Summary

Major improvements to the C++ tree-sitter parser that enable proper graph construction for C++ codebases. On a real 300-file C++ project, these changes increased CALLS edges from 1,287 to 13,042 (10x) and INHERITS edges from 0 to 79.

Changes

1. Inheritance extraction

Replace hardcoded "bases": [] placeholder with _extract_base_classes() that walks base_class_clause children. Handles public/private/protected/virtual inheritance, multiple inheritance, qualified base names (ns::Base), and template base classes (strips template args for graph matching).

2. Qualified method definitions

Add qualified_identifier to the functions tree-sitter query so ClassName::method() definitions in .cpp files are captured with correct class_context. Previously only free functions and simple identifiers matched, missing most C++ method bodies.

3. Scoped and arrow call patterns

Add qualified_identifier and field_expression handling to the calls query. Now captures Class::staticMethod(), ptr->method(), and this->method() with proper inferred_obj_type for cross-file resolution.

4. Fix _get_parent_context for C++

Use class_specifier (the correct C++ tree-sitter node type) instead of class_definition (Python's type). Also handle qualified_identifier and field_identifier when traversing function declarators.

5. Deduplicate pre_scan_cpp paths

Prevent duplicate entries in the imports map that caused the inheritance resolver's len(paths) == 1 check to fail for classes with multiple qualified method definitions.

6. Fix _find_lambda_assignments indentation

Correct a pre-existing indentation bug where the lambda type check ran outside the capture_name == 'name' block, plus update stale class_definition reference.

Note on args field

The args field on call data is now [] instead of a list of parameter dicts. The old code was incorrectly extracting the function definition's parameters rather than the call's arguments.

Tests

Added tests/unit/parsers/test_cpp_parser.py with 14 tests covering inheritance (5), qualified methods (2), call patterns (4), enums (2), and a realistic integration test (1).

Depends on

• fix(cpp): fix NameError in _find_enums crashing enum parsing #733 (fix/cpp-find-enums-nameerror) — must be merged first

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