feat: disable gas checks (#54)

* dep: bump alloy to 0.3.6

* fix: doc links

* feat: disable gas checks

Author: prestwich

Diff for: Cargo.toml

@@ -85,3 +85,12 @@ optional_block_gas_limit = ["revm/optional_block_gas_limit"]
 optional_eip3607 = ["revm/optional_eip3607"]
 optional_gas_refund = ["revm/optional_gas_refund"]
 optional_no_base_fee = ["revm/optional_no_base_fee"]
+full_env_cfg = [
+    "optional_balance_check",
+    "optional_block_gas_limit",
+    "optional_eip3607",
+    "optional_gas_refund",
+    "optional_no_base_fee",
+    "optional_beneficiary_reward",
+]
+

Diff for: src/fill/mod.rs

@@ -7,3 +7,56 @@ mod noop;
 pub use noop::{NoopBlock, NoopCfg};
 
 mod zenith;
+
+use revm::primitives::{CfgEnv, TxEnv};
+
+/// A [`Cfg`] that disables gas-related checks and payment of the
+/// beneficiary reward, while leaving other cfg options unchanged.
+///
+/// ## Warning
+///
+/// This filler relies on the following optional features:
+/// - `optional_balance_check`
+/// - `optional_beneficiary_reward`
+/// - `optional_gas_refund`
+/// - `optional_no_base_fee`
+///
+///
+/// It will disable the corresponding checks if the features are enabled. **If
+/// none of the features are enabled, this filler will do nothing.**
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
+pub struct DisableGasChecks;
+
+impl Cfg for DisableGasChecks {
+    #[allow(unused_variables)]
+    fn fill_cfg_env(&self, cfg_env: &mut CfgEnv) {
+        #[cfg(feature = "optional_balance_check")]
+        {
+            cfg_env.disable_balance_check = true;
+        }
+        #[cfg(feature = "optional_beneficiary_reward")]
+        {
+            cfg_env.disable_beneficiary_reward = true;
+        }
+        #[cfg(feature = "optional_gas_refund")]
+        {
+            cfg_env.disable_gas_refund = true;
+        }
+        #[cfg(feature = "optional_no_base_fee")]
+        {
+            cfg_env.disable_base_fee = true;
+        }
+    }
+}
+
+/// A [`Tx`] that disables the nonce check, while leaving other [`TxEnv`]
+/// attributes untouched.
+#[derive(Debug, Clone, Copy, Default, PartialEq, Eq)]
+pub struct DisableNonceCheck;
+
+impl Tx for DisableNonceCheck {
+    #[allow(unused_variables)]
+    fn fill_tx_env(&self, tx_env: &mut TxEnv) {
+        tx_env.nonce = None;
+    }
+}

Diff for: src/fill/zenith.rs

@@ -1,7 +1,8 @@
 use crate::Tx;
-use alloy_primitives::U256;
+use alloy_primitives::{Address, U256};
+use alloy_sol_types::SolCall;
 use revm::primitives::{TransactTo, TxEnv};
-use zenith_types::Transactor;
+use zenith_types::{Passage::EnterToken, Transactor};
 
 impl Tx for Transactor::Transact {
     fn fill_tx_env(&self, tx_env: &mut revm::primitives::TxEnv) {
@@ -41,3 +42,40 @@ impl Tx for Transactor::Transact {
         authorization_list.take();
     }
 }
+
+impl Tx for EnterToken {
+    fn fill_tx_env(&self, tx_env: &mut TxEnv) {
+        let TxEnv {
+            caller,
+            gas_limit,
+            gas_price,
+            transact_to,
+            value,
+            data,
+            nonce,
+            chain_id,
+            access_list,
+            gas_priority_fee,
+            blob_hashes,
+            max_fee_per_blob_gas,
+            authorization_list,
+        } = tx_env;
+
+        *caller = zenith_types::MINTER_ADDRESS;
+        *gas_limit = 1_000_000;
+        *gas_price = U256::ZERO;
+        // This is deliberately not set, as it is not known by the event.
+        *transact_to = Address::ZERO.into();
+        *value = U256::ZERO;
+        *data = zenith_types::mintCall { amount: self.amount(), to: self.rollupRecipient }
+            .abi_encode()
+            .into();
+        *nonce = None;
+        *chain_id = Some(self.rollup_chain_id());
+        *access_list = vec![];
+        *gas_priority_fee = Some(U256::ZERO);
+        blob_hashes.clear();
+        max_fee_per_blob_gas.take();
+        authorization_list.take();
+    }
+}

Diff for: src/lib.rs

@@ -375,7 +375,7 @@ mod ext;
 pub use ext::EvmExtUnchecked;
 
 mod fill;
-pub use fill::{Block, Cfg, NoopBlock, NoopCfg, Tx};
+pub use fill::{Block, Cfg, DisableGasChecks, DisableNonceCheck, NoopBlock, NoopCfg, Tx};
 
 pub mod journal;