WrapperGenerator.py @ 7ffa8196

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 7ffa8196 was d62f422, checked in by Mathieu Doucet <doucetm@…>, 13 years ago
updated WrapperGenerator? to deal with both pre- and post-refactor models.
Property mode set to `100644`
File size: 19.6 KB

Rev	Line
[af03ddd]	1	#!/usr/bin/env python
	2	""" WrapperGenerator class to generate model code automatically.
	3	"""
	4
[95986b5]	5	import os, sys,re
[25a608f5]	6	import lineparser
[af03ddd]	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):
	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
[a1d1b90]	70	self.foundCPP = False
[d62f422]	71	self.inParDefs = False
[af03ddd]	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 = []
[4e2f6ef8]	84	#model description
	85	self.description=''
[836fe6e]	86	# paramaters for fittable
	87	self.fixed= []
[35aface]	88	# paramaters for non-fittable
	89	self.non_fittable= []
[25a608f5]	90	## parameters with orientation
	91	self.orientation_params =[]
	92
[af03ddd]	93
	94	def __repr__(self):
	95	""" Simple output for printing """
	96
[25a608f5]	97	rep = "\n Python class: %s\n\n" % self.pythonClass
	98	rep += " struc name: %s\n\n" % self.structName
	99	rep += " params: %s\n\n" % self.params
	100	rep += " description: %s\n\n" % self.description
	101	rep += " Fittable parameters: %s\n\n"% self.fixed
[35aface]	102	rep += " Non-Fittable parameters: %s\n\n"% self.non_fittable
[25a608f5]	103	rep += " Orientation parameters: %s\n\n"% self.orientation_params
[af03ddd]	104	return rep
	105
	106	def read(self):
	107	""" Reads in the .h file to catch parameters of the wrapper """
	108
	109	# Check if the file is there
	110	if not os.path.isfile(self.file):
	111	raise ValueError, "File %s is not a regular file" % self.file
	112
	113	# Read file
	114	f = open(self.file,'r')
	115	buf = f.read()
	116
	117	self.default_list = "List of default parameters:\n"
	118	#lines = string.split(buf,'\n')
	119	lines = buf.split('\n')
	120	self.details = "## Parameter details [units, min, max]\n"
	121	self.details += " self.details = {}\n"
[25a608f5]	122
[836fe6e]	123	#open item in this case Fixed
	124	text='text'
	125	key2="<%s>"%text.lower()
	126	# close an item in this case fixed
[da3dae3]	127	text='TexT'
[836fe6e]	128	key3="</%s>"%text.lower()
	129
[25a608f5]	130	## Catch fixed parameters
	131	key = "[FIXED]"
	132	try:
	133	self.fixed= lineparser.readhelper(lines,key, key2,key3, file= self.file)
	134	except:
	135	raise
[35aface]	136	## Catch non-fittable parameters parameters
	137	key = "[NON_FITTABLE_PARAMS]"
	138	try:
	139	self.non_fittable= lineparser.readhelper(lines,key, key2,key3, file= self.file)
	140	except:
	141	raise
	142
[25a608f5]	143	## Catch parameters with orientation
	144	key = "[ORIENTATION_PARAMS]"
	145	try:
	146	self.orientation_params = lineparser.readhelper( lines,key,
	147	key2,key3, file= self.file)
	148	except:
	149	raise
	150	## Catch Description
[96672c0]	151	key = "[DESCRIPTION]"
[25a608f5]	152
	153	find_description = False
[96672c0]	154	temp=""
	155	for line in lines:
	156	if line.count(key)>0 :
[9316609]	157
[96672c0]	158	try:
[25a608f5]	159	find_description= True
[96672c0]	160	index = line.index(key)
	161	toks = line[index:].split("=",1 )
	162	temp=toks[1].lstrip().rstrip()
	163	text='text'
[9316609]	164	key2="<%s>"%text.lower()
[96672c0]	165	if re.match(key2,temp)!=None:
[25a608f5]	166
[9316609]	167	toks2=temp.split(key2,1)
	168	self.description=toks2[1]
	169	text='text'
	170	key2="</%s>"%text.lower()
	171	if re.search(key2,toks2[1])!=None:
	172	temp=toks2[1].split(key2,1)
	173	self.description=temp[0]
	174	break
[25a608f5]	175
[96672c0]	176	else:
	177	self.description=temp
[9316609]	178	break
[96672c0]	179	except:
	180	raise ValueError, "Could not parse file %s" % self.file
[25a608f5]	181	elif find_description:
[9316609]	182	text='text'
	183	key2="</%s>"%text.lower()
	184	if re.search(key2,line)!=None:
	185	tok=line.split(key2,1)
	186	temp=tok[0].split("//",1)
	187	self.description+=tok[1].lstrip().rstrip()
	188	break
	189	else:
	190	if re.search("//",line)!=None:
	191	temp=line.split("//",1)
	192	self.description+='\n\t\t'+temp[1].lstrip().rstrip()
	193
	194	else:
	195	self.description+='\n\t\t'+line.lstrip().rstrip()
	196
	197
[96672c0]	198
[af03ddd]	199	for line in lines:
	200
	201	# Catch class name
	202	key = "[PYTHONCLASS]"
	203	if line.count(key)>0:
	204	try:
	205	index = line.index(key)
	206	#toks = string.split( line[index:], "=" )
	207	toks = line[index:].split("=" )
	208	self.pythonClass = toks[1].lstrip().rstrip()
	209	except:
	210	raise ValueError, "Could not parse file %s" % self.file
	211
	212	# Catch struct name
[a1d1b90]	213	# C++ class definition
	214	if line.count("class")>0:
	215	# We are entering a class definition
[d62f422]	216	self.inParDefs = True
[a1d1b90]	217	self.foundCPP = True
	218
	219	# Old-Style C struct definition
[af03ddd]	220	if line.count("typedef struct")>0:
	221	# We are entering a struct block
[d62f422]	222	self.inParDefs = True
[af03ddd]	223	self.inStruct = True
	224
[d62f422]	225	if self.inParDefs and line.count("}")>0:
[af03ddd]	226	# We are exiting a struct block
[d62f422]	227	self.inParDefs = False
[af03ddd]	228
[d62f422]	229	if self.inStruct:
	230	self.inStruct = False
	231	# Catch the name of the struct
	232	index = line.index("}")
	233	toks = line[index+1:].split(";")
	234	# Catch pointer definition
	235	toks2 = toks[0].split(',')
	236	self.structName = toks2[0].lstrip().rstrip()
[96672c0]	237
[af03ddd]	238	# Catch struct content
	239	key = "[DEFAULT]"
[d62f422]	240	if self.inParDefs and line.count(key)>0:
[af03ddd]	241	# Found a new parameter
	242	try:
	243	index = line.index(key)
	244	toks = line[index:].split("=")
	245	toks2 = toks[2].split()
	246	val = float(toks2[0])
	247	self.params[toks[1]] = val
	248	#self.pythonClass = toks[1].lstrip().rstrip()
	249	units = ""
	250	if len(toks2) >= 2:
	251	units = toks2[1]
	252	self.default_list += " %-15s = %s %s\n" % \
	253	(toks[1], val, units)
	254
	255	# Check for min and max
	256	min = "None"
	257	max = "None"
	258	if len(toks2) == 4:
	259	min = toks2[2]
	260	max = toks2[3]
	261
	262	self.details += " self.details['%s'] = ['%s', %s, %s]\n" % \
	263	(toks[1].lstrip().rstrip(), units.lstrip().rstrip(), min, max)
	264	except:
	265	raise ValueError, "Could not parse input file %s \n %s" % \
	266	(self.file, sys.exc_value)
	267
	268
	269	# Catch need for numerical calculations
	270	key = "CalcParameters calcPars"
	271	if line.count(key)>0:
	272	self.modelCalcFlag = True
	273
	274	# Catch list of dispersed parameters
	275	key = "[DISP_PARAMS]"
	276	if line.count(key)>0:
	277	try:
	278	index = line.index(key)
	279	toks = line[index:].split("=")
	280	list_str = toks[1].lstrip().rstrip()
	281	self.disp_params = list_str.split(',')
	282	except:
	283	raise ValueError, "Could not parse file %s" % self.file
	284
[95986b5]	285
[af03ddd]	286
	287	def write_c_wrapper(self):
	288	""" Writes the C file to create the python extension class
	289	The file is written in C[PYTHONCLASS].c
	290	"""
	291
	292	file = open("C"+self.pythonClass+'.cpp', 'w')
	293	template = open("classTemplate.txt", 'r')
	294
	295	tmp_buf = template.read()
	296	#tmp_lines = string.split(tmp_buf,'\n')
	297	tmp_lines = tmp_buf.split('\n')
	298
	299	for tmp_line in tmp_lines:
	300
	301	# Catch class name
	302	newline = self.replaceToken(tmp_line,
	303	"[PYTHONCLASS]", 'C'+self.pythonClass)
[9316609]	304	#Catch model description
[95986b5]	305	#newline = self.replaceToken(tmp_line,
	306	# "[DESCRIPTION]", self.description)
[af03ddd]	307	# Catch C model name
	308	newline = self.replaceToken(newline,
	309	"[CMODEL]", self.pythonClass)
	310
	311	# Catch class name
	312	newline = self.replaceToken(newline,
	313	"[MODELSTRUCT]", self.structName)
	314
	315	# Dictionary initialization
	316	param_str = "// Initialize parameter dictionary\n"
	317	for par in self.params:
[35aface]	318	param_str += " PyDict_SetItemString(self->params,\"%s\",Py_BuildValue(\"d\",%10.12f));\n" % \
[0f5bc9f]	319	(par, self.params[par])
[af03ddd]	320
	321	param_str += " // Initialize dispersion / averaging parameter dict\n"
	322	param_str += " DispersionVisitor* visitor = new DispersionVisitor();\n"
	323	param_str += " PyObject * disp_dict;\n"
	324	for par in self.disp_params:
	325	par = par.strip()
	326	param_str += " disp_dict = PyDict_New();\n"
	327	param_str += " self->model->%s.dispersion->accept_as_source(visitor, self->model->%s.dispersion, disp_dict);\n" % (par, par)
	328	param_str += " PyDict_SetItemString(self->dispersion, \"%s\", disp_dict);\n" % par
	329
	330	# Initialize dispersion object dictionnary
	331	param_str += "\n"
	332
	333
	334	newline = self.replaceToken(newline,
	335	"[INITDICTIONARY]", param_str)
	336
	337	# Read dictionary
	338	param_str = " // Reader parameter dictionary\n"
	339	for par in self.params:
	340	param_str += " self->model->%s = PyFloat_AsDouble( PyDict_GetItemString(self->params, \"%s\") );\n" % \
	341	(par, par)
	342
	343	param_str += " // Read in dispersion parameters\n"
	344	param_str += " PyObject* disp_dict;\n"
	345	param_str += " DispersionVisitor* visitor = new DispersionVisitor();\n"
	346	for par in self.disp_params:
	347	par = par.strip()
	348	param_str += " disp_dict = PyDict_GetItemString(self->dispersion, \"%s\");\n" % par
	349	param_str += " self->model->%s.dispersion->accept_as_destination(visitor, self->model->%s.dispersion, disp_dict);\n" % (par, par)
	350
	351	newline = self.replaceToken(newline, "[READDICTIONARY]", param_str)
	352
	353	# Name of .c file
	354	#toks = string.split(self.file,'.')
	355	basename = os.path.basename(self.file)
	356	toks = basename.split('.')
	357	newline = self.replaceToken(newline, "[C_FILENAME]", toks[0])
	358
	359	# Include file
	360	basename = os.path.basename(self.file)
	361	newline = self.replaceToken(newline,
[a1d1b90]	362	"[INCLUDE_FILE]", self.file)
	363	if self.foundCPP:
	364	newline = self.replaceToken(newline,
	365	"[C_INCLUDE_FILE]", "")
	366	newline = self.replaceToken(newline,
	367	"[CPP_INCLUDE_FILE]", "#include \"%s\"" % basename)
	368	else:
	369	newline = self.replaceToken(newline,
	370	"[C_INCLUDE_FILE]", "#include \"%s\"" % basename)
	371	newline = self.replaceToken(newline,
	372	"[CPP_INCLUDE_FILE]", "#include \"models.hh\"")
[af03ddd]	373
	374	# Numerical calcs dealloc
	375	dealloc_str = "\n"
	376	if self.modelCalcFlag:
	377	dealloc_str = " modelcalculations_dealloc(&(self->model_pars.calcPars));\n"
	378	newline = self.replaceToken(newline,
	379	"[NUMERICAL_DEALLOC]", dealloc_str)
	380
	381	# Numerical calcs init
	382	init_str = "\n"
	383	if self.modelCalcFlag:
	384	init_str = " modelcalculations_init(&(self->model_pars.calcPars));\n"
	385	newline = self.replaceToken(newline,
	386	"[NUMERICAL_INIT]", init_str)
	387
	388	# Numerical calcs reset
	389	reset_str = "\n"
	390	if self.modelCalcFlag:
	391	reset_str = "modelcalculations_reset(&(self->model_pars.calcPars));\n"
	392	newline = self.replaceToken(newline,
	393	"[NUMERICAL_RESET]", reset_str)
	394
	395	# Setting dispsertion weights
	396	set_weights = " // Ugliness necessary to go from python to C\n"
	397	set_weights = " // TODO: refactor this\n"
	398	for par in self.disp_params:
	399	par = par.strip()
	400	set_weights += " if (!strcmp(par_name, \"%s\")) {\n" % par
	401	set_weights += " self->model->%s.dispersion = dispersion;\n" % par
	402	set_weights += " } else"
	403	newline = self.replaceToken(newline,
	404	"[SET_DISPERSION]", set_weights)
	405
	406	# Write new line to the wrapper .c file
	407	file.write(newline+'\n')
	408
	409
	410	file.close()
	411
	412	def write_python_wrapper(self):
	413	""" Writes the python file to create the python extension class
	414	The file is written in ../[PYTHONCLASS].py
	415	"""
	416
[67424cd]	417	file = open("../sans/models/"+self.pythonClass+'.py', 'w')
[af03ddd]	418	template = open("modelTemplate.txt", 'r')
	419
	420	tmp_buf = template.read()
	421	tmp_lines = tmp_buf.split('\n')
	422
	423	for tmp_line in tmp_lines:
	424
	425	# Catch class name
	426	newline = self.replaceToken(tmp_line,
	427	"[CPYTHONCLASS]", 'C'+self.pythonClass)
	428
	429	# Catch class name
	430	newline = self.replaceToken(newline,
	431	"[PYTHONCLASS]", self.pythonClass)
	432
	433	# Include file
	434	newline = self.replaceToken(newline,
	435	"[INCLUDE_FILE]", self.file)
	436
	437	# Include file
	438	newline = self.replaceToken(newline,
	439	"[DEFAULT_LIST]", self.default_list)
[95986b5]	440	# model description
[af03ddd]	441	newline = self.replaceToken(newline,
[95986b5]	442	"[DESCRIPTION]", self.description)
[4e2f6ef8]	443	# Parameter details
	444	newline = self.replaceToken(newline,
[95986b5]	445	"[PAR_DETAILS]", self.details)
	446
[836fe6e]	447	# fixed list details
	448	newline = self.replaceToken(newline,
	449	"[FIXED]",str(self.fixed))
[35aface]	450	# non-fittable list details
	451	newline = self.replaceToken(newline,
	452	"[NON_FITTABLE_PARAMS]",str(self.non_fittable))
[25a608f5]	453	## parameters with orientation
	454
	455	newline = self.replaceToken(newline,
	456	"[ORIENTATION_PARAMS]",str(self.orientation_params))
[836fe6e]	457
[af03ddd]	458	# Write new line to the wrapper .c file
	459	file.write(newline+'\n')
	460
	461	file.close()
	462
	463
	464	def replaceToken(self, line, key, value): #pylint: disable-msg=R0201
	465	""" Replace a token in the template file
	466	@param line: line of text to inspect
	467	@param key: token to look for
	468	@param value: string value to replace the token with
	469	@return: new string value
	470	"""
	471	lenkey = len(key)
	472	newline = line
[836fe6e]	473
[af03ddd]	474	while newline.count(key)>0:
	475	index = newline.index(key)
	476	newline = newline[:index]+value+newline[index+lenkey:]
[836fe6e]	477
[af03ddd]	478	return newline
	479
	480
	481	# main
	482	if __name__ == '__main__':
	483	if len(sys.argv)>1:
	484	print "Will look for file %s" % sys.argv[1]
[95986b5]	485	#app = WrapperGenerator('../c_extensions/elliptical_cylinder.h')
[af03ddd]	486	app = WrapperGenerator(sys.argv[1])
	487	else:
	488	app = WrapperGenerator("test.h")
	489	app.read()
	490	app.write_c_wrapper()
	491	app.write_python_wrapper()
	492	print app
	493
	494	# End of file

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source: sasview/sansmodels/src/python_wrapper/WrapperGenerator.py @ 7ffa8196

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