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# coding=utf-8
import operator
import prolog.engine
from server.hints import Hint, HintSequence
hint_type = {
'no_hint': HintSequence('no_hint', 4),
'system_error': Hint('system_error'),
'test_results': Hint('test_results'),
'syntax_error': Hint('syntax_error'),
}
def hint(program, solved_problems):
# Check program for syntax errors.
engine_id, output = prolog.engine.create(code=program)
if engine_id is not None:
prolog.engine.destroy(engine_id)
if 'error' in map(operator.itemgetter(0), output):
errors_msg = '\n'.join(['{}: {}'.format(m_type, m_text) for m_type, m_text in output])
return [{'id': 'syntax_error', 'args': {'messages': errors_msg}}]
return []
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