mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-01 21:15:55 +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
361 lines
14 KiB
Plaintext
361 lines
14 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/cpp_diagnostics.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/cpp_diagnostics.carbon
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// --- one_error.h
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#error "error1"
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// --- fail_import_cpp_file_with_one_error.carbon
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library "[[@TEST_NAME]]";
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// CHECK:STDERR: fail_import_cpp_file_with_one_error.carbon:[[@LINE+9]]:1: error: 1 error and 0 warnings in 1 `Cpp` import:
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// CHECK:STDERR: In file included from fail_import_cpp_file_with_one_error.carbon.generated.cpp_imports.h:1:
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// CHECK:STDERR: ./one_error.h:2:2: error: "error1"
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// CHECK:STDERR: 2 | #error "error1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: [CppInteropParseError]
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// CHECK:STDERR: import Cpp library "one_error.h";
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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import Cpp library "one_error.h";
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// --- multiple_errors.h
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#error "error1"
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#error "error2"
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// --- fail_import_cpp_file_with_multiple_errors.carbon
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library "[[@TEST_NAME]]";
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// CHECK:STDERR: fail_import_cpp_file_with_multiple_errors.carbon:[[@LINE+12]]:1: error: 2 errors and 0 warnings in 1 `Cpp` import:
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// CHECK:STDERR: In file included from fail_import_cpp_file_with_multiple_errors.carbon.generated.cpp_imports.h:1:
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// CHECK:STDERR: ./multiple_errors.h:2:2: error: "error1"
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// CHECK:STDERR: 2 | #error "error1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors.h:3:2: error: "error2"
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// CHECK:STDERR: 3 | #error "error2"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: [CppInteropParseError]
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// CHECK:STDERR: import Cpp library "multiple_errors.h";
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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import Cpp library "multiple_errors.h";
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// --- one_warning.h
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#warning "warning1"
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// --- import_cpp_file_with_one_warning.carbon
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library "[[@TEST_NAME]]";
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// CHECK:STDERR: import_cpp_file_with_one_warning.carbon:[[@LINE+9]]:1: warning: 1 warning in `Cpp` 1 import:
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// CHECK:STDERR: In file included from import_cpp_file_with_one_warning.carbon.generated.cpp_imports.h:1:
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// CHECK:STDERR: ./one_warning.h:2:2: warning: "warning1"
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// CHECK:STDERR: 2 | #warning "warning1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: [CppInteropParseWarning]
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// CHECK:STDERR: import Cpp library "one_warning.h";
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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import Cpp library "one_warning.h";
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// --- multiple_warnings.h
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#warning "warning1"
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#warning "warning2"
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#warning "warning3"
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// --- import_cpp_file_with_multiple_warnings.carbon
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library "[[@TEST_NAME]]";
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// CHECK:STDERR: import_cpp_file_with_multiple_warnings.carbon:[[@LINE+15]]:1: warning: 3 warnings in `Cpp` 1 import:
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// CHECK:STDERR: In file included from import_cpp_file_with_multiple_warnings.carbon.generated.cpp_imports.h:1:
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// CHECK:STDERR: ./multiple_warnings.h:2:2: warning: "warning1"
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// CHECK:STDERR: 2 | #warning "warning1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_warnings.h:3:2: warning: "warning2"
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// CHECK:STDERR: 3 | #warning "warning2"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_warnings.h:4:2: warning: "warning3"
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// CHECK:STDERR: 4 | #warning "warning3"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: [CppInteropParseWarning]
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// CHECK:STDERR: import Cpp library "multiple_warnings.h";
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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import Cpp library "multiple_warnings.h";
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// --- one_error_and_one_warning.h
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#error "error1"
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#warning "warning1"
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// --- fail_import_cpp_file_with_one_error_and_one_warning.carbon
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library "[[@TEST_NAME]]";
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// CHECK:STDERR: fail_import_cpp_file_with_one_error_and_one_warning.carbon:[[@LINE+12]]:1: error: 1 error and 1 warning in 1 `Cpp` import:
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// CHECK:STDERR: In file included from fail_import_cpp_file_with_one_error_and_one_warning.carbon.generated.cpp_imports.h:1:
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// CHECK:STDERR: ./one_error_and_one_warning.h:2:2: error: "error1"
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// CHECK:STDERR: 2 | #error "error1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./one_error_and_one_warning.h:3:2: warning: "warning1"
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// CHECK:STDERR: 3 | #warning "warning1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: [CppInteropParseError]
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// CHECK:STDERR: import Cpp library "one_error_and_one_warning.h";
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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import Cpp library "one_error_and_one_warning.h";
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// --- multiple_errors_and_multiple_warnings.h
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#error "error1"
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#error "error2"
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#warning "warning1"
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#warning "warning2"
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#warning "warning3"
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// --- fail_import_cpp_file_with_multiple_errors_and_multiple_warnings.carbon
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library "[[@TEST_NAME]]";
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// CHECK:STDERR: fail_import_cpp_file_with_multiple_errors_and_multiple_warnings.carbon:[[@LINE+21]]:1: error: 2 errors and 3 warnings in 1 `Cpp` import:
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// CHECK:STDERR: In file included from fail_import_cpp_file_with_multiple_errors_and_multiple_warnings.carbon.generated.cpp_imports.h:1:
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:2:2: error: "error1"
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// CHECK:STDERR: 2 | #error "error1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:3:2: error: "error2"
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// CHECK:STDERR: 3 | #error "error2"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:4:2: warning: "warning1"
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// CHECK:STDERR: 4 | #warning "warning1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:5:2: warning: "warning2"
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// CHECK:STDERR: 5 | #warning "warning2"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:6:2: warning: "warning3"
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// CHECK:STDERR: 6 | #warning "warning3"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: [CppInteropParseError]
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// CHECK:STDERR: import Cpp library "multiple_errors_and_multiple_warnings.h";
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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import Cpp library "multiple_errors_and_multiple_warnings.h";
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// --- import_multiple_cpp_files_with_warnings.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "one_warning.h";
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// CHECK:STDERR: import_multiple_cpp_files_with_warnings.carbon:[[@LINE+19]]:1: warning: 4 warnings in `Cpp` 2 imports:
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// CHECK:STDERR: In file included from import_multiple_cpp_files_with_warnings.carbon.generated.cpp_imports.h:1:
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// CHECK:STDERR: ./one_warning.h:2:2: warning: "warning1"
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// CHECK:STDERR: 2 | #warning "warning1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: In file included from import_multiple_cpp_files_with_warnings.carbon.generated.cpp_imports.h:2:
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// CHECK:STDERR: ./multiple_warnings.h:2:2: warning: "warning1"
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// CHECK:STDERR: 2 | #warning "warning1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_warnings.h:3:2: warning: "warning2"
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// CHECK:STDERR: 3 | #warning "warning2"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_warnings.h:4:2: warning: "warning3"
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// CHECK:STDERR: 4 | #warning "warning3"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: [CppInteropParseWarning]
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// CHECK:STDERR: import Cpp library "multiple_warnings.h";
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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import Cpp library "multiple_warnings.h";
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// --- fail_import_multiple_cpp_files_with_warnings_and_errors.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "one_error_and_one_warning.h";
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// CHECK:STDERR: fail_import_multiple_cpp_files_with_warnings_and_errors.carbon:[[@LINE+28]]:1: error: 3 errors and 4 warnings in 2 `Cpp` imports:
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// CHECK:STDERR: In file included from fail_import_multiple_cpp_files_with_warnings_and_errors.carbon.generated.cpp_imports.h:1:
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// CHECK:STDERR: ./one_error_and_one_warning.h:2:2: error: "error1"
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// CHECK:STDERR: 2 | #error "error1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./one_error_and_one_warning.h:3:2: warning: "warning1"
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// CHECK:STDERR: 3 | #warning "warning1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: In file included from fail_import_multiple_cpp_files_with_warnings_and_errors.carbon.generated.cpp_imports.h:2:
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:2:2: error: "error1"
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// CHECK:STDERR: 2 | #error "error1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:3:2: error: "error2"
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// CHECK:STDERR: 3 | #error "error2"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:4:2: warning: "warning1"
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// CHECK:STDERR: 4 | #warning "warning1"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:5:2: warning: "warning2"
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// CHECK:STDERR: 5 | #warning "warning2"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: ./multiple_errors_and_multiple_warnings.h:6:2: warning: "warning3"
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// CHECK:STDERR: 6 | #warning "warning3"
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// CHECK:STDERR: | ^
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// CHECK:STDERR: [CppInteropParseError]
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// CHECK:STDERR: import Cpp library "multiple_errors_and_multiple_warnings.h";
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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import Cpp library "multiple_errors_and_multiple_warnings.h";
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// CHECK:STDOUT: --- fail_import_cpp_file_with_one_error.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: has_error
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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 "one_error.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- fail_import_cpp_file_with_multiple_errors.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: has_error
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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 "multiple_errors.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- import_cpp_file_with_one_warning.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 "one_warning.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- import_cpp_file_with_multiple_warnings.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 "multiple_warnings.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- fail_import_cpp_file_with_one_error_and_one_warning.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: has_error
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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 "one_error_and_one_warning.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- fail_import_cpp_file_with_multiple_errors_and_multiple_warnings.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: has_error
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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 "multiple_errors_and_multiple_warnings.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- import_multiple_cpp_files_with_warnings.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 "one_warning.h"
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// CHECK:STDOUT: import Cpp "multiple_warnings.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: --- fail_import_multiple_cpp_files_with_warnings_and_errors.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: has_error
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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 "one_error_and_one_warning.h"
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// CHECK:STDOUT: import Cpp "multiple_errors_and_multiple_warnings.h"
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// CHECK:STDOUT: }
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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