1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
|
# 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 = 'Lists.h' # The Apple header file
MODNAME = '_List' # The name of the module
OBJECTNAME = 'List' # The basic name of the objects used here
KIND = 'Handle' # Usually 'Ptr' or 'Handle'
# The following is *usually* unchanged but may still require tuning
MODPREFIX = 'List' # The prefix for module-wide routines
OBJECTTYPE = "ListHandle" # The C type used to represent them
OBJECTPREFIX = MODPREFIX + 'Obj' # The prefix for object methods
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
ListHandle = OpaqueByValueType("ListHandle", "ListObj")
ListRef = ListHandle # Obsolete, but used in Lists.h
Cell = Point
ListBounds = Rect
ListBounds_ptr = Rect_ptr
ListDefSpec = ListDefSpec_ptr = OpaqueType("ListDefSpec", "PyMac_BuildListDefSpec", "PyMac_GetListDefSpec")
VarOutBufferShortsize = VarHeapOutputBufferType('char', 'short', 's') # (buf, &len)
InBufferShortsize = VarInputBufferType('char', 'short', 's') # (buf, len)
RgnHandle = OpaqueByValueType("RgnHandle", "ResObj")
DataHandle = OpaqueByValueType("DataHandle", "ResObj")
Handle = OpaqueByValueType("Handle", "ResObj")
CGrafPtr = OpaqueByValueType("CGrafPtr", "GrafObj")
EventModifiers = Type("EventModifiers", "H")
includestuff = includestuff + """
#include <Carbon/Carbon.h>
#ifdef USE_TOOLBOX_OBJECT_GLUE
extern PyObject *_ListObj_New(ListHandle);
extern int _ListObj_Convert(PyObject *, ListHandle *);
#define ListObj_New _ListObj_New
#define ListObj_Convert _ListObj_Convert
#endif
#define as_List(x) ((ListHandle)x)
#define as_Resource(lh) ((Handle)lh)
static ListDefUPP myListDefFunctionUPP;
"""
initstuff = initstuff + """
myListDefFunctionUPP = NewListDefUPP((ListDefProcPtr)myListDefFunction);
PyMac_INIT_TOOLBOX_OBJECT_NEW(ListHandle, ListObj_New);
PyMac_INIT_TOOLBOX_OBJECT_CONVERT(ListHandle, ListObj_Convert);
"""
class ListMethodGenerator(MethodGenerator):
"""Similar to MethodGenerator, but has self as last argument"""
def parseArgumentList(self, args):
args, a0 = args[:-1], args[-1]
t0, n0, m0 = a0
if m0 != InMode:
raise ValueError("method's 'self' must be 'InMode'")
self.itself = Variable(t0, "_self->ob_itself", SelfMode)
FunctionGenerator.parseArgumentList(self, args)
self.argumentList.append(self.itself)
class MyObjectDefinition(PEP253Mixin, GlobalObjectDefinition):
# XXXX Should inherit from Resource
getsetlist = [(
'listFlags',
'return Py_BuildValue("l", (long)GetListFlags(self->ob_itself) & 0xff);',
'if (!PyArg_Parse(v, "B", &(*self->ob_itself)->listFlags)) return -1;',
None,
), (
'selFlags',
'return Py_BuildValue("l", (long)GetListSelectionFlags(self->ob_itself) & 0xff);',
'if (!PyArg_Parse(v, "B", &(*self->ob_itself)->selFlags)) return -1;',
None,
), (
'cellSize',
'return Py_BuildValue("O&", PyMac_BuildPoint, (*self->ob_itself)->cellSize);',
'if (!PyArg_Parse(v, "O&", PyMac_GetPoint, &(*self->ob_itself)->cellSize)) return -1;',
None
)]
def outputStructMembers(self):
ObjectDefinition.outputStructMembers(self)
Output("PyObject *ob_ldef_func;")
Output("int ob_must_be_disposed;")
def outputCheckNewArg(self):
Output("""if (itself == NULL) {
PyErr_SetString(List_Error,"Cannot create null List");
return NULL;
}""")
def outputInitStructMembers(self):
ObjectDefinition.outputInitStructMembers(self)
Output("it->ob_ldef_func = NULL;")
Output("it->ob_must_be_disposed = 1;")
Output("SetListRefCon(itself, (long)it);")
def outputFreeIt(self, itselfname):
Output("Py_XDECREF(self->ob_ldef_func);")
Output("self->ob_ldef_func = NULL;")
Output("SetListRefCon(self->ob_itself, (long)0);")
Output("if (self->ob_must_be_disposed && %s) LDispose(%s);", itselfname, itselfname)
# From here on it's basically all boiler plate...
finalstuff = finalstuff + """
static void myListDefFunction(SInt16 message,
Boolean selected,
Rect *cellRect,
Cell theCell,
SInt16 dataOffset,
SInt16 dataLen,
ListHandle theList)
{
PyObject *listDefFunc, *args, *rv=NULL;
ListObject *self;
self = (ListObject*)GetListRefCon(theList);
if (self == NULL || self->ob_itself != theList)
return; /* nothing we can do */
listDefFunc = self->ob_ldef_func;
if (listDefFunc == NULL)
return; /* nothing we can do */
args = Py_BuildValue("hbO&O&hhO", message,
selected,
PyMac_BuildRect, cellRect,
PyMac_BuildPoint, theCell,
dataOffset,
dataLen,
self);
if (args != NULL) {
rv = PyEval_CallObject(listDefFunc, args);
Py_DECREF(args);
}
if (rv == NULL) {
PySys_WriteStderr("error in list definition callback:\\n");
PyErr_Print();
} else {
Py_DECREF(rv);
}
}
"""
# Create the generator groups and link them
module = MacModule(MODNAME, MODPREFIX, includestuff, finalstuff, initstuff)
object = MyObjectDefinition(OBJECTNAME, OBJECTPREFIX, OBJECTTYPE)
module.addobject(object)
# Create the generator classes used to populate the lists
Function = FunctionGenerator
Method = ListMethodGenerator
# Create and populate the lists
functions = []
methods = []
exec(open(INPUTFILE).read())
# Function to convert any handle to a list and vv.
##f = Function(ListHandle, 'as_List', (Handle, 'h', InMode))
as_List_body = """
Handle h;
ListObject *l;
if (!PyArg_ParseTuple(_args, "O&", ResObj_Convert, &h))
return NULL;
l = (ListObject *)ListObj_New(as_List(h));
l->ob_must_be_disposed = 0;
_res = Py_BuildValue("O", l);
return _res;
"""
f = ManualGenerator("as_List", as_List_body)
f.docstring = lambda: "(Resource)->List.\nReturns List object (which is not auto-freed!)"
functions.append(f)
f = Method(Handle, 'as_Resource', (ListHandle, 'lh', InMode))
methods.append(f)
# Manual generator for CreateCustomList, due to callback ideosyncracies
CreateCustomList_body = """\
Rect rView;
Rect dataBounds;
Point cellSize;
PyObject *listDefFunc;
ListDefSpec theSpec;
WindowPtr theWindow;
Boolean drawIt;
Boolean hasGrow;
Boolean scrollHoriz;
Boolean scrollVert;
ListHandle outList;
if (!PyArg_ParseTuple(_args, "O&O&O&(iO)O&bbbb",
PyMac_GetRect, &rView,
PyMac_GetRect, &dataBounds,
PyMac_GetPoint, &cellSize,
&theSpec.defType, &listDefFunc,
WinObj_Convert, &theWindow,
&drawIt,
&hasGrow,
&scrollHoriz,
&scrollVert))
return NULL;
/* Carbon applications use the CreateCustomList API */
theSpec.u.userProc = myListDefFunctionUPP;
CreateCustomList(&rView,
&dataBounds,
cellSize,
&theSpec,
theWindow,
drawIt,
hasGrow,
scrollHoriz,
scrollVert,
&outList);
_res = ListObj_New(outList);
if (_res == NULL)
return NULL;
Py_INCREF(listDefFunc);
((ListObject*)_res)->ob_ldef_func = listDefFunc;
return _res;\
"""
f = ManualGenerator("CreateCustomList", CreateCustomList_body);
f.docstring = lambda: "(Rect rView, Rect dataBounds, Point cellSize, ListDefSpec theSpec, WindowPtr theWindow, Boolean drawIt, Boolean hasGrow, Boolean scrollHoriz, Boolean scrollVert) -> (ListHandle outList)"
module.add(f)
# 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 methods: object.add(f)
# generate output (open the output file as late as possible)
SetOutputFileName(OUTPUTFILE)
module.generate()
|
