def test_normal_function(self):
i = [iter(range(100)) for x in range(3)]
e = expandable_chain()
e.extend(i)
assert list(e) == list(range(100))*3
for x in i + [e]:
pytest.raises(StopIteration, x.__next__)
def flatten_restricts(self, v):
i = expandable_chain(v)
depth = 0
conditionals = []
for x in i:
for t, s in ((boolean.OrRestriction, "||"),
(boolean.AndRestriction, "&&")):
if isinstance(x, t):
yield s
yield "("
i.appendleft(")")
i.appendleft(x.restrictions)
depth += 1
break
else:
if isinstance(x, packages.Conditional):
self.assertTrue(x.attr == "use")
conditionals.insert(
depth, list(self.mangle_cond_payload(x.restriction)))
yield set(iflatten_instance(conditionals[:depth + 1]))
yield "("
i.appendleft(")")
i.appendleft(x.payload)
depth += 1
else:
if x == ")":
self.assertTrue(depth)
depth -= 1
yield x
self.assertFalse(depth)
def test_normal_function(self):
i = [iter(range(100)) for x in range(3)]
e = expandable_chain()
e.extend(i)
assert list(e) == list(range(100)) * 3
for x in i + [e]:
pytest.raises(StopIteration, x.__next__)
def test_normal_function(self):
i = [iter(xrange(100)) for x in xrange(3)]
e = expandable_chain()
e.extend(i)
self.assertEqual(list(e), range(100)*3)
for x in i + [e]:
self.assertRaises(StopIteration, x.next)
def flatten_restricts(self, v):
i = expandable_chain(v)
depth = 0
conditionals = []
for x in i:
for t, s in ((boolean.OrRestriction, "||"),
(boolean.AndRestriction, "&&")):
if isinstance(x, t):
yield s
yield "("
i.appendleft(")")
i.appendleft(x.restrictions)
depth += 1
break
else:
if isinstance(x, packages.Conditional):
self.assertTrue(x.attr == "use")
conditionals.insert(
depth, list(self.mangle_cond_payload(x.restriction)))
yield set(iflatten_instance(conditionals[:depth + 1]))
yield "("
i.appendleft(")")
i.appendleft(x.payload)
depth += 1
else:
if x == ")":
self.assertTrue(depth)
depth -= 1
yield x
self.assertFalse(depth)
def find_cond_nodes(restriction_set, yield_non_conditionals=False):
conditions_stack = []
new_set = expandable_chain(restriction_set)
for cur_node in new_set:
if isinstance(cur_node, packages.Conditional):
conditions_stack.append(cur_node.restriction)
new_set.appendleft(list(cur_node.payload) + [None])
elif isinstance(cur_node, transitive_use_atom):
new_set.appendleft(cur_node.convert_to_conditionals())
elif (isinstance(cur_node, boolean.base)
and not isinstance(cur_node, atom)):
new_set.appendleft(cur_node.restrictions)
elif cur_node is None:
conditions_stack.pop()
elif conditions_stack or yield_non_conditionals: # leaf
yield (cur_node, conditions_stack[:])
def find_cond_nodes(restriction_set, yield_non_conditionals=False):
conditions_stack = []
new_set = expandable_chain(restriction_set)
for cur_node in new_set:
if isinstance(cur_node, packages.Conditional):
conditions_stack.append(cur_node.restriction)
new_set.appendleft(list(cur_node.payload) + [None])
elif isinstance(cur_node, transitive_use_atom):
new_set.appendleft(cur_node.convert_to_conditionals())
elif (isinstance(cur_node, boolean.base)
and not isinstance(cur_node, atom)):
new_set.appendleft(cur_node.restrictions)
elif cur_node is None:
conditions_stack.pop()
elif conditions_stack or yield_non_conditionals: # leaf
yield (cur_node, conditions_stack[:])
def use_validate(self, klasses, pkg, seq, reporter, attr=None):
skip_filter = (packages.Conditional,) + klasses
unstated = set()
stated = pkg.iuse_stripped
i = expandable_chain(iflatten_instance(seq, skip_filter))
for node in i:
if isinstance(node, packages.Conditional):
# invert it; get only whats not in pkg.iuse
unstated.update(ifilterfalse(stated.__contains__, node.restriction.vals))
i.append(iflatten_instance(node.payload, skip_filter))
continue
yield node
# implicit IUSE flags
unstated.difference_update(self.unstated_iuse)
if unstated:
reporter.add_report(UnstatedIUSE(pkg, attr, unstated))
def native_iflatten_func(l, skip_func):
"""collapse [[1],2] into [1,2]
:param skip_func: a callable that returns True when iflatten_func should
descend no further
:return: this generator yields each item that cannot be flattened (or is
skipped due to a True result from skip_func)
"""
if skip_func(l):
yield l
return
iters = expandable_chain(l)
try:
while True:
x = iters.next()
if hasattr(x, '__iter__') and not skip_func(x):
iters.appendleft(x)
else:
yield x
except StopIteration:
pass
def native_iflatten_func(l, skip_func):
"""collapse [[1],2] into [1,2]
:param skip_func: a callable that returns True when iflatten_func should
descend no further
:return: this generator yields each item that cannot be flattened (or is
skipped due to a True result from skip_func)
"""
if skip_func(l):
yield l
return
iters = expandable_chain(l)
try:
while True:
x = iters.next()
if hasattr(x, '__iter__') and not skip_func(x):
iters.appendleft(x)
else:
yield x
except StopIteration:
pass
def native_iflatten_instance(l, skip_flattening=_str_kls):
"""collapse [[1],2] into [1,2]
:param skip_flattening: list of classes to not descend through
:return: this generator yields each item that cannot be flattened (or is
skipped due to being a instance of ``skip_flattening``)
"""
if isinstance(l, skip_flattening):
yield l
return
iters = expandable_chain(l)
try:
while True:
x = iters.next()
if (hasattr(x, '__iter__')
and not (isinstance(x, skip_flattening) or
(isinstance(x, _str_kls) and len(x) == 1))):
iters.appendleft(x)
else:
yield x
except StopIteration:
pass
def use_validate(self, klasses, pkg, seq, reporter=None, attr=None):
skip_filter = (packages.Conditional, ) + klasses
unstated = set()
stated = pkg.iuse_stripped
i = expandable_chain(iflatten_instance(seq, skip_filter))
for node in i:
if isinstance(node, packages.Conditional):
# invert it; get only whats not in pkg.iuse
unstated.update(
filterfalse(stated.__contains__, node.restriction.vals))
i.append(iflatten_instance(node.payload, skip_filter))
continue
elif attr == 'required_use':
unstated.update(filterfalse(stated.__contains__, node.vals))
yield node
# implicit IUSE flags
if reporter is not None and attr is not None:
unstated.difference_update(self.unstated_iuse)
if unstated:
reporter.add_report(UnstatedIUSE(pkg, attr, sorted(unstated)))
def native_iflatten_instance(l, skip_flattening=_str_kls):
"""collapse [[1],2] into [1,2]
:param skip_flattening: list of classes to not descend through
:return: this generator yields each item that cannot be flattened (or is
skipped due to being a instance of ``skip_flattening``)
"""
if isinstance(l, skip_flattening):
yield l
return
iters = expandable_chain(l)
try:
while True:
x = iters.next()
if (hasattr(x, '__iter__') and not (
isinstance(x, skip_flattening) or (
isinstance(x, _str_kls) and len(x) == 1))):
iters.appendleft(x)
else:
yield x
except StopIteration:
pass
def test_extend(self):
e = expandable_chain()
e.extend(xrange(100) for i in (1, 2))
self.assertEqual(list(e), range(100)*2)
self.assertRaises(StopIteration, e.extend, [[]])
def test_appendleft(self):
e = expandable_chain(range(10, 20))
e.appendleft(range(10))
assert list(e) == list(range(20))
with pytest.raises(StopIteration):
e.appendleft([])
def test_extendleft(self):
e = expandable_chain(range(20, 30))
e.extendleft([range(10, 20), range(10)])
assert list(e) == list(range(30))
with pytest.raises(StopIteration):
e.extendleft([[]])
def test_extend(self):
e = expandable_chain()
e.extend(range(100) for i in (1, 2))
assert list(e) == list(range(100)) * 2
with pytest.raises(StopIteration):
e.extend([[]])
def test_extendleft(self):
e = expandable_chain(range(20, 30))
e.extendleft([range(10, 20), range(10)])
assert list(e) == list(range(30))
with pytest.raises(StopIteration):
e.extendleft([[]])
def parse(cls,
dep_str,
element_class,
operators=None,
attr=None,
element_func=None,
transitive_use_atoms=False,
allow_src_uri_file_renames=False):
"""
:param dep_str: string abiding by DepSet syntax
:param operators: mapping of node -> callable for special operators
in DepSet syntax
:param element_func: if None, element_class is used for generating
elements, else it's used to generate elements.
Mainly useful for when you need to curry a few args for instance
generation, since element_class _must_ be a class
:param element_class: class of generated elements
:param attr: name of the DepSet attribute being parsed
"""
if element_func is None:
element_func = element_class
restrictions = []
if operators is None:
operators = {
"||": boolean.OrRestriction,
"": boolean.AndRestriction
}
raw_conditionals = []
depsets = [restrictions]
node_conds = False
words = iter(dep_str.split())
# we specifically do it this way since expandable_chain has a bit of nasty
# overhead to the tune of 33% slower
if allow_src_uri_file_renames:
words = expandable_chain(words)
k = None
try:
for k in words:
if ")" == k:
# no elements == error. if closures don't map up,
# indexerror would be chucked from trying to pop
# the frame so that is addressed.
if not depsets[-1] or not raw_conditionals:
raise DepsetParseError(dep_str, attr=attr)
elif raw_conditionals[-1] in operators:
if len(depsets[-1]) == 1:
depsets[-2].append(depsets[-1][0])
else:
depsets[-2].append(
operators[raw_conditionals[-1]](*depsets[-1]))
else:
node_conds = True
c = raw_conditionals[-1]
if c[0] == "!":
c = values.ContainmentMatch(c[1:-1], negate=True)
else:
c = values.ContainmentMatch(c[:-1])
depsets[-2].append(
packages.Conditional("use", c, tuple(depsets[-1])))
raw_conditionals.pop()
depsets.pop()
elif "(" == k:
k = ''
# push another frame on
depsets.append([])
raw_conditionals.append(k)
elif k[-1] == '?' or k in operators:
# use conditional or custom op.
# no tokens left == bad dep_str.
k2 = next(words)
if k2 != "(":
raise DepsetParseError(dep_str, k2, attr=attr)
# push another frame on
depsets.append([])
raw_conditionals.append(k)
elif "|" in k:
raise DepsetParseError(dep_str, k, attr=attr)
elif allow_src_uri_file_renames:
try:
k2 = next(words)
except StopIteration:
depsets[-1].append(element_func(k))
else:
if k2 != '->':
depsets[-1].append(element_func(k))
words.appendleft((k2, ))
else:
k3 = next(words)
# file rename
depsets[-1].append(element_func(k, k3))
else:
# node/element
depsets[-1].append(element_func(k))
except IGNORED_EXCEPTIONS:
raise
except DepsetParseError:
# [][-1] for a frame access, which means it was a parse error.
raise
except StopIteration:
if k is None:
raise
raise DepsetParseError(dep_str, k, attr=attr)
except Exception as e:
raise DepsetParseError(dep_str, e, attr=attr) from e
# check if any closures required
if len(depsets) != 1:
raise DepsetParseError(dep_str, attr=attr)
if transitive_use_atoms and not node_conds:
element_class = transitive_use_atom
# we can't rely on iter(self) here since it doesn't
# descend through boolean restricts.
node_conds = cls._has_transitive_use_atoms(restrictions)
return cls(tuple(restrictions), element_class, node_conds)
def parse(cls,
dep_str,
element_class,
operators=None,
element_func=None,
transitive_use_atoms=False,
allow_src_uri_file_renames=False):
"""
:param dep_str: string abiding by DepSet syntax
:param operators: mapping of node -> callable for special operators
in DepSet syntax
:param element_func: if None, element_class is used for generating
elements, else it's used to generate elements.
Mainly useful for when you need to curry a few args for instance
generation, since element_class _must_ be a class
:param element_class: class of generated elements
"""
if not isinstance(element_class, type):
# yes, this blocks non new style classes. touch cookies.
raise ValueError("element_class must be a new style class")
if element_func is None:
element_func = element_class
if cls.parse_depset is not None and not (allow_src_uri_file_renames):
restrictions = None
if operators is None:
has_conditionals, restrictions = cls.parse_depset(
dep_str, element_func, boolean.AndRestriction,
boolean.OrRestriction)
else:
for x in operators:
if x not in ("", "||"):
break
else:
has_conditionals, restrictions = cls.parse_depset(
dep_str, element_func, operators.get(""),
operators.get("||"))
if restrictions is not None:
if not has_conditionals and transitive_use_atoms:
has_conditionals = cls._has_transitive_use_atoms(
restrictions)
return cls(restrictions, element_class, has_conditionals)
restrictions = []
if operators is None:
operators = {
"||": boolean.OrRestriction,
"": boolean.AndRestriction
}
raw_conditionals = []
depsets = [restrictions]
node_conds = False
words = iter(dep_str.split())
# we specifically do it this way since expandable_chain has a bit of nasty
# overhead to the tune of 33% slower
if allow_src_uri_file_renames:
words = expandable_chain(words)
k = None
try:
for k in words:
if ")" == k:
# no elements == error. if closures don't map up,
# indexerror would be chucked from trying to pop
# the frame so that is addressed.
if not depsets[-1] or not raw_conditionals:
raise ParseError(dep_str)
elif raw_conditionals[-1] in operators:
if len(depsets[-1]) == 1:
depsets[-2].append(depsets[-1][0])
elif raw_conditionals[-1] == '' and (
len(raw_conditionals) == 1 or
('' == raw_conditionals[-2])):
# if the frame is an and and the parent is an and, collapse it in.
depsets[-2].extend(depsets[-1])
else:
depsets[-2].append(
operators[raw_conditionals[-1]](*depsets[-1]))
else:
node_conds = True
c = raw_conditionals[-1]
if c[0] == "!":
c = values.ContainmentMatch(c[1:-1], negate=True)
else:
c = values.ContainmentMatch(c[:-1])
depsets[-2].append(
packages.Conditional("use", c, tuple(depsets[-1])))
raw_conditionals.pop()
depsets.pop()
elif "(" == k:
k = ''
# push another frame on
depsets.append([])
raw_conditionals.append(k)
elif k[-1] == '?' or k in operators:
# use conditional or custom op.
# no tokens left == bad dep_str.
k2 = words.next()
if k2 != "(":
raise ParseError(dep_str, k2)
# push another frame on
depsets.append([])
raw_conditionals.append(k)
elif "|" in k:
raise ParseError(dep_str, k)
elif allow_src_uri_file_renames:
try:
k2 = words.next()
except StopIteration:
depsets[-1].append(element_func(k))
else:
if k2 != '->':
depsets[-1].append(element_func(k))
words.appendleft((k2, ))
else:
k3 = words.next()
# file ename.
depsets[-1].append(element_func(k, k3))
else:
# node/element.
depsets[-1].append(element_func(k))
except IGNORED_EXCEPTIONS:
raise
except IndexError:
# [][-1] for a frame access, which means it was a parse error.
raise
except StopIteration:
if k is None:
raise
raise ParseError(dep_str, k)
except Exception as e:
raise_from(ParseError(dep_str, e))
# check if any closures required
if len(depsets) != 1:
raise ParseError(dep_str)
if transitive_use_atoms and not node_conds:
# localize to this scope for speed.
element_class = transitive_use_atom
# we can't rely on iter(self) here since it doesn't
# descend through boolean restricts.
node_conds = cls._has_transitive_use_atoms(restrictions)
return cls(tuple(restrictions), element_class, node_conds)
def parse(cls, dep_str, element_class,
operators=None,
element_func=None, transitive_use_atoms=False,
allow_src_uri_file_renames=False):
"""
:param dep_str: string abiding by DepSet syntax
:param operators: mapping of node -> callable for special operators
in DepSet syntax
:param element_func: if None, element_class is used for generating
elements, else it's used to generate elements.
Mainly useful for when you need to curry a few args for instance
generation, since element_class _must_ be a class
:param element_class: class of generated elements
"""
if not isinstance(element_class, type):
# yes, this blocks non new style classes. touch cookies.
raise ValueError("element_class must be a new style class")
if element_func is None:
element_func = element_class
if cls.parse_depset is not None and not (allow_src_uri_file_renames):
restrictions = None
if operators is None:
has_conditionals, restrictions = cls.parse_depset(dep_str,
element_func, boolean.AndRestriction,
boolean.OrRestriction)
else:
for x in operators:
if x not in ("", "||"):
break
else:
has_conditionals, restrictions = cls.parse_depset(dep_str,
element_func, operators.get(""), operators.get("||"))
if restrictions is not None:
if not has_conditionals and transitive_use_atoms:
has_conditionals = cls._has_transitive_use_atoms(restrictions)
return cls(restrictions, element_class, has_conditionals)
restrictions = []
if operators is None:
operators = {"||":boolean.OrRestriction, "":boolean.AndRestriction}
raw_conditionals = []
depsets = [restrictions]
node_conds = False
words = iter(dep_str.split())
# we specifically do it this way since expandable_chain has a bit of nasty
# overhead to the tune of 33% slower
if allow_src_uri_file_renames:
words = expandable_chain(words)
k = None
try:
for k in words:
if ")" == k:
# no elements == error. if closures don't map up,
# indexerror would be chucked from trying to pop
# the frame so that is addressed.
if not depsets[-1] or not raw_conditionals:
raise ParseError(dep_str)
elif raw_conditionals[-1] in operators:
if len(depsets[-1]) == 1:
depsets[-2].append(depsets[-1][0])
elif raw_conditionals[-1] == '' and (len(raw_conditionals) == 1 or ('' == raw_conditionals[-2])):
# if the frame is an and and the parent is an and, collapse it in.
depsets[-2].extend(depsets[-1])
else:
depsets[-2].append(
operators[raw_conditionals[-1]](*depsets[-1]))
else:
node_conds = True
c = raw_conditionals[-1]
if c[0] == "!":
c = values.ContainmentMatch(c[1:-1], negate=True)
else:
c = values.ContainmentMatch(c[:-1])
depsets[-2].append(
packages.Conditional("use", c, tuple(depsets[-1])))
raw_conditionals.pop()
depsets.pop()
elif "(" == k:
k = ''
# push another frame on
depsets.append([])
raw_conditionals.append(k)
elif k[-1] == '?' or k in operators:
# use conditional or custom op.
# no tokens left == bad dep_str.
k2 = words.next()
if k2 != "(":
raise ParseError(dep_str, k2)
# push another frame on
depsets.append([])
raw_conditionals.append(k)
elif "|" in k:
raise ParseError(dep_str, k)
elif allow_src_uri_file_renames:
try:
k2 = words.next()
except StopIteration:
depsets[-1].append(element_func(k))
else:
if k2 != '->':
depsets[-1].append(element_func(k))
words.appendleft((k2,))
else:
k3 = words.next()
# file ename.
depsets[-1].append(element_func(k, k3))
else:
# node/element.
depsets[-1].append(element_func(k))
except IGNORED_EXCEPTIONS:
raise
except IndexError:
# [][-1] for a frame access, which means it was a parse error.
raise
except StopIteration:
if k is None:
raise
raise ParseError(dep_str, k)
except Exception as e:
raise_from(ParseError(dep_str, e))
# check if any closures required
if len(depsets) != 1:
raise ParseError(dep_str)
if transitive_use_atoms and not node_conds:
# localize to this scope for speed.
element_class = transitive_use_atom
# we can't rely on iter(self) here since it doesn't
# descend through boolean restricts.
node_conds = cls._has_transitive_use_atoms(restrictions)
return cls(tuple(restrictions), element_class, node_conds)
def test_extendleft(self):
e = expandable_chain(xrange(20, 30))
e.extendleft([xrange(10, 20), xrange(10)])
self.assertEqual(list(e), range(30))
self.assertRaises(StopIteration, e.extendleft, [[]])
def test_extend(self):
e = expandable_chain()
e.extend(range(100) for i in (1, 2))
assert list(e) == list(range(100))*2
with pytest.raises(StopIteration):
e.extend([[]])
def test_append(self):
e = expandable_chain()
e.append(xrange(100))
self.assertEqual(list(e), range(100))
self.assertRaises(StopIteration, e.append, [])
def test_appendleft(self):
e = expandable_chain(range(10, 20))
e.appendleft(range(10))
assert list(e) == list(range(20))
with pytest.raises(StopIteration):
e.appendleft([])
def test_appendleft(self):
e = expandable_chain(xrange(10, 20))
e.appendleft(xrange(10))
self.assertEqual(list(e), range(20))
self.assertRaises(StopIteration, e.appendleft, [])