eric: comparison DebugClients/Python/coverage/backward.py

-:71f15675e89f
+:7f51ab29a1a2
 """Add things to old Pythons so I can pretend they are newer."""
 # This file does lots of tricky stuff, so disable a bunch of lintisms.
-# pylint: disable-msg=F0401,W0611,W0622
+# pylint: disable=F0401,W0611,W0622
 # F0401: Unable to import blah
 # W0611: Unused import blah
 # W0622: Redefining built-in blah
-import os, sys
+import os, re, sys
 # Python 2.3 doesn't have `set`
 try:
 set = set       # new in 2.4
 except NameError:
 from sets import Set as set
 # Python 2.3 doesn't have `sorted`.
 try:
 sorted = sorted
 except NameError:
 """A 2.3-compatible implementation of `sorted`."""
 lst = list(iterable)
 lst.sort()
 return lst
+# Python 2.3 doesn't have `reversed`.
+try:
+reversed = reversed
+except NameError:
+def reversed(iterable):
+"""A 2.3-compatible implementation of `reversed`."""
+lst = list(iterable)
+return lst[::-1]
+# rpartition is new in 2.5
+try:
+"".rpartition
+except AttributeError:
+def rpartition(s, sep):
+"""Implement s.rpartition(sep) for old Pythons."""
+i = s.rfind(sep)
+if i == -1:
+return ('', '', s)
+else:
+return (s[:i], sep, s[i+len(sep):])
+else:
+def rpartition(s, sep):
+"""A common interface for new Pythons."""
+return s.rpartition(sep)
 # Pythons 2 and 3 differ on where to get StringIO
 try:
 from cStringIO import StringIO
 BytesIO = StringIO
 except ImportError:
 from io import StringIO, BytesIO
 # What's a string called?
 try:
 string_class = basestring
 except NameError:
 string_class = str
 # Where do pickles come from?
 try:
 import cPickle as pickle
 except ImportError:
 import pickle
 # range or xrange?
 try:
 range = xrange
 except NameError:
 range = range
+# A function to iterate listlessly over a dict's items.
+try:
+{}.iteritems
+except AttributeError:
+def iitems(d):
+"""Produce the items from dict `d`."""
+return d.items()
+else:
+def iitems(d):
+"""Produce the items from dict `d`."""
+return d.iteritems()
 # Exec is a statement in Py2, a function in Py3
+if sys.version_info >= (3, 0):
-if sys.hexversion > 0x03000000:
+def exec_code_object(code, global_map):
-def exec_function(source, filename, global_map):
 """A wrapper around exec()."""
-exec(compile(source, filename, "exec"), global_map)
+exec(code, global_map)
 else:
 # OK, this is pretty gross.  In Py2, exec was a statement, but that will
 # be a syntax error if we try to put it in a Py3 file, even if it is never
 # executed.  So hide it inside an evaluated string literal instead.
-eval(compile("""\
+eval(
-def exec_function(source, filename, global_map):
+compile(
-exec compile(source, filename, "exec") in global_map
+"def exec_code_object(code, global_map):\n"
-""",
+"    exec code in global_map\n",
 "<exec_function>", "exec"
-))
+)
+)
-#
+# Reading Python source and interpreting the coding comment is a big deal.
-# eflag: FileType = Python2
+if sys.version_info >= (3, 0):
+# Python 3.2 provides `tokenize.open`, the best way to open source files.
+import tokenize
+try:
+open_source = tokenize.open     # pylint: disable=E1101
+except AttributeError:
+from io import TextIOWrapper
+detect_encoding = tokenize.detect_encoding  # pylint: disable=E1101
+# Copied from the 3.2 stdlib:
+def open_source(fname):
+"""Open a file in read only mode using the encoding detected by
+detect_encoding().
+"""
+buffer = open(fname, 'rb')
+encoding, _ = detect_encoding(buffer.readline)
+buffer.seek(0)
+text = TextIOWrapper(buffer, encoding, line_buffering=True)
+text.mode = 'r'
+return text
+else:
+def open_source(fname):
+"""Open a source file the best way."""
+return open(fname, "rU")
+# Python 3.x is picky about bytes and strings, so provide methods to
+# get them right, and make them no-ops in 2.x
+if sys.version_info >= (3, 0):
+def to_bytes(s):
+"""Convert string `s` to bytes."""
+return s.encode('utf8')
+def to_string(b):
+"""Convert bytes `b` to a string."""
+return b.decode('utf8')
+def binary_bytes(byte_values):
+"""Produce a byte string with the ints from `byte_values`."""
+return bytes(byte_values)
+def byte_to_int(byte_value):
+"""Turn an element of a bytes object into an int."""
+return byte_value
+def bytes_to_ints(bytes_value):
+"""Turn a bytes object into a sequence of ints."""
+# In Py3, iterating bytes gives ints.
+return bytes_value
+else:
+def to_bytes(s):
+"""Convert string `s` to bytes (no-op in 2.x)."""
+return s
+def to_string(b):
+"""Convert bytes `b` to a string (no-op in 2.x)."""
+return b
+def binary_bytes(byte_values):
+"""Produce a byte string with the ints from `byte_values`."""
+return "".join([chr(b) for b in byte_values])
+def byte_to_int(byte_value):
+"""Turn an element of a bytes object into an int."""
+return ord(byte_value)
+def bytes_to_ints(bytes_value):
+"""Turn a bytes object into a sequence of ints."""
+for byte in bytes_value:
+yield ord(byte)
+# Md5 is available in different places.
+try:
+import hashlib
+md5 = hashlib.md5
+except ImportError:
+import md5
+md5 = md5.new

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comparison: DebugClients/Python/coverage/backward.py

DebugClients/Python/coverage/backward.py