Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 1 | # This script generates a Python interface for an Apple Macintosh Manager. |
| 2 | # It uses the "bgen" package to generate C code. |
| 3 | # The function specifications are generated by scanning the mamager's header file, |
| 4 | # using the "scantools" package (customized for this particular manager). |
| 5 | |
| 6 | import string |
| 7 | |
| 8 | # Declarations that change for each manager |
| 9 | MACHEADERFILE = 'WASTE.h' # The Apple header file |
| 10 | MODNAME = 'waste' # The name of the module |
| 11 | OBJECTNAME = 'waste' # The basic name of the objects used here |
| 12 | KIND = 'Ptr' # Usually 'Ptr' or 'Handle' |
| 13 | |
| 14 | # The following is *usually* unchanged but may still require tuning |
| 15 | MODPREFIX = MODNAME # The prefix for module-wide routines |
| 16 | OBJECTTYPE = "WEReference" # The C type used to represent them |
| 17 | OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods |
| 18 | INPUTFILE = 'wastegen.py' # The file generated by the scanner |
| 19 | TYPETESTFILE = 'wastetypetest.py' # Another file generated by the scanner |
| 20 | OUTPUTFILE = "wastemodule.c" # The file generated by this program |
| 21 | |
| 22 | from macsupport import * |
| 23 | |
| 24 | # Create the type objects |
| 25 | WEReference = OpaqueByValueType("WEReference", "wasteObj") |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 26 | ExistingWEReference = OpaqueByValueType("WEReference", "ExistingwasteObj") |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 27 | WEObjectReference = OpaqueByValueType("WEObjectReference", "WEOObj") |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 28 | StScrpHandle = OpaqueByValueType("StScrpHandle", "ResObj") |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 29 | RgnHandle = OpaqueByValueType("RgnHandle", "ResObj") |
| 30 | EventModifiers = Type("EventModifiers", "h") |
| 31 | FlavorType = OSTypeType("FlavorType") |
| 32 | WESelector = OSTypeType("WESelector") |
| 33 | |
Jack Jansen | 8ae8e4f | 1996-04-23 16:17:08 +0000 | [diff] [blame] | 34 | OptHandle = OpaqueByValueType("Handle", "OptResObj") |
| 35 | OptSoupHandle = OpaqueByValueType("WESoupHandle", "OptResObj") |
| 36 | OptStScrpHandle = OpaqueByValueType("StScrpHandle", "OptResObj") |
| 37 | |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 38 | WEStyleMode = Type("WEStyleMode", "h") |
| 39 | WEActionKind = Type("WEActionKind", "h") |
| 40 | WEAlignment = Type("WEAlignment", "b") |
| 41 | WESoupHandle = OpaqueByValueType("WESoupHandle", "ResObj") |
| 42 | WERunInfo = OpaqueType("WERunInfo", "RunInfo") |
| 43 | |
| 44 | TextStyle = OpaqueType("TextStyle", "TextStyle") |
| 45 | TextStyle_ptr = TextStyle |
| 46 | LongPt = OpaqueType("LongPt", "LongPt") |
| 47 | LongPt_ptr = LongPt |
| 48 | LongRect = OpaqueType("LongRect", "LongRect") |
| 49 | LongRect_ptr = LongRect |
| 50 | |
| 51 | includestuff = includestuff + """ |
| 52 | #include <%s>""" % MACHEADERFILE + """ |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 53 | #include <WEObjectHandlers.h> |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 54 | |
| 55 | /* Exported by Qdmodule.c: */ |
| 56 | extern PyObject *QdRGB_New(RGBColor *); |
| 57 | extern int QdRGB_Convert(PyObject *, RGBColor *); |
| 58 | |
| 59 | /* Forward declaration */ |
| 60 | staticforward PyObject *WEOObj_New(WEObjectReference); |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 61 | staticforward PyObject *ExistingwasteObj_New(WEReference); |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 62 | |
| 63 | /* |
| 64 | ** Parse/generate TextStyle records |
| 65 | */ |
| 66 | static |
| 67 | PyObject *TextStyle_New(itself) |
| 68 | TextStylePtr itself; |
| 69 | { |
| 70 | |
| 71 | return Py_BuildValue("lllO&", (long)itself->tsFont, (long)itself->tsFace, (long)itself->tsSize, QdRGB_New, |
| 72 | &itself->tsColor); |
| 73 | } |
| 74 | |
| 75 | static |
| 76 | TextStyle_Convert(v, p_itself) |
| 77 | PyObject *v; |
| 78 | TextStylePtr p_itself; |
| 79 | { |
| 80 | long font, face, size; |
| 81 | |
| 82 | if( !PyArg_ParseTuple(v, "lllO&", &font, &face, &size, QdRGB_Convert, &p_itself->tsColor) ) |
| 83 | return 0; |
| 84 | p_itself->tsFont = (short)font; |
| 85 | p_itself->tsFace = (Style)face; |
| 86 | p_itself->tsSize = (short)size; |
| 87 | return 1; |
| 88 | } |
| 89 | |
| 90 | /* |
| 91 | ** Parse/generate RunInfo records |
| 92 | */ |
| 93 | static |
| 94 | PyObject *RunInfo_New(itself) |
| 95 | WERunInfo *itself; |
| 96 | { |
| 97 | |
| 98 | return Py_BuildValue("llhhO&O&", itself->runStart, itself->runEnd, itself->runHeight, |
| 99 | itself->runAscent, TextStyle_New, &itself->runStyle, WEOObj_New, itself->runObject); |
| 100 | } |
| 101 | |
| 102 | /* Conversion of long points and rects */ |
| 103 | int |
| 104 | LongRect_Convert(PyObject *v, LongRect *r) |
| 105 | { |
| 106 | return PyArg_Parse(v, "(llll)", &r->left, &r->top, &r->right, &r->bottom); |
| 107 | } |
| 108 | |
| 109 | PyObject * |
| 110 | LongRect_New(LongRect *r) |
| 111 | { |
| 112 | return Py_BuildValue("(llll)", r->left, r->top, r->right, r->bottom); |
| 113 | } |
| 114 | |
| 115 | |
| 116 | LongPt_Convert(PyObject *v, LongPt *p) |
| 117 | { |
| 118 | return PyArg_Parse(v, "(ll)", &p->h, &p->v); |
| 119 | } |
| 120 | |
| 121 | PyObject * |
| 122 | LongPt_New(LongPt *p) |
| 123 | { |
| 124 | return Py_BuildValue("(ll)", p->h, p->v); |
| 125 | } |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 126 | |
| 127 | /* Stuff for the callbacks: */ |
| 128 | static PyObject *callbackdict; |
| 129 | UniversalProcPtr upp_new_handler, upp_dispose_handler, upp_draw_handler, upp_click_handler; |
| 130 | |
| 131 | static OSErr |
| 132 | any_handler(WESelector what, WEObjectReference who, PyObject *args, PyObject **rv) |
| 133 | { |
| 134 | FlavorType tp; |
| 135 | PyObject *key, *func; |
| 136 | |
| 137 | if ( args == NULL ) return errAECorruptData; |
| 138 | |
| 139 | tp = WEGetObjectType(who); |
| 140 | |
| 141 | if( (key=Py_BuildValue("O&O&", PyMac_BuildOSType, tp, PyMac_BuildOSType, what)) == NULL) |
| 142 | return errAECorruptData; |
| 143 | if( (func = PyDict_GetItem(callbackdict, key)) == NULL ) { |
| 144 | Py_DECREF(key); |
| 145 | return errAEHandlerNotFound; |
| 146 | } |
| 147 | Py_INCREF(func); |
| 148 | *rv = PyEval_CallObject(func, args); |
| 149 | Py_DECREF(func); |
| 150 | Py_DECREF(key); |
| 151 | if ( *rv == NULL ) { |
| 152 | fprintf(stderr, "--Exception in callback: "); |
| 153 | PyErr_Print(); |
| 154 | return errAEReplyNotArrived; |
| 155 | } |
| 156 | return 0; |
| 157 | } |
| 158 | |
| 159 | static pascal OSErr |
| 160 | my_new_handler(Point *objectSize, WEObjectReference objref) |
| 161 | { |
| 162 | PyObject *args=NULL, *rv=NULL; |
| 163 | OSErr err; |
| 164 | |
| 165 | args=Py_BuildValue("(O&)", WEOObj_New, objref); |
| 166 | err = any_handler(weNewHandler, objref, args, &rv); |
| 167 | if (!err) { |
| 168 | if (!PyMac_GetPoint(rv, objectSize) ) |
| 169 | err = errAECoercionFail; |
| 170 | } |
| 171 | if ( args ) Py_DECREF(args); |
| 172 | if ( rv ) Py_DECREF(rv); |
| 173 | return err; |
| 174 | } |
| 175 | |
| 176 | static pascal OSErr |
| 177 | my_dispose_handler(WEObjectReference objref) |
| 178 | { |
| 179 | PyObject *args=NULL, *rv=NULL; |
| 180 | OSErr err; |
| 181 | |
| 182 | args=Py_BuildValue("(O&)", WEOObj_New, objref); |
| 183 | err = any_handler(weDisposeHandler, objref, args, &rv); |
| 184 | if ( args ) Py_DECREF(args); |
| 185 | if ( rv ) Py_DECREF(rv); |
| 186 | return err; |
| 187 | } |
| 188 | |
| 189 | static pascal OSErr |
| 190 | my_draw_handler(Rect *destRect, WEObjectReference objref) |
| 191 | { |
| 192 | PyObject *args=NULL, *rv=NULL; |
| 193 | OSErr err; |
| 194 | |
| 195 | args=Py_BuildValue("O&O&", PyMac_BuildRect, destRect, WEOObj_New, objref); |
| 196 | err = any_handler(weDrawHandler, objref, args, &rv); |
| 197 | if ( args ) Py_DECREF(args); |
| 198 | if ( rv ) Py_DECREF(rv); |
| 199 | return err; |
| 200 | } |
| 201 | |
| 202 | static pascal Boolean |
| 203 | my_click_handler(Point hitPt, EventModifiers modifiers, |
| 204 | unsigned long clickTime, WEObjectReference objref) |
| 205 | { |
| 206 | PyObject *args=NULL, *rv=NULL; |
| 207 | int retvalue; |
| 208 | OSErr err; |
| 209 | |
| 210 | args=Py_BuildValue("O&llO&", PyMac_BuildPoint, hitPt, |
| 211 | (long)modifiers, (long)clickTime, WEOObj_New, objref); |
| 212 | err = any_handler(weClickHandler, objref, args, &rv); |
| 213 | if (!err) |
| 214 | retvalue = PyInt_AsLong(rv); |
| 215 | else |
| 216 | retvalue = 0; |
| 217 | if ( args ) Py_DECREF(args); |
| 218 | if ( rv ) Py_DECREF(rv); |
| 219 | return retvalue; |
| 220 | } |
| 221 | |
| 222 | |
| 223 | """ |
| 224 | finalstuff = finalstuff + """ |
| 225 | /* Return the object corresponding to the window, or NULL */ |
| 226 | |
| 227 | PyObject * |
| 228 | ExistingwasteObj_New(w) |
| 229 | WEReference w; |
| 230 | { |
| 231 | PyObject *it = NULL; |
| 232 | |
| 233 | if (w == NULL) |
| 234 | it = NULL; |
| 235 | else |
| 236 | WEGetInfo(weRefCon, (void *)&it, w); |
| 237 | if (it == NULL || ((wasteObject *)it)->ob_itself != w) |
| 238 | it = Py_None; |
| 239 | Py_INCREF(it); |
| 240 | return it; |
| 241 | } |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 242 | """ |
| 243 | |
| 244 | class WEMethodGenerator(OSErrMethodGenerator): |
| 245 | """Similar to MethodGenerator, but has self as last argument""" |
| 246 | |
| 247 | def parseArgumentList(self, args): |
| 248 | args, a0 = args[:-1], args[-1] |
| 249 | t0, n0, m0 = a0 |
| 250 | if m0 != InMode: |
| 251 | raise ValueError, "method's 'self' must be 'InMode'" |
| 252 | self.itself = Variable(t0, "_self->ob_itself", SelfMode) |
| 253 | FunctionGenerator.parseArgumentList(self, args) |
| 254 | self.argumentList.append(self.itself) |
| 255 | |
| 256 | |
| 257 | |
| 258 | class WEObjectDefinition(GlobalObjectDefinition): |
| 259 | def outputCheckNewArg(self): |
| 260 | Output("""if (itself == NULL) { |
| 261 | PyErr_SetString(waste_Error,"Cannot create null WE"); |
| 262 | return NULL; |
| 263 | }""") |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 264 | def outputInitStructMembers(self): |
| 265 | GlobalObjectDefinition.outputInitStructMembers(self) |
| 266 | Output("WESetInfo(weRefCon, (void *)&it, itself);") |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 267 | def outputFreeIt(self, itselfname): |
| 268 | Output("WEDispose(%s);", itselfname) |
| 269 | |
| 270 | class WEOObjectDefinition(GlobalObjectDefinition): |
| 271 | def outputCheckNewArg(self): |
| 272 | Output("""if (itself == NULL) { |
| 273 | Py_INCREF(Py_None); |
| 274 | return Py_None; |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 275 | }""") |
| 276 | |
| 277 | variablestuff = """ |
| 278 | callbackdict = PyDict_New(); |
| 279 | if (callbackdict == NULL || PyDict_SetItemString(d, "callbacks", callbackdict) != 0) |
| 280 | Py_FatalError("can't initialize Waste.callbackdict"); |
| 281 | upp_new_handler = NewWENewObjectProc(my_new_handler); |
| 282 | upp_dispose_handler = NewWENewObjectProc(my_dispose_handler); |
| 283 | upp_draw_handler = NewWENewObjectProc(my_draw_handler); |
| 284 | upp_click_handler = NewWENewObjectProc(my_click_handler); |
| 285 | """ |
| 286 | |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 287 | |
| 288 | # From here on it's basically all boiler plate... |
| 289 | |
| 290 | # Test types used for existence |
Jack Jansen | 8ae8e4f | 1996-04-23 16:17:08 +0000 | [diff] [blame] | 291 | ## execfile(TYPETESTFILE) |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 292 | |
| 293 | # Create the generator groups and link them |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 294 | module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff, variablestuff) |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 295 | object = WEObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE) |
| 296 | object2 = WEOObjectDefinition("WEO", "WEOObj", "WEObjectReference") |
| 297 | module.addobject(object2) |
| 298 | module.addobject(object) |
| 299 | |
| 300 | # Create the generator classes used to populate the lists |
| 301 | Function = OSErrFunctionGenerator |
| 302 | Method = WEMethodGenerator |
| 303 | Method2 = OSErrMethodGenerator |
| 304 | |
| 305 | # Create and populate the lists |
| 306 | functions = [] |
| 307 | methods = [] |
| 308 | methods2 = [] |
| 309 | execfile(INPUTFILE) |
| 310 | |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 311 | # A function written by hand: |
| 312 | stdhandlers_body = """ |
| 313 | OSErr err; |
| 314 | // install the sample object handlers for pictures and sounds |
| 315 | #define kTypePicture 'PICT' |
| 316 | #define kTypeSound 'snd ' |
| 317 | |
| 318 | if ( !PyArg_ParseTuple(_args, "") ) return NULL; |
| 319 | |
| 320 | if ((err = WEInstallObjectHandler(kTypePicture, weNewHandler, |
| 321 | (UniversalProcPtr) NewWENewObjectProc(HandleNewPicture), NULL)) != noErr) |
| 322 | goto cleanup; |
| 323 | |
| 324 | if ((err = WEInstallObjectHandler(kTypePicture, weDisposeHandler, |
| 325 | (UniversalProcPtr) NewWEDisposeObjectProc(HandleDisposePicture), NULL)) != noErr) |
| 326 | goto cleanup; |
| 327 | |
| 328 | if ((err = WEInstallObjectHandler(kTypePicture, weDrawHandler, |
| 329 | (UniversalProcPtr) NewWEDrawObjectProc(HandleDrawPicture), NULL)) != noErr) |
| 330 | goto cleanup; |
| 331 | |
| 332 | if ((err = WEInstallObjectHandler(kTypeSound, weNewHandler, |
| 333 | (UniversalProcPtr) NewWENewObjectProc(HandleNewSound), NULL)) != noErr) |
| 334 | goto cleanup; |
| 335 | |
| 336 | if ((err = WEInstallObjectHandler(kTypeSound, weDrawHandler, |
| 337 | (UniversalProcPtr) NewWEDrawObjectProc(HandleDrawSound), NULL)) != noErr) |
| 338 | goto cleanup; |
| 339 | |
| 340 | if ((err = WEInstallObjectHandler(kTypeSound, weClickHandler, |
| 341 | (UniversalProcPtr) NewWEClickObjectProc(HandleClickSound), NULL)) != noErr) |
| 342 | goto cleanup; |
| 343 | Py_INCREF(Py_None); |
| 344 | return Py_None; |
| 345 | |
| 346 | cleanup: |
| 347 | return PyMac_Error(err); |
| 348 | """ |
| 349 | |
| 350 | inshandler_body = """ |
| 351 | OSErr err; |
| 352 | FlavorType objectType; |
| 353 | WESelector selector; |
| 354 | PyObject *py_handler; |
| 355 | UniversalProcPtr handler; |
| 356 | WEReference we = NULL; |
| 357 | PyObject *key; |
| 358 | |
| 359 | |
| 360 | if ( !PyArg_ParseTuple(_args, "O&O&O|O&", |
| 361 | PyMac_GetOSType, &objectType, |
| 362 | PyMac_GetOSType, &selector, |
| 363 | &py_handler, |
| 364 | ExistingwasteObj_New, &we) ) return NULL; |
| 365 | |
| 366 | if ( selector == weNewHandler ) handler = upp_new_handler; |
| 367 | else if ( selector == weDisposeHandler ) handler = upp_dispose_handler; |
| 368 | else if ( selector == weDrawHandler ) handler = upp_draw_handler; |
| 369 | else if ( selector == weClickHandler ) handler = upp_click_handler; |
| 370 | else return PyMac_Error(weUndefinedSelectorErr); |
| 371 | |
| 372 | if ((key = Py_BuildValue("O&O&", |
| 373 | PyMac_BuildOSType, objectType, |
| 374 | PyMac_BuildOSType, selector)) == NULL ) |
| 375 | return NULL; |
| 376 | |
| 377 | PyDict_SetItem(callbackdict, key, py_handler); |
| 378 | |
| 379 | err = WEInstallObjectHandler(objectType, selector, handler, we); |
| 380 | if ( err ) return PyMac_Error(err); |
| 381 | Py_INCREF(Py_None); |
| 382 | return Py_None; |
| 383 | """ |
| 384 | |
| 385 | stdhand = ManualGenerator("STDObjectHandlers", stdhandlers_body) |
| 386 | inshand = ManualGenerator("WEInstallObjectHandler", inshandler_body) |
| 387 | |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 388 | # add the populated lists to the generator groups |
| 389 | # (in a different wordl the scan program would generate this) |
| 390 | for f in functions: module.add(f) |
Jack Jansen | 756522f | 1996-05-07 15:24:01 +0000 | [diff] [blame^] | 391 | module.add(stdhand) |
| 392 | module.add(inshand) |
Jack Jansen | 90ecdf4 | 1996-04-16 14:29:15 +0000 | [diff] [blame] | 393 | for f in methods: object.add(f) |
| 394 | for f in methods2: object2.add(f) |
| 395 | |
| 396 | # generate output (open the output file as late as possible) |
| 397 | SetOutputFileName(OUTPUTFILE) |
| 398 | module.generate() |
| 399 | |