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https://github.com/carbon-language/carbon-lang.git
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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
4.5 KiB
Plaintext
83 lines
4.5 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/fail_todo_impl_assoc_const.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_todo_impl_assoc_const.carbon
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interface I { let T:! type; }
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// CHECK:STDERR: fail_todo_impl_assoc_const.carbon:[[@LINE+3]]:1: error: semantics TODO: `impl of interface with associated constant T` [SemanticsTodo]
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// CHECK:STDERR: impl bool as I where .T = bool {}
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
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impl bool as I where .T = bool {}
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// CHECK:STDOUT: --- fail_todo_impl_assoc_const.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: %assoc_type: type = assoc_entity_type %I.type, type [template]
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// CHECK:STDOUT: %assoc0: %assoc_type = assoc_entity element0, @I.%T [template]
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// CHECK:STDOUT: %Bool.type: type = fn_type @Bool [template]
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// CHECK:STDOUT: %Bool: %Bool.type = struct_value () [template]
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// CHECK:STDOUT: %.Self: %I.type = bind_symbolic_name .Self [symbolic]
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// CHECK:STDOUT: %.Self.as_wit: <witness> = facet_access_witness %.Self [symbolic]
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// CHECK:STDOUT: %impl.elem0: type = impl_witness_access %.Self.as_wit, element0 [symbolic]
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// CHECK:STDOUT: %I_where.type: type = facet_type <@I where %impl.elem0 = bool> [template]
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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: %Core: <namespace> = namespace file.%Core.import, [template] {
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// CHECK:STDOUT: .Bool = %import_ref
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// CHECK:STDOUT: import Core//prelude
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// CHECK:STDOUT: import Core//prelude/...
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// CHECK:STDOUT: }
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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: .Core = imports.%Core
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// CHECK:STDOUT: .I = %I.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: %I.decl: type = interface_decl @I [template = constants.%I.type] {} {}
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// CHECK:STDOUT: impl_decl @impl [template] {} {
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// CHECK:STDOUT: %bool.make_type.loc16_6: init type = call constants.%Bool() [template = bool]
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// CHECK:STDOUT: %.loc16_6.1: type = value_of_initializer %bool.make_type.loc16_6 [template = bool]
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// CHECK:STDOUT: %.loc16_6.2: type = converted %bool.make_type.loc16_6, %.loc16_6.1 [template = bool]
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// CHECK:STDOUT: %I.ref: type = name_ref I, file.%I.decl [template = constants.%I.type]
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// CHECK:STDOUT: %.Self: %I.type = bind_symbolic_name .Self [symbolic = constants.%.Self]
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// CHECK:STDOUT: %.Self.ref: %I.type = name_ref .Self, %.Self [symbolic = constants.%.Self]
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// CHECK:STDOUT: %T.ref: %assoc_type = name_ref T, @I.%assoc0 [template = constants.%assoc0]
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// CHECK:STDOUT: %.Self.as_wit: <witness> = facet_access_witness %.Self.ref [symbolic = constants.%.Self.as_wit]
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// CHECK:STDOUT: %impl.elem0: type = impl_witness_access %.Self.as_wit, element0 [symbolic = constants.%impl.elem0]
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// CHECK:STDOUT: %bool.make_type.loc16_27: init type = call constants.%Bool() [template = bool]
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// CHECK:STDOUT: %.loc16_27.1: type = value_of_initializer %bool.make_type.loc16_27 [template = bool]
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// CHECK:STDOUT: %.loc16_27.2: type = converted %bool.make_type.loc16_27, %.loc16_27.1 [template = bool]
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// CHECK:STDOUT: %.loc16_16: type = where_expr %.Self [template = constants.%I_where.type] {
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// CHECK:STDOUT: requirement_rewrite %impl.elem0, %.loc16_27.2
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// CHECK:STDOUT: }
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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: %T: type = assoc_const_decl T [template]
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// CHECK:STDOUT: %assoc0: %assoc_type = assoc_entity element0, %T [template = constants.%assoc0]
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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: .T = %assoc0
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// CHECK:STDOUT: witness = (%T)
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: impl @impl: %.loc16_6.2 as %.loc16_16 {
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// CHECK:STDOUT: !members:
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// CHECK:STDOUT: witness = <error>
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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