def relative_links(num):
data_begin = find.attribute(num, "data_begin")
data_end = find.attribute(num, "segment_end")
index = data_begin
while index < data_end:
obj_type, obj_value = read.entity(index)
if obj_type == "link":
write.entity(index, "link", data_begin + obj_value)
index += memory_control.determine_object_size(obj_type, obj_value)
elif obj_type == "chars":
index += memory_control.determine_object_size(obj_type, obj_value)
else:
index += 2
def string_segment(data):
data_size = memory_control.determine_object_size("char_list", data)
seg_size = memory_control.determine_segment_size("string_segment",
data_size)
num = add.string_segment(self_length=seg_size)
put.string_segment(num, "char_list", data)
return num
def stack(num, obj_type, value):
check_type("stack", obj_type)
obj_size = memory_control.determine_object_size(obj_type, value)
top = find.attribute(num, "first_empty_cell")
place = check_free_place(num, obj_size)
check_stack_overflow(num, place)
write.entity(top, obj_type, value)
change_stack(num, top + obj_size, top, place)
def program_code(num):
data_begin = find.attribute(num, "data_begin")
index = data_begin
obj_type, command = read.entity(index)
while obj_type != "none":
display.command_with_args(index)
com_name, args = read.command_with_args(index)
index += memory_control.determine_object_size("command_with_args", args)
obj_type, command = read.entity(index)
def command_with_args(num):
print(num, end=" ")
entity(num)
args = []
obj_type, command_name = read.entity(num)
index = num + 2
for i in range(commands_args_number[commands_abbreviation[command_name]]):
obj_type, value = read.entity(index)
print("\t", end="")
entity(index)
index += memory_control.determine_object_size(obj_type, value)
def segment_body(num):
data_begin, data_end = data_range(num)
top = find.attribute(num, "first_empty_cell")
index = data_begin
obj_type, obj_value = read.entity(index)
while index < top:
print(index, end=" ")
display.entity(index)
index += memory_control.determine_object_size(obj_type, obj_value)
if index < data_end:
obj_type, obj_value = read.entity(index)
print()
def command_with_args(num):
args = []
obj_type, command_name = entity(num)
if obj_type != "command":
raise LowerCommandError(f"Ячейка #{num} содержит не команду, а "
f"{obj_type}")
index = num + 2
for i in range(commands_args_number[commands_abbreviation[command_name]]):
obj_type, value = entity(index)
args += [[obj_type, value]]
index += memory_control.determine_object_size(obj_type, value)
return command_name, args
def command_with_args(num, command_name, args):
if len(args) != commands_args_number[command_name]:
raise LowerCommandError(f"Неправильное число аргументов команды "
f"{command_name}: {len(args)} вместо "
f"{commands_args_number[command_name]}")
entity(num, "command", command_name)
index = num + 2
for arg in args:
obj_type = arg["type"]
obj_value = arg["value"]
entity(index, obj_type, obj_value)
index += memory_control.determine_object_size(obj_type, obj_value)
def string_segment(num, obj_type, value):
check_type("string", obj_type)
last_num = get_last(num)
obj_size = memory_control.determine_object_size(obj_type, value)
top = find.attribute(last_num, "first_empty_cell")
place = check_free_place(last_num, obj_size)
if place >= 0:
write.char_list(top, value)
change_data(last_num, top + obj_size, place)
else:
part_1, part_2 = split_cells(obj_size, place, value)
write.char_list(top, part_1)
fill_segment(last_num)
new_num = extend.string_segment(last_num)
string_segment(num, obj_type, part_2)
def data_segment(num, obj_type, value):
top = find.attribute(num, "first_empty_cell")
obj_size = memory_control.determine_object_size(obj_type, value)
place = check_free_place(num, obj_size)
if place >= 0:
write.entity(top, obj_type, value)
change_data(num, top + obj_size, place)
index = top
else:
if not find.is_last(num):
next_num = find.attribute(num, "next_segment")
index = data_segment(next_num, obj_type, value)
else:
new_num = extend.data_segment(num)
index = data_segment(new_num, obj_type, value)
return index
def list_segment(data):
data_size = memory_control.determine_object_size("link_list", data)
seg_size = memory_control.determine_segment_size("list_segment", data_size)
num = add.list_segment(self_length=seg_size)
put.list_segment(num, "link_list", data)
return num
def target_cell(cell, args):
command_size = memory_control.determine_object_size(
"command_with_args", args)
cell += command_size
attribute(seg_links["system"], "target_cell", cell)
