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      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 = 'Evt'                       # 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 <Carbon/Carbon.h>
     39 
     40 """
     41 
     42 # From here on it's basically all boiler plate...
     43 
     44 # Create the generator groups and link them
     45 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
     46 
     47 # Create the generator classes used to populate the lists
     48 Function = OSErrWeakLinkFunctionGenerator
     49 ##Method = OSErrWeakLinkMethodGenerator
     50 
     51 # Create and populate the lists
     52 functions = []
     53 execfile(INPUTFILE)
     54 
     55 # Move TickCount here, for convenience
     56 f = Function(UInt32, 'TickCount',
     57 )
     58 functions.append(f)
     59 
     60 # add the populated lists to the generator groups
     61 # (in a different wordl the scan program would generate this)
     62 for f in functions: module.add(f)
     63 
     64 WaitNextEvent_body = """
     65 Boolean _rv;
     66 EventMask eventMask;
     67 EventRecord theEvent;
     68 UInt32 sleep;
     69 Handle mouseregion = (Handle)0;
     70 
     71 if (!PyArg_ParseTuple(_args, "Hl|O&",
     72                       &eventMask,
     73                       &sleep,
     74                       OptResObj_Convert, &mouseregion))
     75         return NULL;
     76 _rv = WaitNextEvent(eventMask,
     77                     &theEvent,
     78                     sleep,
     79                     (RgnHandle)mouseregion);
     80 _res = Py_BuildValue("bO&",
     81                      _rv,
     82                      PyMac_BuildEventRecord, &theEvent);
     83 return _res;
     84 """
     85 f = ManualGenerator("WaitNextEvent", WaitNextEvent_body);
     86 f.docstring = lambda: "(EventMask eventMask, UInt32 sleep [,RegionHandle]) -> (Boolean _rv, EventRecord theEvent)"
     87 module.add(f)
     88 
     89 
     90 # generate output (open the output file as late as possible)
     91 SetOutputFileName(OUTPUTFILE)
     92 module.generate()
     93