def add_objective(self, expr, name=None, scope=None):
"""Adds an objective to the driver.
expr: string
String containing the objective expression.
name: string (optional)
Name to be used to refer to the objective in place of the expression
string.
scope: object (optional)
The object to be used as the scope when evaluating the expression.
"""
if self._max_objectives > 0 and \
len(self._objectives) >= self._max_objectives:
self.parent.raise_exception(
"Can't add objective '%s'. Only %d"
" objectives are allowed" % (expr, self._max_objectives),
RuntimeError)
expr = _remove_spaces(expr)
if expr in self._objectives:
self.parent.raise_exception(
"Trying to add objective '%s' to"
" driver, but it's already there" % expr, AttributeError)
if name is not None and name in self._objectives:
self.parent.raise_exception(
"Trying to add objective '%s' to"
" driver using name '%s', but name is"
" already used" % (expr, name), AttributeError)
scope = self._get_scope(scope)
expreval = Objective(expr, scope)
unresolved_vars = expreval.get_unresolved()
if unresolved_vars:
msg = "Can't add objective '{0}' because of invalid variables {1}"
error = ConnectedExprEvaluator._invalid_expression_error(
unresolved_vars, expreval.text, msg)
self.parent.raise_exception(str(error), type(error))
name = expr if name is None else name
expreval.activate()
self._objectives[name] = expreval
self.parent.config_changed()
def add_response(self, expr, name=None, scope=None):
"""Adds a response to the driver.
expr: string
String containing the response expression.
name: string (optional)
Name to be used to refer to the response in place of the expression
string.
scope: object (optional)
The object to be used as the scope when evaluating the expression.
"""
expr = _remove_spaces(expr)
if expr in self._responses:
self.parent.raise_exception(
"Trying to add response '%s' to"
" driver, but it's already there" % expr, AttributeError)
if name is not None and name in self._responses:
self.parent.raise_exception(
"Trying to add response '%s' to"
" driver using name '%s', but name is"
" already used" % (expr, name), AttributeError)
scope = self._get_scope(scope)
try:
expreval = Response(expr, scope)
unresolved_vars = expreval.get_unresolved()
except AttributeError:
unresolved_vars = [expr]
if unresolved_vars:
msg = "Can't add response '{0}' because of invalid variables {1}"
error = ConnectedExprEvaluator._invalid_expression_error(
unresolved_vars, expr, msg)
self.parent.raise_exception(str(error), type(error))
name = expr if name is None else name
#expreval.activate(self.parent)
self._responses[name] = expreval
self.parent.config_changed()
