Magic-Mirror/python-uncompyle6
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Cope more JUMP/POP_IF not being in 3.0...

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more is probably needed though.
This commit is contained in:
rocky 2019-11-11 19:58:35 -05:00
parent 4abdffecb9
commit 9f250b49ee
4 changed files with 30 additions and 5 deletions
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BIN
test/bytecode_3.0_run/04_and_del.pyc
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10
test/simple_source/bug30/04_and_del.py
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@ -18,3 +18,13 @@ assert normpath(['.']) == []
assert normpath(['a', 'b', '..']) == ['a']
assert normpath(['a', 'b', '', 'c']) == ['a', 'b', 'c']
assert normpath(['a', 'b', '.', '', 'c', '..']) == ['a', 'b']
# Adapted from 3.0.1 cgi.py
# Bug was in detecting "or" and "and" due to lack of PUSH/POP_IF instructions.
def handle(format, html, text):
formatter = (format and html) or text
return formatter
assert handle(False, False, True)
assert not handle(True, False, False)
assert handle(True, True, False)

19
uncompyle6/parsers/parse30.py
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@ -124,6 +124,10 @@ class Python30Parser(Python31Parser):
except_handler ::= jmp_abs COME_FROM_EXCEPT except_stmts
COME_FROM POP_TOP END_FINALLY
expr ::= or30
ret_or ::= or30
or30 ::= expr JUMP_IF_TRUE COME_FROM POP_TOP expr come_from_opt
################################################################################
for_block ::= l_stmts_opt _come_froms POP_TOP JUMP_BACK
@ -168,15 +172,22 @@ class Python30Parser(Python31Parser):
whileelsestmt ::= SETUP_LOOP testexpr l_stmts JUMP_BACK POP_BLOCK
else_suitel COME_FROM_LOOP
# No JUMP_IF_FALSE_OR_POP
# No JUMP_IF_FALSE_OR_POP, JUMP_IF_TRUE_OR_POP,
# POP_JUMP_IF_FALSE, or POP_JUMP_IF_TRUE
jmp_false ::= POP_JUMP_IF_FALSE
jmp_true ::= JUMP_IF_TRUE_OR_POP POP_TOP
compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP JUMP_IF_FALSE_OR_POP
compare_chained1 COME_FROM
compare_chained1 ::= expr DUP_TOP ROT_THREE COMPARE_OP JUMP_IF_FALSE_OR_POP
compare_chained2 COME_FROM
ret_or ::= expr JUMP_IF_TRUE_OR_POP ret_expr_or_cond COME_FROM
or ::= expr JUMP_IF_TRUE_OR_POP expr COME_FROM
""")
self.check_reduce['iflaststmtl'] = 'AST'
# self.check_reduce['ifelsestmt'] = 'AST'
self.check_reduce["iflaststmtl"] = "AST"
self.check_reduce['ifstmt'] = "AST"
# self.check_reduce["ifelsestmt"] = "AST"
return
def reduce_is_invalid(self, rule, ast, tokens, first, last):
@ -186,7 +197,7 @@ class Python30Parser(Python31Parser):
if invalid:
return invalid
if (
rule[0] in ("iflaststmtl",) and ast[0] == "testexpr"
rule[0] in ("iflaststmtl", "ifstmt") and ast[0] == "testexpr"
):
testexpr = ast[0]
if testexpr[0] == "testfalse":

6
uncompyle6/semantics/customize3.py
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@ -182,9 +182,13 @@ def customize_for_version3(self, version):
# since we pick up the iteration variable some other way and
# we definitely don't include in the source _[dd].
TABLE_DIRECT.update({
'ifstmt30': ( '%|if %c:\n%+%c%-',
'ifstmt30': ( "%|if %c:\n%+%c%-",
(0, "testexpr_then"),
(1, "_ifstmts_jump30") ),
"or30": ( "%c or %c",
(0, "expr"),
(4, "expr") ),
})
def n_comp_iter(node):