mirror of https://github.com/python/cpython
125 lines
3.7 KiB
Python
125 lines
3.7 KiB
Python
# This script generates a Python interface for an Apple Macintosh Manager.
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# It uses the "bgen" package to generate C code.
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# The function specifications are generated by scanning the mamager's header file,
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# using the "scantools" package (customized for this particular manager).
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import string
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import addpack
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addpack.addpack(':Tools:bgen:bgen')
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# Declarations that change for each manager
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MACHEADERFILE = 'Windows.h' # The Apple header file
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MODNAME = 'Win' # The name of the module
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OBJECTNAME = 'Window' # The basic name of the objects used here
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# The following is *usually* unchanged but may still require tuning
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MODPREFIX = MODNAME # The prefix for module-wide routines
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OBJECTTYPE = OBJECTNAME + 'Ptr' # The C type used to represent them
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OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods
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INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
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OUTPUTFILE = MODNAME + "module.c" # The file generated by this program
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from macsupport import *
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# Create the type objects
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WindowPtr = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
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WindowRef = WindowPtr
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WindowPeek = OpaqueByValueType("WindowPeek", OBJECTPREFIX)
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WindowPeek.passInput = lambda name: "(WindowPeek)(%s)" % name
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#RgnHandle = FakeType("theWindow->updtRgn") # XXX
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includestuff = includestuff + """
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#include <%s>""" % MACHEADERFILE + """
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#define resNotFound -192 /* Can't include <Errors.h> because of Python's "errors.h" */
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#ifdef HAVE_UNIVERSAL_HEADERS
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#define WindowPeek WindowPtr
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#endif
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"""
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finalstuff = finalstuff + """
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/* Return the object corresponding to the window, or NULL */
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PyObject *
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WinObj_WhichWindow(w)
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WindowPtr w;
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{
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PyObject *it;
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/* XXX What if we find a stdwin window or a window belonging
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to some other package? */
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if (w == NULL)
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it = NULL;
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else
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it = (PyObject *) GetWRefCon(w);
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if (it == NULL || ((WindowObject *)it)->ob_itself != w)
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it = Py_None;
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Py_INCREF(it);
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return it;
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}
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"""
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class MyObjectDefinition(GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("if (itself == NULL) return PyMac_Error(resNotFound);")
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def outputInitStructMembers(self):
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GlobalObjectDefinition.outputInitStructMembers(self)
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Output("SetWRefCon(itself, (long)it);")
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def outputCheckConvertArg(self):
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OutLbrace("if (DlgObj_Check(v))")
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Output("*p_itself = ((WindowObject *)v)->ob_itself;")
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Output("return 1;")
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OutRbrace()
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Out("""
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if (v == Py_None) { *p_itself = NULL; return 1; }
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if (PyInt_Check(v)) { *p_itself = (WindowPtr)PyInt_AsLong(v); return 1; }
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""")
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def outputFreeIt(self, itselfname):
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Output("DisposeWindow(%s);", itselfname)
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# From here on it's basically all boiler plate...
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# Create the generator groups and link them
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module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
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object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
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module.addobject(object)
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# Create the generator classes used to populate the lists
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Function = OSErrFunctionGenerator
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Method = OSErrMethodGenerator
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# Create and populate the lists
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functions = []
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methods = []
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execfile(INPUTFILE)
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# Add a manual routine for converting integer WindowPtr's (as returned by
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# various event routines) to a WindowObject.
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whichwin_body = """
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long ptr;
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if ( !PyArg_ParseTuple(_args, "i", &ptr) )
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return NULL;
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return WinObj_WhichWindow((WindowPtr)ptr);
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"""
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f = ManualGenerator("WhichWindow", whichwin_body)
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f.docstring = lambda : "Resolve an integer WindowPtr address to a Window object"
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functions.append(f)
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# add the populated lists to the generator groups
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# (in a different wordl the scan program would generate this)
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for f in functions: module.add(f)
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for f in methods: object.add(f)
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# generate output (open the output file as late as possible)
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SetOutputFileName(OUTPUTFILE)
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module.generate()
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