def test_parse(self):
ex = Expression()
self.assertEqual(ex.parse("a"), (["sequence" ,["literal", ["button", "a"]]], ""))
self.assertEqual(ex.parse("ab"), (["sequence" ,["literal", ["button", "a"]],
["sequence", ["literal", ["button", "b"]]]], ""))
self.assertEqual(ex.parse("a*b"), (["sequence" ,["literal", ["button", "a"]],
["sequence", ["literal", ["wild", "*"]],
["sequence", ["literal", ["button", "b"]]]]], ""))
self.assertEqual(ex.parse("<Enter>a"), (["sequence" ,["literal", ["button", "<Enter>"]],
["sequence", ["literal", ["button", "a"]]]], ""))
def load_expressions(self, sceme="default", flush=False):
if flush:
self.expressions = []
Expression.set_wildchar(self.config["processor"]["input_end_key"])
for handler_header, expressions in self.config["expressions"][sceme].items():
handler_name, handler_args = self.config.split_header(handler_header)
Handler = HandlerFactory(handler_name, handler_args)
for pattern, command in expressions.items():
self.expressions.append((Expression(pattern), Handler(command)))
# for resetting purposes
self.reset_expression = Expression("*", self.config["processor"]["reset_key"])
def test_function(self):
ex = Expression()
btn = ex.button(25)
k = KeyEvent(InputEvent(0,0,0,25,1))
k1 = KeyEvent(InputEvent(0,0,0,26,1))
k2 = KeyEvent(InputEvent(0,0,0,25,0))
self.assertEqual(btn([k]), (ex.state_accept, [], []))
self.assertEqual(btn([k,k1]), (ex.state_accept, [k1], []))
self.assertEqual(btn([k1,k]), (ex.state_reject, [k1,k], []))
self.assertEqual(btn([k2,k]), (ex.state_accept, [], []))
btn1 = ex.button(26)
seq = ex.sequence(btn, btn1)
self.assertEqual(seq([k]), (ex.state_partial, [], []))
self.assertEqual(seq([k,k1]), (ex.state_accept, [], []))
self.assertEqual(seq([k,k2]), (ex.state_partial, [], []))
self.assertEqual(seq([k,k1,k2]), (ex.state_accept, [k2], []))
self.assertEqual(seq([k,k2,k1]), (ex.state_accept, [], []))
wild = ex.sequence(ex.wild(28))
k3 = KeyEvent(InputEvent(0,0,0,28,1))
self.assertEqual(wild([k,k1,k2,k3]), (ex.state_accept, [], [[k,k1]]))
self.assertEqual(wild([k1,k3,k2,k]), (ex.state_accept, [k2,k], [[k1]]))
self.assertEqual(wild([k1,k2]), (ex.state_partial, [], []))
seq1 = ex.sequence(seq, wild)
seq2 = ex.sequence(wild, seq1)
self.assertEqual(seq1([k,k1,k2,k3]), (ex.state_accept, [], [[]]))
self.assertEqual(seq2([k,k1,k3,k,k1,k2,k3]), (ex.state_accept, [], [[k,k1], []]))
def test_compile(self):
ex = Expression()
btn_a = ex.button(30)
btn_b = ex.button(48)
btn_enter = ex.button(28)
btn_wild = ex.wild(28)
key = lambda code, state: KeyEvent(InputEvent(0, 0, 0, code, state))
keys = [key(code,state) for code in [28,30,46,48] for state in [0,1,2]]
keysets = [list(i) for i in permutations(keys, 3)]
matches = {
"a": btn_a,
"<Enter>": btn_enter,
"ab": ex.sequence(btn_a, btn_b),
"a*b": ex.sequence(btn_a, ex.sequence(btn_wild, btn_b))
}
for line, expected in matches.items():
result_expected = map(expected, keysets)
result_actual = map(ex.compile(ex.parse(line)[0]), keysets)
data = [(e, a, keysets[i], ex.parse(line))\
for i, (a, e) in enumerate(zip(result_actual, result_expected))\
if a[0] != e[0] or a[2] != e[2]
]
self.assertEquals(data, [])
