[pypy-svn] r48373 - pypy/branch/clr-module-improvements/pypy/module/clr

[regmee at codespeak.net]

Author: regmee
Date: Wed Nov  7 22:16:22 2007
New Revision: 48373

Added:
   pypy/branch/clr-module-improvements/pypy/module/clr/app_importer.py
Log:
importer hook implementation

Added: pypy/branch/clr-module-improvements/pypy/module/clr/app_importer.py
==============================================================================
--- (empty file)
+++ pypy/branch/clr-module-improvements/pypy/module/clr/app_importer.py	Wed Nov  7 22:16:22 2007
@@ -0,0 +1,61 @@
+
+""" Importer class 
+    # Meta hooks are called at the start of Import Processing
+    # Meta hooks can override the sys.path, frozen modules , built-in modules
+    # to register a Meta Hook simply add importer object to sys.meta_path
+    # a path hook is registered by adding an Importer factory to sys.path_hooks
+    # sys.path_hooks  is a list of Class of the HOOK.
+    # whose __init__ is called when the calleable in the list is obtained.
+    # __init__ cant return anything so some __new__ method should return
+    This is used to enable the "import module" mechanism for .NET classes"""
+
+import imp
+import sys
+        
+class loader(object):
+    def __init__(self):
+        self.Names = [] 
+
+    def load_module(self, fullname):
+        try:
+            return sys.modules[fullname]
+        except KeyError:
+            pass
+        # Now create a new module and append it at the end of the sys.modules list
+        mod = imp.new_module(fullname)
+        mod.__file__ = "<%s>" % self.__class__.__name__
+        mod.__loader__ = self
+        mod.__name__ = fullname
+        '''#if ispkg:
+        if :
+            mod.__path__ = []
+        exec code in mod.__dict__'''
+
+        # add it to the modules list
+        sys.modules[fullname] = mod
+
+        return mod
+
+class importer(object):
+
+    def __init__(self):
+        self.loader = loader()
+
+    def find_module(self, fullname, path):
+        # path will be None for top-level Module and __path__ for sub-modules
+        print fullname
+        if path != None:
+            __path__ = path
+        try:
+            return sys.modules[fullname]
+        except KeyError:
+            pass
+       
+        # Now since the module was not found .. Call the Loader and load it.
+        try:
+            return self.loader
+        except ImportError:
+            print "Import Error exception raised hence you better quit"
+            return None
+
+#def load_cli_class(space, namespace, classname):