xref: /freebsd/contrib/llvm-project/libcxx/include/__ios/fpos.h (revision 81ad626541db97eb356e2c1d4a20eb2a26a766ab)
1*81ad6265SDimitry Andric // -*- C++ -*-
2*81ad6265SDimitry Andric //===----------------------------------------------------------------------===//
3*81ad6265SDimitry Andric //
4*81ad6265SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5*81ad6265SDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
6*81ad6265SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7*81ad6265SDimitry Andric //
8*81ad6265SDimitry Andric //===----------------------------------------------------------------------===//
9*81ad6265SDimitry Andric 
10*81ad6265SDimitry Andric #ifndef _LIBCPP___IOS_FPOS_H
11*81ad6265SDimitry Andric #define _LIBCPP___IOS_FPOS_H
12*81ad6265SDimitry Andric 
13*81ad6265SDimitry Andric #include <__config>
14*81ad6265SDimitry Andric #include <iosfwd>
15*81ad6265SDimitry Andric 
16*81ad6265SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17*81ad6265SDimitry Andric #  pragma GCC system_header
18*81ad6265SDimitry Andric #endif
19*81ad6265SDimitry Andric 
20*81ad6265SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD
21*81ad6265SDimitry Andric 
22*81ad6265SDimitry Andric template <class _StateT>
23*81ad6265SDimitry Andric class _LIBCPP_TEMPLATE_VIS fpos {
24*81ad6265SDimitry Andric private:
25*81ad6265SDimitry Andric   _StateT __st_;
26*81ad6265SDimitry Andric   streamoff __off_;
27*81ad6265SDimitry Andric 
28*81ad6265SDimitry Andric public:
29*81ad6265SDimitry Andric   _LIBCPP_HIDE_FROM_ABI fpos(streamoff __off = streamoff()) : __st_(), __off_(__off) {}
30*81ad6265SDimitry Andric 
31*81ad6265SDimitry Andric   _LIBCPP_HIDE_FROM_ABI operator streamoff() const { return __off_; }
32*81ad6265SDimitry Andric 
33*81ad6265SDimitry Andric   _LIBCPP_HIDE_FROM_ABI _StateT state() const { return __st_; }
34*81ad6265SDimitry Andric   _LIBCPP_HIDE_FROM_ABI void state(_StateT __st) { __st_ = __st; }
35*81ad6265SDimitry Andric 
36*81ad6265SDimitry Andric   _LIBCPP_HIDE_FROM_ABI fpos& operator+=(streamoff __off) {
37*81ad6265SDimitry Andric     __off_ += __off;
38*81ad6265SDimitry Andric     return *this;
39*81ad6265SDimitry Andric   }
40*81ad6265SDimitry Andric 
41*81ad6265SDimitry Andric   _LIBCPP_HIDE_FROM_ABI fpos operator+(streamoff __off) const {
42*81ad6265SDimitry Andric     fpos __t(*this);
43*81ad6265SDimitry Andric     __t += __off;
44*81ad6265SDimitry Andric     return __t;
45*81ad6265SDimitry Andric   }
46*81ad6265SDimitry Andric 
47*81ad6265SDimitry Andric   _LIBCPP_HIDE_FROM_ABI fpos& operator-=(streamoff __off) {
48*81ad6265SDimitry Andric     __off_ -= __off;
49*81ad6265SDimitry Andric     return *this;
50*81ad6265SDimitry Andric   }
51*81ad6265SDimitry Andric 
52*81ad6265SDimitry Andric   _LIBCPP_HIDE_FROM_ABI fpos operator-(streamoff __off) const {
53*81ad6265SDimitry Andric     fpos __t(*this);
54*81ad6265SDimitry Andric     __t -= __off;
55*81ad6265SDimitry Andric     return __t;
56*81ad6265SDimitry Andric   }
57*81ad6265SDimitry Andric };
58*81ad6265SDimitry Andric 
59*81ad6265SDimitry Andric template <class _StateT>
60*81ad6265SDimitry Andric inline _LIBCPP_HIDE_FROM_ABI
61*81ad6265SDimitry Andric streamoff operator-(const fpos<_StateT>& __x, const fpos<_StateT>& __y) {
62*81ad6265SDimitry Andric   return streamoff(__x) - streamoff(__y);
63*81ad6265SDimitry Andric }
64*81ad6265SDimitry Andric 
65*81ad6265SDimitry Andric template <class _StateT>
66*81ad6265SDimitry Andric inline _LIBCPP_HIDE_FROM_ABI
67*81ad6265SDimitry Andric bool operator==(const fpos<_StateT>& __x, const fpos<_StateT>& __y) {
68*81ad6265SDimitry Andric   return streamoff(__x) == streamoff(__y);
69*81ad6265SDimitry Andric }
70*81ad6265SDimitry Andric 
71*81ad6265SDimitry Andric template <class _StateT>
72*81ad6265SDimitry Andric inline _LIBCPP_HIDE_FROM_ABI
73*81ad6265SDimitry Andric bool operator!=(const fpos<_StateT>& __x, const fpos<_StateT>& __y) {
74*81ad6265SDimitry Andric   return streamoff(__x) != streamoff(__y);
75*81ad6265SDimitry Andric }
76*81ad6265SDimitry Andric 
77*81ad6265SDimitry Andric _LIBCPP_END_NAMESPACE_STD
78*81ad6265SDimitry Andric 
79*81ad6265SDimitry Andric #endif // _LIBCPP___IOS_FPOS_H
80