def test_shouldParseCorrectTypesForThreeLoops(self):
parsed = cyk(self.g, [2, 0, 0, 0, 1])
self.assertIsInstance(parsed, S)
self.assertIsInstance(parsed.to_rule, SAB)
self.assertIsInstance(parsed.to_rule.to_symbols[0], A)
self.assertIsInstance(parsed.to_rule.to_symbols[1], B)
a1 = parsed.to_rule.to_symbols[0]
b = parsed.to_rule.to_symbols[1]
self.assertIsInstance(b.to_rule, B1)
self.assertIsInstance(b.to_rule.to_symbols[0], Terminal)
self.assertIsInstance(a1.to_rule, AAC)
self.assertIsInstance(a1.to_rule.to_symbols[0], A)
self.assertIsInstance(a1.to_rule.to_symbols[1], C)
a2 = a1.to_rule.to_symbols[0]
c1 = a1.to_rule.to_symbols[1]
self.assertIsInstance(c1.to_rule, C0)
self.assertIsInstance(c1.to_rule.to_symbols[0], Terminal)
self.assertIsInstance(a2.to_rule, AAC)
self.assertIsInstance(a2.to_rule.to_symbols[0], A)
self.assertIsInstance(a2.to_rule.to_symbols[1], C)
a3 = a2.to_rule.to_symbols[0]
c2 = a2.to_rule.to_symbols[1]
self.assertIsInstance(c2.to_rule, C0)
self.assertIsInstance(c2.to_rule.to_symbols[0], Terminal)
self.assertIsInstance(a3.to_rule, AAC)
self.assertIsInstance(a3.to_rule.to_symbols[0], A)
self.assertIsInstance(a3.to_rule.to_symbols[1], C)
a4 = a3.to_rule.to_symbols[0]
c3 = a3.to_rule.to_symbols[1]
self.assertIsInstance(c3.to_rule, C0)
self.assertIsInstance(c3.to_rule.to_symbols[0], Terminal)
self.assertIsInstance(a4.to_rule, A2)
self.assertIsInstance(a4.to_rule.to_symbols[0], Terminal)
def test_twoTerminals(self):
result = cyk(self.g, [My(1), My(2)])
terms = filter(lambda x: isinstance(x, Terminal),
Traversing.postOrder(result))
terms = list(terms)
self.assertEqual(terms[0].s.prop, 1)
self.assertEqual(terms[1].s.prop, 2)
def testRealTraversingReturnValues(self):
g = Grammar(terminals=[0],
nonterminals=[A],
rules=[Rules],
start_symbol=A)
res = cyk(g, [0])
def travRule(item, callback):
self.assertIsInstance(item, Rules)
resp = [callback(ch) for ch in item.to_symbols]
return functools.reduce(operator.add, resp, [item])
def travNonterminals(item, callback):
self.assertIsInstance(item, A)
return [item] + callback(item.to_rule)
def travTerms(item, callback):
self.assertIsInstance(item, Terminal)
return [item]
resp = Traversing.traverseSeparated(res, travRule, travNonterminals,
travTerms)
self.assertIsInstance(resp[0], A)
self.assertIsInstance(resp[1], Rules)
self.assertIsInstance(resp[2], Terminal)
self.assertEqual(resp[2].s, 0)
def test_repeatOfC(self):
g = Grammar(terminals=[0, 1, 2, 3],
nonterminals=[S, A, B, C, D],
rules=[
RuleSA, RuleSB, RuleAC, RuleA0A, RuleBD, RuleB2B,
RuleB3S, RuleC1C, RuleC0, RuleD3D, RuleD2
],
start_symbol=S)
gr = ContextFree.transform_to_chomsky_normal_form(
ContextFree.remove_unit_rules(g))
pars = cyk(gr, [1, 1, 0])
s = InverseContextFree.unit_rules_restore(
InverseContextFree.transform_from_chomsky_normal_form(pars))
self.assertIsInstance(s, S)
self.assertIsInstance(s.to_rule, RuleSA)
a = s.to_rule.to_symbols[0]
self.assertIsInstance(a, A)
self.assertIsInstance(a.to_rule, RuleAC)
c = a.to_rule.to_symbols[0]
self.assertIsInstance(c, C)
self.assertIsInstance(c.to_rule, RuleC1C)
self.assertIsInstance(c.to_rule.to_symbols[0], Terminal)
self.assertEqual(c.to_rule.to_symbols[0].s, 1)
c = c.to_rule.to_symbols[1]
self.assertIsInstance(c, C)
self.assertIsInstance(c.to_rule, RuleC1C)
self.assertIsInstance(c.to_rule.to_symbols[0], Terminal)
self.assertEqual(c.to_rule.to_symbols[0].s, 1)
c = c.to_rule.to_symbols[1]
self.assertIsInstance(c, C)
self.assertIsInstance(c.to_rule, RuleC0)
self.assertIsInstance(c.to_rule.to_symbols[0], Terminal)
self.assertEqual(c.to_rule.to_symbols[0].s, 0)
def test_simpleTestOverUnitRule(self):
g = Grammar(terminals=[0, 1],
nonterminals=[S, A, B, C, D],
rules=[RuleS1AB, RuleB0, RuleACD, RuleCD, RuleDEps],
start_symbol=S)
gr = ContextFree.transform_to_chomsky_normal_form(ContextFree.remove_unit_rules(ContextFree.remove_rules_with_epsilon(g)))
pars = cyk(gr, [1, 0])
s = InverseContextFree.epsilon_rules_restore(InverseContextFree.unit_rules_restore(InverseContextFree.transform_from_chomsky_normal_form(pars)))
self.assertIsInstance(s, S)
self.assertIsInstance(s.to_rule, RuleS1AB)
self.assertIsInstance(s.to_rule.to_symbols[0], Terminal)
self.assertEqual(s.to_rule.to_symbols[0].s, 1)
b = s.to_rule.to_symbols[2]
self.assertIsInstance(b, B)
self.assertIsInstance(b.to_rule, RuleB0)
self.assertIsInstance(b.to_rule.to_symbols[0], Terminal)
self.assertEqual(b.to_rule.to_symbols[0].s, 0)
a = s.to_rule.to_symbols[1]
self.assertIsInstance(a, A)
self.assertIsInstance(a.to_rule, RuleACD)
d = a.to_rule.to_symbols[1]
self.assertIsInstance(d, D)
self.assertIsInstance(d.to_rule, RuleDEps)
self.assertIs(d.to_rule.to_symbols[0].s, EPS)
c = a.to_rule.to_symbols[0]
self.assertIsInstance(c, C)
self.assertIsInstance(c.to_rule, RuleCD)
d = c.to_rule.to_symbols[0]
self.assertIsInstance(d, D)
self.assertIsInstance(d.to_rule, RuleDEps)
self.assertIs(d.to_rule.to_symbols[0].s, EPS)
def test_transform(self):
g = Grammar(terminals=[0, 1, 2],
nonterminals=[S, A, B, C],
rules=[RuleSABC, RuleA0, RuleB1, RuleC2],
start_symbol=S)
com = ContextFree.transform_to_chomsky_normal_form(g)
pars = cyk(com, [0, 1, 2])
trans = InverseContextFree.transform_from_chomsky_normal_form(pars)
self.assertIsInstance(trans, S)
self.assertIsInstance(trans.to_rule, RuleSABC)
a = trans.to_rule.to_symbols[0]
b = trans.to_rule.to_symbols[1]
c = trans.to_rule.to_symbols[2]
self.assertIsInstance(a, A)
self.assertIsInstance(a.to_rule, RuleA0)
self.assertIsInstance(a.to_rule.to_symbols[0], Terminal)
self.assertEqual(a.to_rule.to_symbols[0].s, 0)
self.assertIsInstance(b, B)
self.assertIsInstance(b.to_rule, RuleB1)
self.assertIsInstance(b.to_rule.to_symbols[0], Terminal)
self.assertEqual(b.to_rule.to_symbols[0].s, 1)
self.assertIsInstance(c, C)
self.assertIsInstance(c.to_rule, RuleC2)
self.assertIsInstance(c.to_rule.to_symbols[0], Terminal)
self.assertEqual(c.to_rule.to_symbols[0].s, 2)
def test_parseWithThreeIterations(self):
g = Grammar(terminals=[0, 1],
nonterminals=[S, A, B],
rules=[Rules, AtoAB],
start_symbol=S)
res = cyk(g, [0, 1, 1, 1, 1])
res = InverseCommon.splitted_rules(res)
self.assertIsInstance(res, S)
self.assertIsInstance(res.to_rule, Rules)
a = res.to_rule.to_symbols[0]
b = res.to_rule.to_symbols[1]
self.assertIsInstance(a, A)
self.assertIsInstance(b, B)
self.assertIsInstance(a.to_rule, AtoAB)
self.assertIsInstance(b.to_rule, Rules)
b = a.to_rule.to_symbols[1]
a = a.to_rule.to_symbols[0]
self.assertIsInstance(a, A)
self.assertIsInstance(b, B)
self.assertIsInstance(a.to_rule, AtoAB)
self.assertIsInstance(b.to_rule, Rules)
b = a.to_rule.to_symbols[1]
a = a.to_rule.to_symbols[0]
self.assertIsInstance(a, A)
self.assertIsInstance(b, B)
self.assertIsInstance(a.to_rule, AtoAB)
self.assertIsInstance(b.to_rule, Rules)
b = a.to_rule.to_symbols[1]
a = a.to_rule.to_symbols[0]
self.assertIsInstance(a, A)
self.assertIsInstance(b, B)
self.assertIsInstance(a.to_rule, Rules)
self.assertIsInstance(b.to_rule, Rules)
def test_shouldParseCorrectSymbolsOneLoop(self):
parsed = cyk(self.g, [2, 0, 1])
a = parsed.to_rule.to_symbols[0]
b = parsed.to_rule.to_symbols[1]
c = a.to_rule.to_symbols[1]
a = a.to_rule.to_symbols[0]
self.assertEqual(a.to_rule.to_symbols[0].s, 2)
self.assertEqual(b.to_rule.to_symbols[0].s, 1)
self.assertEqual(c.to_rule.to_symbols[0].s, 0)
def test_shouldParseCorrectSymbols(self):
parsed = cyk(self.g, [0, 1, 2])
a = parsed.to_rule.to_symbols[0]
b = parsed.to_rule.to_symbols[1]
c = b.to_rule.to_symbols[0]
d = b.to_rule.to_symbols[1]
self.assertEqual(a.to_rule.to_symbols[0].s, 0)
self.assertEqual(c.to_rule.to_symbols[0].s, 1)
self.assertEqual(d.to_rule.to_symbols[0].s, 2)
def test_rewriteSimple1(self):
g = Grammar(terminals=[0, 1],
nonterminals=[S],
rules=[Rules],
start_symbol=S)
res = cyk(g, [1])
res = InverseCommon.splitted_rules(res)
self.assertIsInstance(res, S)
self.assertIsInstance(res.to_rule, Rules)
def test_fiveTerminals(self):
result = cyk(self.g, [My(1), My(2), My(3), My(4), My(5)])
terms = filter(lambda x: isinstance(x, Terminal),
Traversing.postOrder(result))
terms = list(terms)
self.assertEqual(terms[0].s.prop, 1)
self.assertEqual(terms[1].s.prop, 2)
self.assertEqual(terms[2].s.prop, 3)
self.assertEqual(terms[3].s.prop, 4)
self.assertEqual(terms[4].s.prop, 5)
def testAIn(self):
g = Grammar(terminals=[0],
nonterminals=[A],
rules=[Rules],
start_symbol=A)
res = cyk(g, [0])
def trav(item, callback):
self.assertTrue(isinstance(item, A))
Traversing.traverse(res, trav)
def testTraversePostOrder(self):
g = Grammar(terminals=[0],
nonterminals=[A],
rules=[Rules],
start_symbol=A)
res = cyk(g, [0])
resp = Traversing.postOrder(res)
self.assertIsInstance(resp[2], A)
self.assertIsInstance(resp[1], Rules)
self.assertIsInstance(resp[0], Terminal)
self.assertEqual(resp[0].s, 0)
def test_shouldParseCorrectTypes(self):
parsed = cyk(self.g, [0, 1])
self.assertIsInstance(parsed, S)
self.assertIsInstance(parsed.to_rule, SAB)
self.assertIsInstance(parsed.to_rule.to_symbols[0], A)
self.assertIsInstance(parsed.to_rule.to_symbols[1], B)
self.assertIsInstance(parsed.to_rule.to_symbols[0].to_rule, A0)
self.assertIsInstance(parsed.to_rule.to_symbols[1].to_rule, B1)
self.assertIsInstance(
parsed.to_rule.to_symbols[0].to_rule.to_symbols[0], Terminal)
self.assertIsInstance(
parsed.to_rule.to_symbols[1].to_rule.to_symbols[0], Terminal)
def test_shouldParseCorrectTypesForNoLoop(self):
parsed = cyk(self.g, [2, 1])
self.assertIsInstance(parsed, S)
self.assertIsInstance(parsed.to_rule, SAB)
self.assertIsInstance(parsed.to_rule.to_symbols[0], A)
self.assertIsInstance(parsed.to_rule.to_symbols[1], B)
a = parsed.to_rule.to_symbols[0]
b = parsed.to_rule.to_symbols[1]
self.assertIsInstance(a.to_rule, A2)
self.assertIsInstance(a.to_rule.to_symbols[0], Terminal)
self.assertIsInstance(b.to_rule, B1)
self.assertIsInstance(b.to_rule.to_symbols[0], Terminal)
def test_transform(self):
g = Grammar(
terminals=[0, 1, 2, 3],
nonterminals=[S, A, B, C],
rules=[RuleS, RuleA, RuleB, RuleS0, RuleA1, RuleB2, RuleC3],
start_symbol=S)
gr = ContextFree.transform_to_chomsky_normal_form(g)
pars = cyk(gr, [1, 3, 1, 2, 3, 1, 3])
trans = InverseContextFree.transform_from_chomsky_normal_form(pars)
self.assertIsInstance(trans, S)
self.assertIsInstance(trans.to_rule, RuleS)
a = trans.to_rule.to_symbols[0]
self.assertIsInstance(a, A)
self.assertIsInstance(a.to_rule, RuleA1)
self.assertIsInstance(a.to_rule.to_symbols[0], Terminal)
self.assertEqual(a.to_rule.to_symbols[0].s, 1)
b = trans.to_rule.to_symbols[1]
self.assertIsInstance(b, B)
self.assertIsInstance(b.to_rule, RuleB)
c = b.to_rule.to_symbols[0]
self.assertIsInstance(c, C)
self.assertIsInstance(c.to_rule, RuleC3)
self.assertIsInstance(c.to_rule.to_symbols[0], Terminal)
self.assertEqual(c.to_rule.to_symbols[0].s, 3)
s = b.to_rule.to_symbols[1]
self.assertIsInstance(s, S)
self.assertIsInstance(s.to_rule, RuleS)
self.assertIsInstance(s.to_rule.to_symbols[0], A)
self.assertIsInstance(s.to_rule.to_symbols[0].to_rule, RuleA1)
self.assertIsInstance(s.to_rule.to_symbols[0].to_rule.to_symbols[0],
Terminal)
self.assertEqual(s.to_rule.to_symbols[0].to_rule.to_symbols[0].s, 1)
self.assertIsInstance(s.to_rule.to_symbols[1], B)
self.assertIsInstance(s.to_rule.to_symbols[1].to_rule, RuleB2)
self.assertIsInstance(s.to_rule.to_symbols[1].to_rule.to_symbols[0],
Terminal)
self.assertEqual(s.to_rule.to_symbols[1].to_rule.to_symbols[0].s, 2)
self.assertIsInstance(s.to_rule.to_symbols[2], C)
self.assertIsInstance(s.to_rule.to_symbols[2].to_rule, RuleC3)
self.assertIsInstance(s.to_rule.to_symbols[2].to_rule.to_symbols[0],
Terminal)
self.assertEqual(s.to_rule.to_symbols[2].to_rule.to_symbols[0].s, 3)
self.assertIsInstance(b.to_rule.to_symbols[2], A)
self.assertIsInstance(b.to_rule.to_symbols[2].to_rule, RuleA1)
self.assertIsInstance(b.to_rule.to_symbols[2].to_rule.to_symbols[0],
Terminal)
self.assertEqual(b.to_rule.to_symbols[2].to_rule.to_symbols[0].s, 1)
self.assertIsInstance(pars.to_rule.to_symbols[2], C)
self.assertIsInstance(pars.to_rule.to_symbols[2].to_rule, RuleC3)
self.assertIsInstance(pars.to_rule.to_symbols[2].to_rule.to_symbols[0],
Terminal)
self.assertEqual(pars.to_rule.to_symbols[2].to_rule.to_symbols[0].s, 3)
def test_transform(self):
g = Grammar(terminals=[0, 1],
nonterminals=[S],
rules=[Rules],
start_symbol=S)
tr = ContextFree.transform_to_chomsky_normal_form(g)
pars = cyk(tr, [0, 1])
rest = InverseContextFree.transform_from_chomsky_normal_form(pars)
self.assertIsInstance(rest, S)
self.assertIsInstance(rest.to_rule, Rules)
self.assertIsInstance(rest.to_rule.to_symbols[0], Terminal)
self.assertIsInstance(rest.to_rule.to_symbols[1], Terminal)
self.assertEqual(rest.to_rule.to_symbols[0].s, 0)
self.assertEqual(rest.to_rule.to_symbols[1].s, 1)
def test_shouldParseCorrectSymbolsThreeLoops(self):
parsed = cyk(self.g, [2, 0, 0, 0, 1])
a1 = parsed.to_rule.to_symbols[0]
b = parsed.to_rule.to_symbols[1]
a2 = a1.to_rule.to_symbols[0]
c1 = a1.to_rule.to_symbols[1]
a3 = a2.to_rule.to_symbols[0]
c2 = a2.to_rule.to_symbols[1]
a4 = a3.to_rule.to_symbols[0]
c3 = a3.to_rule.to_symbols[1]
self.assertEqual(a4.to_rule.to_symbols[0].s, 2)
self.assertEqual(c3.to_rule.to_symbols[0].s, 0)
self.assertEqual(c2.to_rule.to_symbols[0].s, 0)
self.assertEqual(c1.to_rule.to_symbols[0].s, 0)
self.assertEqual(b.to_rule.to_symbols[0].s, 1)
def generate(expr, iterations=8, fill=None):
ContextFree.remove_useless_symbols(grammar, transform_grammar=True)
ContextFree.remove_rules_with_epsilon(grammar, transform_grammar=True)
ContextFree.remove_unit_rules(grammar, transform_grammar=True)
ContextFree.remove_useless_symbols(grammar, transform_grammar=True)
ContextFree.transform_to_chomsky_normal_form(grammar,
transform_grammar=True)
parsed = cyk(grammar, expr)
parsed = InverseContextFree.transform_from_chomsky_normal_form(parsed)
parsed = InverseContextFree.unit_rules_restore(parsed)
parsed = InverseContextFree.epsilon_rules_restore(parsed)
return parsed.get(iterations, fill)
def test_shouldParseAndUseValues(self):
parsed = cyk(self.g, [My(1), My(2)])
parsed = InverseContextFree.transform_from_chomsky_normal_form(parsed)
parsed = InverseContextFree.unit_rules_restore(parsed)
parsed = InverseContextFree.epsilon_rules_restore(parsed)
self.assertIsInstance(parsed, S)
self.assertIsInstance(parsed.to_rule, R)
left = parsed.to_rule.to_symbols[0]
right = parsed.to_rule.to_symbols[1]
self.assertIsInstance(left, Terminal)
self.assertIsInstance(left.s, My)
self.assertEqual(left.s.prop, 1)
self.assertIsInstance(right, Terminal)
self.assertIsInstance(right.s, My)
self.assertEqual(right.s.prop, 2)
def testTraversingOwnTypes(self):
g = Grammar(terminals=[0],
nonterminals=[A],
rules=[Rules],
start_symbol=A)
res = cyk(g, [0])
def travRule(item, callback):
self.assertIsInstance(item, Rules)
def travNonterminals(item, callback):
self.assertIsInstance(item, A)
def travTerms(item, callback):
self.assertIsInstance(item, Terminal)
Traversing.traverseSeparated(res, travRule, travNonterminals,
travTerms)
def test_shouldParseCorrectTypes(self):
parsed = cyk(self.g, [0, 1, 2])
self.assertIsInstance(parsed, S)
self.assertIsInstance(parsed.to_rule, SAB)
self.assertIsInstance(parsed.to_rule.to_symbols[0], A)
self.assertIsInstance(parsed.to_rule.to_symbols[1], B)
a = parsed.to_rule.to_symbols[0]
b = parsed.to_rule.to_symbols[1]
self.assertIsInstance(a.to_rule, A0)
self.assertIsInstance(a.to_rule.to_symbols[0], Terminal)
self.assertIsInstance(b.to_rule, BCD)
self.assertIsInstance(b.to_rule.to_symbols[0], C)
self.assertIsInstance(b.to_rule.to_symbols[1], D)
c = b.to_rule.to_symbols[0]
d = b.to_rule.to_symbols[1]
self.assertIsInstance(c.to_rule, C1)
self.assertIsInstance(c.to_rule.to_symbols[0], Terminal)
self.assertIsInstance(d.to_rule, D2)
self.assertIsInstance(d.to_rule.to_symbols[0], Terminal)
def test_simpleTestOverUnitRule(self):
g = Grammar(
terminals=[0, 1, 2, 3],
nonterminals=[S, A, B, C],
rules=[RuleS0A, RuleAB, RuleAEps, RuleBEps, RuleB1C, RuleC11],
start_symbol=S)
gr = ContextFree.transform_to_chomsky_normal_form(
ContextFree.remove_unit_rules(
ContextFree.remove_rules_with_epsilon(g)))
pars = cyk(gr, [0])
s = InverseContextFree.epsilon_rules_restore(
InverseContextFree.unit_rules_restore(
InverseContextFree.transform_from_chomsky_normal_form(pars)))
self.assertIsInstance(s, S)
self.assertIsInstance(s.to_rule, RuleS0A)
self.assertIsInstance(s.to_rule.to_symbols[0], Terminal)
self.assertEqual(s.to_rule.to_symbols[0].s, 0)
a = s.to_rule.to_symbols[1]
self.assertIsInstance(a, A)
self.assertIsInstance(a.to_rule, RuleAEps)
self.assertIs(a.to_rule.to_symbols[0].s, EPS)
def testRealTraversing(self):
g = Grammar(terminals=[0],
nonterminals=[A],
rules=[Rules],
start_symbol=A)
res = cyk(g, [0])
def travRule(item, callback):
self.assertIsInstance(item, Rules)
return [item] + [callback(ch) for ch in item.to_symbols]
def travNonterminals(item, callback):
self.assertIsInstance(item, A)
return [item, callback(item.to_rule)]
def travTerms(item, callback):
self.assertIsInstance(item, Terminal)
return [item]
Traversing.traverseSeparated(res, travRule, travNonterminals,
travTerms)
def test_directTo2(self):
g = Grammar(terminals=[0, 1, 2, 3],
nonterminals=[S, A, B, C, D],
rules=[
RuleSA, RuleSB, RuleAC, RuleA0A, RuleA1S, RuleBD,
RuleB2B, RuleB3S, RuleC1C, RuleC0, RuleD3D, RuleD2
],
start_symbol=S)
gr = ContextFree.transform_to_chomsky_normal_form(
ContextFree.remove_unit_rules(g))
pars = cyk(gr, [2])
s = InverseContextFree.unit_rules_restore(
InverseContextFree.transform_from_chomsky_normal_form(pars))
self.assertIsInstance(s, S)
self.assertIsInstance(s.to_rule, RuleSB)
b = s.to_rule.to_symbols[0]
self.assertIsInstance(b, B)
self.assertIsInstance(b.to_rule, RuleBD)
d = b.to_rule.to_symbols[0]
self.assertIsInstance(d, D)
self.assertIsInstance(d.to_rule, RuleD2)
self.assertIsInstance(d.to_rule.to_symbols[0], Terminal)
self.assertEqual(d.to_rule.to_symbols[0].s, 2)
def test_shouldParseCorrectSymbols(self):
parsed = cyk(self.g, [0])
self.assertEqual(parsed.to_rule.to_symbols[0].s, 0)
def test_shouldParseCorrectTypes(self):
parsed = cyk(self.g, [0])
self.assertIsInstance(parsed, S)
self.assertIsInstance(parsed.to_rule, R)
self.assertIsInstance(parsed.to_rule.to_symbols[0], Terminal)
def test_shouldParse(self):
parsed = cyk(self.g, [0])
def test_shouldParseClass(self):
parsed = cyk(self.g, [My, My])
def test_shouldParseInstances(self):
parsed = cyk(self.g, [My(1), My(2)])
