diff options
| -rw-r--r-- | Lib/test/test_tools.py | 326 | ||||
| -rw-r--r-- | Misc/NEWS | 7 | ||||
| -rwxr-xr-x | Tools/scripts/pindent.py | 164 |
3 files changed, 392 insertions, 105 deletions
diff --git a/Lib/test/test_tools.py b/Lib/test/test_tools.py index 42816a2..4b33733 100644 --- a/Lib/test/test_tools.py +++ b/Lib/test/test_tools.py @@ -8,10 +8,13 @@ import os import sys import imp import unittest +import shutil +import subprocess import sysconfig import tempfile +import textwrap from test import support -from test.script_helper import assert_python_ok +from test.script_helper import assert_python_ok, temp_dir if not sysconfig.is_python_build(): # XXX some installers do contain the tools, should we detect that @@ -35,6 +38,327 @@ class ReindentTests(unittest.TestCase): self.assertGreater(err, b'') +class PindentTests(unittest.TestCase): + script = os.path.join(scriptsdir, 'pindent.py') + + def assertFileEqual(self, fn1, fn2): + with open(fn1) as f1, open(fn2) as f2: + self.assertEqual(f1.readlines(), f2.readlines()) + + def pindent(self, source, *args): + with subprocess.Popen( + (sys.executable, self.script) + args, + stdin=subprocess.PIPE, stdout=subprocess.PIPE, + universal_newlines=True) as proc: + out, err = proc.communicate(source.encode()) + self.assertIsNone(err) + return out + + def lstriplines(self, data): + return '\n'.join(line.lstrip() for line in data.splitlines()) + '\n' + + def test_selftest(self): + with temp_dir() as directory: + data_path = os.path.join(directory, '_test.py') + with open(self.script) as f: + closed = f.read() + with open(data_path, 'w') as f: + f.write(closed) + + rc, out, err = assert_python_ok(self.script, '-d', data_path) + self.assertEqual(out, b'') + self.assertEqual(err, b'') + backup = data_path + '~' + self.assertTrue(os.path.exists(backup)) + with open(backup) as f: + self.assertEqual(f.read(), closed) + with open(data_path) as f: + clean = f.read() + compile(clean, '_test.py', 'exec') + self.assertEqual(self.pindent(clean, '-c'), closed) + self.assertEqual(self.pindent(closed, '-d'), clean) + + rc, out, err = assert_python_ok(self.script, '-c', data_path) + self.assertEqual(out, b'') + self.assertEqual(err, b'') + with open(backup) as f: + self.assertEqual(f.read(), clean) + with open(data_path) as f: + self.assertEqual(f.read(), closed) + + broken = self.lstriplines(closed) + with open(data_path, 'w') as f: + f.write(broken) + rc, out, err = assert_python_ok(self.script, '-r', data_path) + self.assertEqual(out, b'') + self.assertEqual(err, b'') + with open(backup) as f: + self.assertEqual(f.read(), broken) + with open(data_path) as f: + indented = f.read() + compile(indented, '_test.py', 'exec') + self.assertEqual(self.pindent(broken, '-r'), indented) + + def pindent_test(self, clean, closed): + self.assertEqual(self.pindent(clean, '-c'), closed) + self.assertEqual(self.pindent(closed, '-d'), clean) + broken = self.lstriplines(closed) + self.assertEqual(self.pindent(broken, '-r', '-e', '-s', '4'), closed) + + def test_statements(self): + clean = textwrap.dedent("""\ + if a: + pass + + if a: + pass + else: + pass + + if a: + pass + elif: + pass + else: + pass + + while a: + break + + while a: + break + else: + pass + + for i in a: + break + + for i in a: + break + else: + pass + + try: + pass + finally: + pass + + try: + pass + except TypeError: + pass + except ValueError: + pass + else: + pass + + try: + pass + except TypeError: + pass + except ValueError: + pass + finally: + pass + + with a: + pass + + class A: + pass + + def f(): + pass + """) + + closed = textwrap.dedent("""\ + if a: + pass + # end if + + if a: + pass + else: + pass + # end if + + if a: + pass + elif: + pass + else: + pass + # end if + + while a: + break + # end while + + while a: + break + else: + pass + # end while + + for i in a: + break + # end for + + for i in a: + break + else: + pass + # end for + + try: + pass + finally: + pass + # end try + + try: + pass + except TypeError: + pass + except ValueError: + pass + else: + pass + # end try + + try: + pass + except TypeError: + pass + except ValueError: + pass + finally: + pass + # end try + + with a: + pass + # end with + + class A: + pass + # end class A + + def f(): + pass + # end def f + """) + self.pindent_test(clean, closed) + + def test_multilevel(self): + clean = textwrap.dedent("""\ + def foobar(a, b): + if a == b: + a = a+1 + elif a < b: + b = b-1 + if b > a: a = a-1 + else: + print 'oops!' + """) + closed = textwrap.dedent("""\ + def foobar(a, b): + if a == b: + a = a+1 + elif a < b: + b = b-1 + if b > a: a = a-1 + # end if + else: + print 'oops!' + # end if + # end def foobar + """) + self.pindent_test(clean, closed) + + def test_preserve_indents(self): + clean = textwrap.dedent("""\ + if a: + if b: + pass + """) + closed = textwrap.dedent("""\ + if a: + if b: + pass + # end if + # end if + """) + self.assertEqual(self.pindent(clean, '-c'), closed) + self.assertEqual(self.pindent(closed, '-d'), clean) + broken = self.lstriplines(closed) + self.assertEqual(self.pindent(broken, '-r', '-e', '-s', '9'), closed) + clean = textwrap.dedent("""\ + if a: + \tif b: + \t\tpass + """) + closed = textwrap.dedent("""\ + if a: + \tif b: + \t\tpass + \t# end if + # end if + """) + self.assertEqual(self.pindent(clean, '-c'), closed) + self.assertEqual(self.pindent(closed, '-d'), clean) + broken = self.lstriplines(closed) + self.assertEqual(self.pindent(broken, '-r'), closed) + + def test_escaped_newline(self): + clean = textwrap.dedent("""\ + class\\ + \\ + A: + def\ + \\ + f: + pass + """) + closed = textwrap.dedent("""\ + class\\ + \\ + A: + def\ + \\ + f: + pass + # end def f + # end class A + """) + self.assertEqual(self.pindent(clean, '-c'), closed) + self.assertEqual(self.pindent(closed, '-d'), clean) + + def test_empty_line(self): + clean = textwrap.dedent("""\ + if a: + + pass + """) + closed = textwrap.dedent("""\ + if a: + + pass + # end if + """) + self.pindent_test(clean, closed) + + def test_oneline(self): + clean = textwrap.dedent("""\ + if a: pass + """) + closed = textwrap.dedent("""\ + if a: pass + # end if + """) + self.pindent_test(clean, closed) + + class TestSundryScripts(unittest.TestCase): # At least make sure the rest don't have syntax errors. When tests are # added for a script it should be added to the whitelist below. @@ -770,6 +770,8 @@ Extension Modules Tests ----- +- Issue #15539: Added regression tests for Tools/scripts/pindent.py. + - Issue #15324: Fix regrtest parsing of --fromfile, --match, and --randomize options. @@ -951,6 +953,11 @@ Documentation Tools/Demos ----------- +- 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. + - Issue #15378: Fix Tools/unicode/comparecodecs.py. Patch by Serhiy Storchaka. - Issue #14695: Fix missing support for starred assignments in diff --git a/Tools/scripts/pindent.py b/Tools/scripts/pindent.py index 15b6399..fd04c92 100755 --- a/Tools/scripts/pindent.py +++ b/Tools/scripts/pindent.py @@ -79,8 +79,9 @@ # Defaults STEPSIZE = 8 TABSIZE = 8 -EXPANDTABS = 0 +EXPANDTABS = False +import io import re import sys @@ -89,7 +90,8 @@ next['if'] = next['elif'] = 'elif', 'else', 'end' next['while'] = next['for'] = 'else', 'end' next['try'] = 'except', 'finally' next['except'] = 'except', 'else', 'finally', 'end' -next['else'] = next['finally'] = next['def'] = next['class'] = 'end' +next['else'] = next['finally'] = next['with'] = \ + next['def'] = next['class'] = 'end' next['end'] = () start = 'if', 'while', 'for', 'try', 'with', 'def', 'class' @@ -105,11 +107,11 @@ class PythonIndenter: self.expandtabs = expandtabs self._write = fpo.write self.kwprog = re.compile( - r'^\s*(?P<kw>[a-z]+)' - r'(\s+(?P<id>[a-zA-Z_]\w*))?' + r'^(?:\s|\\\n)*(?P<kw>[a-z]+)' + r'((?:\s|\\\n)+(?P<id>[a-zA-Z_]\w*))?' r'[^\w]') self.endprog = re.compile( - r'^\s*#?\s*end\s+(?P<kw>[a-z]+)' + r'^(?:\s|\\\n)*#?\s*end\s+(?P<kw>[a-z]+)' r'(\s+(?P<id>[a-zA-Z_]\w*))?' r'[^\w]') self.wsprog = re.compile(r'^[ \t]*') @@ -125,7 +127,7 @@ class PythonIndenter: def readline(self): line = self.fpi.readline() - if line: self.lineno = self.lineno + 1 + if line: self.lineno += 1 # end if return line # end def readline @@ -143,27 +145,24 @@ class PythonIndenter: line2 = self.readline() if not line2: break # end if - line = line + line2 + line += line2 # end while return line # end def getline - def putline(self, line, indent = None): - if indent is None: - self.write(line) - return - # end if + def putline(self, line, indent): tabs, spaces = divmod(indent*self.indentsize, self.tabsize) - i = 0 - m = self.wsprog.match(line) - if m: i = m.end() + i = self.wsprog.match(line).end() + line = line[i:] + if line[:1] not in ('\n', '\r', ''): + line = '\t'*tabs + ' '*spaces + line # end if - self.write('\t'*tabs + ' '*spaces + line[i:]) + self.write(line) # end def putline def reformat(self): stack = [] - while 1: + while True: line = self.getline() if not line: break # EOF # end if @@ -173,10 +172,9 @@ class PythonIndenter: kw2 = m.group('kw') if not stack: self.error('unexpected end') - elif stack[-1][0] != kw2: + elif stack.pop()[0] != kw2: self.error('unmatched end') # end if - del stack[-1:] self.putline(line, len(stack)) continue # end if @@ -208,23 +206,23 @@ class PythonIndenter: def delete(self): begin_counter = 0 end_counter = 0 - while 1: + while True: line = self.getline() if not line: break # EOF # end if m = self.endprog.match(line) if m: - end_counter = end_counter + 1 + end_counter += 1 continue # end if m = self.kwprog.match(line) if m: kw = m.group('kw') if kw in start: - begin_counter = begin_counter + 1 + begin_counter += 1 # end if # end if - self.putline(line) + self.write(line) # end while if begin_counter - end_counter < 0: sys.stderr.write('Warning: input contained more end tags than expected\n') @@ -234,17 +232,12 @@ class PythonIndenter: # end def delete def complete(self): - self.indentsize = 1 stack = [] todo = [] - thisid = '' - current, firstkw, lastkw, topid = 0, '', '', '' - while 1: + currentws = thisid = firstkw = lastkw = topid = '' + while True: line = self.getline() - i = 0 - m = self.wsprog.match(line) - if m: i = m.end() - # end if + i = self.wsprog.match(line).end() m = self.endprog.match(line) if m: thiskw = 'end' @@ -269,7 +262,9 @@ class PythonIndenter: thiskw = '' # end if # end if - indent = len(line[:i].expandtabs(self.tabsize)) + indentws = line[:i] + indent = len(indentws.expandtabs(self.tabsize)) + current = len(currentws.expandtabs(self.tabsize)) while indent < current: if firstkw: if topid: @@ -278,11 +273,11 @@ class PythonIndenter: else: s = '# end %s\n' % firstkw # end if - self.putline(s, current) + self.write(currentws + s) firstkw = lastkw = '' # end if - current, firstkw, lastkw, topid = stack[-1] - del stack[-1] + currentws, firstkw, lastkw, topid = stack.pop() + current = len(currentws.expandtabs(self.tabsize)) # end while if indent == current and firstkw: 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: |