def test_terminal(self):
e0 = P.terminal("a")
t0 = "abc"
n0 = e0(t0)
self.assertEqual(n0.node_type, P.ParseNodeType.terminal)
self.assertTrue(n0.is_value)
self.assertEqual(n0.value, "a")
self.assertEqual(n0.position, -len(t0))
self.assertEqual(len(n0.children), 1)
self.assertEqual(n0.children[0], "a")
t1 = "bcd"
with self.assertRaises(P.DeadEnd):
e0(t1)
def op_add(self, text):
"""op_add = "+" ;"""
self._attempting(text)
return terminal("+")(text).retyped(TokenType.op_add)
def op_mult(self, text):
"""op_mult = "*" ;"""
self._attempting(text)
return terminal("*")(text).retyped(TokenType.op_mult)
