CppInterOp based cppyy migration#21261
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Test Results 18 files 18 suites 3d 8h 26m 9s ⏱️ For more details on these failures, see this check. Results for commit a5c8a3b. ♻️ This comment has been updated with latest results. |
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Just rebased, windows builds failed with something related to libafterimage |
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Thanks @aaronj0 for the great progress so far! Just to record where we stand:
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Great progress! Similar to #21261 (comment), here the summary:
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Update: with the last two [tmp] commits: net roottests: |
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Update: alma10: 185 (-8) Note: these updates are regression tested, no new failures/early error |
… [upstream] Same as in Pythonize.cxx basic_string name from GetQualifiedCompleteName so the NPOS object is registered for the canonical class name shapes.
ROOT-specific patches on top of the compres fork cppyy/master baseline: __init__.py: - set gInterpereter to gbl.TInterpreter.Instance() - load_library(): use gSystem.Load/FindDynamicLibrary, add Windows winmode=0 for search path - add_library_path(): use gSystem.AddDynamicPath - Drop the CPPYY_API_PATH apipath_extra dispatcher-headers (ROOT installs CPyCppyy API headers) _cpython_cppyy.py: - Wrap `from cppyy_backend import loader` in try/except, fall back to c = None (ROOT does not ship cppyy_backend.so) - Platform: `import libcppyy` vs `import cppyy.libcppyy` (standalone cppyy uses the former; ROOT exposes it as cppyy.libcppyy) - load_reflection_info(): use gSystem.Load ROOT/_facade.py: - Store gInterpreter and gPad in __dict__
Source: compres forks CPyCppyy/master 6dcce64 Brings in fork-ahead developments missing from ROOT's old copy and compatibility with the CppInterOp based backend: - CppInterOp-aligned type system (Cppyy.h) - Type-based CreateConverter / CreateExecutor factory overloads - Instance_FromVoidPtr(scope) overload - PythonGILRAII for exception-safe GIL management - PyError_t RAII rewrite (unique_ptr-based) - GetTemplateArgsTypes for type-based template instantiation - ReduceReturnType/LambdaClass handling - Rvalue forwarding in Dispatcher - GetFailureMsg in Converters - STL string executor returns bound C++ object ROOT-specific CPyCppyyModule.h and CPyCppyyPyModule.cxx are preserved from master.
…tream] Source: ROOT master - Move to using SetGlobalPolicy(ECallFlags, bool) + GlobalPolicyFlags() - Drop the CallContext* argument from UseStrictOwnership() - Guard PyMapping_GetOptionalItemString for Python>3.13 in Dispatcher.cxx
…stream] Source: master
Neither on ROOT-master, nor compres-forks These fields hold C++ type handles, so semantically we should enforce this type
Source: master - Deprecate __mempolicy__ getter/setter with a clear error pointing users to the SetOwnership() pythonization - Drop the per-method memory policy from mp_call (referenced the removed sMemoryPolicy static) - Use GlobalPolicyFlags() for the Clone heuristic - Match the method name prefix before '<' only, so template arguments don't affect Clone detection
…tream] Source: ROOT-master 760b6cc - ToMemory override that lets the array converter copy Python strings (not only buffers) into C++ const char* arrays - ToArrayFromBuffer<> template helper that copies a buffer to an array-converter memory address, lifetime management via SetLifeLine
…NVERTER [upstream] Source: master Adds the 'override' keyword on HasState() in the macro so the derived-class definition matches the base-class virtual declaration.
…eam] Source: ROOT-master - DEFINE_CALL_POLICY_TOGGLE macro generates SetHeuristicMemoryPolicy, SetImplicitSmartPointerConversion, and SetGlobalSignalPolicy used by CallContext::SetGlobalPolicy() - Drop the obsolete kMemoryHeuristics/kMemoryStrict module-level labels (no longer referenced the removed CallContext::kUseStrict) - Add missing guard for Py_INCREF(gThisModule)
… [upstream] Source: ROOT-master - VectorIAdd returns self after the insert. Python += reassigns the lhs to the returned value, so returning the inserted-iterator result silently breaks the idiomatic += pattern on std::vector. Disable by wrapping VectorArray in #if 0 and removes its Utility::AddToClass call (to be fixed at a later stage) - Drop Cppyy::gGlobalScope extern, every caller uses Cppyy::GetGlobalScope()
…d [upstream] This std::span branch went only into the string based overload and not the new type based one that the compres forks use.
… args [upstream] GetQualifiedCompleteName returns the canonical class name with default template args spelled out
…ure mismatches [upstream] In PyFunction_AsCPointer, the CPPOverload and TemplateProxy branches previously returned null when the requested signature does not match the candidates, preventing the generic-Python-callable fall-through (JIT-ed wrapper path), even though CPPOverload and TemplateProxy are valid PyCallable_Check inputs. As a result, std::function/fn ptr parameters could not accept a cppyy free function or template overload whose signature did not match the target.
…[ROOT-patch] Source: ROOT - SignalTryCatch.h: gException resolved to definition from libCore.so - CPPInstance.h: replace CPYCPPYY_IMPORT with explicit extern / __declspec(dllimport) pair. Used by libROOTPythonizations which does not include CommonDefs.h for the definition of CPYCPPYY_IMPORT
…-patch] Source: ROOT-master ROOT runs CPyCppyy and libROOTPythonizations as two shared libs that under the same libcppyy Python extension module. The real PyInit_libcppyy lives in libROOTPythonizations and calls CPyCppyy::Init() to start the extension.
…s [ROOT-patch] Source: ROOT-master - Register a std::span pythonization that overrides begin() / end() with a JIT-compiled __cppyy_internal::ptr_iterator helper. libstdc++ (GCC >= 15) implements std::span::iterator via a private nested tag type, which CallFunc-generated wrappers cannot name without violating access rules — the pointer-based iterator sidesteps that - Add more std::basic_string name variants to the STLWString pythonization
… [ROOT-patch] Source: ROOT - __template_args__ read-only property on TemplateProxy for introspection of a method's template arguments - "ss:__overload__" branch in tpp_overload so callers can select an overload by both signature and template arguments Added for ROOT's Numba-introspection support.
…ype iterators [ROOT-patch] Pythonize.cxx tags begin()-returns as STL iterator types when Cppyy::GetScope succeeds on the return-type string. CppInterOp's GetScope returns the underlying class scopes, leading to raw-pointer iterators (e.g. RVec<T>::iterator = T*) falsely classified as STL iterator types. Restore the earlier behaviour of skipping pointer return values by doing a IsPointerType check on the type-handle. ROOT master's TCling-based GetScope returned null for pointer names and did not hit this false positive.
5cfc2da changed std::string-returning methods to always produce Python str instead of a CPPInstance proxy (gbl.std.string). Update test18_operator_plus_overloads and test34_cstring_template_argument asserts expecting gbl.std.string
…OOT-patch] _generic.pythonize_generic skips the pretty-printer for std::string because ToString returns a quoted ""x"" form, and CPyCppyy already pythonizes std::string with the unquoted shape. With CppInterOp, klass.__cpp_name__ is the canonical fully-qualified template form, so the typedef "std::string" no longer matched the exclude check
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The `gPad and `gVirtualX` identifiers are injected into ROOT meta via `TGlobalMappedFunction::MakeFunctor()`. However, in the ROOT Python interface we don't want to rely on ROOT meta but use Cling or Clang-Repl directly. Hence, we inject these identifiers manually into the facade. The `TDirectoryPythonAdapter` previously used for `gDirectory` mirrored the live-tracking semantics of the C++ macros: every attribute access re-resolves to the current directory. The same semantics are needed for `gPad` and `gVirtualX`, which on the C++ side are also preprocessor macros that expand to a static accessor call. Therefore, a new `LiveProxy` is introduced for this.
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…lorNumber ctor param
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Currently in a draft state, based on relatively recent ROOT commit and compiler research forks (Pending another update for the CPyCppyy (compiler-research/CPyCppyy#170, compiler-research/CPyCppyy#167, compiler-research/CPyCppyy#161 cppyy-backend (compiler-research/cppyy-backend#185)