mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-11-15 10:48:34 +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
84 lines
2.4 KiB
Plaintext
84 lines
2.4 KiB
Plaintext
// 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/int.carbon
|
|
//
|
|
// AUTOUPDATE
|
|
// TIP: To test this file alone, run:
|
|
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/class/export/generic.carbon
|
|
// TIP: To dump output, run:
|
|
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/class/export/generic.carbon
|
|
|
|
// --- generic_class.carbon
|
|
library "[[@TEST_NAME]]";
|
|
import Cpp;
|
|
|
|
class GenericClass(T: type) {
|
|
var t: T;
|
|
}
|
|
|
|
inline Cpp '''
|
|
void FGeneric() {
|
|
Carbon::GenericClass<int> c;
|
|
c.t = 123;
|
|
}
|
|
''';
|
|
|
|
// --- specific_alias.carbon
|
|
library "[[@TEST_NAME]]";
|
|
import Cpp;
|
|
|
|
class SpecificClass(T: type) {
|
|
var t: T;
|
|
}
|
|
alias AliasInt = SpecificClass(i32);
|
|
|
|
inline Cpp '''
|
|
void FSpecific() {
|
|
Carbon::AliasInt a;
|
|
a.t = 123;
|
|
}
|
|
''';
|
|
|
|
// --- fail_unsupported_specific_arg.carbon
|
|
library "[[@TEST_NAME]]";
|
|
import Cpp;
|
|
|
|
// CHECK:STDERR: fail_unsupported_specific_arg.carbon:[[@LINE+2]]:1-33: error: semantics TODO: `failed to map specific type arg to C++` [SemanticsTodo]
|
|
// CHECK:STDERR:
|
|
class UnsupportedClass(T: type) {
|
|
var t: T;
|
|
}
|
|
alias AliasEmptyTuple = UnsupportedClass(());
|
|
|
|
inline Cpp '''
|
|
void FUnsupported() {
|
|
// CHECK:STDERR: fail_unsupported_specific_arg.carbon:[[@LINE+4]]:11: error: semantics TODO: `interop with unsupported type` [SemanticsTodo]
|
|
// CHECK:STDERR:
|
|
// CHECK:STDERR: fail_unsupported_specific_arg.carbon:[[@LINE+2]]:11: error: no type named 'AliasEmptyTuple' in namespace 'Carbon' [CppInteropParseError]
|
|
// CHECK:STDERR:
|
|
Carbon::AliasEmptyTuple a;
|
|
a.t = 123;
|
|
}
|
|
''';
|
|
|
|
// --- fail_todo_generic_class_method_call.carbon
|
|
library "[[@TEST_NAME]]";
|
|
import Cpp;
|
|
|
|
class ClassWithMethod(T: type) {
|
|
// CHECK:STDERR: fail_todo_generic_class_method_call.carbon:[[@LINE+2]]:3-25: error: semantics TODO: `non-class non-namespace name scope` [SemanticsTodo]
|
|
// CHECK:STDERR:
|
|
fn M(unused ref self) {}
|
|
}
|
|
|
|
inline Cpp '''
|
|
void FMethodCall() {
|
|
Carbon::ClassWithMethod<int> c;
|
|
// CHECK:STDERR: fail_todo_generic_class_method_call.carbon:[[@LINE+2]]:5: error: no member named 'M' in 'Carbon::Main::ClassWithMethod<int>' [CppInteropParseError]
|
|
// CHECK:STDERR:
|
|
c.M();
|
|
}
|
|
''';
|