feat: re-export used deps from reth-codecs (#13167)

crates/storage/codecs/Cargo.toml

@@ -26,7 +26,7 @@ op-alloy-consensus = { workspace = true, optional = true }
 
 # misc
 bytes.workspace = true
-modular-bitfield = { workspace = true, optional = true }
+modular-bitfield.workspace = true
 visibility = { version = "0.1.1", optional = true}
 serde.workspace = true
 arbitrary = { workspace = true, features = ["derive"], optional = true }
@@ -65,7 +65,6 @@ alloy = [
     "dep:alloy-consensus",
     "dep:alloy-eips",
     "dep:alloy-genesis",
-    "dep:modular-bitfield",
     "dep:alloy-trie",
 ]
 op = ["alloy", "dep:op-alloy-consensus"]

crates/storage/codecs/derive/src/compact/flags.rs

@@ -1,9 +1,11 @@
 use super::*;
+use syn::Attribute;
 
 /// Generates the flag fieldset struct that is going to be used to store the length of fields and
 /// their potential presence.
 pub(crate) fn generate_flag_struct(
     ident: &Ident,
+    attrs: &[Attribute],
     has_lifetime: bool,
     fields: &FieldList,
     is_zstd: bool,
@@ -13,6 +15,8 @@ pub(crate) fn generate_flag_struct(
     let flags_ident = format_ident!("{ident}Flags");
     let mod_flags_ident = format_ident!("{ident}_flags");
 
+    let reth_codecs = parse_reth_codecs_path(attrs).unwrap();
+
     let mut field_flags = vec![];
 
     let total_bits = if is_enum {
@@ -88,8 +92,9 @@ pub(crate) fn generate_flag_struct(
         pub use #mod_flags_ident::#flags_ident;
         #[allow(non_snake_case)]
         mod #mod_flags_ident {
-            use bytes::Buf;
-            use modular_bitfield::prelude::*;
+            use #reth_codecs::__private::Buf;
+            use #reth_codecs::__private::modular_bitfield;
+            use #reth_codecs::__private::modular_bitfield::prelude::*;
 
             #[doc = #docs]
             #[bitfield]

crates/storage/codecs/derive/src/compact/generator.rs

@@ -239,7 +239,7 @@ fn generate_to_compact(fields: &FieldList, ident: &Ident, is_zstd: bool) -> Vec<
 }
 
 /// Function to extract the crate path from `reth_codecs(crate = "...")` attribute.
-fn parse_reth_codecs_path(attrs: &[Attribute]) -> syn::Result<syn::Path> {
+pub(crate) fn parse_reth_codecs_path(attrs: &[Attribute]) -> syn::Result<syn::Path> {
     // let default_crate_path: syn::Path = syn::parse_str("reth-codecs").unwrap();
     let mut reth_codecs_path: syn::Path = syn::parse_quote!(reth_codecs);
     for attr in attrs {

crates/storage/codecs/derive/src/compact/mod.rs

@@ -48,7 +48,7 @@ pub fn derive(input: TokenStream, is_zstd: bool) -> TokenStream {
     let has_lifetime = has_lifetime(&generics);
 
     let fields = get_fields(&data);
-    output.extend(generate_flag_struct(&ident, has_lifetime, &fields, is_zstd));
+    output.extend(generate_flag_struct(&ident, &attrs, has_lifetime, &fields, is_zstd));
     output.extend(generate_from_to(&ident, &attrs, has_lifetime, &fields, is_zstd));
     output.into()
 }
@@ -235,7 +235,7 @@ mod tests {
         let mut output = quote! {};
         let DeriveInput { ident, data, attrs, .. } = parse2(f_struct).unwrap();
         let fields = get_fields(&data);
-        output.extend(generate_flag_struct(&ident, false, &fields, false));
+        output.extend(generate_flag_struct(&ident, &attrs, false, &fields, false));
         output.extend(generate_from_to(&ident, &attrs, false, &fields, false));
 
         // Expected output in a TokenStream format. Commas matter!
@@ -255,8 +255,9 @@ mod tests {
 
             #[allow(non_snake_case)]
             mod TestStruct_flags {
-                use bytes::Buf;
-                use modular_bitfield::prelude::*;
+                use reth_codecs::__private::Buf;
+                use reth_codecs::__private::modular_bitfield;
+                use reth_codecs::__private::modular_bitfield::prelude::*;
                 #[doc = "Fieldset that facilitates compacting the parent type. Used bytes: 2 | Unused bits: 1"]
                 #[bitfield]
                 #[derive(Clone, Copy, Debug, Default)]

crates/storage/codecs/src/lib.rs

@@ -39,6 +39,11 @@ pub mod txtype;
 #[cfg(any(test, feature = "test-utils"))]
 pub mod test_utils;
 
+// Used by generated code and doc tests. Not public API.
+#[doc(hidden)]
+#[path = "private.rs"]
+pub mod __private;
+
 /// Trait that implements the `Compact` codec.
 ///
 /// When deriving the trait for custom structs, be aware of certain limitations/recommendations:

crates/storage/codecs/src/private.rs

@@ -0,0 +1,3 @@
+pub use modular_bitfield;
+
+pub use bytes::Buf;