Need additional try vs try/else checks

before all of 2.6.9 stdlib parses without error.

.gitignore

@@ -1,11 +1,15 @@
-*.pyo
 *.pyc
+*.pyo
 *_dis
 *~
 /.cache
 /.eggs
+/.hypothesis
+/.idea
+/.pytest_cache
 /.python-version
 /.tox
+/.venv*
 /README
 /__pkginfo__.pyc
 /dist
@@ -14,9 +18,6 @@
 /tmp
 /uncompyle6.egg-info
 /unpyc
+ChangeLog
 __pycache__
 build
-/.venv*
-/.idea
-/.hypothesis
-ChangeLog

COPYING

@@ -0,0 +1,674 @@
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+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<http://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<http://www.gnu.org/philosophy/why-not-lgpl.html>.

HISTORY.md

@@ -1,4 +1,4 @@
-This project has history of over 17 years spanning back to Python 1.5
+This project has history of over 18 years spanning back to Python 1.5
 
 There have been a number of people who have worked on this. I am awed
 by the amount of work, number of people who have contributed to this,

HOW-TO-REPORT-A-BUG.md

@@ -57,6 +57,19 @@ disassembler called `pydisasm`.
 
 ### Semantic equivalence vs. exact source code
 
+Consider how Python compiles something like "(x*y) + 5". Early on
+Python creates an "abstract syntax tree" (AST) for this. And this is
+"abstract" in the sense that unimportant, redundant or unnecceary
+items have been removed. Here, this means that any notion that you
+wrote "x+y" in parenthesis is lost, since in this context they are
+unneeded. Also lost is the fact that the multiplication didn't have
+spaces around it while the addition did. It should not come as a
+surprise then that the bytecode which is derived from the AST also has
+no notion of such possible variation. Generally this kind of thing
+isn't noticed since the Python community has laid out a very rigid set
+of formatting guidelines; and it has largely beaten the community into
+compliance.
+
 Almost all versions of Python can perform some sort of code
 improvement that can't be undone. In earlier versions of Python it is
 rare; in later Python versions, it is more common.
@@ -66,7 +79,7 @@ If the code emitted is semantically equivalent, then this isn't a bug.
 
 For example the code might be
 
-```
+```python
 if a:
   if b:
      x = 1
@@ -74,7 +87,7 @@ if a:
 
 and we might produce:
 
-```
+```python
 if a and b:
   x = 1
 ```
@@ -87,24 +100,35 @@ else:
 
 ```
 
-may come out as `elif`.
+may come out as `elif` or vice versa.
 
 
 As mentioned in the README, It is possible that Python changes what
 you write to be more efficient. For example, for:
 
 
-```
+```python
 if True:
   x = 5
 ```
 
 Python will generate code like:
 
-```
+```python
 x = 5
 ```
 
+Even more extreme, if your code is:
+
+```python
+if False:
+   x = 1
+   y = 2
+   # ...
+```
+
+Python will eliminate the entire "if" statement.
+
 So just because the text isn't the same, does not
 necessarily mean there's a bug.
 

LICENSE

@@ -1,22 +0,0 @@
-Copyright (c) 2015 by Rocky Bernstein
-Copyright (c) 2000 by hartmut Goebel <h.goebel@crazy-compilers.com>
-Copyright (c) 1998-2002 John Aycock
-
-  Permission is hereby granted, free of charge, to any person obtaining
-  a copy of this software and associated documentation files (the
-  "Software"), to deal in the Software without restriction, including
-  without limitation the rights to use, copy, modify, merge, publish,
-  distribute, sublicense, and/or sell copies of the Software, and to
-  permit persons to whom the Software is furnished to do so, subject to
-  the following conditions:
-
-  The above copyright notice and this permission notice shall be
-  included in all copies or substantial portions of the Software.
-
-  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
-  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
-  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
-  IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
-  CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
-  TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
-  SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

MANIFEST.in

@@ -2,7 +2,7 @@ include README.rst
 include ChangeLog
 include HISTORY.md
 include HOW-TO-REPORT-A-BUG.md
-include LICENSE
+include COPYING
 include Makefile
 include requirements.txt
 include requirements-dev.txt

NEWS

@@ -1,3 +1,51 @@
+uncompyle6 3.0.1 2018-02-17
+
+- All Python 2.6.9 standard library files weakly verify
+- Many 3.6 fixes. 84% of the first 200 standard library files weakly compile.
+  One more big push is needed to get the remaining to compile
+- Many decompilation fixes for other Python versions
+- Add more to the test framework
+- And more add tests target previous existing bugs more completely
+- sync recent license changes in metadata
+
+uncompyle6 3.0.0 2018-02-17
+
+- deparse_code() and lookalikes from the various semantic actions are
+  now deprecated. Instead use new API code_deparse() which makes the
+  version optional and bundles debug options into a dictionary.
+- License changed to GPL3.
+- Many Python 3.6 fixes, especially around handling EXTENDED_ARGS
+  Due to the reduction in operand size for JUMP's there are many
+  more EXTENDED_ARGS instructions which can be the targets
+  of jumps, and messes up the peephole-like analysis that is
+  done for control flow since we don't have something better in place.
+- Code has been reorganized to be more instruction nametuple based where it
+  has been more bytecode array based. There was and still is code that had
+  had magic numbers to advance instructions or to pick out operands.
+- Bug fixes in numerous other Python versions
+- Instruction display improved
+- Keep global statements in fixed order (from wangym5106)
+
+A bit more work is still needed for 3.6 especially in the area of
+function calls and definitions.
+
+
+uncompyle6 2.16.0 2018-02-17
+
+- API additions:
+  - add fragments.op_at_code_loc() and
+  - fragments.deparsed_find()_
+- Better 2.7 end_if and COME_FROM determination
+- Fix up 3.6+ CALL_FUNCTION_EX
+- Misc pydisasm fixes
+- Weird comprehension bug seen via new loctraceback
+- Fix Python 3.5+ CALL_FUNCTION_VAR and BUILD_LIST_UNPACK in call; with this
+  we can can handle 3.5+ f(a, b, *c, *d, *e) now
+
+uncompyle6 2.15.1 2018-02-05
+
+- More bug fixes and revert an improper bug fix in 2.15.0
+
 uncompyle6 2.15.0 2018-02-05 pycon2018.co
 
 - Bug fixes
@@ -43,7 +91,7 @@ Decompilation bug fixes, mostly 3.6 and pre 2.7
 - limit pypy customization to pypy
 - Add addr fields in COME_FROMS
 - Allow use of full instructions in parser reduction routines
-- Reduce grammar in Pythion 3 by specialization more to specific
+- Reduce grammar in Python 3 by specialization more to specific
   Python versions
 - Match Python AST names more closely when possible
 
@@ -61,7 +109,7 @@ uncompyle6 2.14.0 2017-11-26 johnnybamazing
   and remove used grammar rules
 - Fix a number of bytecode decompile problems
   (many more remain)
-- Add stdlib/runtests.sh for even more rigourous testing
+- Add stdlib/runtests.sh for even more rigorous testing
 
 uncompyle6 2.13.3 2017-11-13
 
@@ -85,7 +133,7 @@ Overall: better 3.6 decompiling and some much needed code refactoring and cleanu
   added to assist here. Ignoring errors may be okay because the fragment parser often just needs,
   well, *fragments*.
 - Distinguish RETURN_VALUE from RETURN_END_IF in exception bodies better in 3.6
-- bug in 3.x language changes: import queue va import Queue
+- bug in 3.x language changes: import queue via import Queue
 - reinstate some bytecode tests since decompiling has gotten better
 - Revise how to report a bug
 
@@ -120,8 +168,8 @@ uncompyle6 2.11.4 2017-08-15
 
 * scanner and parser now allow 3-part version string lookups,
   e.g. 2.7.1 We allow a float here, but if passed a string like '2.7'. or
-* unpin 3.5.1. xdis 3.5.4 has been releasd and fixes the problems we had. Use that.
-* some routnes here moved to xdis. Use the xdis version
+* unpin 3.5.1. xdis 3.5.4 has been release and fixes the problems we had. Use that.
+* some routines here moved to xdis. Use the xdis version
 * README.rst: Link typo Name is trepan2 now not trepan
 * xdis-forced change adjust for COMPARE_OP "is-not" in
   semanatic routines. We need "is not".
@@ -217,9 +265,9 @@ uncompyle6 2.9.8 2016-12-16
 - fix bug in --verify option
 - DRY (a little) control-flow detection
 - fix syntax in tuples with one element
-- if AST rule inheritence in Python 2.5
+- if AST rule inheritance in Python 2.5
 - NAME_MODULE removal for Python <= 2.4
-- verifycall fixes for Python <= 2.4
+- verify call fixes for Python <= 2.4
 - more Python lint
 
 uncompyle6 2.9.7 2016-12-16
@@ -255,7 +303,7 @@ uncompyle6 2.9.6 2016-11-20
   in the results.
 - better control flow debugging output
 - Python 2 and 3 detect structure code is more similar
-- Handle Docstrings with embedded tiple quotes (""")
+- Handle Docstrings with embedded triple quotes (""")
 
 uncompyle6 2.9.5 2016-11-13
 

__pkginfo__.py

@@ -1,3 +1,17 @@
+# Copyright (C) 2018 Rocky Bernstein <rocky@gnu.org>
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """uncompyle6 packaging information"""
 
 # To the extent possible we make this file look more like a
@@ -14,6 +28,7 @@ Copyright (C) 2015-2018 Rocky Bernstein <rb@dustyfeet.com>.
 
 classifiers =  ['Development Status :: 5 - Production/Stable',
                 'Intended Audience :: Developers',
+                'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
                 'Operating System :: OS Independent',
                 'Programming Language :: Python',
                 'Programming Language :: Python :: 2.4',
@@ -41,9 +56,9 @@ entry_points       = {
     ]}
 ftp_url            = None
 install_requires   = ['spark-parser >= 1.8.5, < 1.9.0',
-                      'xdis >= 3.6.9, < 3.7.0', 'six']
+                      'xdis >= 3.7.0, < 3.8.0', 'six']
 
-license            = 'MIT'
+license            = 'GPL3'
 mailing_list       = 'python-debugger@googlegroups.com'
 modname            = 'uncompyle6'
 py_modules         = None

admin-tools/how-to-make-a-release.md

@@ -45,6 +45,8 @@
 
     $ source admin-tools/setup-python-2.4.sh
     $ git merge master
+	# Add and fix merge conflicts
+	$ git commit
 
 # Check against older versions
 

admin-tools/pyenv-newer-versions

@@ -5,4 +5,4 @@ if [[ $0 == ${BASH_SOURCE[0]} ]] ; then
     echo "This script should be *sourced* rather than run directly through bash"
     exit 1
 fi
-export PYVERSIONS='3.5.3 3.6.3 2.6.9 3.3.6 2.7.14 3.4.2'
+export PYVERSIONS='3.5.5 3.6.4 2.6.9 3.3.7 2.7.14 3.4.8'

admin-tools/run-pyenvlib-test-all.sh

@@ -0,0 +1,28 @@
+#!/bin/bash
+# Runs test_pyenvlib.test on all versions of Python master.
+function finish {
+  cd $owd
+}
+
+# FIXME put some of the below in a common routine
+owd=$(pwd)
+trap finish EXIT
+
+cd $(dirname ${BASH_SOURCE[0]})
+if ! source ./pyenv-newer-versions ; then
+    exit $?
+fi
+if ! source ./setup-master.sh ; then
+    exit $?
+fi
+cd ../test
+for version in $PYVERSIONS; do
+    if ! pyenv local $version ; then
+	exit $?
+    fi
+    echo "====== Running test_pyenvlib.py on $version ====="
+    if ! python ./test_pyenvlib.py --weak-verify --max 800 --${version} ; then
+	exit $?
+    fi
+    echo "------ Done test_pyenvlib.py on $version -----"
+done

admin-tools/setup-master.sh

@@ -1,5 +1,5 @@
 #!/bin/bash
-PYTHON_VERSION=3.6.3
+PYTHON_VERSION=3.6.4
 
 # FIXME put some of the below in a common routine
 function finish {

pytest/test_deparse.py

@@ -1,5 +1,5 @@
 import pytest
-from uncompyle6.semantics.fragments import deparse_code as deparse
+from uncompyle6.semantics.fragments import code_deparse as deparse, deparsed_find
 from uncompyle6 import PYTHON_VERSION, PYTHON3
 
 def map_stmts(x, y):
@@ -31,17 +31,19 @@ def list_comp():
 
 def get_parsed_for_fn(fn):
     code = fn.__code__ if PYTHON3 else fn.func_code
-    return deparse(PYTHON_VERSION, code)
+    return deparse(code, version=PYTHON_VERSION)
 
 def check_expect(expect, parsed, fn_name):
     debug = False
     i = 2
     max_expect = len(expect)
+    code = get_parsed_for_fn(fn_name)
     for name, offset in sorted(parsed.offsets.keys()):
         assert i+1 <= max_expect, (
             "%s: ran out if items in testing node" % fn_name)
         nodeInfo = parsed.offsets[name, offset]
         node = nodeInfo.node
+        nodeInfo2 = deparsed_find((name, offset), parsed, code)
         extractInfo = parsed.extract_node_info(node)
 
         assert expect[i] == extractInfo.selectedLine, \

pytest/test_fjt.py

@@ -71,7 +71,7 @@ def test_if_in_for():
     elif 3.2 < PYTHON_VERSION <= 3.4:
         bytecode = Bytecode(code, scan.opc)
         scan.code = array('B', code.co_code)
-        scan.build_lines_data(code)
+        scan.lines = scan.build_lines_data(code)
         scan.build_prev_op()
         scan.insts = list(bytecode)
         scan.offset2inst_index = {}

pytest/test_grammar.py

@@ -66,7 +66,7 @@ def test_grammar():
     expect_dup_rhs = frozenset([('COME_FROM',), ('CONTINUE',), ('JUMP_ABSOLUTE',),
                                 ('LOAD_CONST',),
                                 ('JUMP_BACK',), ('JUMP_FORWARD',)])
-    reduced_dup_rhs = {k: dup_rhs[k] for k in dup_rhs if k not in expect_dup_rhs}
+    reduced_dup_rhs = dict((k, dup_rhs[k]) for k in dup_rhs if k not in expect_dup_rhs)
     for k in reduced_dup_rhs:
         print(k, reduced_dup_rhs[k])
     # assert not reduced_dup_rhs, reduced_dup_rhs

pytest/test_token.py

@@ -0,0 +1,23 @@
+from uncompyle6.scanners.tok import Token
+
+def test_token():
+    # Test token formatting of: LOAD_CONST None
+    t = Token('LOAD_CONST', offset=0, attr=None, pattr=None, has_arg=True)
+    expect = '           0  LOAD_CONST               None'
+    # print(t.format())
+    assert t
+    assert t.format() == expect
+
+    # Make sure equality testing of tokens ignores offset
+    t2 = Token('LOAD_CONST', offset=2, attr=None, pattr=None, has_arg=True)
+    assert t2 == t
+
+
+    # Make sure formatting of: LOAD_CONST False. We assume False is the 0th index
+    # of co_consts.
+    t = Token('LOAD_CONST', offset=1, attr=False, pattr=False, has_arg=True)
+    expect = '           1  LOAD_CONST            0  False'
+    assert t.format() == expect
+
+if __name__ == '__main__':
+    test_token()

pytest/testdata/if-2.7.right

@@ -8,5 +8,5 @@
            9  STORE_NAME            2  'b'
           12  JUMP_FORWARD          0  'to 15'
         15_0  COME_FROM            12  '12'
-          15  LOAD_CONST            0  ''
+          15  LOAD_CONST            0  None
           18  RETURN_VALUE     

pytest/testdata/ifelse-2.7.right

@@ -11,5 +11,5 @@
    6      15  LOAD_CONST            1  2
           18  STORE_NAME            2  'd'
         21_0  COME_FROM            12  '12'
-          21  LOAD_CONST            2  ''
+          21  LOAD_CONST            2  None
           24  RETURN_VALUE     

test/Makefile

@@ -53,6 +53,7 @@ check-3.4: check-bytecode check-3.4-ok check-2.7-ok
 #: Run working tests from Python 3.5
 check-3.5: check-bytecode
 	$(PYTHON) test_pythonlib.py --bytecode-3.5 --weak-verify $(COMPILE)
+	$(PYTHON) test_pythonlib.py --bytecode-3.5-run --verify-run
 
 #: Run working tests from Python 3.6
 check-3.6: check-bytecode

test/run-and-email.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/bash
+EMAIL=${EMAIL:-rb@dustyfeet.com}
+for VERSION in 2.7.14 2.6.9 ; do
+    LOGFILE=/tmp/pyenlib-$VERSION-$$.log
+    python ./test_pyenvlib.py --max 800 --weak-verify --$VERSION  >$LOGFILE 2>&1
+    rc=$?
+    if ((rc == 0)); then
+	tail -v $LOGFILE | mail -s \""$VERSION ok"\" rocky@localhost
+    else
+	tail -v $LOGFILE | mail -s \""$VERSION not ok"\" rocky@localhost
+	tail -v $LOGFILE | mail -s \""$VERSION not ok"\" rb@dustyfeet.com
+    fi
+done

test/simple_source/bug25/03_try_else.py

@@ -1,18 +1,17 @@
-# From Python 2.4. test_cgi.py
-# Bug was in putting  try block inside the ifelse statement.
-
-# Note: this is a self testing program - will assert on failure.
-def do_test(method):
-    if method == "GET":
-        rc = 0
-    elif method == "POST":
-        rc = 1
-    else:
-        raise ValueError, "unknown method: %s" % method
+# Bug found in 2.4 test_math.py
+# Bug was turning last try/except/else into try/else
+import math
+def test_exceptions():
     try:
-        rc = 2
-    except ZeroDivisionError:
-        rc = 3
-    return rc
+        x = math.exp(-1000000000)
+    except:
+        raise RuntimeError
 
-assert 2 == do_test("GET")
+    try:
+        x = math.sqrt(-1.0)
+    except ValueError:
+        return x
+    else:
+        raise RuntimeError
+
+test_exceptions()

test/simple_source/bug25/08_if_while_else.py

@@ -0,0 +1,13 @@
+# From 2.3 Queue.py
+# Bug was adding COME_FROM from while
+# confusing the else
+def put(item, block=True, timeout=None):
+    if block:
+        if timeout:
+            while True:
+                if item:
+                    block = 1
+        else:
+            block = 5
+    elif item:
+        block = False

test/simple_source/bug26/02_while1_if_and.py

@@ -0,0 +1,19 @@
+# From 2.6.9 ftplib.py
+# Bug was handling if with "and' inside while1
+def getmultiline(line):
+    if line[3]:
+        while 1:
+            if line[2] and line[5]:
+                break
+    return
+
+# From 2.6.9 refactor.py
+def _detect_future_features(tp):
+    while True:
+        if tp == 6:
+            while tp == 7:
+                if tp != 11:
+                    break
+        else:
+            break
+    return

test/simple_source/bug26/03_tryelse_continue.py

@@ -21,5 +21,33 @@ def call(*args):
     except KeyError:
         return 2
     except TypeError:
-        # Unhashable argument
         return 3
+
+
+# From 2.6.9 pdb.py
+# Here we have a "try/except" inside a "try/except/else and we can't
+# distinguish which COME_FROM comes from which "try".
+
+def do_jump(self, arg):
+    try:
+        arg(1)
+    except ValueError:
+        arg(2)
+    else:
+        try:
+            arg(3)
+        except ValueError:
+            arg(4)
+
+# From 2.6.9 smtpd.py
+# Bug was that the for can cause multiple COME_FROMs at the
+# of the try block
+def _deliver(self, s, mailfrom, rcpttos):
+    try:
+        mailfrom(1)
+    except RuntimeError:
+        mailfrom(2)
+    except IndexError:
+        for r in s:
+            mailfrom()
+    return

test/simple_source/bug26/08_distbug.py

@@ -0,0 +1,13 @@
+# From 2.3.7 dis.py. Bug ranged from 2.2 to 2.6.
+# bug was in "while". uncompyle6 doesn't
+# add in a COME_FROM after the while. Maybe it should?
+
+def distb(tb=None):
+    """Disassemble a traceback (default: last traceback)."""
+    if tb is None:
+        try:
+            tb = sys.last_traceback
+        except AttributeError:
+            raise RuntimeError, "no last traceback to disassemble"
+        while tb.tb_next: tb = tb.tb_next
+    disassemble(tb.tb_frame.f_code, tb.tb_lasti)

test/simple_source/bug27+/03_not_dead_code.py

@@ -0,0 +1,9 @@
+# Bug found in 2.7 test_itertools.py
+# Bug was erroneously using reduction to unconditional_true
+# A proper fix would be to use unconditional_true only when we
+# can determine there is or was dead code.
+from itertools import izip_longest
+for args in [['abc', range(6)]]:
+    target = [tuple([arg[i] if i < len(arg) else None for arg in args])
+              for i in range(max(map(len, args)))]
+    assert list(izip_longest(*args)) ==  target

test/simple_source/bug27+/05_for_try_else.py

@@ -0,0 +1,20 @@
+# Bug found in 2.7 test_itertools.py
+def test_iziplongest(self):
+
+    # Having a for loop seems important
+    for args in ['abc']:
+        self.assertEqual(1, 2)
+
+    pass  # Having this seems important
+
+    # The bug was the except jumping back
+    # to the beginning of this for loop
+    for stmt in [
+        "izip_longest('abc', fv=1)",
+    ]:
+        try:
+            eval(stmt)
+        except TypeError:
+            pass
+        else:
+            self.fail()

test/simple_source/bug27+/05_not_unconditional.py

@@ -0,0 +1,12 @@
+# From 2.7 test_itertools.py
+# Bug was in 2.7 decompiling like the commented out
+# code below
+from itertools import izip_longest
+for args in [
+        ['abc', range(6)],
+        ]:
+    # target = [tuple([ arg[i] if 1 else None for arg in args if i < len(arg) ])
+    #          for i in range(max(map(len, args)))]
+    target = [tuple([arg[i] if i < len(arg) else None for arg in args])
+              for i in range(max(map(len, args)))]
+    assert list(izip_longest(*args)) == target

test/simple_source/bug33/03_func_params.py

@@ -4,3 +4,14 @@ def __new__(cls, encode, decode, streamreader=None, streamwriter=None,
     incrementalencoder=None, incrementaldecoder=None, name=None,
     *, _is_text_encoding=None):
     return
+
+# From 3.3 _pyio.py. A closure is created here.
+# This changes how the default params are found
+class StringIO(object):
+    def __init__(self, initial_value="", newline="\n"):
+        super(StringIO, self).__init__()
+
+# No closure created here
+class StringIO2(object):
+    def __init__(self, initial_value="", newline="\n"):
+        return 5

test/simple_source/bug33/10_while1_popblock.py

@@ -0,0 +1,17 @@
+# From 3.4.4 mailcap.py
+# Bug was needing a grammar rule to add POP_BLOCK before the end of the while1.
+# 3.3 apparently doesn't add this.
+def readmailcapfile(line):
+    while 1:
+        if not line: break
+        if line[0] == '#' or line.strip() == '':
+            continue
+        if not line:
+            continue
+        for j in range(3):
+            line[j] = line[j].strip()
+        if '/' in line:
+            line['/'].append('a')
+        else:
+            line['/'] = 'a'
+    return

test/simple_source/bug35/03_double_star_unpack.py

@@ -1,9 +1,16 @@
-# 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)
+args, a, b, c = (1, 2), 1, 2, 3
 sum(*args, *args)
+sum(*args, *args, *args)
+
+sum(a, *args, *args)
+sum(a, b, *args)
+sum(a, b, *args, *args)
 
 # FIXME: this is handled incorrectly
 # (*c,) = (3,4)

test/simple_source/bug36/01_call_function.py

@@ -1,5 +1,30 @@
 # Python 3.6's changes for calling functions.
 # See https://github.com/rocky/python-uncompyle6/issues/58
-# CALL_FUNCTION_EX takes 2 to 3 arguments on the stack: the function, the tuple of positional arguments,
-# and optionally the dict of keyword arguments if bit 0 of oparg is 1.
-a(*[])
+
+# CALL_FUNCTION_EX takes 2 to 3 arguments on the stack:
+# * the function,
+# * the tuple of positional arguments, and optionally
+# * the dict of keyword arguments if bit 0 of oparg is 1.
+from foo import f, dialect, args, kwds, reader
+
+f(*[])
+
+# From Python 3.6 csv.py
+# (f, dialect) are positional arg tuples, *args, is by itself, i.e.
+# no tuple.
+x = reader(f, dialect, *args, **kwds)
+
+# From 3.6 functools.py
+# Below there is a load_closure instruction added
+def cmp_to_key(mycmp):
+    class K(object):
+        def __ge__():
+            return mycmp()
+    return
+
+# In this situation though, there is no load_closure
+def cmp2_to_key(mycmp):
+    class K2(object):
+        def __ge__():
+            return 5
+    return

test/simple_source/bug36/03_fn_defaults.py

@@ -7,3 +7,9 @@ def foo3(bar, baz=1, qux=2):
     return 3
 def foo4(bar, baz, qux=1, quux=2):
     return 4
+
+# From 3.6 compileall.
+# Bug was in omitting default which when used in an "if"
+# are treated as False would be
+def _walk_dir(dir, ddir=None, maxlevels=10, quiet=0):
+    return

test/simple_source/bug36/04_try_finally.py

@@ -0,0 +1,20 @@
+# From 3.6 _pyio.py
+# Bug was in "return" not having "COME_FROM"
+# and in 1st try/finally no END_FINALLY (which really
+# hooks into the control-flow analysis).
+# The 2nd try/finally has an END_FINALLY although still
+# no "COME_FROM".
+
+def getvalue(self):
+    try:
+        return 3
+    finally:
+        return 1
+
+
+def getvalue1(self):
+    try:
+        return 4
+    finally:
+        pass
+    return 2

test/simple_source/bug36/05_call_function_kw2.py

@@ -0,0 +1,4 @@
+# From 3.6 _pydecimal. Bug was handling
+# keyword args in the return (CALL_FUNCTION_KW_2)
+def to_eng_string(self, context=None):
+    return self.__str__(eng=True, context=context)

test/simple_source/bug36/05_call_star_kw.py

@@ -0,0 +1,17 @@
+# From 3.6 base64.py. Bug was handling *, and keyword args
+def a85decode(b, *, foldspaces=False, adobe=False, ignorechars=b' \t\n\r\v'):
+    return
+
+# From 3.6 configparser.py. Same problem as above.
+_UNSET = object()
+def get(self, section, option, *, raw=False, vars=None, fallback=_UNSET):
+    return
+
+# From 3.6 compileall.py Bug is making default values are in quotes
+def compile_command(source, filename="<input>", symbol="single"):
+    return
+
+# From 3.6 _pyio.py. Bug was in getting order of metaclass=abc.ABCMeta right
+import abc
+class IOBase(metaclass=abc.ABCMeta):
+    pass

test/simple_source/bug36/06_listcomp_nest.py

@@ -0,0 +1,24 @@
+# From 3.6 _sitebuiltins.py
+# Bug was in handling double nested kinds of things like:
+#     for a in b for c in d
+
+# This required grammar modification and
+# and semantic action changes. LOAD_CLOSUREs are stored
+# inside a MAKE_TUPLE.
+
+# FIXME: test and try additional "if" clauses.
+def __init__(self, path, name, files=(), dirs=(), volumes=()):
+    f = [path.join(dir, filename)
+        for dir in dirs
+        for filename in files]
+    f2 = [path.join(drive, dir, filename)
+         for dir in dirs
+         for filename in files
+         for drive in volumes]
+    return f, f2
+
+# From 3.6 codeop. The below listcomp is generated still
+# like it was in 3.5
+import __future__
+_features = [getattr(__future__, fname)
+             for fname in __future__.all_feature_names]

test/simple_source/bug36/09_ext_arg_jump.py

@@ -0,0 +1,37 @@
+# From 3.6 argparse. Bug was in handling EXTENDED_ARGS in a JUMP_FORWARD
+# messing up control flow detection
+def _format_usage(self, usage, actions, groups, prefix):
+    if usage:
+        usage = usage % dict(prog=self._prog)
+
+    elif usage is None:
+        prog = 5
+
+        for action in actions:
+            if action.option_strings:
+                actions.append(action)
+            else:
+                actions.append(action)
+
+        action_usage = format(optionals + positionals, groups)
+
+        text_width = self._width - self._current_indent
+        if len(prefix) + len(usage) > text_width:
+
+            if len(prefix) + len(prog) <= 0.75 * text_width:
+                indent = ' ' * (len(prefix) + len(prog) + 1)
+                if opt_parts:
+                    lines.extend(get_lines(pos_parts, indent))
+                elif pos_parts:
+                    lines = get_lines([prog] + pos_parts, indent, prefix)
+                else:
+                    lines = [prog]
+
+            else:
+                if len(lines) > 1:
+                    lines.extend(get_lines(pos_parts, indent))
+                lines = [prog] + lines
+
+            usage = '\n'.positionals(lines)
+
+    return

test/simple_source/bug36/09_while_if_while.py

@@ -0,0 +1,9 @@
+# From 3.6 _markupbase.py
+# Bug was parsing the inner while
+def _parse_doctype_subset(c, j, rawdata, n):
+    while n:
+        if c:
+            j += 1
+            while j < n and rawdata[j]:
+                j += 1
+    return -1

test/simple_source/comprehension/05_dict_comp.py

@@ -0,0 +1,8 @@
+# Issue #162
+def x(s):
+    return {k: v
+            for (k, v) in s
+            if not k.startswith('_')
+    }
+
+assert x((('_foo', None),)) == {}

test/simple_source/stmts/01_rel_import.py

@@ -0,0 +1,2 @@
+# Tests relative imports
+from . import bogus

test/simple_source/stmts/02_while1else.py

@@ -6,3 +6,16 @@ def PipeClient(address):
     else:
         raise
     return
+
+# From 2.6.9 sre.py
+# Bug was parsing inner while1. Our massaging adds a COME_FROM
+# possibly in the wrong place. When control flow is
+# redone possibly all of this mess will disappear.
+def _parse(source, state, this, group, char):
+    while 1:
+        if this:
+            while 1:
+                raise RuntimeError
+        else:
+            raise IndexError
+    return

test/stdlib/run-and-email.sh

@@ -0,0 +1,13 @@
+#!/usr/bin/bash
+EMAIL=${EMAIL:-rb@dustyfeet.com}
+for VERSION in 2.7.14 2.6.9 ; do
+    LOGFILE=/tmp/runtests-$VERSION-$$.log
+    ./runtests.sh  >$LOGFILE 2>&1
+    rc=$?
+    if ((rc == 0)); then
+	tail -v $LOGFILE | mail -s \""$VERSION ok"\" rocky@localhost
+    else
+	tail -v $LOGFILE | mail -s \""$VERSION not ok"\" rocky@localhost
+	tail -v $LOGFILE | mail -s \""$VERSION not ok"\" rb@dustyfeet.com
+    fi
+done

test/stdlib/runtests.sh

@@ -27,24 +27,18 @@ case $PYVERSION in
 	SKIP_TESTS=(
 	    [test_dis.py]=1   # We change line numbers - duh!
 	    [test_grp.py]=1      # Long test - might work Control flow?
-	    [test_math.py]=1 # Control flow?
 	    [test_pwd.py]=1 # Long test - might work? Control flow?
 	    [test_queue.py]=1 # Control flow?
-	    [test_sax.py]=1  # Control flow?
 	    # [test_threading.py]=1 # Long test - works
-	    [test_types.py]=1 # Control flow?
 	)
 	;;
     2.5)
 	SKIP_TESTS=(
-	    [test_contextlib.py]=1
+	    [test_contextlib.py]=1 # Syntax error - look at
 	    [test_dis.py]=1   # We change line numbers - duh!
-	    [test_exceptions.py]=1
-	    [test_functools.py]=1
 	    [test_grammar.py]=1  # Too many stmts. Handle large stmts
 	    [test_grp.py]=1      # Long test - might work Control flow?
-	    [test_math.py]=1 # Control flow?
-	    [test_pdb.py]=1
+	    [test_pdb.py]=1      # Line-number specific
 	    [test_pwd.py]=1 # Long test - might work? Control flow?
 	    [test_queue.py]=1 # Control flow?
 	    [test_re.py]=1 # Probably Control flow?
@@ -58,7 +52,11 @@ case $PYVERSION in
 	    [test_opcodes.py]=1
 	    [test_pwd.py]=1 # Long test - might work? Control flow?
 	    [test_re.py]=1 # Probably Control flow?
+	    [test_queue.py]=1 # Control flow?
+	    [test_strftime.py]=1
 	    [test_trace.py]=1  # Line numbers are expected to be different
+	    [test_zipfile64.py]=1  # Skip Long test
+	    [test_zlib.py]=1  # Look at
 	    # .pyenv/versions/2.6.9/lib/python2.6/lib2to3/refactor.pyc
 	    # .pyenv/versions/2.6.9/lib/python2.6/pyclbr.pyc
 	    # .pyenv/versions/2.6.9/lib/python2.6/quopri.pyc -- look at ishex, is short
@@ -71,13 +69,19 @@ case $PYVERSION in
 	;;
     2.7)
 	SKIP_TESTS=(
+	    # These are ok, but our test machine POWER has problems
+	    # so we skip..
+	    [test_httplib.py]=1  # Ok, but POWER has problems with this
+	    [test_pdb.py]=1 # Ok, but POWER has problems with this
+
 	    [test_curses.py]=1  # Possibly fails on its own but not detected
 	    [test_dis.py]=1   # We change line numbers - duh!
 	    [test_doctest.py]=1 # Fails on its own
 	    [test_grammar.py]=1  # Too many stmts. Handle large stmts
 	    [test_io.py]=1 # Test takes too long to run
 	    [test_ioctl.py]=1 # Test takes too long to run
-	    [test_itertools.py]=1 # Syntax error - look at!
+	    [test_itertools.py]=1 # Fix erroneous reduction to "conditional_true".
+	                          # See test/simple_source/bug27+/05_not_unconditional.py
 	    [test_memoryio.py]=1 # FIX
 	    [test_multiprocessing.py]=1 # On uncompyle2, taks 24 secs
 	    [test_pep352.py]=1 # ?

test/test_pyenvlib.py

@@ -9,6 +9,7 @@ Usage-Examples:
   test_pyenvlib.py --all --verify	# decomyile all tests and verify results
   test_pyenvlib.py --test		# decompile only the testsuite
   test_pyenvlib.py --2.7.12 --verify	# decompile and verify python lib 2.7.11
+  test_pyenvlib.py --3.6.4 --max 10	# decompile first 10 of 3.6.4
 
 Adding own test-trees:
 
@@ -116,8 +117,10 @@ def do_tests(src_dir, patterns, target_dir, start_with=None,
             files = files[:max_files]
 
     print(time.ctime())
-    main.main(src_dir, target_dir, files, [], do_verify=do_verify)
+    (tot_files, okay_files, failed_files,
+     verify_failed_files) = main.main(src_dir, target_dir, files, [], do_verify=do_verify)
     print(time.ctime())
+    return verify_failed_files + failed_files
 
 if __name__ == '__main__':
     import getopt, sys
@@ -161,15 +164,19 @@ if __name__ == '__main__':
             '/tmp/spark-grammar-%s.cover' % vers
             )
 
+    failed = 0
     for src_dir, pattern, target_dir in test_dirs:
         if os.path.exists(src_dir):
             target_dir = os.path.join(target_base, target_dir)
             if os.path.exists(target_dir):
                 shutil.rmtree(target_dir, ignore_errors=1)
-            do_tests(src_dir, pattern, target_dir, start_with,
-                     do_verify, test_options['max='])
+            failed += do_tests(src_dir, pattern, target_dir, start_with,
+                               do_verify, test_options['max='])
         else:
             print("### Path %s doesn't exist; skipping" % src_dir)
+            pass
+        pass
+    sys.exit(failed)
 
 # python 1.5:
 

uncompyle6/__init__.py

@@ -1,7 +1,7 @@
 """
-  Copyright (c) 1999 John Aycock
+  Copyright (c) 2015, 2018 by Rocky Bernstein
   Copyright (c) 2000 by hartmut Goebel <h.goebel@crazy-compilers.com>
-  Copyright (c) 2015 by Rocky Bernstein
+  Copyright (c) 1999 John Aycock
 
   Permission is hereby granted, free of charge, to any person obtaining
   a copy of this software and associated documentation files (the
@@ -55,6 +55,10 @@ from uncompyle6.main import decompile_file
 uncompyle_file = decompile_file
 
 # Conventience functions so you can say:
-# from uncompyle6 import deparse_code
+# from uncompyle6 import (code_deparse, deparse_code2str)
 
+code_deparse = uncompyle6.semantics.pysource.code_deparse
+deparse_code2str = uncompyle6.semantics.pysource.deparse_code2str
+
+# This is deprecated:
 deparse_code = uncompyle6.semantics.pysource.deparse_code

uncompyle6/bin/pydisassemble.py

@@ -1,7 +1,7 @@
 #!/usr/bin/env python
 # Mode: -*- python -*-
 #
-# Copyright (c) 2015-2016 by Rocky Bernstein <rb@dustyfeet.com>
+# Copyright (c) 2015-2016, 2018 by Rocky Bernstein <rb@dustyfeet.com>
 #
 from __future__ import print_function
 import sys, os, getopt
@@ -13,16 +13,23 @@ program, ext = os.path.splitext(os.path.basename(__file__))
 
 __doc__ = """
 Usage:
-  %s [OPTIONS]... FILE
-  %s [--help | -h | -V | --version]
+  {0} [OPTIONS]... FILE
+  {0} [--help | -h | -V | --version]
+
+Disassemble FILE with the instruction mangling that is done to
+assist uncompyle6 in parsing the instruction stream. For example
+instructions with variable-length arguments like CALL_FUNCTION and
+BUILD_LIST have arguement counts appended to the instruction name, and
+COME_FROM instructions are inserted into the instruction stream.
 
 Examples:
   {0} foo.pyc
   {0} foo.py    # same thing as above but find the file
   {0} foo.pyc bar.pyc  # disassemble foo.pyc and bar.pyc
 
+See also `pydisasm' from the `xdis' package.
+
 Options:
-  -U | --uncompyle6  show instructions with uncompyle6 mangling
   -V | --version     show version and stop
   -h | --help        show this message
 
@@ -34,8 +41,6 @@ def main():
     Usage_short = """usage: %s FILE...
 Type -h for for full help.""" % program
 
-    native = True
-
     if len(sys.argv) == 1:
         print("No file(s) given", file=sys.stderr)
         print(Usage_short, file=sys.stderr)
@@ -55,8 +60,6 @@ Type -h for for full help.""" % program
         elif opt in ('-V', '--version'):
             print("%s %s" % (program, VERSION))
             sys.exit(0)
-        elif opt in ('-U', '--uncompyle6'):
-            native = False
         else:
             print(opt)
             print(Usage_short, file=sys.stderr)
@@ -64,7 +67,7 @@ Type -h for for full help.""" % program
 
     for file in files:
         if os.path.exists(files[0]):
-            disassemble_file(file, sys.stdout, native)
+            disassemble_file(file, sys.stdout)
         else:
             print("Can't read %s - skipping" % files[0],
                   file=sys.stderr)

uncompyle6/disas.py

@@ -1,7 +1,20 @@
-# Copyright (c) 2015-2016, 2818 by Rocky Bernstein
-# Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
-# Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
-# Copyright (c) 1999 John Aycock
+#  Copyright (c) 2015-2016, 2818 by Rocky Bernstein
+#  Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
+#  Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
+#  Copyright (c) 1999 John Aycock
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 """
 CPython magic- and version- independent disassembly routines

uncompyle6/linenumbers.py

@@ -1,3 +1,18 @@
+#  Copyright (c) 2015-2016, 2818 by Rocky Bernstein
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
 from collections import deque
 
 from xdis.code import iscode

uncompyle6/main.py

@@ -1,3 +1,17 @@
+# Copyright (C) 2018 Rocky Bernstein <rocky@gnu.org>
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 from __future__ import print_function
 import datetime, os, subprocess, sys, tempfile
 
@@ -9,8 +23,8 @@ from uncompyle6.parser import ParserError
 from uncompyle6.version import VERSION
 # from uncompyle6.linenumbers import line_number_mapping
 
-from uncompyle6.semantics.pysource import deparse_code
-from uncompyle6.semantics.fragments import deparse_code as deparse_code_fragments
+from uncompyle6.semantics.pysource import code_deparse
+from uncompyle6.semantics.fragments import code_deparse  as code_deparse_fragments
 from uncompyle6.semantics.linemap import deparse_code_with_map
 
 from xdis.load import load_module
@@ -29,7 +43,7 @@ def _get_outstream(outfile):
 def decompile(
         bytecode_version, co, out=None, showasm=None, showast=False,
         timestamp=None, showgrammar=False, code_objects={},
-        source_size=None, is_pypy=False, magic_int=None,
+        source_size=None, is_pypy=None, magic_int=None,
         mapstream=None, do_fragments=False):
     """
     ingests and deparses a given code block 'co'
@@ -60,6 +74,12 @@ def decompile(
     if source_size:
         write('# Size of source mod 2**32: %d bytes' % source_size)
 
+    debug_opts = {
+        'asm': showasm,
+        'ast': showast,
+        'grammar': showgrammar
+    }
+
     try:
         if mapstream:
             if isinstance(mapstream, str):
@@ -77,12 +97,12 @@ def decompile(
             mapstream.write("\n\n# %s\n" % linemap)
         else:
             if do_fragments:
-                deparse_fn = deparse_code_fragments
+                deparse_fn = code_deparse_fragments
             else:
-                deparse_fn = deparse_code
-            deparsed = deparse_fn(bytecode_version, co, out, showasm, showast,
-                                  showgrammar, code_objects=code_objects,
-                                      is_pypy=is_pypy)
+                deparse_fn = code_deparse
+            deparsed = deparse_fn(co, out, bytecode_version,
+                                  debug_opts = debug_opts,
+                                  is_pypy=is_pypy)
             pass
         return deparsed
     except pysource.SourceWalkerError as e:
@@ -217,6 +237,7 @@ def main(in_base, out_base, files, codes, outfile=None,
             sys.stdout.write("\n")
             sys.stderr.write("\n# file %s\n# %s\n" % (infile, e))
             failed_files += 1
+            tot_files += 1
         except KeyboardInterrupt:
             if outfile:
                 outstream.close()

uncompyle6/parser.py

@@ -1,7 +1,20 @@
-#  Copyright (c) 2015-2017 Rocky Bernstein
+#  Copyright (c) 2015-2018 Rocky Bernstein
 #  Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
 #  Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
 #  Copyright (c) 1999 John Aycock
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 Common uncompyle6 parser routines.
 """

uncompyle6/parsers/parse2.py

@@ -308,9 +308,9 @@ class Python2Parser(PythonParser):
                     ], customize)
                     if self.version >= 2.7:
                         self.add_unique_rule(
-                            'dictcomp_func ::= BUILD_MAP_n LOAD_FAST FOR_ITER store '
+                            'dict_comp_func ::= BUILD_MAP_n LOAD_FAST FOR_ITER store '
                             'comp_iter JUMP_BACK RETURN_VALUE RETURN_LAST',
-                            'dictcomp_func', 0, customize)
+                            'dict_comp_func', 0, customize)
 
                 else:
                     kvlist_n = "kvlist_%s" % token.attr

uncompyle6/parsers/parse22.py

@@ -18,6 +18,10 @@ class Python22Parser(Python23Parser):
                       COME_FROM POP_TOP COME_FROM
         list_for  ::= expr for_iter store list_iter CONTINUE JUMP_FORWARD
                       COME_FROM POP_TOP COME_FROM
+
+        # Some versions of Python 2.2 have been found to generate
+        # PRINT_ITEM_CONT for PRINT_ITEM
+        print_items_stmt ::= expr PRINT_ITEM_CONT print_items_opt
         '''
 
     def customize_grammar_rules(self, tokens, customize):

uncompyle6/parsers/parse23.py

@@ -32,6 +32,9 @@ class Python23Parser(Python24Parser):
         while1stmt ::= _while1test l_stmts_opt JUMP_BACK
                        POP_TOP POP_BLOCK COME_FROM
 
+        while1stmt ::= _while1test l_stmts_opt JUMP_BACK
+                       POP_TOP POP_BLOCK
+
         while1stmt ::= _while1test l_stmts_opt JUMP_BACK
                        COME_FROM POP_TOP POP_BLOCK COME_FROM
 

uncompyle6/parsers/parse24.py

@@ -33,8 +33,8 @@ class Python24Parser(Python25Parser):
         import_cont    ::= filler LOAD_CONST alias
 
         # Python 2.5+ omits POP_TOP POP_BLOCK
-        while1stmt ::= SETUP_LOOP l_stmts JUMP_BACK POP_TOP POP_BLOCK COME_FROM
         while1stmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK POP_TOP POP_BLOCK COME_FROM
+        while1stmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK POP_TOP POP_BLOCK
 
         # Python 2.5+:
         #  call_stmt ::= expr POP_TOP

uncompyle6/parsers/parse25.py

@@ -81,15 +81,16 @@ class Python25Parser(Python26Parser):
         """)
         super(Python25Parser, self).customize_grammar_rules(tokens, customize)
         if self.version == 2.5:
-            self.check_reduce['tryelsestmt'] = 'tokens'
+            self.check_reduce['try_except'] = 'tokens'
 
-    def reduce_is_invalid(self, rule, ast, tokens, first, last):
-        invalid = super(Python25Parser,
-                        self).reduce_is_invalid(rule, ast,
-                                                tokens, first, last)
-        if invalid:
-            return invalid
-        return False
+    ## Don't need this for 2.5 yet..
+    # def reduce_is_invalid(self, rule, ast, tokens, first, last):
+    #     invalid = super(Python25Parser,
+    #                     self).reduce_is_invalid(rule, ast,
+    #                                             tokens, first, last)
+    #     if invalid or tokens is None:
+    #         return invalid
+    #     return False
 
 
 class Python25ParserSingle(Python26Parser, PythonParserSingle):

uncompyle6/parsers/parse26.py

@@ -22,7 +22,7 @@ class Python26Parser(Python2Parser):
                            JUMP_IF_FALSE POP_TOP POP_TOP store POP_TOP
 
         except_handler ::= JUMP_FORWARD COME_FROM except_stmts
-                           come_from_pop END_FINALLY come_froms
+                           come_froms_pop END_FINALLY come_froms
 
         except_handler ::= JUMP_FORWARD COME_FROM except_stmts END_FINALLY
                            come_froms
@@ -77,8 +77,7 @@ class Python26Parser(Python2Parser):
         jb_cont      ::= JUMP_BACK
         jb_cont      ::= CONTINUE
 
-        jb_cf_pop ::= JUMP_BACK come_froms POP_TOP
-        jb_cf_pop ::= JUMP_BACK POP_TOP
+        jb_cf_pop ::= come_from_opt JUMP_BACK _come_froms POP_TOP
         ja_cf_pop ::= JUMP_ABSOLUTE come_froms POP_TOP
         jf_cf_pop ::= JUMP_FORWARD come_froms POP_TOP
 
@@ -115,8 +114,7 @@ class Python26Parser(Python2Parser):
 
         # Semantic actions want else_suitel to be at index 3
         ifelsestmtl ::= testexpr c_stmts_opt cf_jb_cf_pop else_suitel
-
-        ifelsestmtc ::= testexpr c_stmts_opt ja_cf_pop else_suitec
+        ifelsestmtc ::= testexpr c_stmts_opt ja_cf_pop    else_suitec
 
         # Semantic actions want suite_stmts_opt to be at index 3
         withstmt ::= expr setupwith SETUP_FINALLY suite_stmts_opt
@@ -135,10 +133,15 @@ class Python26Parser(Python2Parser):
         setup_finally ::= STORE_FAST SETUP_FINALLY LOAD_FAST DELETE_FAST
         setup_finally ::= STORE_NAME SETUP_FINALLY LOAD_NAME DELETE_NAME
 
-        while1stmt     ::= SETUP_LOOP l_stmts JUMP_BACK COME_FROM
+        while1stmt     ::= SETUP_LOOP l_stmts_opt come_from_opt JUMP_BACK _come_froms
+
+        # Sometimes JUMP_BACK is misclassified as CONTINUE.
+        # workaround until we have better control flow in place
+        while1stmt     ::= SETUP_LOOP l_stmts_opt CONTINUE _come_froms
 
         whilestmt      ::= SETUP_LOOP testexpr l_stmts_opt jb_pop POP_BLOCK _come_froms
         whilestmt      ::= SETUP_LOOP testexpr l_stmts_opt jb_cf_pop bp_come_from
+        whilestmt      ::= SETUP_LOOP testexpr l_stmts_opt jb_cf_pop POP_BLOCK
         whilestmt      ::= SETUP_LOOP testexpr returns POP_BLOCK COME_FROM
 
         whileelsestmt  ::= SETUP_LOOP testexpr l_stmts_opt jb_pop POP_BLOCK
@@ -149,13 +152,11 @@ class Python26Parser(Python2Parser):
         return         ::= ret_expr RETURN_VALUE POP_TOP
         return_if_stmt ::= ret_expr RETURN_END_IF POP_TOP
 
-        iflaststmtl ::= testexpr c_stmts_opt JUMP_BACK come_from_pop
+        iflaststmtl ::= testexpr c_stmts_opt jb_cf_pop
         iflaststmt  ::= testexpr c_stmts_opt JUMP_ABSOLUTE come_from_pop
 
         lastc_stmt ::= iflaststmt COME_FROM
 
-        while1stmt ::= SETUP_LOOP l_stmts_opt JUMP_BACK COME_FROM
-
         ifstmt         ::= testexpr_then _ifstmts_jump
 
         # Semantic actions want the else to be at position 3
@@ -314,6 +315,7 @@ class Python26Parser(Python2Parser):
         self.check_reduce['and'] = 'AST'
         self.check_reduce['list_for'] = 'AST'
         self.check_reduce['try_except'] = 'tokens'
+        self.check_reduce['tryelsestmt'] = 'AST'
 
     def reduce_is_invalid(self, rule, ast, tokens, first, last):
         invalid = super(Python26Parser,
@@ -341,7 +343,7 @@ class Python26Parser(Python2Parser):
             ja_attr = ast[4].attr
             return tokens[last].offset != ja_attr
         elif rule[0] == 'try_except':
-            # We need to distingush try_except from try_except_else and we do that
+            # We need to distingush try_except from tryelsestmt and we do that
             # by checking the jump before the END_FINALLY
             # If we have:
             #    insn
@@ -349,14 +351,65 @@ class Python26Parser(Python2Parser):
             #    END_FINALLY
             #    COME_FROM
             # then insn has to be either a JUMP_FORWARD or a RETURN_VALUE
+            # and if it is JUMP_FORWARD, then it has to be a JUMP_FORWARD to right after
+            # COME_FROM
             if last == len(tokens):
                 last -= 1
             if tokens[last] != 'COME_FROM' and tokens[last-1] == 'COME_FROM':
                 last -= 1
-            return (tokens[last] == 'COME_FROM'
-                    and tokens[last-1] == 'END_FINALLY'
-                    and tokens[last-2] == 'POP_TOP'
-                    and tokens[last-3].kind not in frozenset(('JUMP_FORWARD', 'RETURN_VALUE')))
+            if (tokens[last] == 'COME_FROM'
+                and tokens[last-1] == 'END_FINALLY'
+                    and tokens[last-2] == 'POP_TOP'):
+                # A jump of 2 is a jump around POP_TOP, END_FINALLY which
+                # would indicate try/else rather than try
+                return (tokens[last-3].kind not in frozenset(('JUMP_FORWARD', 'RETURN_VALUE'))
+                        or (tokens[last-3] == 'JUMP_FORWARD' and tokens[last-3].attr != 2))
+        elif rule[0] == 'tryelsestmt':
+
+            # We need to distingush try_except from tryelsestmt and we do that
+            # by making sure that the jump before the except handler jumps to
+            # code somewhere before the end of the construct.
+            # This AST method is slower, but the token-only based approach
+            # didn't work as it failed with a "try" embedded inside a "try/else"
+            # since we can't detect COME_FROM boundaries.
+
+            if ast[3] == 'except_handler':
+                except_handler = ast[3]
+                if except_handler[0] == 'JUMP_FORWARD':
+                    else_start = int(except_handler[0].pattr)
+                    if last == len(tokens):
+                        last -= 1
+                    if tokens[last] == 'COME_FROM' and isinstance:
+                        last_offset = int(tokens[last].offset.split('_')[0])
+                        return else_start >= last_offset
+
+
+            # The above test apparently isn't good enough, so we have additional
+            # checks distinguish try_except from tryelsestmt and we do that
+            # by checking the jump before the END_FINALLY
+            # If we have:
+            #    insn
+            #    POP_TOP
+            #    END_FINALLY
+            #    COME_FROM
+            # then insn is neither a JUMP_FORWARD nor RETURN_VALUE,
+            # or if it is JUMP_FORWARD, then it can't be a JUMP_FORWARD to right after
+            # COME_FROM
+            if last == len(tokens):
+                last -= 1
+            while tokens[last-1] == 'COME_FROM' and tokens[last-2] == 'COME_FROM':
+                last -= 1
+            if tokens[last] == 'COME_FROM' and tokens[last-1] == 'COME_FROM':
+                last -= 1
+            if (tokens[last] == 'COME_FROM'
+                and tokens[last-1] == 'END_FINALLY'
+                    and tokens[last-2] == 'POP_TOP'):
+                # A jump of 2 is a jump around POP_TOP, END_FINALLY which
+                # would indicate try/else rather than try
+                return (tokens[last-3].kind in frozenset(('JUMP_FORWARD', 'RETURN_VALUE'))
+                        and (tokens[last-3] != 'JUMP_FORWARD' or tokens[last-3].attr == 2))
+
+
         return False
 class Python26ParserSingle(Python2Parser, PythonParserSingle):
     pass

uncompyle6/parsers/parse27.py

@@ -1,4 +1,4 @@
-#  Copyright (c) 2016-2017 Rocky Bernstein
+#  Copyright (c) 2016-2018 Rocky Bernstein
 #  Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
 #  Copyright (c) 2000-2002 by hartmut Goebel <hartmut@goebel.noris.de>
 
@@ -17,24 +17,31 @@ class Python27Parser(Python2Parser):
         list_for  ::= expr for_iter store list_iter JUMP_BACK
         list_comp ::= BUILD_LIST_0 list_iter
         lc_body   ::= expr LIST_APPEND
+        for_iter  ::= GET_ITER COME_FROM FOR_ITER
+
+        stmt ::= set_comp_func
 
-        stmt ::= setcomp_func
 
         # Dictionary and set comprehensions were added in Python 2.7
         expr      ::= dict_comp
         dict_comp ::= LOAD_DICTCOMP MAKE_FUNCTION_0 expr GET_ITER CALL_FUNCTION_1
 
-        stmt          ::= dictcomp_func
-        dictcomp_func ::= BUILD_MAP_0 LOAD_FAST FOR_ITER store
-                         comp_iter JUMP_BACK RETURN_VALUE RETURN_LAST
+        stmt           ::= dict_comp_func
+        dict_comp_func ::= BUILD_MAP_0 LOAD_FAST FOR_ITER store
+                           comp_iter JUMP_BACK RETURN_VALUE RETURN_LAST
 
-        setcomp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
-                JUMP_BACK RETURN_VALUE RETURN_LAST
+        set_comp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
+                          JUMP_BACK RETURN_VALUE RETURN_LAST
 
         comp_body ::= dict_comp_body
         comp_body ::= set_comp_body
         comp_for ::= expr for_iter store comp_iter JUMP_BACK
 
+        comp_iter     ::= comp_if
+        comp_iter     ::= comp_if_not
+        comp_if_not   ::= expr jmp_true comp_iter
+        comp_iter     ::= comp_body
+
         dict_comp_body ::= expr expr MAP_ADD
         set_comp_body ::= expr SET_ADD
 
@@ -53,6 +60,9 @@ class Python27Parser(Python2Parser):
         tryelsestmtl   ::= SETUP_EXCEPT suite_stmts_opt POP_BLOCK
                            except_handler else_suitel JUMP_BACK COME_FROM
 
+        tryelsestmtl   ::= SETUP_EXCEPT suite_stmts_opt POP_BLOCK
+                           except_handler else_suitel
+
         except_stmt ::= except_cond2 except_suite
 
         except_cond1 ::= DUP_TOP expr COMPARE_OP
@@ -60,6 +70,9 @@ class Python27Parser(Python2Parser):
 
         except_cond2 ::= DUP_TOP expr COMPARE_OP
                          jmp_false POP_TOP store POP_TOP
+
+        for_block    ::= l_stmts_opt JUMP_BACK
+
         """
 
     def p_jump27(self, args):
@@ -94,7 +107,10 @@ class Python27Parser(Python2Parser):
 
         # conditional_true are for conditions which always evaluate true
         # There is dead or non-optional remnants of the condition code though,
-        # and we use that to match on to reconstruct the source more accurately
+        # and we use that to match on to reconstruct the source more accurately.
+        # FIXME: we should do analysis and reduce *only* if there is dead code?
+        #        right now we check that expr is "or". Any other nodes types?
+
         expr             ::= conditional_true
         conditional_true ::= expr JUMP_FORWARD expr COME_FROM
 
@@ -130,6 +146,11 @@ class Python27Parser(Python2Parser):
         whileelsestmt     ::= SETUP_LOOP testexpr l_stmts_opt JUMP_BACK POP_BLOCK
                               else_suitel COME_FROM
 
+        return_stmts      ::= _stmts return_stmt
+        return_stmts      ::= return_stmt
+        return_stmt       ::= return
+
+        ifstmt            ::= testexpr return_stmts COME_FROM
         ifstmt            ::= testexpr return_if_stmts COME_FROM
         ifelsestmt        ::= testexpr c_stmts_opt JUMP_FORWARD else_suite COME_FROM
         ifelsestmtc       ::= testexpr c_stmts_opt JUMP_ABSOLUTE else_suitec
@@ -154,6 +175,7 @@ class Python27Parser(Python2Parser):
         """)
         super(Python27Parser, self).customize_grammar_rules(tokens, customize)
         self.check_reduce['and'] = 'AST'
+        # self.check_reduce['conditional_true'] = 'AST'
         return
 
     def reduce_is_invalid(self, rule, ast, tokens, first, last):
@@ -169,6 +191,12 @@ class Python27Parser(Python2Parser):
             jmp_target = jmp_false.offset + jmp_false.attr + 3
             return not (jmp_target == tokens[last].offset or
                         tokens[last].pattr == jmp_false.pattr)
+        # elif rule[0] == ('conditional_true'):
+        #     # FIXME: the below is a hack: we check expr for
+        #     # nodes that could have possibly been a been a Boolean.
+        #     # We should also look for the presence of dead code.
+        #     return ast[0] == 'expr' and ast[0] == 'or'
+
         return False
 
 

uncompyle6/parsers/parse3.py

@@ -3,7 +3,18 @@
 #  Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
 #  Copyright (c) 1999 John Aycock
 #
-#  See LICENSE for license
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 A spark grammar for Python 3.x.
 
@@ -50,13 +61,13 @@ class Python3Parser(PythonParser):
         jb_or_c ::= JUMP_BACK
         jb_or_c ::= CONTINUE
 
-        stmt ::= setcomp_func
+        stmt ::= set_comp_func
 
-        setcomp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
-                JUMP_BACK RETURN_VALUE RETURN_LAST
+        set_comp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
+                          JUMP_BACK RETURN_VALUE RETURN_LAST
 
-        setcomp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
-                COME_FROM JUMP_BACK RETURN_VALUE RETURN_LAST
+        set_comp_func ::= BUILD_SET_0 LOAD_FAST FOR_ITER store comp_iter
+                          COME_FROM JUMP_BACK RETURN_VALUE RETURN_LAST
 
         comp_body ::= dict_comp_body
         comp_body ::= set_comp_body
@@ -66,14 +77,19 @@ class Python3Parser(PythonParser):
         # See also common Python p_list_comprehension
         """
 
-    def p_dictcomp3(self, args):
+    def p_dict_comp3(self, args):
         """"
         expr ::= dict_comp
-        stmt ::= dictcomp_func
-        dictcomp_func ::= BUILD_MAP_0 LOAD_FAST FOR_ITER store
-                          comp_iter JUMP_BACK RETURN_VALUE RETURN_LAST
-        dict_comp     ::= LOAD_DICTCOMP LOAD_CONST MAKE_FUNCTION_0 expr
-                          GET_ITER CALL_FUNCTION_1
+        stmt ::= dict_comp_func
+        dict_comp_func ::= BUILD_MAP_0 LOAD_FAST FOR_ITER store
+                           comp_iter JUMP_BACK RETURN_VALUE RETURN_LAST
+        dict_comp      ::= LOAD_DICTCOMP LOAD_CONST MAKE_FUNCTION_0 expr
+                           GET_ITER CALL_FUNCTION_1
+
+        comp_iter     ::= comp_if
+        comp_iter     ::= comp_if_not
+        comp_if_not   ::= expr jmp_true comp_iter
+        comp_iter     ::= comp_body
         """
 
     def p_grammar(self, args):
@@ -135,7 +151,7 @@ class Python3Parser(PythonParser):
         iflaststmtl ::= testexpr c_stmts_opt JUMP_BACK COME_FROM_LOOP
         iflaststmtl ::= testexpr c_stmts_opt JUMP_BACK POP_BLOCK
 
-        # These are used to keep AST indices the same
+        # These are used to keep parse tree indices the same
         jump_forward_else  ::= JUMP_FORWARD ELSE
         jump_absolute_else ::= JUMP_ABSOLUTE ELSE
 
@@ -483,33 +499,15 @@ class Python3Parser(PythonParser):
 
         token.kind = self.call_fn_name(token)
         uniq_param = args_kw + args_pos
-        if self.version == 3.5 and opname.startswith('CALL_FUNCTION_VAR'):
-            # Python 3.5 changes the stack position of *args. KW args come
-            # after *args.
-            # Python 3.6+ replaces CALL_FUNCTION_VAR_KW with CALL_FUNCTION_EX
-            if opname.endswith('KW'):
-                kw = 'expr '
-            else:
-                kw = ''
-            rule = ('call ::= expr expr ' +
-                    ('pos_arg ' * args_pos) +
-                    ('kwarg ' * args_kw) + kw + token.kind)
-            self.add_unique_rule(rule, token.kind, uniq_param, customize)
 
+        # Note: 3.5+ have subclassed this method; so we don't handle
+        # 'CALL_FUNCTION_VAR' or 'CALL_FUNCTION_EX' here.
         rule = ('call ::= expr ' +
-                ('pos_arg ' * args_pos) +
-                ('kwarg ' * args_kw) +
-                 'expr ' * nak + token.kind)
-
-        self.add_unique_rule(rule, token.kind, uniq_param, customize)
-        if self.version >= 3.5 and seen_GET_AWAITABLE_YIELD_FROM:
-            rule = ('async_call ::= expr ' +
                     ('pos_arg ' * args_pos) +
                     ('kwarg ' * args_kw) +
-                    'expr ' * nak + token.kind +
-                    ' GET_AWAITABLE LOAD_CONST YIELD_FROM')
-            self.add_unique_rule(rule, token.kind, uniq_param, customize)
-            self.add_unique_rule('expr ::= async_call', token.kind, uniq_param, customize)
+                    'expr ' * nak + token.kind)
+
+        self.add_unique_rule(rule, token.kind, uniq_param, customize)
 
         if possible_class_decorator:
             if next_token == 'CALL_FUNCTION' and next_token.attr == 1:
@@ -634,9 +632,9 @@ class Python3Parser(PythonParser):
                 kvlist_n = "kvlist_%s" % token.attr
                 if opname == 'BUILD_MAP_n':
                     # PyPy sometimes has no count. Sigh.
-                    rule = ('dictcomp_func ::= BUILD_MAP_n LOAD_FAST FOR_ITER store '
+                    rule = ('dict_comp_func ::= BUILD_MAP_n LOAD_FAST FOR_ITER store '
                             'comp_iter JUMP_BACK RETURN_VALUE RETURN_LAST')
-                    self.add_unique_rule(rule, 'dictomp_func', 1, customize)
+                    self.add_unique_rule(rule, 'dict_comp_func', 1, customize)
 
                     kvlist_n = 'kvlist_n'
                     rule = 'kvlist_n ::=  kvlist_n kv3'
@@ -670,6 +668,11 @@ class Python3Parser(PythonParser):
                 rule = ('build_map_unpack_with_call ::= ' + 'expr1024 ' * int(v//1024) +
                         'expr32 ' * int((v//32) % 32) +
                         'expr ' * (v % 32) + opname)
+                self.addRule(rule, nop_func)
+            elif opname.startswith('BUILD_TUPLE_UNPACK_WITH_CALL'):
+                v = token.attr
+                rule = ('starred ::= %s %s' % ('expr ' * v, opname))
+                self.addRule(rule, nop_func)
             elif opname_base in ('BUILD_LIST', 'BUILD_SET', 'BUILD_TUPLE'):
                 v = token.attr
 
@@ -898,8 +901,15 @@ class Python3Parser(PythonParser):
                                    "GET_ITER CALL_FUNCTION_1" % ('pos_arg '* args_pos, opname))
                         self.add_make_function_rule(rule_pat, opname, token.attr, customize)
                         if is_pypy or (i >= 2 and tokens[i-2] == 'LOAD_LISTCOMP'):
+                            if self.version >= 3.6:
+                                # 3.6+ sometimes bundles all of the
+                                # 'exprs' in the rule above into a
+                                # tuple.
+                                rule_pat = ("listcomp ::= load_closure LOAD_LISTCOMP %%s%s "
+                                        "expr GET_ITER CALL_FUNCTION_1" % (opname,))
+                                self.add_make_function_rule(rule_pat, opname, token.attr, customize)
                             rule_pat = ("listcomp ::= %sLOAD_LISTCOMP %%s%s expr "
-                                       "GET_ITER CALL_FUNCTION_1" % ('expr ' * args_pos, opname))
+                                        "GET_ITER CALL_FUNCTION_1" % ('expr ' * args_pos, opname))
                             self.add_make_function_rule(rule_pat, opname, token.attr, customize)
 
                     if is_pypy or (i >= 2 and tokens[i-2] == 'LOAD_LAMBDA'):
@@ -1116,10 +1126,6 @@ class Python30Parser(Python3Parser):
 
     def p_30(self, args):
         """
-        # Store locals is only in Python 3.0 to 3.3
-        stmt ::= store_locals
-        store_locals ::= LOAD_FAST STORE_LOCALS
-
         jmp_true ::= JUMP_IF_TRUE_OR_POP POP_TOP
         _ifstmts_jump ::= c_stmts_opt JUMP_FORWARD POP_TOP COME_FROM
         """

uncompyle6/parsers/parse30.py

@@ -11,9 +11,6 @@ class Python30Parser(Python31Parser):
 
     def p_30(self, args):
         """
-        # Store locals is only in Python 3.0 to 3.3
-        stmt         ::= store_locals
-        store_locals ::= LOAD_FAST STORE_LOCALS
 
         # FIXME: combine with parse3.2
         whileTruestmt     ::= SETUP_LOOP l_stmts_opt JUMP_BACK

uncompyle6/parsers/parse33.py

@@ -26,6 +26,13 @@ class Python33Parser(Python32Parser):
                         jump_excepts come_from_except_clauses
         """
 
+    def p_30to33(self, args):
+        """
+        # Store locals is only in Python 3.0 to 3.3
+        stmt           ::= store_locals
+        store_locals   ::= LOAD_FAST STORE_LOCALS
+        """
+
     def customize_grammar_rules(self, tokens, customize):
         self.remove_rules("""
         # 3.3+ adds POP_BLOCKS

uncompyle6/parsers/parse34.py

@@ -1,4 +1,17 @@
-#  Copyright (c) 2017 Rocky Bernstein
+#  Copyright (c) 2017-2018 Rocky Bernstein
+
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 spark grammar differences over Python 3.3 for Python 3.4
 """
@@ -18,6 +31,10 @@ class Python34Parser(Python33Parser):
         expr ::= LOAD_ASSERT
 
 
+        # Seems to be needed starting 3.4.4 or so
+        while1stmt    ::= SETUP_LOOP l_stmts
+                          COME_FROM JUMP_BACK POP_BLOCK COME_FROM_LOOP
+
         # FIXME the below masks a bug in not detecting COME_FROM_LOOP
         # grammar rules with COME_FROM -> COME_FROM_LOOP already exist
         whileelsestmt     ::= SETUP_LOOP testexpr l_stmts_opt JUMP_BACK POP_BLOCK
@@ -30,8 +47,10 @@ class Python34Parser(Python33Parser):
         """
 
     def customize_grammar_rules(self, tokens, customize):
-        # self.remove_rules("""
-        # """)
+        self.remove_rules("""
+        # 3.4.2 has this. 3.4.4 may now
+        # while1stmt ::= SETUP_LOOP l_stmts COME_FROM JUMP_BACK COME_FROM_LOOP
+        """)
         super(Python34Parser, self).customize_grammar_rules(tokens, customize)
         return
 

uncompyle6/parsers/parse35.py

@@ -187,6 +187,52 @@ class Python35Parser(Python34Parser):
             pass
         return
 
+    def custom_classfunc_rule(self, opname, token, customize,
+                              seen_LOAD_BUILD_CLASS,
+                              seen_GET_AWAITABLE_YIELD_FROM,
+                              *args):
+        args_pos, args_kw = self.get_pos_kw(token)
+
+        # Additional exprs for * and ** args:
+        #  0 if neither
+        #  1 for CALL_FUNCTION_VAR or CALL_FUNCTION_KW
+        #  2 for * and ** args (CALL_FUNCTION_VAR_KW).
+        # Yes, this computation based on instruction name is a little bit hoaky.
+        nak = ( len(opname)-len('CALL_FUNCTION') ) // 3
+        uniq_param = args_kw + args_pos
+
+        if seen_GET_AWAITABLE_YIELD_FROM:
+            rule = ('async_call ::= expr ' +
+                    ('pos_arg ' * args_pos) +
+                    ('kwarg ' * args_kw) +
+                    'expr ' * nak + token.kind +
+                    ' GET_AWAITABLE LOAD_CONST YIELD_FROM')
+            self.add_unique_rule(rule, token.kind, uniq_param, customize)
+            self.add_unique_rule('expr ::= async_call', token.kind, uniq_param, customize)
+
+        uniq_param = args_kw + args_pos
+        if opname.startswith('CALL_FUNCTION_VAR'):
+            # Python 3.5 changes the stack position of *args. KW args come
+            # after *args.
+
+            # Note: Python 3.6+ replaces CALL_FUNCTION_VAR and
+            # CALL_FUNCTION_VAR_KW with CALL_FUNCTION_EX
+
+            token.kind = self.call_fn_name(token)
+            if opname.endswith('KW'):
+                kw = 'expr '
+            else:
+                kw = ''
+            rule = ('call ::= expr expr ' +
+                    ('pos_arg ' * args_pos) +
+                    ('kwarg ' * args_kw) + kw + token.kind)
+            self.add_unique_rule(rule, token.kind, uniq_param, customize)
+        else:
+            super(Python35Parser, self).custom_classfunc_rule(opname, token, customize,
+                                                              seen_LOAD_BUILD_CLASS,
+                                                              seen_GET_AWAITABLE_YIELD_FROM,
+                                                              *args)
+
 class Python35ParserSingle(Python35Parser, PythonParserSingle):
     pass
 

uncompyle6/parsers/parse36.py

@@ -1,4 +1,17 @@
-#  Copyright (c) 2016-2017 Rocky Bernstein
+#  Copyright (c) 2016-2018 Rocky Bernstein
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 spark grammar differences over Python 3.5 for Python 3.6.
 """
@@ -7,6 +20,7 @@ from __future__ import print_function
 from uncompyle6.parser import PythonParserSingle, nop_func
 from spark_parser import DEFAULT_DEBUG as PARSER_DEFAULT_DEBUG
 from uncompyle6.parsers.parse35 import Python35Parser
+from uncompyle6.scanners.tok import Token
 
 class Python36Parser(Python35Parser):
 
@@ -17,6 +31,8 @@ class Python36Parser(Python35Parser):
 
     def p_36misc(self, args):
         """
+        sstmt ::= sstmt RETURN_LAST
+
         # 3.6 redoes how return_closure works
         return_closure   ::= LOAD_CLOSURE DUP_TOP STORE_NAME RETURN_VALUE RETURN_LAST
 
@@ -30,6 +46,8 @@ class Python36Parser(Python35Parser):
         for_block       ::= l_stmts_opt come_from_loops JUMP_BACK
         come_from_loops ::= COME_FROM_LOOP*
 
+        whilestmt       ::= SETUP_LOOP testexpr l_stmts_opt
+                            JUMP_BACK COME_FROM POP_BLOCK COME_FROM_LOOP
 
         # This might be valid in < 3.6
         and  ::= expr jmp_false expr
@@ -49,11 +67,20 @@ class Python36Parser(Python35Parser):
         except_handler36 ::= COME_FROM_EXCEPT except_stmts END_FINALLY
 
         stmt             ::= try_except36
-        try_except36     ::= SETUP_EXCEPT returns except_handler36 opt_come_from_except
+        try_except36     ::= SETUP_EXCEPT returns except_handler36
+                             opt_come_from_except
+
+        stmt             ::= tryfinally36
+        tryfinally36     ::= SETUP_FINALLY returns
+                             COME_FROM_FINALLY suite_stmts
+        tryfinally36     ::= SETUP_FINALLY returns
+                             COME_FROM_FINALLY suite_stmts_opt END_FINALLY
         """
 
     def customize_grammar_rules(self, tokens, customize):
         super(Python36Parser, self).customize_grammar_rules(tokens, customize)
+        self.check_reduce['call_kw'] = 'AST'
+
         for i, token in enumerate(tokens):
             opname = token.kind
 
@@ -132,6 +159,26 @@ class Python36Parser(Python35Parser):
     def custom_classfunc_rule(self, opname, token, customize,
                               possible_class_decorator,
                               seen_GET_AWAITABLE_YIELD_FROM, next_token):
+
+        args_pos, args_kw = self.get_pos_kw(token)
+
+        # Additional exprs for * and ** args:
+        #  0 if neither
+        #  1 for CALL_FUNCTION_VAR or CALL_FUNCTION_KW
+        #  2 for * and ** args (CALL_FUNCTION_VAR_KW).
+        # Yes, this computation based on instruction name is a little bit hoaky.
+        nak = ( len(opname)-len('CALL_FUNCTION') ) // 3
+        uniq_param = args_kw + args_pos
+
+        if seen_GET_AWAITABLE_YIELD_FROM:
+            rule = ('async_call ::= expr ' +
+                    ('pos_arg ' * args_pos) +
+                    ('kwarg ' * args_kw) +
+                    'expr ' * nak + token.kind +
+                    ' GET_AWAITABLE LOAD_CONST YIELD_FROM')
+            self.add_unique_rule(rule, token.kind, uniq_param, customize)
+            self.add_unique_rule('expr ::= async_call', token.kind, uniq_param, customize)
+
         if opname.startswith('CALL_FUNCTION_KW'):
             self.addRule("expr ::= call_kw", nop_func)
             values = 'expr ' * token.attr
@@ -143,6 +190,8 @@ class Python36Parser(Python35Parser):
             self.addRule("""expr        ::= call_ex_kw
                             expr        ::= call_ex_kw2
                             expr        ::= call_ex_kw3
+                            expr        ::= call_ex_kw4
+
                             call_ex_kw  ::= expr expr build_map_unpack_with_call
                                             CALL_FUNCTION_EX_KW
                             call_ex_kw2 ::= expr
@@ -150,6 +199,10 @@ class Python36Parser(Python35Parser):
                                             build_map_unpack_with_call
                                             CALL_FUNCTION_EX_KW
                             call_ex_kw3 ::= expr
+                                            build_tuple_unpack_with_call
+                                            expr
+                                            CALL_FUNCTION_EX_KW
+                            call_ex_kw4 ::= expr
                                             expr
                                             expr
                                             CALL_FUNCTION_EX_KW
@@ -169,6 +222,21 @@ class Python36Parser(Python35Parser):
                                                               seen_GET_AWAITABLE_YIELD_FROM,
                                                               next_token)
 
+    def reduce_is_invalid(self, rule, ast, tokens, first, last):
+        invalid = super(Python36Parser,
+                        self).reduce_is_invalid(rule, ast,
+                                                tokens, first, last)
+        if invalid:
+            return invalid
+        if rule[0] == 'call_kw':
+            # Make sure we don't derive call_kw
+            nt = ast[0]
+            while not isinstance(nt, Token):
+                if nt[0] == 'call_kw':
+                    return True
+                nt = nt[0]
+
+        return False
 class Python36ParserSingle(Python36Parser, PythonParserSingle):
     pass
 

uncompyle6/parsers/parse37.py

@@ -1,4 +1,17 @@
-#  Copyright (c) 2017 Rocky Bernstein
+#  Copyright (c) 2017-2018 Rocky Bernstein
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 spark grammar differences over Python 3.6 for Python 3.7
 """

uncompyle6/scanner.py

@@ -3,7 +3,18 @@
 #  Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
 #  Copyright (c) 1999 John Aycock
 #
-#  See LICENSE
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #
 """
 scanner/ingestion module. From here we call various version-specific
@@ -17,8 +28,8 @@ import sys
 from uncompyle6 import PYTHON3, IS_PYPY
 from uncompyle6.scanners.tok import Token
 import xdis
-from xdis.bytecode import op_size, extended_arg_val
-from xdis.magics import py_str2float, canonic_python_version
+from xdis.bytecode import instruction_size, extended_arg_val, next_offset
+from xdis.magics import canonic_python_version
 from xdis.util import code2num
 
 # The byte code versions we support.
@@ -91,19 +102,38 @@ class Scanner(object):
         That is, it is ether "JUMP_FORWARD" or an absolute jump that
         goes forward.
         """
-        if self.code[offset] == self.opc.JUMP_FORWARD:
+        opname = self.get_inst(offset).opname
+        if opname == 'JUMP_FORWARD':
             return True
-        if self.code[offset] != self.opc.JUMP_ABSOLUTE:
+        if opname != 'JUMP_ABSOLUTE':
             return False
-        # FIXME 0 isn't always correct
-        return offset < self.get_target(offset, 0)
+        return offset < self.get_target(offset)
 
-    def get_target(self, pos, op=None):
-        if op is None:
-            op = self.code[pos]
-        target = self.get_argument(pos)
-        if op in self.opc.JREL_OPS:
-            target += pos + 3
+    def prev_offset(self, offset):
+        return self.insts[self.offset2inst_index[offset]-1].offset
+
+    def get_inst(self, offset):
+        # Instructions can get moved as a result of EXTENDED_ARGS removal.
+        # So if "offset" is not in self.offset2inst_index, then
+        # we assume that it was an instruction moved back.
+        # We check that assumption though by looking at
+        # self.code's opcode.
+        if offset not in self.offset2inst_index:
+            offset -= instruction_size(self.opc.EXTENDED_ARG, self.opc)
+            assert self.code[offset] == self.opc.EXTENDED_ARG
+        return self.insts[self.offset2inst_index[offset]]
+
+    def get_target(self, offset, extended_arg=0):
+        """
+        Get next instruction offset for op located at given <offset>.
+        NOTE: extended_arg is no longer used
+        """
+        inst = self.get_inst(offset)
+        if inst.opcode in self.opc.JREL_OPS | self.opc.JABS_OPS:
+            target = inst.argval
+        else:
+            # No jump offset, so use fall-through offset
+            target = next_offset(inst.opcode, self.opc, inst.offset)
         return target
 
     def get_argument(self, pos):
@@ -269,7 +299,7 @@ class Scanner(object):
         """
         while start < end:
             yield start
-            start += op_size(self.code[start], self.opc)
+            start += instruction_size(self.code[start], self.opc)
 
     def remove_mid_line_ifs(self, ifs):
         """

uncompyle6/scanners/scanner2.py

@@ -1,6 +1,19 @@
-# Copyright (c) 2015-2018 by Rocky Bernstein
-# Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
-# Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
+#  Copyright (c) 2015-2018 by Rocky Bernstein
+#  Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
+#  Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 Python 2 Generic bytecode scanner/deparser
 
@@ -26,7 +39,9 @@ from collections import namedtuple
 from array import array
 
 from xdis.code import iscode
-from xdis.bytecode import Bytecode, op_has_argument, op_size, instruction_size
+from xdis.bytecode import (
+    Bytecode, op_has_argument, instruction_size,
+    _get_const_info)
 from xdis.util import code2num
 
 from uncompyle6.scanner import Scanner
@@ -72,13 +87,14 @@ class Scanner2(Scanner):
     def ingest(self, co, classname=None, code_objects={}, show_asm=None):
         """
         Pick out tokens from an uncompyle6 code object, and transform them,
-        returning a list of uncompyle6 'Token's.
+        returning a list of uncompyle6 Token's.
 
         The transformations are made to assist the deparsing grammar.
         Specificially:
            -  various types of LOAD_CONST's are categorized in terms of what they load
            -  COME_FROM instructions are added to assist parsing control structures
            -  MAKE_FUNCTION and FUNCTION_CALLS append the number of positional arguments
+           -  some EXTENDED_ARGS instructions are removed
 
         Also, when we encounter certain tokens, we add them to a set which will cause custom
         grammar rules. Specifically, variable arg tokens like MAKE_FUNCTION or BUILD_LIST
@@ -141,8 +157,10 @@ class Scanner2(Scanner):
                 if names[self.get_argument(i+3)] == 'AssertionError':
                     self.load_asserts.add(i+3)
 
+        # Get jump targets
+        # Format: {target offset: [jump offsets]}
         jump_targets = self.find_jump_targets(show_asm)
-        # contains (code, [addrRefToCode])
+        # print("XXX2", jump_targets)
 
         last_stmt = self.next_stmt[0]
         i = self.next_stmt[last_stmt]
@@ -217,7 +235,13 @@ class Scanner2(Scanner):
                         # (id(const), const.co_filename, const.co_name)
                         pattr = '<code_object ' + const.co_name + '>'
                     else:
+                        if oparg < len(co.co_consts):
+                            argval, _ = _get_const_info(oparg, co.co_consts)
+                        # Why don't we use _ above for "pattr" rather than "const"?
+                        # This *is* a little hoaky, but we have to coordinate with
+                        # other parts like n_LOAD_CONST in pysource.py for example.
                         pattr = const
+                        pass
                 elif op in self.opc.NAME_OPS:
                     pattr = names[oparg]
                 elif op in self.opc.JREL_OPS:
@@ -267,9 +291,22 @@ class Scanner2(Scanner):
                 target = self.get_target(offset)
                 if target <= offset:
                     op_name = 'JUMP_BACK'
-                    if (offset in self.stmts
-                        and self.code[offset+3] not in (self.opc.END_FINALLY,
-                                                        self.opc.POP_BLOCK)):
+
+                    # 'Continue's include jumps to loops that are not
+                    # and the end of a block which follow with POP_BLOCK and COME_FROM_LOOP.
+                    # If the JUMP_ABSOLUTE is
+                    #   either to a FOR_ITER or the instruction after a SETUP_LOOP
+                    #   and it is followed by another JUMP_FORWARD
+                    # then we'll take it as a "continue".
+                    j = self.offset2inst_index[offset]
+                    target_index = self.offset2inst_index[target]
+                    is_continue = (self.insts[target_index-1].opname == 'SETUP_LOOP'
+                                   and self.insts[j+1].opname == 'JUMP_FORWARD')
+                    if is_continue:
+                        op_name = 'CONTINUE'
+                    if (offset in self.stmts and
+                          self.code[offset+3] not in (self.opc.END_FINALLY,
+                                                     self.opc.POP_BLOCK)):
                         if ((offset in self.linestartoffsets and
                             self.code[self.prev[offset]] == self.opc.JUMP_ABSOLUTE)
                             or self.code[target] == self.opc.FOR_ITER
@@ -383,7 +420,7 @@ class Scanner2(Scanner):
                     if elem != code[i]:
                         match = False
                         break
-                    i += op_size(code[i], self.opc)
+                    i += instruction_size(code[i], self.opc)
 
                 if match:
                     i = self.prev[i]
@@ -629,7 +666,7 @@ class Scanner2(Scanner):
                                        'start': jump_back_offset+3,
                                        'end':   loop_end_offset})
         elif op == self.opc.SETUP_EXCEPT:
-            start  = offset + op_size(op, self.opc)
+            start  = offset + instruction_size(op, self.opc)
             target = self.get_target(offset, op)
             end_offset = self.restrict_to_parent(target, parent)
             if target != end_offset:
@@ -653,7 +690,7 @@ class Scanner2(Scanner):
                         setup_except_nest -= 1
                 elif self.code[end_finally_offset] == self.opc.SETUP_EXCEPT:
                     setup_except_nest += 1
-                end_finally_offset += op_size(code[end_finally_offset], self.opc)
+                end_finally_offset += instruction_size(code[end_finally_offset], self.opc)
                 pass
 
             # Add the except blocks
@@ -866,7 +903,7 @@ class Scanner2(Scanner):
                     else:
                         # We still have the case in 2.7 that the next instruction
                         # is a jump to a SETUP_LOOP target.
-                        next_offset = target + op_size(self.code[target], self.opc)
+                        next_offset = target + instruction_size(self.code[target], self.opc)
                         next_op = self.code[next_offset]
                         if self.op_name(next_op) == 'JUMP_FORWARD':
                             jump_target = self.get_target(next_offset, next_op)
@@ -958,17 +995,32 @@ class Scanner2(Scanner):
                                        'end':   end_offset})
             elif code_pre_rtarget == self.opc.RETURN_VALUE:
                 if self.version == 2.7 or pre_rtarget not in self.ignore_if:
-                    # 10 is exception-match. If there is an exception match in the
-                    # compare, then this is an exception clause not an if-then clause
+                    # Below, 10 is exception-match. If there is an exception
+                    # match in the compare, then this is an exception
+                    # clause not an if-then clause
                     if (self.code[self.prev[offset]] != self.opc.COMPARE_OP or
                         self.code[self.prev[offset]+1] != 10):
                         self.structs.append({'type':  'if-then',
                                                'start': start,
                                                'end':   rtarget})
                         self.thens[start] = rtarget
-                        if self.version == 2.7 or code[pre_rtarget+1] != self.opc.JUMP_FORWARD:
+                        if (self.version == 2.7 or
+                            code[pre_rtarget+1] != self.opc.JUMP_FORWARD):
+                            # The below is a big hack until we get
+                            # better control flow analysis: disallow
+                            # END_IF if the instruction before the
+                            # END_IF instruction happens to be a jump
+                            # target. In this case, probably what's
+                            # gone on is that we messed up on the
+                            # END_IF location and it should be the
+                            # instruction before.
                             self.fixed_jumps[offset] = rtarget
-                            self.return_end_ifs.add(pre_rtarget)
+                            if (self.version == 2.7 and
+                                self.insts[self.offset2inst_index[pre[pre_rtarget]]].is_jump_target):
+                                self.return_end_ifs.add(pre[pre_rtarget])
+                                pass
+                            else:
+                                self.return_end_ifs.add(pre_rtarget)
                             pass
                         pass
                     pass
@@ -1075,7 +1127,13 @@ class Scanner2(Scanner):
                                     source = self.setup_loops[label]
                                 else:
                                     source = offset
-                                targets[label] = targets.get(label, []) + [source]
+                                # FIXME: The grammar for 2.6 and before doesn't
+                                # handle COME_FROM's from a loop inside if's
+                                # It probably should.
+                                if (self.version > 2.6 or
+                                    self.code[source] != self.opc.SETUP_LOOP or
+                                        self.code[label] != self.opc.JUMP_FORWARD):
+                                    targets[label] = targets.get(label, []) + [source]
                                 pass
                             pass
                         pass

uncompyle6/scanners/scanner26.py

@@ -1,6 +1,19 @@
 #  Copyright (c) 2015-2017 by Rocky Bernstein
 #  Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
 #  Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 Python 2.6 bytecode scanner
 
@@ -20,6 +33,8 @@ from uncompyle6.scanner import L65536
 # bytecode verification, verify(), uses JUMP_OPs from here
 from xdis.opcodes import opcode_26
 from xdis.bytecode import Bytecode
+from xdis.bytecode import _get_const_info
+
 JUMP_OPS = opcode_26.JUMP_OPS
 
 class Scanner26(scan.Scanner2):
@@ -212,7 +227,13 @@ class Scanner26(scan.Scanner2):
                         # (id(const), const.co_filename, const.co_name)
                         pattr = '<code_object ' + const.co_name + '>'
                     else:
+                        if oparg < len(co.co_consts):
+                            argval, _ = _get_const_info(oparg, co.co_consts)
+                        # Why don't we use _ above for "pattr" rather than "const"?
+                        # This *is* a little hoaky, but we have to coordinate with
+                        # other parts like n_LOAD_CONST in pysource.py for example.
                         pattr = const
+                        pass
                 elif op in self.opc.NAME_OPS:
                     pattr = names[oparg]
                 elif op in self.opc.JREL_OPS:

uncompyle6/scanners/scanner3.py

@@ -1,6 +1,19 @@
 #  Copyright (c) 2015-2018 by Rocky Bernstein
 #  Copyright (c) 2005 by Dan Pascu <dan@windowmaker.org>
 #  Copyright (c) 2000-2002 by hartmut Goebel <h.goebel@crazy-compilers.com>
+#
+#  This program is free software: you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation, either version 3 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 """
 Python 3 Generic bytecode scanner/deparser
 
@@ -25,9 +38,8 @@ from __future__ import print_function
 from collections import namedtuple
 from array import array
 
-from uncompyle6.scanner import Scanner
 from xdis.code import iscode
-from xdis.bytecode import Bytecode, instruction_size
+from xdis.bytecode import Bytecode, instruction_size, _get_const_info
 
 from uncompyle6.scanner import Token, parse_fn_counts
 import xdis
@@ -35,6 +47,8 @@ import xdis
 # Get all the opcodes into globals
 import xdis.opcodes.opcode_33 as op3
 
+from uncompyle6.scanner import Scanner
+
 import sys
 from uncompyle6 import PYTHON3
 if PYTHON3:
@@ -140,6 +154,42 @@ class Scanner3(Scanner):
         # FIXME: remove the above in favor of:
         # self.varargs_ops = frozenset(self.opc.hasvargs)
 
+    def remove_extended_args(self, instructions):
+        """Go through instructions removing extended ARG.
+        get_instruction_bytes previously adjusted the operand values
+        to account for these"""
+        new_instructions = []
+        last_was_extarg = False
+        n = len(instructions)
+        for i, inst in enumerate(instructions):
+            if (inst.opname == 'EXTENDED_ARG' and
+                i+1 < n and instructions[i+1].opname != 'MAKE_FUNCTION'):
+                last_was_extarg = True
+                starts_line = inst.starts_line
+                is_jump_target = inst.is_jump_target
+                offset = inst.offset
+                continue
+            if last_was_extarg:
+
+                # j = self.stmts.index(inst.offset)
+                # self.lines[j] = offset
+
+                new_inst= inst._replace(starts_line=starts_line,
+                                        is_jump_target=is_jump_target,
+                                        offset=offset)
+                inst = new_inst
+                if i < n:
+                    new_prev = self.prev_op[instructions[i].offset]
+                    j = instructions[i+1].offset
+                    old_prev = self.prev_op[j]
+                    while self.prev_op[j] == old_prev and j < n:
+                        self.prev_op[j] = new_prev
+                        j += 1
+
+            last_was_extarg = False
+            new_instructions.append(inst)
+        return new_instructions
+
     def ingest(self, co, classname=None, code_objects={}, show_asm=None):
         """
         Pick out tokens from an uncompyle6 code object, and transform them,
@@ -171,17 +221,13 @@ class Scanner3(Scanner):
         # list of tokens/instructions
         tokens = []
 
-        # "customize" is a dict whose keys are nonterminals
-        # and the value is the argument stack entries for that
-        # nonterminal. The count is a little hoaky. It is mostly
-        # not used, but sometimes it is.
-        # "customize" is a dict whose keys are nonterminals
+        # "customize" is in the process of going away here
         customize = {}
 
         if self.is_pypy:
             customize['PyPy'] = 0
 
-        self.build_lines_data(co)
+        self.lines = self.build_lines_data(co)
         self.build_prev_op()
 
         # FIXME: put as its own method?
@@ -189,7 +235,8 @@ class Scanner3(Scanner):
         # turn 'LOAD_GLOBAL' to 'LOAD_ASSERT'.
         # 'LOAD_ASSERT' is used in assert statements.
         self.load_asserts = set()
-        self.insts = list(bytecode)
+        self.insts = self.remove_extended_args(list(bytecode))
+
         self.offset2inst_index = {}
         n = len(self.insts)
         for i, inst in enumerate(self.insts):
@@ -219,15 +266,16 @@ class Scanner3(Scanner):
 
         last_op_was_break = False
 
-        for i, inst in enumerate(bytecode):
+        for i, inst in enumerate(self.insts):
 
             argval = inst.argval
             op     = inst.opcode
 
-            if op == self.opc.EXTENDED_ARG:
+            if inst.opname == 'EXTENDED_ARG':
                 # FIXME: The EXTENDED_ARG is used to signal annotation
                 # parameters
-                if self.insts[i+1].opcode != self.opc.MAKE_FUNCTION:
+                if (i+1 < n and
+                    self.insts[i+1].opcode != self.opc.MAKE_FUNCTION):
                     continue
 
             if inst.offset in jump_targets:
@@ -241,6 +289,10 @@ class Scanner3(Scanner):
                 for jump_offset in sorted(jump_targets[inst.offset], reverse=True):
                     come_from_name = 'COME_FROM'
                     opname = self.opname_for_offset(jump_offset)
+                    if opname == 'EXTENDED_ARG':
+                        j = xdis.next_offset(op, self.opc, jump_offset)
+                        opname = self.opname_for_offset(j)
+
                     if opname.startswith('SETUP_'):
                         come_from_type = opname[len('SETUP_'):]
                         come_from_name = 'COME_FROM_%s' % come_from_type
@@ -287,6 +339,11 @@ class Scanner3(Scanner):
                     # (id(const), const.co_filename, const.co_name)
                     pattr = '<code_object ' + const.co_name + '>'
                 else:
+                    if isinstance(inst.arg, int) and inst.arg < len(co.co_consts):
+                        argval, _ = _get_const_info(inst.arg, co.co_consts)
+                    # Why don't we use _ above for "pattr" rather than "const"?
+                    # This *is* a little hoaky, but we have to coordinate with
+                    # other parts like n_LOAD_CONST in pysource.py for example.
                     pattr = const
                     pass
             elif opname in ('MAKE_FUNCTION', 'MAKE_CLOSURE'):
@@ -297,11 +354,6 @@ class Scanner3(Scanner):
                     attr = []
                     for flag in self.MAKE_FUNCTION_FLAGS:
                         bit = flags & 1
-                        if bit:
-                            if pattr:
-                                pattr += ", " + flag
-                            else:
-                                pattr += flag
                         attr.append(bit)
                         flags >>= 1
                     attr = attr[:4] # remove last value: attr[5] == False
@@ -364,15 +416,24 @@ class Scanner3(Scanner):
                 # as CONTINUE, but that's okay since we add a grammar
                 # rule for that.
                 pattr = argval
-                # FIXME: 0 isn't always correct
                 target = self.get_target(inst.offset)
                 if target <= inst.offset:
                     next_opname = self.insts[i+1].opname
-                    if (inst.offset in self.stmts and
+
+                    # 'Continue's include jumps to loops that are not
+                    # and the end of a block which follow with POP_BLOCK and COME_FROM_LOOP.
+                    # If the JUMP_ABSOLUTE is to a FOR_ITER and it is followed by another JUMP_FORWARD
+                    # then we'll take it as a "continue".
+                    is_continue = (self.insts[self.offset2inst_index[target]]
+                                  .opname == 'FOR_ITER'
+                                  and self.insts[i+1].opname == 'JUMP_FORWARD')
+
+                    if (is_continue or
+                        (inst.offset in self.stmts and
                         (self.version != 3.0 or (hasattr(inst, 'linestart'))) and
                         (next_opname not in ('END_FINALLY', 'POP_BLOCK',
                                             # Python 3.0 only uses POP_TOP
-                                            'POP_TOP'))):
+                                            'POP_TOP')))):
                         opname = 'CONTINUE'
                     else:
                         opname = 'JUMP_BACK'
@@ -416,7 +477,7 @@ class Scanner3(Scanner):
 
         if show_asm in ('both', 'after'):
             for t in tokens:
-                print(t)
+                print(t.format(line_prefix='L.'))
             print()
         return tokens, customize
 
@@ -432,7 +493,7 @@ class Scanner3(Scanner):
         self.linestart_offsets = set(a for (a, _) in linestarts)
         # 'List-map' which shows line number of current op and offset of
         # first op on following line, given offset of op as index
-        self.lines = lines = []
+        lines = []
         LineTuple = namedtuple('LineTuple', ['l_no', 'next'])
         # Iterate through available linestarts, and fill
         # the data for all code offsets encountered until
@@ -450,6 +511,7 @@ class Scanner3(Scanner):
         while offset < codelen:
             lines.append(LineTuple(prev_line_no, codelen))
             offset += 1
+        return lines
 
     def build_prev_op(self):
         """
@@ -510,7 +572,12 @@ class Scanner3(Scanner):
             if inst.has_arg:
                 label = self.fixed_jumps.get(offset)
                 oparg = inst.arg
-                next_offset = xdis.next_offset(op, self.opc, offset)
+                if (self.version >= 3.6 and
+                    self.code[offset] == self.opc.EXTENDED_ARG):
+                    j = xdis.next_offset(op, self.opc, offset)
+                    next_offset = xdis.next_offset(op, self.opc, j)
+                else:
+                    next_offset = xdis.next_offset(op, self.opc, offset)
 
                 if label is None:
                     if op in op3.hasjrel and op != self.opc.FOR_ITER:
@@ -619,42 +686,19 @@ class Scanner3(Scanner):
         # Finish filling the list for last statement
         slist += [codelen] * (codelen-len(slist))
 
-    def get_target(self, offset, extended_arg=0):
-        """
-        Get target offset for op located at given <offset>.
-        """
-        op = self.code[offset]
-        rel_offset = 0
-        if self.version  >= 3.6:
-            target = self.code[offset+1]
-            if op in self.opc.JREL_OPS:
-                rel_offset = offset + 2
-        else:
-            target = self.code[offset+1] + self.code[offset+2] * 256
-            if op in self.opc.JREL_OPS:
-                rel_offset = offset + 3
-                pass
-            pass
-        target += rel_offset
-        target += extended_arg
-
-        return target
-
     def detect_control_flow(self, offset, targets, inst_index):
         """
-        Detect structures and their boundaries to fix optimized jumps
+        Detect type of block structures and their boundaries to fix optimized jumps
         in python2.3+
         """
 
-        # TODO: check the struct boundaries more precisely -Dan
-
         code = self.code
-        op = code[offset]
+        op = self.insts[inst_index].opcode
 
         # Detect parent structure
         parent = self.structs[0]
-        start = parent['start']
-        end = parent['end']
+        start  = parent['start']
+        end    = parent['end']
 
         # Pick inner-most parent for our offset
         for struct in self.structs:
@@ -662,8 +706,8 @@ class Scanner3(Scanner):
             current_end   = struct['end']
             if ((current_start <= offset < current_end)
                 and (current_start >= start and current_end <= end)):
-                start = current_start
-                end = current_end
+                start  = current_start
+                end    = current_end
                 parent = struct
 
         if op == self.opc.SETUP_LOOP:
@@ -673,8 +717,7 @@ class Scanner3(Scanner):
             # It could be a return instruction.
 
             start += instruction_size(op, self.opc)
-            # FIXME: 0 = extended arg which is not right. Use self.insts instead
-            target = self.get_target(offset, 0)
+            target = self.get_target(offset)
             end    = self.restrict_to_parent(target, parent)
             self.setup_loops[target] = offset
 
@@ -715,7 +758,7 @@ class Scanner3(Scanner):
                 target = next_line_byte
                 end = xdis.next_offset(code[jump_back], self.opc, jump_back)
             else:
-                if self.get_target(jump_back, 0) >= next_line_byte:
+                if self.get_target(jump_back) >= next_line_byte:
                     jump_back = self.last_instr(start, end, self.opc.JUMP_ABSOLUTE, start, False)
 
                 # This is wrong for 3.6+
@@ -728,23 +771,24 @@ class Scanner3(Scanner):
                     self.fixed_jumps[offset] = jump_back+4
                     end = jump_back+4
 
-                # I think 0 right because jump_back has been adjusted for any EXTENDED_ARG
-                # it encounters
                 target = self.get_target(jump_back)
 
                 if code[target] in (self.opc.FOR_ITER, self.opc.GET_ITER):
                     loop_type = 'for'
                 else:
                     loop_type = 'while'
-                    test = self.prev_op[next_line_byte]
-
-                    if test == offset:
-                        loop_type = 'while 1'
-                    elif self.code[test] in self.opc.JUMP_OPs:
-                        self.ignore_if.add(test)
-                        test_target = self.get_target(test)
-                        if test_target > (jump_back+3):
-                            jump_back = test_target
+                    if next_line_byte < len(code):
+                        test_inst = self.insts[self.offset2inst_index[next_line_byte]-1]
+                        if test_inst.offset == offset:
+                            loop_type = 'while 1'
+                        elif test_inst.opcode in self.opc.JUMP_OPs:
+                            self.ignore_if.add(test_inst.offset)
+                            test_target = self.get_target(test_inst.offset)
+                            if test_target > (jump_back+3):
+                                jump_back = test_target
+                                pass
+                            pass
+                        pass
                 self.not_continue.add(jump_back)
             self.loops.append(target)
             self.structs.append({'type': loop_type + '-loop',
@@ -770,7 +814,7 @@ class Scanner3(Scanner):
             # not myself?  If so, it's part of a larger conditional.
             # rocky: if we have a conditional jump to the next instruction, then
             # possibly I am "skipping over" a "pass" or null statement.
-            pretarget = self.insts[self.offset2inst_index[prev_op[target]]]
+            pretarget = self.get_inst(prev_op[target])
 
             if (pretarget.opcode in self.pop_jump_if_pop and
                 (target > offset) and pretarget.offset != offset):
@@ -888,7 +932,7 @@ class Scanner3(Scanner):
             # like whether the target is "END_FINALLY"
             # or if the condition jump is to a forward location
             if self.is_jump_forward(pre_rtarget):
-                if_end = self.get_target(pre_rtarget, 0)
+                if_end = self.get_target(pre_rtarget)
 
                 # If the jump target is back, we are looping
                 if (if_end < pre_rtarget and
@@ -990,6 +1034,8 @@ class Scanner3(Scanner):
         elif op == self.opc.POP_EXCEPT:
             next_offset = xdis.next_offset(op, self.opc, offset)
             target = self.get_target(next_offset)
+            if target is None:
+                from trepan.api import debug; debug()
             if target > next_offset:
                 next_op = code[next_offset]
                 if (self.opc.JUMP_ABSOLUTE == next_op and