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@codedbyasim codedbyasim commented Jul 12, 2025

… in derived classes

Previously, autowrap would generate a from ... cimport statement for derived classes even if their base class was marked with wrap-ignore. This caused build failures due to missing .pxd files for ignored base classes, especially when those were the only contents of their file.

This change checks whether the base class has the wrap-ignore annotation and, if so, suppresses the cimport generation for the derived class. This prevents erroneous imports like:

From ._pyopenms_20 cimport SpectrumAccessTransforming

When SpectrumAccessTransforming is intentionally not wrapped.

Also adds an optional debug message to clarify when this skip occurs.

This fix preserves expected behaviour for abstract base classes and improves compatibility when selectively wrapping a class hierarchy.

Fixes: #194

Summary by CodeRabbit

  • Bug Fixes
    • Improved handling of class imports by skipping pxd imports for classes whose base classes are marked to be ignored, preventing unnecessary or incorrect imports.

… in derived classes

Previously, autowrap would generate a `from ... cimport` statement for derived classes even if their base class was marked with `wrap-ignore`. This caused build failures due to missing .pxd files for ignored base classes, especially when those were the only contents of their file.

This change checks whether the base class has the `wrap-ignore` annotation and, if so, suppresses the cimport generation for the derived class. This prevents erroneous imports like:

  From ._pyopenms_20 cimport SpectrumAccessTransforming

When SpectrumAccessTransforming is intentionally not wrapped.

Also adds an optional debug message to clarify when this skip occurs.

This fix preserves expected behaviour for abstract base classes and improves compatibility when selectively wrapping a class hierarchy.

Fixes: OpenMS#194
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coderabbitai bot commented Jul 12, 2025

Walkthrough

The update modifies the create_foreign_cimports method in CodeGenerator.py to skip generating pxd import statements for classes whose base class has the wrap-ignore annotation. This is in addition to the existing check for the no_pxd_import flag. No changes to exported or public entity declarations are present.

Changes

File(s) Change Summary
autowrap/CodeGenerator.py Enhanced logic in create_foreign_cimports to skip cimports for classes with wrap-ignored base classes.

Sequence Diagram(s)

sequenceDiagram
    participant CodeGenerator
    participant ResolvedClass
    participant BaseClass

    CodeGenerator->>ResolvedClass: Iterate over resolved classes
    ResolvedClass->>BaseClass: Check base class for wrap-ignore
    alt BaseClass is wrap-ignored or no_pxd_import
        CodeGenerator-->>CodeGenerator: Skip cimport statement
    else
        CodeGenerator-->>CodeGenerator: Add cimport statement
    end
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Assessment against linked issues

Objective Addressed Explanation
Properly handle wrap-ignore on base classes to prevent derived class build errors (#194)

Poem

In the warren where code does hop,
We checked each class, from base to top.
If a parent’s ignored, we skip the import,
No more errors to report!
With logic refined, our bugs are few—
The rabbit’s work is almost through. 🐇✨

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Actionable comments posted: 0

🧹 Nitpick comments (1)
autowrap/CodeGenerator.py (1)

1954-1962: LGTM! Well-implemented fix for wrap-ignore inheritance issue.

The added logic correctly addresses the issue where derived classes would generate invalid cimport statements when their base classes are marked with wrap-ignore. The implementation is clean and follows existing code patterns.

However, consider using the logging framework for consistency:

-                                print(f"[autowrap] Skipping pxd import for derived class '{resolved.name}' "
-                                f"because base '{base_class.name}' is wrap-ignored.")
+                                L.info(f"Skipping pxd import for derived class '{resolved.name}' "
+                                f"because base '{base_class.name}' is wrap-ignored.")

This would be more consistent with other logging statements in the file (e.g., lines 1927, 1969).

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Reviewing files that changed from the base of the PR and between 92598a8 and 8db5830.

📒 Files selected for processing (1)
  • autowrap/CodeGenerator.py (1 hunks)

@jpfeuffer
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Nice but such a breaking change urgently needs tests.

@jpfeuffer
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Also, not even the old tests pass..
Please run the test suite before commiting anything.

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Handling of wrap-ignore with derived classes is wonky
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