def declare_var(self):
"""
Declare variables
"""
self.match("TK_VAR")
variables_initialized = []
while self.curr_t[1] == "TK_ID":
if self.curr_t not in variables_initialized:
variables_initialized.append(self.curr_t)
self.match("TK_ID")
if self.curr_t[1] == "TK_COMMA":
self.match("TK_COMMA")
else:
raise NameError("Variable already declared" + self.curr_t[1])
self.match("TK_COLON")
data_type = Aux.get_type(self.curr_t[1])
self.match(data_type)
if data_type == "TK_ARRAY":
self.match("TK_LEFT_BRACKET")
access_type, lower_bound, upper_bound = self.range_array(self.curr_t)
self.match("TK_RANGE")
self.match("TK_RIGHT_BRACKET")
self.match("TK_OF")
if self.curr_t[1] == "TK_INTEGER":
assignment_type = self.curr_t[1]
self.match("TK_INTEGER")
elif self.curr_t[1] == "TK_REAL":
assignment_type = self.curr_t[1]
self.match("TK_REAL")
elif self.curr_t[1] == "TK_CHAR":
assignment_type = self.curr_t[1]
self.match("TK_CHAR")
else:
raise TypeError("Unsupported types: " + self.curr_t[1])
self.match("TK_SEMICOLON")
for variable in variables_initialized:
array_symb = Symbol(variable[0], 'TK_ARRAY', 'ARRAY', self.data_indicator)
array_symb.access_type = access_type
array_symb.lower_bound = lower_bound
array_symb.upper_bound = upper_bound
array_symb.assignment_type = assignment_type
self.symbol_table.append(array_symb)
self.data_indicator += 4 * int(upper_bound) - int(lower_bound)
else:
self.match("TK_SEMICOLON")
for variable in variables_initialized:
variable_symb = Symbol(variable[0], data_type, "VARIABLE", self.data_indicator)
self.data_indicator += 1
self.symbol_table.append(variable_symb)
self.data_indicator += 1
if self.curr_t[1] == "TK_VAR":
self.declare_var()
else:
self.begin()
