mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Richard Smith
ce080b3549
When a class extends an interface, referring to a member name of the interface as an unqualified name should refer to the class's corresponding associated entity value, not to the associated entity itself. Similarly, in an `impl`, unqualified names of associated entities should refer to the `impl`'s corresponding value for that entity. To support this, we treat `impl`s as `extend`ing their implemented facet type, and we make lookups into an extended facet type use the `Self` type of the extending `impl` or `class` if lookup finds an associated entity. We already did the latter if the extending entity was an interface; this extends the existing support for these other cases.
88 lines
3.8 KiB
Plaintext
88 lines
3.8 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/declaration.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/declaration.carbon
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interface I {}
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impl i32 as I;
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impl i32 as I {}
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// CHECK:STDOUT: --- declaration.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> [concrete]
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// CHECK:STDOUT: %Self: %I.type = symbolic_binding Self, 0 [symbolic]
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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: %I.impl_witness: <witness> = impl_witness @i32.as.I.impl.%I.impl_witness_table [concrete]
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// CHECK:STDOUT: %I.facet: %I.type = facet_value %i32, (%I.impl_witness) [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: .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 [concrete = constants.%I.type] {} {}
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// CHECK:STDOUT: impl_decl @i32.as.I.impl [concrete] {} {
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// CHECK:STDOUT: %i32.loc17: type = type_literal constants.%i32 [concrete = constants.%i32]
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// CHECK:STDOUT: %I.ref.loc17: type = name_ref I, file.%I.decl [concrete = constants.%I.type]
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// CHECK:STDOUT: }
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// CHECK:STDOUT: impl_decl @i32.as.I.impl [concrete] {} {
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// CHECK:STDOUT: %i32.loc19: type = type_literal constants.%i32 [concrete = constants.%i32]
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// CHECK:STDOUT: %I.ref.loc19: type = name_ref I, file.%I.decl [concrete = 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 = 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 @i32.as.I.impl: %i32.loc17 as %I.ref.loc17 {
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// CHECK:STDOUT: %I.impl_witness_table = impl_witness_table (), @i32.as.I.impl [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 %I.ref.loc17
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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: 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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