/Mac/Modules/cm/cmsupport.py
http://unladen-swallow.googlecode.com/ · Python · 125 lines · 95 code · 17 blank · 13 comment · 3 complexity · 0c12d6d43de291c559be1b64e15368cc MD5 · raw file
- # 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()