def _dnf(where):
"""
Constructs DNF of where tree consisting of terms in form:
(alias, attribute, value, negation)
meaning `alias.attribute = value`
or `not alias.attribute = value` if negation is False
Any conditions other then eq are dropped.
"""
if isinstance(where, Lookup):
# If where.lhs don't refer to a field then don't bother
if not hasattr(where.lhs, 'target'):
return SOME_TREE
# Don't bother with complex right hand side either
if isinstance(where.rhs, (QuerySet, Query)):
return SOME_TREE
# Skip conditions on non-serialized fields
if isinstance(where.lhs.target, NOT_SERIALIZED_FIELDS):
return SOME_TREE
# 1.10: django.db.models.fields.related_lookups.RelatedExact
attname = where.lhs.target.attname
if isinstance(where, Exact):
return [[(where.lhs.alias, attname, where.rhs, True)]]
elif isinstance(where, IsNull):
return [[(where.lhs.alias, attname, None, where.rhs)]]
elif isinstance(where, In) and len(where.rhs) < LONG_DISJUNCTION:
return [[(where.lhs.alias, attname, v, True)]
for v in where.rhs]
else:
return SOME_TREE
elif isinstance(where, EverythingNode):
return [[]]
elif isinstance(where, NothingNode):
return []
elif isinstance(where, (ExtraWhere, SubqueryConstraint)):
return SOME_TREE
elif len(where) == 0:
return [[]]
else:
chilren_dnfs = map(_dnf, where.children)
if len(chilren_dnfs) == 0:
return [[]]
elif len(chilren_dnfs) == 1:
result = chilren_dnfs[0]
else:
# Just unite children joined with OR
if where.connector == OR:
result = cat(chilren_dnfs)
# Use Cartesian product to AND children
else:
result = map(cat, product(*chilren_dnfs))
# Negating and expanding brackets
if where.negated:
result = [map(negate, p) for p in product(*result)]
return result
def _dnf(where):
"""
Constructs DNF of where tree consisting of terms in form:
(alias, attribute, value, negation)
meaning `alias.attribute = value`
or `not alias.attribute = value` if negation is False
Any conditions other then eq are dropped.
"""
if isinstance(where, Lookup):
# If where.lhs don't refer to a field then don't bother
if not hasattr(where.lhs, 'target'):
return SOME_TREE
# Don't bother with complex right hand side either
if isinstance(where.rhs, (QuerySet, Query, SQLEvaluator)):
return SOME_TREE
# Skip conditions on non-serialized fields
if isinstance(where.lhs.target, NOT_SERIALIZED_FIELDS):
return SOME_TREE
attname = where.lhs.target.attname
if isinstance(where, Exact):
return [[(where.lhs.alias, attname, where.rhs, True)]]
elif isinstance(where, IsNull):
return [[(where.lhs.alias, attname, None, where.rhs)]]
elif isinstance(where, In) and len(where.rhs) < LONG_DISJUNCTION:
return [[(where.lhs.alias, attname, v, True)] for v in where.rhs]
else:
return SOME_TREE
elif isinstance(where, EverythingNode):
return [[]]
elif isinstance(where, NothingNode):
return []
elif isinstance(where, (ExtraWhere, SubqueryConstraint)):
return SOME_TREE
elif len(where) == 0:
return [[]]
else:
chilren_dnfs = map(_dnf, where.children)
if len(chilren_dnfs) == 0:
return [[]]
elif len(chilren_dnfs) == 1:
result = chilren_dnfs[0]
else:
# Just unite children joined with OR
if where.connector == OR:
result = cat(chilren_dnfs)
# Use Cartesian product to AND children
else:
result = map(cat, product(*chilren_dnfs))
# Negating and expanding brackets
if where.negated:
result = [map(negate, p) for p in product(*result)]
return result
def _dnf(where):
"""
Constructs DNF of where tree consisting of terms in form:
(alias, attribute, value, negation)
meaning `alias.attribute = value`
or `not alias.attribute = value` if negation is False
Any conditions other then eq are dropped.
"""
if isinstance(where, tuple):
constraint, lookup, annotation, value = where
attname = attname_of(model, constraint.col)
if isinstance(value, (QuerySet, Query, SQLEvaluator)):
return [[SOME_COND]]
elif lookup == 'exact':
if isinstance(constraint.field, NOT_SERIALIZED_FIELDS):
return [[SOME_COND]]
else:
return [[(constraint.alias, attname, value, True)]]
elif lookup == 'isnull':
return [[(constraint.alias, attname, None, value)]]
elif lookup == 'in' and len(value) < LONG_DISJUNCTION:
return [[(constraint.alias, attname, v, True)] for v in value]
else:
return [[SOME_COND]]
elif isinstance(where, EverythingNode):
return [[]]
elif isinstance(where, NothingNode):
return []
elif isinstance(where, (ExtraWhere, SubqueryConstraint)):
return [[SOME_COND]]
elif len(where) == 0:
return [[]]
else:
chilren_dnfs = map(_dnf, where.children)
if len(chilren_dnfs) == 0:
return [[]]
elif len(chilren_dnfs) == 1:
result = chilren_dnfs[0]
else:
# Just unite children joined with OR
if where.connector == OR:
result = cat(chilren_dnfs)
# Use Cartesian product to AND children
else:
result = map(cat, product(*chilren_dnfs))
# Negating and expanding brackets
if where.negated:
result = [map(negate, p) for p in product(*result)]
return result
def _dnf(where):
"""
Constructs DNF of where tree consisting of terms in form:
(alias, attribute, value, negation)
meaning `alias.attribute = value`
or `not alias.attribute = value` if negation is False
Any conditions other then eq are dropped.
"""
if isinstance(where, tuple):
constraint, lookup, annotation, value = where
attname = attname_of(model, constraint.col)
if isinstance(value, (QuerySet, Query, SQLEvaluator)):
return [[SOME_COND]]
elif lookup == 'exact':
if isinstance(constraint.field, NON_SERIALIZABLE_FIELDS):
return [[SOME_COND]]
else:
return [[(constraint.alias, attname, value, True)]]
elif lookup == 'isnull':
return [[(constraint.alias, attname, None, value)]]
elif lookup == 'in' and len(value) < LONG_DISJUNCTION:
return [[(constraint.alias, attname, v, True)] for v in value]
else:
return [[SOME_COND]]
elif isinstance(where, EverythingNode):
return [[]]
elif isinstance(where, NothingNode):
return []
elif isinstance(where, (ExtraWhere, SubqueryConstraint)):
return [[SOME_COND]]
elif len(where) == 0:
return [[]]
else:
chilren_dnfs = map(_dnf, where.children)
if len(chilren_dnfs) == 0:
return [[]]
elif len(chilren_dnfs) == 1:
result = chilren_dnfs[0]
else:
# Just unite children joined with OR
if where.connector == OR:
result = cat(chilren_dnfs)
# Use Cartesian product to AND children
else:
result = map(cat, product(*chilren_dnfs))
# Negating and expanding brackets
if where.negated:
result = [map(negate, p) for p in product(*result)]
return result
def _parse_urlconf(files, urlconf):
# Old patterns() call, TODO: drop them
patterns = [n for n in ast.walk(urlconf.tree) if is_call(n, 'patterns')]
if patterns:
return cat(_parse_patterns(files, p) for p in patterns)
# NOTE that we don't support mixing patterns() and new style in single file
refs = [n.args[1].s for n in ast.walk(urlconf.tree) if is_call(n, 'url') and
len(n.args) >= 2 and isinstance(n.args[1], ast.Str)]
included = [n.args[0].s for n in ast.walk(urlconf.tree) if is_call(n, 'include') and
len(n.args) >= 1 and isinstance(n.args[0], ast.Str)]
for mod in included:
if mod in files:
refs.append('%s.urlpatterns' % mod)
refs.extend(_parse_urlconf(files, files[mod]))
return refs
def _parse_urlconf(files, urlconf):
# Old patterns() call, TODO: drop them
patterns = [n for n in ast.walk(urlconf.tree) if is_call(n, 'patterns')]
if patterns:
return cat(_parse_patterns(files, p) for p in patterns)
# NOTE that we don't support mixing patterns() and new style in single file
refs = [
n.args[1].s for n in ast.walk(urlconf.tree) if is_call(n, 'url')
and len(n.args) >= 2 and isinstance(n.args[1], ast.Str)
]
included = [
n.args[0].s for n in ast.walk(urlconf.tree) if is_call(n, 'include')
and len(n.args) >= 1 and isinstance(n.args[0], ast.Str)
]
for mod in included:
if mod in files:
refs.append('%s.urlpatterns' % mod)
refs.extend(_parse_urlconf(files, files[mod]))
return refs
def _dnf(where):
"""
Constructs DNF of where tree consisting of terms in form:
(alias, attribute, value, negation)
meaning `alias.attribute = value`
or `not alias.attribute = value` if negation is False
Any conditions other then eq are dropped.
"""
# Lookups appeared in Django 1.7
if isinstance(where, Lookup):
# If where.lhs don't refer to a field then don't bother
if not hasattr(where.lhs, 'target'):
return SOME_TREE
# Don't bother with complex right hand side either
if isinstance(where.rhs, (QuerySet, Query, SQLEvaluator)):
return SOME_TREE
# Skip conditions on non-serialized fields
if isinstance(where.lhs.target, NOT_SERIALIZED_FIELDS):
return SOME_TREE
attname = where.lhs.target.attname
if isinstance(where, Exact):
return [[(where.lhs.alias, attname, where.rhs, True)]]
elif isinstance(where, IsNull):
return [[(where.lhs.alias, attname, None, where.rhs)]]
elif isinstance(where, In) and len(where.rhs) < LONG_DISJUNCTION:
return [[(where.lhs.alias, attname, v, True)] for v in where.rhs]
else:
return SOME_TREE
# Django 1.6 and earlier used tuples to encode conditions
elif isinstance(where, tuple):
constraint, lookup, annotation, value = where
# Don't bother with complex right hand side
if isinstance(value, (QuerySet, Query, SQLEvaluator)):
return SOME_TREE
# Skip conditions on non-serialized fields
if isinstance(constraint.field, NOT_SERIALIZED_FIELDS):
return SOME_TREE
attname = attname_of(model, constraint.col)
if lookup == 'isnull':
return [[(constraint.alias, attname, None, value)]]
elif lookup == 'exact':
return [[(constraint.alias, attname, value, True)]]
elif lookup == 'in' and len(value) < LONG_DISJUNCTION:
return [[(constraint.alias, attname, v, True)] for v in value]
else:
return SOME_TREE
elif isinstance(where, EverythingNode):
return [[]]
elif isinstance(where, NothingNode):
return []
elif isinstance(where, (ExtraWhere, SubqueryConstraint)):
return SOME_TREE
elif len(where) == 0:
return [[]]
else:
chilren_dnfs = map(_dnf, where.children)
if len(chilren_dnfs) == 0:
return [[]]
elif len(chilren_dnfs) == 1:
result = chilren_dnfs[0]
else:
# Just unite children joined with OR
if where.connector == OR:
result = cat(chilren_dnfs)
# Use Cartesian product to AND children
else:
result = map(cat, product(*chilren_dnfs))
# Negating and expanding brackets
if where.negated:
result = [map(negate, p) for p in product(*result)]
return result
def test_full_py2():
assert sorted(funcy.__all__) == sorted(cat(m.__all__ for m in modules))
def test_full_py2():
assert sorted(funcy.__all__) == sorted(cat(m.__all__ for m in modules))
def _dnf(where):
"""
Constructs DNF of where tree consisting of terms in form:
(alias, attribute, value, negation)
meaning `alias.attribute = value`
or `not alias.attribute = value` if negation is False
Any conditions other then eq are dropped.
"""
# Lookups appeared in Django 1.7
if isinstance(where, Lookup):
# If where.lhs don't refer to a field then don't bother
if not hasattr(where.lhs, 'target'):
return [[SOME_COND]]
# TODO: check if all of this are possible
if isinstance(where.rhs, (QuerySet, Query, SQLEvaluator)):
return [[SOME_COND]]
attname = where.lhs.target.attname
if isinstance(where, Exact):
if isinstance(where.lhs.target, NOT_SERIALIZED_FIELDS):
return [[SOME_COND]]
else:
return [[(where.lhs.alias, attname, where.rhs, True)]]
elif isinstance(where, IsNull):
return [[(where.lhs.alias, attname, None, where.rhs)]]
elif isinstance(where, In) and len(where.rhs) < LONG_DISJUNCTION:
return [[(where.lhs.alias, attname, v, True)] for v in where.rhs]
else:
return [[SOME_COND]]
# Django 1.6 and earlier used tuples to encode conditions
elif isinstance(where, tuple):
constraint, lookup, annotation, value = where
attname = attname_of(model, constraint.col)
if isinstance(value, (QuerySet, Query, SQLEvaluator)):
return [[SOME_COND]]
elif lookup == 'exact':
# TODO: check for non-serialized for both exact and in
if isinstance(constraint.field, NOT_SERIALIZED_FIELDS):
return [[SOME_COND]]
else:
return [[(constraint.alias, attname, value, True)]]
elif lookup == 'isnull':
return [[(constraint.alias, attname, None, value)]]
elif lookup == 'in' and len(value) < LONG_DISJUNCTION:
return [[(constraint.alias, attname, v, True)] for v in value]
else:
return [[SOME_COND]]
elif isinstance(where, EverythingNode):
return [[]]
elif isinstance(where, NothingNode):
return []
elif isinstance(where, (ExtraWhere, SubqueryConstraint)):
return [[SOME_COND]]
elif len(where) == 0:
return [[]]
else:
chilren_dnfs = map(_dnf, where.children)
if len(chilren_dnfs) == 0:
return [[]]
elif len(chilren_dnfs) == 1:
result = chilren_dnfs[0]
else:
# Just unite children joined with OR
if where.connector == OR:
result = cat(chilren_dnfs)
# Use Cartesian product to AND children
else:
result = map(cat, product(*chilren_dnfs))
# Negating and expanding brackets
if where.negated:
result = [map(negate, p) for p in product(*result)]
return result
