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carbon-lang/toolchain/check/testdata/impl/impl_as.carbon
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Jon Ross-Perkins 4a6376cf59 Rename/restructure Destroy logic to better reflect #6124 (#6144) 
This also does a little restructuring in the same direction, following
#6124.

Leads want `Destroy` to work similarly now for all types. As a
consequence, there doesn't seem to be as much benefit to splitting off
aggregate destruction. In this PR, the `type.destroy` function can now
be expected to destroy anything that's destructible; that means it'll be
usable for the `final fn` once that support is available.

Similarly, this gets rid of the impls other than the single blanket
impl, now using `type.can_destroy`. Since they all need to use the same
function, there's no benefit to splitting approaches. Also, now it can
just be a `final impl` since there should be no need for people to
create specializations -- if this blanket impl applies, it means the
`final fn` is the same.

This also slips in `partial` support since there's no reason to have it
diverge anymore. Also `abstract`, which I'm not sure is broadly testable
since most cases it'd come up, the `abstract` keyword is explicitly
detected/rejected.

Note though that this doesn't make any really big changes. It's just
realigning on the leads decision. I'm going this way to try to reduce
name-related churn for other changes.
2025-09-30 20:43:36 +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
//
// INCLUDE-FILE: toolchain/testing/testdata/min_prelude/destroy.carbon
// TODO: Add ranges and switch to "--dump-sem-ir-ranges=only".
// EXTRA-ARGS: --dump-sem-ir-ranges=if-present
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/impl/impl_as.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/impl_as.carbon
interface Simple {
fn F();
}
class C {
impl as Simple {
fn F() {
// C is a complete type here.
var c: C = {};
}
}
}
// CHECK:STDOUT: --- impl_as.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Simple.type: type = facet_type <@Simple> [concrete]
// CHECK:STDOUT: %Self.8ef: %Simple.type = bind_symbolic_name Self, 0 [symbolic]
// CHECK:STDOUT: %Simple.F.type: type = fn_type @Simple.F [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Simple.F: %Simple.F.type = struct_value () [concrete]
// CHECK:STDOUT: %Simple.assoc_type: type = assoc_entity_type @Simple [concrete]
// CHECK:STDOUT: %assoc0.d57: %Simple.assoc_type = assoc_entity element0, @Simple.%Simple.F.decl [concrete]
// CHECK:STDOUT: %C: type = class_type @C [concrete]
// CHECK:STDOUT: %Simple.impl_witness: <witness> = impl_witness @C.%Simple.impl_witness_table [concrete]
// CHECK:STDOUT: %C.as.Simple.impl.F.type: type = fn_type @C.as.Simple.impl.F [concrete]
// CHECK:STDOUT: %C.as.Simple.impl.F: %C.as.Simple.impl.F.type = struct_value () [concrete]
// CHECK:STDOUT: %Simple.facet: %Simple.type = facet_value %C, (%Simple.impl_witness) [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type.357: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: %pattern_type.c48: type = pattern_type %C [concrete]
// CHECK:STDOUT: %C.val: %C = struct_value () [concrete]
// CHECK:STDOUT: %Destroy.type: type = facet_type <@Destroy> [concrete]
// CHECK:STDOUT: %type_where: type = facet_type <type where .Self impls <CanDestroy>> [concrete]
// CHECK:STDOUT: %facet_value: %type_where = facet_value %C, () [concrete]
// CHECK:STDOUT: %DestroyT.as_type.as.Destroy.impl.Op.type.075: type = fn_type @DestroyT.as_type.as.Destroy.impl.Op, @DestroyT.as_type.as.Destroy.impl(%facet_value) [concrete]
// CHECK:STDOUT: %DestroyT.as_type.as.Destroy.impl.Op.b80: %DestroyT.as_type.as.Destroy.impl.Op.type.075 = struct_value () [concrete]
// CHECK:STDOUT: %ptr.019: type = ptr_type %C [concrete]
// CHECK:STDOUT: %DestroyT.as_type.as.Destroy.impl.Op.specific_fn: <specific function> = specific_function %DestroyT.as_type.as.Destroy.impl.Op.b80, @DestroyT.as_type.as.Destroy.impl.Op(%facet_value) [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Destroy = %Core.Destroy
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Destroy: type = import_ref Core//prelude/parts/destroy, Destroy, loaded [concrete = constants.%Destroy.type]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Simple = %Simple.decl
// CHECK:STDOUT: .C = %C.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Simple.decl: type = interface_decl @Simple [concrete = constants.%Simple.type] {} {}
// CHECK:STDOUT: %C.decl: type = class_decl @C [concrete = constants.%C] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @Simple {
// CHECK:STDOUT: %Self: %Simple.type = bind_symbolic_name Self, 0 [symbolic = constants.%Self.8ef]
// CHECK:STDOUT: %Simple.F.decl: %Simple.F.type = fn_decl @Simple.F [concrete = constants.%Simple.F] {} {}
// CHECK:STDOUT: %assoc0: %Simple.assoc_type = assoc_entity element0, %Simple.F.decl [concrete = constants.%assoc0.d57]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self
// CHECK:STDOUT: .F = %assoc0
// CHECK:STDOUT: witness = (%Simple.F.decl)
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @C.as.Simple.impl: %Self.ref as %Simple.ref {
// CHECK:STDOUT: %C.as.Simple.impl.F.decl: %C.as.Simple.impl.F.type = fn_decl @C.as.Simple.impl.F [concrete = constants.%C.as.Simple.impl.F] {} {}
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .F = %C.as.Simple.impl.F.decl
// CHECK:STDOUT: .C = <poisoned>
// CHECK:STDOUT: witness = @C.%Simple.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @C {
// CHECK:STDOUT: impl_decl @C.as.Simple.impl [concrete] {} {
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%C [concrete = constants.%C]
// CHECK:STDOUT: %Simple.ref: type = name_ref Simple, file.%Simple.decl [concrete = constants.%Simple.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %Simple.impl_witness_table = impl_witness_table (@C.as.Simple.impl.%C.as.Simple.impl.F.decl), @C.as.Simple.impl [concrete]
// CHECK:STDOUT: %Simple.impl_witness: <witness> = impl_witness %Simple.impl_witness_table [concrete = constants.%Simple.impl_witness]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type.357]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%C
// CHECK:STDOUT: .Simple = <poisoned>
// CHECK:STDOUT: .C = <poisoned>
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @Simple.F(@Simple.%Self: %Simple.type) {
// CHECK:STDOUT: fn();
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @C.as.Simple.impl.F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %c.patt: %pattern_type.c48 = binding_pattern c [concrete]
// CHECK:STDOUT: %c.var_patt: %pattern_type.c48 = var_pattern %c.patt [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %c.var: ref %C = var %c.var_patt
// CHECK:STDOUT: %.loc23_19.1: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: %.loc23_19.2: init %C = class_init (), %c.var [concrete = constants.%C.val]
// CHECK:STDOUT: %.loc23_7.1: init %C = converted %.loc23_19.1, %.loc23_19.2 [concrete = constants.%C.val]
// CHECK:STDOUT: assign %c.var, %.loc23_7.1
// CHECK:STDOUT: %C.ref: type = name_ref C, file.%C.decl [concrete = constants.%C]
// CHECK:STDOUT: %c: ref %C = bind_name c, %c.var
// CHECK:STDOUT: %facet_value: %type_where = facet_value constants.%C, () [concrete = constants.%facet_value]
// CHECK:STDOUT: %.loc23_7.2: %type_where = converted constants.%C, %facet_value [concrete = constants.%facet_value]
// CHECK:STDOUT: %DestroyT.as_type.as.Destroy.impl.Op.bound: <bound method> = bound_method %c.var, constants.%DestroyT.as_type.as.Destroy.impl.Op.b80
// CHECK:STDOUT: %DestroyT.as_type.as.Destroy.impl.Op.specific_fn: <specific function> = specific_function constants.%DestroyT.as_type.as.Destroy.impl.Op.b80, @DestroyT.as_type.as.Destroy.impl.Op(constants.%facet_value) [concrete = constants.%DestroyT.as_type.as.Destroy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %c.var, %DestroyT.as_type.as.Destroy.impl.Op.specific_fn
// CHECK:STDOUT: %addr: %ptr.019 = addr_of %c.var
// CHECK:STDOUT: %DestroyT.as_type.as.Destroy.impl.Op.call: init %empty_tuple.type = call %bound_method(%addr)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.F(constants.%Self.8ef) {}
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.F(constants.%Simple.facet) {}
// CHECK:STDOUT:
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