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
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
|
#################################################################################
# Copyright (C) 2007 Carl Johan Lejdfors #
# #
# This program is free software; you can redistribute it and/or modify #
# it under the terms of the GNU General Public License as published by #
# the Free Software Foundation; either version 2 of the License, or #
# (at your option) any later version. #
# #
# This program is distributed in the hope that it will be useful, #
# but WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
# GNU General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program; if not, write to the Free Software #
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA #
# #
# Please send all bugreports to: Carl Johan Lejdfors <calle.lejdfors@cs.lth.se> #
#################################################################################
import re, string, sys, os.path
arrayT = re.compile('const (GL\w+) (?P<name>\w+)\[(\d+)\]')
def findTypesAndNames(args):
return map(findTypeAndName, args)
def findTypeAndName(arg):
m = arrayT.match(arg)
if m:
n = m.group('name')
t = 'const ' + m.group(1) + '*' ## '[' + m.group(3) + ']'
## print t,n
return t,n ## !!FIXME!! handle const T m[n] variables correctly...
lastStar = string.rfind(arg, '*')
if lastStar != -1:
return arg[:lastStar+1], arg[lastStar+1:]
return string.split(arg)
def isPointerType(arg):
return '*' in arg
def isConstPointer(arg):
return isPointerType(arg) and 'const' not in arg
getExceptions = ['glGetError',
'glGetString',
'glGetPointerv',
'glGetTexImage',
'glGetAttribLocation',
'glGetAttribLocationARB',
'glGetUniformLocation',
'glGetUniformLocationARB',
'glGetTexImage',
'glGetActiveAttribARB',
]
genExceptions = ['glGenLists',
'glGenerateMipmapEXT',
]
exclude = [
'glAreTexturesResident',
'glGetCompressedTexImage',
'glGetBufferSubData',
'glGetBufferSubDataARB',
'glGetActiveAttrib',
'glGetActiveUniform',
'glGetActiveUniformARB',
'glGetProgramInfoLog',
'glGetInfoLogARB',
'glGetShaderInfoLog',
'glGetShaderSource',
'glGetShaderSourceARB',
## 'glReadPixels',
'glGetCompressedTexImageARB',
'glGetHandleARB',
]
token = re.compile("^\s+(GLU?_\w+)\s+(\w+)$")
function = re.compile("^\s+((?:void|GL\w+|const GL\w+ \*)\*?) (gl\w+) \((.*)\)$")
typedef = re.compile("^\ttypedef (?P<srctype>\w+) (?P<targettype>\w+)$")
empty = re.compile("^(\t|\n)$")
webpage = re.compile("^http(?:\w|[/])+$")
def parse_extension(outdir, filename):
extFile = file(filename, 'r')
extName = extFile.readline()
webpage = None
constants = []
functions = []
typedefs = []
for line in extFile:
m = empty.match(line)
if m:
continue
if line[0:7] == 'http://':
webpage = line
continue
m = token.match(line)
if m:
constants.append((m.group(1), m.group(2)))
continue
m = function.match(line)
if m:
retType, name, args = m.groups()
args = map(string.strip, string.split(args,','))
args = filter(lambda x: x != 'void', args)
functions.append((retType, name, args))
continue
m = typedef.match(line)
if m:
typedefs.append(tuple(m.groups()))
continue
if line:
print "UNKNOWN LINE:"
print '%s' % line[:-1]
print
outputName = os.path.join(outdir, os.path.basename(filename))
declFile = file('%s-gen.hh' % outputName, 'w')
implFile = file('%s-gen.cc' % outputName, 'w')
methodFile = file('%s-methods.cc' % outputName, 'w')
constFile = file('%s-constants.cc' % outputName, 'w')
print >> implFile, "#include \"Python.h\""
print >> implFile, "#include \"GL/glew.h\""
print >> implFile, "#include \"unpack.hh\""
print >> implFile, "#include \"unpack_ptr.hh\""
print >> implFile, "#include \"pack.hh\""
print >> implFile, "#include \"%s-gen.hh\"" % extName[:-1]
glewName = 'GLEW_' + extName[3:-1]
## write declaration
print >> declFile, "#ifdef WINDOWS"
print >> declFile, "#ifdef BUILD_DLL"
print >> declFile, "#define EXPORT __declspec(dllexport)"
print >> declFile, "#else"
print >> declFile, "#define EXPORT __declspec(dllimport)"
print >> declFile, "#endif"
print >> declFile, "#else"
print >> declFile, "#define EXPORT "
print >> declFile, "#endif"
print >> declFile, "EXPORT PyObject* ___%s(PyObject*, PyObject* args);" % glewName
print >> methodFile, '{ "%s", ___%s, METH_VARARGS, "Nothing for now..." },' % (glewName, glewName)
print >> implFile, "EXPORT PyObject* ___%s(PyObject*, PyObject* args)" % glewName
print >> implFile, "{"
print >> implFile, " return pack((GLboolean)__%s);" % glewName
print >> implFile, "}"
print >> implFile
for f in functions:
retType, name, args = f
print >> declFile, "EXPORT PyObject* __%s(PyObject*, PyObject* args);" % name
print >> methodFile, '{ "%s", __%s, METH_VARARGS, "Nothing for now..." },' % (name, name)
if name in exclude: ## name[-7:] == 'Pointer':
print name, "is not implemented!"
print >> implFile, "EXPORT PyObject* __%s(PyObject*, PyObject* args)" % name
print >> implFile, "{"
print >> implFile, " PyErr_SetString(PyExc_NotImplementedError, \"Function '%s' not implemented yet\");" % name
print >> implFile, " return NULL;"
print >> implFile, "}"
print >> implFile
elif os.access(os.path.join('src', name+".cc"), os.R_OK):
print >> implFile, "#include \"src/%s.cc\"" % name
elif name[0:5] == 'glGen' and name not in genExceptions:
assert retType == 'void'
## is a generator function. Need to repack arguments to hide
## passing the ptr
size, ret = args
sizeT, sizeN = findTypeAndName(size)
retT, retN = findTypeAndName(ret)
print >> implFile, "EXPORT PyObject* __%s(PyObject*, PyObject* args)" % name
print >> implFile, "{"
print >> implFile, " %s %s;" % (sizeT, sizeN)
print >> implFile, " if ( !PyArg_ParseTuple(args, \"i\", &%s) ) {" % (sizeN)
print >> implFile, " return NULL;"
print >> implFile, " }"
print >> implFile, " %s %s = new %s(%s);" % (retT, retN, retT[0:-1], sizeN);
print >> implFile, " %s(%s, %s);" % (name, sizeN, retN)
print >> implFile, " PyObject* _result = pack(%s, %s);" % (sizeN, retN)
print >> implFile, " delete[] %s;" % (retN)
print >> implFile, " return _result;"
print >> implFile, "}"
print >> implFile
elif name[0:5] == 'glGet' and name not in getExceptions:
## is an "getter" function. Need to repack arguments to hide
## passing the ptr
print >> implFile, "EXPORT PyObject* __%s(PyObject*, PyObject* args)" % name
print >> implFile, "{"
args = findTypesAndNames(args)
inArgs = args ##[:-1]
objNames = map(lambda (t,n): '%s_obj' % n, inArgs)
for objName in objNames:
print >> implFile, " PyObject* %s;" % objName
if inArgs:
print >> implFile, " if ( !PyArg_ParseTuple(args, \"%s\", %s) ) {" % ('O'*len(inArgs),
string.join(map(lambda n: '&' + n, objNames), ", "))
print >> implFile, " return NULL;"
print >> implFile, " }"
for (t,n), obj in zip(args, objNames):
print >> implFile, " %s %s = unpack<%s>(%s);" % (t, n, t, obj)
#size = 1 ## !!FIXME!! must estimate number of elements needed...
#retT,retN = args[-1]
#print >> implFile, " %s *%s = new %s[%s];" % (retT[:-1], retN, retT[:-1], size)
print >> implFile, " %s(%s);" % (name, string.join(map(lambda (t,n): n, args), ", "))
#for t,n in args[:-1]:
# if isPointer(t):
# print >> implFile, " delete[] %s;" % (n)
#print >> implFile, " PyObject* res = pack(%s, %s);" % (size, retN)
#print >> implFile, " delete[] %s;" % (retN)
print >> implFile, " Py_INCREF(Py_None);"
print >> implFile, " return Py_None;"
print >> implFile, "}"
elif name[-7:] == 'Pointer':
print >> implFile, "static pointer_wrapper<GLvoid*> __%s_ptr = 0;" % name
print >> implFile, "EXPORT PyObject* __%s( PyObject*, PyObject* args )" % name
print >> implFile, "{"
args = findTypesAndNames(args)
for t,n in args[:-1]:
print >> implFile, " %s %s;" % (t,n)
#lastT,lastN = args[-1]
#if lastN == 'ptr':
print >> implFile, " PyObject* obj;"
print >> implFile, " if ( !PyArg_ParseTuple(args, \"%sO\", %s, &obj) ) {" \
% ('i'*(len(args)-1),
string.join(map(lambda (t,n): '&%s' % n, args[:-1]), ", "))
print >> implFile, " return NULL;"
print >> implFile, " }"
#print >> implFile, " if ( __%s_ptr )" % name
#print >> implFile, " free( __%s_ptr );" % name
print >> implFile, " try {"
if name == 'glEdgeFlagPointer':
print >> implFile, " __%s_ptr = unpack_pointer(GL_BOOL, stride, obj);" % name
else:
print >> implFile, " __%s_ptr = unpack_pointer(type, stride, obj);" % name
print >> implFile, " %s(%s, __%s_ptr);" \
% (name, string.join(map(lambda (t,n): n, args[:-1]), ", "), name)
print >> implFile, " } catch ( const pyglew_exception &e ) {"
print >> implFile, " PyErr_SetString(PyExc_TypeError, e.what());"
print >> implFile, " return NULL;"
print >> implFile, " }"
print >> implFile, " Py_INCREF(Py_None);"
print >> implFile, " return Py_None;"
print >> implFile, "}"
else:
print >> implFile, "EXPORT PyObject* __%s(PyObject*, PyObject* args)" % name
print >> implFile, "{"
## !!FIXME!! can implement direct translation here for some types
## however that will make interfacing with e.g. Numeric problematic
args = findTypesAndNames(args)
objNames = map(lambda (t,n): '%s_obj' % n, args)
for objName in objNames:
print >> implFile, " PyObject* %s;" % objName
if args:
print >> implFile, " if ( !PyArg_ParseTuple(args, \"%s\", %s) ) {" % ('O'*len(args),
string.join(map(lambda n: '&' + n, objNames), ", "))
print >> implFile, " return NULL;"
print >> implFile, " }"
print >> implFile, " try {"
for (t,n), ra in zip(args, objNames):
if isPointerType(t):
print >> implFile, " pointer_wrapper<%s> %s = unpack_ptr<%s>(%s);" % (t, n, t, ra)
else:
print >> implFile, " %s %s = unpack<%s>(%s);" % (t, n, t, ra)
if retType == 'void':
print >> implFile, " %s(%s);" % (name, string.join(map(lambda (t,n): n, args), ", "))
#for t,n in args:
# if shouldDelete(t):
# print >> implFile, " delete[] %s;" % (n)
print >> implFile, " Py_INCREF(Py_None);"
print >> implFile, " return Py_None;"
else:
print >> implFile, " %s _result = %s(%s);" % (retType, name, string.join(map(lambda (t,n): n, args), ", "))
#for t,n in args:
# if shouldDelete(t):
# print >> implFile, " delete[] %s;" % (n)
print >> implFile, " return pack(_result);"
print >> implFile, " } catch (const pyglew_exception& e) {"
print >> implFile, " PyErr_SetString(PyExc_TypeError, e.what());"
print >> implFile, " }"
print >> implFile, " return NULL;"
print >> implFile, "}"
print >> implFile
for n, v in constants:
print >> constFile, "{ %s, \"%s\", %s }," % (0, n, v)
if __name__ == '__main__':
parse_extension(sys.argv[1], sys.argv[2])
|
