Fix missing import in SubStates derive macro (#22892) (#22929)

Cr0a3 · web-flow · commit 3069704cda4f · 2026-02-16T23:53:28.000Z
# Objective Hello, this pr fixes #22892 ## Solution I fixed the 'missing import' bug, by hard coding the import in the code generated by the proc macro. ## Testing The code example given in the issue now compiles fine.
diff --git a/crates/bevy_state/macros/src/states.rs b/crates/bevy_state/macros/src/states.rs
@@ -124,7 +124,7 @@ pub fn derive_substates(input: TokenStream) -> TokenStream {
         }
 
         impl #impl_generics #state_trait_path for #struct_name #ty_generics #where_clause {
-            const DEPENDENCY_DEPTH : usize = <Self as #trait_path>::SourceStates::SET_DEPENDENCY_DEPTH + 1;
+            const DEPENDENCY_DEPTH : usize = <<Self as #trait_path>::SourceStates as #state_set_trait_path>::SET_DEPENDENCY_DEPTH + 1;
         }
 
         impl #impl_generics #state_mutation_trait_path for #struct_name #ty_generics #where_clause {

Original file line number	Diff line number	Diff line change
`@@ -124,7 +124,7 @@ pub fn derive_substates(input: TokenStream) -> TokenStream {`
`124`	`124`	`}`
`125`	`125`
`126`	`126`	`impl #impl_generics #state_trait_path for #struct_name #ty_generics #where_clause {`
`127`		`- const DEPENDENCY_DEPTH : usize = <Self as #trait_path>::SourceStates::SET_DEPENDENCY_DEPTH + 1;`
	`127`	`+ const DEPENDENCY_DEPTH : usize = <<Self as #trait_path>::SourceStates as #state_set_trait_path>::SET_DEPENDENCY_DEPTH + 1;`
`128`	`128`	`}`
`129`	`129`
`130`	`130`	`impl #impl_generics #state_mutation_trait_path for #struct_name #ty_generics #where_clause {`