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https://github.com/carbon-language/carbon-lang.git
synced 2026-11-15 13:08:29 +00:00
Richard Smith
09b79784dc
When exporting `X` from Carbon package `Foo`, expose it to C++ with fully-qualified name `Carbon::Foo::X`, not simply `Carbon::X`. This ensures that C++ mangled names properly distinguish between same-named Carbon entities in different packages. Name *lookup* into `Carbon::` still uses the same rules as before: it finds what a `package.` lookup would find in Carbon. So `X` is named from C++ as `Carbon::X` still, and a lookup for `Carbon::Foo` fails, even though `X`'s "true name" is now `Carbon::Foo::X`. Assisted-by: Gemini via Antigravity
95 lines
2.6 KiB
Plaintext
95 lines
2.6 KiB
Plaintext
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/primitives.carbon
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//
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// AUTOUPDATE
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// TIP: To test this file alone, run:
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// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/class/export/class.carbon
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// TIP: To dump output, run:
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// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/class/export/class.carbon
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// --- static_members.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class StaticMembers {
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fn F() {}
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}
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inline Cpp '''
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void CallStaticMember() {
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Carbon::StaticMembers::F();
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}
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''';
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// --- nested.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class OuterA {
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class InnerB {
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class NestedC {
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}
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}
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}
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inline Cpp '''
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void TestNested() {
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Carbon::OuterA::InnerB::NestedC *nested_p = nullptr;
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}
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''';
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// --- incomplete.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class IncompleteA;
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inline Cpp '''
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Carbon::IncompleteA *incomplete_p = nullptr;
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''';
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// --- fail_incomplete_concrete.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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// CHECK:STDERR: fail_incomplete_concrete.carbon:[[@LINE+2]]:1-26: error: class was forward declared here [ClassForwardDeclaredHere]
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// CHECK:STDERR:
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class IncompleteConcreteA;
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inline Cpp '''
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// CHECK:STDERR: fail_incomplete_concrete.carbon:[[@LINE+3]]:29: error: variable has incomplete type 'Carbon::IncompleteConcreteA' (aka 'Carbon::Main::IncompleteConcreteA') [CppInteropParseError]
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// CHECK:STDERR: fail_incomplete_concrete.carbon:[[@LINE-4]]:26: note: forward declaration of 'Carbon::Main::IncompleteConcreteA' [CppInteropParseNote]
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// CHECK:STDERR:
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Carbon::IncompleteConcreteA incomplete_concrete_a;
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''';
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// --- fail_todo_monomorphization_failure.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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// CHECK:STDERR: fail_todo_monomorphization_failure.carbon:[[@LINE+2]]:1-17: error: semantics TODO: `binding maps to a non-type template parameter` [SemanticsTodo]
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// CHECK:STDERR:
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class B(N: i32) {
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var a: array(i8, N);
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}
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// TODO: Once we allow this, we should produce an "invalid array bound" error
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// during monomorphization triggered by the C++ code.
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alias T = B(-1);
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inline Cpp '''
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// CHECK:STDERR: fail_todo_monomorphization_failure.carbon:[[@LINE+4]]:1: error: semantics TODO: `interop with unsupported type` [SemanticsTodo]
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// CHECK:STDERR:
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// CHECK:STDERR: fail_todo_monomorphization_failure.carbon:[[@LINE+2]]:9: error: no type named 'T' in namespace 'Carbon' [CppInteropParseError]
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// CHECK:STDERR:
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Carbon::T t;
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''';
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