subagent transcript

session 17f09f89
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delegated task
You are porting FreeCAD's salomesmesh (SMESH) + FEM to WebAssembly. VTK is now available for wasm, but the Salome MED file format library (MED/medfile
▸ Magik
You are porting FreeCAD's salomesmesh (SMESH) + FEM to WebAssembly. VTK is now available for wasm, but the Salome MED file format library (MED/medfile + HDF5) is NOT built for wasm. The MED *source* TUs are already excluded from the salomesmesh build via CMake (all `src/SMESH/MED_*.cpp` and `src/SMESH/DriverMED*.cpp` are dropped under EMSCRIPTEN). Your job: guard every remaining REFERENCE to those excluded MED symbols so the code compiles+links for wasm, WITHOUT touching the UNV/STL/DAT/CGNS/VTK code paths. REPO: /home/magik6k/lcad-wasm/freecad-port/FreeCAD Use the guard macro `#ifndef __EMSCRIPTEN__` / `#endif` (MED is never available on wasm, even when SMESH IS built — so key off __EMSCRIPTEN__, NOT FC_NO_SMESH). Match the surrounding indentation/style. Do NOT run builds. FILES AND WHAT TO GUARD: 1. **src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp** — this includes the excluded DriverMED headers and defines MED functions: - Guard the includes: `#include "DriverMED_R_SMESHDS_Mesh.h"` and `#include "DriverMED_W_SMESHDS_Mesh.h"` (near line 54-55). - Guard the ENTIRE body of `int SMESH_Mesh::MEDToMesh(const char* theFileName, const char* theMeshName)` (starts ~line 535, uses `DriverMED_R_SMESHDS_Mesh`). Under EMSCRIPTEN the function must still be a valid definition (the header declares it) — make the wasm body `throw std::runtime_error("MED format is not supported in the WebAssembly build");` or return an error code (check the return type — it returns `int`; return `Driver_Mesh::DRS_FAIL` if that enum is in scope, else return -1). Keep the signature identical. - Guard the ENTIRE body of `void SMESH_Mesh::ExportMED(...)` (starts ~line 1436, ends ~1494) similarly — wasm body throws `std::runtime_error("MED export is not supported in the WebAssembly build")`. Keep signature. - Also check for any OTHER `SMESH_Mesh::ExportMED` overloads or an `ImportMED`, and any use of `DriverMED_*` / `MED_Factory` / `MEDWrapper` types elsewhere in this file — guard them too. grep the file for `MED` first. 2. **Any OTHER salomesmesh .cpp that is NOT itself a MED_*/DriverMED* file but references MED symbols** — grep `src/3rdParty/salomesmesh/src` for `DriverMED|MED_Factory|MED_V2_2|MEDWrapper|ExportMED|MEDToMesh` excluding the MED_*/DriverMED* files themselves (those are excluded from the build, don't touch them). Guard any stray references. Likely candidates: StdMeshers, SMESH_2smeshpy, drivers registry. Report what you find. 3. **src/Mod/Fem/App/FemMesh.cpp** (the REAL FemMesh, compiled when SMESH is present — do NOT confuse with FemMesh_wasm.cpp) — grep for MED usage: `.ExportMED(`, `MEDToMesh`, `->ExportMED`, `writeMED`, `readMED`, `"MED"`, `.med`. Guard any code path that calls SMESH's MED functions or references MED, under `#ifndef __EMSCRIPTEN__`. FemMesh's read()/write() dispatch by file extension — the `.med`/`.MED` branch(es) that call `getSMesh()->ExportMED(...)` or `MEDToMesh(...)` must be guarded so the .unv/.dat/.stl/.vtk branches still compile. If a whole method (e.g. a `writeMED`/`readMED` helper) is MED-only, guard its body to throw NotImplementedError. Keep all signatures identical. APPROACH: For each file, first `grep -nE 'MED|med\b' <file>` to enumerate, then guard precisely. Prefer guarding the smallest scope (a branch, a function body, an include) over whole files. Every guarded function must remain a complete, valid definition under EMSCRIPTEN (throw or return-error body) because the headers still declare them and other code may reference them. Report: the exact list of (file, line/function, what you guarded, wasm-fallback used). Flag anything ambiguous (e.g. a return type you couldn't determine, or a MED reference you weren't sure was safe to guard). Do NOT edit MED_*.cpp / DriverMED*.cpp themselves. Do NOT run builds.
Fable
thinking
I'll start by searching for MED references in the target files to understand what needs to be guarded.
Fable
I'll start by enumerating MED references in the target files.
Fable
⚙ Bash {"command": "grep -nE 'MED|med\\b' /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "description": "Enumerate MED references in SMESH_Mesh.cpp"}
tool result
54:#include "DriverMED_R_SMESHDS_Mesh.h"
55:#include "DriverMED_W_SMESHDS_Mesh.h"
93:// maximum stored group name length in MED file
94:#define MAX_MED_GROUP_NAME_LENGTH 80
531://function : MEDToMesh
535:int SMESH_Mesh::MEDToMesh(const char* theFileName, const char* theMeshName)
537:  if(MYDEBUG) MESSAGE("MEDToMesh - theFileName = "<<theFileName<<", mesh name = "<<theMeshName);
541:  DriverMED_R_SMESHDS_Mesh myReader;
548:    MESSAGE("MEDToMesh - _myMeshDS->NbNodes() = "<<_myMeshDS->NbNodes());
  …[truncated]
Fable
⚙ Bash {"command": "grep -rnlE 'DriverMED|MED_Factory|MED_V2_2|MEDWrapper|ExportMED|MEDToMesh' /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src | grep -vE 'MED_|DriverMED'", "description": "Find non-MED files referencing M…
tool result
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
⚙ Bash {"command": "grep -nE 'MED|\\.med|writeMED|readMED|ExportMED|MEDToMesh' /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App/FemMesh.cpp", "description": "Enumerate MED references in FemMesh.cpp"}
tool result
1646:        myMesh->MEDToMesh(File.filePath().c_str(), File.fileNamePure().c_str());
2336:        myMesh->ExportMED(
2341:        );  // 2 means MED_V2_2 version!
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
The grep search for non-MED files referencing MED symbols only turned up SMESH_Mesh.cpp, which is what I'm already handling. But I need to verify the exclusion pattern didn't accidentally filter out other files with "MED_" in their path names.

Let me examine the actual code in SMESH_Mesh.cpp to see what needs to be addressed.
Fable
Let me read the relevant sections of SMESH_Mesh.cpp and FemMesh.cpp.
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "offset": 45, "limit": 20}
tool result
45	#include "SMESH_Hypothesis.hxx"
46	#include "SMESH_subMesh.hxx"
47	
48	#include "utilities.h"
49	#include "SMESH_Exception.hxx"
50	#include "DriverDAT_W_SMDS_Mesh.h"
51	#include "DriverDAT_R_SMDS_Mesh.h"
52	#include "DriverGMF_Read.hxx"
53	#include "DriverGMF_Write.hxx"
54	#include "DriverMED_R_SMESHDS_Mesh.h"
55	#include "DriverMED_W_SMESHDS_Mesh.h"
56	#include "DriverSTL_R_SMDS_Mesh.h"
57	#include "DriverSTL_W_SMDS_Mesh.h"
58	#include "DriverUNV_R_SMDS_Mesh.h"
59	#include "DriverUNV_W_SMDS_  …[truncated]
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "offset": 528, "limit": 45}
tool result
528	}
529	
530	//=======================================================================
531	//function : MEDToMesh
532	//purpose  : 
533	//=======================================================================
534	
535	int SMESH_Mesh::MEDToMesh(const char* theFileName, const char* theMeshName)
536	{
537	  if(MYDEBUG) MESSAGE("MEDToMesh - theFileName = "<<theFileName<<", mesh name = "<<theMeshName);
538	  if(_isShapeToMesh)
539	    throw SALOME_Exception(LOCALIZED("a shape to mesh has already b  …[truncated]
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "offset": 1415, "limit": 130}
tool result
1415	}
1416	
1417	//================================================================================
1418	/*!
1419	 * \brief Export the mesh to a med file
1420	 *  \param [in] file - name of the MED file
1421	 *  \param [in] theMeshName - name of this mesh
1422	 *  \param [in] theAutoGroups - boolean parameter for creating/not creating
1423	 *              the groups Group_On_All_Nodes, Group_On_All_Faces, ... ;
1424	 *              the typical use is auto_groups=false.
1425	 *  \param [in] theV  …[truncated]
Fable
thinking
Looking at the code structure, I see there's a MEDToMesh function that returns an int status code, and it uses the DriverMED_R_SMESHDS_Mesh class along with Driver_Mesh status enums like DRS_FAIL to handle error conditions.

The ExportMED function throws a runtime error under EMSCRIPTEN, while ExportSAUV calls ExportMED internally but doesn't directly reference excluded MED symbols, so it will compile and fail at runtime through ExportMED's exception. I should verify that HasDuplicatedGroupNamesMED only uses the MAX_MED_GROUP_NAME_LENGTH macro and doesn't pull in any DriverMED references, and check if there are other ImportMED or ExportMED overloads I need to account for.
Fable
Let me check the `Driver_Mesh::Status` enum, the `HasDuplicatedGroupNamesMED` body, and verify no other non-MED files reference these symbols.
Fable
⚙ Bash {"command": "grep -rn \"enum Status\" /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/ | head; echo \"---DRS_FAIL---\"; grep -rn \"DRS_FAIL\" /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/inc/Dr…
tool result
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/inc/Driver_Mesh.h:51:  enum Status {
---DRS_FAIL---
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/inc/Driver_Mesh.h:58:    DRS_FAIL            // general failure (exception etc.)
/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/inc/Driver_Mesh.h
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "offset": 1393, "limit": 23}
tool result
1393	
1394	//================================================================================
1395	/*!
1396	 * \brief Check if any groups of the same type have equal names
1397	 */
1398	//================================================================================
1399	
1400	bool SMESH_Mesh::HasDuplicatedGroupNamesMED()
1401	{
1402	  //set<string> aGroupNames; // Corrected for Mantis issue 0020028
1403	  map< SMDSAbs_ElementType, set<string> > aGroupNames;
1404	  for ( map<int, SMESH_Group*>  …[truncated]
Fable
⚙ Bash {"command": "grep -rlE 'DriverMED|MED_Factory|MED_V2_2|MEDWrapper|ExportMED|MEDToMesh|MED::' /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src --include='*.cpp' --include='*.hxx' --include='*.h' | grep -vqE '/(MED_|D…
tool result
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
I can return `(int) Driver_Mesh::DRS_FAIL` since `Driver_Mesh` is already in scope through the included header, and the function expects an int cast of the status enum value. I need to step back and run a cleaner search to definitively check whether any non-MED files are actually using these MED symbols.
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src\necho \"=== files matching MED symbols (excluding MED_*/DriverMED* filenames) ===\"\ngrep -rlE 'DriverMED|MED_Factory|MED_V2_2|MEDWrapper|ExportMED|ME…
tool result
=== files matching MED symbols (excluding MED_*/DriverMED* filenames) ===
SMESH/SMESH_Mesh.cpp
=== stdexcept in SMESH_Mesh.cpp? ===
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
I've confirmed that SMESH_Mesh.cpp is the only non-MED file in salomesmesh referencing these symbols, so there's no coupling with StdMeshers or the drivers registry. Since `<stdexcept>` isn't directly included and `runtime_error` isn't used elsewhere, I need to add the include guard to ensure it's available when ExportMED throws the exception.
Fable
⚙ Bash {"command": "grep -nE '#include <' /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp | head -40", "description": "List standard includes at top of SMESH_Mesh.cpp"}
tool result
65:#include <GEOMUtils.hxx>
68:#include <BRepBndLib.hxx>
69:#include <BRepPrimAPI_MakeBox.hxx>
70:#include <Bnd_Box.hxx>
71:#include <TColStd_MapOfInteger.hxx>
72:#include <TopExp.hxx>
73:#include <TopExp_Explorer.hxx>
74:#include <TopTools_ListOfShape.hxx>
75:#include <TopTools_MapOfShape.hxx>
76:#include <TopoDS_Iterator.hxx>
83:#include <boost/thread/thread.hpp>
84:#include <boost/bind/bind.hpp>
86:#include <boost/thread/thread.hpp>
87:#include <boost/bind/bind.hpp>
88://#include <pthread.h>
  …[truncated]
Fable
thinking
I need to check the full include section around lines 65-92 to find the right place to add the `<stdexcept>` header.
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "offset": 76, "limit": 16}
tool result
76	#include <TopoDS_Iterator.hxx>
77	
78	#include "SMESH_TryCatch.hxx" // include after OCCT headers!
79	
80	#include "Utils_ExceptHandlers.hxx"
81	
82	#ifndef WIN32
83	#include <boost/thread/thread.hpp>
84	#include <boost/bind/bind.hpp>
85	#else 
86	#include <boost/thread/thread.hpp>
87	#include <boost/bind/bind.hpp>
88	//#include <pthread.h>
89	#endif
90	
91	using namespace std;
Fable
thinking
I'm starting to make the edits now, beginning with guarding the includes at lines 54-55.
Fable
Now I'll make the edits. First, guard the DriverMED includes.
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "old_string": "#include \"DriverMED_R_SMESHDS_Mesh.h\"\n#include \"DriverMED_W_SMESHDS_Mesh.h\"", "new_str…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
thinking
I'm deciding how to guard the MEDToMesh body and return an error code. Driver_Mesh::DRS_FAIL seems like the cleanest approach since Driver_Mesh is already in scope and returns an int, but I need to verify that Driver_Mesh.h is transitively included in this file before committing to that path. I need to verify whether Driver_Mesh.h remains accessible through the DAT driver includes even after guarding out the MED headers, since returning DRS_FAIL would be cleaner than a magic number like -1.
Fable
Let me verify whether `Driver_Mesh` stays in scope after guarding the MED includes (via the still-included DAT/UNV driver headers).
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh\necho \"=== DriverDAT_R_SMDS_Mesh.h includes ===\"; grep -n '#include' inc/DriverDAT_R_SMDS_Mesh.h 2>/dev/null || find . -name DriverDAT_R_SMDS_Mesh.h -ex…
tool result
=== DriverDAT_R_SMDS_Mesh.h includes ===
26:#include "SMESH_DriverDAT.hxx"
28:#include "Driver_SMDS_Mesh.h"
=== Driver_SMDS_Mesh.h includes ===
26:#include "Driver_Mesh.h"
zshexit:1: parameter HISTDB_FD does not contain a file descriptor
Fable
thinking
I'm tracing through the header includes to confirm that `Driver_Mesh::DRS_FAIL` stays accessible under EMSCRIPTEN, which means I can safely return it from MEDToMesh since the return type is int and DRS_FAIL is an enum value that converts properly.

Now I need to guard the MEDToMesh function body.
Fable
`Driver_Mesh::DRS_FAIL` stays in scope via the still-included DAT driver header. Now I'll guard the MEDToMesh body.
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "old_string": "int SMESH_Mesh::MEDToMesh(const char* theFileName, const char* theMeshName)\n{\n if(MYDEBU…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "old_string": " myReader.GetGroup( aGroupDS );\n }\n }\n }\n return (int) status;\n}", "n…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
thinking
I need to add the `<stdexcept>` header to support throwing `std::runtime_error` in the ExportMED function, so I'll include it near the top with the other standard library headers.
Fable
Now guard the ExportMED body with a throwing wasm fallback. First add `<stdexcept>` for `std::runtime_error`.
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "old_string": "//#include <pthread.h>\n#endif\n\nusing namespace std;", "new_string": "//#include <pthread…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "old_string": " bool theAutoDimension,\n …
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp", "old_string": " // Perform export\n myWriter.Perform();\n\n SMESH_CATCH( SMESH::throwSalomeEx );\n}", "…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
thinking
ExportSAUV calls ExportMED through system() and medutilities, so even though ExportMED throws, the code still compiles since it's defined and ExportSAUV only references ".med" as a string without directly using excluded symbols like DriverMED or MED_Factory. This doesn't require a guard since the task is about excluded symbol references.

I've verified that line 1447's `MED::EVersion(theVersion)` call is now properly guarded within the #else block, removing the MED namespace reference under EMSCRIPTEN. Now I'm checking the SMESH_Mesh.cpp edits for consistency, then moving on to FemMesh.cpp to examine the MEDToMesh read context around line 1646 and the ExportMED write context around line 2336  …
Fable
SMESH_Mesh.cpp is done. Now let me examine FemMesh.cpp around the two MED call sites.
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App/FemMesh.cpp", "offset": 1610, "limit": 70}
tool result
1610	        Py::Callable method(z88mod.getAttr("read"));
1611	        Py::Tuple args(1);
1612	        args.setItem(0, Py::String(FileName));
1613	        Py::Object mesh(method.apply(args));
1614	        if (PyObject_TypeCheck(mesh.ptr(), &FemMeshPy::Type)) {
1615	            FemMeshPy* fempy = static_cast<FemMeshPy*>(mesh.ptr());
1616	            FemMesh* fem = fempy->getFemMeshPtr();
1617	            *this = *fem;  // the deep copy should be avoided, a pointer swap method could be
1618	        …[truncated]
Fable
thinking
I need to guard the `.med` file extension handling in the read function with a preprocessor directive. I'm wrapping the `else if` branch that checks for the `.med` extension in `#ifndef __EMSCRIPTEN__`, so under Emscripten builds, `.med` files will fall through to the next condition instead of being handled by that specific branch.

The structure works cleanly: the `if (unv)` block stays unguarded, then the `.med` branch gets wrapped, and the `.inp` branch follows directly after. Under Emscripten, this creates a valid chain where `.med` files skip that handler and move to the next condition. I could either let them fall through to "Unknown extension" or throw a `NotImplementedError` with a c  …
Fable
⚙ Read {"file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App/FemMesh.cpp", "offset": 2300, "limit": 70}
tool result
2300	        return;
2301	    }
2302	
2303	    // Make sure the reference counter won't become 0 when passing this mesh to its wrapper
2304	    FemMesh* self = const_cast<FemMesh*>(this);
2305	    self->ref();
2306	
2307	    try {
2308	        Py::Module z88mod(module, true);
2309	        Py::Object mesh = Py::asObject(new FemMeshPy(self));
2310	        Py::Callable method(z88mod.getAttr("write"));
2311	        Py::Tuple args(2);
2312	        args.setItem(0, mesh);
2313	        args.setItem(1, P  …[truncated]
Fable
thinking
I need to check what exception headers are available in FemMesh.cpp so I can determine which error type to throw.
Fable
Let me check which Base exception types are available in FemMesh.cpp.
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App\necho \"=== Exception include + usages in FemMesh.cpp ===\"; grep -nE 'Base/Exception|NotImplementedError|Base::RuntimeError|Base::FileException' FemMesh.cpp | hea…
tool result
=== Exception include + usages in FemMesh.cpp ===
61:#include <Base/Exception.h>
1582:            throw Base::FileException("Problems reading file");
1622:            throw Base::FileException("Problems reading file");
1638:        throw Base::FileException("File to load not existing or not readable", File);
1677:        throw Base::FileException("Unknown extension");
1688:            throw Base::FileException("File to load not existing or not readable", File);
2371:        throw Base::FileExcep  …[truncated]
Fable
thinking
I see that `Base::NotImplementedError` is already available through the included header, so I need to add guards around both code branches—keeping the read branch intact while protecting the call with the appropriate guard condition.
Fable
`Base::NotImplementedError` is available. Now guard the read `.med` branch.
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App/FemMesh.cpp", "old_string": " else if (File.hasExtension(\"med\")) {\n myMesh->MEDToMesh(File.filePath().c_str(), File.fileNamePure(…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App/FemMesh.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
⚙ Edit {"replace_all": false, "file_path": "/home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App/FemMesh.cpp", "old_string": " else if (File.hasExtension(\"med\")) {\n Base::Console().log(\"FEM mesh object will be exported to med…
tool result
The file /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App/FemMesh.cpp has been updated successfully. (file state is current in your context — no need to Read it back)
Fable
thinking
Let me verify there are no other MED references scattered throughout FemMesh.cpp by doing a more comprehensive search, checking for any writeMED or readMED helpers, MED strings, .med file extensions, or FemVTKTools MED-related code, plus confirming there are no additional MED includes I might have missed.
Fable
Let me do a final broad sweep of FemMesh.cpp and verify the SMESH_Mesh.cpp edits render correctly.
Fable
⚙ Bash {"command": "cd /home/magik6k/lcad-wasm/freecad-port/FreeCAD/src/Mod/Fem/App\necho \"=== FemMesh.cpp MED (case-insensitive) ===\"; grep -niE 'med' FemMesh.cpp\necho \"=== SMESH_Mesh.cpp remaining unguarded DriverMED/MED:: outside comments =…
tool result
=== FemMesh.cpp MED (case-insensitive) ===
1645:    else if (File.hasExtension("med")) {
1647:        myMesh->MEDToMesh(File.filePath().c_str(), File.fileNamePure().c_str());
1649:        throw Base::NotImplementedError("MED format is not supported in the WebAssembly build");
2338:    else if (File.hasExtension("med")) {
2339:        Base::Console().log("FEM mesh object will be exported to med format.\n");
2341:        myMesh->ExportMED(
2346:        );  // 2 means MED_V2_2 version!
2348:         …[truncated]
Fable
thinking
I'm verifying that all the remaining `DriverMED` and `MED::` references in SMESH_Mesh.cpp are properly protected by preprocessor guards—the include at lines 55-56 is wrapped in `#ifndef __EMSCRIPTEN__`, while the MEDToMesh and ExportMED function calls at lines 553 and 1470-1471 are both inside `#else` branches.
Fable
Let me confirm those remaining references sit inside the guards.
Fable
⚙ Bash {"command": "grep -nE '#ifndef __EMSCRIPTEN__|#ifdef __EMSCRIPTEN__|#else|#endif|DriverMED|MED::EVersion|int SMESH_Mesh::MEDToMesh|void SMESH_Mesh::ExportMED|return \\(int\\) status|myWriter.Perform' /home/magik6k/lcad-wasm/freecad-port/Fre…
tool result
27:#endif
54:#ifndef __EMSCRIPTEN__
55:#include "DriverMED_R_SMESHDS_Mesh.h"
56:#include "DriverMED_W_SMESHDS_Mesh.h"
57:#endif
65:#endif
87:#else 
91:#endif
93:#ifdef __EMSCRIPTEN__
95:#endif
104:#else
106:#endif
175:#else
185:#endif
233:#ifdef __EMSCRIPTEN__
236:#else
240:#else
244:#endif
245:#endif
541:int SMESH_Mesh::MEDToMesh(const char* theFileName, const char* theMeshName)
543:#ifdef __EMSCRIPTEN__
548:#else
553:  DriverMED_R_SMESHDS_Mesh myReader;
582:  return (int) status;
583:#endif //  …[truncated]
Fable
thinking
I'm checking the preprocessor guard structure for both the MEDToMesh and ExportMED functions to ensure the Emscripten conditional compilation is properly set up with matching `#ifdef` and `#endif` directives. I'm verifying there are no other references to the excluded MED symbols across the codebase by checking for ImportMED, additional ExportMED overloads, and helper functions like writeMED or readMED — all searches confirm only the single ExportMED definition in SMESH_Mesh.cpp. Now I'm reconsidering whether ExportSAUV needs guarding since it calls ExportMED, which now throws under EMSCRIPTEN, though the task specifically asked to guard every remaining reference to those excluded symbols.
Fable
All edits are in place and the guard structure verifies correctly. Here is my report. ## Summary All references to the excluded MED symbols are now guarded with `#ifndef/#ifdef __EMSCRIPTEN__`. The UNV/STL/DAT/CGNS/VTK/INP paths are untouched. No MED_*.cpp / DriverMED*.cpp files were edited. No builds were run. ### Enumeration result Across the entire `src/3rdParty/salomesmesh/src` tree, the **only** non-MED file referencing MED symbols is `SMESH_Mesh.cpp`. StdMeshers, SMESH_2smeshpy, and the drivers registry contain **no** stray MED references — nothing to guard there. ### 1. `src/3rdParty/salomesmesh/src/SMESH/SMESH_Mesh.cpp` - **Lines 54–57 — includes:** wrapped `#include "DriverMED_R_SMESHDS_Mesh.h"` and `#include "DriverMED_W_SMESHDS_Mesh.h"` in `#ifndef __EMSCRIPTEN__ … #endif`. - **Added `#include <stdexcept>`** (guarded under `#ifdef __EMSCRIPTEN__`, near the other top-of-file includes) so the wasm fallback can throw. - **`int SMESH_Mesh::MEDToMesh(...)` (def now ~line 541):** body wrapped `#ifdef __EMSCRIPTEN__ … #else … #endif`. wasm branch: `(void)`-casts the two params and `return (int) Driver_Mesh::DRS_FAIL;`. `Driver_Mesh` stays in scope on wasm via the still-included `DriverDAT_R_SMDS_Mesh.h → Driver_SMDS_Mesh.h → Driver_Mesh.h` chain, and `DRS_FAIL` is a valid `Driver_Mesh::Status` enumerator. Signature unchanged. - **`void SMESH_Mesh::ExportMED(...)` (def now ~line 1449):** body wrapped `#ifdef __EMSCRIPTEN__ … #else … #endif`. wasm branch: `(void)`-casts all 7 params and `throw std::runtime_error("MED export is not supported in the WebAssembly build");`. Signature unchanged. Confirmed all remaining `DriverMED_*` / `MED::EVersion` tokens (lines 55–56, 553, 1470–1471) now sit inside guarded blocks. ### 2. `src/Mod/Fem/App/FemMesh.cpp` - **`FemMesh::read()` `.med` branch (~line 1645):** kept the `else if (File.hasExtension("med"))` branch intact; guarded the inner `myMesh->MEDToMesh(...)` call with `#ifndef __EMSCRIPTEN__ … #else throw Base::NotImplementedError("MED format is not supported in the WebAssembly build"); #endif`. - **`FemMesh::write()` `.med` branch (~line 2338):** same treatment around the `myMesh->ExportMED(...)` call (kept the `Base::Console().log` line outside the guard; wasm fallback throws `Base::NotImplementedError("MED export is not supported in the WebAssembly build")`). - `Base::NotImplementedError` is defined in `Base/Exception.h`, which is already `#include`d (line 61). The if/else extension-dispatch chains stay structurally intact in both configs, so the `.unv/.stl/.dat/.inp/.bdf/.vtk/.z88` branches compile and work unchanged. ### Notes / things I deliberately left - **`SMESH_Mesh::ExportSAUV(...)`** (SMESH_Mesh.cpp ~line 1502) calls `ExportMED(...)` and builds a `".med"` filename string, but it references **no** excluded MED symbols directly (only the still-defined `ExportMED` member + `system()`). It therefore compiles on wasm and will throw at runtime via the guarded `ExportMED`. I left it unguarded intentionally (guarding it would be gold-plating). Flagging in case you'd prefer an explicit early throw there. - No second `ExportMED` overload and no `ImportMED` exist. No `writeMED`/`readMED` helper exists in FemMesh.cpp. The `#define MAX_MED_GROUP_NAME_LENGTH 80` and `HasDuplicatedGroupNamesMED()` are pure-string/logic (no excluded symbols) and correctly left alone. Nothing ambiguous remained — return type for MEDToMesh was confirmed `int` and `DRS_FAIL` confirmed in scope.