def evaluate(self, env): try: # special-casing builtin functions try: return builtins[self.name] except KeyError: pass closure = env[self.name] except KeyError as e: #print "evaluating", self, env raise UndefinedVariable(e.args[0]) return closure() # invocate the closure
def evaluate(self, env):
function_value = evaluate(self.function_expr, env) # Schauen Sie bitte auf die Methode call in der Klasse function.
if not isinstance(function_value, tuple):
raise NotCallable(function_value)
function = function_value[0]
function_env = function_value[1]
if len(self.act_args) != len(function.args):
raise WrongNumOfArguments
fenv = dict(function_env)
if function.name:
fenv[function.name] = closure(function_value, {})
fenv.update(zip(function.args, map(lambda a: closure(a, env), self.act_args)))
#for key in function_env:
# fenv[key] = function_env[key]
#print "%s(%s)"%(self.function_expr, ','.join(map(str, evaluate(self.act_args, env))))
return function.call(fenv)
def evaluate(self, env): # shall return a structure
if not self.fields:
return evaluate(self.value, env)
else:
struct = evaluate(self.struct, env)
if not isinstance(struct, dict):
#print self.struct, struct, self.fields, self.value
raise ForvelkiError("unable to update field %s of non-structure %s" % (self.fields[0], self.struct))
nd = dict(struct)
fields = deque(self.fields)
updated_field = fields.popleft()
next_struct = nd[updated_field]() if updated_field in nd else {}
nd[updated_field] = closure(field_update(next_struct, fields, self.value), env)
return evaluate(closed_structure(nd), env)
def evaluate(self, env):
closed = {}
for key in self:
closed[key] = closure(self[key], env)
return closed_structure(closed)
def call(self, env): for assign in self.assigns: env[assign.name] = closure(assign.value, env) return evaluate(self.expr, env)
