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carbon-lang/toolchain/check/testdata/impl/fail_call_invalid.carbon
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Dana Jansens 917a6ea971 Add an interface-with-self generic to each interface and same for constraints (#6667) 
Currently each interface has a `Self` facet internally that becomes a
binding to every entity inside the interface: associated constants,
functions, and require decls. Each of these has to be independently
generic as a result. This makes is challenging in extended name lookup
to move into an extended scope of an interface, as we have a specific
for the interface, but the names within require a different specific
that includes a `Self` facet value.

We generalize this relationship by adding a second generic to Interface,
called `generic_with_self`. When we want to work with entities inside
the interface, we move from the interface-without-specific to the
interface-with-self specific by adding a Self to the specific. This is
done independently of any particular entity inside the Interface, as
those entities are now all members of the interface-with-self generic.

Associated constants no longer need a generic of their own, as they do
not have separate generic bindings. Functions retain a generic, but if
the function has no generic arguments, it will have no bindings of its
own now.

Require decls retain a generic so that their specific can be
instantiated separately from the interface. Requiring the interface to
be complete does not require the types in a require decl to be complete
unless it is modified by `extend`. So we allow them to be completed
later by keeping them in a separate generic.

Named constraints look like interfaces and gain the additional inner
generic-with-self, with the same relationship to require decls.

This removes the need for name lookup to perform Substitution of a Self
facet into the extended scope instruction. Instead, the
`SpecificConstant` instruction inserted by a `require` decl is part of
the interface-with-self generic. When looking through a FacetType for
extended scopes, for each interface, we push the scope with the specific
for the interface-with-self. Then the constant value of the
`SpecificConstant` is correctly modified by the provided self
automatically through applying that specific.
2026-02-19 16:24:07 +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/impl/fail_call_invalid.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/impl/fail_call_invalid.carbon
interface Simple {
fn G[self: Self]();
}
impl i32 as Simple {
// CHECK:STDERR: fail_call_invalid.carbon:[[@LINE+4]]:14: error: name `Undeclared` not found [NameNotFound]
// CHECK:STDERR: fn G[self: Undeclared]();
// CHECK:STDERR: ^~~~~~~~~~
// CHECK:STDERR:
fn G[self: Undeclared]();
}
fn InstanceCall(n: i32) {
n.(Simple.G)();
}
// CHECK:STDOUT: --- fail_call_invalid.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Simple.type: type = facet_type <@Simple> [concrete]
// CHECK:STDOUT: %Self: %Simple.type = symbolic_binding Self, 0 [symbolic]
// CHECK:STDOUT: %Self.binding.as_type: type = symbolic_binding_type Self, 0, %Self [symbolic]
// CHECK:STDOUT: %pattern_type.5e9: type = pattern_type %Self.binding.as_type [symbolic]
// CHECK:STDOUT: %Simple.WithSelf.G.type.d78: type = fn_type @Simple.WithSelf.G, @Simple(%Self) [symbolic]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Simple.WithSelf.G.41d: %Simple.WithSelf.G.type.d78 = struct_value () [symbolic]
// CHECK:STDOUT: %Simple.assoc_type: type = assoc_entity_type @Simple [concrete]
// CHECK:STDOUT: %assoc0: %Simple.assoc_type = assoc_entity element0, @Simple.%Simple.WithSelf.G.decl [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: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %Simple.impl_witness: <witness> = impl_witness @i32.as.Simple.impl.%Simple.impl_witness_table [concrete]
// CHECK:STDOUT: %i32.as.Simple.impl.G.type.32ad7a.1: type = fn_type @i32.as.Simple.impl.G.loc24_27.1 [concrete]
// CHECK:STDOUT: %i32.as.Simple.impl.G.4f6260.1: %i32.as.Simple.impl.G.type.32ad7a.1 = struct_value () [concrete]
// CHECK:STDOUT: %Simple.facet: %Simple.type = facet_value %i32, (%Simple.impl_witness) [concrete]
// CHECK:STDOUT: %Simple.WithSelf.G.type.9d9: type = fn_type @Simple.WithSelf.G, @Simple(%Simple.facet) [concrete]
// CHECK:STDOUT: %Simple.WithSelf.G.26c: %Simple.WithSelf.G.type.9d9 = struct_value () [concrete]
// CHECK:STDOUT: %pattern_type.7ce: type = pattern_type %i32 [concrete]
// CHECK:STDOUT: %i32.as.Simple.impl.G.type.32ad7a.2: type = fn_type @i32.as.Simple.impl.G.loc24_27.2 [concrete]
// CHECK:STDOUT: %i32.as.Simple.impl.G.4f6260.2: %i32.as.Simple.impl.G.type.32ad7a.2 = struct_value () [concrete]
// CHECK:STDOUT: %InstanceCall.type: type = fn_type @InstanceCall [concrete]
// CHECK:STDOUT: %InstanceCall: %InstanceCall.type = struct_value () [concrete]
// CHECK:STDOUT: %.a46: type = fn_type_with_self_type %Simple.WithSelf.G.type.9d9, %Simple.facet [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// 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: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [concrete] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Simple = %Simple.decl
// CHECK:STDOUT: .Undeclared = <poisoned>
// CHECK:STDOUT: .InstanceCall = %InstanceCall.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Simple.decl: type = interface_decl @Simple [concrete = constants.%Simple.type] {} {}
// CHECK:STDOUT: impl_decl @i32.as.Simple.impl [concrete] {} {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: %Simple.ref: type = name_ref Simple, file.%Simple.decl [concrete = constants.%Simple.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %InstanceCall.decl: %InstanceCall.type = fn_decl @InstanceCall [concrete = constants.%InstanceCall] {
// CHECK:STDOUT: %n.patt: %pattern_type.7ce = value_binding_pattern n [concrete]
// CHECK:STDOUT: %n.param_patt: %pattern_type.7ce = value_param_pattern %n.patt, call_param0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %n.param: %i32 = value_param call_param0
// CHECK:STDOUT: %.loc27: type = splice_block %i32 [concrete = constants.%i32] {
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: }
// CHECK:STDOUT: %n: %i32 = value_binding n, %n.param
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: interface @Simple {
// CHECK:STDOUT: %Self.loc15: %Simple.type = symbolic_binding Self, 0 [symbolic = constants.%Self]
// CHECK:STDOUT: interface_with_self_decl @Simple [concrete]
// CHECK:STDOUT:
// CHECK:STDOUT: !with Self:
// CHECK:STDOUT: %Simple.WithSelf.G.decl: @Simple.%Simple.WithSelf.G.type (%Simple.WithSelf.G.type.d78) = fn_decl @Simple.WithSelf.G [symbolic = @Simple.%Simple.WithSelf.G (constants.%Simple.WithSelf.G.41d)] {
// CHECK:STDOUT: %self.patt: @Simple.WithSelf.G.%pattern_type (%pattern_type.5e9) = value_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: @Simple.WithSelf.G.%pattern_type (%pattern_type.5e9) = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: @Simple.WithSelf.G.%Self.binding.as_type (%Self.binding.as_type) = value_param call_param0
// CHECK:STDOUT: %.loc16_14.1: type = splice_block %.loc16_14.2 [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)] {
// CHECK:STDOUT: %Self.ref: %Simple.type = name_ref Self, @Simple.%Self.loc15 [symbolic = %Self (constants.%Self)]
// CHECK:STDOUT: %Self.as_type: type = facet_access_type %Self.ref [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
// CHECK:STDOUT: %.loc16_14.2: type = converted %Self.ref, %Self.as_type [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
// CHECK:STDOUT: }
// CHECK:STDOUT: %self: @Simple.WithSelf.G.%Self.binding.as_type (%Self.binding.as_type) = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %assoc0: %Simple.assoc_type = assoc_entity element0, %Simple.WithSelf.G.decl [concrete = constants.%assoc0]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = %Self.loc15
// CHECK:STDOUT: .G = %assoc0
// CHECK:STDOUT: witness = (%Simple.WithSelf.G.decl)
// CHECK:STDOUT:
// CHECK:STDOUT: !requires:
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: impl @i32.as.Simple.impl: %i32 as %Simple.ref {
// CHECK:STDOUT: %i32.as.Simple.impl.G.decl.loc24_27.1: %i32.as.Simple.impl.G.type.32ad7a.1 = fn_decl @i32.as.Simple.impl.G.loc24_27.1 [concrete = constants.%i32.as.Simple.impl.G.4f6260.1] {
// CHECK:STDOUT: %self.patt: <error> = value_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: <error> = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: <error> = value_param call_param0
// CHECK:STDOUT: %Undeclared.ref: <error> = name_ref Undeclared, <error> [concrete = <error>]
// CHECK:STDOUT: %self: <error> = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %i32.as.Simple.impl.G.decl.loc24_27.2: %i32.as.Simple.impl.G.type.32ad7a.2 = fn_decl @i32.as.Simple.impl.G.loc24_27.2 [concrete = constants.%i32.as.Simple.impl.G.4f6260.2] {
// CHECK:STDOUT: %self.patt: %pattern_type.7ce = value_binding_pattern self [concrete]
// CHECK:STDOUT: %self.param_patt: %pattern_type.7ce = value_param_pattern %self.patt, call_param0 [concrete]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %self.param: %i32 = value_param call_param0
// CHECK:STDOUT: %self: %i32 = value_binding self, %self.param
// CHECK:STDOUT: }
// CHECK:STDOUT: %Simple.impl_witness_table = impl_witness_table (%i32.as.Simple.impl.G.decl.loc24_27.2), @i32.as.Simple.impl [concrete]
// CHECK:STDOUT: %Simple.impl_witness: <witness> = impl_witness %Simple.impl_witness_table [concrete = constants.%Simple.impl_witness]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Undeclared = <poisoned>
// CHECK:STDOUT: .G = %i32.as.Simple.impl.G.decl.loc24_27.1
// CHECK:STDOUT: witness = %Simple.impl_witness
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @Simple.WithSelf.G(@Simple.%Self.loc15: %Simple.type) {
// CHECK:STDOUT: %Self: %Simple.type = symbolic_binding Self, 0 [symbolic = %Self (constants.%Self)]
// CHECK:STDOUT: %Self.binding.as_type: type = symbolic_binding_type Self, 0, %Self [symbolic = %Self.binding.as_type (constants.%Self.binding.as_type)]
// CHECK:STDOUT: %pattern_type: type = pattern_type %Self.binding.as_type [symbolic = %pattern_type (constants.%pattern_type.5e9)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%self.param: @Simple.WithSelf.G.%Self.binding.as_type (%Self.binding.as_type));
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @i32.as.Simple.impl.G.loc24_27.1(%self.param: <error>);
// CHECK:STDOUT:
// CHECK:STDOUT: fn @i32.as.Simple.impl.G.loc24_27.2(%self.param: %i32) [thunk @i32.as.Simple.impl.%i32.as.Simple.impl.G.decl.loc24_27.1] {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %G.ref: %i32.as.Simple.impl.G.type.32ad7a.1 = name_ref G, @i32.as.Simple.impl.%i32.as.Simple.impl.G.decl.loc24_27.1 [concrete = constants.%i32.as.Simple.impl.G.4f6260.1]
// CHECK:STDOUT: %self.ref: %i32 = name_ref self, %self.param
// CHECK:STDOUT: %i32.as.Simple.impl.G.bound: <bound method> = bound_method %self.ref, %G.ref
// CHECK:STDOUT: %i32.as.Simple.impl.G.call: init %empty_tuple.type = call %i32.as.Simple.impl.G.bound(<error>)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @InstanceCall(%n.param: %i32) {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %n.ref: %i32 = name_ref n, %n
// CHECK:STDOUT: %Simple.ref: type = name_ref Simple, file.%Simple.decl [concrete = constants.%Simple.type]
// CHECK:STDOUT: %G.ref.loc28_12: %Simple.assoc_type = name_ref G, @Simple.%assoc0 [concrete = constants.%assoc0]
// CHECK:STDOUT: %impl.elem0: %.a46 = impl_witness_access constants.%Simple.impl_witness, element0 [concrete = constants.%i32.as.Simple.impl.G.4f6260.2]
// CHECK:STDOUT: %bound_method: <bound method> = bound_method %n.ref, %impl.elem0
// CHECK:STDOUT: %G.ref.loc28_16: %i32.as.Simple.impl.G.type.32ad7a.1 = name_ref G, @i32.as.Simple.impl.%i32.as.Simple.impl.G.decl.loc24_27.1 [concrete = constants.%i32.as.Simple.impl.G.4f6260.1]
// CHECK:STDOUT: %i32.as.Simple.impl.G.bound: <bound method> = bound_method %n.ref, %G.ref.loc28_16
// CHECK:STDOUT: %i32.as.Simple.impl.G.call: init %empty_tuple.type = call %i32.as.Simple.impl.G.bound(<error>)
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple(constants.%Self) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Self.loc16 => constants.%Self
// CHECK:STDOUT: %Simple.WithSelf.G.type => constants.%Simple.WithSelf.G.type.d78
// CHECK:STDOUT: %Simple.WithSelf.G => constants.%Simple.WithSelf.G.41d
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.WithSelf.G(constants.%Self) {
// CHECK:STDOUT: %Self => constants.%Self
// CHECK:STDOUT: %Self.binding.as_type => constants.%Self.binding.as_type
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.5e9
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple(constants.%Simple.facet) {
// CHECK:STDOUT: !definition:
// CHECK:STDOUT: %Self.loc16 => constants.%Simple.facet
// CHECK:STDOUT: %Simple.WithSelf.G.type => constants.%Simple.WithSelf.G.type.9d9
// CHECK:STDOUT: %Simple.WithSelf.G => constants.%Simple.WithSelf.G.26c
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @Simple.WithSelf.G(constants.%Simple.facet) {
// CHECK:STDOUT: %Self => constants.%Simple.facet
// CHECK:STDOUT: %Self.binding.as_type => constants.%i32
// CHECK:STDOUT: %pattern_type => constants.%pattern_type.7ce
// CHECK:STDOUT: }
// CHECK:STDOUT:
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