WrapperGenerator.py @ 1bbf2ac

ESS_GUIESS_GUI_DocsESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalccostrafo411magnetic_scattrelease-4.1.1release-4.1.2release-4.2.2release_4.0.1ticket-1009ticket-1094-headlessticket-1242-2d-resolutionticket-1243ticket-1249ticket885unittest-saveload

Last change on this file since 1bbf2ac was da3dae3, checked in by Gervaise Alina <gervyh@…>, 16 years ago
wrappergenerator modified
Property mode set to `100644`
File size: 24.8 KB

Line
1	#!/usr/bin/env python
2	""" WrapperGenerator class to generate model code automatically.
3	"""
4
5	import os, sys,re
6	def split_list(separator, mylist, n=0):
7	"""
8	@return a list of string without white space of separator
9	@param separator: the string to remove
10	"""
11	list=[]
12	for item in mylist:
13	if re.search( separator,item)!=None:
14	if n >0:
15	word =re.split(separator,item,int(n))
16	else:
17	word =re.split( separator,item)
18	for new_item in word:
19	if new_item.lstrip().rstrip() !='':
20	list.append(new_item.lstrip().rstrip())
21	return list
22	def split_text(separator, string1, n=0):
23	"""
24	@return a list of string without white space of separator
25	@param separator: the string to remove
26	"""
27	list=[]
28	if re.search( separator,string1)!=None:
29	if n >0:
30	word =re.split(separator,string1,int(n))
31	else:
32	word =re.split(separator,string1)
33	for item in word:
34	if item.lstrip().rstrip() !='':
35	list.append(item.lstrip().rstrip())
36	return list
37	def look_for_tag( string1,begin, end=None ):
38	"""
39	@note: this method remove the begin and end tags given by the user
40	from the string .
41	@param begin: the initial tag
42	@param end: the final tag
43	@param string: the string to check
44	@return: begin_flag==True if begin was found,
45	end_flag==if end was found else return false, false
46
47	"""
48	begin_flag= False
49	end_flag= False
50	if re.search( begin,string1)!=None:
51	begin_flag= True
52	if end !=None:
53	if re.search(end,string1)!=None:
54	end_flag= True
55	return begin_flag, end_flag
56
57	class WrapperGenerator:
58	""" Python wrapper generator for C models
59
60	The developer must provide a header file describing
61	the new model.
62
63	To provide the name of the Python class to be
64	generated, the .h file must contain the following
65	string in the comments:
66
67	// [PYTHONCLASS] = my_model
68
69	where my_model must be replaced by the name of the
70	class that you want to import from sans.models.
71	(example: [PYTHONCLASS] = MyModel
72	will create a class MyModel in sans.models.MyModel.
73	It will also create a class CMyModel in
74	sans_extension.c_models.)
75
76	Also in comments, each parameter of the params
77	dictionary must be declared with a default value
78	in the following way:
79
80	// [DEFAULT]=param_name=default_value
81
82	(example:
83	// [DEFAULT]=radius=20.0
84	)
85
86	See cylinder.h for an example.
87
88
89	A .c file corresponding to the .h file should also
90	be provided (example: my_model.h, my_model.c).
91
92	The .h file should define two function definitions. For example,
93	cylinder.h defines the following:
94
95	/// 1D scattering function
96	double cylinder_analytical_1D(CylinderParameters *pars, double q);
97
98	/// 2D scattering function
99	double cylinder_analytical_2D(CylinderParameters *pars, double q, double phi);
100
101	The .c file implements those functions.
102
103	@author: Mathieu Doucet / UTK
104	@contact: mathieu.doucet@nist.gov
105	"""
106
107	def __init__(self, filename):
108	""" Initialization """
109
110	## Name of .h file to generate wrapper from
111	self.file = filename
112
113	# Info read from file
114
115	## Name of python class to write
116	self.pythonClass = None
117	## Parser in struct section
118	self.inStruct = False
119	## Name of struct for the c object
120	self.structName = None
121	## Dictionary of parameters
122	self.params = {}
123	## ModelCalculation module flag
124	self.modelCalcFlag = False
125	## List of default parameters (text)
126	self.default_list = ""
127	## Dictionary of units
128	self.details = ""
129	## List of dispersed parameters
130	self.disp_params = []
131	#model description
132	self.description=''
133	# paramaters for fittable
134	self.fixed= []
135
136	def __repr__(self):
137	""" Simple output for printing """
138
139	rep = "Python class: %s\n" % self.pythonClass
140	rep += " struc name: %s\n" % self.structName
141	rep += " params: %s\n" % self.params
142	rep += " description: %s\n" % self.description
143	rep += " fittable paramaters list %s\n"% self.fixed
144	return rep
145
146	def read(self):
147	""" Reads in the .h file to catch parameters of the wrapper """
148
149	# Check if the file is there
150	if not os.path.isfile(self.file):
151	raise ValueError, "File %s is not a regular file" % self.file
152
153	# Read file
154	f = open(self.file,'r')
155	buf = f.read()
156
157	self.default_list = "List of default parameters:\n"
158	#lines = string.split(buf,'\n')
159	lines = buf.split('\n')
160	self.details = "## Parameter details [units, min, max]\n"
161	self.details += " self.details = {}\n"
162	# Catch Description
163	key = "[FIXED]"
164	#open item in this case Fixed
165	text='text'
166	key2="<%s>"%text.lower()
167	# close an item in this case fixed
168	text='TexT'
169	key3="</%s>"%text.lower()
170	temp=""
171	# flag to found key
172	find_fixed= False
173	find_key2=False
174	find_key3=False
175
176	for line in lines:
177	if line.count(key)>0 :#[FIXED]= .....
178	try:
179	find_fixed= True
180	index = line.index(key)
181	toks = line[index:].split("=",1 )
182	temp = toks[1].lstrip().rstrip()
183	find_key2, find_key3=look_for_tag( string1=temp,begin=key2, end=key3 )
184	if find_key2 and find_key3:
185	#print"Found both:find_key2, find_key3", find_key2, find_key3
186	temp1=[]
187	temp2=[]
188	temp3=[]
189	temp4=[]
190	temp1=split_text(separator=key2, string1=temp)
191	temp2=split_list(separator=key3, mylist=temp1)
192	temp3=split_list(separator=';', mylist=temp2)
193	temp4=split_list(separator=',', mylist=temp3)
194	self.fixed= temp3 + temp4
195	break
196
197	elif find_key2 and not find_key3:
198	#print"Find find_key2 not find_key3", find_key2, find_key3
199	temp1=[]
200	temp2=[]
201	temp3=[]
202	temp4=[]
203	temp1=split_text(separator=key2, string1=temp)
204	temp3=split_list(separator=';', mylist=temp1)
205	temp4=split_list(separator=',', mylist=temp3)
206	#print "found only key2 , temp4", temp3,temp4
207	if len(temp3+ temp4)==0:# [FIXED]= only one param
208	self.fixed+= temp1
209	self.fixed+=temp3+temp4 #
210	elif not (find_key2 and find_key3) :
211	#print"Find nothing find_key2 not find_key3", find_key2, find_key3
212	temp3=[]
213	temp4=[]
214	if look_for_tag( string1=temp,begin=";")[0]:# split ";" first
215	temp3=split_text(separator=';',string1=temp)
216	temp4=split_list(separator=',', mylist=temp3)
217	else:
218	temp3=split_text(separator=',',string1=temp)# slip "," first
219	temp4=split_list(separator=';', mylist=temp3)
220	if len(temp3+ temp4)==0:# [FIXED]= only one param
221	self.fixed= [temp]
222	self.fixed+=temp3+temp4 #
223	break
224	except:
225	raise ValueError, "Could not parse file %s" % self.file
226
227	elif find_fixed:
228	#looking only for key3
229	if not find_key2:
230	raise ValueError, "Could not parse file %s" % self.file
231	find_key3=look_for_tag( string1=line,begin=key3)[0]# split "</text>" first
232	#print "find_key3",find_key3,line,key3
233	if find_key3:
234	temp1=[]
235	temp2=[]
236	temp3=[]
237	temp4=[]
238	temp5=[]
239
240	temp1=split_text(separator=key3, string1=line)
241	temp2=split_list(separator='//',mylist=temp1)
242	temp5=split_list(separator="\*",mylist=temp1)
243
244	if len(temp5)>0:
245	temp3=split_list(separator=';',mylist=temp5)
246	temp4=split_list(separator=',', mylist=temp5)
247	elif len(temp2)>0:
248	temp3=split_list(separator=';',mylist=temp2)
249	temp4=split_list(separator=',', mylist=temp2)
250	else:
251	temp3=split_list(separator=';',mylist=temp1)
252	temp4=split_list(separator=',', mylist=temp1)
253
254	if len(temp3+ temp4)==0:# [FIXED]= only one param
255	self.fixed+= temp1
256	self.fixed+=temp3+temp4 #
257	break
258	else:
259	temp2=split_text(separator='//',string1=line)
260	temp5=split_text(separator="\*",string1=line)
261	if len(temp5)>0:
262	temp3=split_list(separator=';',mylist=temp5)
263	temp4=split_list(separator=',', mylist=temp5)
264	elif len(temp2)>0:
265	temp3=split_list(separator=';',mylist=temp2)
266	temp4=split_list(separator=',', mylist=temp2)
267	else:
268	if look_for_tag( string1=line,begin=";")[0]:# split ";" first
269	temp3=split_text(separator=';',string1=line)
270	temp4=split_list(separator=',', mylist=temp3)
271	else:
272	temp3=split_text(separator=',',string1=line)# slip "," first
273	temp4=split_list(separator=';', mylist=temp3)
274	if len(temp3+ temp4)==0:# [FIXED]= only one param
275	self.fixed= [line.lstrip().rstrip()]
276	self.fixed+=temp3+temp4 #
277
278
279
280	# Catch Description
281	key = "[DESCRIPTION]"
282	find_description= 0
283	temp=""
284	for line in lines:
285	if line.count(key)>0 :
286
287	try:
288	find_description= 1
289	index = line.index(key)
290	toks = line[index:].split("=",1 )
291	temp=toks[1].lstrip().rstrip()
292	text='text'
293	key2="<%s>"%text.lower()
294	if re.match(key2,temp)!=None:
295	#index2 = line.index(key2)
296	#temp = temp[index2:]
297	toks2=temp.split(key2,1)
298	self.description=toks2[1]
299	text='text'
300	key2="</%s>"%text.lower()
301	if re.search(key2,toks2[1])!=None:
302	temp=toks2[1].split(key2,1)
303	self.description=temp[0]
304	break
305	#print self.description
306	else:
307	self.description=temp
308	break
309	except:
310	raise
311	raise ValueError, "Could not parse file %s" % self.file
312	elif find_description==1:
313	text='text'
314	key2="</%s>"%text.lower()
315	#print "second line",line,key2,re.search(key2,line)
316	if re.search(key2,line)!=None:
317	tok=line.split(key2,1)
318	temp=tok[0].split("//",1)
319	self.description+=tok[1].lstrip().rstrip()
320	break
321	else:
322	#if re.search("*",line)!=None:
323	# temp=line.split("*",1)
324	# self.description+='\n'+temp[1].lstrip().rstrip()
325	if re.search("//",line)!=None:
326	temp=line.split("//",1)
327	self.description+='\n\t\t'+temp[1].lstrip().rstrip()
328
329	else:
330	self.description+='\n\t\t'+line.lstrip().rstrip()
331
332
333
334	for line in lines:
335
336	# Catch class name
337	key = "[PYTHONCLASS]"
338	if line.count(key)>0:
339	try:
340	index = line.index(key)
341	#toks = string.split( line[index:], "=" )
342	toks = line[index:].split("=" )
343	self.pythonClass = toks[1].lstrip().rstrip()
344	except:
345	raise ValueError, "Could not parse file %s" % self.file
346
347	# Catch struct name
348	if line.count("typedef struct")>0:
349	# We are entering a struct block
350	self.inStruct = True
351
352	if self.inStruct and line.count("}")>0:
353	# We are exiting a struct block
354	self.inStruct = False
355
356	# Catch the name of the struct
357	index = line.index("}")
358	#toks = string.split(line[index+1:],";")
359	toks = line[index+1:].split(";")
360	# Catch pointer definition
361	#toks2 = string.split(toks[0],',')
362	toks2 = toks[0].split(',')
363	self.structName = toks2[0].lstrip().rstrip()
364
365
366
367	# Catch struct content
368	key = "[DEFAULT]"
369	if self.inStruct and line.count(key)>0:
370	# Found a new parameter
371	try:
372	index = line.index(key)
373	toks = line[index:].split("=")
374	toks2 = toks[2].split()
375	val = float(toks2[0])
376	self.params[toks[1]] = val
377	#self.pythonClass = toks[1].lstrip().rstrip()
378	units = ""
379	if len(toks2) >= 2:
380	units = toks2[1]
381	self.default_list += " %-15s = %s %s\n" % \
382	(toks[1], val, units)
383
384	# Check for min and max
385	min = "None"
386	max = "None"
387	if len(toks2) == 4:
388	min = toks2[2]
389	max = toks2[3]
390
391	self.details += " self.details['%s'] = ['%s', %s, %s]\n" % \
392	(toks[1].lstrip().rstrip(), units.lstrip().rstrip(), min, max)
393	except:
394	raise ValueError, "Could not parse input file %s \n %s" % \
395	(self.file, sys.exc_value)
396
397
398	# Catch need for numerical calculations
399	key = "CalcParameters calcPars"
400	if line.count(key)>0:
401	self.modelCalcFlag = True
402
403	# Catch list of dispersed parameters
404	key = "[DISP_PARAMS]"
405	if line.count(key)>0:
406	try:
407	index = line.index(key)
408	toks = line[index:].split("=")
409	list_str = toks[1].lstrip().rstrip()
410	self.disp_params = list_str.split(',')
411	except:
412	raise ValueError, "Could not parse file %s" % self.file
413
414
415
416	def write_c_wrapper(self):
417	""" Writes the C file to create the python extension class
418	The file is written in C[PYTHONCLASS].c
419	"""
420
421	file = open("C"+self.pythonClass+'.cpp', 'w')
422	template = open("classTemplate.txt", 'r')
423
424	tmp_buf = template.read()
425	#tmp_lines = string.split(tmp_buf,'\n')
426	tmp_lines = tmp_buf.split('\n')
427
428	for tmp_line in tmp_lines:
429
430	# Catch class name
431	newline = self.replaceToken(tmp_line,
432	"[PYTHONCLASS]", 'C'+self.pythonClass)
433	#Catch model description
434	#newline = self.replaceToken(tmp_line,
435	# "[DESCRIPTION]", self.description)
436	# Catch C model name
437	newline = self.replaceToken(newline,
438	"[CMODEL]", self.pythonClass)
439
440	# Catch class name
441	newline = self.replaceToken(newline,
442	"[MODELSTRUCT]", self.structName)
443
444	# Dictionary initialization
445	param_str = "// Initialize parameter dictionary\n"
446	for par in self.params:
447	param_str += " PyDict_SetItemString(self->params,\"%s\",Py_BuildValue(\"d\",%f));\n" % \
448	(par, self.params[par])
449
450	param_str += " // Initialize dispersion / averaging parameter dict\n"
451	param_str += " DispersionVisitor* visitor = new DispersionVisitor();\n"
452	param_str += " PyObject * disp_dict;\n"
453	for par in self.disp_params:
454	par = par.strip()
455	param_str += " disp_dict = PyDict_New();\n"
456	param_str += " self->model->%s.dispersion->accept_as_source(visitor, self->model->%s.dispersion, disp_dict);\n" % (par, par)
457	param_str += " PyDict_SetItemString(self->dispersion, \"%s\", disp_dict);\n" % par
458
459	# Initialize dispersion object dictionnary
460	param_str += "\n"
461
462
463	newline = self.replaceToken(newline,
464	"[INITDICTIONARY]", param_str)
465
466	# Read dictionary
467	param_str = " // Reader parameter dictionary\n"
468	for par in self.params:
469	param_str += " self->model->%s = PyFloat_AsDouble( PyDict_GetItemString(self->params, \"%s\") );\n" % \
470	(par, par)
471
472	param_str += " // Read in dispersion parameters\n"
473	param_str += " PyObject* disp_dict;\n"
474	param_str += " DispersionVisitor* visitor = new DispersionVisitor();\n"
475	for par in self.disp_params:
476	par = par.strip()
477	param_str += " disp_dict = PyDict_GetItemString(self->dispersion, \"%s\");\n" % par
478	param_str += " self->model->%s.dispersion->accept_as_destination(visitor, self->model->%s.dispersion, disp_dict);\n" % (par, par)
479
480	newline = self.replaceToken(newline, "[READDICTIONARY]", param_str)
481
482	# Name of .c file
483	#toks = string.split(self.file,'.')
484	basename = os.path.basename(self.file)
485	toks = basename.split('.')
486	newline = self.replaceToken(newline, "[C_FILENAME]", toks[0])
487
488	# Include file
489	basename = os.path.basename(self.file)
490	newline = self.replaceToken(newline,
491	"[INCLUDE_FILE]", basename)
492
493	# Numerical calcs dealloc
494	dealloc_str = "\n"
495	if self.modelCalcFlag:
496	dealloc_str = " modelcalculations_dealloc(&(self->model_pars.calcPars));\n"
497	newline = self.replaceToken(newline,
498	"[NUMERICAL_DEALLOC]", dealloc_str)
499
500	# Numerical calcs init
501	init_str = "\n"
502	if self.modelCalcFlag:
503	init_str = " modelcalculations_init(&(self->model_pars.calcPars));\n"
504	newline = self.replaceToken(newline,
505	"[NUMERICAL_INIT]", init_str)
506
507	# Numerical calcs reset
508	reset_str = "\n"
509	if self.modelCalcFlag:
510	reset_str = "modelcalculations_reset(&(self->model_pars.calcPars));\n"
511	newline = self.replaceToken(newline,
512	"[NUMERICAL_RESET]", reset_str)
513
514	# Setting dispsertion weights
515	set_weights = " // Ugliness necessary to go from python to C\n"
516	set_weights = " // TODO: refactor this\n"
517	for par in self.disp_params:
518	par = par.strip()
519	set_weights += " if (!strcmp(par_name, \"%s\")) {\n" % par
520	set_weights += " self->model->%s.dispersion = dispersion;\n" % par
521	set_weights += " } else"
522	newline = self.replaceToken(newline,
523	"[SET_DISPERSION]", set_weights)
524
525	# Write new line to the wrapper .c file
526	file.write(newline+'\n')
527
528
529	file.close()
530
531	def write_python_wrapper(self):
532	""" Writes the python file to create the python extension class
533	The file is written in ../[PYTHONCLASS].py
534	"""
535
536	file = open("../"+self.pythonClass+'.py', 'w')
537	template = open("modelTemplate.txt", 'r')
538
539	tmp_buf = template.read()
540	tmp_lines = tmp_buf.split('\n')
541
542	for tmp_line in tmp_lines:
543
544	# Catch class name
545	newline = self.replaceToken(tmp_line,
546	"[CPYTHONCLASS]", 'C'+self.pythonClass)
547
548	# Catch class name
549	newline = self.replaceToken(newline,
550	"[PYTHONCLASS]", self.pythonClass)
551
552	# Include file
553	newline = self.replaceToken(newline,
554	"[INCLUDE_FILE]", self.file)
555
556	# Include file
557	newline = self.replaceToken(newline,
558	"[DEFAULT_LIST]", self.default_list)
559	# model description
560	newline = self.replaceToken(newline,
561	"[DESCRIPTION]", self.description)
562	# Parameter details
563	newline = self.replaceToken(newline,
564	"[PAR_DETAILS]", self.details)
565
566	# fixed list details
567	newline = self.replaceToken(newline,
568	"[FIXED]",str(self.fixed))
569
570	# Write new line to the wrapper .c file
571	file.write(newline+'\n')
572
573	file.close()
574
575
576	def replaceToken(self, line, key, value): #pylint: disable-msg=R0201
577	""" Replace a token in the template file
578	@param line: line of text to inspect
579	@param key: token to look for
580	@param value: string value to replace the token with
581	@return: new string value
582	"""
583	lenkey = len(key)
584	newline = line
585
586	while newline.count(key)>0:
587	index = newline.index(key)
588	newline = newline[:index]+value+newline[index+lenkey:]
589
590	return newline
591
592
593	# main
594	if __name__ == '__main__':
595	if len(sys.argv)>1:
596	print "Will look for file %s" % sys.argv[1]
597	#app = WrapperGenerator('../c_extensions/elliptical_cylinder.h')
598	app = WrapperGenerator(sys.argv[1])
599	else:
600	app = WrapperGenerator("test.h")
601	app.read()
602	app.write_c_wrapper()
603	app.write_python_wrapper()
604	print app
605
606	# End of file

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source: sasview/sansmodels/src/sans/models/c_models/WrapperGenerator.py @ 1bbf2ac

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