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c5fd8f42b8
* Change `InterfaceWitness` -> `ImplWitness` * Include a `SpecificId` in the `ImplWitness`. This allows the `InstBlock` it contains to have its own identity, allowing it to be changed as the impl is processed. Evaluation only updates the specific. * Create the `ImplWitness` at the start of the impl definition. In the future, this will be populated with the values of non-function associated constants. For now, it starts full of invalid instruction ids. * Implements the model suggested in #4672 . Note that the non-SemIR testdata changes are to these file: * `toolchain/check/testdata/impl/lookup/fail_todo_undefined_impl.carbon` * `toolchain/check/testdata/struct/import.carbon` * `toolchain/check/testdata/tuple/import.carbon` The last two are due to an import of generics bug exposed by this PR, which will be fixed in a follow-on. --------- Co-authored-by: Josh L <josh11b@users.noreply.github.com> Co-authored-by: Richard Smith <richard@metafoo.co.uk>
83 lines
3.6 KiB
Plaintext
83 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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// 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/no_prelude/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/no_prelude/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+6]]: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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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: %I.type: type = facet_type <@I> [template]
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// CHECK:STDOUT: %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
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// CHECK:STDOUT: %C: type = class_type @C [template]
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// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [template]
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// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [template]
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// CHECK:STDOUT: %impl_witness: <witness> = impl_witness () [template]
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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 [template] {
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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 [template = constants.%I.type] {} {}
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// CHECK:STDOUT: %C.decl: type = class_decl @C [template = constants.%C] {} {}
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// CHECK:STDOUT: %I.ref: type = name_ref I, %I.decl [template = constants.%I.type]
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// CHECK:STDOUT: %AI: type = bind_alias AI, %I.decl [template = constants.%I.type]
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// CHECK:STDOUT: %C.ref: type = name_ref C, %C.decl [template = constants.%C]
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// CHECK:STDOUT: %AC: type = bind_alias AC, %C.decl [template = constants.%C]
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// CHECK:STDOUT: impl_decl @impl [template] {} {
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// CHECK:STDOUT: %AC.ref.loc17: type = name_ref AC, file.%AC [template = constants.%C]
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// CHECK:STDOUT: %AI.ref.loc17: type = name_ref AI, file.%AI [template = constants.%I.type]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %impl_witness: <witness> = impl_witness () [template = constants.%impl_witness]
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// CHECK:STDOUT: impl_decl @impl [template] {} {
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// CHECK:STDOUT: %AC.ref.loc25: type = name_ref AC, file.%AC [template = constants.%C]
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// CHECK:STDOUT: %AI.ref.loc25: type = name_ref AI, file.%AI [template = constants.%I.type]
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// CHECK:STDOUT: }
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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 = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
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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:
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// CHECK:STDOUT: impl @impl: %AC.ref.loc17 as %AI.ref.loc17 {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: witness = file.%impl_witness
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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 %empty_struct_type [template = constants.%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: complete_type_witness = %complete_type
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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