def get_tokens(s):
tokens = list()
lex = Lexer.lexer(s, g=OmniGrammar())
for t in lex:
# print(f'yields: {t}')
tokens.append(t)
return tokens
def test_send(self):
s = "One Two Three"
tokens = Lexer.lexer(s)
for t in tokens:
if t == "Two":
tokens.send(t) # return the Token to the generator
break
self.assertEqual("Two", next(tokens))
def get_tokens(s):
tokens = list()
g = PVLGrammar()
g.comments = (('/*', '*/'), ('#', '\n'))
lex = Lexer.lexer(s, g=g)
for t in lex:
# print(f'yields: {t}')
tokens.append(t)
return tokens
def get_tokens(s):
tokens = list()
g = PVLGrammar()
g.comments = (("/*", "*/"), ("#", "\n"))
lex = Lexer.lexer(s, g=g)
for t in lex:
# print(f'yields: {t}')
tokens.append(t)
return tokens
def test_lexer_recurse(self):
def foo(tokens):
two = list()
for t in tokens:
if t == "f":
break
two.append(t)
return two
lex = Lexer.lexer("a b c d e f g h")
one = list()
for t in lex:
if t == "c":
two = foo(lex)
else:
one.append(t)
self.assertEqual(["a", "b", "g", "h"], one)
self.assertEqual(["d", "e"], two)
def test_lexer_recurse(self):
def foo(tokens):
two = list()
for t in tokens:
if t == 'f':
break
two.append(t)
return two
lex = Lexer.lexer('a b c d e f g h')
one = list()
for t in lex:
if t == 'c':
two = foo(lex)
else:
one.append(t)
self.assertEqual(['a', 'b', 'g', 'h'], one)
self.assertEqual(['d', 'e'], two)
