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carbon-lang/toolchain/check/testdata/class/fail_init.carbon
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josh11bJosh LRichard Smith
 67f2c9ce26 Add a FacetValue instruction (#4545) 
The new `FacetValue` instruction represents `C as I` for some type `C`
and facet type `I`. It is named `FacetValue` instead of just `Facet` to
parallel the `FacetType` instruction.

This PR uses this instruction represent the facet value `Self` in an
`impl` declaration. This instruction will be used in the future to also
support things like:

* `C as I` where `C` is a class; and
* forming a specific for a generic with a `T:! I` parameter where `T` is
being given a concrete value.

(Here `I` is an interface or other non-`type` facet type.)

Also do some renaming and add some comments to make things a bit more
clear.

* `FacetTypeAccess` -> `FacetAccessType` to clarify this is not access
of a facet type, but access of the type of a facet
* `.facet_id` -> `.facet_value_inst_id` to parallel the `FacetValue`
instruction

`FacetAccessWitness` will be in a future PR.

---------

Co-authored-by: Josh L <josh11b@users.noreply.github.com>
Co-authored-by: Richard Smith <richard@metafoo.co.uk>
2024-11-21 22:29:53 +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_init.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/class/fail_init.carbon
class Class {
var a: i32;
var b: i32;
}
fn F() {
// CHECK:STDERR: fail_init.carbon:[[@LINE+4]]:3: error: cannot initialize class with 2 fields from struct with 1 field [StructInitElementCountMismatch]
// CHECK:STDERR: {.a = 1} as Class;
// CHECK:STDERR: ^~~~~~~~
// CHECK:STDERR:
{.a = 1} as Class;
// CHECK:STDERR: fail_init.carbon:[[@LINE+4]]:3: error: missing value for field `b` in struct initialization [StructInitMissingFieldInLiteral]
// CHECK:STDERR: {.a = 1, .c = 2} as Class;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~
// CHECK:STDERR:
{.a = 1, .c = 2} as Class;
// CHECK:STDERR: fail_init.carbon:[[@LINE+3]]:3: error: cannot initialize class with 2 fields from struct with 3 fields [StructInitElementCountMismatch]
// CHECK:STDERR: {.a = 1, .b = 2, .c = 3} as Class;
// CHECK:STDERR: ^~~~~~~~~~~~~~~~~~~~~~~~
{.a = 1, .b = 2, .c = 3} as Class;
}
// CHECK:STDOUT: --- fail_init.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Class: type = class_type @Class [template]
// CHECK:STDOUT: %.1: Core.IntLiteral = int_value 32 [template]
// CHECK:STDOUT: %Int.type: type = fn_type @Int [template]
// CHECK:STDOUT: %Int: %Int.type = struct_value () [template]
// CHECK:STDOUT: %i32: type = int_type signed, %.1 [template]
// CHECK:STDOUT: %.2: type = unbound_element_type %Class, %i32 [template]
// CHECK:STDOUT: %.3: type = struct_type {.a: %i32, .b: %i32} [template]
// CHECK:STDOUT: %.4: <witness> = complete_type_witness %.3 [template]
// CHECK:STDOUT: %F.type: type = fn_type @F [template]
// CHECK:STDOUT: %F: %F.type = struct_value () [template]
// CHECK:STDOUT: %.5: Core.IntLiteral = int_value 1 [template]
// CHECK:STDOUT: %.6: type = struct_type {.a: Core.IntLiteral} [template]
// CHECK:STDOUT: %.8: Core.IntLiteral = int_value 2 [template]
// CHECK:STDOUT: %.9: type = struct_type {.a: Core.IntLiteral, .c: Core.IntLiteral} [template]
// CHECK:STDOUT: %Convert.type.2: type = fn_type @Convert.1, @ImplicitAs(%i32) [template]
// CHECK:STDOUT: %Convert.type.14: type = fn_type @Convert.2, @impl.1(%.1) [template]
// CHECK:STDOUT: %Convert.14: %Convert.type.14 = struct_value () [template]
// CHECK:STDOUT: %.33: <witness> = interface_witness (%Convert.14) [template]
// CHECK:STDOUT: %.34: <bound method> = bound_method %.5, %Convert.14 [template]
// CHECK:STDOUT: %.35: <specific function> = specific_function %.34, @Convert.2(%.1) [template]
// CHECK:STDOUT: %.36: %i32 = int_value 1 [template]
// CHECK:STDOUT: %.37: Core.IntLiteral = int_value 3 [template]
// CHECK:STDOUT: %.38: type = struct_type {.a: Core.IntLiteral, .b: Core.IntLiteral, .c: Core.IntLiteral} [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: .Int = %import_ref.1
// CHECK:STDOUT: .ImplicitAs = %import_ref.2
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .Class = %Class.decl
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %Class.decl: type = class_decl @Class [template = constants.%Class] {} {}
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [template = constants.%F] {} {}
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: class @Class {
// CHECK:STDOUT: %.loc12_10.1: Core.IntLiteral = int_value 32 [template = constants.%.1]
// CHECK:STDOUT: %int.make_type_signed.loc12: init type = call constants.%Int(%.loc12_10.1) [template = constants.%i32]
// CHECK:STDOUT: %.loc12_10.2: type = value_of_initializer %int.make_type_signed.loc12 [template = constants.%i32]
// CHECK:STDOUT: %.loc12_10.3: type = converted %int.make_type_signed.loc12, %.loc12_10.2 [template = constants.%i32]
// CHECK:STDOUT: %.loc12_8: %.2 = field_decl a, element0 [template]
// CHECK:STDOUT: %.loc13_10.1: Core.IntLiteral = int_value 32 [template = constants.%.1]
// CHECK:STDOUT: %int.make_type_signed.loc13: init type = call constants.%Int(%.loc13_10.1) [template = constants.%i32]
// CHECK:STDOUT: %.loc13_10.2: type = value_of_initializer %int.make_type_signed.loc13 [template = constants.%i32]
// CHECK:STDOUT: %.loc13_10.3: type = converted %int.make_type_signed.loc13, %.loc13_10.2 [template = constants.%i32]
// CHECK:STDOUT: %.loc13_8: %.2 = field_decl b, element1 [template]
// CHECK:STDOUT: %.loc14: <witness> = complete_type_witness %.3 [template = constants.%.4]
// CHECK:STDOUT:
// CHECK:STDOUT: !members:
// CHECK:STDOUT: .Self = constants.%Class
// CHECK:STDOUT: .a = %.loc12_8
// CHECK:STDOUT: .b = %.loc13_8
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @F() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: %.loc21_9: Core.IntLiteral = int_value 1 [template = constants.%.5]
// CHECK:STDOUT: %.loc21_10.1: %.6 = struct_literal (%.loc21_9)
// CHECK:STDOUT: %Class.ref.loc21: type = name_ref Class, file.%Class.decl [template = constants.%Class]
// CHECK:STDOUT: %.loc21_10.2: ref %Class = temporary_storage
// CHECK:STDOUT: %.loc21_10.3: ref %Class = temporary %.loc21_10.2, <error>
// CHECK:STDOUT: %.loc21_12: ref %Class = converted %.loc21_10.1, %.loc21_10.3
// CHECK:STDOUT: %.loc26_9: Core.IntLiteral = int_value 1 [template = constants.%.5]
// CHECK:STDOUT: %.loc26_17: Core.IntLiteral = int_value 2 [template = constants.%.8]
// CHECK:STDOUT: %.loc26_18.1: %.9 = struct_literal (%.loc26_9, %.loc26_17)
// CHECK:STDOUT: %Class.ref.loc26: type = name_ref Class, file.%Class.decl [template = constants.%Class]
// CHECK:STDOUT: %.loc26_18.2: %Convert.type.2 = interface_witness_access constants.%.33, element0 [template = constants.%Convert.14]
// CHECK:STDOUT: %.loc26_18.3: <bound method> = bound_method %.loc26_9, %.loc26_18.2 [template = constants.%.34]
// CHECK:STDOUT: %.loc26_18.4: <specific function> = specific_function %.loc26_18.3, @Convert.2(constants.%.1) [template = constants.%.35]
// CHECK:STDOUT: %int.convert_checked: init %i32 = call %.loc26_18.4(%.loc26_9) [template = constants.%.36]
// CHECK:STDOUT: %.loc26_18.5: init %i32 = converted %.loc26_9, %int.convert_checked [template = constants.%.36]
// CHECK:STDOUT: %.loc26_18.6: ref %Class = temporary_storage
// CHECK:STDOUT: %.loc26_18.7: ref %i32 = class_element_access %.loc26_18.6, element0
// CHECK:STDOUT: %.loc26_18.8: init %i32 = initialize_from %.loc26_18.5 to %.loc26_18.7 [template = constants.%.36]
// CHECK:STDOUT: %.loc26_18.9: ref %Class = temporary %.loc26_18.6, <error>
// CHECK:STDOUT: %.loc26_20: ref %Class = converted %.loc26_18.1, %.loc26_18.9
// CHECK:STDOUT: %.loc30_9: Core.IntLiteral = int_value 1 [template = constants.%.5]
// CHECK:STDOUT: %.loc30_17: Core.IntLiteral = int_value 2 [template = constants.%.8]
// CHECK:STDOUT: %.loc30_25: Core.IntLiteral = int_value 3 [template = constants.%.37]
// CHECK:STDOUT: %.loc30_26.1: %.38 = struct_literal (%.loc30_9, %.loc30_17, %.loc30_25)
// CHECK:STDOUT: %Class.ref.loc30: type = name_ref Class, file.%Class.decl [template = constants.%Class]
// CHECK:STDOUT: %.loc30_26.2: ref %Class = temporary_storage
// CHECK:STDOUT: %.loc30_26.3: ref %Class = temporary %.loc30_26.2, <error>
// CHECK:STDOUT: %.loc30_28: ref %Class = converted %.loc30_26.1, %.loc30_26.3
// CHECK:STDOUT: return
// CHECK:STDOUT: }
// CHECK:STDOUT:
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