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Merged revisions 79911,79916-79917,80018,80418,80572-80573,80635-80639,80668,80922 via svnmerge from 

svn+ssh://pythondev@svn.python.org/sandbox/trunk/2to3/lib2to3

........
  r79911 | benjamin.peterson | 2010-04-09 15:38:53 -0500 (Fri, 09 Apr 2010) | 1 line

  use absolute import
........
  r79916 | benjamin.peterson | 2010-04-09 16:05:21 -0500 (Fri, 09 Apr 2010) | 1 line

  generalize detection of __future__ imports and attach them to the tree
........
  r79917 | benjamin.peterson | 2010-04-09 16:11:44 -0500 (Fri, 09 Apr 2010) | 1 line

  don't try to 'fix' relative imports when absolute_import is enabled #8858
........
  r80018 | benjamin.peterson | 2010-04-12 16:12:12 -0500 (Mon, 12 Apr 2010) | 4 lines

  prevent diffs from being mangled is multiprocess mode #6409

  Patch by George Boutsioukis.
........
  r80418 | benjamin.peterson | 2010-04-23 16:00:03 -0500 (Fri, 23 Apr 2010) | 1 line

  remove unhelpful description
........
  r80572 | benjamin.peterson | 2010-04-27 20:33:54 -0500 (Tue, 27 Apr 2010) | 1 line

  use unicode literals
........
  r80573 | jeffrey.yasskin | 2010-04-27 23:08:27 -0500 (Tue, 27 Apr 2010) | 6 lines

  Don't transform imports that are already relative.  2to3 turned
    from . import refactor
  into
    from .. import refactor
  which broke the transformation of 2to3 itself.
........
  r80635 | benjamin.peterson | 2010-04-29 16:02:23 -0500 (Thu, 29 Apr 2010) | 1 line

  remove imports
........
  r80636 | benjamin.peterson | 2010-04-29 16:02:41 -0500 (Thu, 29 Apr 2010) | 1 line

  unicode literal
........
  r80637 | benjamin.peterson | 2010-04-29 16:03:42 -0500 (Thu, 29 Apr 2010) | 1 line

  must pass a string to Number
........
  r80638 | benjamin.peterson | 2010-04-29 16:05:34 -0500 (Thu, 29 Apr 2010) | 1 line

  unicode literals
........
  r80639 | benjamin.peterson | 2010-04-29 16:06:09 -0500 (Thu, 29 Apr 2010) | 1 line

  pass string to Number
........
  r80668 | jeffrey.yasskin | 2010-04-30 18:02:47 -0500 (Fri, 30 Apr 2010) | 4 lines

  Make 2to3 run under Python 2.5 so that the benchmark suite at
  http://hg.python.org/benchmarks/ can use it and still run on implementations
  that haven't gotten to 2.6 yet.  Fixes issue 8566.
........
  r80922 | benjamin.peterson | 2010-05-07 11:06:25 -0500 (Fri, 07 May 2010) | 1 line

  prevent xrange transformation from wrapping range calls it produces in list
........
This commit is contained in:
Benjamin Peterson 2010-05-07 18:58:23 +00:00
parent ae4dde0858
commit 5dfad9dc9a
15 changed files with 167 additions and 91 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
Lib/lib2to3/fixes/fix_import.py
View File

@ -43,7 +43,13 @@ class FixImport(fixer_base.BaseFix):
import_name< 'import' imp=any >
"""
def start_tree(self, tree, name):
super(FixImport, self).start_tree(tree, name)
self.skip = "absolute_import" in tree.future_features
def transform(self, node, results):
if self.skip:
return
imp = results['imp']
if node.type == syms.import_from:
@ -71,19 +77,22 @@ class FixImport(fixer_base.BaseFix):
self.warning(node, "absolute and local imports together")
return
new = FromImport('.', [imp])
new = FromImport(u".", [imp])
new.prefix = node.prefix
return new
def probably_a_local_import(self, imp_name):
imp_name = imp_name.split('.', 1)[0]
if imp_name.startswith(u"."):
# Relative imports are certainly not local imports.
return False
imp_name = imp_name.split(u".", 1)[0]
base_path = dirname(self.filename)
base_path = join(base_path, imp_name)
# If there is no __init__.py next to the file its not in a package
# so can't be a relative import.
if not exists(join(dirname(base_path), '__init__.py')):
if not exists(join(dirname(base_path), "__init__.py")):
return False
for ext in ['.py', sep, '.pyc', '.so', '.sl', '.pyd']:
for ext in [".py", sep, ".pyc", ".so", ".sl", ".pyd"]:
if exists(base_path + ext):
return True
return False

6
Lib/lib2to3/fixes/fix_operator.py
View File

@ -14,10 +14,10 @@ class FixOperator(fixer_base.BaseFix):
func = "'(' func=any ')'"
PATTERN = """
power< module='operator'
trailer< '.' {methods} > trailer< {func} > >
trailer< '.' %(methods)s > trailer< %(func)s > >
|
power< {methods} trailer< {func} > >
""".format(methods=methods, func=func)
power< %(methods)s trailer< %(func)s > >
""" % dict(methods=methods, func=func)
def transform(self, node, results):
method = results["method"][0]

5
Lib/lib2to3/fixes/fix_reduce.py
View File

@ -7,9 +7,8 @@ Makes sure reduce() is imported from the functools module if reduce is
used in that module.
"""
from .. import pytree
from .. import fixer_base
from ..fixer_util import Name, Attr, touch_import
from lib2to3 import fixer_base
from lib2to3.fixer_util import touch_import

4
Lib/lib2to3/fixes/fix_sys_exc.py
View File

@ -13,14 +13,14 @@ from ..fixer_util import Attr, Call, Name, Number, Subscript, Node, syms
class FixSysExc(fixer_base.BaseFix):
# This order matches the ordering of sys.exc_info().
exc_info = ["exc_type", "exc_value", "exc_traceback"]
exc_info = [u"exc_type", u"exc_value", u"exc_traceback"]
PATTERN = """
power< 'sys' trailer< dot='.' attribute=(%s) > >
""" % '|'.join("'%s'" % e for e in exc_info)
def transform(self, node, results):
sys_attr = results["attribute"][0]
index = Number(self.exc_info.index(sys_attr.value))
index = Number(unicode(self.exc_info.index(sys_attr.value)))
call = Call(Name(u"exc_info"), prefix=sys_attr.prefix)
attr = Attr(Name(u"sys"), call)

4
Lib/lib2to3/fixes/fix_tuple_params.py
View File

@ -54,7 +54,7 @@ class FixTupleParams(fixer_base.BaseFix):
end = Newline()
else:
start = 0
indent = "; "
indent = u"; "
end = pytree.Leaf(token.INDENT, u"")
# We need access to self for new_name(), and making this a method
@ -154,7 +154,7 @@ def map_to_index(param_list, prefix=[], d=None):
if d is None:
d = {}
for i, obj in enumerate(param_list):
trailer = [Subscript(Number(i))]
trailer = [Subscript(Number(unicode(i)))]
if isinstance(obj, list):
map_to_index(obj, trailer, d=d)
else:

12
Lib/lib2to3/fixes/fix_xrange.py
View File

@ -17,6 +17,13 @@ class FixXrange(fixer_base.BaseFix):
rest=any* >
"""
def start_tree(self, tree, filename):
super(FixXrange, self).start_tree(tree, filename)
self.transformed_xranges = set()
def finish_tree(self, tree, filename):
self.transformed_xranges = None
def transform(self, node, results):
name = results["name"]
if name.value == u"xrange":
@ -29,9 +36,12 @@ class FixXrange(fixer_base.BaseFix):
def transform_xrange(self, node, results):
name = results["name"]
name.replace(Name(u"range", prefix=name.prefix))
# This prevents the new range call from being wrapped in a list later.
self.transformed_xranges.add(id(node))
def transform_range(self, node, results):
if not self.in_special_context(node):
if (id(node) not in self.transformed_xranges and
not self.in_special_context(node)):
range_call = Call(Name(u"range"), [results["args"].clone()])
# Encase the range call in list().
list_call = Call(Name(u"list"), [range_call],

14
Lib/lib2to3/main.py
View File

@ -2,6 +2,8 @@
Main program for 2to3.
"""
from __future__ import with_statement
import sys
import os
import difflib
@ -62,8 +64,14 @@ class StdoutRefactoringTool(refactor.MultiprocessRefactoringTool):
if self.show_diffs:
diff_lines = diff_texts(old, new, filename)
try:
for line in diff_lines:
print line
if self.output_lock is not None:
with self.output_lock:
for line in diff_lines:
print line
sys.stdout.flush()
else:
for line in diff_lines:
print line
except UnicodeEncodeError:
warn("couldn't encode %s's diff for your terminal" %
(filename,))
@ -95,7 +103,7 @@ def main(fixer_pkg, args=None):
parser.add_option("-x", "--nofix", action="append", default=[],
help="Prevent a fixer from being run.")
parser.add_option("-l", "--list-fixes", action="store_true",
help="List available transformations (fixes/fix_*.py)")
help="List available transformations")
parser.add_option("-p", "--print-function", action="store_true",
help="Modify the grammar so that print() is a function")
parser.add_option("-v", "--verbose", action="store_true",

2
Lib/lib2to3/patcomp.py
View File

@ -57,7 +57,7 @@ class PatternCompiler(object):
tokens = tokenize_wrapper(input)
try:
root = self.driver.parse_tokens(tokens, debug=debug)
except parse.ParseError as e:
except parse.ParseError, e:
raise PatternSyntaxError(str(e))
return self.compile_node(root)

9
Lib/lib2to3/pgen2/tokenize.py
View File

@ -38,6 +38,13 @@ __all__ = [x for x in dir(token) if x[0] != '_'] + ["tokenize",
"generate_tokens", "untokenize"]
del token
try:
bytes
except NameError:
# Support bytes type in Python <= 2.5, so 2to3 turns itself into
# valid Python 3 code.
bytes = str
def group(*choices): return '(' + '|'.join(choices) + ')'
def any(*choices): return group(*choices) + '*'
def maybe(*choices): return group(*choices) + '?'
@ -267,7 +274,7 @@ def detect_encoding(readline):
try:
return readline()
except StopIteration:
return b''
return bytes()
def find_cookie(line):
try:

15
Lib/lib2to3/pytree.py
View File

@ -289,8 +289,7 @@ class Node(Base):
for node in child.post_order():
yield node
@property
def prefix(self):
def _prefix_getter(self):
"""
The whitespace and comments preceding this node in the input.
"""
@ -298,11 +297,12 @@ class Node(Base):
return ""
return self.children[0].prefix
@prefix.setter
def prefix(self, prefix):
def _prefix_setter(self, prefix):
if self.children:
self.children[0].prefix = prefix
prefix = property(_prefix_getter, _prefix_setter)
def set_child(self, i, child):
"""
Equivalent to 'node.children[i] = child'. This method also sets the
@ -390,18 +390,17 @@ class Leaf(Base):
"""Return a pre-order iterator for the tree."""
yield self
@property
def prefix(self):
def _prefix_getter(self):
"""
The whitespace and comments preceding this token in the input.
"""
return self._prefix
@prefix.setter
def prefix(self, prefix):
def _prefix_setter(self, prefix):
self.changed()
self._prefix = prefix
prefix = property(_prefix_getter, _prefix_setter)
def convert(gr, raw_node):
"""

24
Lib/lib2to3/refactor.py
View File

@ -8,6 +8,8 @@ recursively descend down directories. Imported as a module, this
provides infrastructure to write your own refactoring tool.
"""
from __future__ import with_statement
__author__ = "Guido van Rossum <guido@python.org>"
@ -122,13 +124,14 @@ else:
_to_system_newlines = _identity
def _detect_future_print(source):
def _detect_future_features(source):
have_docstring = False
gen = tokenize.generate_tokens(StringIO.StringIO(source).readline)
def advance():
tok = next(gen)
tok = gen.next()
return tok[0], tok[1]
ignore = frozenset((token.NEWLINE, tokenize.NL, token.COMMENT))
features = set()
try:
while True:
tp, value = advance()
@ -140,26 +143,25 @@ def _detect_future_print(source):
have_docstring = True
elif tp == token.NAME and value == u"from":
tp, value = advance()
if tp != token.NAME and value != u"__future__":
if tp != token.NAME or value != u"__future__":
break
tp, value = advance()
if tp != token.NAME and value != u"import":
if tp != token.NAME or value != u"import":
break
tp, value = advance()
if tp == token.OP and value == u"(":
tp, value = advance()
while tp == token.NAME:
if value == u"print_function":
return True
features.add(value)
tp, value = advance()
if tp != token.OP and value != u",":
if tp != token.OP or value != u",":
break
tp, value = advance()
else:
break
except StopIteration:
pass
return False
return frozenset(features)
class FixerError(Exception):
@ -341,7 +343,8 @@ class RefactoringTool(object):
An AST corresponding to the refactored input stream; None if
there were errors during the parse.
"""
if _detect_future_print(data):
features = _detect_future_features(data)
if "print_function" in features:
self.driver.grammar = pygram.python_grammar_no_print_statement
try:
tree = self.driver.parse_string(data)
@ -351,6 +354,7 @@ class RefactoringTool(object):
return
finally:
self.driver.grammar = self.grammar
tree.future_features = features
self.log_debug("Refactoring %s", name)
self.refactor_tree(tree, name)
return tree
@ -605,6 +609,7 @@ class MultiprocessRefactoringTool(RefactoringTool):
def __init__(self, *args, **kwargs):
super(MultiprocessRefactoringTool, self).__init__(*args, **kwargs)
self.queue = None
self.output_lock = None
def refactor(self, items, write=False, doctests_only=False,
num_processes=1):
@ -618,6 +623,7 @@ class MultiprocessRefactoringTool(RefactoringTool):
if self.queue is not None:
raise RuntimeError("already doing multiple processes")
self.queue = multiprocessing.JoinableQueue()
self.output_lock = multiprocessing.Lock()
processes = [multiprocessing.Process(target=self._child)
for i in xrange(num_processes)]
try:

23
Lib/lib2to3/tests/test_fixers.py
View File

@ -1497,6 +1497,17 @@ class Test_xrange(FixerTestCase):
for call in fixer_util.consuming_calls:
self.unchanged("a = %s(range(10))" % call)
class Test_xrange_with_reduce(FixerTestCase):
def setUp(self):
super(Test_xrange_with_reduce, self).setUp(["xrange", "reduce"])
def test_double_transform(self):
b = """reduce(x, xrange(5))"""
a = """from functools import reduce
reduce(x, range(5))"""
self.check(b, a)
class Test_raw_input(FixerTestCase):
fixer = "raw_input"
@ -3679,7 +3690,7 @@ class Test_import(FixerTestCase):
self.files_checked.append(name)
return self.always_exists or (name in self.present_files)
from ..fixes import fix_import
from lib2to3.fixes import fix_import
fix_import.exists = fake_exists
def tearDown(self):
@ -3722,6 +3733,12 @@ class Test_import(FixerTestCase):
self.present_files = set(["bar.py"])
self.unchanged(s)
def test_with_absolute_import_enabled(self):
s = "from __future__ import absolute_import\nimport bar"
self.always_exists = False
self.present_files = set(["__init__.py", "bar.py"])
self.unchanged(s)
def test_in_package(self):
b = "import bar"
a = "from . import bar"
@ -3736,6 +3753,10 @@ class Test_import(FixerTestCase):
self.present_files = set(["__init__.py", "bar" + os.path.sep])
self.check(b, a)
def test_already_relative_import(self):
s = "from . import bar"
self.unchanged(s)
def test_comments_and_indent(self):
b = "import bar # Foo"
a = "from . import bar # Foo"

10
Lib/lib2to3/tests/test_parser.py
View File

@ -6,13 +6,14 @@ parts of the grammar we've changed, we also make sure we can parse the
test_grammar.py files from both Python 2 and Python 3.
"""
from __future__ import with_statement
# Testing imports
from . import support
from .support import driver, test_dir
# Python imports
import os
import io
import sys
# Local imports
@ -156,8 +157,9 @@ class TestParserIdempotency(support.TestCase):
encoding = tokenize.detect_encoding(fp.readline)[0]
self.assertTrue(encoding is not None,
"can't detect encoding for %s" % filepath)
with io.open(filepath, "r", encoding=encoding) as fp:
with open(filepath, "r") as fp:
source = fp.read()
source = source.decode(encoding)
tree = driver.parse_string(source)
new = unicode(tree)
if diff(filepath, new, encoding):
@ -203,9 +205,9 @@ class TestLiterals(GrammarTest):
def diff(fn, result, encoding):
f = io.open("@", "w", encoding=encoding)
f = open("@", "w")
try:
f.write(result)
f.write(result.encode(encoding))
finally:
f.close()
try:

33
Lib/lib2to3/tests/test_pytree.py
View File

@ -9,6 +9,9 @@ more helpful than printing of (the first line of) the docstring,
especially when debugging a test.
"""
from __future__ import with_statement
import sys
import warnings
# Testing imports
@ -28,20 +31,22 @@ class TestNodes(support.TestCase):
"""Unit tests for nodes (Base, Leaf, Node)."""
def test_deprecated_prefix_methods(self):
l = pytree.Leaf(100, "foo")
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always", DeprecationWarning)
self.assertEqual(l.get_prefix(), "")
l.set_prefix("hi")
self.assertEqual(l.prefix, "hi")
self.assertEqual(len(w), 2)
for warning in w:
self.assertTrue(warning.category is DeprecationWarning)
self.assertEqual(str(w[0].message), "get_prefix() is deprecated; " \
"use the prefix property")
self.assertEqual(str(w[1].message), "set_prefix() is deprecated; " \
"use the prefix property")
if sys.version_info >= (2,6):
# warnings.catch_warnings is new in 2.6.
def test_deprecated_prefix_methods(self):
l = pytree.Leaf(100, "foo")
with warnings.catch_warnings(record=True) as w:
warnings.simplefilter("always", DeprecationWarning)
self.assertEqual(l.get_prefix(), "")
l.set_prefix("hi")
self.assertEqual(l.prefix, "hi")
self.assertEqual(len(w), 2)
for warning in w:
self.assertTrue(warning.category is DeprecationWarning)
self.assertEqual(str(w[0].message), "get_prefix() is deprecated; " \
"use the prefix property")
self.assertEqual(str(w[1].message), "set_prefix() is deprecated; " \
"use the prefix property")
def test_instantiate_base(self):
if __debug__:

80
Lib/lib2to3/tests/test_refactor.py
View File

@ -2,6 +2,8 @@
Unit tests for refactor.py.
"""
from __future__ import with_statement
import sys
import os
import codecs
@ -61,42 +63,50 @@ class TestRefactoringTool(unittest.TestCase):
self.assertEqual(full_names,
["myfixes.fix_" + name for name in contents])
def test_detect_future_print(self):
run = refactor._detect_future_print
self.assertFalse(run(""))
self.assertTrue(run("from __future__ import print_function"))
self.assertFalse(run("from __future__ import generators"))
self.assertFalse(run("from __future__ import generators, feature"))
input = "from __future__ import generators, print_function"
self.assertTrue(run(input))
input ="from __future__ import print_function, generators"
self.assertTrue(run(input))
input = "from __future__ import (print_function,)"
self.assertTrue(run(input))
input = "from __future__ import (generators, print_function)"
self.assertTrue(run(input))
input = "from __future__ import (generators, nested_scopes)"
self.assertFalse(run(input))
input = """from __future__ import generators
def test_detect_future_features(self):
run = refactor._detect_future_features
fs = frozenset
empty = fs()
self.assertEqual(run(""), empty)
self.assertEqual(run("from __future__ import print_function"),
fs(("print_function",)))
self.assertEqual(run("from __future__ import generators"),
fs(("generators",)))
self.assertEqual(run("from __future__ import generators, feature"),
fs(("generators", "feature")))
inp = "from __future__ import generators, print_function"
self.assertEqual(run(inp), fs(("generators", "print_function")))
inp ="from __future__ import print_function, generators"
self.assertEqual(run(inp), fs(("print_function", "generators")))
inp = "from __future__ import (print_function,)"
self.assertEqual(run(inp), fs(("print_function",)))
inp = "from __future__ import (generators, print_function)"
self.assertEqual(run(inp), fs(("generators", "print_function")))
inp = "from __future__ import (generators, nested_scopes)"
self.assertEqual(run(inp), fs(("generators", "nested_scopes")))
inp = """from __future__ import generators
from __future__ import print_function"""
self.assertTrue(run(input))
self.assertFalse(run("from"))
self.assertFalse(run("from 4"))
self.assertFalse(run("from x"))
self.assertFalse(run("from x 5"))
self.assertFalse(run("from x im"))
self.assertFalse(run("from x import"))
self.assertFalse(run("from x import 4"))
input = "'docstring'\nfrom __future__ import print_function"
self.assertTrue(run(input))
input = "'docstring'\n'somng'\nfrom __future__ import print_function"
self.assertFalse(run(input))
input = "# comment\nfrom __future__ import print_function"
self.assertTrue(run(input))
input = "# comment\n'doc'\nfrom __future__ import print_function"
self.assertTrue(run(input))
input = "class x: pass\nfrom __future__ import print_function"
self.assertFalse(run(input))
self.assertEqual(run(inp), fs(("generators", "print_function")))
invalid = ("from",
"from 4",
"from x",
"from x 5",
"from x im",
"from x import",
"from x import 4",
)
for inp in invalid:
self.assertEqual(run(inp), empty)
inp = "'docstring'\nfrom __future__ import print_function"
self.assertEqual(run(inp), fs(("print_function",)))
inp = "'docstring'\n'somng'\nfrom __future__ import print_function"
self.assertEqual(run(inp), empty)
inp = "# comment\nfrom __future__ import print_function"
self.assertEqual(run(inp), fs(("print_function",)))
inp = "# comment\n'doc'\nfrom __future__ import print_function"
self.assertEqual(run(inp), fs(("print_function",)))
inp = "class x: pass\nfrom __future__ import print_function"
self.assertEqual(run(inp), empty)
def test_get_headnode_dict(self):
class NoneFix(fixer_base.BaseFix):