Mac/Modules/menu/menusupport.py

   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()