unix-cpy: Remove unix-cpy. It's no longer needed.

unix-cpy was originally written to get semantic equivalent with CPython
without writing functional tests.  When writing the initial
implementation of uPy it was a long way between lexer and functional
tests, so the half-way test was to make sure that the bytecode was
correct.  The idea was that if the uPy bytecode matched CPython 1-1 then
uPy would be proper Python if the bytecodes acted correctly.  And having
matching bytecode meant that it was less likely to miss some deep
subtlety in the Python semantics that would require an architectural
change later on.

But that is all history and it no longer makes sense to retain the
ability to output CPython bytecode, because:

1. It outputs CPython 3.3 compatible bytecode.  CPython's bytecode
changes from version to version, and seems to have changed quite a bit
in 3.5.  There's no point in changing the bytecode output to match
CPython anymore.

2. uPy and CPy do different optimisations to the bytecode which makes it
harder to match.

3. The bytecode tests are not run.  They were never part of Travis and
are not run locally anymore.

4. The EMIT_CPYTHON option needs a lot of extra source code which adds
heaps of noise, especially in compile.c.

5. Now that there is an extensive test suite (which tests functionality)
there is no need to match the bytecode.  Some very subtle behaviour is
tested with the test suite and passing these tests is a much better
way to stay Python-language compliant, rather than trying to match
CPy bytecode.

1 files changed, 0 insertions, 199 deletions

diff --git a/tests/bytecode/pylib-tests/uu.py b/tests/bytecode/pylib-tests/uu.py
deleted file mode 100644
index d68d29374..000000000
--- a/tests/bytecode/pylib-tests/uu.py
+++ /dev/null
@@ -1,199 +0,0 @@
-#! /usr/bin/env python3
-
-# Copyright 1994 by Lance Ellinghouse
-# Cathedral City, California Republic, United States of America.
-#                        All Rights Reserved
-# Permission to use, copy, modify, and distribute this software and its
-# documentation for any purpose and without fee is hereby granted,
-# provided that the above copyright notice appear in all copies and that
-# both that copyright notice and this permission notice appear in
-# supporting documentation, and that the name of Lance Ellinghouse
-# not be used in advertising or publicity pertaining to distribution
-# of the software without specific, written prior permission.
-# LANCE ELLINGHOUSE DISCLAIMS ALL WARRANTIES WITH REGARD TO
-# THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
-# FITNESS, IN NO EVENT SHALL LANCE ELLINGHOUSE CENTRUM BE LIABLE
-# FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
-# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
-# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT
-# OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
-#
-# Modified by Jack Jansen, CWI, July 1995:
-# - Use binascii module to do the actual line-by-line conversion
-#   between ascii and binary. This results in a 1000-fold speedup. The C
-#   version is still 5 times faster, though.
-# - Arguments more compliant with python standard
-
-"""Implementation of the UUencode and UUdecode functions.
-
-encode(in_file, out_file [,name, mode])
-decode(in_file [, out_file, mode])
-"""
-
-import binascii
-import os
-import sys
-
-__all__ = ["Error", "encode", "decode"]
-
-class Error(Exception):
-    pass
-
-def encode(in_file, out_file, name=None, mode=None):
-    """Uuencode file"""
-    #
-    # If in_file is a pathname open it and change defaults
-    #
-    opened_files = []
-    try:
-        if in_file == '-':
-            in_file = sys.stdin.buffer
-        elif isinstance(in_file, str):
-            if name is None:
-                name = os.path.basename(in_file)
-            if mode is None:
-                try:
-                    mode = os.stat(in_file).st_mode
-                except AttributeError:
-                    pass
-            in_file = open(in_file, 'rb')
-            opened_files.append(in_file)
-        #
-        # Open out_file if it is a pathname
-        #
-        if out_file == '-':
-            out_file = sys.stdout.buffer
-        elif isinstance(out_file, str):
-            out_file = open(out_file, 'wb')
-            opened_files.append(out_file)
-        #
-        # Set defaults for name and mode
-        #
-        if name is None:
-            name = '-'
-        if mode is None:
-            mode = 0o666
-        #
-        # Write the data
-        #
-        out_file.write(('begin %o %s\n' % ((mode & 0o777), name)).encode("ascii"))
-        data = in_file.read(45)
-        while len(data) > 0:
-            out_file.write(binascii.b2a_uu(data))
-            data = in_file.read(45)
-        out_file.write(b' \nend\n')
-    finally:
-        for f in opened_files:
-            f.close()
-
-
-def decode(in_file, out_file=None, mode=None, quiet=False):
-    """Decode uuencoded file"""
-    #
-    # Open the input file, if needed.
-    #
-    opened_files = []
-    if in_file == '-':
-        in_file = sys.stdin.buffer
-    elif isinstance(in_file, str):
-        in_file = open(in_file, 'rb')
-        opened_files.append(in_file)
-
-    try:
-        #
-        # Read until a begin is encountered or we've exhausted the file
-        #
-        while True:
-            hdr = in_file.readline()
-            if not hdr:
-                raise Error('No valid begin line found in input file')
-            if not hdr.startswith(b'begin'):
-                continue
-            hdrfields = hdr.split(b' ', 2)
-            if len(hdrfields) == 3 and hdrfields[0] == b'begin':
-                try:
-                    int(hdrfields[1], 8)
-                    break
-                except ValueError:
-                    pass
-        if out_file is None:
-            # If the filename isn't ASCII, what's up with that?!?
-            out_file = hdrfields[2].rstrip(b' \t\r\n\f').decode("ascii")
-            if os.path.exists(out_file):
-                raise Error('Cannot overwrite existing file: %s' % out_file)
-        if mode is None:
-            mode = int(hdrfields[1], 8)
-        #
-        # Open the output file
-        #
-        if out_file == '-':
-            out_file = sys.stdout.buffer
-        elif isinstance(out_file, str):
-            fp = open(out_file, 'wb')
-            try:
-                os.path.chmod(out_file, mode)
-            except AttributeError:
-                pass
-            out_file = fp
-            opened_files.append(out_file)
-        #
-        # Main decoding loop
-        #
-        s = in_file.readline()
-        while s and s.strip(b' \t\r\n\f') != b'end':
-            try:
-                data = binascii.a2b_uu(s)
-            except binascii.Error as v:
-                # Workaround for broken uuencoders by /Fredrik Lundh
-                nbytes = (((s[0]-32) & 63) * 4 + 5) // 3
-                data = binascii.a2b_uu(s[:nbytes])
-                if not quiet:
-                    sys.stderr.write("Warning: %s\n" % v)
-            out_file.write(data)
-            s = in_file.readline()
-        if not s:
-            raise Error('Truncated input file')
-    finally:
-        for f in opened_files:
-            f.close()
-
-def test():
-    """uuencode/uudecode main program"""
-
-    import optparse
-    parser = optparse.OptionParser(usage='usage: %prog [-d] [-t] [input [output]]')
-    parser.add_option('-d', '--decode', dest='decode', help='Decode (instead of encode)?', default=False, action='store_true')
-    parser.add_option('-t', '--text', dest='text', help='data is text, encoded format unix-compatible text?', default=False, action='store_true')
-
-    (options, args) = parser.parse_args()
-    if len(args) > 2:
-        parser.error('incorrect number of arguments')
-        sys.exit(1)
-
-    # Use the binary streams underlying stdin/stdout
-    input = sys.stdin.buffer
-    output = sys.stdout.buffer
-    if len(args) > 0:
-        input = args[0]
-    if len(args) > 1:
-        output = args[1]
-
-    if options.decode:
-        if options.text:
-            if isinstance(output, str):
-                output = open(output, 'wb')
-            else:
-                print(sys.argv[0], ': cannot do -t to stdout')
-                sys.exit(1)
-        decode(input, output)
-    else:
-        if options.text:
-            if isinstance(input, str):
-                input = open(input, 'rb')
-            else:
-                print(sys.argv[0], ': cannot do -t from stdin')
-                sys.exit(1)
-        encode(input, output)
-
-if __name__ == '__main__':
-    test()