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https://github.com/carbon-language/carbon-lang.git
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Nicholas BishopandGeoff Romer
54728e47fe
This is a step towards being able to export methods of parameterized classes. When exporting such a method, the decl context should be a `ClassTemplateSpecializationDecl`. Thread the scope's specific ID down from `MapInstIdToClangDeclOrType` and call `ExportClassSpecificToCpp` to create this context. Also add a `context.TODO` to prevent too much code from being exercised with methods of parameterized classes after getting the parent scope, as that would lead to various test crashes. The user-visible effect of this change is that the somewhat mysterious "TODO: non-class non-namespace name scope" error is replaced with "TODO: support exporting member functions of parameterized classes". --------- Co-authored-by: Geoff Romer <gromer@google.com>
110 lines
3.8 KiB
Plaintext
110 lines
3.8 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/generic.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/generic.carbon
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// --- generic_class.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class GenericClass(T: type) {
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var t: T;
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}
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inline Cpp '''
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void FGeneric() {
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Carbon::GenericClass<int> c;
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c.t = 123;
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}
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''';
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// --- specific_alias.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class SpecificClass(T: type) {
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var t: T;
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}
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alias AliasInt = SpecificClass(i32);
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inline Cpp '''
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void FSpecific() {
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Carbon::AliasInt a;
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a.t = 123;
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}
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''';
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// --- fail_unsupported_specific_arg.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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// CHECK:STDERR: ╭─┤ fail_unsupported_specific_arg.carbon:[[@LINE+7]]:1
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// CHECK:STDERR: -> │ class UnsupportedClass(T: type) {
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// CHECK:STDERR: · ━━━━━━━━━━━━┳━━━━━━━━━━━━━━━━━━━━
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// CHECK:STDERR: · ┗━━┫ error: semantics TODO: `failed to map specific type arg to C++`
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// CHECK:STDERR: · ┃ [SemanticsTodo]
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// CHECK:STDERR: ╰────
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// CHECK:STDERR:
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class UnsupportedClass(T: type) {
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var t: T;
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}
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alias AliasEmptyTuple = UnsupportedClass(());
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inline Cpp '''
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void FUnsupported() {
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// CHECK:STDERR: ╭─┤ fail_unsupported_specific_arg.carbon:[[@LINE+14]]:11
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// CHECK:STDERR: -> │ Carbon::AliasEmptyTuple a;
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// CHECK:STDERR: · ┳
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// CHECK:STDERR: · ┗━━┫ error: semantics TODO: `interop with unsupported type`
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// CHECK:STDERR: · ┃ [SemanticsTodo]
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// CHECK:STDERR: ╰────
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// CHECK:STDERR:
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// CHECK:STDERR: ╭─┤ fail_unsupported_specific_arg.carbon:[[@LINE+7]]:11
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// CHECK:STDERR: -> │ Carbon::AliasEmptyTuple a;
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// CHECK:STDERR: · ───────╴╻
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// CHECK:STDERR: · ┗━━┫ error: no type named 'AliasEmptyTuple' in namespace 'Carbon'
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// CHECK:STDERR: · ┃ [CppInteropParseError]
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// CHECK:STDERR: ╰────
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// CHECK:STDERR:
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Carbon::AliasEmptyTuple a;
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a.t = 123;
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}
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''';
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// --- fail_todo_generic_class_method_call.carbon
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library "[[@TEST_NAME]]";
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import Cpp;
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class ClassWithMethod(T: type) {
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// CHECK:STDERR: ╭─┤ fail_todo_generic_class_method_call.carbon:[[@LINE+8]]:3
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// CHECK:STDERR: -> │ fn M(unused ref self) {}
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// CHECK:STDERR: · ┳━━━━━━━━━━━━━━━━━━━━━━
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// CHECK:STDERR: · ┗━━┫ error: semantics TODO:
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// CHECK:STDERR: · ┃ `support exporting member functions of parameterized classes`
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// CHECK:STDERR: · ┃ [SemanticsTodo]
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// CHECK:STDERR: ╰────
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// CHECK:STDERR:
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fn M(unused ref self) {}
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}
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inline Cpp '''
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void FMethodCall() {
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Carbon::ClassWithMethod<int> c;
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// CHECK:STDERR: ╭─┤ fail_todo_generic_class_method_call.carbon:[[@LINE+7]]:5
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// CHECK:STDERR: -> │ c.M();
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// CHECK:STDERR: · ─ ┳
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// CHECK:STDERR: · ┗━━┫ error: no member named 'M' in 'Carbon::Main::ClassWithMethod<int>'
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// CHECK:STDERR: · ┃ [CppInteropParseError]
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// CHECK:STDERR: ╰────
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// CHECK:STDERR:
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c.M();
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}
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''';
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