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carbon-lang/toolchain/check/testdata/class/fail_field_modifiers.carbon
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Dana JansensandRichard Smith 0e8d354567 Split the witness table into a separate ImplWitnessTable instruction (#5272) 
This allows us to import the table for a given impl only once, while we
can import many ImplWitness instructions with different specifics for a
generic impl.

For example in convert_facet_value_to_narrowed_facet_type.carbon we see
that a single witness table is imported for the BitAnd interface, with
multiple witnesses (for different specifics) imported and sharing the
same table.

The ImplWitnessTable now contains a back-link to the Impl the witness is
for, allowing inst namer to name that interface in the textual semir,
and allowing the interface to be found when debugging from a witness.

---------

Co-authored-by: Richard Smith <richard@metafoo.co.uk>
2025-04-11 20:30:04 +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
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/class/fail_field_modifiers.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/fail_field_modifiers.carbon
class Class {
// CHECK:STDERR: fail_field_modifiers.carbon:[[@LINE+4]]:3: error: `default` not allowed on `var` declaration [ModifierNotAllowedOnDeclaration]
// CHECK:STDERR: default var j: i32;
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
default var j: i32;
// CHECK:STDERR: fail_field_modifiers.carbon:[[@LINE+4]]:3: error: `final` not allowed on `var` declaration [ModifierNotAllowedOnDeclaration]
// CHECK:STDERR: final var k: i32;
// CHECK:STDERR: ^~~~~
// CHECK:STDERR:
final var k: i32;
// CHECK:STDERR: fail_field_modifiers.carbon:[[@LINE+4]]:3: error: `default` not allowed; requires interface scope [ModifierRequiresInterface]
// CHECK:STDERR: default let l: i32 = 0;
// CHECK:STDERR: ^~~~~~~
// CHECK:STDERR:
default let l: i32 = 0;
// CHECK:STDERR: fail_field_modifiers.carbon:[[@LINE+4]]:3: error: `final` not allowed; requires interface scope [ModifierRequiresInterface]
// CHECK:STDERR: final let m: i32 = 1;
// CHECK:STDERR: ^~~~~
// CHECK:STDERR:
final let m: i32 = 1;
}
// CHECK:STDOUT: --- fail_field_modifiers.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Class: type = class_type @Class [concrete]
// CHECK:STDOUT: %int_32: Core.IntLiteral = int_value 32 [concrete]
// CHECK:STDOUT: %i32: type = class_type @Int, @Int(%int_32) [concrete]
// CHECK:STDOUT: %Class.elem: type = unbound_element_type %Class, %i32 [concrete]
// CHECK:STDOUT: %int_0.5c6: Core.IntLiteral = int_value 0 [concrete]
// CHECK:STDOUT: %ImplicitAs.type.205: type = facet_type <@ImplicitAs, @ImplicitAs(%i32)> [concrete]
// CHECK:STDOUT: %Convert.type.1b6: type = fn_type @Convert.1, @ImplicitAs(%i32) [concrete]
// CHECK:STDOUT: %ImplicitAs.impl_witness_table.a2f = impl_witness_table (imports.%Core.import_ref.a5b), @impl.4f9 [concrete]
// CHECK:STDOUT: %ImplicitAs.impl_witness.c75: <witness> = impl_witness %ImplicitAs.impl_witness_table.a2f, @impl.4f9(%int_32) [concrete]
// CHECK:STDOUT: %Convert.type.035: type = fn_type @Convert.2, @impl.4f9(%int_32) [concrete]
// CHECK:STDOUT: %Convert.956: %Convert.type.035 = struct_value () [concrete]
// CHECK:STDOUT: %ImplicitAs.facet: %ImplicitAs.type.205 = facet_value Core.IntLiteral, (%ImplicitAs.impl_witness.c75) [concrete]
// CHECK:STDOUT: %.9c3: type = fn_type_with_self_type %Convert.type.1b6, %ImplicitAs.facet [concrete]
// CHECK:STDOUT: %Convert.bound.d04: <bound method> = bound_method %int_0.5c6, %Convert.956 [concrete]
// CHECK:STDOUT: %Convert.specific_fn: <specific function> = specific_function %Convert.956, @Convert.2(%int_32) [concrete]
// CHECK:STDOUT: %bound_method.b6e: <bound method> = bound_method %int_0.5c6, %Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_0.6a9: %i32 = int_value 0 [concrete]
// CHECK:STDOUT: %int_1.5b8: Core.IntLiteral = int_value 1 [concrete]
// CHECK:STDOUT: %Convert.bound.ab5: <bound method> = bound_method %int_1.5b8, %Convert.956 [concrete]
// CHECK:STDOUT: %bound_method.9a1: <bound method> = bound_method %int_1.5b8, %Convert.specific_fn [concrete]
// CHECK:STDOUT: %int_1.5d2: %i32 = int_value 1 [concrete]
// CHECK:STDOUT: %struct_type.j.k: type = struct_type {.j: %i32, .k: %i32} [concrete]
// CHECK:STDOUT: %complete_type.cf7: <witness> = complete_type_witness %struct_type.j.k [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [concrete] {
// CHECK:STDOUT: .Int = %Core.Int
// CHECK:STDOUT: .ImplicitAs = %Core.ImplicitAs
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// 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: %.loc17_16: %Class.elem = field_decl j, element0 [concrete]
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %.loc17_11: %Class.elem = var_pattern %.loc17_16
// CHECK:STDOUT: }
// CHECK:STDOUT: %.var.loc17: ref %Class.elem = var <none>
// CHECK:STDOUT: %.loc23_14: %Class.elem = field_decl k, element1 [concrete]
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %.loc23_9: %Class.elem = var_pattern %.loc23_14
// CHECK:STDOUT: }
// CHECK:STDOUT: %.var.loc23: ref %Class.elem = var <none>
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %l.patt: %i32 = binding_pattern l
// CHECK:STDOUT: }
// CHECK:STDOUT: %int_0: Core.IntLiteral = int_value 0 [concrete = constants.%int_0.5c6]
// CHECK:STDOUT: %.loc29_18: type = splice_block %i32.loc29 [concrete = constants.%i32] {
// CHECK:STDOUT: %int_32.loc29: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc29: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: }
// CHECK:STDOUT: %impl.elem0.loc29: %.9c3 = impl_witness_access constants.%ImplicitAs.impl_witness.c75, element0 [concrete = constants.%Convert.956]
// CHECK:STDOUT: %bound_method.loc29_24.1: <bound method> = bound_method %int_0, %impl.elem0.loc29 [concrete = constants.%Convert.bound.d04]
// CHECK:STDOUT: %specific_fn.loc29: <specific function> = specific_function %impl.elem0.loc29, @Convert.2(constants.%int_32) [concrete = constants.%Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc29_24.2: <bound method> = bound_method %int_0, %specific_fn.loc29 [concrete = constants.%bound_method.b6e]
// CHECK:STDOUT: %int.convert_checked.loc29: init %i32 = call %bound_method.loc29_24.2(%int_0) [concrete = constants.%int_0.6a9]
// CHECK:STDOUT: %.loc29_24.1: %i32 = value_of_initializer %int.convert_checked.loc29 [concrete = constants.%int_0.6a9]
// CHECK:STDOUT: %.loc29_24.2: %i32 = converted %int_0, %.loc29_24.1 [concrete = constants.%int_0.6a9]
// CHECK:STDOUT: %l: %i32 = bind_name l, %.loc29_24.2
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %m.patt: %i32 = binding_pattern m
// CHECK:STDOUT: }
// CHECK:STDOUT: %int_1: Core.IntLiteral = int_value 1 [concrete = constants.%int_1.5b8]
// CHECK:STDOUT: %.loc35_16: type = splice_block %i32.loc35 [concrete = constants.%i32] {
// CHECK:STDOUT: %int_32.loc35: Core.IntLiteral = int_value 32 [concrete = constants.%int_32]
// CHECK:STDOUT: %i32.loc35: type = class_type @Int, @Int(constants.%int_32) [concrete = constants.%i32]
// CHECK:STDOUT: }
// CHECK:STDOUT: %impl.elem0.loc35: %.9c3 = impl_witness_access constants.%ImplicitAs.impl_witness.c75, element0 [concrete = constants.%Convert.956]
// CHECK:STDOUT: %bound_method.loc35_22.1: <bound method> = bound_method %int_1, %impl.elem0.loc35 [concrete = constants.%Convert.bound.ab5]
// CHECK:STDOUT: %specific_fn.loc35: <specific function> = specific_function %impl.elem0.loc35, @Convert.2(constants.%int_32) [concrete = constants.%Convert.specific_fn]
// CHECK:STDOUT: %bound_method.loc35_22.2: <bound method> = bound_method %int_1, %specific_fn.loc35 [concrete = constants.%bound_method.9a1]
// CHECK:STDOUT: %int.convert_checked.loc35: init %i32 = call %bound_method.loc35_22.2(%int_1) [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %.loc35_22.1: %i32 = value_of_initializer %int.convert_checked.loc35 [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %.loc35_22.2: %i32 = converted %int_1, %.loc35_22.1 [concrete = constants.%int_1.5d2]
// CHECK:STDOUT: %m: %i32 = bind_name m, %.loc35_22.2
// CHECK:STDOUT: %struct_type.j.k: type = struct_type {.j: %i32, .k: %i32} [concrete = constants.%struct_type.j.k]
// CHECK:STDOUT: %complete_type: <witness> = complete_type_witness %struct_type.j.k [concrete = constants.%complete_type.cf7]
// CHECK:STDOUT: complete_type_witness = %complete_type
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Class
// CHECK:STDOUT: .j = %.loc17_16
// CHECK:STDOUT: .k = %.loc23_14
// CHECK:STDOUT: .l = %l
// CHECK:STDOUT: .m = %m
// CHECK:STDOUT: }
// CHECK:STDOUT:
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