def _conclusion(self, state, lhs_truth_value, rhs_truth_value,
truth_value):
"""
Return the conclusion motivation the truth value of this formula
:param state: the state in which the formula should be evaluated.
:type state: modelchecker.models.state
:param truth_value: the truth value of this formula
:type truth_value: bool
:return: String with the motivation
:rtype: String
"""
if (truth_value):
return '{models} holds since {condition}.'.format(
models=models(state, self, '$'),
condition=self._truth_condition(state))
else:
conclusion = Template('$models does not hold since $reason.')
if not lhs_truth_value:
reason = '{condition} does not hold'.format(
condition=models(state, self.lhs, '$'))
if not rhs_truth_value:
reason = '{condition} does not hold'.format(
condition=models(state, self.rhs, '$'))
return conclusion.substitute(reason=reason,
models=models(state, self, '$'))
def _conclusion(self, state, truth_value):
if truth_value:
return '{models} holds since {condition}.'.format(
models=models(state, self, '$'),
condition=self._truth_condition(state, int(truth_value)))
else:
return '{models} does not hold since {condition}.'.format(
models=models(state, self, '$'),
condition=self._truth_condition(state, int(truth_value)))
def _truth_condition(self, state):
"""
Return the condition under which this formula is true as a string.
:param state: the state in which the formula should be evaluated.
:type state: modelchecker.models.state
:return: String with the truth condition
:rtype: String
"""
return '{lhs_models} and {rhs_models}'.format(
lhs_models=models(state, self.lhs, '$'),
rhs_models=models(state, self.rhs, '$'),
)
def _conclusion(self, state, truth_value):
"""
Return the conclusion motivation the truth value of this formula
:param state: the state in which the formula should be evaluated.
:type state: modelchecker.models.state
:param truth_value: the truth value of this formula
:type truth_value: bool
:return: String with the motivation
:rtype: String
"""
if (truth_value):
return '{models} holds since {condition} does not hold.'.format(
models=models(state, self, '$'),
condition=models(state, self.lhs, '$'))
else:
return '{models} does not hold since {condition} holds.'.format(
models=models(state, self, '$'),
condition=models(state, self.lhs, '$'))
def _truth_condition(self, state):
"""
Return the condition under which this formula is true as a string.
:param state: the state in which the formula should be evaluated.
:type state: modelchecker.models.state
:return: String with the truth condition
:rtype: String
"""
return '{lhs_models} for all $t$ with ${state} \longrightarrow t$'.format(
lhs_models=models('t', self.lhs, '$'), state=state.name)
def _truth_condition(self, state, states=None):
"""
Return the condition under which this formula is true as a string.
:param state: the state in which the formula should be evaluated.
:type state: modelchecker.models.state
:return: String with the truth condition
:rtype: String
"""
return '{lhs_models} for all $t$ with $({state}, t) \\in R_{{{agent}}}$'.format(
lhs_models=models('t', self.lhs, '$'),
agent=self.agent,
state=state.name)
def _truth_condition(self, state):
"""
Return the condition under which this formula is true as a string.
:param state: the state in which the formula should be evaluated.
:type state: modelchecker.models.state
:return: String with the truth condition
:rtype: String
"""
return '{lhs_models} for all $t$ such that $({state}, t) \in {set}$'.format(
lhs_models=models('t', self.lhs, '$'),
state=state.name,
set=self._agents_as_string(agents=list(state.model.agents),
operator='\cap'))
def _condition(self, state):
return '{models} iff {condition}.'.format(
models=models(state, self, '$'),
condition=self._truth_condition(state, 1))