1 | #!/usr/bin/env python |
---|
2 | """ WrapperGenerator class to generate model code automatically. |
---|
3 | """ |
---|
4 | |
---|
5 | import os, sys,re |
---|
6 | import lineparser |
---|
7 | |
---|
8 | class WrapperGenerator: |
---|
9 | """ Python wrapper generator for C models |
---|
10 | |
---|
11 | The developer must provide a header file describing |
---|
12 | the new model. |
---|
13 | |
---|
14 | To provide the name of the Python class to be |
---|
15 | generated, the .h file must contain the following |
---|
16 | string in the comments: |
---|
17 | |
---|
18 | // [PYTHONCLASS] = my_model |
---|
19 | |
---|
20 | where my_model must be replaced by the name of the |
---|
21 | class that you want to import from sans.models. |
---|
22 | (example: [PYTHONCLASS] = MyModel |
---|
23 | will create a class MyModel in sans.models.MyModel. |
---|
24 | It will also create a class CMyModel in |
---|
25 | sans_extension.c_models.) |
---|
26 | |
---|
27 | Also in comments, each parameter of the params |
---|
28 | dictionary must be declared with a default value |
---|
29 | in the following way: |
---|
30 | |
---|
31 | // [DEFAULT]=param_name=default_value |
---|
32 | |
---|
33 | (example: |
---|
34 | // [DEFAULT]=radius=20.0 |
---|
35 | ) |
---|
36 | |
---|
37 | See cylinder.h for an example. |
---|
38 | |
---|
39 | |
---|
40 | A .c file corresponding to the .h file should also |
---|
41 | be provided (example: my_model.h, my_model.c). |
---|
42 | |
---|
43 | The .h file should define two function definitions. For example, |
---|
44 | cylinder.h defines the following: |
---|
45 | |
---|
46 | /// 1D scattering function |
---|
47 | double cylinder_analytical_1D(CylinderParameters *pars, double q); |
---|
48 | |
---|
49 | /// 2D scattering function |
---|
50 | double cylinder_analytical_2D(CylinderParameters *pars, double q, double phi); |
---|
51 | |
---|
52 | The .c file implements those functions. |
---|
53 | |
---|
54 | @author: Mathieu Doucet / UTK |
---|
55 | @contact: mathieu.doucet@nist.gov |
---|
56 | """ |
---|
57 | |
---|
58 | def __init__(self, filename, output_dir='.', c_wrapper_dir='.'): |
---|
59 | """ Initialization """ |
---|
60 | |
---|
61 | ## Name of .h file to generate wrapper from |
---|
62 | self.file = filename |
---|
63 | |
---|
64 | # Info read from file |
---|
65 | |
---|
66 | ## Name of python class to write |
---|
67 | self.pythonClass = None |
---|
68 | ## Parser in struct section |
---|
69 | self.inStruct = False |
---|
70 | self.foundCPP = False |
---|
71 | self.inParDefs = False |
---|
72 | ## Name of struct for the c object |
---|
73 | self.structName = None |
---|
74 | ## Dictionary of parameters |
---|
75 | self.params = {} |
---|
76 | ## ModelCalculation module flag |
---|
77 | self.modelCalcFlag = False |
---|
78 | ## List of default parameters (text) |
---|
79 | self.default_list = "" |
---|
80 | ## Dictionary of units |
---|
81 | self.details = "" |
---|
82 | ## List of dispersed parameters |
---|
83 | self.disp_params = [] |
---|
84 | #model description |
---|
85 | self.description='' |
---|
86 | # paramaters for fittable |
---|
87 | self.fixed= [] |
---|
88 | # paramaters for non-fittable |
---|
89 | self.non_fittable= [] |
---|
90 | ## parameters with orientation |
---|
91 | self.orientation_params =[] |
---|
92 | ## output directory for wrappers |
---|
93 | self.output_dir = output_dir |
---|
94 | self.c_wrapper_dir = c_wrapper_dir |
---|
95 | |
---|
96 | |
---|
97 | def __repr__(self): |
---|
98 | """ Simple output for printing """ |
---|
99 | |
---|
100 | rep = "\n Python class: %s\n\n" % self.pythonClass |
---|
101 | rep += " struc name: %s\n\n" % self.structName |
---|
102 | rep += " params: %s\n\n" % self.params |
---|
103 | rep += " description: %s\n\n" % self.description |
---|
104 | rep += " Fittable parameters: %s\n\n"% self.fixed |
---|
105 | rep += " Non-Fittable parameters: %s\n\n"% self.non_fittable |
---|
106 | rep += " Orientation parameters: %s\n\n"% self.orientation_params |
---|
107 | return rep |
---|
108 | |
---|
109 | def read(self): |
---|
110 | """ Reads in the .h file to catch parameters of the wrapper """ |
---|
111 | |
---|
112 | # Check if the file is there |
---|
113 | if not os.path.isfile(self.file): |
---|
114 | raise ValueError, "File %s is not a regular file" % self.file |
---|
115 | |
---|
116 | # Read file |
---|
117 | f = open(self.file,'r') |
---|
118 | buf = f.read() |
---|
119 | |
---|
120 | self.default_list = "List of default parameters:\n" |
---|
121 | #lines = string.split(buf,'\n') |
---|
122 | lines = buf.split('\n') |
---|
123 | self.details = "## Parameter details [units, min, max]\n" |
---|
124 | self.details += " self.details = {}\n" |
---|
125 | |
---|
126 | #open item in this case Fixed |
---|
127 | text='text' |
---|
128 | key2="<%s>"%text.lower() |
---|
129 | # close an item in this case fixed |
---|
130 | text='TexT' |
---|
131 | key3="</%s>"%text.lower() |
---|
132 | |
---|
133 | ## Catch fixed parameters |
---|
134 | key = "[FIXED]" |
---|
135 | try: |
---|
136 | self.fixed= lineparser.readhelper(lines,key, key2,key3, file= self.file) |
---|
137 | except: |
---|
138 | raise |
---|
139 | ## Catch non-fittable parameters parameters |
---|
140 | key = "[NON_FITTABLE_PARAMS]" |
---|
141 | try: |
---|
142 | self.non_fittable= lineparser.readhelper(lines,key, key2,key3, file= self.file) |
---|
143 | except: |
---|
144 | raise |
---|
145 | |
---|
146 | ## Catch parameters with orientation |
---|
147 | key = "[ORIENTATION_PARAMS]" |
---|
148 | try: |
---|
149 | self.orientation_params = lineparser.readhelper( lines,key, |
---|
150 | key2,key3, file= self.file) |
---|
151 | except: |
---|
152 | raise |
---|
153 | ## Catch Description |
---|
154 | key = "[DESCRIPTION]" |
---|
155 | |
---|
156 | find_description = False |
---|
157 | temp="" |
---|
158 | for line in lines: |
---|
159 | if line.count(key)>0 : |
---|
160 | |
---|
161 | try: |
---|
162 | find_description= True |
---|
163 | index = line.index(key) |
---|
164 | toks = line[index:].split("=",1 ) |
---|
165 | temp=toks[1].lstrip().rstrip() |
---|
166 | text='text' |
---|
167 | key2="<%s>"%text.lower() |
---|
168 | if re.match(key2,temp)!=None: |
---|
169 | |
---|
170 | toks2=temp.split(key2,1) |
---|
171 | self.description=toks2[1] |
---|
172 | text='text' |
---|
173 | key2="</%s>"%text.lower() |
---|
174 | if re.search(key2,toks2[1])!=None: |
---|
175 | temp=toks2[1].split(key2,1) |
---|
176 | self.description=temp[0] |
---|
177 | break |
---|
178 | |
---|
179 | else: |
---|
180 | self.description=temp |
---|
181 | break |
---|
182 | except: |
---|
183 | raise ValueError, "Could not parse file %s" % self.file |
---|
184 | elif find_description: |
---|
185 | text='text' |
---|
186 | key2="</%s>"%text.lower() |
---|
187 | if re.search(key2,line)!=None: |
---|
188 | tok=line.split(key2,1) |
---|
189 | temp=tok[0].split("//",1) |
---|
190 | self.description+=tok[1].lstrip().rstrip() |
---|
191 | break |
---|
192 | else: |
---|
193 | if re.search("//",line)!=None: |
---|
194 | temp=line.split("//",1) |
---|
195 | self.description+='\n\t\t'+temp[1].lstrip().rstrip() |
---|
196 | |
---|
197 | else: |
---|
198 | self.description+='\n\t\t'+line.lstrip().rstrip() |
---|
199 | |
---|
200 | |
---|
201 | |
---|
202 | for line in lines: |
---|
203 | |
---|
204 | # Catch class name |
---|
205 | key = "[PYTHONCLASS]" |
---|
206 | if line.count(key)>0: |
---|
207 | try: |
---|
208 | index = line.index(key) |
---|
209 | #toks = string.split( line[index:], "=" ) |
---|
210 | toks = line[index:].split("=" ) |
---|
211 | self.pythonClass = toks[1].lstrip().rstrip() |
---|
212 | except: |
---|
213 | raise ValueError, "Could not parse file %s" % self.file |
---|
214 | |
---|
215 | # Catch struct name |
---|
216 | # C++ class definition |
---|
217 | if line.count("class")>0: |
---|
218 | # We are entering a class definition |
---|
219 | self.inParDefs = True |
---|
220 | self.foundCPP = True |
---|
221 | |
---|
222 | # Old-Style C struct definition |
---|
223 | if line.count("typedef struct")>0: |
---|
224 | # We are entering a struct block |
---|
225 | self.inParDefs = True |
---|
226 | self.inStruct = True |
---|
227 | |
---|
228 | if self.inParDefs and line.count("}")>0: |
---|
229 | # We are exiting a struct block |
---|
230 | self.inParDefs = False |
---|
231 | |
---|
232 | if self.inStruct: |
---|
233 | self.inStruct = False |
---|
234 | # Catch the name of the struct |
---|
235 | index = line.index("}") |
---|
236 | toks = line[index+1:].split(";") |
---|
237 | # Catch pointer definition |
---|
238 | toks2 = toks[0].split(',') |
---|
239 | self.structName = toks2[0].lstrip().rstrip() |
---|
240 | |
---|
241 | # Catch struct content |
---|
242 | key = "[DEFAULT]" |
---|
243 | if self.inParDefs and line.count(key)>0: |
---|
244 | # Found a new parameter |
---|
245 | try: |
---|
246 | index = line.index(key) |
---|
247 | toks = line[index:].split("=") |
---|
248 | toks2 = toks[2].split() |
---|
249 | val = float(toks2[0]) |
---|
250 | self.params[toks[1]] = val |
---|
251 | #self.pythonClass = toks[1].lstrip().rstrip() |
---|
252 | units = "" |
---|
253 | if len(toks2) >= 2: |
---|
254 | units = toks2[1] |
---|
255 | self.default_list += " %-15s = %s %s\n" % \ |
---|
256 | (toks[1], val, units) |
---|
257 | |
---|
258 | # Check for min and max |
---|
259 | min = "None" |
---|
260 | max = "None" |
---|
261 | if len(toks2) == 4: |
---|
262 | min = toks2[2] |
---|
263 | max = toks2[3] |
---|
264 | |
---|
265 | self.details += " self.details['%s'] = ['%s', %s, %s]\n" % \ |
---|
266 | (toks[1].lstrip().rstrip(), units.lstrip().rstrip(), min, max) |
---|
267 | except: |
---|
268 | raise ValueError, "Could not parse input file %s \n %s" % \ |
---|
269 | (self.file, sys.exc_value) |
---|
270 | |
---|
271 | |
---|
272 | # Catch need for numerical calculations |
---|
273 | key = "CalcParameters calcPars" |
---|
274 | if line.count(key)>0: |
---|
275 | self.modelCalcFlag = True |
---|
276 | |
---|
277 | # Catch list of dispersed parameters |
---|
278 | key = "[DISP_PARAMS]" |
---|
279 | if line.count(key)>0: |
---|
280 | try: |
---|
281 | index = line.index(key) |
---|
282 | toks = line[index:].split("=") |
---|
283 | list_str = toks[1].lstrip().rstrip() |
---|
284 | self.disp_params = list_str.split(',') |
---|
285 | except: |
---|
286 | raise ValueError, "Could not parse file %s" % self.file |
---|
287 | |
---|
288 | |
---|
289 | |
---|
290 | def write_c_wrapper(self): |
---|
291 | """ Writes the C file to create the python extension class |
---|
292 | The file is written in C[PYTHONCLASS].c |
---|
293 | """ |
---|
294 | file_path = os.path.join(self.c_wrapper_dir, "C"+self.pythonClass+'.cpp') |
---|
295 | file = open(file_path, 'w') |
---|
296 | |
---|
297 | template = open(os.path.join(os.path.dirname(__file__), "classTemplate.txt"), 'r') |
---|
298 | |
---|
299 | tmp_buf = template.read() |
---|
300 | #tmp_lines = string.split(tmp_buf,'\n') |
---|
301 | tmp_lines = tmp_buf.split('\n') |
---|
302 | |
---|
303 | for tmp_line in tmp_lines: |
---|
304 | |
---|
305 | # Catch class name |
---|
306 | newline = self.replaceToken(tmp_line, |
---|
307 | "[PYTHONCLASS]", 'C'+self.pythonClass) |
---|
308 | #Catch model description |
---|
309 | #newline = self.replaceToken(tmp_line, |
---|
310 | # "[DESCRIPTION]", self.description) |
---|
311 | # Catch C model name |
---|
312 | newline = self.replaceToken(newline, |
---|
313 | "[CMODEL]", self.pythonClass) |
---|
314 | |
---|
315 | # Catch class name |
---|
316 | newline = self.replaceToken(newline, |
---|
317 | "[MODELSTRUCT]", self.structName) |
---|
318 | |
---|
319 | # Dictionary initialization |
---|
320 | param_str = "// Initialize parameter dictionary\n" |
---|
321 | for par in self.params: |
---|
322 | param_str += " PyDict_SetItemString(self->params,\"%s\",Py_BuildValue(\"d\",%10.12f));\n" % \ |
---|
323 | (par, self.params[par]) |
---|
324 | |
---|
325 | if len(self.disp_params)>0: |
---|
326 | param_str += " // Initialize dispersion / averaging parameter dict\n" |
---|
327 | param_str += " DispersionVisitor* visitor = new DispersionVisitor();\n" |
---|
328 | param_str += " PyObject * disp_dict;\n" |
---|
329 | for par in self.disp_params: |
---|
330 | par = par.strip() |
---|
331 | param_str += " disp_dict = PyDict_New();\n" |
---|
332 | param_str += " self->model->%s.dispersion->accept_as_source(visitor, self->model->%s.dispersion, disp_dict);\n" % (par, par) |
---|
333 | param_str += " PyDict_SetItemString(self->dispersion, \"%s\", disp_dict);\n" % par |
---|
334 | |
---|
335 | # Initialize dispersion object dictionnary |
---|
336 | param_str += "\n" |
---|
337 | |
---|
338 | |
---|
339 | newline = self.replaceToken(newline, |
---|
340 | "[INITDICTIONARY]", param_str) |
---|
341 | |
---|
342 | # Read dictionary |
---|
343 | param_str = " // Reader parameter dictionary\n" |
---|
344 | for par in self.params: |
---|
345 | param_str += " self->model->%s = PyFloat_AsDouble( PyDict_GetItemString(self->params, \"%s\") );\n" % \ |
---|
346 | (par, par) |
---|
347 | |
---|
348 | if len(self.disp_params)>0: |
---|
349 | param_str += " // Read in dispersion parameters\n" |
---|
350 | param_str += " PyObject* disp_dict;\n" |
---|
351 | param_str += " DispersionVisitor* visitor = new DispersionVisitor();\n" |
---|
352 | for par in self.disp_params: |
---|
353 | par = par.strip() |
---|
354 | param_str += " disp_dict = PyDict_GetItemString(self->dispersion, \"%s\");\n" % par |
---|
355 | param_str += " self->model->%s.dispersion->accept_as_destination(visitor, self->model->%s.dispersion, disp_dict);\n" % (par, par) |
---|
356 | |
---|
357 | newline = self.replaceToken(newline, "[READDICTIONARY]", param_str) |
---|
358 | |
---|
359 | # Name of .c file |
---|
360 | #toks = string.split(self.file,'.') |
---|
361 | basename = os.path.basename(self.file) |
---|
362 | toks = basename.split('.') |
---|
363 | newline = self.replaceToken(newline, "[C_FILENAME]", toks[0]) |
---|
364 | |
---|
365 | # Include file |
---|
366 | basename = os.path.basename(self.file) |
---|
367 | newline = self.replaceToken(newline, |
---|
368 | "[INCLUDE_FILE]", self.file) |
---|
369 | if self.foundCPP: |
---|
370 | newline = self.replaceToken(newline, |
---|
371 | "[C_INCLUDE_FILE]", "") |
---|
372 | newline = self.replaceToken(newline, |
---|
373 | "[CPP_INCLUDE_FILE]", "#include \"%s\"" % basename) |
---|
374 | else: |
---|
375 | newline = self.replaceToken(newline, |
---|
376 | "[C_INCLUDE_FILE]", "#include \"%s\"" % basename) |
---|
377 | newline = self.replaceToken(newline, |
---|
378 | "[CPP_INCLUDE_FILE]", "#include \"models.hh\"") |
---|
379 | |
---|
380 | # Numerical calcs dealloc |
---|
381 | dealloc_str = "\n" |
---|
382 | if self.modelCalcFlag: |
---|
383 | dealloc_str = " modelcalculations_dealloc(&(self->model_pars.calcPars));\n" |
---|
384 | newline = self.replaceToken(newline, |
---|
385 | "[NUMERICAL_DEALLOC]", dealloc_str) |
---|
386 | |
---|
387 | # Numerical calcs init |
---|
388 | init_str = "\n" |
---|
389 | if self.modelCalcFlag: |
---|
390 | init_str = " modelcalculations_init(&(self->model_pars.calcPars));\n" |
---|
391 | newline = self.replaceToken(newline, |
---|
392 | "[NUMERICAL_INIT]", init_str) |
---|
393 | |
---|
394 | # Numerical calcs reset |
---|
395 | reset_str = "\n" |
---|
396 | if self.modelCalcFlag: |
---|
397 | reset_str = "modelcalculations_reset(&(self->model_pars.calcPars));\n" |
---|
398 | newline = self.replaceToken(newline, |
---|
399 | "[NUMERICAL_RESET]", reset_str) |
---|
400 | |
---|
401 | # Setting dispsertion weights |
---|
402 | set_weights = " // Ugliness necessary to go from python to C\n" |
---|
403 | set_weights = " // TODO: refactor this\n" |
---|
404 | for par in self.disp_params: |
---|
405 | par = par.strip() |
---|
406 | set_weights += " if (!strcmp(par_name, \"%s\")) {\n" % par |
---|
407 | set_weights += " self->model->%s.dispersion = dispersion;\n" % par |
---|
408 | set_weights += " } else" |
---|
409 | newline = self.replaceToken(newline, |
---|
410 | "[SET_DISPERSION]", set_weights) |
---|
411 | |
---|
412 | # Write new line to the wrapper .c file |
---|
413 | file.write(newline+'\n') |
---|
414 | |
---|
415 | |
---|
416 | file.close() |
---|
417 | |
---|
418 | def write_python_wrapper(self): |
---|
419 | """ Writes the python file to create the python extension class |
---|
420 | The file is written in ../[PYTHONCLASS].py |
---|
421 | """ |
---|
422 | file_path = os.path.join(self.output_dir, self.pythonClass+'.py') |
---|
423 | file = open(file_path, 'w') |
---|
424 | template = open(os.path.join(os.path.dirname(__file__), "modelTemplate.txt"), 'r') |
---|
425 | |
---|
426 | tmp_buf = template.read() |
---|
427 | tmp_lines = tmp_buf.split('\n') |
---|
428 | |
---|
429 | for tmp_line in tmp_lines: |
---|
430 | |
---|
431 | # Catch class name |
---|
432 | newline = self.replaceToken(tmp_line, |
---|
433 | "[CPYTHONCLASS]", 'C'+self.pythonClass) |
---|
434 | |
---|
435 | # Catch class name |
---|
436 | newline = self.replaceToken(newline, |
---|
437 | "[PYTHONCLASS]", self.pythonClass) |
---|
438 | |
---|
439 | # Include file |
---|
440 | newline = self.replaceToken(newline, |
---|
441 | "[INCLUDE_FILE]", self.file) |
---|
442 | |
---|
443 | # Include file |
---|
444 | newline = self.replaceToken(newline, |
---|
445 | "[DEFAULT_LIST]", self.default_list) |
---|
446 | # model description |
---|
447 | newline = self.replaceToken(newline, |
---|
448 | "[DESCRIPTION]", self.description) |
---|
449 | # Parameter details |
---|
450 | newline = self.replaceToken(newline, |
---|
451 | "[PAR_DETAILS]", self.details) |
---|
452 | |
---|
453 | # fixed list details |
---|
454 | newline = self.replaceToken(newline, |
---|
455 | "[FIXED]",str(self.fixed)) |
---|
456 | # non-fittable list details |
---|
457 | newline = self.replaceToken(newline, |
---|
458 | "[NON_FITTABLE_PARAMS]",str(self.non_fittable)) |
---|
459 | ## parameters with orientation |
---|
460 | |
---|
461 | newline = self.replaceToken(newline, |
---|
462 | "[ORIENTATION_PARAMS]",str(self.orientation_params)) |
---|
463 | |
---|
464 | # Write new line to the wrapper .c file |
---|
465 | file.write(newline+'\n') |
---|
466 | |
---|
467 | file.close() |
---|
468 | |
---|
469 | |
---|
470 | def replaceToken(self, line, key, value): #pylint: disable-msg=R0201 |
---|
471 | """ Replace a token in the template file |
---|
472 | @param line: line of text to inspect |
---|
473 | @param key: token to look for |
---|
474 | @param value: string value to replace the token with |
---|
475 | @return: new string value |
---|
476 | """ |
---|
477 | lenkey = len(key) |
---|
478 | newline = line |
---|
479 | |
---|
480 | while newline.count(key)>0: |
---|
481 | index = newline.index(key) |
---|
482 | newline = newline[:index]+value+newline[index+lenkey:] |
---|
483 | |
---|
484 | return newline |
---|
485 | |
---|
486 | |
---|
487 | # main |
---|
488 | if __name__ == '__main__': |
---|
489 | if len(sys.argv)>1: |
---|
490 | print "Will look for file %s" % sys.argv[1] |
---|
491 | app = WrapperGenerator(sys.argv[1]) |
---|
492 | else: |
---|
493 | app = WrapperGenerator("test.h") |
---|
494 | app.read() |
---|
495 | app.write_c_wrapper() |
---|
496 | app.write_python_wrapper() |
---|
497 | print app |
---|
498 | |
---|
499 | # End of file |
---|