chore: Make inspector use generics, rm associated types (bluealloy#1934)

* chore: Make inspector use generics, rm associated types

* prev context

* default impl for ImputsImpl

* ContextWire and Wiring

* rename and few cleanup

* fmt/clippy

* simplify context

* auto_impl on error getter trait

* simpify host

* impl &mut and Box over setter traits

* relax JournalExt

* compile no std

* string

* box

Author: rakita

crates/context/interface/src/block.rs

@@ -4,6 +4,7 @@ pub use blob::{calc_blob_gasprice, calc_excess_blob_gas, BlobExcessGasAndPrice};
 
 use auto_impl::auto_impl;
 use primitives::{Address, B256, U256};
+use std::boxed::Box;
 
 /// Trait for retrieving block information required for execution.
 #[auto_impl(&, &mut, Box, Arc)]
@@ -79,3 +80,15 @@ pub trait BlockGetter {
 pub trait BlockSetter: BlockGetter {
     fn set_block(&mut self, block: <Self as BlockGetter>::Block);
 }
+
+impl<T: BlockSetter> BlockSetter for &mut T {
+    fn set_block(&mut self, block: <Self as BlockGetter>::Block) {
+        (**self).set_block(block)
+    }
+}
+
+impl<T: BlockSetter> BlockSetter for Box<T> {
+    fn set_block(&mut self, block: <Self as BlockGetter>::Block) {
+        (**self).set_block(block)
+    }
+}

crates/context/interface/src/errors.rs

@@ -1,4 +1,7 @@
+use auto_impl::auto_impl;
+
 // TODO : Change the name of the trait
+#[auto_impl(&mut, Box)]
 pub trait ErrorGetter {
     type Error;
 

crates/context/interface/src/host.rs

@@ -5,28 +5,16 @@ pub use dummy::DummyHost;
 
 use crate::{
     journaled_state::{AccountLoad, Eip7702CodeLoad},
-    Block, Cfg, Transaction,
+    BlockGetter, CfgGetter, TransactionGetter,
 };
+use auto_impl::auto_impl;
 use primitives::{Address, Bytes, Log, B256, U256};
 
 /// EVM context host.
 // TODO : Move to context-interface
-pub trait Host {
-    /// Chain specification
-    type BLOCK: Block;
-    type TX: Transaction;
-    type CFG: Cfg;
-
-    /// Returns a reference to the environment.
-    fn tx(&self) -> &Self::TX;
-
-    /// Returns a mutable reference to the environment.
-    fn block(&self) -> &Self::BLOCK;
-
-    // TODO : Make it generic in future
-    fn cfg(&self) -> &Self::CFG;
-
-    /// Loads an account code.
+#[auto_impl(&mut, Box)]
+pub trait Host: TransactionGetter + BlockGetter + CfgGetter {
+    /// Load an account code.
     fn load_account_delegated(&mut self, address: Address) -> Option<AccountLoad>;
 
     /// Gets the block hash of the given block `number`.

crates/context/interface/src/host/dummy.rs

@@ -1,5 +1,5 @@
 use super::{Host, SStoreResult, SelfDestructResult};
-use crate::{Block, Cfg, Transaction};
+use crate::{Block, BlockGetter, Cfg, CfgGetter, Transaction, TransactionGetter};
 use primitives::{hash_map::Entry, Address, Bytes, HashMap, Log, B256, KECCAK_EMPTY, U256};
 use std::vec::Vec;
 
@@ -48,26 +48,31 @@ where
     }
 }
 
-impl<TX: Transaction, BLOCK: Block, CFG: Cfg> Host for DummyHost<BLOCK, TX, CFG> {
-    type TX = TX;
-    type BLOCK = BLOCK;
-    type CFG = CFG;
+impl<BLOCK: Block, TX: Transaction, CFG: Cfg> BlockGetter for DummyHost<BLOCK, TX, CFG> {
+    type Block = BLOCK;
 
-    #[inline]
-    fn tx(&self) -> &Self::TX {
-        &self.tx
+    fn block(&self) -> &Self::Block {
+        &self.block
     }
+}
 
-    #[inline]
-    fn block(&self) -> &Self::BLOCK {
-        &self.block
+impl<BLOCK: Block, TX: Transaction, CFG: Cfg> TransactionGetter for DummyHost<BLOCK, TX, CFG> {
+    type Transaction = TX;
+
+    fn tx(&self) -> &Self::Transaction {
+        &self.tx
     }
+}
 
-    #[inline]
-    fn cfg(&self) -> &Self::CFG {
+impl<BLOCK: Block, TX: Transaction, CFG: Cfg> CfgGetter for DummyHost<BLOCK, TX, CFG> {
+    type Cfg = CFG;
+
+    fn cfg(&self) -> &Self::Cfg {
         &self.cfg
     }
+}
 
+impl<TX: Transaction, BLOCK: Block, CFG: Cfg> Host for DummyHost<BLOCK, TX, CFG> {
     #[inline]
     fn load_account_delegated(&mut self, _address: Address) -> Option<AccountLoad> {
         Some(AccountLoad::default())

crates/context/interface/src/journaled_state.rs

@@ -286,28 +286,38 @@ impl<T> Eip7702CodeLoad<T> {
     }
 }
 
-/// Helper that extracts database error from [`JournalStateGetter`]
-pub type JournalStateGetterDBError<CTX> =
-    <<<CTX as JournalStateGetter>::Journal as Journal>::Database as Database>::Error;
+/// Helper that extracts database error from [`JournalGetter`].
+pub type JournalDBError<CTX> =
+    <<<CTX as JournalGetter>::Journal as Journal>::Database as Database>::Error;
 
-pub trait JournalStateGetter: DatabaseGetter {
+pub trait JournalGetter: DatabaseGetter {
     type Journal: Journal<Database = <Self as DatabaseGetter>::Database>;
 
     fn journal(&mut self) -> &mut Self::Journal;
+
+    fn journal_ref(&self) -> &Self::Journal;
 }
 
-impl<T: JournalStateGetter> JournalStateGetter for &mut T {
+impl<T: JournalGetter> JournalGetter for &mut T {
     type Journal = T::Journal;
 
     fn journal(&mut self) -> &mut Self::Journal {
         T::journal(*self)
     }
+
+    fn journal_ref(&self) -> &Self::Journal {
+        T::journal_ref(*self)
+    }
 }
 
-impl<T: JournalStateGetter> JournalStateGetter for Box<T> {
+impl<T: JournalGetter> JournalGetter for Box<T> {
     type Journal = T::Journal;
 
     fn journal(&mut self) -> &mut Self::Journal {
         T::journal(self.as_mut())
     }
+
+    fn journal_ref(&self) -> &Self::Journal {
+        T::journal_ref(self.as_ref())
+    }
 }

crates/context/interface/src/lib.rs

@@ -17,5 +17,5 @@ pub use block::{Block, BlockGetter};
 pub use cfg::{Cfg, CfgGetter, CreateScheme, TransactTo};
 pub use database_interface::{DBErrorMarker, Database, DatabaseGetter};
 pub use errors::ErrorGetter;
-pub use journaled_state::{Journal, JournalStateGetter, JournalStateGetterDBError};
+pub use journaled_state::{Journal, JournalDBError, JournalGetter};
 pub use transaction::{Transaction, TransactionGetter, TransactionType};

crates/context/interface/src/transaction.rs

@@ -20,6 +20,7 @@ use auto_impl::auto_impl;
 use core::cmp::min;
 use core::fmt::Debug;
 use primitives::{TxKind, U256};
+use std::boxed::Box;
 
 /// Transaction validity error types.
 pub trait TransactionError: Debug + core::error::Error {}
@@ -164,3 +165,15 @@ pub trait TransactionGetter {
 pub trait TransactionSetter: TransactionGetter {
     fn set_tx(&mut self, tx: <Self as TransactionGetter>::Transaction);
 }
+
+impl<T: TransactionSetter> TransactionSetter for &mut T {
+    fn set_tx(&mut self, block: <Self as TransactionGetter>::Transaction) {
+        (**self).set_tx(block)
+    }
+}
+
+impl<T: TransactionSetter> TransactionSetter for Box<T> {
+    fn set_tx(&mut self, block: <Self as TransactionGetter>::Transaction) {
+        (**self).set_tx(block)
+    }
+}

crates/context/src/context.rs

@@ -5,7 +5,7 @@ use context_interface::{
     journaled_state::{AccountLoad, Eip7702CodeLoad},
     result::EVMError,
     transaction::TransactionSetter,
-    Block, BlockGetter, Cfg, CfgGetter, DatabaseGetter, ErrorGetter, Journal, JournalStateGetter,
+    Block, BlockGetter, Cfg, CfgGetter, DatabaseGetter, ErrorGetter, Journal, JournalGetter,
     Transaction, TransactionGetter,
 };
 use database_interface::{Database, EmptyDB};
@@ -24,17 +24,17 @@ pub struct Context<
     JOURNAL: Journal<Database = DB> = JournaledState<DB>,
     CHAIN = (),
 > {
-    /// Transaction information
-    pub tx: TX,
-    /// Block information
+    /// Block information.
     pub block: BLOCK,
-    /// Configurations
+    /// Transaction information.
+    pub tx: TX,
+    /// Configurations.
     pub cfg: CFG,
-    /// EVM State with journaling support and database
+    /// EVM State with journaling support and database.
     pub journaled_state: JOURNAL,
-    /// Inner context
+    /// Inner context.
     pub chain: CHAIN,
-    /// Error that happened during execution
+    /// Error that happened during execution.
     pub error: Result<(), <DB as Database>::Error>,
 }
 
@@ -380,22 +380,6 @@ where
     DB: Database,
     JOURNAL: Journal<Database = DB>,
 {
-    type BLOCK = BLOCK;
-    type TX = TX;
-    type CFG = CFG;
-
-    fn tx(&self) -> &Self::TX {
-        &self.tx
-    }
-
-    fn block(&self) -> &Self::BLOCK {
-        &self.block
-    }
-
-    fn cfg(&self) -> &Self::CFG {
-        &self.cfg
-    }
-
     fn block_hash(&mut self, requested_number: u64) -> Option<B256> {
         let block_number = as_u64_saturated!(*self.block().number());
 
@@ -498,7 +482,7 @@ impl<BLOCK, TX, CFG: Cfg, DB: Database, JOURNAL: Journal<Database = DB>, CHAIN>
     }
 }
 
-impl<BLOCK, TX, SPEC, DB, JOURNAL, CHAIN> JournalStateGetter
+impl<BLOCK, TX, SPEC, DB, JOURNAL, CHAIN> JournalGetter
     for Context<BLOCK, TX, SPEC, DB, JOURNAL, CHAIN>
 where
     DB: Database,
@@ -509,6 +493,10 @@ where
     fn journal(&mut self) -> &mut Self::Journal {
         &mut self.journaled_state
     }
+
+    fn journal_ref(&self) -> &Self::Journal {
+        &self.journaled_state
+    }
 }
 
 impl<BLOCK, TX, SPEC, DB, JOURNAL, CHAIN> DatabaseGetter

crates/context/src/default.rs

@@ -10,6 +10,7 @@ use core::convert::Infallible;
 use auto_impl::auto_impl;
 use primitives::{Address, HashMap, B256, U256};
 use state::{Account, AccountInfo, Bytecode};
+use std::string::String;
 
 #[cfg(feature = "asyncdb")]
 pub mod async_db;
@@ -28,6 +29,7 @@ pub trait DBErrorMarker {}
 /// Implement marker for `()`.
 impl DBErrorMarker for () {}
 impl DBErrorMarker for Infallible {}
+impl DBErrorMarker for String {}
 
 /// EVM database interface.
 #[auto_impl(&mut, Box)]