mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Richard Smith
82ba1a43a1
We import C++ enum types as Carbon class types as adapters for the corresponding builtin integer type, and we import enumerator constants as integer constants of that class type. No operators are supported on such values for now; eventually once we start asking Clang to implement operators on C++-owned types, these types should be handled in the same way. However, they can be converted to the corresponding integer type with `as` via adapter conversion, and integer builtin functions can operate on them.
82 lines
3.6 KiB
Plaintext
82 lines
3.6 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/enum/fixed.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/enum/fixed.carbon
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// --- enum.h
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enum Enum : short { a, b, c };
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// --- import_enum.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "enum.h";
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//@dump-sem-ir-begin
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fn F() {
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let a: Cpp.Enum = Cpp.Enum.a;
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let b: Cpp.Enum = Cpp.b;
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}
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//@dump-sem-ir-end
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// CHECK:STDOUT: --- import_enum.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
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// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
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// CHECK:STDOUT: %Enum: type = class_type @Enum [concrete]
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// CHECK:STDOUT: %pattern_type: type = pattern_type %Enum [concrete]
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// CHECK:STDOUT: %int_0: %Enum = int_value 0 [concrete]
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// CHECK:STDOUT: %int_1: %Enum = int_value 1 [concrete]
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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: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
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// CHECK:STDOUT: .Enum = %Enum.decl
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// CHECK:STDOUT: .b = %int_1
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// CHECK:STDOUT: import Cpp//...
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Enum.decl: type = class_decl @Enum [concrete = constants.%Enum] {} {}
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// CHECK:STDOUT: %int_0: %Enum = int_value 0 [concrete = constants.%int_0]
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// CHECK:STDOUT: %int_1: %Enum = int_value 1 [concrete = constants.%int_1]
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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: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: fn @F() {
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// CHECK:STDOUT: !entry:
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %a.patt: %pattern_type = binding_pattern a [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Cpp.ref.loc8_21: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc8_24: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: %a.ref: %Enum = name_ref a, imports.%int_0 [concrete = constants.%int_0]
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// CHECK:STDOUT: %.loc8: type = splice_block %Enum.ref.loc8_13 [concrete = constants.%Enum] {
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// CHECK:STDOUT: %Cpp.ref.loc8_10: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc8_13: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %a: %Enum = bind_name a, %a.ref
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %b.patt: %pattern_type = binding_pattern b [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Cpp.ref.loc9_21: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %b.ref: %Enum = name_ref b, imports.%int_1 [concrete = constants.%int_1]
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// CHECK:STDOUT: %.loc9: type = splice_block %Enum.ref.loc9 [concrete = constants.%Enum] {
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// CHECK:STDOUT: %Cpp.ref.loc9_10: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc9: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %b: %Enum = bind_name b, %b.ref
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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