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Text File | 1996-09-23 | 4.1 KB | 133 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 = 'Windows.h' # The Apple header file
- MODNAME = 'Win' # The name of the module
- OBJECTNAME = 'Window' # 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 + 'Ptr' # 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
- EDITFILE = string.lower(MODPREFIX) + 'edit.py' # The manual definitions
- OUTPUTFILE = MODNAME + "module.c" # The file generated by this program
-
- from macsupport import *
-
- # Create the type objects
-
- WindowPtr = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
- WindowRef = WindowPtr
- WindowPeek = OpaqueByValueType("WindowPeek", OBJECTPREFIX)
- WindowPeek.passInput = lambda name: "(WindowPeek)(%s)" % name
- CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
- GrafPtr = OpaqueByValueType("GrafPtr", "GrafObj")
-
- RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
- PicHandle = OpaqueByValueType("PicHandle", "ResObj")
-
- includestuff = includestuff + """
- #include <%s>""" % MACHEADERFILE + """
-
- #define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
-
- #ifdef HAVE_UNIVERSAL_HEADERS
- #define WindowPeek WindowPtr
- #endif
- """
-
- finalstuff = finalstuff + """
- /* Return the object corresponding to the window, or NULL */
-
- PyObject *
- WinObj_WhichWindow(w)
- WindowPtr w;
- {
- PyObject *it;
-
- /* XXX What if we find a stdwin window or a window belonging
- to some other package? */
- if (w == NULL)
- it = NULL;
- else
- it = (PyObject *) GetWRefCon(w);
- if (it == NULL || ((WindowObject *)it)->ob_itself != w)
- 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("SetWRefCon(itself, (long)it);")
- def outputCheckConvertArg(self):
- OutLbrace("if (DlgObj_Check(v))")
- Output("*p_itself = ((WindowObject *)v)->ob_itself;")
- Output("return 1;")
- OutRbrace()
- Out("""
- if (v == Py_None) { *p_itself = NULL; return 1; }
- if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; }
- """)
- def outputFreeIt(self, itselfname):
- Output("DisposeWindow(%s);", itselfname)
- # From here on it's basically all boiler plate...
-
- # 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 manual routines for converting integer WindowPtr's (as returned by
- # various event routines) and Dialog objects to a WindowObject.
- whichwin_body = """
- long ptr;
-
- if ( !PyArg_ParseTuple(_args, "i", &ptr) )
- return NULL;
- return WinObj_WhichWindow((WindowPtr)ptr);
- """
-
- f = ManualGenerator("WhichWindow", whichwin_body)
- f.docstring = lambda : "Resolve an integer WindowPtr address to a Window object"
-
- functions.append(f)
-
- # And add the routines that access the internal bits of a window struct. They
- # are currently #defined in Windows.h, they will be real routines in Copland
- # (at which time this execfile can go)
- execfile(EDITFILE)
-
- # add the populated lists to the generator groups
- # (in a different wordl the scan program would generate this)
- 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()
-