Issue/568: Support InfiniCoreParam used in InfiniCoreModule.

python/infinicore/nn/modules/module.py

@@ -16,12 +16,16 @@
 from collections import OrderedDict, namedtuple
 import itertools
 import warnings
+from typing import TYPE_CHECKING
 
 import torch
 
 from typing import Union, Tuple, Any, Iterator, Set, Optional, overload, TypeVar, Mapping, Dict, List
 from torch.utils._python_dispatch import is_traceable_wrapper_subclass
 
+if TYPE_CHECKING:
+    from .parameter import InfiniCoreParameter as Parameter
+
 _EXTRA_STATE_KEY_SUFFIX = '_extra_state'
 
 T = TypeVar('T', bound='InfiniCoreModule')
@@ -46,7 +50,7 @@ class InfiniCoreModule:
     _version: int = 1
 
     training: bool
-    _parameters: Dict[str, Optional[Union[torch.nn.Parameter, 'InfiniCoreParameter']]]
+    _parameters: Dict[str, Optional[Union[torch.nn.Parameter, 'Parameter']]]
     _buffers: Dict[str, Optional[torch.Tensor]]
     _non_persistent_buffers_set: Set[str]
     _modules: Dict[str, Optional['InfiniCoreModule']]
@@ -84,9 +88,9 @@ class InfiniCoreModule:
                         d.discard(name)
 
         params = self.__dict__.get("_parameters")
-        # Support both torch.nn.Parameter and InfiniCoreParameter
-        from .parameter import InfiniCoreParameter
-        if isinstance(value, (torch.nn.Parameter, InfiniCoreParameter)):
+        # Support both torch.nn.Parameter and Parameter (InfiniCoreParameter)
+        from .parameter import InfiniCoreParameter as Parameter
+        if isinstance(value, (torch.nn.Parameter, Parameter)):
             if params is None:
                 raise AttributeError(
                     "cannot assign parameters before Module.__init__() call"
@@ -102,7 +106,7 @@ class InfiniCoreModule:
             if value is not None:
                 raise TypeError(
                     f"cannot assign '{torch.typename(value)}' as parameter '{name}' "
-                    "(torch.nn.Parameter, InfiniCoreParameter or None expected)"
+                    "(torch.nn.Parameter, Parameter or None expected)"
                 )
             self.register_parameter(name, value)
         else:
@@ -210,7 +214,7 @@ class InfiniCoreModule:
         
         self._modules[name] = module
 
-    def register_parameter(self, name: str, param: Optional[torch.nn.Parameter]) -> None:
+    def register_parameter(self, name: str, param: Optional[Union[torch.nn.Parameter, 'Parameter']]) -> None:
         r"""Add a parameter to the module.
 
         The parameter can be accessed as an attribute using given name.
@@ -242,12 +246,12 @@ class InfiniCoreModule:
         if param is None:
             self._parameters[name] = None
         else:
-            # Support both torch.nn.Parameter and InfiniCoreParameter
-            from .parameter import InfiniCoreParameter
-            if not isinstance(param, (torch.nn.Parameter, InfiniCoreParameter)):
+            # Support both torch.nn.Parameter and Parameter (InfiniCoreParameter)
+            from .parameter import InfiniCoreParameter as Parameter
+            if not isinstance(param, (torch.nn.Parameter, Parameter)):
                 raise TypeError(
                     f"cannot assign '{torch.typename(param)}' object to parameter '{name}' "
-                    "(torch.nn.Parameter, InfiniCoreParameter or None required)"
+                    "(torch.nn.Parameter, Parameter or None required)"
                 )
             self._parameters[name] = param
 
@@ -557,7 +561,7 @@ class InfiniCoreModule:
                                self.__class__.__name__, "\n\t".join(error_msgs)))
         return _IncompatibleKeys(missing_keys, unexpected_keys)
 
-    def parameters(self, recurse: bool = True) -> Iterator[torch.nn.Parameter]:
+    def parameters(self, recurse: bool = True) -> Iterator[Union[torch.nn.Parameter, 'Parameter']]:
         r"""Returns an iterator over module parameters.
 
         Args:
@@ -578,7 +582,7 @@ class InfiniCoreModule:
         for name, param in self.named_parameters(recurse=recurse):
             yield param
 
-    def named_parameters(self, prefix: str = '', recurse: bool = True) -> Iterator[Tuple[str, torch.nn.Parameter]]:
+    def named_parameters(self, prefix: str = '', recurse: bool = True) -> Iterator[Tuple[str, Union[torch.nn.Parameter, 'Parameter']]]:
         r"""Returns an iterator over module parameters, yielding both the
         name of the parameter as well as the parameter itself.
 
@@ -845,6 +849,9 @@ class InfiniCoreModule:
                 return False
 
         should_use_swap_tensors = torch.__future__.get_swap_module_params_on_conversion()
+        
+        # Import Parameter (InfiniCoreParameter) for type checking and creation
+        from .parameter import InfiniCoreParameter as Parameter
 
         for key, param in self._parameters.items():
             if param is None:
@@ -859,6 +866,10 @@ class InfiniCoreModule:
             # subclasses may have multiple child tensors so we need to use swap_tensors
             p_should_use_swap_tensors = should_use_swap_tensors or is_traceable_wrapper_subclass(param_applied)
 
+            # Determine the Parameter class to use based on the original parameter type
+            is_infinicore_param = isinstance(param, Parameter)
+            ParamClass = Parameter if is_infinicore_param else torch.nn.Parameter
+
             param_grad = param.grad
             if p_should_use_swap_tensors:
                 try:
@@ -866,7 +877,7 @@ class InfiniCoreModule:
                         # Accessing param.grad makes its at::Tensor's use_count 2, which will prevent swapping.
                         # Decrement use count of the gradient by setting to None
                         param.grad = None
-                    param_applied = torch.nn.Parameter(param_applied, requires_grad=param.requires_grad)
+                    param_applied = ParamClass(param_applied, requires_grad=param.requires_grad)
                     torch.utils.swap_tensors(param, param_applied)
                 except Exception as e:
                     if param_grad is not None:
@@ -877,9 +888,9 @@ class InfiniCoreModule:
                 param.data = param_applied
                 out_param = param
             else:
-                assert isinstance(param, torch.nn.Parameter)
+                assert isinstance(param, (torch.nn.Parameter, Parameter))
                 assert param.is_leaf
-                out_param = torch.nn.Parameter(param_applied, param.requires_grad)
+                out_param = ParamClass(param_applied, param.requires_grad)
                 self._parameters[key] = out_param
 
             if param_grad is not None: