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, 437 deletions

diff --git a/tests/bytecode/pylib-tests/socket.py b/tests/bytecode/pylib-tests/socket.py
deleted file mode 100644
index 39ed325410..0000000000
--- a/tests/bytecode/pylib-tests/socket.py
+++ /dev/null
@@ -1,437 +0,0 @@
-# Wrapper module for _socket, providing some additional facilities
-# implemented in Python.
-
-"""\
-This module provides socket operations and some related functions.
-On Unix, it supports IP (Internet Protocol) and Unix domain sockets.
-On other systems, it only supports IP. Functions specific for a
-socket are available as methods of the socket object.
-
-Functions:
-
-socket() -- create a new socket object
-socketpair() -- create a pair of new socket objects [*]
-fromfd() -- create a socket object from an open file descriptor [*]
-fromshare() -- create a socket object from data received from socket.share() [*]
-gethostname() -- return the current hostname
-gethostbyname() -- map a hostname to its IP number
-gethostbyaddr() -- map an IP number or hostname to DNS info
-getservbyname() -- map a service name and a protocol name to a port number
-getprotobyname() -- map a protocol name (e.g. 'tcp') to a number
-ntohs(), ntohl() -- convert 16, 32 bit int from network to host byte order
-htons(), htonl() -- convert 16, 32 bit int from host to network byte order
-inet_aton() -- convert IP addr string (123.45.67.89) to 32-bit packed format
-inet_ntoa() -- convert 32-bit packed format IP to string (123.45.67.89)
-socket.getdefaulttimeout() -- get the default timeout value
-socket.setdefaulttimeout() -- set the default timeout value
-create_connection() -- connects to an address, with an optional timeout and
-                       optional source address.
-
- [*] not available on all platforms!
-
-Special objects:
-
-SocketType -- type object for socket objects
-error -- exception raised for I/O errors
-has_ipv6 -- boolean value indicating if IPv6 is supported
-
-Integer constants:
-
-AF_INET, AF_UNIX -- socket domains (first argument to socket() call)
-SOCK_STREAM, SOCK_DGRAM, SOCK_RAW -- socket types (second argument)
-
-Many other constants may be defined; these may be used in calls to
-the setsockopt() and getsockopt() methods.
-"""
-
-import _socket
-from _socket import *
-
-import os, sys, io
-
-try:
-    import errno
-except ImportError:
-    errno = None
-EBADF = getattr(errno, 'EBADF', 9)
-EAGAIN = getattr(errno, 'EAGAIN', 11)
-EWOULDBLOCK = getattr(errno, 'EWOULDBLOCK', 11)
-
-__all__ = ["getfqdn", "create_connection"]
-__all__.extend(os._get_exports_list(_socket))
-
-
-_realsocket = socket
-
-# WSA error codes
-if sys.platform.lower().startswith("win"):
-    errorTab = {}
-    errorTab[10004] = "The operation was interrupted."
-    errorTab[10009] = "A bad file handle was passed."
-    errorTab[10013] = "Permission denied."
-    errorTab[10014] = "A fault occurred on the network??" # WSAEFAULT
-    errorTab[10022] = "An invalid operation was attempted."
-    errorTab[10035] = "The socket operation would block"
-    errorTab[10036] = "A blocking operation is already in progress."
-    errorTab[10048] = "The network address is in use."
-    errorTab[10054] = "The connection has been reset."
-    errorTab[10058] = "The network has been shut down."
-    errorTab[10060] = "The operation timed out."
-    errorTab[10061] = "Connection refused."
-    errorTab[10063] = "The name is too long."
-    errorTab[10064] = "The host is down."
-    errorTab[10065] = "The host is unreachable."
-    __all__.append("errorTab")
-
-
-class socket(_socket.socket):
-
-    """A subclass of _socket.socket adding the makefile() method."""
-
-    __slots__ = ["__weakref__", "_io_refs", "_closed"]
-
-    def __init__(self, family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None):
-        _socket.socket.__init__(self, family, type, proto, fileno)
-        self._io_refs = 0
-        self._closed = False
-
-    def __enter__(self):
-        return self
-
-    def __exit__(self, *args):
-        if not self._closed:
-            self.close()
-
-    def __repr__(self):
-        """Wrap __repr__() to reveal the real class name."""
-        s = _socket.socket.__repr__(self)
-        if s.startswith("<socket object"):
-            s = "<%s.%s%s%s" % (self.__class__.__module__,
-                                self.__class__.__name__,
-                                getattr(self, '_closed', False) and " [closed] " or "",
-                                s[7:])
-        return s
-
-    def __getstate__(self):
-        raise TypeError("Cannot serialize socket object")
-
-    def dup(self):
-        """dup() -> socket object
-
-        Return a new socket object connected to the same system resource.
-        """
-        fd = dup(self.fileno())
-        sock = self.__class__(self.family, self.type, self.proto, fileno=fd)
-        sock.settimeout(self.gettimeout())
-        return sock
-
-    def accept(self):
-        """accept() -> (socket object, address info)
-
-        Wait for an incoming connection.  Return a new socket
-        representing the connection, and the address of the client.
-        For IP sockets, the address info is a pair (hostaddr, port).
-        """
-        fd, addr = self._accept()
-        sock = socket(self.family, self.type, self.proto, fileno=fd)
-        # Issue #7995: if no default timeout is set and the listening
-        # socket had a (non-zero) timeout, force the new socket in blocking
-        # mode to override platform-specific socket flags inheritance.
-        if getdefaulttimeout() is None and self.gettimeout():
-            sock.setblocking(True)
-        return sock, addr
-
-    def makefile(self, mode="r", buffering=None, *,
-                 encoding=None, errors=None, newline=None):
-        """makefile(...) -> an I/O stream connected to the socket
-
-        The arguments are as for io.open() after the filename,
-        except the only mode characters supported are 'r', 'w' and 'b'.
-        The semantics are similar too.  (XXX refactor to share code?)
-        """
-        for c in mode:
-            if c not in {a+"r", "w", "b"}:
-                raise ValueError("invalid mode %r (only r, w, b allowed)")
-        writing = "w" in mode
-        reading = "r" in mode or not writing
-        assert reading or writing
-        binary = "b" in mode
-        rawmode = ""
-        if reading:
-            rawmode += "r"
-        if writing:
-            rawmode += "w"
-        raw = SocketIO(self, rawmode)
-        self._io_refs += 1
-        if buffering is None:
-            buffering = -1
-        if buffering < 0:
-            buffering = io.DEFAULT_BUFFER_SIZE
-        if buffering == 0:
-            if not binary:
-                raise ValueError("unbuffered streams must be binary")
-            return raw
-        if reading and writing:
-            buffer = io.BufferedRWPair(raw, raw, buffering)
-        elif reading:
-            buffer = io.BufferedReader(raw, buffering)
-        else:
-            assert writing
-            buffer = io.BufferedWriter(raw, buffering)
-        if binary:
-            return buffer
-        text = io.TextIOWrapper(buffer, encoding, errors, newline)
-        text.mode = mode
-        return text
-
-    def _decref_socketios(self):
-        if self._io_refs > 0:
-            self._io_refs -= 1
-        if self._closed:
-            self.close()
-
-    def _real_close(self, _ss=_socket.socket):
-        # This function should not reference any globals. See issue #808164.
-        _ss.close(self)
-
-    def close(self):
-        # This function should not reference any globals. See issue #808164.
-        self._closed = True
-        if self._io_refs <= 0:
-            self._real_close()
-
-    def detach(self):
-        """detach() -> file descriptor
-
-        Close the socket object without closing the underlying file descriptor.
-        The object cannot be used after this call, but the file descriptor
-        can be reused for other purposes.  The file descriptor is returned.
-        """
-        self._closed = True
-        return super().detach()
-
-def fromfd(fd, family, type, proto=0):
-    """ fromfd(fd, family, type[, proto]) -> socket object
-
-    Create a socket object from a duplicate of the given file
-    descriptor.  The remaining arguments are the same as for socket().
-    """
-    nfd = dup(fd)
-    return socket(family, type, proto, nfd)
-
-if hasattr(_socket.socket, "share"):
-    def fromshare(info):
-        """ fromshare(info) -> socket object
-
-        Create a socket object from a the bytes object returned by
-        socket.share(pid).
-        """
-        return socket(0, 0, 0, info)
-
-if hasattr(_socket, "socketpair"):
-
-    def socketpair(family=None, type=SOCK_STREAM, proto=0):
-        """socketpair([family[, type[, proto]]]) -> (socket object, socket object)
-
-        Create a pair of socket objects from the sockets returned by the platform
-        socketpair() function.
-        The arguments are the same as for socket() except the default family is
-        AF_UNIX if defined on the platform; otherwise, the default is AF_INET.
-        """
-        if family is None:
-            try:
-                family = AF_UNIX
-            except NameError:
-                family = AF_INET
-        a, b = _socket.socketpair(family, type, proto)
-        a = socket(family, type, proto, a.detach())
-        b = socket(family, type, proto, b.detach())
-        return a, b
-
-
-_blocking_errnos = { EAGAIN, EWOULDBLOCK }
-
-class SocketIO(io.RawIOBase):
-
-    """Raw I/O implementation for stream sockets.
-
-    This class supports the makefile() method on sockets.  It provides
-    the raw I/O interface on top of a socket object.
-    """
-
-    # One might wonder why not let FileIO do the job instead.  There are two
-    # main reasons why FileIO is not adapted:
-    # - it wouldn't work under Windows (where you can't used read() and
-    #   write() on a socket handle)
-    # - it wouldn't work with socket timeouts (FileIO would ignore the
-    #   timeout and consider the socket non-blocking)
-
-    # XXX More docs
-
-    def __init__(self, sock, mode):
-        if mode not in ("r", "w", "rw", "rb", "wb", "rwb"):
-            raise ValueError("invalid mode: %r" % mode)
-        io.RawIOBase.__init__(self)
-        self._sock = sock
-        if "b" not in mode:
-            mode += "b"
-        self._mode = mode
-        self._reading = "r" in mode
-        self._writing = "w" in mode
-        self._timeout_occurred = False
-
-    def readinto(self, b):
-        """Read up to len(b) bytes into the writable buffer *b* and return
-        the number of bytes read.  If the socket is non-blocking and no bytes
-        are available, None is returned.
-
-        If *b* is non-empty, a 0 return value indicates that the connection
-        was shutdown at the other end.
-        """
-        self._checkClosed()
-        self._checkReadable()
-        if self._timeout_occurred:
-            raise IOError("cannot read from timed out object")
-        while True:
-            try:
-                return self._sock.recv_into(b)
-            except timeout:
-                self._timeout_occurred = True
-                raise
-            except InterruptedError:
-                continue
-            except error as e:
-                if e.args[0] in _blocking_errnos:
-                    return None
-                raise
-
-    def write(self, b):
-        """Write the given bytes or bytearray object *b* to the socket
-        and return the number of bytes written.  This can be less than
-        len(b) if not all data could be written.  If the socket is
-        non-blocking and no bytes could be written None is returned.
-        """
-        self._checkClosed()
-        self._checkWritable()
-        try:
-            return self._sock.send(b)
-        except error as e:
-            # XXX what about EINTR?
-            if e.args[0] in _blocking_errnos:
-                return None
-            raise
-
-    def readable(self):
-        """True if the SocketIO is open for reading.
-        """
-        if self.closed:
-            raise ValueError("I/O operation on closed socket.")
-        return self._reading
-
-    def writable(self):
-        """True if the SocketIO is open for writing.
-        """
-        if self.closed:
-            raise ValueError("I/O operation on closed socket.")
-        return self._writing
-
-    def seekable(self):
-        """True if the SocketIO is open for seeking.
-        """
-        if self.closed:
-            raise ValueError("I/O operation on closed socket.")
-        return super().seekable()
-
-    def fileno(self):
-        """Return the file descriptor of the underlying socket.
-        """
-        self._checkClosed()
-        return self._sock.fileno()
-
-    @property
-    def name(self):
-        if not self.closed:
-            return self.fileno()
-        else:
-            return -1
-
-    @property
-    def mode(self):
-        return self._mode
-
-    def close(self):
-        """Close the SocketIO object.  This doesn't close the underlying
-        socket, except if all references to it have disappeared.
-        """
-        if self.closed:
-            return
-        io.RawIOBase.close(self)
-        self._sock._decref_socketios()
-        self._sock = None
-
-
-def getfqdn(name=''):
-    """Get fully qualified domain name from name.
-
-    An empty argument is interpreted as meaning the local host.
-
-    First the hostname returned by gethostbyaddr() is checked, then
-    possibly existing aliases. In case no FQDN is available, hostname
-    from gethostname() is returned.
-    """
-    name = name.strip()
-    if not name or name == '0.0.0.0':
-        name = gethostname()
-    try:
-        hostname, aliases, ipaddrs = gethostbyaddr(name)
-    except error:
-        pass
-    else:
-        aliases.insert(0, hostname)
-        for name in aliases:
-            if '.' in name:
-                break
-        else:
-            name = hostname
-    return name
-
-
-_GLOBAL_DEFAULT_TIMEOUT = object()
-
-def create_connection(address, timeout=_GLOBAL_DEFAULT_TIMEOUT,
-                      source_address=None):
-    """Connect to *address* and return the socket object.
-
-    Convenience function.  Connect to *address* (a 2-tuple ``(host,
-    port)``) and return the socket object.  Passing the optional
-    *timeout* parameter will set the timeout on the socket instance
-    before attempting to connect.  If no *timeout* is supplied, the
-    global default timeout setting returned by :func:`getdefaulttimeout`
-    is used.  If *source_address* is set it must be a tuple of (host, port)
-    for the socket to bind as a source address before making the connection.
-    An host of '' or port 0 tells the OS to use the default.
-    """
-
-    host, port = address
-    err = None
-    for res in getaddrinfo(host, port, 0, SOCK_STREAM):
-        af, socktype, proto, canonname, sa = res
-        sock = None
-        try:
-            sock = socket(af, socktype, proto)
-            if timeout is not _GLOBAL_DEFAULT_TIMEOUT:
-                sock.settimeout(timeout)
-            if source_address:
-                sock.bind(source_address)
-            sock.connect(sa)
-            return sock
-
-        except error as _:
-            err = _
-            if sock is not None:
-                sock.close()
-
-    if err is not None:
-        raise err
-    else:
-        raise error("getaddrinfo returns an empty list")