def token_pow(self, result):
result = self.token_un(result)
hold = TTree()
while self.token != 'end' and (self.token == '^'):
self.get_token()
hold = self.token_brackets(hold)
result = TTree(result, '^', hold)
return result
def token_and(self, result):
result = self.token_not(result)
hold = TTree()
while not self.token == 'end' and self.token == 'and':
self.get_token()
hold = self.token_not(hold)
result = TTree(result, 'and', hold)
return result
def token_mul(self, result):
result = self.token_pow(result)
hold = TTree()
while self.token != 'end' and (self.token == '*' or self.token == '/'):
sign = self.token
self.get_token()
hold = self.token_pow(hold)
result = TTree(result, sign, hold)
return result
def token_add(self, result):
result = self.token_mul(result)
hold = TTree()
while not self.token == 'end' and (
self.token == '+' or self.token == '-' or self.token == '>' or
self.token == '<' or self.token == '>=' or self.token == '<='
or self.token == '<>' or self.token == '='):
sign = self.token
self.get_token()
hold = self.token_mul(hold)
result = TTree(result, sign, hold)
return result
def token_not(self, result):
sign = self.token
if (self.token_type == 'delimiter') and sign == 'not':
self.get_token()
result = self.token_add(result)
if sign == 'not':
result = TTree(sign, result)
return result
def parse_return(self):
if len(self.current_block_name) == 0 or self.is_begin_block is False:
self.say_error('def_domain_err')
# Считываем выражение
exp = self.get_exp(TTree())
self.domain_list[len(self.domain_list) - 1].set_result(exp)
if self.token != 'eol':
self.say_error('syntax_err')
def token_un(self, result):
sign = self.token
if (self.token_type == 'delimiter') and (sign == '+' or sign == '-'):
self.get_token()
result = self.token_brackets(result)
if sign == '+' or sign == '-':
result = TTree(sign, result)
return result
def token_func(self, result):
fun_token = self.token
hold = TTree()
hold1 = TTree()
self.get_token()
if self.token == 'end' or self.token != '(':
self.say_error('syntax_err')
self.get_token()
result = self.token_add(result)
i = self.find_domain_name(fun_token)
if i != -1:
# Обработка вызова функции, описывающей подобласть
if self.token != ',':
self.say_error('syntax_err')
self.get_token()
hold = self.token_add(hold) # Аргумент y
if self.token == ',':
self.get_token()
hold1 = self.token_add(hold1) # Аргумент z
if self.token != ')':
self.say_error('syntax_err')
arg_list = list(self.domain_list[i].arguments.keys())
x = self.domain_list[i].arguments[arg_list[0]]
y = self.domain_list[i].arguments[arg_list[1]]
if len(arg_list) > 2:
z = self.domain_list[i].arguments[arg_list[2]]
else:
z = TTree()
result = TTree(self.domain_list[i].result, x, y, z, result, hold,
hold1)
else:
if self.token == ',':
self.get_token()
hold = self.token_add(hold)
result = TTree(fun_token, result, hold)
if self.token != ')':
self.say_error('syntax_err')
return result
def assignment(self):
if self.is_begin_block is False or len(self.current_block_name) == 0:
self.say_error('def_domain_err')
# Считываем имя переменной
self.get_token()
name = self.token
if name in self.domain_list[len(self.domain_list) - 1].arguments:
self.say_error('assign_err')
self.get_token()
if self.token != '=':
self.say_error('syntax_err')
# Считываем выражение
exp = self.get_exp(TTree())
if name in self.domain_list[len(self.domain_list) - 1].variables:
self.domain_list[len(self.domain_list) - 1].set_variable(name, exp)
else:
self.domain_list[len(self.domain_list) - 1].add_variable(name, exp)
if self.token != 'eol':
self.say_error('syntax_err')
def token_prim(self, result):
if self.token_type == 'digit':
val = float(self.token)
result = TTree(val)
elif self.token_type == 'function':
result = self.token_func(result)
elif self.token_type == 'variable':
if self.token in self.domain_list[len(self.domain_list) -
1].arguments:
result = self.domain_list[len(self.domain_list) -
1].arguments[self.token]
elif self.token in self.domain_list[len(self.domain_list) -
1].variables:
result = self.domain_list[len(self.domain_list) -
1].variables[self.token]
else:
self.say_error('undef_err')
else:
self.say_error('syntax_err')
self.get_token()
return result
def add_variable(self, name, value=TTree()):
if name in self.variables:
raise TException('redefinition_err')
self.variables.setdefault(name, value)
def add_argument(self, name):
if name in self.arguments:
raise TException('redefinition_err')
self.arguments.setdefault(name, TTree())
def __init__(self):
self.name = '' # Название геометрического объекта
self.arguments = {} # Таблица аргументов (координат)
self.variables = {} # Таблица переменных
self.result = TTree(
) # Дерево разбора функционального выражения, описывающего object