Issue #15539: Fix a number of bugs in Tools/scripts/pindent.py.
Now pindent.py works with a "with" statement. pindent.py no longer produces improper indentation. pindent.py now works with continued lines broken after "class" or "def" keywords and with continuations at the start of line. Added regression tests for pindent.py. Modernized pindent.py.
This commit is contained in:
Serhiy Storchaka
commit
40ce22edb5
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@ -9,10 +9,13 @@ import sys
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import importlib.machinery
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import unittest
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from unittest import mock
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import shutil
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import subprocess
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import sysconfig
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import tempfile
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import textwrap
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from test import support
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from test.script_helper import assert_python_ok
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from test.script_helper import assert_python_ok, temp_dir
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if not sysconfig.is_python_build():
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# XXX some installers do contain the tools, should we detect that
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@ -36,6 +39,327 @@ class ReindentTests(unittest.TestCase):
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self.assertGreater(err, b'')
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class PindentTests(unittest.TestCase):
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script = os.path.join(scriptsdir, 'pindent.py')
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def assertFileEqual(self, fn1, fn2):
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with open(fn1) as f1, open(fn2) as f2:
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self.assertEqual(f1.readlines(), f2.readlines())
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def pindent(self, source, *args):
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with subprocess.Popen(
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(sys.executable, self.script) + args,
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stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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universal_newlines=True) as proc:
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out, err = proc.communicate(source)
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self.assertIsNone(err)
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return out
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def lstriplines(self, data):
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return '\n'.join(line.lstrip() for line in data.splitlines()) + '\n'
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def test_selftest(self):
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with temp_dir() as directory:
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data_path = os.path.join(directory, '_test.py')
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with open(self.script) as f:
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closed = f.read()
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with open(data_path, 'w') as f:
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f.write(closed)
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rc, out, err = assert_python_ok(self.script, '-d', data_path)
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self.assertEqual(out, b'')
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self.assertEqual(err, b'')
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backup = data_path + '~'
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self.assertTrue(os.path.exists(backup))
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with open(backup) as f:
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self.assertEqual(f.read(), closed)
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with open(data_path) as f:
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clean = f.read()
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compile(clean, '_test.py', 'exec')
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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rc, out, err = assert_python_ok(self.script, '-c', data_path)
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self.assertEqual(out, b'')
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self.assertEqual(err, b'')
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with open(backup) as f:
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self.assertEqual(f.read(), clean)
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with open(data_path) as f:
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self.assertEqual(f.read(), closed)
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broken = self.lstriplines(closed)
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with open(data_path, 'w') as f:
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f.write(broken)
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rc, out, err = assert_python_ok(self.script, '-r', data_path)
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self.assertEqual(out, b'')
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self.assertEqual(err, b'')
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with open(backup) as f:
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self.assertEqual(f.read(), broken)
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with open(data_path) as f:
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indented = f.read()
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compile(indented, '_test.py', 'exec')
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self.assertEqual(self.pindent(broken, '-r'), indented)
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def pindent_test(self, clean, closed):
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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broken = self.lstriplines(closed)
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self.assertEqual(self.pindent(broken, '-r', '-e', '-s', '4'), closed)
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def test_statements(self):
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clean = textwrap.dedent("""\
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if a:
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pass
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if a:
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pass
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else:
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pass
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if a:
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pass
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elif:
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pass
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else:
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pass
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while a:
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break
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while a:
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break
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else:
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pass
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for i in a:
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break
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for i in a:
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break
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else:
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pass
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try:
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pass
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finally:
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pass
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try:
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pass
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except TypeError:
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pass
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except ValueError:
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pass
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else:
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pass
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try:
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pass
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except TypeError:
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pass
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except ValueError:
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pass
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finally:
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pass
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with a:
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pass
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class A:
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pass
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def f():
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pass
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""")
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closed = textwrap.dedent("""\
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if a:
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pass
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# end if
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if a:
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pass
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else:
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pass
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# end if
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if a:
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pass
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elif:
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pass
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else:
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pass
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# end if
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while a:
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break
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# end while
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while a:
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break
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else:
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pass
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# end while
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for i in a:
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break
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# end for
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for i in a:
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break
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else:
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pass
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# end for
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try:
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pass
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finally:
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pass
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# end try
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try:
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pass
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except TypeError:
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pass
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except ValueError:
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pass
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else:
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pass
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# end try
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try:
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pass
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except TypeError:
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pass
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except ValueError:
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pass
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finally:
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pass
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# end try
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with a:
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pass
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# end with
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class A:
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pass
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# end class A
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def f():
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pass
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# end def f
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""")
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self.pindent_test(clean, closed)
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def test_multilevel(self):
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clean = textwrap.dedent("""\
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def foobar(a, b):
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if a == b:
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a = a+1
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elif a < b:
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b = b-1
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if b > a: a = a-1
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else:
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print 'oops!'
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""")
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closed = textwrap.dedent("""\
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def foobar(a, b):
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if a == b:
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a = a+1
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elif a < b:
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b = b-1
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if b > a: a = a-1
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# end if
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else:
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print 'oops!'
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# end if
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# end def foobar
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""")
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self.pindent_test(clean, closed)
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def test_preserve_indents(self):
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clean = textwrap.dedent("""\
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if a:
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if b:
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pass
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""")
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closed = textwrap.dedent("""\
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if a:
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if b:
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pass
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# end if
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# end if
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""")
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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broken = self.lstriplines(closed)
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self.assertEqual(self.pindent(broken, '-r', '-e', '-s', '9'), closed)
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clean = textwrap.dedent("""\
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if a:
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\tif b:
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\t\tpass
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""")
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closed = textwrap.dedent("""\
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if a:
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\tif b:
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\t\tpass
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\t# end if
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# end if
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""")
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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broken = self.lstriplines(closed)
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self.assertEqual(self.pindent(broken, '-r'), closed)
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def test_escaped_newline(self):
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clean = textwrap.dedent("""\
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class\\
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\\
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A:
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def\
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\\
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f:
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pass
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""")
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closed = textwrap.dedent("""\
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class\\
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\\
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A:
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def\
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\\
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f:
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pass
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# end def f
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# end class A
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""")
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self.assertEqual(self.pindent(clean, '-c'), closed)
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self.assertEqual(self.pindent(closed, '-d'), clean)
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def test_empty_line(self):
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clean = textwrap.dedent("""\
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if a:
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pass
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""")
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closed = textwrap.dedent("""\
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if a:
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pass
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# end if
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""")
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self.pindent_test(clean, closed)
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def test_oneline(self):
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clean = textwrap.dedent("""\
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if a: pass
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""")
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closed = textwrap.dedent("""\
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if a: pass
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# end if
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""")
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self.pindent_test(clean, closed)
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class TestSundryScripts(unittest.TestCase):
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# At least make sure the rest don't have syntax errors. When tests are
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# added for a script it should be added to the whitelist below.
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@ -424,6 +424,8 @@ Library
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Tests
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-----
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- Issue #15539: Added regression tests for Tools/scripts/pindent.py.
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- Issue #16925: test_configparser now works with unittest test discovery.
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Patch by Zachary Ware.
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@ -571,6 +573,11 @@ Documentation
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Tools/Demos
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-----------
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- Issue #15539: Fix a number of bugs in Tools/scripts/pindent.py. Now
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pindent.py works with a "with" statement. pindent.py no longer produces
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improper indentation. pindent.py now works with continued lines broken after
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"class" or "def" keywords and with continuations at the start of line.
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- Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka.
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@ -79,8 +79,9 @@
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# Defaults
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STEPSIZE = 8
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TABSIZE = 8
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EXPANDTABS = 0
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EXPANDTABS = False
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import io
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import re
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import sys
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@ -89,7 +90,8 @@ next['if'] = next['elif'] = 'elif', 'else', 'end'
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next['while'] = next['for'] = 'else', 'end'
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next['try'] = 'except', 'finally'
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next['except'] = 'except', 'else', 'finally', 'end'
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next['else'] = next['finally'] = next['def'] = next['class'] = 'end'
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next['else'] = next['finally'] = next['with'] = \
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next['def'] = next['class'] = 'end'
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next['end'] = ()
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start = 'if', 'while', 'for', 'try', 'with', 'def', 'class'
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@ -105,11 +107,11 @@ class PythonIndenter:
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self.expandtabs = expandtabs
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self._write = fpo.write
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self.kwprog = re.compile(
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r'^\s*(?P<kw>[a-z]+)'
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r'(\s+(?P<id>[a-zA-Z_]\w*))?'
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r'^(?:\s|\\\n)*(?P<kw>[a-z]+)'
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r'((?:\s|\\\n)+(?P<id>[a-zA-Z_]\w*))?'
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r'[^\w]')
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self.endprog = re.compile(
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r'^\s*#?\s*end\s+(?P<kw>[a-z]+)'
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r'^(?:\s|\\\n)*#?\s*end\s+(?P<kw>[a-z]+)'
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r'(\s+(?P<id>[a-zA-Z_]\w*))?'
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r'[^\w]')
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self.wsprog = re.compile(r'^[ \t]*')
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@ -125,7 +127,7 @@ class PythonIndenter:
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def readline(self):
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line = self.fpi.readline()
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if line: self.lineno = self.lineno + 1
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if line: self.lineno += 1
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# end if
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return line
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# end def readline
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@ -143,27 +145,24 @@ class PythonIndenter:
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line2 = self.readline()
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if not line2: break
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# end if
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line = line + line2
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line += line2
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# end while
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return line
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# end def getline
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def putline(self, line, indent = None):
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if indent is None:
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self.write(line)
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return
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# end if
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def putline(self, line, indent):
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tabs, spaces = divmod(indent*self.indentsize, self.tabsize)
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i = 0
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m = self.wsprog.match(line)
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if m: i = m.end()
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i = self.wsprog.match(line).end()
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line = line[i:]
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if line[:1] not in ('\n', '\r', ''):
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line = '\t'*tabs + ' '*spaces + line
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# end if
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self.write('\t'*tabs + ' '*spaces + line[i:])
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self.write(line)
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# end def putline
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def reformat(self):
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stack = []
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while 1:
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while True:
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line = self.getline()
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if not line: break # EOF
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# end if
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@ -173,10 +172,9 @@ class PythonIndenter:
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kw2 = m.group('kw')
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if not stack:
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self.error('unexpected end')
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elif stack[-1][0] != kw2:
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elif stack.pop()[0] != kw2:
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self.error('unmatched end')
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# end if
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del stack[-1:]
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self.putline(line, len(stack))
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continue
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# end if
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@ -208,23 +206,23 @@ class PythonIndenter:
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def delete(self):
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begin_counter = 0
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end_counter = 0
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while 1:
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while True:
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line = self.getline()
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if not line: break # EOF
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# end if
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m = self.endprog.match(line)
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if m:
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end_counter = end_counter + 1
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end_counter += 1
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continue
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# end if
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m = self.kwprog.match(line)
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if m:
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kw = m.group('kw')
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if kw in start:
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begin_counter = begin_counter + 1
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begin_counter += 1
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# end if
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# end if
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self.putline(line)
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self.write(line)
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# end while
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if begin_counter - end_counter < 0:
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sys.stderr.write('Warning: input contained more end tags than expected\n')
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@ -234,17 +232,12 @@ class PythonIndenter:
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# end def delete
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def complete(self):
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self.indentsize = 1
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stack = []
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todo = []
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thisid = ''
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current, firstkw, lastkw, topid = 0, '', '', ''
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while 1:
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currentws = thisid = firstkw = lastkw = topid = ''
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while True:
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line = self.getline()
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i = 0
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m = self.wsprog.match(line)
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if m: i = m.end()
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# end if
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i = self.wsprog.match(line).end()
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m = self.endprog.match(line)
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if m:
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thiskw = 'end'
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|
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@ -269,7 +262,9 @@ class PythonIndenter:
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thiskw = ''
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# end if
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# end if
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indent = len(line[:i].expandtabs(self.tabsize))
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indentws = line[:i]
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indent = len(indentws.expandtabs(self.tabsize))
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current = len(currentws.expandtabs(self.tabsize))
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while indent < current:
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if firstkw:
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if topid:
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|
|
@ -278,11 +273,11 @@ class PythonIndenter:
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else:
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s = '# end %s\n' % firstkw
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# end if
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self.putline(s, current)
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self.write(currentws + s)
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firstkw = lastkw = ''
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# end if
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current, firstkw, lastkw, topid = stack[-1]
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del stack[-1]
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currentws, firstkw, lastkw, topid = stack.pop()
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current = len(currentws.expandtabs(self.tabsize))
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# end while
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if indent == current and firstkw:
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if thiskw == 'end':
|
||||
|
|
@ -297,18 +292,18 @@ class PythonIndenter:
|
|||
else:
|
||||
s = '# end %s\n' % firstkw
|
||||
# end if
|
||||
self.putline(s, current)
|
||||
self.write(currentws + s)
|
||||
firstkw = lastkw = topid = ''
|
||||
# end if
|
||||
# end if
|
||||
if indent > current:
|
||||
stack.append((current, firstkw, lastkw, topid))
|
||||
stack.append((currentws, firstkw, lastkw, topid))
|
||||
if thiskw and thiskw not in start:
|
||||
# error
|
||||
thiskw = ''
|
||||
# end if
|
||||
current, firstkw, lastkw, topid = \
|
||||
indent, thiskw, thiskw, thisid
|
||||
currentws, firstkw, lastkw, topid = \
|
||||
indentws, thiskw, thiskw, thisid
|
||||
# end if
|
||||
if thiskw:
|
||||
if thiskw in start:
|
||||
|
|
@ -326,7 +321,6 @@ class PythonIndenter:
|
|||
self.write(line)
|
||||
# end while
|
||||
# end def complete
|
||||
|
||||
# end class PythonIndenter
|
||||
|
||||
# Simplified user interface
|
||||
|
|
@ -352,76 +346,34 @@ def reformat_filter(input = sys.stdin, output = sys.stdout,
|
|||
pi.reformat()
|
||||
# end def reformat_filter
|
||||
|
||||
class StringReader:
|
||||
def __init__(self, buf):
|
||||
self.buf = buf
|
||||
self.pos = 0
|
||||
self.len = len(self.buf)
|
||||
# end def __init__
|
||||
def read(self, n = 0):
|
||||
if n <= 0:
|
||||
n = self.len - self.pos
|
||||
else:
|
||||
n = min(n, self.len - self.pos)
|
||||
# end if
|
||||
r = self.buf[self.pos : self.pos + n]
|
||||
self.pos = self.pos + n
|
||||
return r
|
||||
# end def read
|
||||
def readline(self):
|
||||
i = self.buf.find('\n', self.pos)
|
||||
return self.read(i + 1 - self.pos)
|
||||
# end def readline
|
||||
def readlines(self):
|
||||
lines = []
|
||||
line = self.readline()
|
||||
while line:
|
||||
lines.append(line)
|
||||
line = self.readline()
|
||||
# end while
|
||||
return lines
|
||||
# end def readlines
|
||||
# seek/tell etc. are left as an exercise for the reader
|
||||
# end class StringReader
|
||||
|
||||
class StringWriter:
|
||||
def __init__(self):
|
||||
self.buf = ''
|
||||
# end def __init__
|
||||
def write(self, s):
|
||||
self.buf = self.buf + s
|
||||
# end def write
|
||||
def getvalue(self):
|
||||
return self.buf
|
||||
# end def getvalue
|
||||
# end class StringWriter
|
||||
|
||||
def complete_string(source, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs = EXPANDTABS):
|
||||
input = StringReader(source)
|
||||
output = StringWriter()
|
||||
input = io.StringIO(source)
|
||||
output = io.StringIO()
|
||||
pi = PythonIndenter(input, output, stepsize, tabsize, expandtabs)
|
||||
pi.complete()
|
||||
return output.getvalue()
|
||||
# end def complete_string
|
||||
|
||||
def delete_string(source, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs = EXPANDTABS):
|
||||
input = StringReader(source)
|
||||
output = StringWriter()
|
||||
input = io.StringIO(source)
|
||||
output = io.StringIO()
|
||||
pi = PythonIndenter(input, output, stepsize, tabsize, expandtabs)
|
||||
pi.delete()
|
||||
return output.getvalue()
|
||||
# end def delete_string
|
||||
|
||||
def reformat_string(source, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs = EXPANDTABS):
|
||||
input = StringReader(source)
|
||||
output = StringWriter()
|
||||
input = io.StringIO(source)
|
||||
output = io.StringIO()
|
||||
pi = PythonIndenter(input, output, stepsize, tabsize, expandtabs)
|
||||
pi.reformat()
|
||||
return output.getvalue()
|
||||
# end def reformat_string
|
||||
|
||||
def complete_file(filename, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs = EXPANDTABS):
|
||||
source = open(filename, 'r').read()
|
||||
with open(filename, 'r') as f:
|
||||
source = f.read()
|
||||
# end with
|
||||
result = complete_string(source, stepsize, tabsize, expandtabs)
|
||||
if source == result: return 0
|
||||
# end if
|
||||
|
|
@ -429,14 +381,16 @@ def complete_file(filename, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs =
|
|||
try: os.rename(filename, filename + '~')
|
||||
except os.error: pass
|
||||
# end try
|
||||
f = open(filename, 'w')
|
||||
f.write(result)
|
||||
f.close()
|
||||
with open(filename, 'w') as f:
|
||||
f.write(result)
|
||||
# end with
|
||||
return 1
|
||||
# end def complete_file
|
||||
|
||||
def delete_file(filename, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs = EXPANDTABS):
|
||||
source = open(filename, 'r').read()
|
||||
with open(filename, 'r') as f:
|
||||
source = f.read()
|
||||
# end with
|
||||
result = delete_string(source, stepsize, tabsize, expandtabs)
|
||||
if source == result: return 0
|
||||
# end if
|
||||
|
|
@ -444,14 +398,16 @@ def delete_file(filename, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs = E
|
|||
try: os.rename(filename, filename + '~')
|
||||
except os.error: pass
|
||||
# end try
|
||||
f = open(filename, 'w')
|
||||
f.write(result)
|
||||
f.close()
|
||||
with open(filename, 'w') as f:
|
||||
f.write(result)
|
||||
# end with
|
||||
return 1
|
||||
# end def delete_file
|
||||
|
||||
def reformat_file(filename, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs = EXPANDTABS):
|
||||
source = open(filename, 'r').read()
|
||||
with open(filename, 'r') as f:
|
||||
source = f.read()
|
||||
# end with
|
||||
result = reformat_string(source, stepsize, tabsize, expandtabs)
|
||||
if source == result: return 0
|
||||
# end if
|
||||
|
|
@ -459,9 +415,9 @@ def reformat_file(filename, stepsize = STEPSIZE, tabsize = TABSIZE, expandtabs =
|
|||
try: os.rename(filename, filename + '~')
|
||||
except os.error: pass
|
||||
# end try
|
||||
f = open(filename, 'w')
|
||||
f.write(result)
|
||||
f.close()
|
||||
with open(filename, 'w') as f:
|
||||
f.write(result)
|
||||
# end with
|
||||
return 1
|
||||
# end def reformat_file
|
||||
|
||||
|
|
@ -474,7 +430,7 @@ usage: pindent (-c|-d|-r) [-s stepsize] [-t tabsize] [-e] [file] ...
|
|||
-r : reformat a completed program (use #end directives)
|
||||
-s stepsize: indentation step (default %(STEPSIZE)d)
|
||||
-t tabsize : the worth in spaces of a tab (default %(TABSIZE)d)
|
||||
-e : expand TABs into spaces (defailt OFF)
|
||||
-e : expand TABs into spaces (default OFF)
|
||||
[file] ... : files are changed in place, with backups in file~
|
||||
If no files are specified or a single - is given,
|
||||
the program acts as a filter (reads stdin, writes stdout).
|
||||
|
|
@ -517,7 +473,7 @@ def test():
|
|||
elif o == '-t':
|
||||
tabsize = int(a)
|
||||
elif o == '-e':
|
||||
expandtabs = 1
|
||||
expandtabs = True
|
||||
# end if
|
||||
# end for
|
||||
if not action:
|
||||
|
|
|
|||
Loading…
Reference in New Issue