def assign_plus(self, a, b, c):
if is_number(b) or a == c:
b, c = c, b
# a := b + number
if is_number(c):
a, b = self.alloregs(a, b)
if a != b:
self.cmd('COPY a b', a=a, b=b)
if c <= 5: # small number addition
for c in xrange(c):
self.cmd('INC a', a=a)
else:
c = self.num(c, 9)
self.cmd('ADD a c', a=a, c=c)
return
a, b, c = self.alloregs(a, b, c)
if a != b:
self.cmd('COPY a b', a=a, b=b)
if b == c:
# a := b + b
self.cmd('SHL a', a=a)
else:
# a := b + c
self.cmd('ADD a c', a=a, c=c)
def if_gt(self, a, b, block_jump):
if is_number(a) and is_number(b):
if a > b:
self.cmd('JUMP blockjump', blockjump=block_jump)
return
if a == b:
# a > a always false
return
if is_number(a):
_, b = self.alloregs(b, b)
a = self.num(a, 8)
elif is_number(b):
_, a = self.alloregs(a, a)
self.cmd('COPY 8 a', a=a)
b = self.num(b, 9)
else:
_, a, b = self.alloregs(a, a, b)
self.cmd('COPY 8 a', a=a)
self.cmd('''
SUB 8 b
JZERO 8 $END
JUMP blockjump
''', b=b, blockjump=block_jump)
def if_leq(self, a, b, block_jump):
if is_number(a) and is_number(b):
if a <= b:
self.cmd('JUMP blockjump', blockjump=block_jump)
return
if a == b:
# a <= a always true
self.cmd('JUMP blockjump', blockjump=block_jump)
return
if is_number(a):
_, b = self.alloregs(b, b)
a = self.num(a, 8)
elif is_number(b):
_, a = self.alloregs(a, a)
if b == 0:
self.cmd('JZERO a blockjump', a=a, blockjump=block_jump)
return
self.cmd('COPY 8 a', a=a)
b = self.num(b, 9)
else:
_, a, b = self.alloregs(a, a, b)
self.cmd('COPY 8 a', a=a)
self.cmd('''
SUB 8 b
JZERO 8 blockjump
''', b=b, blockjump=block_jump)
def if_geq(self, a, b, block_jump):
if is_number(a) and is_number(b):
if a >= b:
self.cmd('JUMP blockjump', blockjump=block_jump)
return
if a == b:
# a >= a always true
self.cmd('JUMP blockjump', blockjump=block_jump)
return
if is_number(a):
_, b = self.alloregs(b, b)
self.cmd('COPY 9 b', b=b)
a = self.num(a, 8)
elif is_number(b):
_, a = self.alloregs(a, a)
b = self.num(b, 9)
else:
_, a, b = self.alloregs(a, a, b)
self.cmd('COPY 9 b', b=b)
self.cmd('''
SUB 9 a
JZERO 9 blockjump
''', a=a, blockjump=block_jump)
def if_neq(self, a, b, block_jump):
if is_number(a) and is_number(b) and a == b:
return
if a == b:
# a != a always false
return
if is_number(a):
a, b = b, a
if is_number(b):
_, a = self.alloregs(a, a)
if b == 0:
self.cmd('''
JZERO a $END
JUMP blockjump
''', a=a, blockjump=block_jump)
return
b = self.num(b, 9)
self.cmd('COPY 8 a', a=a)
else:
_, a, b = self.alloregs(a, a, b)
self.cmd('COPY 8 a', a=a)
self.cmd('COPY 9 b', b=b)
self.cmd('''
SUB 8 b
JZERO 8 $CHECK
JUMP blockjump
$CHECK SUB 9 a
JZERO 9 $END
JUMP blockjump
''', a=a, b=b, blockjump=block_jump)
def assign_times(self, a, b, c):
if is_number(b):
b, c = c, b
if is_number(c): # todo << and *1 multiplication
a, b = self.alloregs(a, b)
c = self.num(c, 9)
self.cmd('COPY 8 b', b=b)
else:
a, b, c = self.alloregs(a, b, c)
self.cmd('COPY 9 c', c=c)
self.cmd('COPY 8 b', b=b)
self.mul(8, 9, a)
def assign_divide(self, a, b, c):
if is_number(b):
a, c = self.alloregs(a, c)
self.num(b, 6)
self.cmd('COPY 7 c', c=c)
elif is_number(c):
a, b = self.alloregs(a, b)
self.num(c, 7)
self.cmd('COPY 6 b', b=b)
else:
a, b, c = self.alloregs(a, b, c)
self.cmd('COPY 6 b', b=b)
self.cmd('COPY 7 c', c=c)
self.div(6, 7, 8, a, 9)
def assign_modulo(self, a, b, c):
if is_number(b):
a, c = self.alloregs(a, c)
self.cmd('COPY 6 c', c=c)
b = self.num(b, a)
elif is_number(c):
a, b = self.alloregs(a, b)
if a != c:
self.cmd('COPY a b', a=a, b=b)
c = self.num(c, 6)
else:
a, b, c = self.alloregs(a, b, c)
self.cmd('COPY 6 c', c=c)
self.cmd('COPY a b', a=a, b=b)
self.div(a, 6, 7, 8, 9)
def gen_put(self, cmd):
_, a = cmd
if is_number(a):
a = self.num(a, 9)
else:
_, a = self.alloregs(a, a)
self.cmd('WRITE a', a=a)
def assign_minus(self, a, b, c):
# a := b - number
if is_number(c):
a, b = self.alloregs(a, b)
if a != b:
self.cmd('COPY a b', a=a, b=b)
if c <= 5: # small number subtraction
for c in xrange(c):
self.cmd('DEC a', a=a)
else:
c = self.num(c, 9)
self.cmd('SUB a c', a=a, c=c)
return
# a := number - c
if is_number(b):
a, c = self.alloregs(a, c)
if a == c:
self.cmd('COPY 9 c', c=c)
c = 9
b = self.num(b, a)
self.cmd('SUB b c', b=b, c=c)
return
a, b, c = self.alloregs(a, b, c)
if b == c:
# a := b - b
self.cmd('RESET a', a=a)
return
if a == c:
# a := b - a
self.cmd('COPY 9 c', c=c)
c = 9
if a != b:
self.cmd('COPY a b', a=a, b=b)
self.cmd('SUB a c', a=a, c=c)
