def declarations():
global line_number
line_number = get_line_number()
global synch_set
global memory_counter
line = tokens[0]
token = peek_token()
if token == 'var':
match('var')
token = tokens[0]
match('id')
match(':')
the_type = type_()
if type(the_type) is tuple:
array_size = the_type[1]
the_type = the_type[0]
variable_types.update({token[1]: the_type})
checking = nodes
value_counter = 0
func = set_function_name()
if nodes:
green_node = nodes[0]
while green_node.right_sibling is not None:
green_node = green_node.right_sibling
if green_node.right_sibling is None:
new_blue_node = BlueNode(token[1], the_type)
memory_counter = 0
new_blue_node.value = memory_counter
if new_blue_node.w_type is 'integer':
memory_counter += 4
elif new_blue_node.w_type is 'real':
memory_counter += 8
elif new_blue_node.w_type == "a-real":
memory_counter += 8 * array_size
elif new_blue_node.w_type == "a-integer":
memory_counter += 4 * array_size
green_node.right_sibling = new_blue_node
nodes.insert(0, green_node.right_sibling)
write_to_memory_file(func, new_blue_node.data, new_blue_node.value)
checking = nodes
match(';')
declarations_()
else:
# synch_set = ['function', 'begin']
del synch_set[:]
synch_set.append('var')
synch_set.append('begin')
synch_set.append('$')
handle_sync()
syntax_error(token, 'var', line_number)
def declarations_():
line = tokens[0]
token = peek_token()
array_size = 0
global line_number
line_number = get_line_number()
global memory_counter
global variable_exist
variable_exist = 0
if token == 'begin':
pass
elif token == 'function':
pass
elif token == 'var':
match('var')
token = tokens[0]
match('id')
match(':')
the_type = type_()
if type(the_type) is tuple:
array_size = the_type[1]
the_type = the_type[0]
variable_types.update({token[1]: the_type})
current_nodes = nodes
if nodes:
node = nodes[0]
while node.right_sibling is not None:
node = node.right_sibling
if node.right_sibling is None:
new_blue_node = BlueNode(token[1], the_type)
new_blue_node.value = memory_counter
if new_blue_node.w_type == 'integer':
memory_counter += 4
elif new_blue_node.w_type == 'real':
memory_counter += 8
elif new_blue_node.w_type == "a-real":
memory_counter += 8 * array_size
elif new_blue_node.w_type == "a-integer":
memory_counter += 4 * array_size
node.right_sibling = new_blue_node
nodes.insert(0, node.right_sibling)
next_node = nodes[1]
counter = 0
current_n = new_blue_node
while current_n.__class__.__name__ is not 'GreenNode':
if new_blue_node.data == next_node.data:
variable_exist = 1
counter += 1
current_n = nodes[counter]
next_node = nodes[counter]
continue
counter += 1
current_n = nodes[counter]
next_node = nodes[counter]
write_to_memory_file('', new_blue_node.data, new_blue_node.value)
if variable_exist == 1:
duplicated_variable(line_number, new_blue_node.data)
testing = nodes
match(';')
declarations_()
else:
# synch_set = ['function', 'begin']
del synch_set[:]
synch_set.append('function')
synch_set.append('begin')
handle_sync()
syntax_error(token, 'begin', 'function', 'var')
