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, 148 deletions

diff --git a/tests/bytecode/pylib-tests/hashlib.py b/tests/bytecode/pylib-tests/hashlib.py
deleted file mode 100644
index 21454c7d30..0000000000
--- a/tests/bytecode/pylib-tests/hashlib.py
+++ /dev/null
@@ -1,148 +0,0 @@
-#  Copyright (C) 2005-2010   Gregory P. Smith (greg@krypto.org)
-#  Licensed to PSF under a Contributor Agreement.
-#
-
-__doc__ = """hashlib module - A common interface to many hash functions.
-
-new(name, data=b'') - returns a new hash object implementing the
-                      given hash function; initializing the hash
-                      using the given binary data.
-
-Named constructor functions are also available, these are faster
-than using new(name):
-
-md5(), sha1(), sha224(), sha256(), sha384(), and sha512()
-
-More algorithms may be available on your platform but the above are guaranteed
-to exist.  See the algorithms_guaranteed and algorithms_available attributes
-to find out what algorithm names can be passed to new().
-
-NOTE: If you want the adler32 or crc32 hash functions they are available in
-the zlib module.
-
-Choose your hash function wisely.  Some have known collision weaknesses.
-sha384 and sha512 will be slow on 32 bit platforms.
-
-Hash objects have these methods:
- - update(arg): Update the hash object with the bytes in arg. Repeated calls
-                are equivalent to a single call with the concatenation of all
-                the arguments.
- - digest():    Return the digest of the bytes passed to the update() method
-                so far.
- - hexdigest(): Like digest() except the digest is returned as a unicode
-                object of double length, containing only hexadecimal digits.
- - copy():      Return a copy (clone) of the hash object. This can be used to
-                efficiently compute the digests of strings that share a common
-                initial substring.
-
-For example, to obtain the digest of the string 'Nobody inspects the
-spammish repetition':
-
-    >>> import hashlib
-    >>> m = hashlib.md5()
-    >>> m.update(b"Nobody inspects")
-    >>> m.update(b" the spammish repetition")
-    >>> m.digest()
-    b'\\xbbd\\x9c\\x83\\xdd\\x1e\\xa5\\xc9\\xd9\\xde\\xc9\\xa1\\x8d\\xf0\\xff\\xe9'
-
-More condensed:
-
-    >>> hashlib.sha224(b"Nobody inspects the spammish repetition").hexdigest()
-    'a4337bc45a8fc544c03f52dc550cd6e1e87021bc896588bd79e901e2'
-
-"""
-
-# This tuple and __get_builtin_constructor() must be modified if a new
-# always available algorithm is added.
-__always_supported = ('md5', 'sha1', 'sha224', 'sha256', 'sha384', 'sha512')
-
-algorithms_guaranteed = set(__always_supported)
-algorithms_available = set(__always_supported)
-
-__all__ = __always_supported + ('new', 'algorithms_guaranteed',
-                                'algorithms_available')
-
-
-def __get_builtin_constructor(name):
-    try:
-        if name in ('SHA1', 'sha1'):
-            import _sha1
-            return _sha1.sha1
-        elif name in ('MD5', 'md5'):
-            import _md5
-            return _md5.md5
-        elif name in ('SHA256', 'sha256', 'SHA224', 'sha224'):
-            import _sha256
-            bs = name[3:]
-            if bs == '256':
-                return _sha256.sha256
-            elif bs == '224':
-                return _sha256.sha224
-        elif name in ('SHA512', 'sha512', 'SHA384', 'sha384'):
-            import _sha512
-            bs = name[3:]
-            if bs == '512':
-                return _sha512.sha512
-            elif bs == '384':
-                return _sha512.sha384
-    except ImportError:
-        pass  # no extension module, this hash is unsupported.
-
-    raise ValueError('unsupported hash type ' + name)
-
-
-def __get_openssl_constructor(name):
-    try:
-        f = getattr(_hashlib, 'openssl_' + name)
-        # Allow the C module to raise ValueError.  The function will be
-        # defined but the hash not actually available thanks to OpenSSL.
-        f()
-        # Use the C function directly (very fast)
-        return f
-    except (AttributeError, ValueError):
-        return __get_builtin_constructor(name)
-
-
-def __py_new(name, data=b''):
-    """new(name, data=b'') - Return a new hashing object using the named algorithm;
-    optionally initialized with data (which must be bytes).
-    """
-    return __get_builtin_constructor(name)(data)
-
-
-def __hash_new(name, data=b''):
-    """new(name, data=b'') - Return a new hashing object using the named algorithm;
-    optionally initialized with data (which must be bytes).
-    """
-    try:
-        return _hashlib.new(name, data)
-    except ValueError:
-        # If the _hashlib module (OpenSSL) doesn't support the named
-        # hash, try using our builtin implementations.
-        # This allows for SHA224/256 and SHA384/512 support even though
-        # the OpenSSL library prior to 0.9.8 doesn't provide them.
-        return __get_builtin_constructor(name)(data)
-
-
-try:
-    import _hashlib
-    new = __hash_new
-    __get_hash = __get_openssl_constructor
-    algorithms_available = algorithms_available.union(
-            _hashlib.openssl_md_meth_names)
-except ImportError:
-    new = __py_new
-    __get_hash = __get_builtin_constructor
-
-for __func_name in __always_supported:
-    # try them all, some may not work due to the OpenSSL
-    # version not supporting that algorithm.
-    try:
-        globals()[__func_name] = __get_hash(__func_name)
-    except ValueError:
-        import logging
-        logging.exception('code for hash %s was not found.', __func_name)
-
-# Cleanup locals()
-del __always_supported, __func_name, __get_hash
-del __py_new, __hash_new, __get_openssl_constructor