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Per #3714, some of the details here are not yet settled. In particular, we might want `Self` to come into scope at the start of the definition, not at the `as` keyword. However, this change allows us to accept the uncontroversial examples.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| // 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 | ||
|
|
||
| interface DefaultConstructible { | ||
| fn Make() -> Self; | ||
| } | ||
|
|
||
| class A { | ||
| impl i32 as DefaultConstructible { | ||
| // `Self` here refers to `i32`, not `A`. | ||
| // TODO: Revisit this once #3714 is resolved. | ||
| fn Make() -> Self { return 0; } | ||
| } | ||
| } | ||
|
|
||
| // CHECK:STDOUT: --- self_in_class.carbon | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: constants { | ||
| // CHECK:STDOUT: %.1: type = interface_type @DefaultConstructible [template] | ||
| // CHECK:STDOUT: %.2: type = assoc_entity_type @DefaultConstructible, <function> [template] | ||
| // CHECK:STDOUT: %.3: <associated <function> in DefaultConstructible> = assoc_entity element0, @DefaultConstructible.%Make [template] | ||
| // CHECK:STDOUT: %A: type = class_type @A [template] | ||
| // CHECK:STDOUT: %.4: i32 = int_literal 0 [template] | ||
| // CHECK:STDOUT: %.5: <witness> = interface_witness (@impl.%Make) [template] | ||
| // CHECK:STDOUT: %.6: type = struct_type {} [template] | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: file { | ||
| // CHECK:STDOUT: package: <namespace> = namespace [template] { | ||
| // CHECK:STDOUT: .DefaultConstructible = %DefaultConstructible.decl | ||
| // CHECK:STDOUT: .A = %A.decl | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: %DefaultConstructible.decl: type = interface_decl @DefaultConstructible [template = constants.%.1] {} | ||
| // CHECK:STDOUT: %A.decl: type = class_decl @A [template = constants.%A] {} | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: interface @DefaultConstructible { | ||
| // CHECK:STDOUT: %Self: DefaultConstructible = bind_symbolic_name Self [symbolic] | ||
| // CHECK:STDOUT: %Make: <function> = fn_decl @Make.1 [template] { | ||
| // CHECK:STDOUT: %Self.ref: DefaultConstructible = name_ref Self, %Self [symbolic = %Self] | ||
| // CHECK:STDOUT: %.loc8_16.1: type = facet_type_access %Self.ref [symbolic = %Self] | ||
| // CHECK:STDOUT: %.loc8_16.2: type = converted %Self.ref, %.loc8_16.1 [symbolic = %Self] | ||
| // CHECK:STDOUT: %return.var: ref Self = var <return slot> | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: %.loc8_20: <associated <function> in DefaultConstructible> = assoc_entity element0, %Make [template = constants.%.3] | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: !members: | ||
| // CHECK:STDOUT: .Self = %Self | ||
| // CHECK:STDOUT: .Make = %.loc8_20 | ||
| // CHECK:STDOUT: witness = (%Make) | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: impl @impl: i32 as DefaultConstructible { | ||
| // CHECK:STDOUT: %Make: <function> = fn_decl @Make.2 [template] { | ||
| // CHECK:STDOUT: %Self.ref: type = name_ref Self, i32 [template = i32] | ||
| // CHECK:STDOUT: %return.var: ref i32 = var <return slot> | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: %.1: <witness> = interface_witness (%Make) [template = constants.%.5] | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: !members: | ||
| // CHECK:STDOUT: .Make = %Make | ||
| // CHECK:STDOUT: witness = %.1 | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: class @A { | ||
| // CHECK:STDOUT: impl_decl @impl { | ||
| // CHECK:STDOUT: %DefaultConstructible.ref: type = name_ref DefaultConstructible, file.%DefaultConstructible.decl [template = constants.%.1] | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: !members: | ||
| // CHECK:STDOUT: .Self = constants.%A | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: fn @Make.1() -> Self; | ||
| // CHECK:STDOUT: | ||
| // CHECK:STDOUT: fn @Make.2() -> i32 { | ||
| // CHECK:STDOUT: !entry: | ||
| // CHECK:STDOUT: %.loc15: i32 = int_literal 0 [template = constants.%.4] | ||
| // CHECK:STDOUT: return %.loc15 | ||
| // CHECK:STDOUT: } | ||
| // CHECK:STDOUT: |
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