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carbon-lang/toolchain/check/testdata/interop/cpp/enum/convert.carbon
T
Jon Ross-Perkins 47e551141f Change the package namespace to use the package name (#6495) 
Instead of naming the root namespace `package` (because it's accessed by
the `package` keyword), change it to use the current package name. Note,
buried in the checksum changes,
`toolchain/check/testdata/package_expr/fail_not_found.carbon`:

```
-  // CHECK:STDERR: fail_not_found.carbon:[[@LINE+4]]:16: error: member name `x` not found in `package` [MemberNameNotFoundInInstScope]
+  // CHECK:STDERR: fail_not_found.carbon:[[@LINE+4]]:16: error: member name `x` not found in `Main` [MemberNameNotFoundInInstScope]
```

for:

```
  // CHECK:STDERR:   var y: i32 = package.x;
  // CHECK:STDERR:                ^~~~~~~~~
```

I'll leave it to you if you prefer this; the alternative I see is to
just rename `IsCorePackage` to `IsImportedCorePackage`, and/or change it
to a helper that takes a `Context` and does the right thing with
`parse_tree` (which, I need for `Destroy`-related reasons and was my
default approach).
2025-12-16 01:33:53 +00:00

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// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
// Exceptions. See /LICENSE for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/int.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/interop/cpp/enum/convert.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/interop/cpp/enum/convert.carbon
// --- enum.h
enum Enum : short { a, b, c };
enum Other : short {};
enum DifferentSize : long {};
// --- convert_enum.carbon
library "[[@TEST_NAME]]";
import Cpp library "enum.h";
//@dump-sem-ir-begin
fn F() {
let a: i16 = Cpp.Enum.a as i16;
let b: Cpp.Enum = (42 as i16) as Cpp.Enum;
let c: Cpp.Other = Cpp.a as Cpp.Other;
}
//@dump-sem-ir-end
// --- fail_wrong_type.carbon
library "[[@TEST_NAME]]";
import Cpp library "enum.h";
fn F() {
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `Cpp.Enum` to `i8` with `as` [ConversionFailure]
// CHECK:STDERR: Cpp.Enum.a as i8;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `Cpp.Enum` does not implement interface `Core.As(i8)` [MissingImplInMemberAccessNote]
// CHECK:STDERR: Cpp.Enum.a as i8;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~
// CHECK:STDERR:
Cpp.Enum.a as i8;
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `Cpp.Enum` to `i32` with `as` [ConversionFailure]
// CHECK:STDERR: Cpp.Enum.a as i32;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `Cpp.Enum` does not implement interface `Core.As(i32)` [MissingImplInMemberAccessNote]
// CHECK:STDERR: Cpp.Enum.a as i32;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Cpp.Enum.a as i32;
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `i8` to `Cpp.Enum` with `as` [ConversionFailure]
// CHECK:STDERR: (42 as i8) as Cpp.Enum;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `i8` does not implement interface `Core.As(Cpp.Enum)` [MissingImplInMemberAccessNote]
// CHECK:STDERR: (42 as i8) as Cpp.Enum;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
(42 as i8) as Cpp.Enum;
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `i32` to `Cpp.Enum` with `as` [ConversionFailure]
// CHECK:STDERR: (42 as i32) as Cpp.Enum;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `i32` does not implement interface `Core.As(Cpp.Enum)` [MissingImplInMemberAccessNote]
// CHECK:STDERR: (42 as i32) as Cpp.Enum;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
(42 as i32) as Cpp.Enum;
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+7]]:3: error: cannot convert expression of type `Cpp.Enum` to `Cpp.DifferentSize` with `as` [ConversionFailure]
// CHECK:STDERR: Cpp.a as Cpp.DifferentSize;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_wrong_type.carbon:[[@LINE+4]]:3: note: type `Cpp.Enum` does not implement interface `Core.As(Cpp.DifferentSize)` [MissingImplInMemberAccessNote]
// CHECK:STDERR: Cpp.a as Cpp.DifferentSize;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~
// CHECK:STDERR:
Cpp.a as Cpp.DifferentSize;
}
// CHECK:STDOUT: --- convert_enum.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %F.type: type = fn_type @F [concrete]
// CHECK:STDOUT: %F: %F.type = struct_value () [concrete]
// CHECK:STDOUT: %int_16: Core.IntLiteral = int_value 16 [concrete]
// CHECK:STDOUT: %i16: type = class_type @Int, @Int(%int_16) [concrete]
// CHECK:STDOUT: %pattern_type.2f8: type = pattern_type %i16 [concrete]
// CHECK:STDOUT: %Enum: type = class_type @Enum [concrete]
// CHECK:STDOUT: %int_0.420: %Enum = int_value 0 [concrete]
// CHECK:STDOUT: %int_0.320: %i16 = int_value 0 [concrete]
// CHECK:STDOUT: %pattern_type.ebf: type = pattern_type %Enum [concrete]
// CHECK:STDOUT: %int_42.20e: Core.IntLiteral = int_value 42 [concrete]
// CHECK:STDOUT: %As.type.771: type = facet_type <@As, @As(%i16)> [concrete]
// CHECK:STDOUT: %As.Convert.type.be5: type = fn_type @As.Convert, @As(%i16) [concrete]
// CHECK:STDOUT: %To: Core.IntLiteral = symbolic_binding To, 0 [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.type.be4: type = fn_type @Core.IntLiteral.as.As.impl.Convert, @Core.IntLiteral.as.As.impl(%To) [symbolic]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.b5e: %Core.IntLiteral.as.As.impl.Convert.type.be4 = struct_value () [symbolic]
// CHECK:STDOUT: %As.impl_witness.d70: <witness> = impl_witness imports.%As.impl_witness_table.026, @Core.IntLiteral.as.As.impl(%int_16) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.type.432: type = fn_type @Core.IntLiteral.as.As.impl.Convert, @Core.IntLiteral.as.As.impl(%int_16) [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.f1b: %Core.IntLiteral.as.As.impl.Convert.type.432 = struct_value () [concrete]
// CHECK:STDOUT: %As.facet: %As.type.771 = facet_value Core.IntLiteral, (%As.impl_witness.d70) [concrete]
// CHECK:STDOUT: %.462: type = fn_type_with_self_type %As.Convert.type.be5, %As.facet [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.bound: <bound method> = bound_method %int_42.20e, %Core.IntLiteral.as.As.impl.Convert.f1b [concrete]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.specific_fn: <specific function> = specific_function %Core.IntLiteral.as.As.impl.Convert.f1b, @Core.IntLiteral.as.As.impl.Convert(%int_16) [concrete]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %int_42.20e, %Core.IntLiteral.as.As.impl.Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_42.a0e: %i16 = int_value 42 [concrete]
// CHECK:STDOUT: %int_42.c3a: %Enum = int_value 42 [concrete]
// CHECK:STDOUT: %Other: type = class_type @Other [concrete]
// CHECK:STDOUT: %pattern_type.c06: type = pattern_type %Other [concrete]
// CHECK:STDOUT: %int_0.fa2: %Other = int_value 0 [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Cpp: <namespace> = namespace file.%Cpp.import_cpp, [concrete] {
// CHECK:STDOUT: .Enum = %Enum.decl
// CHECK:STDOUT: .Other = %Other.decl
// CHECK:STDOUT: .a = %int_0
// CHECK:STDOUT: import Cpp//...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Enum.decl: type = class_decl @Enum [concrete = constants.%Enum] {} {}
// CHECK:STDOUT: %int_0: %Enum = int_value 0 [concrete = constants.%int_0.420]
// CHECK:STDOUT: %Core.import_ref.452: @Core.IntLiteral.as.As.impl.%Core.IntLiteral.as.As.impl.Convert.type (%Core.IntLiteral.as.As.impl.Convert.type.be4) = 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.b5e)]
// CHECK:STDOUT: %As.impl_witness_table.026 = impl_witness_table (%Core.import_ref.452), @Core.IntLiteral.as.As.impl [concrete]
// CHECK:STDOUT: %Other.decl: type = class_decl @Other [concrete = constants.%Other] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [concrete = constants.%F] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %a.patt: %pattern_type.2f8 = value_binding_pattern a [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc8: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %Enum.ref.loc8: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
// CHECK:STDOUT: %a.ref.loc8: %Enum = name_ref a, imports.%int_0 [concrete = constants.%int_0.420]
// CHECK:STDOUT: %int_16.loc8_30: Core.IntLiteral = int_value 16 [concrete = constants.%int_16]
// CHECK:STDOUT: %i16.loc8_30: type = class_type @Int, @Int(constants.%int_16) [concrete = constants.%i16]
// CHECK:STDOUT: %.loc8_27.1: %i16 = as_compatible %a.ref.loc8 [concrete = constants.%int_0.320]
// CHECK:STDOUT: %.loc8_27.2: %i16 = converted %a.ref.loc8, %.loc8_27.1 [concrete = constants.%int_0.320]
// CHECK:STDOUT: %.loc8_10: type = splice_block %i16.loc8_10 [concrete = constants.%i16] {
// CHECK:STDOUT: %int_16.loc8_10: Core.IntLiteral = int_value 16 [concrete = constants.%int_16]
// CHECK:STDOUT: %i16.loc8_10: type = class_type @Int, @Int(constants.%int_16) [concrete = constants.%i16]
// CHECK:STDOUT: }
// CHECK:STDOUT: %a: %i16 = value_binding a, %.loc8_27.2
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %b.patt: %pattern_type.ebf = value_binding_pattern b [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %int_42: Core.IntLiteral = int_value 42 [concrete = constants.%int_42.20e]
// CHECK:STDOUT: %int_16.loc9: Core.IntLiteral = int_value 16 [concrete = constants.%int_16]
// CHECK:STDOUT: %i16.loc9: type = class_type @Int, @Int(constants.%int_16) [concrete = constants.%i16]
// CHECK:STDOUT: %impl.elem0: %.462 = impl_witness_access constants.%As.impl_witness.d70, element0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.f1b]
// CHECK:STDOUT: %bound_method.loc9_25.1: <bound method> = bound_method %int_42, %impl.elem0 [concrete = constants.%Core.IntLiteral.as.As.impl.Convert.bound]
// 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]
// CHECK:STDOUT: %bound_method.loc9_25.2: <bound method> = bound_method %int_42, %specific_fn [concrete = constants.%bound_method]
// CHECK:STDOUT: %Core.IntLiteral.as.As.impl.Convert.call: init %i16 = call %bound_method.loc9_25.2(%int_42) [concrete = constants.%int_42.a0e]
// CHECK:STDOUT: %.loc9_25.1: %i16 = value_of_initializer %Core.IntLiteral.as.As.impl.Convert.call [concrete = constants.%int_42.a0e]
// CHECK:STDOUT: %.loc9_25.2: %i16 = converted %int_42, %.loc9_25.1 [concrete = constants.%int_42.a0e]
// CHECK:STDOUT: %Cpp.ref.loc9_36: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %Enum.ref.loc9_39: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
// CHECK:STDOUT: %.loc9_33.1: %Enum = as_compatible %.loc9_25.2 [concrete = constants.%int_42.c3a]
// CHECK:STDOUT: %.loc9_33.2: %Enum = converted %.loc9_25.2, %.loc9_33.1 [concrete = constants.%int_42.c3a]
// CHECK:STDOUT: %.loc9_13: type = splice_block %Enum.ref.loc9_13 [concrete = constants.%Enum] {
// CHECK:STDOUT: %Cpp.ref.loc9_10: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %Enum.ref.loc9_13: type = name_ref Enum, imports.%Enum.decl [concrete = constants.%Enum]
// CHECK:STDOUT: }
// CHECK:STDOUT: %b: %Enum = value_binding b, %.loc9_33.2
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %c.patt: %pattern_type.c06 = value_binding_pattern c [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Cpp.ref.loc10_22: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %a.ref.loc10: %Enum = name_ref a, imports.%int_0 [concrete = constants.%int_0.420]
// CHECK:STDOUT: %Cpp.ref.loc10_31: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %Other.ref.loc10_34: type = name_ref Other, imports.%Other.decl [concrete = constants.%Other]
// CHECK:STDOUT: %.loc10_28.1: %Other = as_compatible %a.ref.loc10 [concrete = constants.%int_0.fa2]
// CHECK:STDOUT: %.loc10_28.2: %Other = converted %a.ref.loc10, %.loc10_28.1 [concrete = constants.%int_0.fa2]
// CHECK:STDOUT: %.loc10_13: type = splice_block %Other.ref.loc10_13 [concrete = constants.%Other] {
// CHECK:STDOUT: %Cpp.ref.loc10_10: <namespace> = name_ref Cpp, imports.%Cpp [concrete = imports.%Cpp]
// CHECK:STDOUT: %Other.ref.loc10_13: type = name_ref Other, imports.%Other.decl [concrete = constants.%Other]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c: %Other = value_binding c, %.loc10_28.2
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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