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carbon-lang/toolchain/check/testdata/class/self/self.carbon
T
Geoff RomerandJon Ross-Perkins 6dba8ee111 Remove index fields from ParamPatterns (#6815) 
This is a step toward removing the index from `InitForm`, so that equal
form values always have equal representations.

---------

Co-authored-by: Jon Ross-Perkins <jperkins@google.com>
2026-03-03 00:19:47 +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/int.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/class/self/self.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/self/self.carbon
// --- self.carbon
library "[[@TEST_NAME]]";
class Class {
fn F[self: Self]() -> i32;
fn G[ref self: Self]() -> i32;
var n: i32;
}
fn Class.F[self: Self]() -> i32 {
return self.n;
}
fn Class.G[ref self: Self]() -> i32 {
return self.n;
}
// --- fail_return_self_value.carbon
library "[[@TEST_NAME]]";
class Class {
// CHECK:STDERR: fail_return_self_value.carbon:[[@LINE+7]]:25: error: cannot implicitly convert non-type value of type `Class` to `type` [ConversionFailureNonTypeToFacet]
// CHECK:STDERR: fn F[self: Self]() -> self;
// CHECK:STDERR: ^~~~
// CHECK:STDERR: fail_return_self_value.carbon:[[@LINE+4]]:25: note: type `Class` does not implement interface `Core.ImplicitAs(type)` [MissingImplInMemberAccessInContext]
// CHECK:STDERR: fn F[self: Self]() -> self;
// CHECK:STDERR: ^~~~
// CHECK:STDERR:
fn F[self: Self]() -> self;
}
// CHECK:STDOUT: --- self.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Class: type = class_type @Class [concrete]
// CHECK:STDOUT: %pattern_type.904: type = pattern_type %Class [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %Int.type: type = generic_class_type @Int [concrete]
// CHECK:STDOUT: %Int.generic: %Int.type = struct_value () [concrete]
// CHECK:STDOUT: %N: Core.IntLiteral = symbolic_binding N, 0 [symbolic]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %.e54: Core.Form = init_form %i32, call_param1 [concrete]
// CHECK:STDOUT: %pattern_type.7ce: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %Class.F.type: type = fn_type @Class.F [concrete]
// CHECK:STDOUT: %Class.F: %Class.F.type = struct_value () [concrete]
// CHECK:STDOUT: %Class.G.type: type = fn_type @Class.G [concrete]
// CHECK:STDOUT: %Class.G: %Class.G.type = struct_value () [concrete]
// CHECK:STDOUT: %Class.elem: type = unbound_element_type %Class, %i32 [concrete]
// CHECK:STDOUT: %struct_type.n: type = struct_type {.n: %i32} [concrete]
// CHECK:STDOUT: %complete_type.54b: <witness> = complete_type_witness %struct_type.n [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.824: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%N) [symbolic]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.9b9: %Int.as.Copy.impl.Op.type.824 = struct_value () [symbolic]
// CHECK:STDOUT: %Copy.impl_witness.f17: <witness> = impl_witness imports.%Copy.impl_witness_table.e76, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.type.546: type = fn_type @Int.as.Copy.impl.Op, @Int.as.Copy.impl(%int_32) [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.664: %Int.as.Copy.impl.Op.type.546 = struct_value () [concrete]
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %i32, (%Copy.impl_witness.f17) [concrete]
// CHECK:STDOUT: %Copy.WithSelf.Op.type.081: type = fn_type @Copy.WithSelf.Op, @Copy.WithSelf(%Copy.facet) [concrete]
// CHECK:STDOUT: %.8e2: type = fn_type_with_self_type %Copy.WithSelf.Op.type.081, %Copy.facet [concrete]
// CHECK:STDOUT: %Int.as.Copy.impl.Op.specific_fn: <specific function> = specific_function %Int.as.Copy.impl.Op.664, @Int.as.Copy.impl.Op(%int_32) [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: .Copy = %Core.Copy
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.Int: %Int.type = import_ref Core//prelude/parts/int, Int, loaded [concrete = constants.%Int.generic]
// CHECK:STDOUT: %Core.Copy: type = import_ref Core//prelude/parts/copy, Copy, loaded [concrete = constants.%Copy.type]
// CHECK:STDOUT: %Core.import_ref.18d: @Int.as.Copy.impl.%Int.as.Copy.impl.Op.type (%Int.as.Copy.impl.Op.type.824) = import_ref Core//prelude/parts/int, loc{{\d+_\d+}}, loaded [symbolic = @Int.as.Copy.impl.%Int.as.Copy.impl.Op (constants.%Int.as.Copy.impl.Op.9b9)]
// CHECK:STDOUT: %Copy.impl_witness_table.e76 = impl_witness_table (%Core.import_ref.18d), @Int.as.Copy.impl [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Class = %Class.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Class.decl: type = class_decl @Class [concrete = constants.%Class] {} {}
// CHECK:STDOUT: %Class.F.decl: %Class.F.type = fn_decl @Class.F [concrete = constants.%Class.F] {
// CHECK:STDOUT: %self.patt: %pattern_type.904 = value_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: %pattern_type.904 = value_param_pattern %self.patt [concrete]
// CHECK:STDOUT: %return.patt: %pattern_type.7ce = return_slot_pattern [concrete]
// CHECK:STDOUT: %return.param_patt: %pattern_type.7ce = out_param_pattern %return.patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %i32.loc11: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %.loc11: Core.Form = init_form %i32.loc11, call_param1 [concrete = constants.%.e54]
// CHECK:STDOUT: %self.param.loc11: %Class = value_param call_param0
// CHECK:STDOUT: %Self.ref.loc11: type = name_ref Self, constants.%Class [concrete = constants.%Class]
// CHECK:STDOUT: %self.loc11: %Class = value_binding self, %self.param.loc11
// CHECK:STDOUT: %return.param.loc11: ref %i32 = out_param call_param1
// CHECK:STDOUT: %return.loc11: ref %i32 = return_slot %return.param.loc11
// CHECK:STDOUT: }
// CHECK:STDOUT: %Class.G.decl: %Class.G.type = fn_decl @Class.G [concrete = constants.%Class.G] {
// CHECK:STDOUT: %self.patt: %pattern_type.904 = ref_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: %pattern_type.904 = ref_param_pattern %self.patt [concrete]
// CHECK:STDOUT: %return.patt: %pattern_type.7ce = return_slot_pattern [concrete]
// CHECK:STDOUT: %return.param_patt: %pattern_type.7ce = out_param_pattern %return.patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %i32.loc15: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %.loc15: Core.Form = init_form %i32.loc15, call_param1 [concrete = constants.%.e54]
// CHECK:STDOUT: %self.param.loc15: ref %Class = ref_param call_param0
// CHECK:STDOUT: %Self.ref.loc15: type = name_ref Self, constants.%Class [concrete = constants.%Class]
// CHECK:STDOUT: %self.loc15: ref %Class = ref_binding self, %self.param.loc15
// CHECK:STDOUT: %return.param.loc15: ref %i32 = out_param call_param1
// CHECK:STDOUT: %return.loc15: ref %i32 = return_slot %return.param.loc15
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Class {
// CHECK:STDOUT: %Class.F.decl: %Class.F.type = fn_decl @Class.F [concrete = constants.%Class.F] {
// CHECK:STDOUT: %self.patt: %pattern_type.904 = value_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: %pattern_type.904 = value_param_pattern %self.patt [concrete]
// CHECK:STDOUT: %return.patt: %pattern_type.7ce = return_slot_pattern [concrete]
// CHECK:STDOUT: %return.param_patt: %pattern_type.7ce = out_param_pattern %return.patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %i32.loc5: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %.loc5: Core.Form = init_form %i32.loc5, call_param1 [concrete = constants.%.e54]
// CHECK:STDOUT: %self.param.loc5: %Class = value_param call_param0
// CHECK:STDOUT: %Self.ref.loc5: type = name_ref Self, constants.%Class [concrete = constants.%Class]
// CHECK:STDOUT: %self.loc5: %Class = value_binding self, %self.param.loc5
// CHECK:STDOUT: %return.param.loc5: ref %i32 = out_param call_param1
// CHECK:STDOUT: %return.loc5: ref %i32 = return_slot %return.param.loc5
// CHECK:STDOUT: }
// CHECK:STDOUT: %Class.G.decl: %Class.G.type = fn_decl @Class.G [concrete = constants.%Class.G] {
// CHECK:STDOUT: %self.patt: %pattern_type.904 = ref_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: %pattern_type.904 = ref_param_pattern %self.patt [concrete]
// CHECK:STDOUT: %return.patt: %pattern_type.7ce = return_slot_pattern [concrete]
// CHECK:STDOUT: %return.param_patt: %pattern_type.7ce = out_param_pattern %return.patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %i32.loc6: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %.loc6: Core.Form = init_form %i32.loc6, call_param1 [concrete = constants.%.e54]
// CHECK:STDOUT: %self.param.loc6: ref %Class = ref_param call_param0
// CHECK:STDOUT: %Self.ref.loc6: type = name_ref Self, constants.%Class [concrete = constants.%Class]
// CHECK:STDOUT: %self.loc6: ref %Class = ref_binding self, %self.param.loc6
// CHECK:STDOUT: %return.param.loc6: ref %i32 = out_param call_param1
// CHECK:STDOUT: %return.loc6: ref %i32 = return_slot %return.param.loc6
// CHECK:STDOUT: }
// CHECK:STDOUT: %i32: type = type_literal constants.%i32 [concrete = constants.%i32]
// CHECK:STDOUT: %.loc8: %Class.elem = field_decl n, element0 [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%struct_type.n [concrete = constants.%complete_type.54b]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Class
// CHECK:STDOUT: .F = %Class.F.decl
// CHECK:STDOUT: .G = %Class.G.decl
// CHECK:STDOUT: .n = %.loc8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Class.F(%self.param.loc11: %Class) -> out %return.param.loc11: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %self.ref: %Class = name_ref self, %self.loc11
// CHECK:STDOUT: %n.ref: %Class.elem = name_ref n, @Class.%.loc8 [concrete = @Class.%.loc8]
// CHECK:STDOUT: %.loc12_14.1: ref %i32 = class_element_access %self.ref, element0
// CHECK:STDOUT: %.loc12_14.2: %i32 = acquire_value %.loc12_14.1
// CHECK:STDOUT: %impl.elem0: %.8e2 = impl_witness_access constants.%Copy.impl_witness.f17, element0 [concrete = constants.%Int.as.Copy.impl.Op.664]
// CHECK:STDOUT: %bound_method.loc12_14.1: <bound method> = bound_method %.loc12_14.2, %impl.elem0
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Int.as.Copy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc12_14.2: <bound method> = bound_method %.loc12_14.2, %specific_fn
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call: init %i32 = call %bound_method.loc12_14.2(%.loc12_14.2)
// CHECK:STDOUT: return %Int.as.Copy.impl.Op.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Class.G(%self.param.loc15: ref %Class) -> out %return.param.loc15: %i32 {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %self.ref: ref %Class = name_ref self, %self.loc15
// CHECK:STDOUT: %n.ref: %Class.elem = name_ref n, @Class.%.loc8 [concrete = @Class.%.loc8]
// CHECK:STDOUT: %.loc16_14.1: ref %i32 = class_element_access %self.ref, element0
// CHECK:STDOUT: %.loc16_14.2: %i32 = acquire_value %.loc16_14.1
// CHECK:STDOUT: %impl.elem0: %.8e2 = impl_witness_access constants.%Copy.impl_witness.f17, element0 [concrete = constants.%Int.as.Copy.impl.Op.664]
// CHECK:STDOUT: %bound_method.loc16_14.1: <bound method> = bound_method %.loc16_14.2, %impl.elem0
// CHECK:STDOUT: %specific_fn: <specific function> = specific_function %impl.elem0, @Int.as.Copy.impl.Op(constants.%int_32) [concrete = constants.%Int.as.Copy.impl.Op.specific_fn]
// CHECK:STDOUT: %bound_method.loc16_14.2: <bound method> = bound_method %.loc16_14.2, %specific_fn
// CHECK:STDOUT: %Int.as.Copy.impl.Op.call: init %i32 = call %bound_method.loc16_14.2(%.loc16_14.2)
// CHECK:STDOUT: return %Int.as.Copy.impl.Op.call
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_return_self_value.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Class: type = class_type @Class [concrete]
// CHECK:STDOUT: %pattern_type.904: type = pattern_type %Class [concrete]
// CHECK:STDOUT: %ImplicitAs.type.cc7: type = generic_interface_type @ImplicitAs [concrete]
// CHECK:STDOUT: %ImplicitAs.generic: %ImplicitAs.type.cc7 = struct_value () [concrete]
// CHECK:STDOUT: %Class.F.type: type = fn_type @Class.F [concrete]
// CHECK:STDOUT: %Class.F: %Class.F.type = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %empty_struct_type [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .ImplicitAs = %Core.ImplicitAs
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.ImplicitAs: %ImplicitAs.type.cc7 = import_ref Core//prelude/parts/as, ImplicitAs, loaded [concrete = constants.%ImplicitAs.generic]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Class = %Class.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Class.decl: type = class_decl @Class [concrete = constants.%Class] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Class {
// CHECK:STDOUT: %Class.F.decl: %Class.F.type = fn_decl @Class.F [concrete = constants.%Class.F] {
// CHECK:STDOUT: %self.patt: %pattern_type.904 = value_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: %pattern_type.904 = value_param_pattern %self.patt [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.ref: %Class = name_ref self, %self
// CHECK:STDOUT: %.loc12: type = converted %self.ref, <error> [concrete = <error>]
// CHECK:STDOUT: %self.param: %Class = value_param call_param0
// CHECK:STDOUT: %Self.ref: type = name_ref Self, constants.%Class [concrete = constants.%Class]
// CHECK:STDOUT: %self: %Class = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness constants.%empty_struct_type [concrete = constants.%complete_type]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Class
// CHECK:STDOUT: .F = %Class.F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Class.F(%self.param: %Class) -> <error>;
// CHECK:STDOUT:
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