Files
carbon-lang/toolchain/check/testdata/impl/fail_extend_partially_defined_interface.carbon
T
c5fd8f42b8 ImplWitness (#4679)
* 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>
2025-01-02 23:03:11 +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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/impl/fail_extend_partially_defined_interface.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/fail_extend_partially_defined_interface.carbon
interface I {
class C {
// CHECK:STDERR: fail_extend_partially_defined_interface.carbon:[[@LINE+10]]:5: error: implementation of undefined interface I [ImplOfUndefinedInterface]
// CHECK:STDERR: extend impl as I;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
// CHECK:STDERR: fail_extend_partially_defined_interface.carbon:[[@LINE-5]]:1: note: interface is currently being defined [InterfaceUndefinedWithinDefinition]
// CHECK:STDERR: interface I {
// CHECK:STDERR: ^~~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_extend_partially_defined_interface.carbon:[[@LINE+3]]:5: error: impl declared but not defined [MissingImplDefinition]
// CHECK:STDERR: extend impl as I;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~
extend impl as I;
}
}
// CHECK:STDOUT: --- fail_extend_partially_defined_interface.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %I.type: type = facet_type <@I> [template]
// CHECK:STDOUT: %Self: %I.type = bind_symbolic_name Self, 0 [symbolic]
// CHECK:STDOUT: %C.1: type = class_type @C [template]
// CHECK:STDOUT: %C.2: type = class_type @C, @C(%Self) [symbolic]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [template]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .I = %I.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %I.decl: type = interface_decl @I [template = constants.%I.type] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @I {
// CHECK:STDOUT: %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT: %C.decl: type = class_decl @C [template = constants.%C.1] {} {}
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: witness = ()
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic impl @impl(@I.%Self: %I.type) {
// CHECK:STDOUT: %Self: %I.type = bind_symbolic_name Self, 0 [symbolic = %Self (constants.%Self)]
// CHECK:STDOUT: %C: type = class_type @C, @C(%Self) [symbolic = %C (constants.%C.2)]
// CHECK:STDOUT:
// CHECK:STDOUT: impl: %Self.ref as %I.ref;
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic class @C(@I.%Self: %I.type) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT:
// CHECK:STDOUT: class {
// CHECK:STDOUT: impl_decl @impl [template] {} {
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%C.2 [symbolic = %C (constants.%C.2)]
// CHECK:STDOUT: %I.ref: type = name_ref I, file.%I.decl [template = constants.%I.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc23: type = specific_constant @impl.%I.ref, @impl(constants.%Self) [template = constants.%I.type]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [template = constants.%complete_type]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C.2
// CHECK:STDOUT: extend %.loc23
// CHECK:STDOUT: has_error
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @C(constants.%Self) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @impl(constants.%Self) {
// CHECK:STDOUT: %Self => constants.%Self
// CHECK:STDOUT: %C => constants.%C.2
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @C(@impl.%Self) {}
// CHECK:STDOUT: