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Text File | 1996-04-12 | 3.0 KB | 96 lines | [TEXT/Pyth] |
- # 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 = OpaqueByValueType("RgnHandle", "ResObj")
- ControlPartCode = Type("ControlPartCode", "h")
- DragConstraint = Type("DragConstraint", "h")
-
- 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);")
- def outputCleanupStructMembers(self):
- Output("SetCRefCon(self->ob_itself, (long)0); /* Make it forget about us */")
-
- # 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)
- execfile('ctledit.py')
-
- # 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()
-