1 # This script generates a Python interface for an Apple Macintosh Manager.

     2 # It uses the "bgen" package to generate C code.

     3 # The function specifications are generated by scanning the mamager's header file,

     4 # using the "scantools" package (customized for this particular manager).

     5 

     6 import string

     7 

     8 # Declarations that change for each manager

     9 MACHEADERFILE = 'Menus.h'               # The Apple header file

    10 MODNAME = '_Menu'                       # The name of the module

    11 OBJECTNAME = 'Menu'                     # The basic name of the objects used here

    12 

    13 # The following is *usually* unchanged but may still require tuning

    14 MODPREFIX = 'Menu'                      # The prefix for module-wide routines

    15 OBJECTTYPE = OBJECTNAME + 'Handle'      # The C type used to represent them

    16 OBJECTPREFIX = MODPREFIX + 'Obj'        # The prefix for object methods

    17 INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner

    18 EXTRAFILE = string.lower(MODPREFIX) + 'edit.py' # A similar file but hand-made

    19 OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program

    20 

    21 from macsupport import *

    22 

    23 # Create the type objects

    24 

    25 MenuHandle = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)

    26 MenuRef = MenuHandle

    27 OptMenuRef = OpaqueByValueType(OBJECTTYPE, "Opt" + OBJECTPREFIX)

    28 Handle = OpaqueByValueType("Handle", "ResObj")

    29 MenuBarHandle = OpaqueByValueType("MenuBarHandle", "ResObj")

    30 MenuID = Type("MenuID", "h")

    31 MenuItemIndex = Type("MenuItemIndex", "h")

    32 MenuItemID = Type("MenuItemID", "l")

    33 MenuCommand = Type("MenuCommand", "l")

    34 MenuAttributes = Type("MenuAttributes", "l")

    35 MenuItemAttributes = Type("MenuItemAttributes", "l")

    36 unsigned_char = Type('unsigned char', 'b')

    37 FMFontFamily = Type("FMFontFamily", "h")

    38 FMFontStyle = Type("FMFontStyle", "h")

    39 UniChar = Type("UniChar", "h")

    40 

    41 includestuff = includestuff + """

    42 #include <Carbon/Carbon.h>

    43 

    44 

    45 #ifdef USE_TOOLBOX_OBJECT_GLUE

    46 

    47 extern PyObject *_MenuObj_New(MenuHandle);

    48 extern int _MenuObj_Convert(PyObject *, MenuHandle *);

    49 

    50 #define MenuObj_New _MenuObj_New

    51 #define MenuObj_Convert _MenuObj_Convert

    52 #endif

    53 

    54 #define as_Menu(h) ((MenuHandle)h)

    55 #define as_Resource(h) ((Handle)h)

    56 

    57 

    58 /* Alternative version of MenuObj_New, which returns None for NULL argument */

    59 PyObject *OptMenuObj_New(MenuRef itself)

    60 {

    61         if (itself == NULL) {

    62                 Py_INCREF(Py_None);

    63                 return Py_None;

    64         }

    65         return MenuObj_New(itself);

    66 }

    67 

    68 /* Alternative version of MenuObj_Convert, which returns NULL for a None argument */

    69 int OptMenuObj_Convert(PyObject *v, MenuRef *p_itself)

    70 {

    71         if ( v == Py_None ) {

    72                 *p_itself = NULL;

    73                 return 1;

    74         }

    75         return MenuObj_Convert(v, p_itself);

    76 }

    77 """

    78 

    79 initstuff = initstuff + """

    80         PyMac_INIT_TOOLBOX_OBJECT_NEW(MenuHandle, MenuObj_New);

    81         PyMac_INIT_TOOLBOX_OBJECT_CONVERT(MenuHandle, MenuObj_Convert);

    82 """

    83 

    84 class MyObjectDefinition(PEP253Mixin, GlobalObjectDefinition):

    85     pass

    86 

    87 # Create the generator groups and link them

    88 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)

    89 object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)

    90 module.addobject(object)

    91 

    92 # Create the generator classes used to populate the lists

    93 Function = OSErrWeakLinkFunctionGenerator

    94 Method = OSErrWeakLinkMethodGenerator

    95 

    96 # Create and populate the lists

    97 functions = []

    98 methods = []

    99 execfile(INPUTFILE)

   100 execfile(EXTRAFILE)

   101 

   102 # add the populated lists to the generator groups

   103 for f in functions: module.add(f)

   104 for f in methods: object.add(f)

   105 

   106 # generate output (open the output file as late as possible)

   107 SetOutputFileName(OUTPUTFILE)

   108 module.generate()