mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-27 20:20:09 +01:00
Richard Smith
917856aff7
* For Carbon `base class C`, export as a regular C++ class. * For Carbon `class C`, export with the C++ `final` keyword attribute. * For Carbon `abstract C`, mark the destructor as pure virtual in cases where no member function is abstract, or emit an error if the destructor is not virtual. To support the final point, mark the destructor of an exported class as virtual if it overrides a virtual destructor from the base class. In passing, fix a crash exporting fields if the class has an invalid base type.
141 lines
3.3 KiB
Plaintext
141 lines
3.3 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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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.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/field.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/field.carbon
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// --- field.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class A {
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var x: i32;
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var y: i32;
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}
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inline Cpp '''
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void F() {
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Carbon::A a;
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a.x = 12;
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a.y = 34;
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}
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''';
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// --- field_inheritence.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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base class A {
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var x: i32;
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}
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class B {
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extend base: A;
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var y: i32;
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}
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inline Cpp '''
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void F() {
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Carbon::B b;
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b.x = 12;
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b.y = 34;
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}
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''';
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// --- fail_nonexistent_field.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class A {}
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inline Cpp '''
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void F() {
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Carbon::A a;
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// CHECK:STDERR: fail_nonexistent_field.carbon:[[@LINE+4]]:5: error: no member named 'x' in 'Carbon::A' [CppInteropParseError]
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// CHECK:STDERR: 13 | a.x = 12;
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// CHECK:STDERR: | ~ ^
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// CHECK:STDERR:
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a.x = 12;
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// CHECK:STDERR: fail_nonexistent_field.carbon:[[@LINE+4]]:5: error: no member named 'y' in 'Carbon::A' [CppInteropParseError]
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// CHECK:STDERR: 18 | a.y = 34;
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// CHECK:STDERR: | ~ ^
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// CHECK:STDERR:
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a.y = 34;
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}
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''';
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// --- fail_unsupported_field_type.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class A {
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// CHECK:STDERR: fail_unsupported_field_type.carbon:[[@LINE+4]]:7: error: semantics TODO: `failed to map Carbon type to C++` [SemanticsTodo]
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// CHECK:STDERR: var x: ();
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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var x: ();
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// CHECK:STDERR: fail_unsupported_field_type.carbon:[[@LINE+4]]:7: error: semantics TODO: `failed to map Carbon type to C++` [SemanticsTodo]
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// CHECK:STDERR: var y: ();
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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var y: ();
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}
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inline Cpp '''
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void F() {
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Carbon::A a;
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// CHECK:STDERR: fail_unsupported_field_type.carbon:[[@LINE+4]]:5: error: no member named 'x' in 'Carbon::A' [CppInteropParseError]
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// CHECK:STDERR: 24 | a.x;
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// CHECK:STDERR: | ~ ^
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// CHECK:STDERR:
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a.x;
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// CHECK:STDERR: fail_unsupported_field_type.carbon:[[@LINE+4]]:5: error: no member named 'y' in 'Carbon::A' [CppInteropParseError]
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// CHECK:STDERR: 29 | a.y;
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// CHECK:STDERR: | ~ ^
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// CHECK:STDERR:
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a.y;
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}
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''';
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// --- fail_adapter.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class A {
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adapt ();
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}
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inline Cpp '''
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void F() {
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Carbon::A a;
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// CHECK:STDERR: fail_adapter.carbon:[[@LINE+4]]:5: error: no member named 'x' in 'Carbon::A' [CppInteropParseError]
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// CHECK:STDERR: 15 | a.x = 12;
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// CHECK:STDERR: | ~ ^
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// CHECK:STDERR:
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a.x = 12;
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}
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''';
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// --- fail_invalid.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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// This should not cause a crash.
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class A {
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// CHECK:STDERR: fail_invalid.carbon:[[@LINE+4]]:16: error: name `Whoops` not found [NameNotFound]
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// CHECK:STDERR: extend base: Whoops;
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// CHECK:STDERR: ^~~~~~
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// CHECK:STDERR:
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extend base: Whoops;
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}
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inline Cpp '''
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Carbon::A x;
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''';
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