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slightly faster regexp for replacing c/c++ comments

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This commit is contained in:
Thomas Nagy 2013-05-09 11:00:31 +02:00
parent b0bae3baa1
commit 7af8b2f268
1 changed files with 4 additions and 6 deletions
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10
waflib/Tools/c_preproc.py
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@ -84,9 +84,7 @@ re_pragma_once = re.compile('^\s*once\s*', re.IGNORECASE)
re_nl = re.compile('\\\\\r*\n', re.MULTILINE)
"""Match newlines"""
re_cpp = re.compile(
r"""(/\*[^*]*\*+([^/*][^*]*\*+)*/)|//[^\n]*|("(\\.|[^"\\])*"|'(\\.|[^'\\])*'|.[^/"'\\]*)""",
re.MULTILINE)
re_cpp = re.compile(r'//.*?$|/\*.*?\*/|\'(?:\\.|[^\\\'])*\'|"(?:\\.|[^\\"])*"', re.DOTALL | re.MULTILINE )
"""Filter C/C++ comments"""
trig_def = [('??'+a, b) for a, b in zip("=-/!'()<>", r'#~\|^[]{}')]
@ -138,10 +136,10 @@ skipped = 's'
def repl(m):
"""Replace function used with :py:attr:`waflib.Tools.c_preproc.re_cpp`"""
s = m.group(1)
if s:
s = m.group(0)
if s.startswith('/'):
return ' '
return m.group(3) or ''
return s
def filter_comments(filename):
"""