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/Mac/Modules/osa/osasupport.py

http://unladen-swallow.googlecode.com/
Python | 105 lines | 92 code | 6 blank | 7 comment | 0 complexity | e848852548ef284473dde05f63646540 MD5 | raw file
  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
  6import string
  7
  8# Declarations that change for each manager
  9MACHEADERFILE = 'OSA.h'         # The Apple header file
 10MODNAME = '_OSA'                                # The name of the module
 11
 12# The following is *usually* unchanged but may still require tuning
 13MODPREFIX = 'OSA'                       # The prefix for module-wide routines
 14OBJECTPREFIX = 'OSAObj' # The prefix for object methods
 15INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
 16OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program
 17
 18from macsupport import *
 19
 20# Create the type objects
 21
 22includestuff = includestuff + """
 23#if PY_VERSION_HEX < 0x02040000
 24PyObject *PyMac_GetOSErrException(void);
 25#endif
 26#include <Carbon/Carbon.h>
 27
 28#ifdef USE_TOOLBOX_OBJECT_GLUE
 29extern PyObject *_OSAObj_New(ComponentInstance);
 30extern int _OSAObj_Convert(PyObject *, ComponentInstance *);
 31
 32#define OSAObj_New _OSAObj_New
 33#define OSAObj_Convert _OSAObj_Convert
 34#endif
 35"""
 36
 37initstuff = initstuff + """
 38/*
 39        PyMac_INIT_TOOLBOX_OBJECT_NEW(ComponentInstance, OSAObj_New);
 40        PyMac_INIT_TOOLBOX_OBJECT_CONVERT(ComponentInstance, OSAObj_Convert);
 41*/
 42"""
 43
 44ComponentInstance = OpaqueByValueType('ComponentInstance', OBJECTPREFIX)
 45OSAError = OSErrType("OSAError", "l")
 46# OSALocalOrGlobal = Type("OSALocalOrGlobal", "l")
 47OSAID = Type("OSAID", "l")
 48OSADebugCallFrameRef = Type("OSADebugCallFrameRef", "l")
 49OSADebugSessionRef = Type("OSADebugSessionRef", "l")
 50OSADebugStepKind = Type("OSADebugStepKind", "l")
 51DescType = OSTypeType("DescType")
 52AEDesc = OpaqueType('AEDesc')
 53AEDesc_ptr = OpaqueType('AEDesc')
 54AEAddressDesc = OpaqueType('AEAddressDesc', 'AEDesc')
 55AEAddressDesc_ptr = OpaqueType('AEAddressDesc', 'AEDesc')
 56AEDescList = OpaqueType('AEDescList', 'AEDesc')
 57AEDescList_ptr = OpaqueType('AEDescList', 'AEDesc')
 58AERecord = OpaqueType('AERecord', 'AEDesc')
 59AERecord_ptr = OpaqueType('AERecord', 'AEDesc')
 60AppleEvent = OpaqueType('AppleEvent', 'AEDesc')
 61AppleEvent_ptr = OpaqueType('AppleEvent', 'AEDesc')
 62
 63# NOTE: at the moment OSA.ComponentInstance is not a subclass
 64# of Cm.ComponentInstance. If this is a problem it can be fixed.
 65class MyObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
 66    def outputCheckNewArg(self):
 67        Output("""if (itself == NULL) {
 68                                PyErr_SetString(OSA_Error,"NULL ComponentInstance");
 69                                return NULL;
 70                        }""")
 71
 72    def outputCheckConvertArg(self):
 73        Output("""
 74                if (CmpInstObj_Convert(v, p_itself))
 75                        return 1;
 76                PyErr_Clear();
 77                """)
 78
 79
 80# Create the generator groups and link them
 81module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
 82object = MyObjectDefinition('OSAComponentInstance', OBJECTPREFIX,
 83                'ComponentInstance')
 84module.addobject(object)
 85
 86# Create the generator classes used to populate the lists
 87Function = OSErrWeakLinkFunctionGenerator
 88Method = OSErrWeakLinkMethodGenerator
 89
 90# Test which types we are still missing.
 91execfile(string.lower(MODPREFIX) + 'typetest.py')
 92
 93# Create and populate the lists
 94functions = []
 95methods = []
 96execfile(INPUTFILE)
 97
 98# add the populated lists to the generator groups
 99# (in a different wordl the scan program would generate this)
100for f in functions: module.add(f)
101for f in methods: object.add(f)
102
103# generate output (open the output file as late as possible)
104SetOutputFileName(OUTPUTFILE)
105module.generate()