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Work on 3.5+ BUILD_MAP_UNPACK...

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bugs still remain, just reduced.
This commit is contained in:
rocky
2018-04-01 13:41:16 -04:00
parent ab1dba1536
commit 6b78677a74
4 changed files with 27 additions and 9 deletions
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test/bytecode_3.5/01_map_unpack.pyc
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test/bytecode_3.5_run/01_map_unpack.pyc Normal file
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22
test/simple_source/bug35/01_map_unpack.py
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@@ -1,9 +1,19 @@
# Python 3.5+ PEP 448 - Additional Unpacking Generalizations for dictionaries
{**{}}
{**{'a': 1, 'b': 2}}
## {**{'x': 1}, **{'y': 2}}
# RUNNABLE!
b = {**{}}
assert b == {}
c = {**{'a': 1, 'b': 2}}
assert c == {'a': 1, 'b': 2}
d = {**{'x': 1}, **{'y': 2}}
assert d == {'x': 1, 'y': 2}
# {'c': 1, {'d': 2}, **{'e': 3}}
[*[]]
{**{0:0 for a in b}}
## {**{}, **{}}
## {**{}, **{}, **{}}
assert {0: 0} == {**{0:0 for a in c}}
# FIXME: assert deparsing is incorrect for:
# {**{}, **{}}
# assert {} == {**{}, **{}, **{}}
# {**{}, **{}, **{}}
# assert {} == {**{}, **{}, **{}}

14
uncompyle6/semantics/pysource.py
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@@ -1696,7 +1696,8 @@ class SourceWalker(GenericASTTraversal, object):
self.indent_more(INDENT_PER_LEVEL)
sep = INDENT_PER_LEVEL[:-1]
self.write('{')
if node[0] != 'dict_entry':
self.write('{')
line_number = self.line_number
if self.version >= 3.0 and not self.is_pypy:
@@ -1778,7 +1779,13 @@ class SourceWalker(GenericASTTraversal, object):
if sep.startswith(",\n"):
self.write(sep[1:])
pass
elif node[-1].kind.startswith('BUILD_MAP_UNPACK'):
elif node[0].kind.startswith('dict_entry'):
assert self.version >= 3.5
template = ("%C", (0, len(node[0]), ", **"))
self.template_engine(template, node[0])
sep = ''
elif (node[-1].kind.startswith('BUILD_MAP_UNPACK')
or node[-1].kind.startswith('dict_entry')):
assert self.version >= 3.5
# FIXME: I think we can intermingle dict_comp's with other
# dictionary kinds of things. The most common though is
@@ -1852,7 +1859,8 @@ class SourceWalker(GenericASTTraversal, object):
pass
if sep.startswith(",\n"):
self.write(sep[1:])
self.write('}')
if node[0] != 'dict_entry':
self.write('}')
self.indent_less(INDENT_PER_LEVEL)
self.prec = p
self.prune()