Please address the comments from this code review:

## Individual Comments

### Comment 1
<location> `crates/fmt/src/state/sol.rs:217` </location>
<code_context>
             }

             ast::ImportItems::Aliases(aliases) => {
-                self.s.cbox(self.ind);
-                self.word("{");
</code_context>

<issue_to_address>
**issue (complexity):** Consider extracting complex closure logic into small helper methods to flatten match arms and improve readability.

```markdown
You’re right that most of the complexity comes from large nested blocks and closures. You can pull each into a small helper, flatten the `match` arms, and get rid of the closures. For example:

1) Extract the import‐alias logic:

```rust
// NEW HELPER
fn print_braced_aliases<I>(&mut self, aliases: I)
where
    I: IntoIterator<Item = (&Ident, &Option<Ident>)>,
{
    let single = self.config.single_line_imports && aliases.into_iter().count() == 1;
    if single {
        self.word("{");
        if self.config.bracket_spacing { self.nbsp() }
    } else {
        self.s.cbox(self.ind);
        self.word("{");
        self.braces_break();
    }

    if self.config.sort_imports {
        let mut sorted: Vec<_> = aliases.into_iter().collect();
        sorted.sort_by_key(|(ident, _)| ident.name.as_str());
        self.print_commasep_aliases(sorted.into_iter())
    } else {
        self.print_commasep_aliases(aliases.into_iter())
    }

    if single {
        if self.config.bracket_spacing { self.nbsp() }
        self.word("}");
    } else {
        self.braces_break();
        self.s.offset(-self.ind);
        self.word("}");
        self.end();
    }
}
```

Then in your `match items` arm:

```rust
ast::ImportItems::Aliases(aliases) => {
    self.print_braced_aliases(aliases.iter());
    self.word(" from ");
    self.print_ast_str_lit(path);
}
```

2) Pull out binary‐expr printing into two small methods:

```rust
// NEW HELPERS
fn binary_inline(&mut self, rhs: &ast::Expr<'_>) {
    self.print_sep(Separator::Nbsp);
    self.neverbreak();
    self.print_expr(rhs);
}

fn binary_break(&mut self, rhs: &ast::Expr<'_>, hard: bool) {
    if !self.is_bol_or_only_ind() {
        self.print_sep(if hard { Separator::Hardbreak } else { Separator::Space });
    }
    self.s.offset(self.ind);
    self.s.ibox(self.ind);
    self.print_expr(rhs);
    self.end();
}
```

And simplify your match arm:

```rust
ast::ExprKind::Binary(lhs, op, _) => {
    let size = self.estimate_lhs_size(rhs, op) + lhs_size;
    let needs_break = force_break || size > space_left;

    if needs_break {
        self.binary_break(rhs, force_break);
    } else {
        self.binary_inline(rhs);
    }
}
```

This keeps all behavior but removes closures and deep nesting.
</issue_to_address>

### Comment 2
<location> `crates/cast/src/lib.rs:1146` </location>
<code_context>
+            .await?)
+    }
+
+    pub async fn erc20_transfer(
+        &self,
+        token: Address,
</code_context>

<issue_to_address>
**issue (complexity):** Consider refactoring the duplicate signer and send logic into a helper function to simplify the transfer and approve methods.

Here’s one way to collapse the duplicate signer/`send()` logic into a small helper. It preserves 100% of the behavior, but cuts your two functions down to a one-liner each:

```rust
/// Helper: attach optional signer and `.send().await`, returning the hash.
async fn send_with_opt_signer<B>(
    builder: B,
    signer: Option<foundry_wallets::WalletSigner>
) -> eyre::Result<TxHash>
where
    B: Into<alloy_provider::PendingTransactionBuilder> // or whatever your builder type is
{
    // convert to the concrete builder type
    let mut tx_builder = builder.into();
    if let Some(wallet) = signer {
        tx_builder = tx_builder.from(wallet.address());
    }
    let pending = tx_builder.send().await?;
    Ok(*pending.tx_hash())
}
```

Then your two methods shrink to:

```rust
pub async fn erc20_transfer(
    &self,
    token: Address,
    to: Address,
    amount: U256,
    signer: Option<foundry_wallets::WalletSigner>,
) -> Result<TxHash> {
    let builder = IERC20::new(token, &self.provider).transfer(to, amount);
    send_with_opt_signer(builder, signer).await
}

pub async fn erc20_approve(
    &self,
    token: Address,
    spender: Address,
    amount: U256,
    signer: Option<foundry_wallets::WalletSigner>,
) -> Result<TxHash> {
    let builder = IERC20::new(token, &self.provider).approve(spender, amount);
    send_with_opt_signer(builder, signer).await
}
```

This removes all the duplication but keeps the exact same behavior.
</issue_to_address>