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make optional constexpr in C++14

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This commit is contained in:
Andrzej Krzemienski
2026-02-07 02:12:24 +01:00
parent bfdf0c73f9
commit 3df23370e6
28 changed files with 1405 additions and 544 deletions
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test/optional_test_move.cpp
+36 -36
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@@ -75,13 +75,13 @@ void test_move_ctor_from_U()
optional<Oracle> o1 ((OracleVal()));
BOOST_TEST(o1);
BOOST_TEST(o1->s == sValueMoveConstructed || o1->s == sMoveConstructed);
OracleVal v1;
optional<Oracle> o2 (v1);
BOOST_TEST(o2);
BOOST_TEST(o2->s == sValueCopyConstructed || o2->s == sCopyConstructed || o2->s == sMoveConstructed );
BOOST_TEST(v1.s == sIntConstructed);
optional<Oracle> o3 (std::move(v1));
BOOST_TEST(o3);
BOOST_TEST(o3->s == sValueMoveConstructed || o3->s == sMoveConstructed);
@@ -93,13 +93,13 @@ void test_move_ctor_form_T()
optional<Oracle> o1 ((Oracle()));
BOOST_TEST(o1);
BOOST_TEST(o1->s == sMoveConstructed);
Oracle v1;
optional<Oracle> o2 (v1);
BOOST_TEST(o2);
BOOST_TEST(o2->s == sCopyConstructed);
BOOST_TEST(v1.s == sDefaultConstructed);
optional<Oracle> o3 (std::move(v1));
BOOST_TEST(o3);
BOOST_TEST(o3->s == sMoveConstructed);
@@ -110,24 +110,24 @@ void test_move_ctor_from_optional_T()
{
optional<Oracle> o1;
optional<Oracle> o2(std::move(o1));
BOOST_TEST(!o1);
BOOST_TEST(!o2);
optional<Oracle> o3((Oracle()));
optional<Oracle> o4(std::move(o3));
BOOST_TEST(o3);
BOOST_TEST(o4);
BOOST_TEST(o3->s == sMovedFrom);
BOOST_TEST(o4->s == sMoveConstructed);
optional<Oracle> o5((optional<Oracle>()));
BOOST_TEST(!o5);
optional<Oracle> o6((optional<Oracle>(Oracle())));
BOOST_TEST(o6);
BOOST_TEST(o6->s == sMoveConstructed);
optional<Oracle> o7(o6); // does copy ctor from non-const lvalue compile?
}
@@ -137,13 +137,13 @@ void test_move_assign_from_U()
o1 = boost::none; // test if additional assignments didn't break it
o1 = OracleVal();
BOOST_TEST(o1);
BOOST_TEST(o1->s == sValueMoveConstructed);
BOOST_TEST(o1->s == sValueMoveConstructed);
o1 = OracleVal();
BOOST_TEST(o1);
BOOST_TEST(o1->s == sMoveAssigned);
BOOST_TEST(o1->s == sMoveAssigned || o1->s == sValueMoveAssigned);
OracleVal v1;
optional<Oracle> o2;
o2 = v1;
@@ -152,9 +152,9 @@ void test_move_assign_from_U()
BOOST_TEST(v1.s == sIntConstructed);
o2 = v1;
BOOST_TEST(o2);
BOOST_TEST(o2->s == sCopyAssigned || o2->s == sMoveAssigned);
BOOST_TEST(o2->s == sCopyAssigned || o2->s == sMoveAssigned || o2->s == sValueCopyAssigned);
BOOST_TEST(v1.s == sIntConstructed);
optional<Oracle> o3;
o3 = std::move(v1);
BOOST_TEST(o3);
@@ -167,12 +167,12 @@ void test_move_assign_from_T()
optional<Oracle> o1;
o1 = Oracle();
BOOST_TEST(o1);
BOOST_TEST(o1->s == sMoveConstructed);
BOOST_TEST(o1->s == sMoveConstructed);
o1 = Oracle();
BOOST_TEST(o1);
BOOST_TEST(o1->s == sMoveAssigned);
BOOST_TEST(o1->s == sMoveAssigned);
Oracle v1;
optional<Oracle> o2;
o2 = v1;
@@ -183,7 +183,7 @@ void test_move_assign_from_T()
BOOST_TEST(o2);
BOOST_TEST(o2->s == sCopyAssigned);
BOOST_TEST(v1.s == sDefaultConstructed);
optional<Oracle> o3;
o3 = std::move(v1);
BOOST_TEST(o3);
@@ -203,13 +203,13 @@ void test_move_assign_from_optional_T()
BOOST_TEST(o3->s == sMoveConstructed);
BOOST_TEST(o1);
BOOST_TEST(o1->s == sCopyConstructed);
o2 = std::move(o3);
BOOST_TEST(o3);
BOOST_TEST(o3->s == sMovedFrom);
BOOST_TEST(o2);
BOOST_TEST(o2->s == sMoveConstructed);
o2 = optional<Oracle>((Oracle()));
BOOST_TEST(o2);
BOOST_TEST(o2->s == sMoveAssigned);
@@ -222,11 +222,11 @@ public:
MoveOnly(int v) : val(v) {}
MoveOnly(MoveOnly&& rhs) : val(rhs.val) { rhs.val = 0; }
void operator=(MoveOnly&& rhs) {val = rhs.val; rhs.val = 0; }
private:
MoveOnly(MoveOnly const&);
void operator=(MoveOnly const&);
friend class MoveOnlyB;
};
@@ -243,7 +243,7 @@ void test_with_move_only()
BOOST_TEST(o4->val == 1);
BOOST_TEST(o2);
BOOST_TEST(o2->val == 0);
o3 = std::move(o4);
BOOST_TEST(o3);
BOOST_TEST(o3->val == 1);
@@ -260,7 +260,7 @@ public:
void operator=(MoveOnlyB&& rhs) {val = rhs.val; rhs.val = 0; }
MoveOnlyB(MoveOnly&& rhs) : val(rhs.val) { rhs.val = 0; }
void operator=(MoveOnly&& rhs) {val = rhs.val; rhs.val = 0; }
private:
MoveOnlyB(MoveOnlyB const&);
void operator=(MoveOnlyB const&);
@@ -273,14 +273,14 @@ void test_move_assign_from_optional_U()
optional<MoveOnly> a((MoveOnly(2)));
optional<MoveOnlyB> b1;
b1 = std::move(a);
BOOST_TEST(b1);
BOOST_TEST(b1->val == 2);
BOOST_TEST(a);
BOOST_TEST(a->val == 0);
b1 = MoveOnly(4);
BOOST_TEST(b1);
BOOST_TEST(b1->val == 4);
}
@@ -289,14 +289,14 @@ void test_move_ctor_from_optional_U()
{
optional<MoveOnly> a((MoveOnly(2)));
optional<MoveOnlyB> b1(std::move(a));
BOOST_TEST(b1);
BOOST_TEST(b1->val == 2);
BOOST_TEST(a);
BOOST_TEST(a->val == 0);
optional<MoveOnlyB> b2(( optional<MoveOnly>(( MoveOnly(4) )) ));
BOOST_TEST(b2);
BOOST_TEST(b2->val == 4);
}
@@ -306,7 +306,7 @@ void test_swap()
optional<MoveOnly> a((MoveOnly(2)));
optional<MoveOnly> b((MoveOnly(3)));
swap(a, b);
BOOST_TEST(a->val == 3);
BOOST_TEST(b->val == 2);
}
@@ -317,12 +317,12 @@ void test_optional_ref_to_movables()
optional<MoveOnly&> orm = m;
orm->val = 2;
BOOST_TEST(m.val == 2);
optional<MoveOnly&> orm2 = orm;
orm2->val = 1;
BOOST_TEST(m.val == 1);
BOOST_TEST(orm->val == 1);
optional<MoveOnly&> orm3 = std::move(orm);
orm3->val = 4;
BOOST_TEST(m.val == 4);