def make_value():
return verify.Term(verify.BOOLEAN, value)
class AssessmentParser13(object):
"""Grammar and parser for the assessment."""
string = (QuotedString('\'', escChar='\\', multiline=True)
^ QuotedString('"', escChar='\\', multiline=True))
boolean = (Literal('true').setParseAction(make_bool(True))
^ Literal('false').setParseAction(make_bool(False)))
float = Combine(Word(nums) +
Optional(Literal('.') +
Word(nums))).setParseAction(make_float)
choice_decl = (string ^ Combine(sep('correct(') + string + sep(')')).
setParseAction(lambda x: verify.Term(verify.CORRECT, x[0])))
regex = (Regex('/(.*)/i') ^ Combine(
sep('regex(') + QuotedString('"', escChar='\\') +
sep(')')).setParseAction(lambda x: verify.Term(verify.REGEX, x[0])))
question_decl = (sep('{') + Each(
Optional(key('questionHTML') + sep(':') + string +
Optional(sep(','))) +
Optional(key('lesson') + sep(':') + string + Optional(sep(','))) +
Optional(
key('correctAnswerString') + sep(':') + string +
Optional(sep(','))) + Optional(
key('correctAnswerRegex') + sep(':') + regex +
Optional(sep(','))) + Optional(
key('correctAnswerNumeric') + sep(':') + float +
Optional(sep(','))) +
Optional(key('multiLine') + sep(':') + boolean + Optional(sep(','))) +
Optional(
key('choices') + sep(':') + sep('[') +
Group(list_of(choice_decl)).setParseAction(make_list) + sep(']') +
Optional(sep(',')))) + sep('}')).setParseAction(make_dict)
assessment_grammar = (sep('assessment') + sep('=') + sep('{') + Each(
Optional(
key('assessmentName') + sep(':') + string + Optional(sep(','))) +
Optional(key('preamble') + sep(':') + string + Optional(sep(','))) +
Optional(
key('checkAnswers') + sep(':') + boolean + Optional(sep(','))) +
Optional(
key('questionsList') + sep(':') + sep('[') +
Group(list_of(question_decl)).setParseAction(make_list) +
sep(']') + Optional(sep(',')))) + sep('}') +
Optional(sep(';'))).setParseAction(make_dict)
@classmethod
def parse_string(cls, content):
return cls.assessment_grammar.parseString(content)
@classmethod
def parse_string_in_scope(cls, content, scope, root_name):
"""Parses assessment text following grammar."""
if 'assessment' != root_name:
raise Exception('Unsupported schema: %s', root_name)
# we need to extract the results as a dictionary; so we remove the
# outer array holding it
ast = cls.parse_string(content).asList()
if len(ast) == 1:
ast = ast[0]
return dict(scope.items() + {'__builtins__': {}}.items() +
{root_name: ast}.items())
class ActivityParser13(object):
"""Grammar and parser for the activity."""
variable = Word(alphas)
integer = Word(nums).setParseAction(make_int)
string = (QuotedString('\'', escChar='\\', multiline=True)
^ QuotedString('"', escChar='\\', multiline=True))
boolean = (Literal('true').setParseAction(make_bool(True))
^ Literal('false').setParseAction(make_bool(False)))
regex = (Regex('/(.*)/i') ^ Combine(
sep('regex(') + QuotedString('"', escChar='\\') +
sep(')')).setParseAction(lambda x: verify.Term(verify.REGEX, x[0])))
choice_decl = Group(
sep('[') + string + sep(',') + boolean + sep(',') + string + sep(']'))
choices_decl = Group(sep('[') + Optional(list_of(choice_decl)) +
sep(']')).setParseAction(make_list)
multiple_choice_decl = (key('questionType') + sep(':') +
key('multiple choice') + Optional(sep(',')))
multiple_choice = (sep('{') + multiple_choice_decl + Each(
Optional(key('questionHTML') + sep(':') + string +
Optional(sep(','))) +
Optional(
key('choices') + sep(':') + choices_decl + Optional(sep(',')))) +
sep('}')).setParseAction(make_dict)
free_text_decl = (key('questionType') + sep(':') + key('freetext') +
Optional(sep(',')))
free_text = (sep('{') + free_text_decl + Each(
Optional(key('questionHTML') + sep(':') + string +
Optional(sep(','))) + Optional(
key('correctAnswerRegex') + sep(':') + regex +
Optional(sep(','))) + Optional(
key('correctAnswerOutput') + sep(':') + string +
Optional(sep(','))) + Optional(
key('incorrectAnswerOutput') + sep(':') + string +
Optional(sep(','))) +
Optional(
key('showAnswerPrompt') + sep(':') + string + Optional(sep(','))) +
Optional(
key('showAnswerOutput') + sep(':') + string + Optional(sep(','))) +
Optional(key('outputHeight') + sep(':') + string + Optional(sep(','))))
+ sep('}')).setParseAction(make_dict)
question_list_decl = (sep('{') + Each(
Optional(key('questionHTML') + sep(':') + string + Optional(sep(',')))
+ Optional(
key('choices') + sep(':') + sep('[') +
Group(list_of(string)).setParseAction(make_list) + sep(']') +
Optional(sep(','))) + Optional(
key('correctIndex') + sep(':') +
(integer ^ (sep('[') + Group(list_of(integer)).setParseAction(
make_list) + sep(']'))) + Optional(sep(','))) +
Optional(key('multiSelect') + sep(':') + boolean +
Optional(sep(','))), ) + sep('}')).setParseAction(make_dict)
questions_list_decl = Group(
sep('[') + Optional(list_of(question_list_decl)) +
sep(']')).setParseAction(make_list)
multiple_choice_group_decl = (key('questionType') + sep(':') +
key('multiple choice group') +
Optional(sep(',')))
multiple_choice_group = (sep('{') + multiple_choice_group_decl + Each(
Optional(
key('questionGroupHTML') + sep(':') + string +
Optional(sep(','))) + Optional(
key('allCorrectMinCount') + sep(':') + integer +
Optional(sep(','))) + Optional(
key('allCorrectOutput') + sep(':') + string +
Optional(sep(','))) + Optional(
key('someIncorrectOutput') + sep(':') + string +
Optional(sep(','))) + Optional(
key('questionsList') + sep(':') +
questions_list_decl + Optional(sep(',')))) +
sep('}')).setParseAction(make_dict)
activity_grammar = (sep('activity') + sep('=') + sep('[') + Optional(
list_of(string ^ multiple_choice ^ free_text ^ multiple_choice_group))
+ sep(']') + Optional(sep(';')))
@classmethod
def parse_string(cls, content):
return cls.activity_grammar.parseString(content)
@classmethod
def parse_string_in_scope(cls, content, scope, root_name):
"""Parses activity text following grammar."""
if 'activity' != root_name:
raise Exception('Unsupported schema: %s', root_name)
return dict(scope.items() + {'__builtins__': {}}.items() +
{root_name: cls.parse_string(content).asList()}.items())