| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef _LIBCPP___FILESYSTEM_PATH_ITERATOR_H |
| #define _LIBCPP___FILESYSTEM_PATH_ITERATOR_H |
| |
| #include <__assert> |
| #include <__availability> |
| #include <__config> |
| #include <__filesystem/path.h> |
| #include <__iterator/iterator_traits.h> |
| #include <cstddef> |
| #include <string> |
| #include <string_view> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| #ifndef _LIBCPP_CXX03_LANG |
| |
| _LIBCPP_BEGIN_NAMESPACE_FILESYSTEM |
| |
| _LIBCPP_AVAILABILITY_FILESYSTEM_PUSH |
| |
| class _LIBCPP_TYPE_VIS path::iterator { |
| public: |
| enum _ParserState : unsigned char { |
| _Singular, |
| _BeforeBegin, |
| _InRootName, |
| _InRootDir, |
| _InFilenames, |
| _InTrailingSep, |
| _AtEnd |
| }; |
| |
| public: |
| typedef input_iterator_tag iterator_category; |
| typedef bidirectional_iterator_tag iterator_concept; |
| |
| typedef path value_type; |
| typedef ptrdiff_t difference_type; |
| typedef const path* pointer; |
| typedef path reference; |
| |
| public: |
| _LIBCPP_INLINE_VISIBILITY |
| iterator() |
| : __stashed_elem_(), __path_ptr_(nullptr), __entry_(), |
| __state_(_Singular) {} |
| |
| iterator(const iterator&) = default; |
| ~iterator() = default; |
| |
| iterator& operator=(const iterator&) = default; |
| |
| _LIBCPP_INLINE_VISIBILITY |
| reference operator*() const { return __stashed_elem_; } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| pointer operator->() const { return &__stashed_elem_; } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| iterator& operator++() { |
| _LIBCPP_ASSERT(__state_ != _Singular, |
| "attempting to increment a singular iterator"); |
| _LIBCPP_ASSERT(__state_ != _AtEnd, |
| "attempting to increment the end iterator"); |
| return __increment(); |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| iterator operator++(int) { |
| iterator __it(*this); |
| this->operator++(); |
| return __it; |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| iterator& operator--() { |
| _LIBCPP_ASSERT(__state_ != _Singular, |
| "attempting to decrement a singular iterator"); |
| _LIBCPP_ASSERT(__entry_.data() != __path_ptr_->native().data(), |
| "attempting to decrement the begin iterator"); |
| return __decrement(); |
| } |
| |
| _LIBCPP_INLINE_VISIBILITY |
| iterator operator--(int) { |
| iterator __it(*this); |
| this->operator--(); |
| return __it; |
| } |
| |
| private: |
| friend class path; |
| |
| inline _LIBCPP_INLINE_VISIBILITY friend bool operator==(const iterator&, |
| const iterator&); |
| |
| iterator& __increment(); |
| iterator& __decrement(); |
| |
| path __stashed_elem_; |
| const path* __path_ptr_; |
| path::__string_view __entry_; |
| _ParserState __state_; |
| }; |
| |
| inline _LIBCPP_INLINE_VISIBILITY bool operator==(const path::iterator& __lhs, |
| const path::iterator& __rhs) { |
| return __lhs.__path_ptr_ == __rhs.__path_ptr_ && |
| __lhs.__entry_.data() == __rhs.__entry_.data(); |
| } |
| |
| inline _LIBCPP_INLINE_VISIBILITY bool operator!=(const path::iterator& __lhs, |
| const path::iterator& __rhs) { |
| return !(__lhs == __rhs); |
| } |
| |
| _LIBCPP_AVAILABILITY_FILESYSTEM_POP |
| |
| _LIBCPP_END_NAMESPACE_FILESYSTEM |
| |
| #endif // _LIBCPP_CXX03_LANG |
| |
| #endif // _LIBCPP___FILESYSTEM_PATH_ITERATOR_H |