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 = 'Components.h' # The Apple header file 10 MODNAME = '_Cm' # The name of the module 11 12 # The following is *usually* unchanged but may still require tuning 13 MODPREFIX = 'Cm' # The prefix for module-wide routines 14 C_OBJECTPREFIX = 'CmpObj' # The prefix for object methods 15 CI_OBJECTPREFIX = 'CmpInstObj' 16 INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner 17 OUTPUTFILE = MODNAME + "module.c" # The file generated by this program 18 19 from macsupport import * 20 21 # Create the type objects 22 23 includestuff = includestuff + """ 24 #include <Carbon/Carbon.h> 25 26 #ifdef USE_TOOLBOX_OBJECT_GLUE 27 extern PyObject *_CmpObj_New(Component); 28 extern int _CmpObj_Convert(PyObject *, Component *); 29 extern PyObject *_CmpInstObj_New(ComponentInstance); 30 extern int _CmpInstObj_Convert(PyObject *, ComponentInstance *); 31 32 #define CmpObj_New _CmpObj_New 33 #define CmpObj_Convert _CmpObj_Convert 34 #define CmpInstObj_New _CmpInstObj_New 35 #define CmpInstObj_Convert _CmpInstObj_Convert 36 #endif 37 38 /* 39 ** Parse/generate ComponentDescriptor records 40 */ 41 static PyObject * 42 CmpDesc_New(ComponentDescription *itself) 43 { 44 45 return Py_BuildValue("O&O&O&ll", 46 PyMac_BuildOSType, itself->componentType, 47 PyMac_BuildOSType, itself->componentSubType, 48 PyMac_BuildOSType, itself->componentManufacturer, 49 itself->componentFlags, itself->componentFlagsMask); 50 } 51 52 static int 53 CmpDesc_Convert(PyObject *v, ComponentDescription *p_itself) 54 { 55 return PyArg_ParseTuple(v, "O&O&O&ll", 56 PyMac_GetOSType, &p_itself->componentType, 57 PyMac_GetOSType, &p_itself->componentSubType, 58 PyMac_GetOSType, &p_itself->componentManufacturer, 59 &p_itself->componentFlags, &p_itself->componentFlagsMask); 60 } 61 62 """ 63 64 initstuff = initstuff + """ 65 PyMac_INIT_TOOLBOX_OBJECT_NEW(Component, CmpObj_New); 66 PyMac_INIT_TOOLBOX_OBJECT_CONVERT(Component, CmpObj_Convert); 67 PyMac_INIT_TOOLBOX_OBJECT_NEW(ComponentInstance, CmpInstObj_New); 68 PyMac_INIT_TOOLBOX_OBJECT_CONVERT(ComponentInstance, CmpInstObj_Convert); 69 """ 70 71 ComponentDescription = OpaqueType('ComponentDescription', 'CmpDesc') 72 Component = OpaqueByValueType('Component', C_OBJECTPREFIX) 73 ComponentInstance = OpaqueByValueType('ComponentInstance', CI_OBJECTPREFIX) 74 ComponentResult = Type("ComponentResult", "l") 75 76 ComponentResourceHandle = OpaqueByValueType("ComponentResourceHandle", "ResObj") 77 78 class MyCIObjectDefinition(PEP253Mixin, GlobalObjectDefinition): 79 def outputCheckNewArg(self): 80 Output("""if (itself == NULL) { 81 PyErr_SetString(Cm_Error,"NULL ComponentInstance"); 82 return NULL; 83 }""") 84 85 class MyCObjectDefinition(PEP253Mixin, GlobalObjectDefinition): 86 def outputCheckNewArg(self): 87 Output("""if (itself == NULL) { 88 /* XXXX Or should we return None? */ 89 PyErr_SetString(Cm_Error,"No such component"); 90 return NULL; 91 }""") 92 93 def outputCheckConvertArg(self): 94 Output("""if ( v == Py_None ) { 95 *p_itself = 0; 96 return 1; 97 }""") 98 99 # Create the generator groups and link them 100 module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff) 101 ci_object = MyCIObjectDefinition('ComponentInstance', CI_OBJECTPREFIX, 102 'ComponentInstance') 103 c_object = MyCObjectDefinition('Component', C_OBJECTPREFIX, 'Component') 104 module.addobject(ci_object) 105 module.addobject(c_object) 106 107 # Create the generator classes used to populate the lists 108 Function = OSErrWeakLinkFunctionGenerator 109 Method = OSErrWeakLinkMethodGenerator 110 111 # Create and populate the lists 112 functions = [] 113 c_methods = [] 114 ci_methods = [] 115 execfile(INPUTFILE) 116 117 # add the populated lists to the generator groups 118 # (in a different wordl the scan program would generate this) 119 for f in functions: module.add(f) 120 for f in c_methods: c_object.add(f) 121 for f in ci_methods: ci_object.add(f) 122 123 # generate output (open the output file as late as possible) 124 SetOutputFileName(OUTPUTFILE) 125 module.generate() 126