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, 66 deletions

diff --git a/tests/bytecode/pylib-tests/nturl2path.py b/tests/bytecode/pylib-tests/nturl2path.py
deleted file mode 100644
index e0c2f2352..000000000
--- a/tests/bytecode/pylib-tests/nturl2path.py
+++ /dev/null
@@ -1,66 +0,0 @@
-"""Convert a NT pathname to a file URL and vice versa."""
-
-def url2pathname(url):
-    """OS-specific conversion from a relative URL of the 'file' scheme
-    to a file system path; not recommended for general use."""
-    # e.g.
-    # ///C|/foo/bar/spam.foo
-    # becomes
-    # C:\foo\bar\spam.foo
-    import string, urllib.parse
-    # Windows itself uses ":" even in URLs.
-    url = url.replace(':', '|')
-    if '|' not in url:
-        # No drive specifier, just convert slashes
-        if url[:4] == '////':
-            # path is something like ////host/path/on/remote/host
-            # convert this to \\host\path\on\remote\host
-            # (notice halving of slashes at the start of the path)
-            url = url[2:]
-        components = url.split('/')
-        # make sure not to convert quoted slashes :-)
-        return urllib.parse.unquote('\\'.join(components))
-    comp = url.split('|')
-    if len(comp) != 2 or comp[0][-1] not in string.ascii_letters:
-        error = 'Bad URL: ' + url
-        raise IOError(error)
-    drive = comp[0][-1].upper()
-    components = comp[1].split('/')
-    path = drive + ':'
-    for comp in components:
-        if comp:
-            path = path + '\\' + urllib.parse.unquote(comp)
-    # Issue #11474 - handing url such as |c/|
-    if path.endswith(':') and url.endswith('/'):
-        path += '\\'
-    return path
-
-def pathname2url(p):
-    """OS-specific conversion from a file system path to a relative URL
-    of the 'file' scheme; not recommended for general use."""
-    # e.g.
-    # C:\foo\bar\spam.foo
-    # becomes
-    # ///C|/foo/bar/spam.foo
-    import urllib.parse
-    if ':' not in p:
-        # No drive specifier, just convert slashes and quote the name
-        if p[:2] == '\\\\':
-        # path is something like \\host\path\on\remote\host
-        # convert this to ////host/path/on/remote/host
-        # (notice doubling of slashes at the start of the path)
-            p = '\\\\' + p
-        components = p.split('\\')
-        return urllib.parse.quote('/'.join(components))
-    comp = p.split(':')
-    if len(comp) != 2 or len(comp[0]) > 1:
-        error = 'Bad path: ' + p
-        raise IOError(error)
-
-    drive = urllib.parse.quote(comp[0].upper())
-    components = comp[1].split('\\')
-    path = '///' + drive + ':'
-    for comp in components:
-        if comp:
-            path = path + '/' + urllib.parse.quote(comp)
-    return path