294 lines
8.4 KiB
Python
294 lines
8.4 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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# Declarations that change for each manager
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MACHEADERFILE = 'Drag.h' # The Apple header file
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MODNAME = '_Drag' # The name of the module
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OBJECTNAME = 'DragObj' # 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 = 'Drag' # The prefix for module-wide routines
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OBJECTTYPE = 'DragRef' # 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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DragRef = OpaqueByValueType(OBJECTTYPE, OBJECTPREFIX)
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DragItemRef = Type("ItemReference", "l")
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# Old names
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DragReference = DragRef
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ItemReference = DragItemRef
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PixMapHandle = OpaqueByValueType("PixMapHandle", "ResObj")
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RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
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AEDesc = OpaqueType('AEDesc')
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AEDesc_ptr = AEDesc
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RGBColor = OpaqueType("RGBColor", "QdRGB")
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FlavorType = OSTypeType("FlavorType")
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DragAttributes = Type("DragAttributes", "l")
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DragBehaviors = Type("DragBehaviors", "l")
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DragImageFlags = Type("DragImageFlags", "l")
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DragImageTranslucency = Type("DragImageTranslucency", "l")
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DragRegionMessage = Type("DragRegionMessage", "h")
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ZoomAcceleration = Type("ZoomAcceleration", "h")
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FlavorFlags = Type("FlavorFlags", "l")
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DragTrackingMessage = Type("DragTrackingMessage", "h")
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includestuff = includestuff + """
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#include <Carbon/Carbon.h>
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/* Callback glue routines */
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DragTrackingHandlerUPP dragglue_TrackingHandlerUPP;
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DragReceiveHandlerUPP dragglue_ReceiveHandlerUPP;
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DragSendDataUPP dragglue_SendDataUPP;
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#if 0
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DragInputUPP dragglue_InputUPP;
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DragDrawingUPP dragglue_DrawingUPP;
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#endif
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#ifdef USE_TOOLBOX_OBJECT_GLUE
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extern PyObject *_DragObj_New(DragRef);
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extern int _DragObj_Convert(PyObject *, DragRef *);
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#define DragObj_New _DragObj_New
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#define DragObj_Convert _DragObj_Convert
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#endif
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"""
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finalstuff = finalstuff + """
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static pascal OSErr
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dragglue_TrackingHandler(DragTrackingMessage theMessage, WindowPtr theWindow,
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void *handlerRefCon, DragReference theDrag)
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{
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PyObject *args, *rv;
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int i;
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args = Py_BuildValue("hO&O&", theMessage, DragObj_New, theDrag, WinObj_WhichWindow, theWindow);
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if ( args == NULL )
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return -1;
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rv = PyEval_CallObject((PyObject *)handlerRefCon, args);
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Py_DECREF(args);
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if ( rv == NULL ) {
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PySys_WriteStderr("Drag: Exception in TrackingHandler\\n");
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PyErr_Print();
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return -1;
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}
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i = -1;
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if ( rv == Py_None )
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i = 0;
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else
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PyArg_Parse(rv, "l", &i);
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Py_DECREF(rv);
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return i;
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}
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static pascal OSErr
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dragglue_ReceiveHandler(WindowPtr theWindow, void *handlerRefCon,
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DragReference theDrag)
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{
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PyObject *args, *rv;
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int i;
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args = Py_BuildValue("O&O&", DragObj_New, theDrag, WinObj_WhichWindow, theWindow);
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if ( args == NULL )
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return -1;
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rv = PyEval_CallObject((PyObject *)handlerRefCon, args);
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Py_DECREF(args);
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if ( rv == NULL ) {
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PySys_WriteStderr("Drag: Exception in ReceiveHandler\\n");
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PyErr_Print();
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return -1;
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}
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i = -1;
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if ( rv == Py_None )
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i = 0;
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else
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PyArg_Parse(rv, "l", &i);
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Py_DECREF(rv);
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return i;
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}
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static pascal OSErr
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dragglue_SendData(FlavorType theType, void *dragSendRefCon,
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ItemReference theItem, DragReference theDrag)
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{
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DragObjObject *self = (DragObjObject *)dragSendRefCon;
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PyObject *args, *rv;
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int i;
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if ( self->sendproc == NULL )
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return -1;
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args = Py_BuildValue("O&l", PyMac_BuildOSType, theType, theItem);
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if ( args == NULL )
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return -1;
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rv = PyEval_CallObject(self->sendproc, args);
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Py_DECREF(args);
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if ( rv == NULL ) {
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PySys_WriteStderr("Drag: Exception in SendDataHandler\\n");
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PyErr_Print();
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return -1;
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}
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i = -1;
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if ( rv == Py_None )
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i = 0;
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else
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PyArg_Parse(rv, "l", &i);
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Py_DECREF(rv);
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return i;
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}
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#if 0
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static pascal OSErr
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dragglue_Input(Point *mouse, short *modifiers,
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void *dragSendRefCon, DragReference theDrag)
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{
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return 0;
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}
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static pascal OSErr
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dragglue_Drawing(xxxx
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void *dragSendRefCon, DragReference theDrag)
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{
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return 0;
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}
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#endif
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"""
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initstuff = initstuff + """
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PyMac_INIT_TOOLBOX_OBJECT_NEW(DragRef, DragObj_New);
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PyMac_INIT_TOOLBOX_OBJECT_CONVERT(DragRef, DragObj_Convert);
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"""
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variablestuff = """
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dragglue_TrackingHandlerUPP = NewDragTrackingHandlerUPP(dragglue_TrackingHandler);
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dragglue_ReceiveHandlerUPP = NewDragReceiveHandlerUPP(dragglue_ReceiveHandler);
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dragglue_SendDataUPP = NewDragSendDataUPP(dragglue_SendData);
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#if 0
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dragglue_InputUPP = NewDragInputUPP(dragglue_Input);
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dragglue_DrawingUPP = NewDragDrawingUPP(dragglue_Drawing);
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#endif
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"""
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class MyObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("""if (itself == NULL) {
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PyErr_SetString(Drag_Error,"Cannot create null Drag");
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return NULL;
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}""")
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def outputFreeIt(self, itselfname):
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## Output("DisposeDrag(%s);", itselfname)
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Output("Py_XDECREF(self->sendproc);")
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## Output("Py_XDECREF(self->inputproc);")
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## Output("Py_XDECREF(self->drawingproc);")
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def outputStructMembers(self):
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GlobalObjectDefinition.outputStructMembers(self)
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Output("PyObject *sendproc;")
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## Output("PyObject *inputproc;")
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## Output("PyObject *drawingproc;")
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def outputInitStructMembers(self):
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GlobalObjectDefinition.outputInitStructMembers(self)
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Output("it->sendproc = NULL;")
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## Output("it->inputproc = NULL;")
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## Output("it->drawingproc = NULL;")
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# Create the generator groups and link them
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module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff, variablestuff)
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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 = OSErrWeakLinkFunctionGenerator
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Method = OSErrWeakLinkMethodGenerator
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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 the populated lists to the generator groups
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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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# Manual generators for the callbacks
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installtracking_body = """
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PyObject *callback;
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WindowPtr theWindow = NULL;
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OSErr _err;
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if ( !PyArg_ParseTuple(_args, "O|O&", &callback, WinObj_Convert, &theWindow) )
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return NULL;
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Py_INCREF(callback); /* Cannot decref later, too bad */
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_err = InstallTrackingHandler(dragglue_TrackingHandlerUPP, theWindow, (void *)callback);
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if (_err != noErr) return PyMac_Error(_err);
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Py_INCREF(Py_None);
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_res = Py_None;
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return _res;
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"""
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installtracking = ManualGenerator("InstallTrackingHandler", installtracking_body)
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module.add(installtracking)
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installreceive_body = """
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PyObject *callback;
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WindowPtr theWindow = NULL;
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OSErr _err;
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if ( !PyArg_ParseTuple(_args, "O|O&", &callback, WinObj_Convert, &theWindow) )
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return NULL;
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Py_INCREF(callback); /* Cannot decref later, too bad */
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_err = InstallReceiveHandler(dragglue_ReceiveHandlerUPP, theWindow, (void *)callback);
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if (_err != noErr) return PyMac_Error(_err);
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Py_INCREF(Py_None);
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_res = Py_None;
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return _res;
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"""
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installreceive = ManualGenerator("InstallReceiveHandler", installreceive_body)
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module.add(installreceive)
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removetracking_body = """
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WindowPtr theWindow = NULL;
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OSErr _err;
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if ( !PyArg_ParseTuple(_args, "|O&", WinObj_Convert, &theWindow) )
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return NULL;
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_err = RemoveTrackingHandler(dragglue_TrackingHandlerUPP, theWindow);
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if (_err != noErr) return PyMac_Error(_err);
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Py_INCREF(Py_None);
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_res = Py_None;
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return _res;
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"""
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removetracking = ManualGenerator("RemoveTrackingHandler", removetracking_body)
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module.add(removetracking)
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removereceive_body = """
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WindowPtr theWindow = NULL;
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OSErr _err;
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if ( !PyArg_ParseTuple(_args, "|O&", WinObj_Convert, &theWindow) )
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return NULL;
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_err = RemoveReceiveHandler(dragglue_ReceiveHandlerUPP, theWindow);
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if (_err != noErr) return PyMac_Error(_err);
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Py_INCREF(Py_None);
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_res = Py_None;
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return _res;
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"""
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removereceive = ManualGenerator("RemoveReceiveHandler", removereceive_body)
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module.add(removereceive)
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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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