def start_interactive_shell():
try:
if command_line_arguments[1] == "-m" and command_line_arguments[
2].isdecimal():
memory_size = int(command_line_arguments[2])
elif command_line_arguments[1].split(
"=")[0] == "--memory-size" and command_line_arguments[1].split(
"=")[1].isdecimal():
memory_size = int(command_line_arguments[1].split("=")[1])
else:
raise IndexError()
if memory_size > 100:
proceed_or_not = input(
f"""You are going to allocate more than {memory_size} nodes or {4 * memory_size} cells. Are you sure? ("n" to exit) """
)
if proceed_or_not == "n":
print("Execution terminated.")
return
interpreter = Interpreter(memory_size)
while True:
cmd = input(">>> ")
try:
interpreter.execute_command(cmd)
except Exception as err:
print(type(err), err)
except IndexError:
print(
"ERROR: Memory options not specified correctly. Use -m [memory size] or --memory-size=[memory size]."
)
def execute_file():
try:
if command_line_arguments[1] == "-m" and command_line_arguments[
2].isdecimal():
try:
file_path = command_line_arguments[3]
except IndexError:
raise FileNotFoundError()
memory_size = int(command_line_arguments[2])
elif command_line_arguments[1].split(
"=")[0] == "--memory-size" and command_line_arguments[1].split(
"=")[1].isdecimal():
try:
file_path = command_line_arguments[2]
except IndexError:
raise FileNotFoundError()
memory_size = int(command_line_arguments[1].split("=")[1])
else:
raise IndexError()
if memory_size > 100:
proceed_or_not = input(f"""
You are going to allocate more than {memory_size} nodes or {4 * memory_size} cells. Are you sure? (y/n) """
)
if proceed_or_not == "n":
print("Execution terminated.")
return
file = open(file_path, "r")
lines = file.readlines()
file.close()
interpreter = Interpreter(memory_size)
line_number = 1
for line in lines:
try:
interpreter.execute_command(line[:-1]) # removing \n
line_number += 1
except Exception as err:
print(f"Line number #{line_number}", type(err), err)
except IndexError:
print(
"ERROR: Memory options not specified correctly. Use -m [memory size] or --memory-size=[memory size]."
)
except FileNotFoundError:
print("ERROR: Module not found!")
def test_print_command(self):
i = Interpreter(100)
i.execute_command("L1 = ((a)(b((c)d))ef(g(h)))")
i.execute_command("Print L1")
def test_invalid_list_expression_raising_syntax_error(self):
i = Interpreter(100)
self.assertRaises(
SyntaxError, i.execute_command,
"salam = ((*)(*))(8))") # Invalid list expression raises error
def test_garbage_collect(self):
i = Interpreter(100)
i.execute_command("a = ((((Z)Y)X)TM(A(B(C))))")
i.execute_command("b = ((V)PQ(R(S)))")
i.execute_command("c = (123(8)45(6(7)))")
i.execute_command("Print c")
i.execute_command("Make (ABC) Child of b at (***(** Without Root")
i.execute_command("Print b")
i.execute_command("Make b Child of a at (*** Without Root")
i.execute_command("Print a")
i.execute_command("b = (D(E)(F(H))(G))")
i.execute_command("Print b")
i.execute_command("c = (B)")
i.execute_command(
"Garbage-Collect"
) # We can see that list c was garbage collected and returned to memory
def test_different_variable_name(self):
i = Interpreter(100)
i.execute_command("d222_good_var3 = (((((A(C)B)))))"
) # testing variable names with numbers
i.execute_command("Print d222_good_var3")
def test_make_child_with_root_command(self):
i = Interpreter(100)
i.execute_command("b = ((V)PQ(R(S)))")
i.execute_command("Make (ABC) Child of b at (***(** With Root")
i.execute_command("Print b")
def test_make_child_command(self):
i = Interpreter(100)
i.execute_command("a = ((((Z)Y)X)TM(A(B(C))))")
i.execute_command("b = ((V)PQ(R(S)))")
i.execute_command("Make (ABC) Child of b at (***(** Without Root")
i.execute_command("Print b")
i.execute_command("Make b Child of a at (*** Without Root")
i.execute_command("Print a")
def test_empty_list_command(self):
i = Interpreter(100)
i.execute_command("salam = ()")
i.execute_command("Print salam")
def test_delete_command(self):
i = Interpreter(100)
i.execute_command("salam = ((a)(b((c)d))ef(g(h)))")
i.execute_command("Delete salam from (**")
i.execute_command("Print salam")