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https://github.com/carbon-language/carbon-lang.git
synced 2026-10-01 22:02:45 +01:00
Boaz Brickner
fcd38a4d7f
This adds support for having different C++ `NameScope`s (and not just
the main `Cpp` scope), and we keep a pointer to `clang::DeclContext`
these scopes so we can look up C++ names in the right part of the AST.
C++ Interop Demo with a namespace:
```c++
// hello_world.h
namespace some_namespace {
void hello_world();
} // namespace some_namespace
```
```c++
// hello_world.cpp
#include <cstdio>
namespace some_namespace {
void hello_world() { printf("Hello World!\n"); }
} // namespace some_namespace
```
```carbon
// main.carbon
library "Main";
import Cpp library "hello_world.h";
fn Run() -> i32 {
Cpp.some_namespace.hello_world();
return 0;
}
```
```shell
$ clang -c hello_world.cpp
$ bazel-bin/toolchain/carbon compile main.carbon
$ bazel-bin/toolchain/carbon link hello_world.o main.o --output=demo
$ ./demo
Hello World!
```
Closes #5102
42 lines
1.3 KiB
Plaintext
42 lines
1.3 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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// 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/no_prelude/include.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/no_prelude/include.carbon
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// --- included_file.h
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void foo();
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// --- including_file.h
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#include "included_file.h"
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// --- import_function_decl.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "including_file.h";
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// CHECK:STDOUT: --- import_function_decl.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
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// CHECK:STDOUT: import Cpp//...
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: file {
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// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
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// CHECK:STDOUT: .Cpp = imports.%Cpp
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Cpp.import_cpp = import_cpp {
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// CHECK:STDOUT: import Cpp "including_file.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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