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 = MODNAME                     # 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 Handle = OpaqueByValueType("Handle", "ResObj")
  28
  29 unsigned_char = Type('unsigned char', 'b')
  30
  31 includestuff = includestuff + """
  32 #include <Devices.h> /* Defines OpenDeskAcc in universal headers */
  33 #include <%s>""" % MACHEADERFILE + """
  34
  35 #define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
  36
  37 #define as_Menu(h) ((MenuHandle)h)
  38 #define as_Resource(h) ((Handle)h)
  39 """
  40
  41 class MyObjectDefinition(GlobalObjectDefinition):
  42         pass
  43
  44 # Create the generator groups and link them
  45 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
  46 object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
  47 module.addobject(object)
  48
  49 # Create the generator classes used to populate the lists
  50 Function = OSErrFunctionGenerator
  51 Method = OSErrMethodGenerator
  52
  53 # Create and populate the lists
  54 functions = []
  55 methods = []
  56 execfile(INPUTFILE)
  57 execfile(EXTRAFILE)
  58
  59 # add the populated lists to the generator groups
  60 for f in functions: module.add(f)
  61 for f in methods: object.add(f)
  62
  63 # generate output (open the output file as late as possible)
  64 SetOutputFileName(OUTPUTFILE)
  65 module.generate()