carbon-lang/toolchain/check/testdata/interop/cpp/var/constexpr.carbon

// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/full.carbon
// EXTRA-ARGS: --clang-arg=--std=c++20
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP:   bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/var/constexpr.carbon
// TIP: To dump output, run:
// TIP:   bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/var/constexpr.carbon

// --- bool.carbon

library "[[@TEST_NAME]]";

import Cpp inline '''
constexpr bool b = true;
''';

class C(B:! bool) {}
fn F() -> C(Cpp.b);
let x: C(true) = F();

// --- int.carbon

library "[[@TEST_NAME]]";

import Cpp inline '''
constexpr int i = 123;
''';

class C(I:! i32) {}
fn F() -> C(Cpp.i);
let x: C(123) = F();

// --- float.carbon

library "[[@TEST_NAME]]";

import Cpp inline '''
constexpr float flt = 123.5;
''';

class C(V:! f32) {}
fn F() -> C(Cpp.flt);
let x: C(123.5) = F();

// --- pointer.carbon

library "[[@TEST_NAME]]";

import Cpp inline '''
int i = 123;
constexpr int* _Nonnull ptr = &i;
''';

class C(V:! i32*) {}
fn F() -> C(Cpp.ptr);
let x: C(&Cpp.i) = F();