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4fd4f57ef9212c847ee05e034aed3bf7c59cb3cc
clang-p2996/libcxx/test/std/experimental/reflection/member-visibility.pass.cpp
zebullax 9171cf41ef Fix is_public and is_class_member for scoped/unscoped enum (#194) 
* Add bubble up for unscoped enum in membership check

Check membership for public check access

Signed-off-by: zebullax <zebullax@gmail.com>

* Fix golden copy for generated headers

Signed-off-by: zebullax <zebullax@gmail.com>

* Skip validation of reflection unittest that introduce non ascii character

Signed-off-by: zebullax <zebullax@gmail.com>

* Check class membership for is_private/protected/public

Signed-off-by: zebullax <zebullax@gmail.com>

---------

Signed-off-by: zebullax <zebullax@gmail.com>
2025-10-22 17:46:23 +09:00

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//===----------------------------------------------------------------------===//
//
// Copyright 2024 Bloomberg Finance L.P.
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03 || c++11 || c++14 || c++17 || c++20
// ADDITIONAL_COMPILE_FLAGS: -freflection
// <experimental/reflection>
//
// [reflection]
#include <meta>
#include <ranges>
using std::meta::access_context;
struct PublicBase { int mem; };
struct ProtectedBase { int mem; };
struct PrivateBase { int mem; };
struct Access
: PublicBase, protected ProtectedBase, private PrivateBase {
static consteval access_context token() {
return access_context::current();
}
int pub;
public:
struct PublicCls {};
template <typename T> void PublicTFn();
protected:
int prot;
struct ProtectedCls {};
template <typename T> void ProtectedTFn();
private:
int priv;
struct PrivateCls {};
template <typename T> void PrivateTFn();
void complete_class_context() {
// Public members.
static_assert(is_public(^^pub));
static_assert(!is_access_specified(^^pub));
static_assert(is_public(^^PublicCls));
static_assert(is_access_specified(^^PublicCls));
static_assert(is_public(^^PublicTFn));
static_assert(is_access_specified(^^PublicTFn));
static_assert(is_public(bases_of(^^Access,
access_context::unchecked())[0]));
static_assert(
!is_access_specified(bases_of(^^Access,
access_context::unchecked())[0]));
// Not public members.
static_assert(!is_public(^^prot));
static_assert(!is_public(^^priv));
static_assert(!is_public(^^ProtectedCls));
static_assert(!is_public(^^PrivateCls));
static_assert(!is_public(^^ProtectedTFn));
static_assert(!is_public(^^PrivateTFn));
static_assert(!is_public(bases_of(^^Access,
access_context::unchecked())[1]));
static_assert(!is_public(bases_of(^^Access,
access_context::unchecked())[2]));
// Protected members.
static_assert(is_protected(^^prot));
static_assert(is_protected(^^ProtectedCls));
static_assert(is_protected(^^ProtectedTFn));
static_assert(is_protected(bases_of(^^Access,
access_context::unchecked())[1]));
// Not protected members.
static_assert(!is_protected(^^pub));
static_assert(!is_protected(^^priv));
static_assert(!is_protected(^^PublicCls));
static_assert(!is_protected(^^PrivateCls));
static_assert(!is_protected(^^PublicTFn));
static_assert(!is_protected(^^PrivateTFn));
static_assert(!is_protected(bases_of(^^Access,
access_context::unchecked())[0]));
static_assert(!is_protected(bases_of(^^Access,
access_context::unchecked())[2]));
// Private members.
static_assert(is_private(^^priv));
static_assert(is_private(^^PrivateCls));
static_assert(is_private(^^PrivateTFn));
static_assert(is_private(bases_of(^^Access,
access_context::unchecked())[2]));
// Not private members.
static_assert(!is_private(^^pub));
static_assert(!is_private(^^prot));
static_assert(!is_private(^^PublicCls));
static_assert(!is_private(^^ProtectedCls));
static_assert(!is_private(^^PublicTFn));
static_assert(!is_private(^^ProtectedTFn));
static_assert(!is_private(bases_of(^^Access,
access_context::unchecked())[0]));
static_assert(!is_private(bases_of(^^Access,
access_context::unchecked())[1]));
// Everything in this class is accessible.
constexpr auto ctx = access_context::current();
static_assert(is_accessible(^^pub, ctx));
static_assert(is_accessible(^^prot, ctx));
static_assert(is_accessible(^^priv, ctx));
static_assert(is_accessible(^^PublicCls, ctx));
static_assert(is_accessible(^^ProtectedCls, ctx));
static_assert(is_accessible(^^PublicTFn, ctx));
static_assert(is_accessible(^^ProtectedTFn, ctx));
static_assert(is_accessible(^^PrivateCls, ctx));
static_assert(is_accessible(bases_of(^^Access,
access_context::unchecked())[0],
ctx));
static_assert(is_accessible(bases_of(^^Access,
access_context::unchecked())[1],
ctx));
static_assert(is_accessible(bases_of(^^Access,
access_context::unchecked())[2],
ctx));
}
friend struct FriendClsOfAccess;
friend consteval access_context FriendFnOfAccess();
public:
static constexpr auto r_prot = ^^prot;
};
struct Derived : Access {
static constexpr auto ctx = access_context::current();
static constexpr auto obj_ctx = access_context::current().via(^^Derived);
static_assert(is_accessible(^^Access::PublicBase::mem, ctx));
static_assert(is_accessible(^^Access::ProtectedBase::mem, ctx));
static_assert(is_accessible(^^::PrivateBase::mem, ctx));
static_assert(!is_accessible(^^::PrivateBase::mem, obj_ctx));
static_assert(!is_accessible(Access::r_prot, ctx));
static_assert(is_accessible(Access::r_prot, obj_ctx));
};
static constexpr auto gctx = access_context::current();
static_assert(is_accessible(^^Access::pub, gctx));
static_assert(is_accessible(^^Access::PublicCls, gctx));
static_assert(is_accessible(^^Access::PublicTFn, gctx));
static_assert(is_accessible(^^Access::PublicBase::mem, gctx));
static_assert( // Access::prot
!is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_nonstatic_data_member) |
std::views::filter(std::meta::is_protected)).front(),
gctx));
static_assert( // Access::priv
!is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_nonstatic_data_member) |
std::views::filter(std::meta::is_private)).front(),
gctx));
static_assert( // Access::ProtectedCls
!is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_type) |
std::views::filter(std::meta::is_protected)).front(),
gctx));
static_assert( // Access::PrivateCls
!is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_type) |
std::views::filter(std::meta::is_private)).front(),
gctx));
static_assert( // Access::ProtectedTFn
!is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_template) |
std::views::filter(std::meta::is_protected)).front(),
gctx));
static_assert( // Access::ProtectedTFn
!is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_template) |
std::views::filter(std::meta::is_private)).front(),
gctx));
static_assert(is_accessible(bases_of(^^Access, // PublicBase
access_context::unchecked())[0], gctx));
static_assert(!is_accessible(bases_of(^^Access, // ProtectedBase
access_context::unchecked())[1], gctx));
static_assert(!is_accessible(bases_of(^^Access, // PrivateBase
access_context::unchecked())[2], gctx));
struct FriendClsOfAccess {
static constexpr auto ctx = access_context::current();
static_assert(is_accessible(^^Access::pub, ctx));
static_assert(is_accessible(^^Access::prot, ctx));
static_assert(is_accessible(^^Access::priv, ctx));
static_assert(is_accessible(^^Access::PublicCls, ctx));
static_assert(is_accessible(^^Access::ProtectedCls, ctx));
static_assert(is_accessible(^^Access::PublicTFn, ctx));
static_assert(is_accessible(^^Access::ProtectedTFn, ctx));
static_assert(is_accessible(^^Access::PrivateCls, ctx));
static_assert(is_accessible(^^Access::PublicBase::mem, ctx));
static_assert(is_accessible(^^Access::ProtectedBase::mem, ctx));
static_assert(is_accessible(^^Access::PrivateBase::mem, ctx));
static_assert(is_accessible(bases_of(^^Access, // PublicBase
access_context::unchecked())[0],
ctx));
static_assert(is_accessible(bases_of(^^Access, // ProtectedBase
access_context::unchecked())[1],
ctx));
static_assert(is_accessible(bases_of(^^Access, // PrivateBase
access_context::unchecked())[2],
ctx));
};
consteval access_context FriendFnOfAccess() {
static constexpr auto ctx = access_context::current();
static_assert(is_accessible(^^Access::pub, ctx));
static_assert(is_accessible(^^Access::prot, ctx));
static_assert(is_accessible(^^Access::priv, ctx));
static_assert(is_accessible(^^Access::PublicCls, ctx));
static_assert(is_accessible(^^Access::ProtectedCls, ctx));
static_assert(is_accessible(^^Access::PublicTFn, ctx));
static_assert(is_accessible(^^Access::ProtectedTFn, ctx));
static_assert(is_accessible(^^Access::PrivateCls, ctx));
static_assert(is_accessible(^^Access::PublicBase::mem, ctx));
static_assert(is_accessible(^^Access::ProtectedBase::mem, ctx));
static_assert(is_accessible(^^Access::PrivateBase::mem, ctx));
static_assert(is_accessible(bases_of(^^Access, // PublicBase
access_context::unchecked())[0],
ctx));
static_assert(is_accessible(bases_of(^^Access, // ProtctedBase
access_context::unchecked())[1],
ctx));
static_assert(is_accessible(bases_of(^^Access, // PrivateBase
access_context::unchecked())[2],
ctx));
return ctx;
}
// =====================
// new_accessibility_api
// =====================
static_assert(access_context::current().scope() == ^^::);
namespace new_accessibility_api {
static_assert(access_context::current().scope() == ^^::new_accessibility_api);
void fn() {
static_assert(access_context::current().scope() == ^^fn);
[] {
constexpr auto repr = access_context::current().scope();
static_assert(is_function(repr));
static_assert(repr != ^^fn);
}();
}
static_assert(
!is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_private)).front(),
access_context::current()));
static_assert(
is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_private)).front(),
FriendFnOfAccess()));
static_assert(
is_accessible((members_of(^^Access, access_context::unchecked()) |
std::views::filter(std::meta::is_private)).front(),
Access::token()));
} // namespace new_accessibility_api
// ================
// nonsense_queries
// ================
namespace nonsense_queries {
static_assert(!is_public(std::meta::info{}));
static_assert(!is_public(^^int));
static_assert(!is_protected(std::meta::info{}));
static_assert(!is_protected(^^int));
static_assert(!is_private(std::meta::info{}));
static_assert(!is_private(^^int));
} // namespace queries
// ==============
// unscoped_enums
// ==============
namespace unscoped_enums {
class C {
enum { E };
public:
enum { F };
static constexpr auto r = ^^E;
};
static_assert(!is_accessible(C::r,
std::meta::access_context::unprivileged()));
static_assert(!is_accessible(C::r,
std::meta::access_context::unprivileged().via(^^C)));
static_assert(is_accessible(^^C::F,
std::meta::access_context::unprivileged()));
static_assert(is_accessible(^^C::F,
std::meta::access_context::unprivileged().via(^^C)));
} // namespace unscoped_enums
// ========================
// anonymous_structs_unions
// ========================
namespace anonymous_structs_unions {
class C {
struct { struct { struct { int a; }; }; };
public:
union { union { union { int b; }; }; };
static constexpr auto r_a = ^^a;
};
static_assert(is_accessible(C::r_a,
std::meta::access_context::unprivileged()));
static_assert(!is_accessible(C::r_a,
std::meta::access_context::unprivileged().via(^^C)));
static_assert(is_accessible(^^C::b,
std::meta::access_context::unprivileged()));
static_assert(is_accessible(^^C::b,
std::meta::access_context::unprivileged().via(^^C)));
static union { int a; };
static_assert(is_accessible(^^a,
std::meta::access_context::unprivileged()));
} // namespace anonymous_structs_unions
// ========================
// default_mem_initializers
// ========================
namespace default_mem_initializers {
struct A {
int a;
consteval A(int p) : a(p) {}
};
struct B : A {
using A::A;
consteval B(int p, int q) : A(p * q) {}
std::meta::info s = std::meta::access_context::current().scope();
};
static_assert(B(1).s == ^^B);
static_assert(is_constructor(B{1, 2}.s) && parent_of(B{1, 2}.s) == ^^B);
} // namespace default_mem_initializers
// =====================================
// access_context_always_value_dependent
// =====================================
namespace access_context_always_value_dependent {
template <bool B> consteval auto baz() -> int {
static constexpr int v = (std::meta::access_context::current().scope() ==
^^baz<true>) ?
42 : INT_MAX + 1;
return v;
}
static_assert(baz<true>() == 42);
} // namespace access_context_always_value_dependent
// ========================================
// bb_clang_p2996_issue_148_regression_test
// ========================================
namespace bb_clang_p2996_issue_148_regression_test {
struct A {};
struct B {};
struct C {};
struct D : A, protected B, private C {
static consteval auto foo()
{
constexpr auto ctx = std::meta::access_context::current();
constexpr auto n = bases_of(^^D, ctx).size();
static_assert(n == 3);
static_assert(bases_of(^^D, ctx).size() == 3);
}
};
} // namespace bb_clang_p2996_issue_148_regression_test
// ========================================
// bb_clang_p2996_issue_193_regression_test
// ========================================
namespace bb_clang_p2996_issue_193_regression_test {
struct S {
enum E {
A
};
enum class SE {
B
};
};
static_assert(std::meta::is_class_member(^^S::E));
static_assert(std::meta::is_class_member(^^S::SE));
static_assert(std::meta::is_public(^^S::E));
static_assert(std::meta::is_public(^^S::SE));
static_assert(std::meta::is_class_member(^^S::E::A));
static_assert(!std::meta::is_class_member(^^S::SE::B));
static_assert(std::meta::is_public(^^S::E::A));
static_assert(!std::meta::is_public(^^S::SE::B));
} // namespace bb_clang_p2996_issue_193_regression_test
int main() { }
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