def make_list_comp(self, get_iter, for_iter):
block = self.make_block(for_iter.to, inclusive=False, raise_=False)
jump_abs = block.pop()
assert jump_abs.opname == 'JUMP_ABSOLUTE', jump_abs.opname
jump_map = {for_iter.i:for_iter.to}
stmnts = self.decompile_block(block, stack_items=[None], jump_map=jump_map).stmnt()
if len(stmnts) > 1:
assign = stmnts.pop(0)
assert len(stmnts) == 1
assert isinstance(assign, _ast.Assign)
list_expr = self.pop_ast_item()
# empty ast.List object
list_ = self.pop_ast_item()
ifs = []
elt = refactor_ifs(stmnts[0], ifs)
assert len(assign.targets) == 1
generators = [_ast.comprehension(target=assign.targets[0], iter=list_expr, ifs=ifs, lineno=get_iter.lineno, col_offset=0)]
if isinstance(list_, _ast.Assign):
comp = _ast.comprehension(target=list_.targets[0], iter=None, ifs=ifs, lineno=get_iter.lineno, col_offset=0)
generators.insert(0, comp)
list_comp = _ast.ListComp(elt=elt, generators=generators, lineno=get_iter.lineno, col_offset=0)
else:
list_expr = self.pop_ast_item()
list_comp = stmnts[0]
generators = list_comp.generators
# empty ast.List object
list_ = self.pop_ast_item()
if not isinstance(list_, _ast.Assign):
comp = _ast.comprehension(target=list_.targets[0], iter=None, ifs=[], lineno=get_iter.lineno, col_offset=0)
generators.insert(0, comp)
generators[0].iter = list_expr
self.push_ast_item(list_comp)
def make_list_comp(self, get_iter, for_iter):
block = self.make_block(for_iter.to, inclusive=False, raise_=False)
jump_abs = block.pop()
assert jump_abs.opname == 'JUMP_ABSOLUTE', jump_abs.opname
jump_map = {for_iter.i:for_iter.to}
stmnts = self.decompile_block(block, stack_items=[None], jump_map=jump_map).stmnt()
if len(stmnts) > 1:
assign = stmnts.pop(0)
assert len(stmnts) == 1
assert isinstance(assign, _ast.Assign)
list_expr = self.ast_stack.pop()
# empty ast.List object
list_ = self.ast_stack.pop()
ifs = []
elt = refactor_ifs(stmnts[0], ifs)
assert len(assign.targets) == 1
generators = [_ast.comprehension(target=assign.targets[0], iter=list_expr, ifs=ifs, lineno=get_iter.lineno, col_offset=0)]
if isinstance(list_, _ast.Assign):
comp = _ast.comprehension(target=list_.targets[0], iter=None, ifs=ifs, lineno=get_iter.lineno, col_offset=0)
generators.insert(0, comp)
list_comp = _ast.ListComp(elt=elt, generators=generators, lineno=get_iter.lineno, col_offset=0)
else:
list_expr = self.ast_stack.pop()
list_comp = stmnts[0]
generators = list_comp.generators
# empty ast.List object
list_ = self.ast_stack.pop()
if not isinstance(list_, _ast.Assign):
comp = _ast.comprehension(target=list_.targets[0], iter=None, ifs=[], lineno=get_iter.lineno, col_offset=0)
generators.insert(0, comp)
generators[0].iter = list_expr
self.ast_stack.append(list_comp)
def comprehension(for_part, in_part, *ifs):
"""Create an _ast.comprehension node, used in _ast.ListComprehension.
Args:
for_part: The part after "for "
in_part: The part after "for [for_part] in "
*ifs: {_ast.Compare}
Returns:
{_ast.comprehension}
"""
for_part = _WrapWithName(for_part, ctx_type=CtxEnum.STORE)
in_part = _WrapWithName(in_part, ctx_type=CtxEnum.LOAD)
return _ast.comprehension(target=for_part, iter=in_part, ifs=list(ifs))
def test_bug_null_in_objspace_type(self):
import ast
code = ast.Expression(
lineno=1,
col_offset=1,
body=ast.ListComp(
lineno=1,
col_offset=1,
elt=ast.Call(lineno=1,
col_offset=1,
func=ast.Name(lineno=1,
col_offset=1,
id='str',
ctx=ast.Load(lineno=1,
col_offset=1)),
args=[
ast.Name(lineno=1,
col_offset=1,
id='x',
ctx=ast.Load(lineno=1, col_offset=1))
],
keywords=[]),
generators=[
ast.comprehension(
lineno=1,
col_offset=1,
target=ast.Name(lineno=1,
col_offset=1,
id='x',
ctx=ast.Store(lineno=1, col_offset=1)),
iter=ast.List(
lineno=1,
col_offset=1,
elts=[ast.Num(lineno=1, col_offset=1, n=23)],
ctx=ast.Load(
lineno=1,
col_offset=1,
)),
ifs=[])
]))
compile(code, '<template>', 'eval')
def test_bug_null_in_objspace_type(self):
import ast
code = ast.Expression(lineno=1, col_offset=1, body=ast.ListComp(lineno=1, col_offset=1, elt=ast.Call(lineno=1, col_offset=1, func=ast.Name(lineno=1, col_offset=1, id='str', ctx=ast.Load(lineno=1, col_offset=1)), args=[ast.Name(lineno=1, col_offset=1, id='x', ctx=ast.Load(lineno=1, col_offset=1))], keywords=[]), generators=[ast.comprehension(lineno=1, col_offset=1, target=ast.Name(lineno=1, col_offset=1, id='x', ctx=ast.Store(lineno=1, col_offset=1)), iter=ast.List(lineno=1, col_offset=1, elts=[ast.Num(lineno=1, col_offset=1, n=23)], ctx=ast.Load(lineno=1, col_offset=1, )), ifs=[])]))
compile(code, '<template>', 'eval')