def add_how(self, text, premise):
"""
adds a source to an premise of this argument
premise will be created or modified
source may be a string or list of strings
"""
txt = self._validate_premise(premise)
if not txt:
raise MissingAssertionException("tried to add statement to non "
"existing Premise")
if not isinstance(text, list):
text = [text]
for s in text:
if not isinstance(s, str):
raise UnrecognizedSourceFormat
self._premises[txt].add_how_statement(s)
def add_premise(self, premise):
""" add an premise to this argument
premise should be an Premise object
if premise is a string, an premise will be created from it
if premise is a dictionary, an premise will be created from data
if premise is a list, an premise will be created with list as statements
"""
if isinstance(premise, dict):
premise = Premise("dummy").from_json(premise)
if premise.description == "dummy":
raise BadAssertionJson("no premise text given")
elif isinstance(premise, str):
premise = Premise(premise)
elif isinstance(premise, list):
if len(premise):
for s in premise:
if not isinstance(s, str) and not isinstance(s, Statement):
raise UnrecognizedStatementFormat(
"Tried to create "
"an premise from invalid statements list")
text = premise[0]
statements = premise[1:]
premise = Premise(text, statements)
else:
raise MissingStatementException("Empty Statements list "
"provided")
if not isinstance(premise, Premise):
raise MissingAssertionException("Tried to add a non Premise "
"object")
if premise.description.text not in self._premises:
self._premises[premise.description.text] = premise
else:
self._premises[premise.description.text].update(premise)
return self._premises[premise.description.text]
def add_statement(self, statement, premise):
"""
adds a statement to an premise of this argument
premise will be created or modified
statement may be a string, Statement, list of strings or list of Statements
"""
txt = self._validate_premise(premise)
if not txt:
raise MissingAssertionException("tried to add statement to non "
"existing Premise")
if not isinstance(statement, list):
statement = [statement]
for s in statement:
if not isinstance(s, Statement) and not isinstance(s, str):
raise UnrecognizedStatementFormat("Tried to create a "
"statement from bad input "
"type: " + str(type(s)))
self._premises[txt].add_statement(s)