Mac/Modules/evt/evtsupport.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 = 'Events.h'              # The Apple header file
  10 MODNAME = 'Evt'                         # The name of the module
  11 OBJECTNAME = 'Event'                    # The basic name of the objects used here
  12 KIND = 'Record'                         # Usually 'Ptr' or 'Handle'
  13
  14 # The following is *usually* unchanged but may still require tuning
  15 MODPREFIX = MODNAME                     # The prefix for module-wide routines
  16 OBJECTTYPE = OBJECTNAME + KIND          # The C type used to represent them
  17 OBJECTPREFIX = MODPREFIX + 'Obj'        # The prefix for object methods
  18 INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
  19 OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program
  20
  21 from macsupport import *
  22
  23 # Create the type objects
  24
  25 #WindowPeek = OpaqueByValueType("WindowPeek", OBJECTPREFIX)
  26
  27 RgnHandle = FakeType("(RgnHandle)0")
  28 # XXXX Should be next, but this will break a lot of code...
  29 # RgnHandle = OpaqueByValueType("RgnHandle", "OptResObj")
  30
  31 KeyMap = ArrayOutputBufferType("KeyMap")
  32 ##MacOSEventKind = Type("MacOSEventKind", "h") # Old-style
  33 ##MacOSEventMask = Type("MacOSEventMask", "h") # Old-style
  34 EventMask = Type("EventMask", "H")
  35 EventKind = Type("EventKind", "H")
  36
  37 includestuff = includestuff + """
  38 #include <%s>""" % MACHEADERFILE + """
  39 """
  40
  41 class MyObjectDefinition(GlobalObjectDefinition):
  42         def outputCheckNewArg(self):
  43                 Output("if (itself == NULL) return PyMac_Error(resNotFound);")
  44         def outputCheckConvertArg(self):
  45                 OutLbrace("if (DlgObj_Check(v))")
  46                 Output("*p_itself = ((WindowObject *)v)->ob_itself;")
  47                 Output("return 1;")
  48                 OutRbrace()
  49                 Out("""
  50                 if (v == Py_None) { *p_itself = NULL; return 1; }
  51                 if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; }
  52                 """)
  53
  54 # From here on it's basically all boiler plate...
  55
  56 # Create the generator groups and link them
  57 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
  58 ##object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
  59 ##module.addobject(object)
  60
  61 # Create the generator classes used to populate the lists
  62 Function = OSErrFunctionGenerator
  63 ##Method = OSErrMethodGenerator
  64
  65 # Create and populate the lists
  66 functions = []
  67 ##methods = []
  68 execfile(INPUTFILE)
  69
  70 # add the populated lists to the generator groups
  71 # (in a different wordl the scan program would generate this)
  72 for f in functions: module.add(f)
  73 ##for f in methods: object.add(f)
  74
  75 WaitNextEvent_body = """
  76 Boolean _rv;
  77 EventMask eventMask;
  78 EventRecord theEvent;
  79 UInt32 sleep;
  80 Handle mouseregion = (Handle)0;
  81
  82 if (!PyArg_ParseTuple(_args, "Hl|O&",
  83                       &eventMask,
  84                       &sleep,
  85                       OptResObj_Convert, &mouseregion))
  86         return NULL;
  87 _rv = WaitNextEvent(eventMask,
  88                     &theEvent,
  89                     sleep,
  90                     (RgnHandle)mouseregion);
  91 _res = Py_BuildValue("bO&",
  92                      _rv,
  93                      PyMac_BuildEventRecord, &theEvent);
  94 return _res;
  95 """
  96 f = ManualGenerator("WaitNextEvent", WaitNextEvent_body);
  97 f.docstring = lambda: "(EventMask eventMask, UInt32 sleep [,RegionHandle]) -> (Boolean _rv, EventRecord theEvent)"
  98 module.add(f)
  99
 100 # generate output (open the output file as late as possible)
 101 SetOutputFileName(OUTPUTFILE)
 102 module.generate()
 103