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Merged revisions 67463,67572,67576,67628 via svnmerge from 

svn+ssh://pythondev@svn.python.org/python/trunk

........
  r67463 | skip.montanaro | 2008-12-01 02:55:22 +0100 (Mon, 01 Dec 2008) | 1 line

  typo in comment
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  r67572 | georg.brandl | 2008-12-05 10:23:14 +0100 (Fri, 05 Dec 2008) | 2 lines

  #4458: recognize "-" as an argument, not a malformed option in gnu_getopt().
........
  r67576 | georg.brandl | 2008-12-05 13:09:41 +0100 (Fri, 05 Dec 2008) | 2 lines

  #4529: fix parser's validation for try-except-finally statements.
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  r67628 | skip.montanaro | 2008-12-07 03:16:00 +0100 (Sun, 07 Dec 2008) | 1 line

  muffed the default case
........
This commit is contained in:
Georg Brandl 2008-12-07 15:15:22 +00:00
parent 6485f247e4
commit eee3116690
6 changed files with 49 additions and 25 deletions
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2
Lib/getopt.py
View File

@ -130,7 +130,7 @@ def gnu_getopt(args, shortopts, longopts = []):
if args[0][:2] == '--':
opts, args = do_longs(opts, args[0][2:], longopts, args[1:])
elif args[0][:1] == '-':
elif args[0][:1] == '-' and args[0] != '-':
opts, args = do_shorts(opts, args[0][1:], shortopts, args[1:])
else:
if all_options_first:

5
Lib/test/test_getopt.py
View File

@ -124,6 +124,11 @@ class GetoptTests(unittest.TestCase):
self.assertEqual(opts, [('-a', ''), ('-b', '1'),
('--alpha', ''), ('--beta', '2')])
# recognize "-" as an argument
opts, args = getopt.gnu_getopt(['-a', '-', '-b', '-'], 'ab:', [])
self.assertEqual(args, ['-'])
self.assertEqual(opts, [('-a', ''), ('-b', '-')])
# Posix style via +
opts, args = getopt.gnu_getopt(cmdline, '+ab:', ['alpha', 'beta='])
self.assertEqual(opts, [('-a', '')])

10
Lib/test/test_parser.py
View File

@ -193,6 +193,16 @@ class RoundtripLegalSyntaxTestCase(unittest.TestCase):
self.check_suite("with open('x'): pass\n")
self.check_suite("with open('x') as f: pass\n")
def test_try_stmt(self):
self.check_suite("try: pass\nexcept: pass\n")
self.check_suite("try: pass\nfinally: pass\n")
self.check_suite("try: pass\nexcept A: pass\nfinally: pass\n")
self.check_suite("try: pass\nexcept A: pass\nexcept: pass\n"
"finally: pass\n")
self.check_suite("try: pass\nexcept: pass\nelse: pass\n")
self.check_suite("try: pass\nexcept: pass\nelse: pass\n"
"finally: pass\n")
def test_position(self):
# An absolutely minimal test of position information. Better
# tests would be a big project.

9
Misc/NEWS
View File

@ -31,6 +31,15 @@ Library
- Issue #4483: _dbm module now builds on systems with gdbm & gdbm_compat
libs.
- Issue #4529: fix the parser module's validation of try-except-finally
statements.
- Issue #4458: getopt.gnu_getopt() now recognizes a single "-" as an argument,
not a malformed option.
- Added the subprocess.check_output() convenience function to get output
from a subprocess on success or raise an exception on error.
- Issue #4542: On Windows, binascii.crc32 still accepted str as binary input;
the corresponding tests now pass.

46
Modules/parsermodule.c
View File

@ -1862,6 +1862,7 @@ validate_for(node *tree)
/* try_stmt:
* 'try' ':' suite (except_clause ':' suite)+ ['else' ':' suite]
['finally' ':' suite]
* | 'try' ':' suite 'finally' ':' suite
*
*/
@ -1887,35 +1888,34 @@ validate_try(node *tree)
PyErr_Format(parser_error,
"Illegal number of children for try/%s node.", name);
}
/* Skip past except_clause sections: */
/* Handle try/finally statement */
if (res && (TYPE(CHILD(tree, pos)) == NAME) &&
(strcmp(STR(CHILD(tree, pos)), "finally") == 0)) {
res = (validate_numnodes(tree, 6, "try/finally")
&& validate_colon(CHILD(tree, 4))
&& validate_suite(CHILD(tree, 5)));
return (res);
}
/* try/except statement: skip past except_clause sections */
while (res && (TYPE(CHILD(tree, pos)) == except_clause)) {
res = (validate_except_clause(CHILD(tree, pos))
&& validate_colon(CHILD(tree, pos + 1))
&& validate_suite(CHILD(tree, pos + 2)));
pos += 3;
}
if (res && (pos < nch)) {
res = validate_ntype(CHILD(tree, pos), NAME);
if (res && (strcmp(STR(CHILD(tree, pos)), "finally") == 0))
res = (validate_numnodes(tree, 6, "try/finally")
&& validate_colon(CHILD(tree, 4))
&& validate_suite(CHILD(tree, 5)));
else if (res) {
if (nch == (pos + 3)) {
res = ((strcmp(STR(CHILD(tree, pos)), "except") == 0)
|| (strcmp(STR(CHILD(tree, pos)), "else") == 0));
if (!res)
err_string("illegal trailing triple in try statement");
}
else if (nch == (pos + 6)) {
res = (validate_name(CHILD(tree, pos), "except")
&& validate_colon(CHILD(tree, pos + 1))
&& validate_suite(CHILD(tree, pos + 2))
&& validate_name(CHILD(tree, pos + 3), "else"));
}
else
res = validate_numnodes(tree, pos + 3, "try/except");
}
/* skip else clause */
if (res && (TYPE(CHILD(tree, pos)) == NAME) &&
(strcmp(STR(CHILD(tree, pos)), "else") == 0)) {
res = (validate_colon(CHILD(tree, pos + 1))
&& validate_suite(CHILD(tree, pos + 2)));
pos += 3;
}
if (res && pos < nch) {
/* last clause must be a finally */
res = (validate_name(CHILD(tree, pos), "finally")
&& validate_numnodes(tree, pos + 3, "try/except/finally")
&& validate_colon(CHILD(tree, pos + 1))
&& validate_suite(CHILD(tree, pos + 2)));
}
return (res);
}

2
configure.in
View File

@ -1770,7 +1770,7 @@ AC_MSG_RESULT($SHLIBS)
AC_CHECK_LIB(dl, dlopen) # Dynamic linking for SunOS/Solaris and SYSV
AC_CHECK_LIB(dld, shl_load) # Dynamic linking for HP-UX
# only check for sem_ini if thread support is requested
# only check for sem_init if thread support is requested
if test "$with_threads" = "yes" -o -z "$with_threads"; then
AC_SEARCH_LIBS(sem_init, pthread rt posix4) # 'Real Time' functions on Solaris
# posix4 on Solaris 2.6