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carbon-lang/toolchain/check/testdata/where_expr/fail_not_facet.carbon
T
josh11bJosh LGeoff Romer
 a69c2630f9 Replace InterfaceType with FacetType (#4499) 
This does a few things:
* Replaces the single `TypeId` in the `FacetTypeInfo` struct with a
vector of `InterfaceId`, `SpecificId` pairs (sorted in id order)
representing the set of interface requirements of the facet type. This
will later be used to support facet types with multiple interface
requirements (as in `I & J` or `I where .Self impls J`).
* Replace `InterfaceType` instructions (used as the type of an
`InterfaceDecl` instruction) with `FacetType` instructions (introduced
in #4460) with a (newly introduced) `FacetTypeFromInterface()` function.
* Replace code that consumed `InterfaceType` values with code that
consumed `FaceType` values. I've generally left the assumption in the
code that it is dealing with a single interface, using the (newly
introduced) `FacetTypeInfo::TryAsSingleInterface`, and producing an
error otherwise. There isn't yet support for the `&` operator or `where
.Self impls`, so this is generally a good assumption for now, except you
can get a facet type with no associated interfaces from a `type
where`... expression. In some cases, the facet type value is pulled from
the evaluation of an `InterfaceDecl` instruction, where the single
interface assumption will hold permanently.
* Some related cleans up: nicer stringification and formatting of facet
types, suppression of some errors when there already was an error.

There is still a lot left to do, including:
* Type `type` should be a facet type with a reserved id, replacing the
built-in instruction.
* Code using `TryAsSingleInterface` should generally be upgraded to
handle more than (or less than) one interface. Name lookup should be
particularly exciting.
* Operator `&` should be defined on facet types, unioning their
interface and other requirements.
* Requirements from a `where` clause don't do anything yet.
* Impls and impl lookup need to resolve facet types, and do things like
determine if all the associated constants are given values.

---------

Co-authored-by: Josh L <josh11b@users.noreply.github.com>
Co-authored-by: Geoff Romer <gromer@google.com>
2024-11-11 18:01:50 +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/where_expr/fail_not_facet.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/where_expr/fail_not_facet.carbon
// --- fail_left_where_not_facet.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_left_where_not_facet.carbon:[[@LINE+4]]:10: error: left argument of `where` operator must be a facet type [WhereOnNonFacetType]
// CHECK:STDERR: fn F(T:! i32 where .Self == bool);
// CHECK:STDERR: ^~~
// CHECK:STDERR:
fn F(T:! i32 where .Self == bool);
// --- fail_left_where_unknown.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_left_where_unknown.carbon:[[@LINE+4]]:10: error: name `NOT_DECLARED` not found [NameNotFound]
// CHECK:STDERR: fn G(U:! NOT_DECLARED where .Self == bool);
// CHECK:STDERR: ^~~~~~~~~~~~
// CHECK:STDERR:
fn G(U:! NOT_DECLARED where .Self == bool);
// --- fail_var.carbon
library "[[@TEST_NAME]]";
// CHECK:STDERR: fail_var.carbon:[[@LINE+3]]:8: error: name `e` not found [NameNotFound]
// CHECK:STDERR: var v: e where .x = 3;
// CHECK:STDERR: ^
var v: e where .x = 3;
// CHECK:STDOUT: --- fail_left_where_not_facet.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %Int32.type: type = fn_type @Int32 [template]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [template]
// CHECK:STDOUT: %Int32: %Int32.type = struct_value () [template]
// CHECK:STDOUT: %.Self: <error> = bind_symbolic_name .Self, 0 [symbolic]
// CHECK:STDOUT: %Bool.type: type = fn_type @Bool [template]
// CHECK:STDOUT: %Bool: %Bool.type = struct_value () [template]
// CHECK:STDOUT: %T: <error> = bind_symbolic_name T, 0 [symbolic]
// CHECK:STDOUT: %T.patt: <error> = symbolic_binding_pattern T, 0 [symbolic]
// CHECK:STDOUT: %F.type: type = fn_type @F [template]
// CHECK:STDOUT: %F: %F.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: .Int32 = %import_ref.1
// CHECK:STDOUT: .Bool = %import_ref.2
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %import_ref.1: %Int32.type = import_ref Core//prelude/types, inst+15, loaded [template = constants.%Int32]
// CHECK:STDOUT: %import_ref.2: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .F = %F.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %F.decl: %F.type = fn_decl @F [template = constants.%F] {
// CHECK:STDOUT: %T.patt.loc8_6.1: <error> = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc8_6.2 (constants.%T.patt)]
// CHECK:STDOUT: %T.param_patt: <error> = value_param_pattern %T.patt.loc8_6.1, runtime_param<invalid> [symbolic = %T.patt.loc8_6.2 (constants.%T.patt)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %int.make_type_32: init type = call constants.%Int32() [template = i32]
// CHECK:STDOUT: %.loc8_10.1: type = value_of_initializer %int.make_type_32 [template = i32]
// CHECK:STDOUT: %.loc8_10.2: type = converted %int.make_type_32, %.loc8_10.1 [template = i32]
// CHECK:STDOUT: %.Self: <error> = bind_symbolic_name .Self, 0 [symbolic = constants.%.Self]
// CHECK:STDOUT: %.Self.ref: <error> = name_ref .Self, %.Self [symbolic = constants.%.Self]
// CHECK:STDOUT: %bool.make_type: init type = call constants.%Bool() [template = bool]
// CHECK:STDOUT: %.loc8_14: type = where_expr %.Self [template = <error>] {
// CHECK:STDOUT: requirement_equivalent %.Self.ref, %bool.make_type
// CHECK:STDOUT: }
// CHECK:STDOUT: %T.param: <error> = value_param runtime_param<invalid>
// CHECK:STDOUT: %T.loc8_6.1: <error> = bind_symbolic_name T, 0, %T.param [symbolic = %T.loc8_6.2 (constants.%T)]
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Int32() -> type = "int.make_type_32";
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Bool() -> type = "bool.make_type";
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @F(%T.loc8_6.1: <error>) {
// CHECK:STDOUT: %T.loc8_6.2: <error> = bind_symbolic_name T, 0 [symbolic = %T.loc8_6.2 (constants.%T)]
// CHECK:STDOUT: %T.patt.loc8_6.2: <error> = symbolic_binding_pattern T, 0 [symbolic = %T.patt.loc8_6.2 (constants.%T.patt)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%T.param_patt: <error>);
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @F(constants.%T) {
// CHECK:STDOUT: %T.loc8_6.2 => constants.%T
// CHECK:STDOUT: %T.patt.loc8_6.2 => constants.%T
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_left_where_unknown.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %.Self: <error> = bind_symbolic_name .Self, 0 [symbolic]
// CHECK:STDOUT: %Bool.type: type = fn_type @Bool [template]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [template]
// CHECK:STDOUT: %Bool: %Bool.type = struct_value () [template]
// CHECK:STDOUT: %U: <error> = bind_symbolic_name U, 0 [symbolic]
// CHECK:STDOUT: %U.patt: <error> = symbolic_binding_pattern U, 0 [symbolic]
// CHECK:STDOUT: %G.type: type = fn_type @G [template]
// CHECK:STDOUT: %G: %G.type = struct_value () [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// CHECK:STDOUT: .Bool = %import_ref
// CHECK:STDOUT: import Core//prelude
// CHECK:STDOUT: import Core//prelude/...
// CHECK:STDOUT: }
// CHECK:STDOUT: %import_ref: %Bool.type = import_ref Core//prelude/types/bool, inst+5, loaded [template = constants.%Bool]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: file {
// CHECK:STDOUT: package: <namespace> = namespace [template] {
// CHECK:STDOUT: .Core = imports.%Core
// CHECK:STDOUT: .G = %G.decl
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %G.decl: %G.type = fn_decl @G [template = constants.%G] {
// CHECK:STDOUT: %U.patt.loc8_6.1: <error> = symbolic_binding_pattern U, 0 [symbolic = %U.patt.loc8_6.2 (constants.%U.patt)]
// CHECK:STDOUT: %U.param_patt: <error> = value_param_pattern %U.patt.loc8_6.1, runtime_param<invalid> [symbolic = %U.patt.loc8_6.2 (constants.%U.patt)]
// CHECK:STDOUT: } {
// CHECK:STDOUT: %NOT_DECLARED.ref: <error> = name_ref NOT_DECLARED, <error> [template = <error>]
// CHECK:STDOUT: %.Self: <error> = bind_symbolic_name .Self, 0 [symbolic = constants.%.Self]
// CHECK:STDOUT: %.Self.ref: <error> = name_ref .Self, %.Self [symbolic = constants.%.Self]
// CHECK:STDOUT: %bool.make_type: init type = call constants.%Bool() [template = bool]
// CHECK:STDOUT: %.loc8: type = where_expr %.Self [template = <error>] {
// CHECK:STDOUT: requirement_equivalent %.Self.ref, %bool.make_type
// CHECK:STDOUT: }
// CHECK:STDOUT: %U.param: <error> = value_param runtime_param<invalid>
// CHECK:STDOUT: %U.loc8_6.1: <error> = bind_symbolic_name U, 0, %U.param [symbolic = %U.loc8_6.2 (constants.%U)]
// CHECK:STDOUT: }
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Bool() -> type = "bool.make_type";
// CHECK:STDOUT:
// CHECK:STDOUT: generic fn @G(%U.loc8_6.1: <error>) {
// CHECK:STDOUT: %U.loc8_6.2: <error> = bind_symbolic_name U, 0 [symbolic = %U.loc8_6.2 (constants.%U)]
// CHECK:STDOUT: %U.patt.loc8_6.2: <error> = symbolic_binding_pattern U, 0 [symbolic = %U.patt.loc8_6.2 (constants.%U.patt)]
// CHECK:STDOUT:
// CHECK:STDOUT: fn(%U.param_patt: <error>);
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: specific @G(constants.%U) {
// CHECK:STDOUT: %U.loc8_6.2 => constants.%U
// CHECK:STDOUT: %U.patt.loc8_6.2 => constants.%U
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: --- fail_var.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %.Self: <error> = bind_symbolic_name .Self, 0 [symbolic]
// CHECK:STDOUT: %.1: i32 = int_value 3 [template]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core: <namespace> = namespace file.%Core.import, [template] {
// 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: .v = %v
// CHECK:STDOUT: }
// CHECK:STDOUT: %Core.import = import Core
// CHECK:STDOUT: %e.ref: <error> = name_ref e, <error> [template = <error>]
// CHECK:STDOUT: %.Self: <error> = bind_symbolic_name .Self, 0 [symbolic = constants.%.Self]
// CHECK:STDOUT: %.Self.ref: <error> = name_ref .Self, %.Self [symbolic = constants.%.Self]
// CHECK:STDOUT: %.loc7_21: i32 = int_value 3 [template = constants.%.1]
// CHECK:STDOUT: %.loc7_10: type = where_expr %.Self [template = <error>] {
// CHECK:STDOUT: requirement_rewrite <error>, <error>
// CHECK:STDOUT: }
// CHECK:STDOUT: %v.var: ref <error> = var v
// CHECK:STDOUT: %v: ref <error> = bind_name v, %v.var
// CHECK:STDOUT: }
// CHECK:STDOUT:
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