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https://github.com/carbon-language/carbon-lang.git
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Dana Jansens
14998d6045
Propagate error state in an `extend impl` declaration out to the enclosing scope. We can do this generically in `ApplyExtendImplAs` so we don't have to do it explicitly in other places. Collapse `DiagnoseExtendImplOutsideClass` into `ApplyExtendImplAs` as it had only the one caller and is very small, so this simplifies the code, making `ApplyExtendImplAs` a clear set of diagnostics. And push the construction of the SpecificConstant down into `ApplyExtendImplAs` so it is only constructed if it's needed, instead of constructing it and throwing it away in error cases. Ensure any error in the declaration results in the witness being an ErrorInst so the impl will not be used in impl lookup. This simplifies some branches by combining them into a single if statement. This is part of #6420 which is being split up into a chain of smaller PRs. It is based on #6467.
69 lines
3.2 KiB
Plaintext
69 lines
3.2 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/int.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_extend_non_interface.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_extend_non_interface.carbon
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class C {
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// CHECK:STDERR: fail_extend_non_interface.carbon:[[@LINE+4]]:3: error: impl as non-facet type `i32` [ImplAsNonFacetType]
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// CHECK:STDERR: extend impl as i32;
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// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~
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// CHECK:STDERR:
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extend impl as i32;
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}
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// CHECK:STDOUT: --- fail_extend_non_interface.carbon
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// CHECK:STDOUT:
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// CHECK:STDOUT: constants {
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// CHECK:STDOUT: %C: type = class_type @C [concrete]
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// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
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// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
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// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
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// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
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// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
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// CHECK:STDOUT: %complete_type.357: <witness> = complete_type_witness %empty_struct_type [concrete]
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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, [concrete] {
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// CHECK:STDOUT: .Int = %Core.Int
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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: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
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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: .Core = imports.%Core
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// CHECK:STDOUT: .C = %C.decl
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %Core.import = import Core
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// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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// CHECK:STDOUT: impl @C.as.<error>.impl: %Self.ref as %i32;
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// CHECK:STDOUT:
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// CHECK:STDOUT: class @C {
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// CHECK:STDOUT: impl_decl @C.as.<error>.impl [concrete] {} {
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// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%C [concrete = constants.%C]
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// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
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// CHECK:STDOUT: %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type.357]
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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: has_error
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// CHECK:STDOUT: }
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// CHECK:STDOUT:
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