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 #define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
  41 """
  42
  43 class MyObjectDefinition(GlobalObjectDefinition):
  44         def outputCheckNewArg(self):
  45                 Output("if (itself == NULL) return PyMac_Error(resNotFound);")
  46         def outputCheckConvertArg(self):
  47                 OutLbrace("if (DlgObj_Check(v))")
  48                 Output("*p_itself = ((WindowObject *)v)->ob_itself;")
  49                 Output("return 1;")
  50                 OutRbrace()
  51                 Out("""
  52                 if (v == Py_None) { *p_itself = NULL; return 1; }
  53                 if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; }
  54                 """)
  55
  56 # From here on it's basically all boiler plate...
  57
  58 # Create the generator groups and link them
  59 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
  60 ##object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
  61 ##module.addobject(object)
  62
  63 # Create the generator classes used to populate the lists
  64 Function = OSErrFunctionGenerator
  65 ##Method = OSErrMethodGenerator
  66
  67 # Create and populate the lists
  68 functions = []
  69 ##methods = []
  70 execfile(INPUTFILE)
  71
  72 # add the populated lists to the generator groups
  73 # (in a different wordl the scan program would generate this)
  74 for f in functions: module.add(f)
  75 ##for f in methods: object.add(f)
  76
  77 WaitNextEvent_body = """
  78 Boolean _rv;
  79 EventMask eventMask;
  80 EventRecord theEvent;
  81 UInt32 sleep;
  82 Handle mouseregion = (Handle)0;
  83
  84 if (!PyArg_ParseTuple(_args, "hl|O&",
  85                       &eventMask,
  86                       &sleep,
  87                       OptResObj_Convert, &mouseregion))
  88         return NULL;
  89 _rv = WaitNextEvent(eventMask,
  90                     &theEvent,
  91                     sleep,
  92                     (RgnHandle)mouseregion);
  93 _res = Py_BuildValue("bO&",
  94                      _rv,
  95                      PyMac_BuildEventRecord, &theEvent);
  96 return _res;
  97 """
  98 f = ManualGenerator("WaitNextEvent", WaitNextEvent_body);
  99 f.docstring = lambda: "(EventMask eventMask, UInt32 sleep [,RegionHandle]) -> (Boolean _rv, EventRecord theEvent)"
 100 module.add(f)
 101
 102 # generate output (open the output file as late as possible)
 103 SetOutputFileName(OUTPUTFILE)
 104 module.generate()
 105