hooks (#2508)

**Motivation**

- Remove duplicated code between `DefaultHook` and `L2Hook`
implementations.
- Use the `L2Hook` for every tx (regular ETH txs and L2's privilege txs)
when running the L2.

**Description**

This PR:
- Generates abstractions to be used in `DefaultHook` and `L2Hook` to
remove repeated code.
- Adds the `is_privilege` field to LEVM's `Environment` only compiled
under the `l2` feature flag.
- `L2Hook` now supports executing every tx (before only privileged).

---------

Co-authored-by: Javier Rodríguez Chatruc <[email protected]>

Author: ilitteri

cmd/ef_tests/state/Cargo.toml

@@ -41,6 +41,7 @@ path = "./lib.rs"
 default = ["c-kzg", "blst"]
 c-kzg = ["ethrex-vm/c-kzg", "ethrex-levm/c-kzg", "ethrex-common/c-kzg"]
 blst = ["ethrex-vm/blst"]
+l2 = ["ethrex-vm/l2", "ethrex-levm/l2"]
 
 [[test]]
 name = "all"

cmd/ef_tests/state/runner/levm_runner.rs

@@ -188,6 +188,7 @@ pub fn prepare_vm_for_tx<'a>(
             tx_nonce: test_tx.nonce,
             block_gas_limit: test.env.current_gas_limit,
             transient_storage: HashMap::new(),
+            is_privileged: false,
         },
         db,
         &tx,

crates/vm/backends/levm/mod.rs

@@ -132,6 +132,7 @@ impl LEVM {
             block_gas_limit: block_header.gas_limit,
             transient_storage: HashMap::new(),
             difficulty: block_header.difficulty,
+            is_privileged: matches!(tx, Transaction::PrivilegedL2Transaction(_)),
         };
 
         let mut vm = VM::new(env, db, tx)?;
@@ -721,6 +722,7 @@ fn env_from_generic(
         block_gas_limit: header.gas_limit,
         transient_storage: HashMap::new(),
         difficulty: header.difficulty,
+        is_privileged: false,
     })
 }
 

crates/vm/levm/src/environment.rs

@@ -31,4 +31,5 @@ pub struct Environment {
     pub tx_nonce: u64,
     pub block_gas_limit: u64,
     pub transient_storage: TransientStorage,
+    pub is_privileged: bool,
 }

crates/vm/levm/src/errors.rs

@@ -194,6 +194,8 @@ pub enum InternalError {
     InvalidSpecId,
     #[error("Account should had been delegated")]
     AccountNotDelegated,
+    #[error("No recipient found for privilege transaction")]
+    RecipientNotFoundForPrivilegeTransaction,
 }
 
 #[derive(Debug, Clone, PartialEq, Eq, thiserror::Error, Serialize, Deserialize)]