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/Mac/Modules/evt/evtsupport.py

http://unladen-swallow.googlecode.com/
Python | 92 lines | 71 code | 9 blank | 12 comment | 0 complexity | d5d5c7fd854e88b3d1da8225796f6297 MD5 | raw file
 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
 6import string
 7
 8# Declarations that change for each manager
 9MACHEADERFILE = 'Events.h'              # The Apple header file
10MODNAME = '_Evt'                                # The name of the module
11OBJECTNAME = 'Event'                    # The basic name of the objects used here
12KIND = 'Record'                         # Usually 'Ptr' or 'Handle'
13
14# The following is *usually* unchanged but may still require tuning
15MODPREFIX = 'Evt'                       # The prefix for module-wide routines
16OBJECTTYPE = OBJECTNAME + KIND          # The C type used to represent them
17OBJECTPREFIX = MODPREFIX + 'Obj'        # The prefix for object methods
18INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
19OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program
20
21from macsupport import *
22
23# Create the type objects
24
25#WindowPeek = OpaqueByValueType("WindowPeek", OBJECTPREFIX)
26
27RgnHandle = FakeType("(RgnHandle)0")
28# XXXX Should be next, but this will break a lot of code...
29# RgnHandle = OpaqueByValueType("RgnHandle", "OptResObj")
30
31KeyMap = ArrayOutputBufferType("KeyMap")
32##MacOSEventKind = Type("MacOSEventKind", "h") # Old-style
33##MacOSEventMask = Type("MacOSEventMask", "h") # Old-style
34EventMask = Type("EventMask", "H")
35EventKind = Type("EventKind", "H")
36
37includestuff = 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
45module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
46
47# Create the generator classes used to populate the lists
48Function = OSErrWeakLinkFunctionGenerator
49##Method = OSErrWeakLinkMethodGenerator
50
51# Create and populate the lists
52functions = []
53execfile(INPUTFILE)
54
55# Move TickCount here, for convenience
56f = Function(UInt32, 'TickCount',
57)
58functions.append(f)
59
60# add the populated lists to the generator groups
61# (in a different wordl the scan program would generate this)
62for f in functions: module.add(f)
63
64WaitNextEvent_body = """
65Boolean _rv;
66EventMask eventMask;
67EventRecord theEvent;
68UInt32 sleep;
69Handle mouseregion = (Handle)0;
70
71if (!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);
83return _res;
84"""
85f = ManualGenerator("WaitNextEvent", WaitNextEvent_body);
86f.docstring = lambda: "(EventMask eventMask, UInt32 sleep [,RegionHandle]) -> (Boolean _rv, EventRecord theEvent)"
87module.add(f)
88
89
90# generate output (open the output file as late as possible)
91SetOutputFileName(OUTPUTFILE)
92module.generate()