mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-02 11:15:50 +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.
64 lines
2.2 KiB
Plaintext
64 lines
2.2 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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//
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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/template_template_param.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/template_template_param.carbon
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// --- templates.h
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template<typename> struct A {};
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template<typename> struct B {};
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template<template<typename> typename, template<typename> typename>
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struct TwoTemplates {};
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// --- fail_todo_valid.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "templates.h";
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//@dump-sem-ir-begin
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// CHECK:STDERR: fail_todo_valid.carbon:[[@LINE+4]]:25: error: semantics TODO: `argument for template template parameter` [SemanticsTodo]
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// CHECK:STDERR: var x: Cpp.TwoTemplates(Cpp.A, Cpp.B);
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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var x: Cpp.TwoTemplates(Cpp.A, Cpp.B);
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//@dump-sem-ir-end
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// --- fail_non_type_argument.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "templates.h";
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// CHECK:STDERR: fail_non_type_argument.carbon:[[@LINE+4]]:25: error: semantics TODO: `argument for template template parameter` [SemanticsTodo]
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// CHECK:STDERR: var x: Cpp.TwoTemplates(Cpp.A, true);
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// CHECK:STDERR: ^~~~~
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// CHECK:STDERR:
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var x: Cpp.TwoTemplates(Cpp.A, true);
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// CHECK:STDOUT: --- fail_todo_valid.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: imports {
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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: name_binding_decl {
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// CHECK:STDOUT: %x.patt: <error> = ref_binding_pattern x [concrete]
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// CHECK:STDOUT: %x.var_patt: <error> = var_pattern %x.patt [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %x.var: ref <error> = var %x.var_patt [concrete = <error>]
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// CHECK:STDOUT: %x: ref <error> = ref_binding x, <error> [concrete = <error>]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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