grep and egrep grammars
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@109534 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/include/regex b/include/regex
index b59a87c..4d132a1 100644
--- a/include/regex
+++ b/include/regex
@@ -2701,6 +2701,12 @@
template <class _ForwardIterator>
_ForwardIterator
__parse_pattern_character(_ForwardIterator __first, _ForwardIterator __last);
+ template <class _ForwardIterator>
+ _ForwardIterator
+ __parse_grep(_ForwardIterator __first, _ForwardIterator __last);
+ template <class _ForwardIterator>
+ _ForwardIterator
+ __parse_egrep(_ForwardIterator __first, _ForwardIterator __last);
void __push_l_anchor() {__left_anchor_ = true;}
void __push_r_anchor();
@@ -2832,8 +2838,10 @@
case awk:
break;
case grep:
+ __parse_grep(__first, __last);
break;
case egrep:
+ __parse_egrep(__first, __last);
break;
default:
throw regex_error(regex_constants::__re_err_grammar);
@@ -4109,6 +4117,68 @@
}
template <class _CharT, class _Traits>
+template <class _ForwardIterator>
+_ForwardIterator
+basic_regex<_CharT, _Traits>::__parse_grep(_ForwardIterator __first,
+ _ForwardIterator __last)
+{
+ __owns_one_state<_CharT>* __sa = __end_;
+ _ForwardIterator __t1 = _STD::find(__first, __last, _CharT('\n'));
+ if (__t1 != __first)
+ __parse_basic_reg_exp(__first, __t1);
+ else
+ __push_empty();
+ __first = __t1;
+ if (__first != __last)
+ ++__first;
+ while (__first != __last)
+ {
+ __t1 = _STD::find(__first, __last, _CharT('\n'));
+ __owns_one_state<_CharT>* __sb = __end_;
+ if (__t1 != __first)
+ __parse_basic_reg_exp(__first, __t1);
+ else
+ __push_empty();
+ __push_alternation(__sa, __sb);
+ __first = __t1;
+ if (__first != __last)
+ ++__first;
+ }
+ return __first;
+}
+
+template <class _CharT, class _Traits>
+template <class _ForwardIterator>
+_ForwardIterator
+basic_regex<_CharT, _Traits>::__parse_egrep(_ForwardIterator __first,
+ _ForwardIterator __last)
+{
+ __owns_one_state<_CharT>* __sa = __end_;
+ _ForwardIterator __t1 = _STD::find(__first, __last, _CharT('\n'));
+ if (__t1 != __first)
+ __parse_extended_reg_exp(__first, __t1);
+ else
+ __push_empty();
+ __first = __t1;
+ if (__first != __last)
+ ++__first;
+ while (__first != __last)
+ {
+ __t1 = _STD::find(__first, __last, _CharT('\n'));
+ __owns_one_state<_CharT>* __sb = __end_;
+ if (__t1 != __first)
+ __parse_extended_reg_exp(__first, __t1);
+ else
+ __push_empty();
+ __push_alternation(__sa, __sb);
+ __first = __t1;
+ if (__first != __last)
+ ++__first;
+ }
+ return __first;
+}
+
+template <class _CharT, class _Traits>
void
basic_regex<_CharT, _Traits>::__push_loop(size_t __min, size_t __max,
__owns_one_state<_CharT>* __s, size_t __mexp_begin, size_t __mexp_end,