diff options
Diffstat (limited to 'prolog/problems')
| -rw-r--r-- | prolog/problems/family_relations/brother_2/common.py | 8 | ||||
| -rw-r--r-- | prolog/problems/family_relations/grandparent_2/common.py | 18 | ||||
| -rw-r--r-- | prolog/problems/family_relations/sister_2/common.py | 8 |
3 files changed, 17 insertions, 17 deletions
diff --git a/prolog/problems/family_relations/brother_2/common.py b/prolog/problems/family_relations/brother_2/common.py index 87f27a3..8046b32 100644 --- a/prolog/problems/family_relations/brother_2/common.py +++ b/prolog/problems/family_relations/brother_2/common.py @@ -65,6 +65,10 @@ def hint(code, aux_code): try: engine_id, output = prolog.engine.create(code=code+aux_code, timeout=1.0) + # use of \= or =\= instead of \== + if prolog.util.Token('NEQU', '\=') in tokens or prolog.util.Token('NEQA', '=\=') in tokens: + return [{'id': 'neq+_instead_of_neq'}] + # target predicate seems to always be false if not prolog.engine.ask_truth(engine_id, 'brother(_, _)'): return [{'id': 'predicate_always_false'}] @@ -83,10 +87,6 @@ def hint(code, aux_code): prolog.engine.ask_one(engine_id, 'brother(_, Y), female(Y)') == 'false': return [{'id': 'y_can_be_of_any_gender'}] - # use of \= or =\= instead of \== - if prolog.util.Token('NEQU', '\=') in tokens or prolog.util.Token('NEQA', '=\=') in tokens: - return [{'id': 'neq+_instead_of_neq'}] - # X and Y must be different if prolog.util.Token('NEQ', '\==') not in tokens and prolog.engine.ask_truth(engine_id, 'setof(X, (member(X, [william, alessandro, andrew]), brother(X, X)), L), length(L, 3)'): diff --git a/prolog/problems/family_relations/grandparent_2/common.py b/prolog/problems/family_relations/grandparent_2/common.py index 431071e..1cfdfe8 100644 --- a/prolog/problems/family_relations/grandparent_2/common.py +++ b/prolog/problems/family_relations/grandparent_2/common.py @@ -71,6 +71,15 @@ def hint(code, aux_code): # TODO: generic hint for: # TODO: parent(X, Z1), parent(Z2, Y), Z1 = Z2 + # gender testing is redundant + # this is not necessarily wrong, but worth mentioning anyway + targets = [prolog.util.Token('NAME', 'male'), prolog.util.Token('NAME', 'female'), + prolog.util.Token('NAME', 'mother'), prolog.util.Token('NAME', 'father')] + marks = [(t.pos, t.pos + len(t.val)) for t in tokens if t in targets] + if marks: + return [{'id': 'gender_is_irrelevant_markup', 'start': m[0], 'end': m[1]} for m in marks] + \ + [{'id': 'gender_is_irrelevant'}] + # target predicate seems to always be false if not prolog.engine.ask_truth(engine_id, 'grandparent(_, _)'): return [{'id': 'predicate_always_false'}] @@ -82,15 +91,6 @@ def hint(code, aux_code): 'findall(_, grandparent(X, Y), L), length(L, 1024)'): return [{'id': 'no_common_z'}] - # gender testing is redundant - # this is not necessarily wrong, but worth mentioning anyway - targets = [prolog.util.Token('NAME', 'male'), prolog.util.Token('NAME', 'female'), - prolog.util.Token('NAME', 'mother'), prolog.util.Token('NAME', 'father')] - marks = [(t.pos, t.pos + len(t.val)) for t in tokens if t in targets] - if marks: - return [{'id': 'gender_is_irrelevant_markup', 'start': m[0], 'end': m[1]} for m in marks] + \ - [{'id': 'gender_is_irrelevant'}] - # OR (;) instead of AND (,) # this hint has to be before the next two # as otherwise those two would always override it diff --git a/prolog/problems/family_relations/sister_2/common.py b/prolog/problems/family_relations/sister_2/common.py index 2be3ab3..8493007 100644 --- a/prolog/problems/family_relations/sister_2/common.py +++ b/prolog/problems/family_relations/sister_2/common.py @@ -91,6 +91,10 @@ def hint(code, aux_code): try: engine_id, output = prolog.engine.create(code=code+aux_code, timeout=1.0) + # use of \= or =\= instead of \== + if prolog.util.Token('NEQU', '\=') in tokens or prolog.util.Token('NEQA', '=\=') in tokens: + return [{'id': 'neq+_instead_of_neq'}] + # target predicate seems to always be false if not prolog.engine.ask_truth(engine_id, 'sister(_, _)'): return [{'id': 'predicate_always_false'}] @@ -112,10 +116,6 @@ def hint(code, aux_code): prolog.engine.ask_one(engine_id, 'sister(_, Y), male(Y)') == 'false': return [{'id': 'y_can_be_of_any_gender'}] - # use of \= or =\= instead of \== - if prolog.util.Token('NEQU', '\=') in tokens or prolog.util.Token('NEQA', '=\=') in tokens: - return [{'id': 'neq+_instead_of_neq'}] - # X and Y must be different # this is the last code-specific hint (when everything else doesn't trigger anymore) if prolog.util.Token('NEQ', '\==') not in tokens and prolog.engine.ask_truth(engine_id, |