def parse_simple_match(self):
token, value = self.get_token()
if token == 'str' or token == 'id' or token == 'number' or \
token == 'const':
next_token, next_value = self.get_token()
if next_token == 'prompt' and token == 'str':
final_token, final_value = self.get_token('regexp')
return qa_helpers.regexp(final_value, value, next_value)
if next_token == 'regexp' and token == 'str':
return qa_helpers.regexp(next_value, value)
if next_token == 'equal':
return qa_helpers.qmap(self.parse_simple_match(), value)
if next_token == 'hyphen' and token == 'number':
final_token, final_value = self.get_token()
if final_token == 'number':
return slice(value, final_value)
self.push_token()
return slice(value, None)
self.push_token()
return value
if token == 'prompt':
next_token, next_value = self.get_token('regexp')
return qa_helpers.regexp(next_value, prompt=value)
if token == 'lparen':
ans = self.parse_match()
self.get_token('rparen')
return ans
if token == 'regexp':
return qa_helpers.regexp(value)
if token == 'hyphen':
next_token, next_value = self.get_token('number')
return slice(None, next_value)
self.SyntaxError("expected match, got %s" % token)
def ask_yn(question, review=None):
r'''
>>> from StringIO import StringIO
>>> sys.stdin = StringIO('yes\n')
>>> ask_yn(u'got it?')
______________________________________________________________________________
got it? (y/n) True
>>> sys.stdin = StringIO('N\n')
>>> ask_yn(u'got it?')
______________________________________________________________________________
got it? (y/n) False
'''
return get_answer(question, u"(y/n)", conv_fn=lambda str: str.lower(),
test=(qa_helpers.qmap(yes_match, True),
qa_helpers.qmap(no_match, False)),
review=review)
def parse_simple_match(self):
token, value = self.get_token()
if token == 'str' or token == 'id' or token == 'number' or \
token == 'const':
next_token, next_value = self.get_token()
if next_token == 'prompt' and token == 'str':
final_token, final_value = self.get_token('regexp')
return qa_helpers.regexp(final_value, value, next_value)
if next_token == 'regexp' and token == 'str':
return qa_helpers.regexp(next_value, value)
if next_token == 'equal':
return qa_helpers.qmap(self.parse_simple_match(), value)
if next_token == 'hyphen' and token == 'number':
final_token, final_value = self.get_token()
if final_token == 'number':
return slice(value, final_value)
self.push_token()
return slice(value, None)
self.push_token()
return value
if token == 'prompt':
next_token, next_value = self.get_token('regexp')
return qa_helpers.regexp(next_value, prompt=value)
if token == 'lparen':
ans = self.parse_match()
self.get_token('rparen')
return ans
if token == 'regexp':
return qa_helpers.regexp(value)
if token == 'hyphen':
next_token, next_value = self.get_token('number')
return slice(None, next_value)
self.SyntaxError("expected match, got %s" % token)