mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-03 10:45:48 +01:00
Dana Jansens
fcae9610bd
The type `type` is now a `FacetType` inst with no constraints. This brings the model implemented in the toolchain into better alignment with the language design. The `SemIR::TypeType` struct remains as a scope for holding the `TypeInstId`, `ConstantId`, and `TypeId` constants, but is not an `InstKind` anymore. The `TypeType` inst looks a lot like singletons, but there are many `FacetType` insts so it doesn't quite fit that model. So we put it alongside singletons with a fixed inst id but refer to it as a more general "builtin" inst that is not a singleton. `Namespace::PackageInstId` is similar, and we group it with `TypeType` conceptually as another builtin instruction with a fixed id. No conversion is needed anymore to use a `type` as a facet, since types also have a `FacetType` type. This simplifies and removes a number of helpers and branches throughout the code. The `TypeType` inst is now part of the constant store, so we end up printing it in the constants block in every test. But it's also named `type` rather than `%type` to preserve the majority of existing formatting behaviour, though this does look different from other constants. Assisted-by: Opus 5 was used to generate a first draft and validate the refactoring. Though nearly everything non-trivial the tool wrote has been modified or rewritten.
113 lines
5.0 KiB
Plaintext
113 lines
5.0 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/none.carbon
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// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
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// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
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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/impl/fail_alias.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/impl/fail_alias.carbon
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interface I {}
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class C {}
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alias AI = I;
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alias AC = C;
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impl AC as AI {}
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// CHECK:STDERR: fail_alias.carbon:[[@LINE+7]]:1: error: redefinition of `impl AC as AI` [ImplRedefinition]
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// CHECK:STDERR: impl AC as AI {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~
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// CHECK:STDERR: fail_alias.carbon:[[@LINE-5]]:1: note: previous definition was here [ImplPreviousDefinition]
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// CHECK:STDERR: impl AC as AI {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~
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// CHECK:STDERR:
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impl AC as AI {}
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// CHECK:STDOUT: --- fail_alias.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: type: type = facet_type <type> [concrete]
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// CHECK:STDOUT: %I.type: type = facet_type <@I> [concrete]
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// CHECK:STDOUT: %Self: %I.type = symbolic_binding Self, 0 [symbolic]
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// CHECK:STDOUT: %C: type = class_type @C [concrete]
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// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
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// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
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// CHECK:STDOUT: %.b7f: <witness> = impl_self_witness %C, @I [concrete]
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// CHECK:STDOUT: %I.impl_witness: <witness> = impl_witness @C.as.I.impl.e103db.1.%I.impl_witness_table [concrete]
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// CHECK:STDOUT: %I.facet: %I.type = facet_value %C, (%I.impl_witness) [concrete]
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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: package: <namespace> = namespace [concrete] {
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// CHECK:STDOUT: .I = %I.decl
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// CHECK:STDOUT: .C = %C.decl
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// CHECK:STDOUT: .AI = %AI
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// CHECK:STDOUT: .AC = %AC
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %I.decl: type = interface_decl @I [concrete = constants.%I.type] {} {}
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// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
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// CHECK:STDOUT: %I.ref: type = name_ref I, %I.decl [concrete = constants.%I.type]
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// CHECK:STDOUT: %AI: type = alias_binding AI, %I.ref [concrete = constants.%I.type]
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// CHECK:STDOUT: %C.ref: type = name_ref C, %C.decl [concrete = constants.%C]
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// CHECK:STDOUT: %AC: type = alias_binding AC, %C.ref [concrete = constants.%C]
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// CHECK:STDOUT: impl_decl @C.as.I.impl.e103db.1 [concrete] {} {
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// CHECK:STDOUT: %AC.ref: type = name_ref AC, file.%AC [concrete = constants.%C]
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// CHECK:STDOUT: %AI.ref: type = name_ref AI, file.%AI [concrete = constants.%I.type]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %.loc21: <witness> = impl_self_witness @C.as.I.impl.e103db.1.%AC.ref, @I [concrete = constants.%.b7f]
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// CHECK:STDOUT: impl_decl @C.as.I.impl.e103db.2 [concrete] {} {
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// CHECK:STDOUT: %AC.ref: type = name_ref AC, file.%AC [concrete = constants.%C]
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// CHECK:STDOUT: %AI.ref: type = name_ref AI, file.%AI [concrete = constants.%I.type]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %.loc30: <witness> = impl_self_witness @C.as.I.impl.e103db.2.%AC.ref, @I [concrete = constants.%.b7f]
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: interface @I {
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// CHECK:STDOUT: %Self: %I.type = symbolic_binding Self, 0 [symbolic = constants.%Self]
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// CHECK:STDOUT: %I.WithSelf.decl = interface_with_self_decl @I [concrete]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = %Self
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// CHECK:STDOUT: witness = ()
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// CHECK:STDOUT:
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// CHECK:STDOUT: !requires:
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: impl @C.as.I.impl.e103db.1: %AC.ref as %AI.ref {
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// CHECK:STDOUT: %I.impl_witness_table = impl_witness_table (), @C.as.I.impl.e103db.1 [concrete]
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// CHECK:STDOUT: %I.impl_witness: <witness> = impl_witness %I.impl_witness_table [concrete = constants.%I.impl_witness]
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: extend %AI.ref
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// CHECK:STDOUT: witness = %I.impl_witness
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: impl @C.as.I.impl.e103db.2: %AC.ref as %AI.ref {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: extend %AI.ref
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// CHECK:STDOUT: witness = <error>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @C {
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// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
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// CHECK:STDOUT: complete_type_witness = %complete_type
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// CHECK:STDOUT:
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: .Self = constants.%C
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: specific @I.WithSelf(constants.%Self) {
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// CHECK:STDOUT: !definition:
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: specific @I.WithSelf(constants.%I.facet) {
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// CHECK:STDOUT: !definition:
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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