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Hacky handling of 3.6 format string 'X'.

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rocky
2019-04-30 20:06:36 -04:00
parent 03d23328eb
commit f54cf20d9d
4 changed files with 25 additions and 10 deletions
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BIN
test/bytecode_3.6_run/01_fstring.pyc
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7
test/simple_source/bug36/01_fstring.py
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@@ -17,3 +17,10 @@ x = f"{k}={v!r}"
y = f"functools.{x}({', '.join(v)})"
assert x == "1=['2']"
assert y == "functools.1=['2'](2)"
# From 3.6 http/client.py
# Bug is in handling X
chunk = ['a', 'b', 'c']
chunk2 = 'd'
chunk = f'{len(chunk):X}' + chunk2
assert chunk == '3d'

19
uncompyle6/parsers/parse36.py
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@@ -184,8 +184,17 @@ class Python36Parser(Python35Parser):
self.add_unique_doc_rules(rules_str, customize)
elif opname == 'FORMAT_VALUE':
rules_str = """
expr ::= fstring_single
fstring_single ::= expr FORMAT_VALUE
expr ::= fstring_single
fstring_single ::= expr FORMAT_VALUE
expr ::= fstring_expr
fstring_expr ::= expr FORMAT_VALUE
# FIXME: need to look inside FORMAT_VALUE to see if 4
fstring_single ::= expr expr FORMAT_VALUE
str ::= LOAD_CONST
formatted_value ::= fstring_expr
formatted_value ::= str
"""
self.add_unique_doc_rules(rules_str, customize)
elif opname == 'MAKE_FUNCTION_8':
@@ -233,12 +242,6 @@ class Python36Parser(Python35Parser):
v = token.attr
joined_str_n = "formatted_value_%s" % v
rules_str = """
expr ::= fstring_expr
fstring_expr ::= expr FORMAT_VALUE
str ::= LOAD_CONST
formatted_value ::= fstring_expr
formatted_value ::= str
expr ::= fstring_multi
fstring_multi ::= joined_str BUILD_STRING
joined_str ::= formatted_value+

9
uncompyle6/semantics/customize36.py
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@@ -324,7 +324,7 @@ def customize_for_version36(self, version):
self.call36_dict = call36_dict
FSTRING_CONVERSION_MAP = {1: '!s', 2: '!r', 3: '!a'}
FSTRING_CONVERSION_MAP = {1: '!s', 2: '!r', 3: '!a', 'X':':X'}
def n_except_suite_finalize(node):
if node[1] == 'returns' and self.hide_internal:
@@ -351,7 +351,12 @@ def customize_for_version36(self, version):
self.n_formatted_value = n_formatted_value
def f_conversion(node):
node.conversion = FSTRING_CONVERSION_MAP.get(node.data[1].attr, '')
fmt_node = node.data[1]
if fmt_node == 'expr' and fmt_node[0] == 'LOAD_CONST':
data = fmt_node[0].attr
else:
data = fmt_node
node.conversion = FSTRING_CONVERSION_MAP.get(data, '')
def fstring_expr(node):
f_conversion(node)