446 lines
12 KiB
Python
446 lines
12 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 = 'WASTE.h' # The Apple header file
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MODNAME = 'waste' # The name of the module
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OBJECTNAME = 'waste' # The basic name of the objects used here
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KIND = 'Ptr' # Usually 'Ptr' or 'Handle'
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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 = "WEReference" # The C type used to represent them
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OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods
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INPUTFILE = 'wastegen.py' # The file generated by the scanner
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TYPETESTFILE = 'wastetypetest.py' # Another file generated by the scanner
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OUTPUTFILE = "wastemodule.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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WEReference = OpaqueByValueType("WEReference", "wasteObj")
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ExistingWEReference = OpaqueByValueType("WEReference", "ExistingwasteObj")
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WEObjectReference = OpaqueByValueType("WEObjectReference", "WEOObj")
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StScrpHandle = OpaqueByValueType("StScrpHandle", "ResObj")
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RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
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EventModifiers = Type("EventModifiers", "H")
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FlavorType = OSTypeType("FlavorType")
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WESelector = OSTypeType("WESelector")
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OptHandle = OpaqueByValueType("Handle", "OptResObj")
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OptSoupHandle = OpaqueByValueType("WESoupHandle", "OptResObj")
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OptStScrpHandle = OpaqueByValueType("StScrpHandle", "OptResObj")
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WEStyleMode = Type("WEStyleMode", "H")
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WERulerMode = Type("WERulerMode", "l")
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WEActionKind = Type("WEActionKind", "h")
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WEAlignment = Type("WEAlignment", "B")
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WEEdge = Type("WEEdge", "B")
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WEDirection = Type("WEDirection", "h")
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WESoupHandle = OpaqueByValueType("WESoupHandle", "ResObj")
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WEFontTableHandle = OpaqueByValueType("WEFontTableHandle", "ResObj")
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WEFontTableHandle
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WERunInfo = OpaqueType("WERunInfo", "RunInfo")
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AppleEvent = OpaqueType('AppleEvent', 'AEDesc')
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AppleEvent_ptr = OpaqueType('AppleEvent', 'AEDesc')
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TextStyle = OpaqueType("TextStyle", "TextStyle")
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TextStyle_ptr = TextStyle
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LongPt = OpaqueType("LongPt", "LongPt")
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LongPt_ptr = LongPt
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LongRect = OpaqueType("LongRect", "LongRect")
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LongRect_ptr = LongRect
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TextEncodingVariant = Type("TextEncodingVariant", "l")
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TextEncodingFormat = Type("TextEncodingFormat", "l")
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includestuff = includestuff + """
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#include <%s>""" % MACHEADERFILE + """
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#include <WEObjectHandlers.h>
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#include <WETabs.h>
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/* Exported by Qdmodule.c: */
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extern PyObject *QdRGB_New(RGBColor *);
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extern int QdRGB_Convert(PyObject *, RGBColor *);
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/* Exported by AEModule.c: */
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extern PyObject *AEDesc_New(AppleEvent *);
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extern int AEDesc_Convert(PyObject *, AppleEvent *);
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/* Forward declaration */
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static PyObject *WEOObj_New(WEObjectReference);
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static PyObject *ExistingwasteObj_New(WEReference);
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/*
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** Parse/generate TextStyle records
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*/
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static PyObject *
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TextStyle_New(TextStylePtr itself)
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{
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return Py_BuildValue("lllO&", (long)itself->tsFont, (long)itself->tsFace, (long)itself->tsSize, QdRGB_New,
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&itself->tsColor);
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}
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static int
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TextStyle_Convert(PyObject *v, TextStylePtr p_itself)
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{
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long font, face, size;
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if( !PyArg_ParseTuple(v, "lllO&", &font, &face, &size, QdRGB_Convert, &p_itself->tsColor) )
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return 0;
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p_itself->tsFont = (short)font;
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p_itself->tsFace = (Style)face;
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p_itself->tsSize = (short)size;
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return 1;
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}
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/*
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** Parse/generate RunInfo records
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*/
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static PyObject *
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RunInfo_New(WERunInfo *itself)
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{
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return Py_BuildValue("llhhO&O&", itself->runStart, itself->runEnd, itself->runHeight,
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itself->runAscent, TextStyle_New, &itself->runStyle, WEOObj_New, itself->runObject);
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}
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/* Conversion of long points and rects */
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int
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LongRect_Convert(PyObject *v, LongRect *r)
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{
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return PyArg_Parse(v, "(llll)", &r->left, &r->top, &r->right, &r->bottom);
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}
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PyObject *
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LongRect_New(LongRect *r)
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{
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return Py_BuildValue("(llll)", r->left, r->top, r->right, r->bottom);
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}
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int
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LongPt_Convert(PyObject *v, LongPt *p)
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{
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return PyArg_Parse(v, "(ll)", &p->h, &p->v);
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}
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PyObject *
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LongPt_New(LongPt *p)
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{
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return Py_BuildValue("(ll)", p->h, p->v);
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}
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/* Stuff for the callbacks: */
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static PyObject *callbackdict;
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WENewObjectUPP upp_new_handler;
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WEDisposeObjectUPP upp_dispose_handler;
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WEDrawObjectUPP upp_draw_handler;
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WEClickObjectUPP upp_click_handler;
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static OSErr
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any_handler(WESelector what, WEObjectReference who, PyObject *args, PyObject **rv)
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{
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FlavorType tp;
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PyObject *key, *func;
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if ( args == NULL ) return errAECorruptData;
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tp = WEGetObjectType(who);
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if( (key=Py_BuildValue("O&O&", PyMac_BuildOSType, tp, PyMac_BuildOSType, what)) == NULL)
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return errAECorruptData;
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if( (func = PyDict_GetItem(callbackdict, key)) == NULL ) {
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Py_DECREF(key);
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return errAEHandlerNotFound;
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}
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Py_INCREF(func);
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*rv = PyEval_CallObject(func, args);
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Py_DECREF(func);
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Py_DECREF(key);
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if ( *rv == NULL ) {
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PySys_WriteStderr("--Exception in callback: ");
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PyErr_Print();
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return errAEReplyNotArrived;
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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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my_new_handler(Point *objectSize, WEObjectReference objref)
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{
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PyObject *args=NULL, *rv=NULL;
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OSErr err;
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args=Py_BuildValue("(O&)", WEOObj_New, objref);
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err = any_handler(weNewHandler, objref, args, &rv);
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if (!err) {
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if (!PyMac_GetPoint(rv, objectSize) )
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err = errAECoercionFail;
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}
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if ( args ) {
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Py_DECREF(args);
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}
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if ( rv ) {
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Py_DECREF(rv);
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}
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return err;
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}
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static pascal OSErr
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my_dispose_handler(WEObjectReference objref)
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{
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PyObject *args=NULL, *rv=NULL;
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OSErr err;
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args=Py_BuildValue("(O&)", WEOObj_New, objref);
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err = any_handler(weDisposeHandler, objref, args, &rv);
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if ( args ) {
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Py_DECREF(args);
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}
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if ( rv ) {
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Py_DECREF(rv);
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}
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return err;
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}
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static pascal OSErr
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my_draw_handler(const Rect *destRect, WEObjectReference objref)
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{
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PyObject *args=NULL, *rv=NULL;
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OSErr err;
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args=Py_BuildValue("O&O&", PyMac_BuildRect, destRect, WEOObj_New, objref);
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err = any_handler(weDrawHandler, objref, args, &rv);
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if ( args ) {
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Py_DECREF(args);
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}
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if ( rv ) {
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Py_DECREF(rv);
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}
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return err;
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}
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static pascal Boolean
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my_click_handler(Point hitPt, EventModifiers modifiers,
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unsigned long clickTime, WEObjectReference objref)
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{
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PyObject *args=NULL, *rv=NULL;
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int retvalue;
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OSErr err;
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args=Py_BuildValue("O&llO&", PyMac_BuildPoint, hitPt,
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(long)modifiers, (long)clickTime, WEOObj_New, objref);
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err = any_handler(weClickHandler, objref, args, &rv);
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if (!err)
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retvalue = PyInt_AsLong(rv);
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else
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retvalue = 0;
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if ( args ) {
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Py_DECREF(args);
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}
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if ( rv ) {
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Py_DECREF(rv);
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}
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return retvalue;
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}
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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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ExistingwasteObj_New(w)
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WEReference w;
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{
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PyObject *it = NULL;
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if (w == NULL)
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it = NULL;
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else
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WEGetInfo(weRefCon, (void *)&it, w);
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if (it == NULL || ((wasteObject *)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 WEMethodGenerator(OSErrMethodGenerator):
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"""Similar to MethodGenerator, but has self as last argument"""
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def parseArgumentList(self, args):
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args, a0 = args[:-1], args[-1]
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t0, n0, m0 = a0
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if m0 != InMode:
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raise ValueError, "method's 'self' must be 'InMode'"
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self.itself = Variable(t0, "_self->ob_itself", SelfMode)
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FunctionGenerator.parseArgumentList(self, args)
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self.argumentList.append(self.itself)
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class WEObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("""if (itself == NULL) {
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PyErr_SetString(waste_Error,"Cannot create null WE");
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return NULL;
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}""")
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def outputInitStructMembers(self):
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GlobalObjectDefinition.outputInitStructMembers(self)
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Output("WESetInfo(weRefCon, (void *)&it, itself);")
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def outputFreeIt(self, itselfname):
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Output("WEDispose(%s);", itselfname)
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class WEOObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
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def outputCheckNewArg(self):
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Output("""if (itself == NULL) {
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Py_INCREF(Py_None);
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return Py_None;
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}""")
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variablestuff = """
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callbackdict = PyDict_New();
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if (callbackdict == NULL || PyDict_SetItemString(d, "callbacks", callbackdict) != 0)
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return;
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upp_new_handler = NewWENewObjectProc(my_new_handler);
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upp_dispose_handler = NewWEDisposeObjectProc(my_dispose_handler);
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upp_draw_handler = NewWEDrawObjectProc(my_draw_handler);
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upp_click_handler = NewWEClickObjectProc(my_click_handler);
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"""
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# From here on it's basically all boiler plate...
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# Test types used for existence
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## execfile(TYPETESTFILE)
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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 = WEObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
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object2 = WEOObjectDefinition("WEO", "WEOObj", "WEObjectReference")
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module.addobject(object2)
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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 = WEMethodGenerator
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Method2 = OSErrMethodGenerator
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# Create and populate the lists
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functions = []
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methods = []
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methods2 = []
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execfile(INPUTFILE)
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# A function written by hand:
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stdhandlers_body = """
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OSErr err;
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// install the sample object handlers for pictures and sounds
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#define kTypePicture 'PICT'
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#define kTypeSound 'snd '
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if ( !PyArg_ParseTuple(_args, "") ) return NULL;
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if ((err = WEInstallObjectHandler(kTypePicture, weNewHandler,
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(UniversalProcPtr) NewWENewObjectProc(HandleNewPicture), NULL)) != noErr)
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goto cleanup;
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if ((err = WEInstallObjectHandler(kTypePicture, weDisposeHandler,
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(UniversalProcPtr) NewWEDisposeObjectProc(HandleDisposePicture), NULL)) != noErr)
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goto cleanup;
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if ((err = WEInstallObjectHandler(kTypePicture, weDrawHandler,
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(UniversalProcPtr) NewWEDrawObjectProc(HandleDrawPicture), NULL)) != noErr)
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goto cleanup;
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if ((err = WEInstallObjectHandler(kTypeSound, weNewHandler,
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(UniversalProcPtr) NewWENewObjectProc(HandleNewSound), NULL)) != noErr)
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goto cleanup;
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if ((err = WEInstallObjectHandler(kTypeSound, weDrawHandler,
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(UniversalProcPtr) NewWEDrawObjectProc(HandleDrawSound), NULL)) != noErr)
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goto cleanup;
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if ((err = WEInstallObjectHandler(kTypeSound, weClickHandler,
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(UniversalProcPtr) NewWEClickObjectProc(HandleClickSound), NULL)) != noErr)
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goto cleanup;
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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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cleanup:
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return PyMac_Error(err);
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"""
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inshandler_body = """
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OSErr err;
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FlavorType objectType;
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WESelector selector;
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PyObject *py_handler;
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UniversalProcPtr handler;
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WEReference we = NULL;
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PyObject *key;
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if ( !PyArg_ParseTuple(_args, "O&O&O|O&",
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PyMac_GetOSType, &objectType,
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PyMac_GetOSType, &selector,
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&py_handler,
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WEOObj_Convert, &we) ) return NULL;
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if ( selector == weNewHandler ) handler = (UniversalProcPtr)upp_new_handler;
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else if ( selector == weDisposeHandler ) handler = (UniversalProcPtr)upp_dispose_handler;
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else if ( selector == weDrawHandler ) handler = (UniversalProcPtr)upp_draw_handler;
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else if ( selector == weClickHandler ) handler = (UniversalProcPtr)upp_click_handler;
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else return PyMac_Error(weUndefinedSelectorErr);
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if ((key = Py_BuildValue("O&O&",
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PyMac_BuildOSType, objectType,
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PyMac_BuildOSType, selector)) == NULL )
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return NULL;
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PyDict_SetItem(callbackdict, key, py_handler);
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err = WEInstallObjectHandler(objectType, selector, handler, we);
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if ( err ) 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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stdhand = ManualGenerator("STDObjectHandlers", stdhandlers_body)
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inshand = ManualGenerator("WEInstallObjectHandler", inshandler_body)
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# Tab hook handlers. Could be parsed from WETabs.h, but this is just as simple.
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f = Method(OSErr, 'WEInstallTabHooks', (WEReference, 'we', InMode))
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methods.append(f)
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f = Method(OSErr, 'WERemoveTabHooks', (WEReference, 'we', InMode))
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methods.append(f)
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f = Method(Boolean, 'WEIsTabHooks', (WEReference, 'we', InMode))
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methods.append(f)
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f = Method(SInt16, 'WEGetTabSize', (WEReference, 'we', InMode))
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methods.append(f)
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f = Method(OSErr, 'WESetTabSize', (SInt16, 'tabWidth', InMode), (WEReference, 'we', InMode))
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methods.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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module.add(stdhand)
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module.add(inshand)
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for f in methods: object.add(f)
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for f in methods2: object2.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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