mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Dana Jansens
f8dd4d85bf
An impl in a different scope, with the same parameters, will overlap and get diagnosed for that later by the [prioritization rule](https://docs.carbon-lang.dev/docs/design/generics/details.html#prioritization-rule), if they are not in a match_first block. But they are not considered as redeclarations. See [proposal p5366](https://github.com/carbon-language/carbon-lang/blob/62b94f79322039acc3fc8e175896a64a32df470e/proposals/p5366.md) for the rule.
190 lines
12 KiB
Plaintext
190 lines
12 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/enum/convert.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/convert.carbon
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// --- enum.h
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enum Enum : short { a, b, c };
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enum Other : short {};
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enum DifferentSize : long {};
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// --- convert_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 unused a: i16 = Cpp.Enum.a as i16;
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let unused b: Cpp.Enum = (42 as i16) as Cpp.Enum;
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let unused c: Cpp.Other = Cpp.a as Cpp.Other;
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}
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//@dump-sem-ir-end
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// --- fail_wrong_type.carbon
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library "[[@TEST_NAME]]";
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import Cpp library "enum.h";
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fn F() {
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `Cpp.Enum` to `i8` with `as` [ConversionFailure]
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// CHECK:STDERR: Cpp.Enum.a as i8;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `Cpp.Enum` does not implement interface `Core.As(i8)` [MissingImplInMemberAccessInContext]
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// CHECK:STDERR: Cpp.Enum.a as i8;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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Cpp.Enum.a as i8;
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `Cpp.Enum` to `i32` with `as` [ConversionFailure]
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// CHECK:STDERR: Cpp.Enum.a as i32;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `Cpp.Enum` does not implement interface `Core.As(i32)` [MissingImplInMemberAccessInContext]
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// CHECK:STDERR: Cpp.Enum.a as i32;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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Cpp.Enum.a as i32;
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `i8` to `Cpp.Enum` with `as` [ConversionFailure]
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// CHECK:STDERR: (42 as i8) as Cpp.Enum;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `i8` does not implement interface `Core.As(Cpp.Enum)` [MissingImplInMemberAccessInContext]
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// CHECK:STDERR: (42 as i8) as Cpp.Enum;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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(42 as i8) as Cpp.Enum;
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `i32` to `Cpp.Enum` with `as` [ConversionFailure]
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// CHECK:STDERR: (42 as i32) as Cpp.Enum;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `i32` does not implement interface `Core.As(Cpp.Enum)` [MissingImplInMemberAccessInContext]
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// CHECK:STDERR: (42 as i32) as Cpp.Enum;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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(42 as i32) as Cpp.Enum;
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `Cpp.Enum` to `Cpp.DifferentSize` with `as` [ConversionFailure]
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// CHECK:STDERR: Cpp.a as Cpp.DifferentSize;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `Cpp.Enum` does not implement interface `Core.As(Cpp.DifferentSize)` [MissingImplInMemberAccessInContext]
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// CHECK:STDERR: Cpp.a as Cpp.DifferentSize;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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Cpp.a as Cpp.DifferentSize;
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}
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// CHECK:STDOUT: --- convert_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: %int_16: Core.IntLiteral = int_value 16 [concrete]
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// CHECK:STDOUT: %i16: type = class_type @Int, @Int(%int_16) [concrete]
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// CHECK:STDOUT: %pattern_type.2f8: type = pattern_type %i16 [concrete]
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// CHECK:STDOUT: %Enum: type = class_type @Enum [concrete]
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// CHECK:STDOUT: %int_0.420: %Enum = int_value 0 [concrete]
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// CHECK:STDOUT: %int_0.320: %i16 = int_value 0 [concrete]
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// CHECK:STDOUT: %pattern_type.ebf: type = pattern_type %Enum [concrete]
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// CHECK:STDOUT: %int_42.20e: Core.IntLiteral = int_value 42 [concrete]
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// CHECK:STDOUT: %As.type.359: type = facet_type <@As, @As(%i16)> [concrete]
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// CHECK:STDOUT: %To: Core.IntLiteral = symbolic_binding To, 0 [symbolic]
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// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.type.38c: type = fn_type @Core.IntLiteral.as.As.impl.Convert, @Core.IntLiteral.as.As.impl(%To) [symbolic]
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// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.8f0: %Core.IntLiteral.as.As.impl.Convert.type.38c = struct_value () [symbolic]
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// CHECK:STDOUT: %As.impl_witness.e74: <witness> = impl_witness imports.%As.impl_witness_table.2cc, @Core.IntLiteral.as.As.impl(%int_16) [concrete]
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// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.type.ae5: type = fn_type @Core.IntLiteral.as.As.impl.Convert, @Core.IntLiteral.as.As.impl(%int_16) [concrete]
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// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.e16: %Core.IntLiteral.as.As.impl.Convert.type.ae5 = struct_value () [concrete]
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// CHECK:STDOUT: %As.facet: %As.type.359 = facet_value Core.IntLiteral, (%As.impl_witness.e74) [concrete]
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// CHECK:STDOUT: %As.WithSelf.Convert.type.f92: type = fn_type @As.WithSelf.Convert, @As.WithSelf(%i16, %As.facet) [concrete]
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// CHECK:STDOUT: %.a72: type = fn_type_with_self_type %As.WithSelf.Convert.type.f92, %As.facet [concrete]
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// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.bound: <bound method> = bound_method %int_42.20e, %Core.IntLiteral.as.As.impl.Convert.e16 [concrete]
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// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.e16, @Core.IntLiteral.as.As.impl.Convert(%int_16) [concrete]
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// CHECK:STDOUT: %bound_method: <bound method> = bound_method %int_42.20e, %Core.IntLiteral.as.As.impl.Convert.specific_fn [concrete]
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// CHECK:STDOUT: %int_42.a0e: %i16 = int_value 42 [concrete]
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// CHECK:STDOUT: %int_42.c3a: %Enum = int_value 42 [concrete]
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// CHECK:STDOUT: %Other: type = class_type @Other [concrete]
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// CHECK:STDOUT: %pattern_type.c06: type = pattern_type %Other [concrete]
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// CHECK:STDOUT: %int_0.fa2: %Other = int_value 0 [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: .Other = %Other.decl
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// CHECK:STDOUT: .a = %int_0
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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_0.420]
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// CHECK:STDOUT: %Core.import_ref.d74: @Core.IntLiteral.as.As.impl.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.38c) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Core.IntLiteral.as.As.impl.%Core.IntLiteral.as.As.impl.Convert (constants.%Core.IntLiteral.as.As.impl.Convert.8f0)]
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// CHECK:STDOUT: %As.impl_witness_table.2cc = impl_witness_table (%Core.import_ref.d74), @Core.IntLiteral.as.As.impl [concrete]
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// CHECK:STDOUT: %Other.decl: type = class_decl @Other [concrete = constants.%Other] {} {}
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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.2f8 = value_binding_pattern a [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Cpp.ref.loc8: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc8: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: %a.ref.loc8: %Enum = name_ref a, imports.%int_0 [concrete = constants.%int_0.420]
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// CHECK:STDOUT: %i16.loc8_37: type = type_literal constants.%i16 [concrete = constants.%i16]
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// CHECK:STDOUT: %.loc8_34.1: %i16 = as_compatible %a.ref.loc8 [concrete = constants.%int_0.320]
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// CHECK:STDOUT: %.loc8_34.2: %i16 = converted %a.ref.loc8, %.loc8_34.1 [concrete = constants.%int_0.320]
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// CHECK:STDOUT: %i16.loc8_17: type = type_literal constants.%i16 [concrete = constants.%i16]
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// CHECK:STDOUT: %a: %i16 = value_binding a, %.loc8_34.2
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %b.patt: %pattern_type.ebf = value_binding_pattern b [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %int_42: Core.IntLiteral = int_value 42 [concrete = constants.%int_42.20e]
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// CHECK:STDOUT: %i16.loc9: type = type_literal constants.%i16 [concrete = constants.%i16]
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// CHECK:STDOUT: %impl.elem0: %.a72 = impl_witness_access constants.%As.impl_witness.e74, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.e16]
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// CHECK:STDOUT: %bound_method.loc9_32.1: <bound method> = bound_method %int_42, %impl.elem0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound]
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// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Core.IntLiteral.as.As.impl.Convert(constants.%int_16) [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.specific_fn]
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// CHECK:STDOUT: %bound_method.loc9_32.2: <bound method> = bound_method %int_42, %specific_fn [concrete = constants.%bound_method]
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// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.call: init %i16 = call %bound_method.loc9_32.2(%int_42) [concrete = constants.%int_42.a0e]
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// CHECK:STDOUT: %.loc9_32.1: %i16 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call [concrete = constants.%int_42.a0e]
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// CHECK:STDOUT: %.loc9_32.2: %i16 = converted %int_42, %.loc9_32.1 [concrete = constants.%int_42.a0e]
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// CHECK:STDOUT: %Cpp.ref.loc9_43: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc9_46: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: %.loc9_40.1: %Enum = as_compatible %.loc9_32.2 [concrete = constants.%int_42.c3a]
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// CHECK:STDOUT: %.loc9_40.2: %Enum = converted %.loc9_32.2, %.loc9_40.1 [concrete = constants.%int_42.c3a]
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// CHECK:STDOUT: %.loc9_20: type = splice_block %Enum.ref.loc9_20 [concrete = constants.%Enum] {
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// CHECK:STDOUT: %Cpp.ref.loc9_17: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Enum.ref.loc9_20: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %b: %Enum = value_binding b, %.loc9_40.2
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// CHECK:STDOUT: name_binding_decl {
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// CHECK:STDOUT: %c.patt: %pattern_type.c06 = value_binding_pattern c [concrete]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Cpp.ref.loc10_29: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %a.ref.loc10: %Enum = name_ref a, imports.%int_0 [concrete = constants.%int_0.420]
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// CHECK:STDOUT: %Cpp.ref.loc10_38: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Other.ref.loc10_41: type = name_ref Other, imports.%Other.decl [concrete = constants.%Other]
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// CHECK:STDOUT: %.loc10_35.1: %Other = as_compatible %a.ref.loc10 [concrete = constants.%int_0.fa2]
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// CHECK:STDOUT: %.loc10_35.2: %Other = converted %a.ref.loc10, %.loc10_35.1 [concrete = constants.%int_0.fa2]
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// CHECK:STDOUT: %.loc10_20: type = splice_block %Other.ref.loc10_20 [concrete = constants.%Other] {
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// CHECK:STDOUT: %Cpp.ref.loc10_17: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
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// CHECK:STDOUT: %Other.ref.loc10_20: type = name_ref Other, imports.%Other.decl [concrete = constants.%Other]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %c: %Other = value_binding c, %.loc10_35.2
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// CHECK:STDOUT: return
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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