| // Copyright (C) 2013-2021 Free Software Foundation, Inc. |
| // |
| // This file is part of the GNU ISO C++ Library. This library is free |
| // software; you can redistribute it and/or modify it under the |
| // terms of the GNU General Public License as published by the |
| // Free Software Foundation; either version 3, or (at your option) |
| // any later version. |
| |
| // This library is distributed in the hope that it will be useful, |
| // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| // GNU General Public License for more details. |
| |
| // You should have received a copy of the GNU General Public License along |
| // with this library; see the file COPYING3. If not see |
| // <http://www.gnu.org/licenses/>. |
| |
| namespace cons_value { |
| |
| struct tracker |
| { |
| tracker(int value) : value(value) { ++count; } |
| ~tracker() { --count; } |
| |
| tracker(tracker const& other) : value(other.value) { ++count; } |
| tracker(tracker&& other) : value(other.value) |
| { |
| other.value = -1; |
| ++count; |
| } |
| |
| tracker& operator=(tracker const&) = default; |
| tracker& operator=(tracker&&) = default; |
| |
| int value; |
| |
| static int count; |
| }; |
| |
| int tracker::count = 0; |
| |
| struct exception { }; |
| |
| struct throwing_construction |
| { |
| explicit throwing_construction(bool propagate) : propagate(propagate) { } |
| |
| throwing_construction(throwing_construction const& other) |
| : propagate(other.propagate) |
| { |
| if(propagate) |
| throw exception {}; |
| } |
| |
| bool propagate; |
| }; |
| |
| static void |
| test () |
| { |
| // [20.5.4.1] Constructors |
| |
| { |
| auto i = 0x1234ABCD; |
| gdb::optional<long> o { i }; |
| VERIFY( o ); |
| VERIFY( *o == 0x1234ABCD ); |
| VERIFY( i == 0x1234ABCD ); |
| } |
| |
| { |
| auto i = 0x1234ABCD; |
| gdb::optional<long> o = i; |
| VERIFY( o ); |
| VERIFY( *o == 0x1234ABCD ); |
| VERIFY( i == 0x1234ABCD ); |
| } |
| |
| { |
| auto i = 0x1234ABCD; |
| gdb::optional<long> o = { i }; |
| VERIFY( o ); |
| VERIFY( *o == 0x1234ABCD ); |
| VERIFY( i == 0x1234ABCD ); |
| } |
| |
| { |
| auto i = 0x1234ABCD; |
| gdb::optional<long> o { std::move(i) }; |
| VERIFY( o ); |
| VERIFY( *o == 0x1234ABCD ); |
| VERIFY( i == 0x1234ABCD ); |
| } |
| |
| { |
| auto i = 0x1234ABCD; |
| gdb::optional<long> o = std::move(i); |
| VERIFY( o ); |
| VERIFY( *o == 0x1234ABCD ); |
| VERIFY( i == 0x1234ABCD ); |
| } |
| |
| { |
| auto i = 0x1234ABCD; |
| gdb::optional<long> o = { std::move(i) }; |
| VERIFY( o ); |
| VERIFY( *o == 0x1234ABCD ); |
| VERIFY( i == 0x1234ABCD ); |
| } |
| |
| #ifndef GDB_OPTIONAL |
| { |
| std::vector<int> v = { 0, 1, 2, 3, 4, 5 }; |
| gdb::optional<std::vector<int>> o { v }; |
| VERIFY( !v.empty() ); |
| VERIFY( o->size() == 6 ); |
| } |
| #endif |
| |
| { |
| std::vector<int> v = { 0, 1, 2, 3, 4, 5 }; |
| gdb::optional<std::vector<int>> o = v; |
| VERIFY( !v.empty() ); |
| VERIFY( o->size() == 6 ); |
| } |
| |
| { |
| std::vector<int> v = { 0, 1, 2, 3, 4, 5 }; |
| gdb::optional<std::vector<int>> o { v }; |
| VERIFY( !v.empty() ); |
| VERIFY( o->size() == 6 ); |
| } |
| |
| { |
| std::vector<int> v = { 0, 1, 2, 3, 4, 5 }; |
| gdb::optional<std::vector<int>> o { std::move(v) }; |
| VERIFY( v.empty() ); |
| VERIFY( o->size() == 6 ); |
| } |
| |
| { |
| std::vector<int> v = { 0, 1, 2, 3, 4, 5 }; |
| gdb::optional<std::vector<int>> o = std::move(v); |
| VERIFY( v.empty() ); |
| VERIFY( o->size() == 6 ); |
| } |
| |
| { |
| std::vector<int> v = { 0, 1, 2, 3, 4, 5 }; |
| gdb::optional<std::vector<int>> o { std::move(v) }; |
| VERIFY( v.empty() ); |
| VERIFY( o->size() == 6 ); |
| } |
| |
| { |
| tracker t { 333 }; |
| gdb::optional<tracker> o = t; |
| VERIFY( o->value == 333 ); |
| VERIFY( tracker::count == 2 ); |
| VERIFY( t.value == 333 ); |
| } |
| |
| { |
| tracker t { 333 }; |
| gdb::optional<tracker> o = std::move(t); |
| VERIFY( o->value == 333 ); |
| VERIFY( tracker::count == 2 ); |
| VERIFY( t.value == -1 ); |
| } |
| |
| enum outcome { nothrow, caught, bad_catch }; |
| |
| { |
| outcome result = nothrow; |
| throwing_construction t { false }; |
| |
| try |
| { |
| gdb::optional<throwing_construction> o { t }; |
| } |
| catch(exception const&) |
| { result = caught; } |
| catch(...) |
| { result = bad_catch; } |
| |
| VERIFY( result == nothrow ); |
| } |
| |
| { |
| outcome result = nothrow; |
| throwing_construction t { true }; |
| |
| try |
| { |
| gdb::optional<throwing_construction> o { t }; |
| } |
| catch(exception const&) |
| { result = caught; } |
| catch(...) |
| { result = bad_catch; } |
| |
| VERIFY( result == caught ); |
| } |
| |
| { |
| outcome result = nothrow; |
| throwing_construction t { false }; |
| |
| try |
| { |
| gdb::optional<throwing_construction> o { std::move(t) }; |
| } |
| catch(exception const&) |
| { result = caught; } |
| catch(...) |
| { result = bad_catch; } |
| |
| VERIFY( result == nothrow ); |
| } |
| |
| { |
| outcome result = nothrow; |
| throwing_construction t { true }; |
| |
| try |
| { |
| gdb::optional<throwing_construction> o { std::move(t) }; |
| } |
| catch(exception const&) |
| { result = caught; } |
| catch(...) |
| { result = bad_catch; } |
| |
| VERIFY( result == caught ); |
| } |
| |
| { |
| #ifndef GDB_OPTIONAL |
| gdb::optional<std::string> os = "foo"; |
| #endif |
| struct X |
| { |
| explicit X(int) {} |
| X& operator=(int) {return *this;} |
| }; |
| #ifndef GDB_OPTIONAL |
| gdb::optional<X> ox{42}; |
| #endif |
| gdb::optional<int> oi{42}; |
| #ifndef GDB_OPTIONAL |
| gdb::optional<X> ox2{oi}; |
| #endif |
| gdb::optional<std::string> os2; |
| os2 = "foo"; |
| #ifndef GDB_OPTIONAL |
| gdb::optional<X> ox3; |
| ox3 = 42; |
| gdb::optional<X> ox4; |
| ox4 = oi; |
| #endif |
| } |
| { |
| // no converting construction. |
| #ifndef GDB_OPTIONAL |
| gdb::optional<int> oi = gdb::optional<short>(); |
| VERIFY(!bool(oi)); |
| gdb::optional<std::string> os = gdb::optional<const char*>(); |
| VERIFY(!bool(os)); |
| #endif |
| gdb::optional<gdb::optional<int>> ooi = gdb::optional<int>(); |
| VERIFY(bool(ooi)); |
| ooi = gdb::optional<int>(); |
| VERIFY(bool(ooi)); |
| ooi = gdb::optional<int>(42); |
| VERIFY(bool(ooi)); |
| VERIFY(bool(*ooi)); |
| #ifndef GDB_OPTIONAL |
| gdb::optional<gdb::optional<int>> ooi2 = gdb::optional<short>(); |
| VERIFY(bool(ooi2)); |
| ooi2 = gdb::optional<short>(); |
| VERIFY(bool(ooi2)); |
| ooi2 = gdb::optional<short>(6); |
| VERIFY(bool(ooi2)); |
| VERIFY(bool(*ooi2)); |
| gdb::optional<gdb::optional<int>> ooi3 = gdb::optional<int>(42); |
| VERIFY(bool(ooi3)); |
| VERIFY(bool(*ooi3)); |
| gdb::optional<gdb::optional<int>> ooi4 = gdb::optional<short>(6); |
| VERIFY(bool(ooi4)); |
| VERIFY(bool(*ooi4)); |
| #endif |
| } |
| } |
| |
| } // namespace cons_value |