def test_horizontal_if():
lines = [['_']]
fld = Field(1, 1, lines)
stk = Stack()
crt = Caret(stk, fld)
stk.push(174)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Left
stk.push(0)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Right
def test_vertical_if():
lines = [['|']]
fld = Field(1, 1, lines)
stk = Stack()
crt = Caret(stk, fld)
stk.push(174)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Up
stk.push(0)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Down
def test_trampoline():
lines = [['>', '#', '1', '.']]
fld = Field(4, 1, lines)
stk = Stack()
crt = Caret(stk, fld)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Right
crt.move(fld)
crt.read_instruction(fld)
assert crt.current_instruction == '#'
crt.execute_instruction()
crt.move(fld)
crt.read_instruction(fld)
assert crt.current_instruction == '.'
def test_change_direction():
lines = [['>', 'v'], ['^', '<']]
fld = Field(2, 2, lines)
stk = Stack()
crt = Caret(stk, fld)
crt.move(fld)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Right
crt.move(fld)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Down
crt.move(fld)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Left
crt.move(fld)
crt.read_instruction(fld)
crt.execute_instruction()
assert crt.direction == Up
crt.move(fld)
assert crt.pos == Vec(0, 0)
def main(execute=True):
term = Terminal()
if from_file:
field = Field.load_file(filename)
elif from_pipe:
lines = sys.stdin.readlines()
text = lines[0]
for line in lines:
text += line
program = text
field = Field.from_text(program)
else:
return
stack = Stack()
caret = Caret(stack, field, max(3,
to_int(term.height) - field.height), debug)
if debug:
logger.set_output(caret)
caret.executor.execute = execute
logger.debug("Objects created")
# if super_debug:
# input("Continue?")
if debug:
try:
char = readchar()
if char == 'c':
print('\nForced exit')
return
except Exception:
print("You shouldn't use pipe without -p option")
return
# field height shouldn't change
print_field(caret, field, term)
caret.read_instruction(field)
caret.execute_instruction()
if caret.direction == Vec(0, 0):
caret.direction = Right
logger.debug("Starting loop")
while caret.executor.execute:
caret.move(field)
caret.read_instruction(field)
if debug or super_debug:
print_field(caret, field, term)
else:
print(caret.diff, end='')
caret.execute_instruction()
if debug:
char = readchar()
if char == 'c':
print('\nForced exit')
return
logger.debug("Move performed")
print()