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()