Jonathan Sauer found a bug in the way ^ was handled
git-svn-id: https://llvm.org/svn/llvm-project/libcxx/trunk@128350 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -1264,6 +1264,7 @@ struct __state
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vector<pair<size_t, const _CharT*> > __loop_data_;
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const __node<_CharT>* __node_;
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regex_constants::match_flag_type __flags_;
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bool __at_first_;
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_LIBCPP_INLINE_VISIBILITY
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__state()
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@ -1890,6 +1891,40 @@ __word_boundary<_CharT, _Traits>::__exec(__state& __s) const
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}
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}
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// __l_anchor
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template <class _CharT>
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class __l_anchor
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: public __owns_one_state<_CharT>
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{
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typedef __owns_one_state<_CharT> base;
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public:
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typedef _STD::__state<_CharT> __state;
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_LIBCPP_INLINE_VISIBILITY
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__l_anchor(__node<_CharT>* __s)
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: base(__s) {}
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virtual void __exec(__state&) const;
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};
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template <class _CharT>
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void
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__l_anchor<_CharT>::__exec(__state& __s) const
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{
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if (__s.__at_first_ && __s.__current_ == __s.__first_)
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{
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__s.__do_ = __state::__accept_but_not_consume;
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__s.__node_ = this->first();
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}
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else
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{
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__s.__do_ = __state::__reject;
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__s.__node_ = nullptr;
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}
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}
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// __r_anchor
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template <class _CharT>
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@ -2394,7 +2429,6 @@ private:
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int __open_count_;
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shared_ptr<__empty_state<_CharT> > __start_;
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__owns_one_state<_CharT>* __end_;
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bool __left_anchor_;
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typedef _STD::__state<_CharT> __state;
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typedef _STD::__node<_CharT> __node;
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@ -2416,17 +2450,17 @@ public:
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_LIBCPP_INLINE_VISIBILITY
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basic_regex()
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: __flags_(), __marked_count_(0), __loop_count_(0), __open_count_(0),
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__end_(0), __left_anchor_(false)
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__end_(0)
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{}
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_LIBCPP_INLINE_VISIBILITY
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explicit basic_regex(const value_type* __p, flag_type __f = regex_constants::ECMAScript)
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: __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
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__end_(0), __left_anchor_(false)
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__end_(0)
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{__parse(__p, __p + __traits_.length(__p));}
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_LIBCPP_INLINE_VISIBILITY
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basic_regex(const value_type* __p, size_t __len, flag_type __f)
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: __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
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__end_(0), __left_anchor_(false)
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__end_(0)
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{__parse(__p, __p + __len);}
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// basic_regex(const basic_regex&) = default;
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// basic_regex(basic_regex&&) = default;
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@ -2435,20 +2469,20 @@ public:
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explicit basic_regex(const basic_string<value_type, _ST, _SA>& __p,
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flag_type __f = regex_constants::ECMAScript)
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: __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
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__end_(0), __left_anchor_(false)
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__end_(0)
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{__parse(__p.begin(), __p.end());}
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template <class _ForwardIterator>
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_LIBCPP_INLINE_VISIBILITY
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basic_regex(_ForwardIterator __first, _ForwardIterator __last,
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flag_type __f = regex_constants::ECMAScript)
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: __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
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__end_(0), __left_anchor_(false)
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__end_(0)
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{__parse(__first, __last);}
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_LIBCPP_INLINE_VISIBILITY
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basic_regex(initializer_list<value_type> __il,
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flag_type __f = regex_constants::ECMAScript)
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: __flags_(__f), __marked_count_(0), __loop_count_(0), __open_count_(0),
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__end_(0), __left_anchor_(false)
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__end_(0)
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{__parse(__il.begin(), __il.end());}
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// ~basic_regex() = default;
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@ -2506,7 +2540,6 @@ private:
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__loop_count_ = 0;
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__open_count_ = 0;
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__end_ = nullptr;
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__left_anchor_ = false;
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}
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public:
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@ -2694,7 +2727,7 @@ private:
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basic_string<_CharT>* __str = nullptr);
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_LIBCPP_INLINE_VISIBILITY
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void __push_l_anchor() {__left_anchor_ = true;}
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void __push_l_anchor();
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void __push_r_anchor();
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void __push_match_any();
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void __push_match_any_but_newline();
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@ -2732,22 +2765,22 @@ private:
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bool
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__match_at_start(const _CharT* __first, const _CharT* __last,
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const;
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regex_constants::match_flag_type __flags, bool) const;
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template <class _Allocator>
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bool
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__match_at_start_ecma(const _CharT* __first, const _CharT* __last,
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const;
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regex_constants::match_flag_type __flags, bool) const;
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template <class _Allocator>
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bool
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__match_at_start_posix_nosubs(const _CharT* __first, const _CharT* __last,
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const;
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regex_constants::match_flag_type __flags, bool) const;
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template <class _Allocator>
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bool
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__match_at_start_posix_subs(const _CharT* __first, const _CharT* __last,
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const;
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regex_constants::match_flag_type __flags, bool) const;
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template <class _B, class _A, class _C, class _T>
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friend
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@ -2809,7 +2842,6 @@ basic_regex<_CharT, _Traits>::swap(basic_regex& __r)
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swap(__open_count_, __r.__open_count_);
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swap(__start_, __r.__start_);
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swap(__end_, __r.__end_);
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swap(__left_anchor_, __r.__left_anchor_);
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}
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template <class _CharT, class _Traits>
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@ -2850,7 +2882,9 @@ __lookahead<_CharT, _Traits>::__exec(__state& __s) const
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match_results<const _CharT*> __m;
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__m.__init(1 + __exp_.mark_count(), __s.__current_, __s.__last_);
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bool __matched = __exp_.__match_at_start_ecma(__s.__current_, __s.__last_,
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__m, __s.__flags_);
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__m,
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__s.__flags_ | regex_constants::match_continuous,
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true);
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if (__matched != __invert_)
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{
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__s.__do_ = __state::__accept_but_not_consume;
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@ -4087,7 +4121,6 @@ basic_regex<_CharT, _Traits>::__parse_assertion(_ForwardIterator __first,
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basic_regex __exp;
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__exp.__flags_ = __flags_;
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__temp = __exp.__parse(++__temp, __last);
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__exp.__push_l_anchor();
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__push_lookahead(_STD::move(__exp), false);
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#ifndef _LIBCPP_NO_EXCEPTIONS
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if (__temp == __last || *__temp != ')')
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@ -4101,7 +4134,6 @@ basic_regex<_CharT, _Traits>::__parse_assertion(_ForwardIterator __first,
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basic_regex __exp;
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__exp.__flags_ = __flags_;
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__temp = __exp.__parse(++__temp, __last);
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__exp.__push_l_anchor();
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__push_lookahead(_STD::move(__exp), true);
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#ifndef _LIBCPP_NO_EXCEPTIONS
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if (__temp == __last || *__temp != ')')
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@ -4576,6 +4608,14 @@ basic_regex<_CharT, _Traits>::__push_end_marked_subexpression(unsigned __sub)
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}
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}
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template <class _CharT, class _Traits>
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void
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basic_regex<_CharT, _Traits>::__push_l_anchor()
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{
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__end_->first() = new __l_anchor<_CharT>(__end_->first());
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__end_ = static_cast<__owns_one_state<_CharT>*>(__end_->first());
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}
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template <class _CharT, class _Traits>
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void
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basic_regex<_CharT, _Traits>::__push_r_anchor()
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@ -5441,7 +5481,7 @@ bool
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basic_regex<_CharT, _Traits>::__match_at_start_ecma(
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const _CharT* __first, const _CharT* __last,
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const
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regex_constants::match_flag_type __flags, bool __at_first) const
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{
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vector<__state> __states;
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ptrdiff_t __j = 0;
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@ -5458,6 +5498,7 @@ basic_regex<_CharT, _Traits>::__match_at_start_ecma(
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__states.back().__loop_data_.resize(__loop_count());
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__states.back().__node_ = __st;
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__states.back().__flags_ = __flags;
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__states.back().__at_first_ = __at_first;
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bool __matched = false;
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do
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{
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@ -5506,7 +5547,7 @@ bool
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basic_regex<_CharT, _Traits>::__match_at_start_posix_nosubs(
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const _CharT* __first, const _CharT* __last,
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const
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regex_constants::match_flag_type __flags, bool __at_first) const
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{
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deque<__state> __states;
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ptrdiff_t __highest_j = 0;
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@ -5522,6 +5563,7 @@ basic_regex<_CharT, _Traits>::__match_at_start_posix_nosubs(
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__states.back().__loop_data_.resize(__loop_count());
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__states.back().__node_ = __st;
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__states.back().__flags_ = __flags;
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__states.back().__at_first_ = __at_first;
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bool __matched = false;
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do
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{
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@ -5583,7 +5625,7 @@ bool
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basic_regex<_CharT, _Traits>::__match_at_start_posix_subs(
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const _CharT* __first, const _CharT* __last,
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const
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regex_constants::match_flag_type __flags, bool __at_first) const
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{
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vector<__state> __states;
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__state __best_state;
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@ -5602,6 +5644,7 @@ basic_regex<_CharT, _Traits>::__match_at_start_posix_subs(
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__states.back().__loop_data_.resize(__loop_count());
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__states.back().__node_ = __st;
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__states.back().__flags_ = __flags;
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__states.back().__at_first_ = __at_first;
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const _CharT* __current = __first;
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bool __matched = false;
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do
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@ -5667,13 +5710,13 @@ bool
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basic_regex<_CharT, _Traits>::__match_at_start(
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const _CharT* __first, const _CharT* __last,
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const
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regex_constants::match_flag_type __flags, bool __at_first) const
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{
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if ((__flags_ & 0x1F0) == ECMAScript)
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return __match_at_start_ecma(__first, __last, __m, __flags);
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return __match_at_start_ecma(__first, __last, __m, __flags, __at_first);
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if (mark_count() == 0)
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return __match_at_start_posix_nosubs(__first, __last, __m, __flags);
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return __match_at_start_posix_subs(__first, __last, __m, __flags);
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return __match_at_start_posix_nosubs(__first, __last, __m, __flags, __at_first);
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return __match_at_start_posix_subs(__first, __last, __m, __flags, __at_first);
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}
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template <class _CharT, class _Traits>
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@ -5684,11 +5727,9 @@ basic_regex<_CharT, _Traits>::__search(
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match_results<const _CharT*, _Allocator>& __m,
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regex_constants::match_flag_type __flags) const
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{
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if (__left_anchor_)
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__flags |= regex_constants::match_continuous;
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__m.__init(1 + mark_count(), __first, __last,
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__flags & regex_constants::__no_update_pos);
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if (__match_at_start(__first, __last, __m, __flags))
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if (__match_at_start(__first, __last, __m, __flags, true))
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{
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__m.__prefix_.second = __m[0].first;
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__m.__prefix_.matched = __m.__prefix_.first != __m.__prefix_.second;
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@ -5702,7 +5743,7 @@ basic_regex<_CharT, _Traits>::__search(
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for (++__first; __first != __last; ++__first)
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{
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__m.__matches_.assign(__m.size(), __m.__unmatched_);
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if (__match_at_start(__first, __last, __m, __flags))
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if (__match_at_start(__first, __last, __m, __flags, false))
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{
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__m.__prefix_.second = __m[0].first;
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__m.__prefix_.matched = __m.__prefix_.first != __m.__prefix_.second;
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