re PR libstdc++/61227 ([C++11] Regex [\w] does not work)

2014-05-20  Tim Shen  <timshen91@gmail.com>

	PR libstdc++/61227
	* include/bits/regex_compiler.h
	(_BracketMatcher<>::_M_add_character_class): Add negative character
	class support.
	* include/bits/regex_compiler.tcc (_BracketMatcher<>::_M_apply):
	Likewise.
	* testsuite/28_regex/algorithms/regex_match/ecma/char/quoted_char.cc:
	Add more testcases.

From-SVN: r210630

libstdc++-v3/ChangeLog

+2014-05-20  Tim Shen  <timshen91@gmail.com>
+
+	PR libstdc++/61227
+	* include/bits/regex_compiler.h
+	(_BracketMatcher<>::_M_add_character_class): Add negative character
+	class support.
+	* include/bits/regex_compiler.tcc (_BracketMatcher<>::_M_apply):
+	Likewise.
+	* testsuite/28_regex/algorithms/regex_match/ecma/char/quoted_char.cc:
+	Add more testcases.
+
 2014-05-19  Jonathan Wakely  <jwakely@redhat.com>
 
 	* python/libstdcxx/v6/printers.py: Use Python3 raise syntax.

libstdc++-v3/include/bits/regex_compiler.h

@@ -369,15 +369,19 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 #endif
       }
 
+      // __neg should be true for \D, \S and \W only.
       void
-      _M_add_character_class(const _StringT& __s)
+      _M_add_character_class(const _StringT& __s, bool __neg)
       {
 	auto __mask = _M_traits.lookup_classname(__s.data(),
 						 __s.data() + __s.size(),
 						 __icase);
 	if (__mask == 0)
 	  __throw_regex_error(regex_constants::error_ctype);
+	if (!__neg)
 	  _M_class_set |= __mask;
+	else
+	  _M_neg_class_set.push_back(__mask);
 #ifdef _GLIBCXX_DEBUG
 	_M_is_ready = false;
 #endif
@@ -435,6 +439,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       std::vector<_CharT>                       _M_char_set;
       std::vector<_StringT>                     _M_equiv_set;
       std::vector<pair<_StrTransT, _StrTransT>> _M_range_set;
+      std::vector<_CharClassT>                  _M_neg_class_set;
       _CharClassT                               _M_class_set;
       _TransT                                   _M_translator;
       const _TraitsT&                           _M_traits;

libstdc++-v3/include/bits/regex_compiler.tcc

@@ -397,7 +397,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       _GLIBCXX_DEBUG_ASSERT(_M_value.size() == 1);
       _BracketMatcher<_TraitsT, __icase, __collate> __matcher
 	(_M_ctype.is(_CtypeT::upper, _M_value[0]), _M_traits);
-      __matcher._M_add_character_class(_M_value);
+      __matcher._M_add_character_class(_M_value, false);
       __matcher._M_ready();
       _M_stack.push(_StateSeqT(_M_nfa,
 	_M_nfa._M_insert_matcher(std::move(__matcher))));
@@ -428,7 +428,7 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
       else if (_M_match_token(_ScannerT::_S_token_equiv_class_name))
 	__matcher._M_add_equivalence_class(_M_value);
       else if (_M_match_token(_ScannerT::_S_token_char_class_name))
-	__matcher._M_add_character_class(_M_value);
+	__matcher._M_add_character_class(_M_value, false);
       else if (_M_try_char()) // [a
 	{
 	  auto __ch = _M_value[0];
@@ -451,6 +451,10 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 	    }
 	  __matcher._M_add_char(__ch);
 	}
+      else if (_M_match_token(_ScannerT::_S_token_quoted_class))
+	__matcher._M_add_character_class(_M_value,
+					 _M_ctype.is(_CtypeT::upper,
+						     _M_value[0]));
       else
 	__throw_regex_error(regex_constants::error_brack);
     }
@@ -527,6 +531,15 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
 			     _M_traits.transform_primary(&__ch, &__ch+1))
 		   != _M_equiv_set.end())
 	    __ret = true;
+	  else
+	    {
+	      for (auto& __it : _M_neg_class_set)
+		if (!_M_traits.isctype(__ch, __it))
+		  {
+		    __ret = true;
+		    break;
+		  }
+	    }
 	}
       if (_M_is_non_matching)
 	return !__ret;

libstdc++-v3/testsuite/28_regex/algorithms/regex_match/ecma/char/quoted_char.cc

@@ -44,6 +44,16 @@ test01()
   VERIFY(regex_match_debug("_az", regex("\\w*")));
   VERIFY(regex_match_debug("!@#$%", regex("\\W*")));
   VERIFY(!regex_match_debug("_01234", regex("\\W*")));
+
+  VERIFY(regex_match_debug("01", regex("[\\d]*")));
+  VERIFY(regex_match_debug("asdfjkl", regex("[\\D]*")));
+  VERIFY(!regex_match_debug("asdfjkl0", regex("[\\D]*")));
+  VERIFY(regex_match_debug("\r\t\v\f ", regex("[\\s]*")));
+  VERIFY(regex_match_debug("asdfjkl", regex("[\\S]*")));
+  VERIFY(!regex_match_debug("asdfjkl\r", regex("[\\S]*")));
+  VERIFY(regex_match_debug("_az", regex("[\\w]*")));
+  VERIFY(regex_match_debug("!@#$%", regex("[\\W]*")));
+  VERIFY(!regex_match_debug("_01234", regex("[\\W]*")));
 }
 
 int