def setUp(self): # called for each test - test fixture
all_ops = [
operator('+', 0, (lambda y, x: x + y)),
operator('-', 0, (lambda y, x: x - y)),
operator('*', 1, (lambda y, x: x * y)),
operator('/', 1, (lambda y, x: x / y)),
operator('^', 2, (lambda y, x: pow(x, y)), pos='right'),
]
all_funcs = [
function('pluss', (lambda y, x, z: x + y + z)),
function('pi', (lambda: Decimal(3.14))),
]
self.subj = reverse_polish_notation(all_ops, all_funcs)
self.cases = [
['0-((-8/(-2))+123)-111', '0 0 8 - 0 2 - / 123 + - 111 -', -238],
['1-(999-(-888-(-777-(-666-(-555-(-123456789+(0-(0-'
+ '(-8/-2)+123)-111)-0)-0)+999)/1)*1)+333)',
'1 999 0 888 - 0 777 - 0 666 - 0 555 - 0 123456789 - 0 0 0 8'
+ ' - 0 2 - / - 123 + - 111 - + 0 - - 0 - - 999 + 1 / - 1 *'
+ ' - - 333 + -', -123457573],
['-(-(-(-(-(-(-(-(-(-8/-2)))))))))',
'0 0 0 0 0 0 0 0 0 0 8 - 0 2 - / - - - - - - - - -', -4],
['-1', '0 1 -', -1]
]
def setUp(self): # called for each test - test fixture
self.add = operator('+', 0, (lambda y, x: x + y))
self.sub = operator('-', 0, (lambda y, x: x - y))
self.mul = operator('*', 1, (lambda y, x: x * y))
self.div = operator('/', 1, (lambda y, x: x / y))
self.powr = operator('^', 2, (lambda y, x: pow(x, y)), pos='right')
self.pluss = function('pluss', (lambda y, x, z: x + y + z))
self.pi = function('pi', (lambda: 3.14))
if i in self.ops.keys(): # if token is an operator
res = self.ops[i](stack.pop(), stack.pop())
stack.append(res)
elif i in self.fun.keys(): # if token is a function
res = self.fun[i](stack)
stack.append(res)
else:
stack.append(i)
return stack[0]
if __name__ == '__main__': # pragma: no cover
all_ops = [
operator('+', 0, (lambda y, x: x + y)),
operator('-', 0, (lambda y, x: x - y)),
operator('*', 1, (lambda y, x: x * y)),
operator('/', 1, (lambda y, x: x / y)),
operator('^', 2, (lambda y, x: pow(x, y)), pos='right'),
]
all_funcs = [
function('pluss', (lambda y, x, z: x + y + z)),
function('pi', (lambda: Decimal(3.14))),
]
pol_nat = reverse_polish_notation(all_ops, all_funcs)
e = 'pi() * pluss(9, 1, 1) ^ 2 * 9 + 4 / (1 * 2)'
r = pol_nat.get_rev_pol(pol_nat.parse_ex(e))
