def test_markAsTree(self):
"""
Grammars containing list patterns are marked as taking
tree-shaped input rather than character streams.
"""
x = t.Rule("foo", t.List(t.Exactly("x")))
g = t.Grammar("TestGrammar", True, [x])
self.assert_("\n tree = True\n" in writePython(g, ""))
def test_listpattern(self):
"""
Test code generation for list patterns.
"""
x = t.List(t.Exactly("x"))
self.assertEqual(
writePython(x, ""),
dd("""
def _G_listpattern_1():
_G_exactly_2, lastError = self.exactly('x')
self.considerError(lastError, None)
return (_G_exactly_2, self.currentError)
_G_listpattern_3, lastError = self.listpattern(_G_listpattern_1)
self.considerError(lastError, None)
_G_listpattern_3
"""))
def test_listpattern(self):
x = t.List(t.Exactly("x"))
self.assertEqual(
writeBytecode(x),
[t.Descend(), t.Match('x'), t.Ascend()])