| # This script generates a Python interface for an Apple Macintosh Manager. |
| # It uses the "bgen" package to generate C code. |
| # The function specifications are generated by scanning the mamager's header file, |
| # using the "scantools" package (customized for this particular manager). |
| |
| import string |
| |
| import addpack |
| addpack.addpack(':Tools:bgen:bgen') |
| |
| # Declarations that change for each manager |
| MACHEADERFILE = 'Controls.h' # The Apple header file |
| MODNAME = 'Ctl' # The name of the module |
| OBJECTNAME = 'Control' # The basic name of the objects used here |
| |
| # The following is *usually* unchanged but may still require tuning |
| MODPREFIX = MODNAME # The prefix for module-wide routines |
| OBJECTTYPE = OBJECTNAME + 'Handle' # The C type used to represent them |
| OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods |
| INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner |
| OUTPUTFILE = MODNAME + "module.c" # The file generated by this program |
| |
| from macsupport import * |
| |
| # Create the type objects |
| |
| ControlHandle = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX) |
| ControlRef = ControlHandle |
| ExistingControlHandle = OpaqueByValueType(OBJECTTYPE, "CtlObj_WhichControl", "BUG") |
| |
| RgnHandle = FakeType("theWindow->visRgn") # XXX |
| |
| includestuff = includestuff + """ |
| #include <%s>""" % MACHEADERFILE + """ |
| |
| #define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */ |
| |
| extern PyObject *CtlObj_WhichControl(ControlHandle); /* Forward */ |
| |
| #ifdef THINK_C |
| #define ControlActionUPP ProcPtr |
| #endif |
| """ |
| |
| finalstuff = finalstuff + """ |
| PyObject * |
| CtlObj_WhichControl(ControlHandle c) |
| { |
| PyObject *it; |
| |
| /* XXX What if we find a control belonging to some other package? */ |
| if (c == NULL) |
| it = NULL; |
| else |
| it = (PyObject *) GetCRefCon(c); |
| if (it == NULL || ((ControlObject *)it)->ob_itself != c) |
| it = Py_None; |
| Py_INCREF(it); |
| return it; |
| } |
| """ |
| |
| class MyObjectDefinition(GlobalObjectDefinition): |
| def outputCheckNewArg(self): |
| Output("if (itself == NULL) return PyMac_Error(resNotFound);") |
| def outputInitStructMembers(self): |
| GlobalObjectDefinition.outputInitStructMembers(self) |
| Output("SetCRefCon(itself, (long)it);") |
| |
| # Create the generator groups and link them |
| module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff) |
| object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE) |
| module.addobject(object) |
| |
| # Create the generator classes used to populate the lists |
| Function = OSErrFunctionGenerator |
| Method = OSErrMethodGenerator |
| |
| # Create and populate the lists |
| functions = [] |
| methods = [] |
| execfile(INPUTFILE) |
| |
| # add the populated lists to the generator groups |
| for f in functions: module.add(f) |
| for f in methods: object.add(f) |
| |
| # generate output (open the output file as late as possible) |
| SetOutputFileName(OUTPUTFILE) |
| module.generate() |