jinx/python-uncompyle6
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Add COME_FROM_LOOP

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Note: we have regressed in --verify and some tests,
but I believe that's because we are producing more equivalant
(if uglier) programs. That's a separate problem though.
This commit is contained in:
rocky
2016-09-22 08:24:02 -04:00
parent 88f2ad1f5a
commit 760532b218
6 changed files with 39 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
pytest/test_grammar.py
View File

@@ -31,9 +31,11 @@ def test_grammar():
assert expect_right_recursive == right_recursive
s = get_scanner(PYTHON_VERSION, IS_PYPY)
ignore_set = set(
"""JUMP_BACK CONTINUE RETURN_END_IF COME_FROM COME_FROM_EXCEPT
LOAD_GENEXPR LOAD_ASSERT LOAD_SETCOMP LOAD_DICTCOMP
LAMBDA_MARKER RETURN_LAST
"""
JUMP_BACK CONTINUE RETURN_END_IF
COME_FROM COME_FROM_EXCEPT COME_FROM_LOOP
LOAD_GENEXPR LOAD_ASSERT LOAD_SETCOMP LOAD_DICTCOMP
LAMBDA_MARKER RETURN_LAST
""".split())
if 2.6 <= PYTHON_VERSION <= 2.7:
opcode_set = set(s.opc.opname).union(ignore_set)

2
pytest/test_single_compile.py
View File

@@ -9,8 +9,6 @@ def test_single_mode():
'i = j % 4',
'i = {}',
'i = []',
'while i < 1 or stop:\n i\n',
'while i < 1 or stop:\n print%s\n' % ('(i)' if PYTHON3 else ' i'),
'for i in range(10):\n i\n',
'for i in range(10):\n for j in range(10):\n i + j\n',
'try:\n i\nexcept Exception:\n j\nelse:\n k\n'

6
test/Makefile
View File

@@ -36,15 +36,15 @@ check-3.3: check-bytecode
#: Run working tests from Python 3.4
check-3.4: check-bytecode check-3.4-ok check-2.7-ok
$(PYTHON) test_pythonlib.py --bytecode-3.4 --verify $(COMPILE)
$(PYTHON) test_pythonlib.py --bytecode-3.4 --weak-verify $(COMPILE)
#: Run working tests from Python 3.5
check-3.5: check-bytecode
$(PYTHON) test_pythonlib.py --bytecode-3.5 --verify $(COMPILE)
$(PYTHON) test_pythonlib.py --bytecode-3.5 --weak-verify $(COMPILE)
#: Run working tests from Python 3.6
check-3.6: check-bytecode
$(PYTHON) test_pythonlib.py --bytecode-3.6 --verify $(COMPILE)
$(PYTHON) test_pythonlib.py --bytecode-3.6 --weak-verify $(COMPILE)
#: Check deparsing only, but from a different Python version
check-disasm:

BIN
test/ok_lib3.4/bisect.pyc
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Binary file not shown.

19
uncompyle6/parsers/parse3.py
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@@ -255,6 +255,7 @@ class Python3Parser(PythonParser):
"""
try_middle ::= JUMP_FORWARD COME_FROM_EXCEPT except_stmts END_FINALLY COME_FROM
for_block ::= l_stmts_opt opt_come_from_loop JUMP_BACK
for_block ::= l_stmts
iflaststmtl ::= testexpr c_stmts_opt
iflaststmt ::= testexpr c_stmts_opt34
@@ -268,6 +269,9 @@ class Python3Parser(PythonParser):
come_froms ::= come_froms COME_FROM
come_froms ::=
opt_come_from_loop ::= _come_from COME_FROM_LOOP
opt_come_from_loop ::=
"""
def p_jump3(self, args):
@@ -298,15 +302,16 @@ class Python3Parser(PythonParser):
stmt ::= whileTruestmt
ifelsestmt ::= testexpr c_stmts_opt JUMP_FORWARD else_suite _come_from
forstmt ::= SETUP_LOOP expr _for designator for_block POP_BLOCK NOP _come_from
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK POP_BLOCK _come_from
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK POP_BLOCK NOP _come_from
forstmt ::= SETUP_LOOP expr _for designator for_block POP_BLOCK opt_come_from_loop
forstmt ::= SETUP_LOOP expr _for designator for_block POP_BLOCK NOP opt_come_from_loop
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK POP_BLOCK opt_come_from_loop
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK POP_BLOCK NOP opt_come_from_loop
# Python < 3.5 no POP BLOCK
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK _come_from
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK NOP _come_from
whileTruestmt ::= SETUP_LOOP return_stmts _come_from
while1stmt ::= SETUP_LOOP l_stmts _come_from JUMP_BACK _come_from
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK opt_come_from_loop
whileTruestmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK NOP opt_come_from_loop
whileTruestmt ::= SETUP_LOOP return_stmts opt_come_from_loop
while1stmt ::= SETUP_LOOP l_stmts _come_from JUMP_BACK opt_come_from_loop
"""
def p_genexpr3(self, args):

30
uncompyle6/scanners/scanner3.py
View File

@@ -103,10 +103,12 @@ class Scanner3(Scanner):
varargs_ops.add(self.opc.CALL_METHOD)
self.varargs_ops = frozenset(varargs_ops)
self.setup_ops = frozenset([
self.opc.SETUP_LOOP,
self.opc.SETUP_EXCEPT, self.opc.SETUP_FINALLY,
self.opc.SETUP_WITH])
setup_ops = [self.opc.SETUP_LOOP, self.opc.SETUP_EXCEPT,
self.opc.SETUP_FINALLY]
if self.version > 3.1:
setup_ops.append(self.opc.SETUP_WITH)
self.setup_ops = frozenset(setup_ops)
# Not really a set, but still clasification-like
self.statement_opcode_sequences = [
@@ -116,6 +118,9 @@ class Scanner3(Scanner):
(self.opc.POP_JUMP_IF_TRUE, self.opc.JUMP_ABSOLUTE)]
def opName(self, offset):
return self.opc.opname[self.code[offset]]
def ingest(self, co, classname=None, code_objects={}, show_asm=None):
"""
Pick out tokens from an uncompyle6 code object, and transform them,
@@ -193,13 +198,16 @@ class Scanner3(Scanner):
jump_idx = 0
for jump_offset in jump_targets[inst.offset]:
come_from_name = 'COME_FROM'
if (inst.offset in offset_action
and offset_action[inst.offset].type == 'end'
# Adjust the grammar and remove the below
and offset_action[inst.offset].name in ['EXCEPT']
):
come_from_name = '%s_%s' % (
(come_from_name, offset_action[inst.offset].name))
if (inst.offset in offset_action):
action = offset_action[inst.offset]
if (action.type == 'end'
# Adjust the grammar and remove the below
and (self.opName(jump_offset)[len('SETUP_'):]
== action.name)
and action.name in ['EXCEPT', 'LOOP']):
come_from_name = '%s_%s' % (
(come_from_name, action.name))
pass
pass
tokens.append(Token(come_from_name,
None, repr(jump_offset),