368faacac7
This commit reverts5aaefa51(and also partly7f285f48e7andb6d75682f9, which were related to the original commit). As landed,5aaefa51had unintended consequences on some downstream bots and didn't have proper coverage upstream due to a few subtle things. Implementing this is something we should do in libc++, however we'll first need to address a few issues listed in https://reviews.llvm.org/D106124#3349710. Differential Revision: https://reviews.llvm.org/D120683
135 lines
3.5 KiB
C++
135 lines
3.5 KiB
C++
// -*- 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
|