# 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 # Declarations that change for each manager MACHEADERFILE = 'Components.h' # The Apple header file MODNAME = '_Cm' # The name of the module # The following is *usually* unchanged but may still require tuning MODPREFIX = 'Cm' # The prefix for module-wide routines C_OBJECTPREFIX = 'CmpObj' # The prefix for object methods CI_OBJECTPREFIX = 'CmpInstObj' INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner OUTPUTFILE = MODNAME + "module.c" # The file generated by this program from macsupport import * # Create the type objects includestuff = includestuff + """ #include <Carbon/Carbon.h> #ifdef USE_TOOLBOX_OBJECT_GLUE extern PyObject *_CmpObj_New(Component); extern int _CmpObj_Convert(PyObject *, Component *); extern PyObject *_CmpInstObj_New(ComponentInstance); extern int _CmpInstObj_Convert(PyObject *, ComponentInstance *); #define CmpObj_New _CmpObj_New #define CmpObj_Convert _CmpObj_Convert #define CmpInstObj_New _CmpInstObj_New #define CmpInstObj_Convert _CmpInstObj_Convert #endif /* ** Parse/generate ComponentDescriptor records */ static PyObject * CmpDesc_New(ComponentDescription *itself) { return Py_BuildValue("O&O&O&ll", PyMac_BuildOSType, itself->componentType, PyMac_BuildOSType, itself->componentSubType, PyMac_BuildOSType, itself->componentManufacturer, itself->componentFlags, itself->componentFlagsMask); } static int CmpDesc_Convert(PyObject *v, ComponentDescription *p_itself) { return PyArg_ParseTuple(v, "O&O&O&ll", PyMac_GetOSType, &p_itself->componentType, PyMac_GetOSType, &p_itself->componentSubType, PyMac_GetOSType, &p_itself->componentManufacturer, &p_itself->componentFlags, &p_itself->componentFlagsMask); } """ initstuff = initstuff + """ PyMac_INIT_TOOLBOX_OBJECT_NEW(Component, CmpObj_New); PyMac_INIT_TOOLBOX_OBJECT_CONVERT(Component, CmpObj_Convert); PyMac_INIT_TOOLBOX_OBJECT_NEW(ComponentInstance, CmpInstObj_New); PyMac_INIT_TOOLBOX_OBJECT_CONVERT(ComponentInstance, CmpInstObj_Convert); """ ComponentDescription = OpaqueType('ComponentDescription', 'CmpDesc') Component = OpaqueByValueType('Component', C_OBJECTPREFIX) ComponentInstance = OpaqueByValueType('ComponentInstance', CI_OBJECTPREFIX) ComponentResult = Type("ComponentResult", "l") ComponentResourceHandle = OpaqueByValueType("ComponentResourceHandle", "ResObj") class MyCIObjectDefinition(PEP253Mixin, GlobalObjectDefinition): def outputCheckNewArg(self): Output("""if (itself == NULL) { PyErr_SetString(Cm_Error,"NULL ComponentInstance"); return NULL; }""") class MyCObjectDefinition(PEP253Mixin, GlobalObjectDefinition): def outputCheckNewArg(self): Output("""if (itself == NULL) { /* XXXX Or should we return None? */ PyErr_SetString(Cm_Error,"No such component"); return NULL; }""") def outputCheckConvertArg(self): Output("""if ( v == Py_None ) { *p_itself = 0; return 1; }""") # Create the generator groups and link them module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff) ci_object = MyCIObjectDefinition('ComponentInstance', CI_OBJECTPREFIX, 'ComponentInstance') c_object = MyCObjectDefinition('Component', C_OBJECTPREFIX, 'Component') module.addobject(ci_object) module.addobject(c_object) # Create the generator classes used to populate the lists Function = OSErrWeakLinkFunctionGenerator Method = OSErrWeakLinkMethodGenerator # Create and populate the lists functions = [] c_methods = [] ci_methods = [] execfile(INPUTFILE) # 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 c_methods: c_object.add(f) for f in ci_methods: ci_object.add(f) # generate output (open the output file as late as possible) SetOutputFileName(OUTPUTFILE) module.generate()