Correct flags on special methods so one can call their python functions directly.

Cython/Compiler/Code.py

@@ -289,15 +289,12 @@ class CCodeWriter:
             doc_code = entry.doc_cname
         else:
             doc_code = 0
-        # Add METH_COEXIST to special methods
-        meth_flags = "METH_VARARGS|METH_KEYWORDS"
-        if get_special_method_signature(entry.name):
-            meth_flags = "METH_VARARGS|METH_KEYWORDS|METH_COEXIST"            
+        if entry.meth_flags:
             self.putln(
                 '{"%s", (PyCFunction)%s, %s, %s}%s' % (
                     entry.name, 
                     entry.func_cname,
-                meth_flags,
+                    entry.meth_flags,
                     doc_code,
                     term))
     

Cython/Compiler/Symtab.py

@@ -7,6 +7,7 @@ from Errors import error, InternalError, warning
 import Options
 import Naming
 from PyrexTypes import *
+import TypeSlots
 from TypeSlots import \
     pyfunction_signature, pymethod_signature, \
     get_special_method_signature, get_property_accessor_signature
@@ -302,6 +303,7 @@ class Scope:
         # Add an entry for a Python function.
         entry = self.declare_var(name, py_object_type, pos)
         entry.signature = pyfunction_signature
+        entry.meth_flags = "METH_VARARGS|METH_KEYWORDS"
         self.pyfunc_entries.append(entry)
         return entry
     
@@ -1088,7 +1090,14 @@ class CClassScope(ClassScope):
             # Special methods get put in the method table with a particular
             # signature declared in advance.
             entry.signature = special_sig
+            if special_sig == TypeSlots.unaryfunc:
+                entry.meth_flags = "METH_NOARGS|METH_COEXIST"
+            elif special_sig == TypeSlots.binaryfunc or special_sig == TypeSlots.ibinaryfunc:
+                entry.meth_flags = "METH_O|METH_COEXIST"
             else:
+                entry.meth_flags = None # should it generate a wrapper function?
+        else:
+            entry.meth_flags = "METH_VARARGS|METH_KEYWORDS"
             entry.signature = pymethod_signature
 
         self.pyfunc_entries.append(entry)
@@ -1172,6 +1181,7 @@ class PropertyScope(Scope):
         if signature:
             entry = self.declare(name, name, py_object_type, pos)
             entry.signature = signature
+            entry.meth_flags = None
             return entry
         else:
             error(pos, "Only __get__, __set__ and __del__ methods allowed "