Ticket #355 - ctypedef class ordering

Cython/Compiler/ModuleNode.py

@@ -811,6 +811,9 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
                 "%s;" %
                     attr.type.declaration_code(attr.cname))
         code.putln(footer)
+        if type.objtypedef_cname is not None:
+            # Only for exposing public typedef name.
+            code.putln("typedef struct %s %s;" % (type.objstruct_cname, type.objtypedef_cname))
 
     def generate_global_declarations(self, env, code, definition):
         code.putln("")

Cython/Compiler/PyrexTypes.py

@@ -368,6 +368,7 @@ class PyExtensionType(PyObjectType):
     #  base_type        PyExtensionType or None
     #  module_name      string or None   Qualified name of defining module
     #  objstruct_cname  string           Name of PyObject struct
+    #  objtypedef_cname string           Name of PyObject struct typedef
     #  typeobj_cname    string or None   C code fragment referring to type object
     #  typeptr_cname    string or None   Name of pointer to external type object
     #  vtabslot_cname   string           Name of C method table member
@@ -378,6 +379,8 @@ class PyExtensionType(PyObjectType):
     is_extension_type = 1
     has_attributes = 1
     
+    objtypedef_cname = None
+    
     def __init__(self, name, typedef_flag, base_type):
         self.name = name
         self.scope = None

Cython/Compiler/Symtab.py

@@ -1010,6 +1010,15 @@ class ModuleScope(Scope):
         module_name = None, base_type = None, objstruct_cname = None,
         typeobj_cname = None, visibility = 'private', typedef_flag = 0, api = 0,
         buffer_defaults = None):
+        # If this is a non-extern typedef class, expose the typedef, but use
+        # the non-typedef struct internally to avoid needing forward
+        # declarations for anonymous structs. 
+        if typedef_flag and visibility != 'extern':
+            objtypedef_cname = objstruct_cname
+            objstruct_cname = None
+            typedef_flag = 0
+        else:
+            objtypedef_cname = None
         #
         #  Look for previous declaration as a type
         #
@@ -1034,6 +1043,8 @@ class ModuleScope(Scope):
             type = PyrexTypes.PyExtensionType(name, typedef_flag, base_type)
             type.pos = pos
             type.buffer_defaults = buffer_defaults
+            if objtypedef_cname is not None:
+                type.objtypedef_cname = objtypedef_cname
             if visibility == 'extern':
                 type.module_name = module_name
             else:

tests/errors/e_ctypedefforward.pyx

 ctypedef struct Spam
-ctypedef class Eggs
 
 cdef extern from *:
 	ctypedef struct Ham
@@ -7,12 +6,7 @@ cdef extern from *:
 ctypedef struct Spam:
 	int i
 
-ctypedef class Eggs:
-	pass
-
 ctypedef struct Spam
-ctypedef class Eggs
 _ERRORS = u"""
 1:0: Forward-referenced type must use 'cdef', not 'ctypedef'
-2:0: Forward-referenced type must use 'cdef', not 'ctypedef'
 """