[Python-checkins] cpython (3.2): - Issue #11250: Back port fix from 3.3 branch, so that 2to3 can handle files
barry.warsaw
python-checkins at python.org
Fri Oct 7 21:27:04 CEST 2011
http://hg.python.org/cpython/rev/6e0e9237d8e8
changeset: 72801:6e0e9237d8e8
branch: 3.2
parent: 72777:5a4018570a59
user: Barry Warsaw <barry at python.org>
date: Fri Oct 07 14:44:49 2011 -0400
summary:
- Issue #11250: Back port fix from 3.3 branch, so that 2to3 can handle files
with line feeds. This was ported from the sandbox to the 3.3 branch, but
didn't make it into 3.2.
- Re-enable lib2to3's test_parser.py tests, though with an expected failure
(see issue 13125).
files:
Lib/lib2to3/patcomp.py | 3 +-
Lib/lib2to3/pgen2/driver.py | 11 +----
Lib/lib2to3/tests/test_parser.py | 38 +++++++++++++------
Lib/test/test_lib2to3.py | 3 +-
Misc/NEWS | 7 +++
5 files changed, 39 insertions(+), 23 deletions(-)
diff --git a/Lib/lib2to3/patcomp.py b/Lib/lib2to3/patcomp.py
--- a/Lib/lib2to3/patcomp.py
+++ b/Lib/lib2to3/patcomp.py
@@ -11,6 +11,7 @@
__author__ = "Guido van Rossum <guido at python.org>"
# Python imports
+import io
import os
# Fairly local imports
@@ -32,7 +33,7 @@
def tokenize_wrapper(input):
"""Tokenizes a string suppressing significant whitespace."""
skip = set((token.NEWLINE, token.INDENT, token.DEDENT))
- tokens = tokenize.generate_tokens(driver.generate_lines(input).__next__)
+ tokens = tokenize.generate_tokens(io.StringIO(input).readline)
for quintuple in tokens:
type, value, start, end, line_text = quintuple
if type not in skip:
diff --git a/Lib/lib2to3/pgen2/driver.py b/Lib/lib2to3/pgen2/driver.py
--- a/Lib/lib2to3/pgen2/driver.py
+++ b/Lib/lib2to3/pgen2/driver.py
@@ -17,6 +17,7 @@
# Python imports
import codecs
+import io
import os
import logging
import sys
@@ -101,18 +102,10 @@
def parse_string(self, text, debug=False):
"""Parse a string and return the syntax tree."""
- tokens = tokenize.generate_tokens(generate_lines(text).__next__)
+ tokens = tokenize.generate_tokens(io.StringIO(text).readline)
return self.parse_tokens(tokens, debug)
-def generate_lines(text):
- """Generator that behaves like readline without using StringIO."""
- for line in text.splitlines(True):
- yield line
- while True:
- yield ""
-
-
def load_grammar(gt="Grammar.txt", gp=None,
save=True, force=False, logger=None):
"""Load the grammar (maybe from a pickle)."""
diff --git a/Lib/lib2to3/tests/test_parser.py b/Lib/lib2to3/tests/test_parser.py
--- a/Lib/lib2to3/tests/test_parser.py
+++ b/Lib/lib2to3/tests/test_parser.py
@@ -14,10 +14,21 @@
# Python imports
import os
+import unittest
# Local imports
from lib2to3.pgen2 import tokenize
from ..pgen2.parse import ParseError
+from lib2to3.pygram import python_symbols as syms
+
+
+class TestDriver(support.TestCase):
+
+ def test_formfeed(self):
+ s = """print 1\n\x0Cprint 2\n"""
+ t = driver.parse_string(s)
+ self.assertEqual(t.children[0].children[0].type, syms.print_stmt)
+ self.assertEqual(t.children[1].children[0].type, syms.print_stmt)
class GrammarTest(support.TestCase):
@@ -147,19 +158,22 @@
"""A cut-down version of pytree_idempotency.py."""
+ # Issue 13125
+ @unittest.expectedFailure
def test_all_project_files(self):
for filepath in support.all_project_files():
with open(filepath, "rb") as fp:
encoding = tokenize.detect_encoding(fp.readline)[0]
self.assertTrue(encoding is not None,
"can't detect encoding for %s" % filepath)
- with open(filepath, "r") as fp:
+ with open(filepath, "r", encoding=encoding) as fp:
source = fp.read()
- source = source.decode(encoding)
- tree = driver.parse_string(source)
+ try:
+ tree = driver.parse_string(source)
+ except ParseError as err:
+ print('ParseError on file', filepath, err)
+ continue
new = str(tree)
- if encoding:
- new = new.encode(encoding)
if diff(filepath, new):
self.fail("Idempotency failed: %s" % filepath)
@@ -202,14 +216,14 @@
self.validate(s)
-def diff(fn, result, encoding):
- f = open("@", "w")
+def diff(fn, result):
try:
- f.write(result.encode(encoding))
- finally:
- f.close()
- try:
+ with open('@', 'w') as f:
+ f.write(str(result))
fn = fn.replace('"', '\\"')
return os.system('diff -u "%s" @' % fn)
finally:
- os.remove("@")
+ try:
+ os.remove("@")
+ except OSError:
+ pass
diff --git a/Lib/test/test_lib2to3.py b/Lib/test/test_lib2to3.py
--- a/Lib/test/test_lib2to3.py
+++ b/Lib/test/test_lib2to3.py
@@ -1,6 +1,7 @@
# Skipping test_parser and test_all_fixers
# because of running
from lib2to3.tests import (test_fixers, test_pytree, test_util, test_refactor,
+ test_parser,
test_main as test_main_)
import unittest
from test.support import run_unittest
@@ -9,7 +10,7 @@
tests = unittest.TestSuite()
loader = unittest.TestLoader()
for m in (test_fixers, test_pytree,test_util, test_refactor,
- test_main_):
+ test_parser, test_main_):
tests.addTests(loader.loadTestsFromModule(m))
return tests
diff --git a/Misc/NEWS b/Misc/NEWS
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -39,6 +39,10 @@
Library
-------
+- Issue #11250: Back port fix from 3.3 branch, so that 2to3 can handle files
+ with line feeds. This was ported from the sandbox to the 3.3 branch, but
+ didn't make it into 3.2.
+
- Issue #7367: Fix pkgutil.walk_paths to skip directories whose
contents cannot be read.
@@ -101,6 +105,9 @@
- Issue #12821: Fix test_fcntl failures on OpenBSD 5.
+- Re-enable lib2to3's test_parser.py tests, though with an expected failure
+ (see issue 13125).
+
Extension Modules
-----------------
--
Repository URL: http://hg.python.org/cpython
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