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Start to handle 3.5+ BUILD_LIST_UNPACK in call ..

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to implement multple star arguments
This commit is contained in:
rocky
2018-02-09 03:41:13 -05:00
parent f7999d2754
commit bb45be2dc7
3 changed files with 28 additions and 10 deletions
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BIN
test/bytecode_3.5/03_double_star_unpack.pyc
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16
test/simple_source/bug35/03_double_star_unpack.py
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@@ -1,9 +1,17 @@
# Bug in Python 3.5 is getting the two star'd arguments right.
def sum(a,b,c,d):
# Bug in 3.5 is detecting when there is more than
# one * in a call. There is a "BUILD_UNPACK_LIST" instruction used
# to unpack star arguments
def sum(a, b, c, d):
return a + b + c + d
args=(1,2)
a, b, c = 1, 2, 3
args = (1, 2)
sum(*args, *args)
# FIXME: these is handled incorrectly
# sum(a, *args, *args)
# sum(a, b, *args)
# FIXME: this is handled incorrectly
# (*c,) = (3,4)

22
uncompyle6/semantics/customize.py
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@@ -282,12 +282,22 @@ def customize_for_version(self, is_pypy, version):
node[kwarg_pos], node[args_pos] = node[args_pos], node[kwarg_pos]
args_pos = kwarg_pos
kwarg_pos += 1
elif key.kind == 'CALL_FUNCTION_VAR_0' and node[1][0] == 'build_list_unpack':
self.preorder(node[0])
build_list_unpack = node[1][0]
template = ('(*%P)', (0, len(build_list_unpack)-1, ', *', 100))
self.template_engine(template, build_list_unpack)
self.prune()
elif key.kind.startswith('CALL_FUNCTION_VAR'):
nargs = node[-1].attr
args_node = node[-2]
if args_node == 'pos_arg':
args_node = args_node[0]
if args_node == 'expr':
args_node = args_node[0]
if nargs > 0:
template = ('%c(%C, ', 0, (0, nargs, ', '))
else:
template = ('%c(', 0)
self.template_engine(template, node)
if args_node == 'build_list_unpack':
template = ('*%P)', (0, len(args_node)-1, ', *', 100))
self.template_engine(template, args_node)
self.prune()
self.default(node)
self.n_call = n_call