• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 = 'Components.h'          # The Apple header file
10MODNAME = '_Cm'                         # The name of the module
11
12# The following is *usually* unchanged but may still require tuning
13MODPREFIX = 'Cm'                        # The prefix for module-wide routines
14C_OBJECTPREFIX = 'CmpObj'       # The prefix for object methods
15CI_OBJECTPREFIX = 'CmpInstObj'
16INPUTFILE = string.lower(MODPREFIX) + 'gen.py' # The file generated by the scanner
17OUTPUTFILE = MODNAME + "module.c"       # The file generated by this program
18
19from macsupport import *
20
21# Create the type objects
22
23includestuff = includestuff + """
24#include <Carbon/Carbon.h>
25
26#ifdef USE_TOOLBOX_OBJECT_GLUE
27extern PyObject *_CmpObj_New(Component);
28extern int _CmpObj_Convert(PyObject *, Component *);
29extern PyObject *_CmpInstObj_New(ComponentInstance);
30extern 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*/
41static PyObject *
42CmpDesc_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
52static int
53CmpDesc_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
64initstuff = 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
71ComponentDescription = OpaqueType('ComponentDescription', 'CmpDesc')
72Component = OpaqueByValueType('Component', C_OBJECTPREFIX)
73ComponentInstance = OpaqueByValueType('ComponentInstance', CI_OBJECTPREFIX)
74ComponentResult = Type("ComponentResult", "l")
75
76ComponentResourceHandle = OpaqueByValueType("ComponentResourceHandle", "ResObj")
77
78class MyCIObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
79    def outputCheckNewArg(self):
80        Output("""if (itself == NULL) {
81                                PyErr_SetString(Cm_Error,"NULL ComponentInstance");
82                                return NULL;
83                        }""")
84
85class 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
100module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
101ci_object = MyCIObjectDefinition('ComponentInstance', CI_OBJECTPREFIX,
102                'ComponentInstance')
103c_object = MyCObjectDefinition('Component', C_OBJECTPREFIX, 'Component')
104module.addobject(ci_object)
105module.addobject(c_object)
106
107# Create the generator classes used to populate the lists
108Function = OSErrWeakLinkFunctionGenerator
109Method = OSErrWeakLinkMethodGenerator
110
111# Create and populate the lists
112functions = []
113c_methods = []
114ci_methods = []
115execfile(INPUTFILE)
116
117# add the populated lists to the generator groups
118# (in a different wordl the scan program would generate this)
119for f in functions: module.add(f)
120for f in c_methods: c_object.add(f)
121for f in ci_methods: ci_object.add(f)
122
123# generate output (open the output file as late as possible)
124SetOutputFileName(OUTPUTFILE)
125module.generate()
126