mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-30 08:35:00 +01:00
Richard Smith
6b28213b36
Expose C++ class templates, variable templates, alias templates, and concepts as callable values in Carbon, and map calls to them into template-id formation, mirroring how Carbon generics behave. For now, only type template parameters are supported; non-type and template template parameters produce a TODO error.
39 lines
1.3 KiB
Plaintext
39 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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// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/convert.carbon
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// EXTRA-ARGS: --clang-arg=--std=c++20
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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/template/generic_call.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/template/generic_call.carbon
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// --- header.h
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struct X {};
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template<typename T> struct S {};
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// --- fail_todo_generic_call.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "header.h";
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fn F[T:! type](x: T) {
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// TODO: This should be treated as being template-dependent on T,
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// and we should perform the call during monomorphization.
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// CHECK:STDERR: fail_todo_generic_call.carbon:[[@LINE+4]]:16: error: semantics TODO: `unsupported type used as template argument` [SemanticsTodo]
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// CHECK:STDERR: var v: Cpp.S(T);
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// CHECK:STDERR: ^
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// CHECK:STDERR:
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var v: Cpp.S(T);
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}
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fn G() {
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F({} as Cpp.X);
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}
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