4 # This file is part of BeRTOS.
6 # Bertos is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program; if not, write to the Free Software
18 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 # As a special exception, you may use this file as part of a free software
21 # library without restriction. Specifically, if other files instantiate
22 # templates or use macros or inline functions from this file, or you compile
23 # this file and link it with other files to produce an executable, this
24 # file does not by itself cause the resulting executable to be covered by
25 # the GNU General Public License. This exception does not however
26 # invalidate any other reasons why the executable file might be covered by
27 # the GNU General Public License.
29 # Copyright 2008 Develer S.r.l. (http://www.develer.com/)
33 # Author: Lorenzo Berni <duplo@develer.com>
41 # Use custom copytree function
48 import DefineException
50 from _wizard_version import WIZARD_VERSION
52 from LoadException import VersionException, ToolchainException
54 def isBertosDir(directory):
55 return os.path.exists(directory + "/VERSION")
57 def bertosVersion(directory):
58 return open(directory + "/VERSION").readline().strip()
60 def enabledModules(project_info):
62 for name, module in project_info.info("MODULES").items():
64 enabled_modules.append(name)
65 return enabled_modules
67 def presetList(directory):
69 Return the list of the preset found in the selected BeRTOS Version.
71 abspath = os.path.join(directory, const.PREDEFINED_BOARDS_DIR)
73 (os.path.join(abspath, preset_dir), presetInfo(os.path.join(abspath, preset_dir)))
74 for preset_dir in os.listdir(os.path.join(directory, const.PREDEFINED_BOARDS_DIR))
78 def presetInfo(preset_dir):
80 Return the preset-relevant info contined into the project_file.
82 preset_info = pickle.loads(open(os.path.join(preset_dir, "project.bertos"), "r").read())
84 description = open(os.path.join(preset_dir, "description"), "r").read()
86 # No description file found.
89 "CPU_NAME": preset_info.get("CPU_NAME"),
90 "SELECTED_FREQ": preset_info.get("SELECTED_FREQ"),
91 "WIZARD_VERSION": preset_info.get("WIZARD_VERSION", None),
92 "PRESET_NAME": preset_info.get("PROJECT_NAME"),
93 "PRESET_DESCRIPTION": description.decode("utf-8"),
97 def mergeSources(srcdir, new_sources, old_sources):
98 # The current mergeSources function provide only a raw copy of the sources in the
101 # TODO: implement the three way merge algorithm
103 shutil.rmtree(srcdir, True)
104 copytree.copytree(os.path.join(new_sources, "bertos"), srcdir, ignore_list=const.IGNORE_LIST)
106 def projectFileGenerator(project_info):
107 directory = project_info.info("PROJECT_PATH")
110 for module, information in project_info.info("MODULES").items():
111 if information["enabled"]:
112 enabled_modules.append(module)
113 project_data["ENABLED_MODULES"] = enabled_modules
114 if project_info.info("PRESET"):
115 # For presets save again the BERTOS_PATH into project file
116 project_data["PRESET"] = True
117 project_data["BERTOS_PATH"] = relpath.relpath(project_info.info("BERTOS_PATH"), directory)
118 elif project_info.edit:
119 # If in editing mode the BERTOS_PATH is maintained
120 project_data["BERTOS_PATH"] = relpath.relpath(project_info.info("BERTOS_PATH"), directory)
122 # Use the local BeRTOS version instead of the original one
123 # project_data["BERTOS_PATH"] = project_info.info("BERTOS_PATH")
124 project_data["BERTOS_PATH"] = "."
125 project_data["PROJECT_NAME"] = project_info.info("PROJECT_NAME", os.path.basename(directory))
126 project_src_relpath = relpath.relpath(project_info.info("PROJECT_SRC_PATH"), directory)
127 project_data["PROJECT_SRC_PATH"] = project_src_relpath
128 project_data["TOOLCHAIN"] = project_info.info("TOOLCHAIN")
129 project_data["CPU_NAME"] = project_info.info("CPU_NAME")
130 project_data["SELECTED_FREQ"] = project_info.info("SELECTED_FREQ")
131 project_data["OUTPUT"] = project_info.info("OUTPUT")
132 project_data["WIZARD_VERSION"] = WIZARD_VERSION
133 project_data["PRESET"] = project_info.info("PRESET")
134 project_data["PROJECT_HW_PATH"] = relpath.relpath(project_info.info("PROJECT_HW_PATH"), directory)
135 return pickle.dumps(project_data)
137 def loadPlugin(plugin):
139 Returns the given plugin module.
141 return getattr(__import__("plugins", {}, {}, [plugin]), plugin)
143 def versionFileGenerator(project_info, version_file):
144 version = bertosVersion(project_info.info("BERTOS_PATH"))
145 return version_file.replace('$version', version)
147 def userMkGeneratorFromPreset(project_info):
148 project_name = project_info.info("PROJECT_NAME")
149 preset_path = project_info.info("PRESET_PATH")
150 preset_name = project_info.info("PRESET_NAME")
151 preset_src_dir = project_info.info("PRESET_SRC_PATH")
152 makefile = open(os.path.join(preset_path, preset_src_dir, "%s_user.mk" %preset_name), 'r').read()
153 destination = os.path.join(project_info.prjdir, "%s_user.mk" %project_info.info("PROJECT_NAME"))
155 # TODO: write it using regular expressions to secure this function
156 makefile = makefile.replace(preset_name + "_", project_name + "_")
157 open(destination, "w").write(makefile)
159 def userMkGenerator(project_info):
160 makefile = open(os.path.join(const.DATA_DIR, "mktemplates/template_user.mk"), "r").read()
161 destination = os.path.join(project_info.prjdir, os.path.basename(project_info.prjdir) + "_user.mk")
162 # Deadly performances loss was here :(
164 mk_data["$pname"] = os.path.basename(project_info.info("PROJECT_PATH"))
165 mk_data["$ppath"] = relpath.relpath(project_info.info("PROJECT_SRC_PATH"), project_info.info("PROJECT_PATH"))
166 mk_data["$main"] = os.path.join("$(%s_SRC_PATH)" %project_info.info("PROJECT_NAME"), "main.c")
168 makefile = makefile.replace(key, mk_data[key])
169 open(destination, "w").write(makefile)
171 def mkGenerator(project_info):
173 Generates the mk file for the current project.
175 makefile = open(os.path.join(const.DATA_DIR, "mktemplates/template.mk"), "r").read()
176 destination = os.path.join(project_info.prjdir, os.path.basename(project_info.prjdir) + ".mk")
178 mk_data["$pname"] = project_info.info("PROJECT_NAME")
179 mk_data["$ppath"] = relpath.relpath(project_info.info("PROJECT_SRC_PATH"), project_info.info("PROJECT_PATH"))
180 mk_data["$cpuclockfreq"] = project_info.info("SELECTED_FREQ")
181 cpu_mk_parameters = []
182 for key, value in project_info.info("CPU_INFOS").items():
183 if key.startswith(const.MK_PARAM_ID):
184 cpu_mk_parameters.append("%s = %s" %(key.replace("MK", mk_data["$pname"]), value))
185 mk_data["$cpuparameters"] = "\n".join(cpu_mk_parameters)
186 mk_data["$csrc"], mk_data["$pcsrc"], mk_data["$cppasrc"], mk_data["$cxxsrc"], mk_data["$asrc"], mk_data["$constants"] = csrcGenerator(project_info)
187 mk_data["$prefix"] = replaceSeparators(project_info.info("TOOLCHAIN")["path"].split("gcc")[0])
188 mk_data["$suffix"] = replaceSeparators(project_info.info("TOOLCHAIN")["path"].split("gcc")[1])
189 mk_data["$hwpath"] = relpath.relpath(project_info.info("PROJECT_HW_PATH"), project_info.info("PROJECT_PATH"))
191 makefile = makefile.replace(key, mk_data[key])
192 open(destination, "w").write(makefile)
194 def makefileGenerator(project_info):
196 Generate the Makefile for the current project.
198 makefile = open(os.path.join(const.DATA_DIR, "mktemplates/Makefile"), "r").read()
199 destination = os.path.join(project_info.maindir, "Makefile")
200 # TODO write a general function that works for both the mk file and the Makefile
202 mk_data["$pname"] = project_info.info("PROJECT_NAME")
203 mk_data["$ppath"] = relpath.relpath(project_info.info("PROJECT_SRC_PATH"), project_info.info("PROJECT_PATH"))
205 makefile = makefile.replace(key, mk_data[key])
206 open(destination, "w").write(makefile)
208 def csrcGenerator(project_info):
209 modules = project_info.info("MODULES")
210 files = project_info.info("FILES")
211 if "harvard" in project_info.info("CPU_INFOS")["CPU_TAGS"]:
215 # file to be included in CSRC variable
217 # file to be included in PCSRC variable
219 # files to be included in CPPASRC variable
221 # files to be included in CXXSRC variable
223 # files to be included in ASRC variable
225 # constants to be included at the beginning of the makefile
227 for module, information in modules.items():
228 module_files = set([])
229 dependency_files = set([])
232 hwdir = os.path.basename(project_info.info("PROJECT_PATH")) + "/hw"
233 if information["enabled"]:
234 if "constants" in information:
235 constants.update(information["constants"])
236 cfiles, sfiles = findModuleFiles(module, project_info)
237 module_files |= set(cfiles)
238 asm_files |= set(sfiles)
239 for file in information["hw"]:
240 if file.endswith(".c"):
241 module_files |= set([hwdir + "/" + os.path.basename(file)])
242 for file_dependency in information["depends"] + tuple(files.keys()):
243 dependencyCFiles, dependencySFiles = findModuleFiles(file_dependency, project_info)
244 dependency_files |= set(dependencyCFiles)
245 asm_files |= set(dependencySFiles)
246 for file in module_files:
247 if not harvard or information.get("harvard", "both") == "both":
249 if harvard and "harvard" in information:
251 for file in dependency_files:
253 for file in project_info.info("CPU_INFOS")["C_SRC"]:
255 for file in project_info.info("CPU_INFOS")["PC_SRC"]:
257 for file in asm_files:
259 for file in project_info.info("CPU_INFOS")["CPPA_SRC"]:
261 for file in project_info.info("CPU_INFOS")["CXX_SRC"]:
263 for file in project_info.info("CPU_INFOS")["ASRC"]:
266 csrc = " \\\n\t".join(csrc) + " \\"
268 pcsrc = " \\\n\t".join(pcsrc) + " \\"
269 cppasrc = set(cppasrc)
270 cppasrc = " \\\n\t".join(cppasrc) + " \\"
272 cxxsrc = " \\\n\t".join(cxxsrc) + " \\"
274 asrc = " \\\n\t".join(asrc) + " \\"
275 constants = "\n".join([os.path.basename(project_info.info("PROJECT_PATH")) + "_" + key + " = " + unicode(value) for key, value in constants.items()])
276 return csrc, pcsrc, cppasrc, cxxsrc, asrc, constants
278 def findModuleFiles(module, project_info):
279 # Find the files related to the selected module
282 # .c files related to the module and the cpu architecture
283 for filename, path in project_info.searchFiles(module + ".c"):
284 path = path.replace(project_info.info("BERTOS_PATH") + os.sep, "")
285 path = replaceSeparators(path)
286 cfiles.append(path + "/" + filename)
287 # .s files related to the module and the cpu architecture
288 for filename, path in project_info.searchFiles(module + ".s") + \
289 project_info.searchFiles(module + ".S"):
290 path = path.replace(project_info.info("BERTOS_PATH") + os.sep, "")
291 path = replaceSeparators(path)
292 sfiles.append(path + "/" + filename)
293 # .c and .s files related to the module and the cpu tags
294 tags = project_info.info("CPU_INFOS")["CPU_TAGS"]
296 # Awful, but secure check for version
297 # TODO: split me in a method/function
299 version_string = bertosVersion(project_info.info("BERTOS_PATH"))
300 version_list = [int(i) for i in version_string.split()[-1].split('.')]
302 # If the version file hasn't a valid version number assume it's an older
304 version_list = [0, 0]
305 if version_list < [2, 5]:
306 # For older versions of BeRTOS add the toolchain to the tags
307 tags.append(project_info.info("CPU_INFOS")["TOOLCHAIN"])
310 for filename, path in project_info.searchFiles(module + "_" + tag + ".c"):
311 path = path.replace(project_info.info("BERTOS_PATH") + os.sep, "")
313 path = replaceSeparators(path)
314 cfiles.append(path + "/" + filename)
315 for filename, path in project_info.searchFiles(module + "_" + tag + ".s") + \
316 project_info.searchFiles(module + "_" + tag + ".S"):
317 path = path.replace(project_info.info("BERTOS_PATH") + os.sep, "")
318 path = replaceSeparators(path)
319 sfiles.append(path + "/" + filename)
320 return cfiles, sfiles
322 def replaceSeparators(path):
324 Replace the separators in the given path with unix standard separator.
327 path = path.replace(os.sep, "/")
331 path = os.environ["PATH"]
333 path = path.split(";")
335 path = path.split(":")
338 def findToolchains(path_list):
340 for element in path_list:
341 for toolchain in glob.glob(element+ "/" + const.GCC_NAME):
342 toolchains.append(toolchain)
343 return list(set(toolchains))
345 def getToolchainInfo(output):
347 expr = re.compile("Target: .*")
348 target = expr.findall(output)
350 info["target"] = target[0].split("Target: ")[1]
351 expr = re.compile("gcc version [0-9,.]*")
352 version = expr.findall(output)
353 if len(version) == 1:
354 info["version"] = version[0].split("gcc version ")[1]
355 expr = re.compile("gcc version [0-9,.]* \(.*\)")
356 build = expr.findall(output)
358 build = build[0].split("gcc version ")[1]
359 build = build[build.find("(") + 1 : build.find(")")]
360 info["build"] = build
361 expr = re.compile("Configured with: .*")
362 configured = expr.findall(output)
363 if len(configured) == 1:
364 info["configured"] = configured[0].split("Configured with: ")[1]
365 expr = re.compile("Thread model: .*")
366 thread = expr.findall(output)
368 info["thread"] = thread[0].split("Thread model: ")[1]
371 def getToolchainName(toolchain_info):
372 name = "GCC " + toolchain_info["version"] + " - " + toolchain_info["target"].strip()
375 def getTagSet(cpu_info):
378 tag_set |= set([cpu["CPU_NAME"]])
379 tag_set |= set(cpu["CPU_TAGS"])
380 tag_set |= set([cpu["TOOLCHAIN"]])
384 def getInfos(definition):
386 D.update(const.CPU_DEF)
387 def include(filename, dict = D, directory=definition[1]):
388 execfile(directory + "/" + filename, {}, D)
389 D["include"] = include
390 include(definition[0], D)
391 D["CPU_NAME"] = definition[0].split(".")[0]
392 D["DEFINITION_PATH"] = definition[1] + "/" + definition[0]
396 def getCommentList(string):
397 comment_list = re.findall(r"/\*{2}\s*([^*]*\*(?:[^/*][^*]*\*+)*)/", string)
398 comment_list = [re.findall(r"^\s*\* *(.*?)$", comment, re.MULTILINE) for comment in comment_list]
401 def loadModuleDefinition(first_comment):
403 module_definition = {}
404 for num, line in enumerate(first_comment):
405 index = line.find("$WIZ$")
409 exec line[index + len("$WIZ$ "):] in {}, module_definition
411 raise ParseError(num, line[index:])
412 elif line.find("\\brief") != -1:
413 module_definition["module_description"] = line[line.find("\\brief") + len("\\brief "):]
415 if "module_name" in module_definition:
416 module_name = module_definition[const.MODULE_DEFINITION["module_name"]]
417 del module_definition[const.MODULE_DEFINITION["module_name"]]
418 module_dict[module_name] = {}
419 if const.MODULE_DEFINITION["module_depends"] in module_definition:
420 depends = module_definition[const.MODULE_DEFINITION["module_depends"]]
421 del module_definition[const.MODULE_DEFINITION["module_depends"]]
422 if type(depends) == str:
424 module_dict[module_name]["depends"] = depends
426 module_dict[module_name]["depends"] = ()
427 if const.MODULE_DEFINITION["module_configuration"] in module_definition:
428 module_dict[module_name]["configuration"] = module_definition[const.MODULE_DEFINITION["module_configuration"]]
429 del module_definition[const.MODULE_DEFINITION["module_configuration"]]
431 module_dict[module_name]["configuration"] = ""
432 if "module_description" in module_definition:
433 module_dict[module_name]["description"] = module_definition["module_description"]
434 del module_definition["module_description"]
435 if const.MODULE_DEFINITION["module_harvard"] in module_definition:
436 harvard = module_definition[const.MODULE_DEFINITION["module_harvard"]]
437 module_dict[module_name]["harvard"] = harvard
438 del module_definition[const.MODULE_DEFINITION["module_harvard"]]
439 if const.MODULE_DEFINITION["module_hw"] in module_definition:
440 hw = module_definition[const.MODULE_DEFINITION["module_hw"]]
441 del module_definition[const.MODULE_DEFINITION["module_hw"]]
444 module_dict[module_name]["hw"] = hw
446 module_dict[module_name]["hw"] = ()
447 if const.MODULE_DEFINITION["module_supports"] in module_definition:
448 supports = module_definition[const.MODULE_DEFINITION["module_supports"]]
449 del module_definition[const.MODULE_DEFINITION["module_supports"]]
450 module_dict[module_name]["supports"] = supports
451 module_dict[module_name]["constants"] = module_definition
452 module_dict[module_name]["enabled"] = False
453 return to_be_parsed, module_dict
455 def isSupported(project, module=None, property_id=None):
456 if not module and property_id:
457 item = project.info("CONFIGURATIONS")[property_id[0]][property_id[1]]["informations"]
459 item = project.info("MODULES")[module]
460 tag_dict = project.info("ALL_CPU_TAGS")
461 if "supports" in item:
462 support_string = item["supports"]
465 exec "supported = " + support_string in tag_dict, supported
467 raise SupportedException(support_string)
468 return supported["supported"]
472 def loadDefineLists(comment_list):
474 for comment in comment_list:
475 for num, line in enumerate(comment):
476 index = line.find("$WIZ$")
479 exec line[index + len("$WIZ$ "):] in {}, define_list
481 raise ParseError(num, line[index:])
482 for key, value in define_list.items():
483 if type(value) == str:
484 define_list[key] = (value,)
487 def getDescriptionInformations(comment):
489 Take the doxygen comment and strip the wizard informations, returning the tuple
490 (comment, wizard_information)
495 for num, line in enumerate(comment):
496 index = line.find("$WIZ$")
499 brief += line[:index].strip()
501 description += " " + line[:index]
503 exec line[index + len("$WIZ$ "):] in {}, information
505 raise ParseError(num, line[index:])
508 brief += line.strip()
510 description += " " + line
511 description = description.strip()
512 return brief.strip(), description.strip(), information
514 def getDefinitionBlocks(text):
516 Take a text and return a list of tuple (description, name-value).
519 block_tmp = re.finditer(r"/\*{2}\s*([^*]*\*(?:[^/*][^*]*\*+)*)/\s*#define\s+((?:[^/]*?/?)+)\s*?(?:/{2,3}[^<].*?)?$", text, re.MULTILINE)
520 for match in block_tmp:
521 # Only the first element is needed
522 comment = match.group(1)
523 define = match.group(2)
524 start = match.start()
525 block.append(([re.findall(r"^\s*\* *(.*?)$", line, re.MULTILINE)[0] for line in comment.splitlines()], define, start))
526 for match in re.finditer(r"/{3}\s*([^<].*?)\s*#define\s+((?:[^/]*?/?)+)\s*?(?:/{2,3}[^<].*?)?$", text, re.MULTILINE):
527 comment = match.group(1)
528 define = match.group(2)
529 start = match.start()
530 block.append(([comment], define, start))
531 for match in re.finditer(r"#define\s*(.*?)\s*/{3}<\s*(.+?)\s*?(?:/{2,3}[^<].*?)?$", text, re.MULTILINE):
532 comment = match.group(2)
533 define = match.group(1)
534 start = match.start()
535 block.append(([comment], define, start))
538 def formatParamNameValue(text):
540 Take the given string and return a tuple with the name of the parameter in the first position
541 and the value in the second.
543 block = re.findall("\s*([^\s]+)\s*(.+?)\s*$", text, re.MULTILINE)
546 def loadConfigurationInfos(path):
548 Return the module configurations found in the given file as a dict with the
549 parameter name as key and a dict containig the fields above as value:
550 "value": the value of the parameter
551 "description": the description of the parameter
552 "informations": a dict containig optional informations:
553 "type": "int" | "boolean" | "enum"
554 "min": the minimum value for integer parameters
555 "max": the maximum value for integer parameters
556 "long": boolean indicating if the num is a long
557 "unsigned": boolean indicating if the num is an unsigned
558 "value_list": the name of the enum for enum parameters
559 "conditional_deps": the list of conditional dependencies for boolean parameters
561 configuration_infos = {}
562 configuration_infos["paramlist"] = []
563 for comment, define, start in getDefinitionBlocks(open(path, "r").read()):
564 name, value = formatParamNameValue(define)
565 brief, description, informations = getDescriptionInformations(comment)
566 configuration_infos["paramlist"].append((start, name))
567 configuration_infos[name] = {}
568 configuration_infos[name]["value"] = value
569 configuration_infos[name]["informations"] = informations
570 if not "type" in configuration_infos[name]["informations"]:
571 configuration_infos[name]["informations"]["type"] = findParameterType(configuration_infos[name])
572 if ("type" in configuration_infos[name]["informations"] and
573 configuration_infos[name]["informations"]["type"] == "int" and
574 configuration_infos[name]["value"].find("L") != -1):
575 configuration_infos[name]["informations"]["long"] = True
576 configuration_infos[name]["value"] = configuration_infos[name]["value"].replace("L", "")
577 if ("type" in configuration_infos[name]["informations"] and
578 configuration_infos[name]["informations"]["type"] == "int" and
579 configuration_infos[name]["value"].find("U") != -1):
580 configuration_infos[name]["informations"]["unsigned"] = True
581 configuration_infos[name]["value"] = configuration_infos[name]["value"].replace("U", "")
582 if "conditional_deps" in configuration_infos[name]["informations"]:
583 if (type(configuration_infos[name]["informations"]["conditional_deps"]) == str or
584 type(configuration_infos[name]["informations"]["conditional_deps"]) == unicode):
585 configuration_infos[name]["informations"]["conditional_deps"] = (configuration_infos[name]["informations"]["conditional_deps"], )
586 elif type(configuration_infos[name]["informations"]["conditional_deps"]) == tuple:
589 configuration_infos[name]["informations"]["conditional_deps"] = ()
590 configuration_infos[name]["description"] = description
591 configuration_infos[name]["brief"] = brief
592 return configuration_infos
594 def updateConfigurationValues(def_conf, user_conf):
595 for param in def_conf["paramlist"]:
596 if param[1] in user_conf and "value" in user_conf[param[1]]:
597 def_conf[param[1]]["value"] = user_conf[param[1]]["value"]
600 def findParameterType(parameter):
601 if "value_list" in parameter["informations"]:
603 if "min" in parameter["informations"] or "max" in parameter["informations"] or re.match(r"^\d+U?L?$", parameter["value"]) != None:
606 def sub(string, parameter, value):
608 Substitute the given value at the given parameter define in the given string
610 return re.sub(r"(?P<define>#define\s+" + parameter + r"\s+)([^\s]+)", r"\g<define>" + value, string)
612 def isInt(informations):
614 Return True if the value is a simple int.
616 if ("long" not in informatios or not informations["long"]) and ("unsigned" not in informations or informations["unsigned"]):
621 def isLong(informations):
623 Return True if the value is a long.
625 if "long" in informations and informations["long"] and "unsigned" not in informations:
630 def isUnsigned(informations):
632 Return True if the value is an unsigned.
634 if "unsigned" in informations and informations["unsigned"] and "long" not in informations:
639 def isUnsignedLong(informations):
641 Return True if the value is an unsigned long.
643 if "unsigned" in informations and "long" in informations and informations["unsigned"] and informations["long"]:
648 class ParseError(Exception):
649 def __init__(self, line_number, line):
650 Exception.__init__(self)
651 self.line_number = line_number
654 class SupportedException(Exception):
655 def __init__(self, support_string):
656 Exception.__init__(self)
657 self.support_string = support_string