Add initial support for user types in Python

typon/trans/tests/pyext.post.py

 import pyext
 
-print("Imported:", pyext.add(5, 3), pyext.fibo(10), pyext.squares())
\ No newline at end of file
+print("Imported:", pyext.add(5, 3), pyext.fibo(10), pyext.squares(), pyext.Person("jean", 123))
\ No newline at end of file

typon/trans/tests/pyext.py

@@ -2,8 +2,17 @@
 # extension
 
 import numpy as np
+from dataclasses import dataclass
 
-def add(x, y) -> int:
+@dataclass
+class Person:
+    name: str
+    age: int
+
+    def afficher(self):
+        print(self.name, self.age)
+
+def add(x, y):
     return x + y
 
 def fibo(n):
@@ -16,4 +25,4 @@ def squares() -> list[int]:
     return np.square([x for x in range(5)])
 
 if __name__ == "__main__":
-    print("Python:", add(5, 3), fibo(10), squares())
\ No newline at end of file
+    print("Python:", add(5, 3), fibo(10), squares(), Person("jean", 123))
\ No newline at end of file

typon/trans/transpiler/phases/emit_cpp/module.py

@@ -59,7 +59,7 @@ class ModuleVisitor(BlockVisitor):
             yield f"> arg{i}"
 
         yield ") {"
-        yield "SubInterpreter lock{};"
+        yield "InterpGuard guard{};"
         yield f"return py::module_::import(\"{mod}\").attr(\"{name}\")("
         for i, argty in enumerate(fty.parameters):
             if i != 0:
@@ -122,6 +122,21 @@ class ModuleVisitorExt(NodeVisitor):
         #yield f'm.def("{node.name}", CoroWrapper(PROGRAMNS::{node.name}));'
         yield f'm.def("{node.name}", PROGRAMNS::{node.name});'
 
+    def visit_ClassDef(self, node: ast.ClassDef) -> Iterable[str]:
+        yield f"py::class_<PROGRAMNS::{node.name}_s::py_type>(m, \"{node.name}\")"
+        init = node.type.fields["__init__"].type.resolve().remove_self()
+        init_params = init.parameters
+        yield ".def(py::init<"
+        for i, argty in enumerate(init_params):
+            if i != 0:
+                yield ", "
+            yield from self.visit(argty)
+        yield ">())"
+        yield f'.def("__repr__", [](const PROGRAMNS::{node.name}_s::py_type& self)'
+        yield "{ return repr(self); })"
+        yield ";"
+        pass
+
     def visit_AST(self, node: ast.AST) -> Iterable[str]:
         yield from ()
         pass