kennytm · November 19, 2014 13:33
diff --git a/adjust.py b/adjust.py
 #!/usr/bin/env python3

 def factorize(num):
    while num % 2 == 0:
        yield 2
        num //= 2

    prime = 3
    while prime * prime <= num:
        while num % prime == 0:
            yield prime
            num //= prime
        prime += 2

    if num != 1:
        yield num

 class ExitProgram(Exception):
    pass


 class Field(object):
    def __init__(self):
        self._field = {}
        self._cursor = (0, 0)
        self._direction = 3
        self._acc = 0
        self._stack1 = []
        self._stack2 = []

    def _move_forward(self, steps):
        (x, y) = self._cursor
        if 1 <= self._direction <= 3:
            y -= steps
        if 3 <= self._direction <= 5:
            x += steps
        if 5 <= self._direction <= 7:
            y += steps
        if self._direction in {0, 1, 7}:
            x -= steps
        self._cursor = (x, y)

    def _turn_left(self, steps):
        self._turn_right(-steps)

    def _turn_right(self, steps):
        new_direction = self._direction + steps
        if new_direction < 0:
            raise ValueError("Encountered Bug in official ADJUST interpreter (-ve dir)")
        self._direction = new_direction % 8

    def _lighter_stack(self):
        if not self._stack1:
            if self._stack2:
                return self._stack1
            else:
                return None
        elif not self._stack2:
            return self._stack2

        top1 = self._stack1[-1]
        top2 = self._stack2[-1]
        if top1 < top2:
            return self._stack1
        elif top1 > top2:
            return self._stack2
        else:
            return None

    def _heavier_stack(self):
        lighter_stack = self._lighter_stack()
        if lighter_stack is self._stack1:
            return self._stack2
        elif lighter_stack is self._stack2:
            return self._stack1
        else:
            return None

    def _perform_2(self):
        self._acc = (self._acc >> 3 | self._acc << 5) & 0xff

    def _perform_3(self):
        stack = self._lighter_stack()
        if stack is None:
            stack = self._stack1
            self._turn_right(1)
        elif stack is self._stack1:
            if self._acc:
                self._turn_left(2)
            else:
                self._turn_right(3)
        elif stack is self._stack2:
            self._turn_left(1)

        stack.append(self._acc)
        self._move_forward(1)

    def _perform_5(self):
        self._acc ^= 1

    def _perform_7(self):
        self._move_forward(bin(self._acc).count('1'))

    def _perform_11(self):
        stack = self._heavier_stack() or self._stack2
        try:
            self._acc = stack.pop()
        except IndexError:
            self._acc = 0

    def _perform_13(self):
        try:
            print(chr(self._stack2.pop()), end='')
        except IndexError:
            print('***stack2 is empty!***')
            pass

    def _perform_17(self):
        raise NotImplementedError("Prime factor 17 is not supported.")

    def _perform_19(self):
        try:
            ch = self._stack2.pop()
            self._stack1.append(ch)
        except IndexError:
            if self._acc & 4:
                self._turn_right(2)
            self._move_forward(bin(self._acc & 0b10011000).count('1'))

    def _perform_23(self):
        self._acc = (self._acc << 5) & 0xff

    def _perform_29(self):
        if self._acc == 0:
            self._turn_left(1)
            self._move_forward(2)
            if self._lighter_stack() is self._stack2:
                self._move_forward(1)
            self._turn_right(1)

    def _perform_31(self):
        self._move_forward(1)

    def _perform_37(self):
        lighter_stack = self._lighter_stack()
        if lighter_stack:
            heavier_stack = self._heavier_stack()
            heavier_stack.append(lighter_stack[-1])

    def _perform_41(self):
        heavier_stack = self._heavier_stack()
        if heavier_stack:
            heavier_stack.pop()

    def _perform_43(self):
        self._acc >>= 1
        if self._acc == 0:
            self._move_forward(1)
            self._turn_left(2)

    def _perform_47(self):
        lighter_stack = self._lighter_stack()
        if lighter_stack:
            self._acc = lighter_stack.pop()

    def _perform_53(self):
        def reverse_bits(n):
            return int('{:04b}'.format(n)[::-1], 2)

        if self._lighter_stack() is self._stack1:
            self._acc = (self._acc & 0xf0) | reverse_bits(self._acc & 0xf)
        else:
            self._acc = (self._acc & 0xf) | reverse_bits(self._acc >> 4) << 4

    def _perform_59(self):
        self._turn_right(bin(self._acc).count('1'))

    def _perform_61(self):
        (self._stack1, self._stack2) = (self._stack2, self._stack1)

    def _perform_67(self):
        raise ExitProgram()

    def plot(self, char):
        if self._cursor in self._field:
            raise ValueError('{} is already occupied!', self._cursor)
        self._field[self._cursor] = char

        for factor in reversed(list(factorize(ord(char)))):
            try:
                method = getattr(self, '_perform_' + str(factor))
            except AttributeError:
                self._acc = factor
                continue
            method()
        self._move_forward(1)



    def plot_string(self, string):
        for char in string:
            self.plot(char)

    def print_field(self, target):
        def compute_difference_internal(acc, target):
            xor = acc ^ target
            unshift_amount = 0
            while xor:
                if xor & 1:
                    yield 5
                    xor ^= 1
                    if xor == 0:
                        yield from [2] * ((-unshift_amount) % 8)
                else:
                    yield 2
                    xor = (xor >> 3 | xor << 5) & 0xff
                    unshift_amount += 1

        def recommend_difference(acc, target):
            def characters(m):
                match = m.group()
                fives = match.count('5')
                twos = match.count('2')
                return {
                    (1, 1): 'F',
                    (2, 1): '2',
                    (1, 4): 'P',
                    (0, 1): 'R',
                    (0, 2): 't',
                    (0, 3): '8',
                }[(fives, twos)]

            import re
            string = ''.join(str(x) for x in compute_difference_internal(acc, target))
            return string + ' (' + re.sub('52|552|52222|2{1,3}', characters, string) + ')'


        print()


        min_x = min(c[0] for c in self._field.keys())
        min_y = min(c[1] for c in self._field.keys())
        max_x = max(c[0] for c in self._field.keys())
        max_y = max(c[1] for c in self._field.keys())
        for y in range(min_y, max_y+1):
            for x in range(min_x, max_x+1):
                ch = self._field.get((x, y), '`')
                print(ch, end='')
            print()

        print('\ncurrent state:')
        print('    acc    = {0:3} ({0:08b})'.format(self._acc))
        print('    target = {0:3} ({0:08b})'.format(ord(target)))
        print('    diff   =', recommend_difference(self._acc, ord(target)))
        print('    stack1 =', self._stack1)
        print('    stack2 =', self._stack2)
        print('    direct =', self._direction * 45)


 # acc affecting commands:
 # 2, 5, [11], -23-, 43, [47], [53], >67

 # direction affecting commands:
 # 3, 19, 29, 43, -59-

 # can use:
 # 3, 7, 13, 19, 29, 31, 37, 41, -59-, 61

 field = Field()
 try:
    #0 "
    field.plot_string('K8F8FKAnK')
    #1 H
    field.plot_string('RFF8RFKKA')
    #2 o
    field.plot_string('8FtFFKAnK')
    #3 u
    field.plot_string('RFFRFRFRKKA')
    #4 s
    field.plot_string('FtFtFRKKA')
    #5 t
    field.plot_string('8FtFRKKAKnnK')
    #6 o
    field.plot_string('FRFtFtKKA')
    #7 n
    field.plot_string('KKAnnKnK')
    #8 ,
    field.plot_string('F8FFRFKKA')
    #9 _
    field.plot_string('FF8RFRKKA')
    #10 w
    field.plot_string('tFFFRFRKKA')
    #11 e
    field.plot_string('FtFF8KAnK')
    #12 _
    field.plot_string('RFFFRFFFKKA')
    #13 h
    field.plot_string('FFF8tKAnK')
    #14 a
    field.plot_string('FRF8FRKKA')
    #15 v
    field.plot_string('8FFRFRKKA')
    #16 e
    field.plot_string('8FF8KAnK')
    #17 _
    field.plot_string('RFFFRFFRKKA')
    #18 a
    field.plot_string('tF8tKAnK')
    #19 _
    field.plot_string('88FRKKA')
    #20 p
    field.plot_string('FRFRF8KKA')
    #21 r
    field.plot_string('FtF8RKKA')
    #22 o
    field.plot_string('RFtFRFRKKA')
    #23 b
    field.plot_string('RF8RFRKKA')
    #24 l
    field.plot_string('FFRFtFRKKA')
    #25 e
    field.plot_string('RF88KKA')
    #26 m
    field.plot_string('FF88KAnK')
    #27 .
    field.plot_string('8FRFRFKKA')
    #28 "
    field.plot_string('FF8RFRKKAKnnK')
    #29 _
    field.plot_string('tF8FRKKA')
    #30 -
    field.plot_string('RF8RFRKKAKnnK')
    #31 _
    field.plot_string('F8RFFRKKA')
    #32 J
    field.plot_string('FFFF8FKAnK')
    #33 i
    field.plot_string('FFF8FRKKA')
    #34 m
    field.plot_string('F8tFRKKA')
    #35 _
    field.plot_string('RFF8FRKKA')
    #36 L
    field.plot_string('FFF8FFKAnK')
    #37 o
    field.plot_string('FFFF8RKKA')
    #38 v
    field.plot_string('RFtF8KKA')
    #39 e
    field.plot_string('8FF8KAnK')
    #40 l
    field.plot_string('8FRFtKKA')
    #41 l
    field.plot_string('iA')
    #end.
    field.plot_string('C')
 except ExitProgram:
    field.print_field('"Houston, we have a problem." - Jim Lovell'[40])
	#!/usr/bin/env python3

	def factorize(num):
	while num % 2 == 0:
	yield 2
	num //= 2

	prime = 3
	while prime * prime <= num:
	while num % prime == 0:
	yield prime
	num //= prime
	prime += 2

	if num != 1:
	yield num

	class ExitProgram(Exception):
	pass


	class Field(object):
	def __init__(self):
	self._field = {}
	self._cursor = (0, 0)
	self._direction = 3
	self._acc = 0
	self._stack1 = []
	self._stack2 = []

	def _move_forward(self, steps):
	(x, y) = self._cursor
	if 1 <= self._direction <= 3:
	y -= steps
	if 3 <= self._direction <= 5:
	x += steps
	if 5 <= self._direction <= 7:
	y += steps
	if self._direction in {0, 1, 7}:
	x -= steps
	self._cursor = (x, y)

	def _turn_left(self, steps):
	self._turn_right(-steps)

	def _turn_right(self, steps):
	new_direction = self._direction + steps
	if new_direction < 0:
	raise ValueError("Encountered Bug in official ADJUST interpreter (-ve dir)")
	self._direction = new_direction % 8

	def _lighter_stack(self):
	if not self._stack1:
	if self._stack2:
	return self._stack1
	else:
	return None
	elif not self._stack2:
	return self._stack2

	top1 = self._stack1[-1]
	top2 = self._stack2[-1]
	if top1 < top2:
	return self._stack1
	elif top1 > top2:
	return self._stack2
	else:
	return None

	def _heavier_stack(self):
	lighter_stack = self._lighter_stack()
	if lighter_stack is self._stack1:
	return self._stack2
	elif lighter_stack is self._stack2:
	return self._stack1
	else:
	return None

	def _perform_2(self):
	self._acc = (self._acc >> 3 \| self._acc << 5) & 0xff

	def _perform_3(self):
	stack = self._lighter_stack()
	if stack is None:
	stack = self._stack1
	self._turn_right(1)
	elif stack is self._stack1:
	if self._acc:
	self._turn_left(2)
	else:
	self._turn_right(3)
	elif stack is self._stack2:
	self._turn_left(1)

	stack.append(self._acc)
	self._move_forward(1)

	def _perform_5(self):
	self._acc ^= 1

	def _perform_7(self):
	self._move_forward(bin(self._acc).count('1'))

	def _perform_11(self):
	stack = self._heavier_stack() or self._stack2
	try:
	self._acc = stack.pop()
	except IndexError:
	self._acc = 0

	def _perform_13(self):
	try:
	print(chr(self._stack2.pop()), end='')
	except IndexError:
	print('*stack2 is empty!*')
	pass

	def _perform_17(self):
	raise NotImplementedError("Prime factor 17 is not supported.")

	def _perform_19(self):
	try:
	ch = self._stack2.pop()
	self._stack1.append(ch)
	except IndexError:
	if self._acc & 4:
	self._turn_right(2)
	self._move_forward(bin(self._acc & 0b10011000).count('1'))

	def _perform_23(self):
	self._acc = (self._acc << 5) & 0xff

	def _perform_29(self):
	if self._acc == 0:
	self._turn_left(1)
	self._move_forward(2)
	if self._lighter_stack() is self._stack2:
	self._move_forward(1)
	self._turn_right(1)

	def _perform_31(self):
	self._move_forward(1)

	def _perform_37(self):
	lighter_stack = self._lighter_stack()
	if lighter_stack:
	heavier_stack = self._heavier_stack()
	heavier_stack.append(lighter_stack[-1])

	def _perform_41(self):
	heavier_stack = self._heavier_stack()
	if heavier_stack:
	heavier_stack.pop()

	def _perform_43(self):
	self._acc >>= 1
	if self._acc == 0:
	self._move_forward(1)
	self._turn_left(2)

	def _perform_47(self):
	lighter_stack = self._lighter_stack()
	if lighter_stack:
	self._acc = lighter_stack.pop()

	def _perform_53(self):
	def reverse_bits(n):
	return int('{:04b}'.format(n)[::-1], 2)

	if self._lighter_stack() is self._stack1:
	self._acc = (self._acc & 0xf0) \| reverse_bits(self._acc & 0xf)
	else:
	self._acc = (self._acc & 0xf) \| reverse_bits(self._acc >> 4) << 4

	def _perform_59(self):
	self._turn_right(bin(self._acc).count('1'))

	def _perform_61(self):
	(self._stack1, self._stack2) = (self._stack2, self._stack1)

	def _perform_67(self):
	raise ExitProgram()

	def plot(self, char):
	if self._cursor in self._field:
	raise ValueError('{} is already occupied!', self._cursor)
	self._field[self._cursor] = char

	for factor in reversed(list(factorize(ord(char)))):
	try:
	method = getattr(self, '_perform_' + str(factor))
	except AttributeError:
	self._acc = factor
	continue
	method()
	self._move_forward(1)



	def plot_string(self, string):
	for char in string:
	self.plot(char)

	def print_field(self, target):
	def compute_difference_internal(acc, target):
	xor = acc ^ target
	unshift_amount = 0
	while xor:
	if xor & 1:
	yield 5
	xor ^= 1
	if xor == 0:
	yield from [2] * ((-unshift_amount) % 8)
	else:
	yield 2
	xor = (xor >> 3 \| xor << 5) & 0xff
	unshift_amount += 1

	def recommend_difference(acc, target):
	def characters(m):
	match = m.group()
	fives = match.count('5')
	twos = match.count('2')
	return {
	(1, 1): 'F',
	(2, 1): '2',
	(1, 4): 'P',
	(0, 1): 'R',
	(0, 2): 't',
	(0, 3): '8',
	}[(fives, twos)]

	import re
	string = ''.join(str(x) for x in compute_difference_internal(acc, target))
	return string + ' (' + re.sub('52\|552\|52222\|2{1,3}', characters, string) + ')'


	print()


	min_x = min(c[0] for c in self._field.keys())
	min_y = min(c[1] for c in self._field.keys())
	max_x = max(c[0] for c in self._field.keys())
	max_y = max(c[1] for c in self._field.keys())
	for y in range(min_y, max_y+1):
	for x in range(min_x, max_x+1):
	ch = self._field.get((x, y), '`')
	print(ch, end='')
	print()

	print('\ncurrent state:')
	print(' acc = {0:3} ({0:08b})'.format(self._acc))
	print(' target = {0:3} ({0:08b})'.format(ord(target)))
	print(' diff =', recommend_difference(self._acc, ord(target)))
	print(' stack1 =', self._stack1)
	print(' stack2 =', self._stack2)
	print(' direct =', self._direction * 45)


	# acc affecting commands:
	# 2, 5, [11], -23-, 43, [47], [53], >67

	# direction affecting commands:
	# 3, 19, 29, 43, -59-

	# can use:
	# 3, 7, 13, 19, 29, 31, 37, 41, -59-, 61

	field = Field()
	try:
	#0 "
	field.plot_string('K8F8FKAnK')
	#1 H
	field.plot_string('RFF8RFKKA')
	#2 o
	field.plot_string('8FtFFKAnK')
	#3 u
	field.plot_string('RFFRFRFRKKA')
	#4 s
	field.plot_string('FtFtFRKKA')
	#5 t
	field.plot_string('8FtFRKKAKnnK')
	#6 o
	field.plot_string('FRFtFtKKA')
	#7 n
	field.plot_string('KKAnnKnK')
	#8 ,
	field.plot_string('F8FFRFKKA')
	#9 _
	field.plot_string('FF8RFRKKA')
	#10 w
	field.plot_string('tFFFRFRKKA')
	#11 e
	field.plot_string('FtFF8KAnK')
	#12 _
	field.plot_string('RFFFRFFFKKA')
	#13 h
	field.plot_string('FFF8tKAnK')
	#14 a
	field.plot_string('FRF8FRKKA')
	#15 v
	field.plot_string('8FFRFRKKA')
	#16 e
	field.plot_string('8FF8KAnK')
	#17 _
	field.plot_string('RFFFRFFRKKA')
	#18 a
	field.plot_string('tF8tKAnK')
	#19 _
	field.plot_string('88FRKKA')
	#20 p
	field.plot_string('FRFRF8KKA')
	#21 r
	field.plot_string('FtF8RKKA')
	#22 o
	field.plot_string('RFtFRFRKKA')
	#23 b
	field.plot_string('RF8RFRKKA')
	#24 l
	field.plot_string('FFRFtFRKKA')
	#25 e
	field.plot_string('RF88KKA')
	#26 m
	field.plot_string('FF88KAnK')
	#27 .
	field.plot_string('8FRFRFKKA')
	#28 "
	field.plot_string('FF8RFRKKAKnnK')
	#29 _
	field.plot_string('tF8FRKKA')
	#30 -
	field.plot_string('RF8RFRKKAKnnK')
	#31 _
	field.plot_string('F8RFFRKKA')
	#32 J
	field.plot_string('FFFF8FKAnK')
	#33 i
	field.plot_string('FFF8FRKKA')
	#34 m
	field.plot_string('F8tFRKKA')
	#35 _
	field.plot_string('RFF8FRKKA')
	#36 L
	field.plot_string('FFF8FFKAnK')
	#37 o
	field.plot_string('FFFF8RKKA')
	#38 v
	field.plot_string('RFtF8KKA')
	#39 e
	field.plot_string('8FF8KAnK')
	#40 l
	field.plot_string('8FRFtKKA')
	#41 l
	field.plot_string('iA')
	#end.
	field.plot_string('C')
	except ExitProgram:
	field.print_field('"Houston, we have a problem." - Jim Lovell'[40])