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fe020ee08bae71ca593ed964bbf787e651fc5d4d
carbon-lang/toolchain/check/testdata/for/basic.carbon
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Dana Jansens fe020ee08b Make FacetAccessType evaluate to SymbolicBindingType for type-of a BindSymbolicName (#6115) 
The SymbolicBindingType refers to the type value that will be
substituted in for the BindSymbolicName, but holds onto the EntityNameId
from the BindSymbolicName instead of (or in addition to, for now) the
instruction.

The EntityNameId will be used to look in the ScopeStack to find the
witnesses either from the BindSymbolicName instruction, or other
instructions that specify `impls` constraints against the EntityName.

This will allow us to have the `T` in `I(T)` resolve to a `.Self`
reference in the type so that we get type equality with the binding's
type: `T:! I(.Self)`.
2025-10-06 18:56:43 +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/for.carbon
//
// AUTOUPDATE
// TIP: To test this file alone, run:
// TIP: bazel test //toolchain/testing:file_test --test_arg=--file_tests=toolchain/check/testdata/for/basic.carbon
// TIP: To dump output, run:
// TIP: bazel run //toolchain/testing:file_test -- --dump_output --file_tests=toolchain/check/testdata/for/basic.carbon
// --- fail_not_range.carbon
library "[[@TEST_NAME]]";
fn Run() {
// TODO: These diagnostics could be better. If nothing else, we should only diagnose once.
// CHECK:STDERR: fail_not_range.carbon:[[@LINE+8]]:7: error: cannot access member of interface `Core.Iterate` in type `{}` that does not implement that interface [MissingImplInMemberAccess]
// CHECK:STDERR: for (c: {} in {}) {
// CHECK:STDERR: ^~~~~~~~~~~~~
// CHECK:STDERR:
// CHECK:STDERR: fail_not_range.carbon:[[@LINE+4]]:7: error: cannot access member of interface `Core.Iterate` in type `{}` that does not implement that interface [MissingImplInMemberAccess]
// CHECK:STDERR: for (c: {} in {}) {
// CHECK:STDERR: ^~~~~~~~~~~~~
// CHECK:STDERR:
for (c: {} in {}) {
}
}
// --- trivial.carbon
library "[[@TEST_NAME]]";
class TrivialRange {
impl as Core.Iterate where .CursorType = () and .ElementType = () {
fn NewCursor[self: Self]() {}
fn Next[self: Self](cursor: ()*) -> Core.Optional(()) {
return Core.Optional(()).None();
}
}
}
fn Body();
fn AfterLoop();
fn Run() {
//@dump-sem-ir-begin
for (_: () in {} as TrivialRange) {
Body();
}
AfterLoop();
//@dump-sem-ir-end
}
// CHECK:STDOUT: --- trivial.carbon
// CHECK:STDOUT:
// CHECK:STDOUT: constants {
// CHECK:STDOUT: %TrivialRange: type = class_type @TrivialRange [concrete]
// CHECK:STDOUT: %Iterate.type: type = facet_type <@Iterate> [concrete]
// CHECK:STDOUT: %empty_tuple.type: type = tuple_type () [concrete]
// CHECK:STDOUT: %Copy.type: type = facet_type <@Copy> [concrete]
// CHECK:STDOUT: %T.be8: %Copy.type = bind_symbolic_name T, 0 [symbolic]
// CHECK:STDOUT: %Copy.impl_witness.c9a: <witness> = impl_witness imports.%Copy.impl_witness_table.955 [concrete]
// CHECK:STDOUT: %Copy.facet: %Copy.type = facet_value %empty_tuple.type, (%Copy.impl_witness.c9a) [concrete]
// CHECK:STDOUT: %Iterate.NewCursor.type: type = fn_type @Iterate.NewCursor [concrete]
// CHECK:STDOUT: %Iterate.Next.type: type = fn_type @Iterate.Next [concrete]
// CHECK:STDOUT: %Optional.HasValue.type.b77: type = fn_type @Optional.HasValue, @Optional(%T.be8) [symbolic]
// CHECK:STDOUT: %Optional.HasValue.110: %Optional.HasValue.type.b77 = struct_value () [symbolic]
// CHECK:STDOUT: %Optional.Get.type.81f: type = fn_type @Optional.Get, @Optional(%T.be8) [symbolic]
// CHECK:STDOUT: %Optional.Get.546: %Optional.Get.type.81f = struct_value () [symbolic]
// CHECK:STDOUT: %Iterate.impl_witness: <witness> = impl_witness @TrivialRange.%Iterate.impl_witness_table [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.type.81eeda.1: type = fn_type @TrivialRange.as.Iterate.impl.NewCursor.loc6_32.1 [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.d4796b.1: %TrivialRange.as.Iterate.impl.NewCursor.type.81eeda.1 = struct_value () [concrete]
// CHECK:STDOUT: %ptr.843: type = ptr_type %empty_tuple.type [concrete]
// CHECK:STDOUT: %Optional.68c: type = class_type @Optional, @Optional(%Copy.facet) [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.Next.type: type = fn_type @TrivialRange.as.Iterate.impl.Next [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.Next: %TrivialRange.as.Iterate.impl.Next.type = struct_value () [concrete]
// CHECK:STDOUT: %Iterate.facet: %Iterate.type = facet_value %TrivialRange, (%Iterate.impl_witness) [concrete]
// CHECK:STDOUT: %pattern_type.cb1: type = pattern_type %empty_tuple.type [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.type.81eeda.2: type = fn_type @TrivialRange.as.Iterate.impl.NewCursor.loc6_32.2 [concrete]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.d4796b.2: %TrivialRange.as.Iterate.impl.NewCursor.type.81eeda.2 = struct_value () [concrete]
// CHECK:STDOUT: %empty_struct_type: type = struct_type {} [concrete]
// CHECK:STDOUT: %Optional.HasValue.type.cac: type = fn_type @Optional.HasValue, @Optional(%Copy.facet) [concrete]
// CHECK:STDOUT: %Optional.HasValue.5e3: %Optional.HasValue.type.cac = struct_value () [concrete]
// CHECK:STDOUT: %Optional.Get.type.a4e: type = fn_type @Optional.Get, @Optional(%Copy.facet) [concrete]
// CHECK:STDOUT: %Optional.Get.1d7: %Optional.Get.type.a4e = struct_value () [concrete]
// CHECK:STDOUT: %Body.type: type = fn_type @Body [concrete]
// CHECK:STDOUT: %Body: %Body.type = struct_value () [concrete]
// CHECK:STDOUT: %AfterLoop.type: type = fn_type @AfterLoop [concrete]
// CHECK:STDOUT: %AfterLoop: %AfterLoop.type = struct_value () [concrete]
// CHECK:STDOUT: %TrivialRange.val: %TrivialRange = struct_value () [concrete]
// CHECK:STDOUT: %.298: type = fn_type_with_self_type %Iterate.NewCursor.type, %Iterate.facet [concrete]
// CHECK:STDOUT: %.b35: type = fn_type_with_self_type %Iterate.Next.type, %Iterate.facet [concrete]
// CHECK:STDOUT: %Optional.HasValue.specific_fn: <specific function> = specific_function %Optional.HasValue.5e3, @Optional.HasValue(%Copy.facet) [concrete]
// CHECK:STDOUT: %Optional.Get.specific_fn: <specific function> = specific_function %Optional.Get.1d7, @Optional.Get(%Copy.facet) [concrete]
// CHECK:STDOUT: %empty_tuple: %empty_tuple.type = tuple_value () [concrete]
// CHECK:STDOUT: %type_where: type = facet_type <type where .Self impls <CanDestroy>> [concrete]
// CHECK:STDOUT: %facet_value.ff9: %type_where = facet_value %empty_tuple.type, () [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.789: type = fn_type @DestroyT.binding.as_type.as.Destroy.impl.Op, @DestroyT.binding.as_type.as.Destroy.impl(%facet_value.ff9) [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.93e: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.789 = struct_value () [concrete]
// CHECK:STDOUT: %facet_value.136: %type_where = facet_value %Optional.68c, () [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.979: type = fn_type @DestroyT.binding.as_type.as.Destroy.impl.Op, @DestroyT.binding.as_type.as.Destroy.impl(%facet_value.136) [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.fea: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.979 = struct_value () [concrete]
// CHECK:STDOUT: %ptr.17e: type = ptr_type %Optional.68c [concrete]
// CHECK:STDOUT: %facet_value.441: %type_where = facet_value %TrivialRange, () [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.01c: type = fn_type @DestroyT.binding.as_type.as.Destroy.impl.Op, @DestroyT.binding.as_type.as.Destroy.impl(%facet_value.441) [concrete]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.72a: %DestroyT.binding.as_type.as.Destroy.impl.Op.type.01c = struct_value () [concrete]
// CHECK:STDOUT: %ptr.41d: type = ptr_type %TrivialRange [concrete]
// CHECK:STDOUT: %empty_tuple.type.as.Copy.impl.Op.type: type = fn_type @empty_tuple.type.as.Copy.impl.Op [concrete]
// CHECK:STDOUT: %empty_tuple.type.as.Copy.impl.Op: %empty_tuple.type.as.Copy.impl.Op.type = struct_value () [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: imports {
// CHECK:STDOUT: %Core.import_ref.1a3: %empty_tuple.type.as.Copy.impl.Op.type = import_ref Core//prelude/parts/copy, loc{{\d+_\d+}}, loaded [concrete = constants.%empty_tuple.type.as.Copy.impl.Op]
// CHECK:STDOUT: %Copy.impl_witness_table.955 = impl_witness_table (%Core.import_ref.1a3), @empty_tuple.type.as.Copy.impl [concrete]
// CHECK:STDOUT: %Core.import_ref.b87: @Optional.%Optional.HasValue.type (%Optional.HasValue.type.b77) = import_ref Core//prelude/parts/iterate, inst{{\d+}} [indirect], loaded [symbolic = @Optional.%Optional.HasValue (constants.%Optional.HasValue.110)]
// CHECK:STDOUT: %Core.import_ref.d08: @Optional.%Optional.Get.type (%Optional.Get.type.81f) = import_ref Core//prelude/parts/iterate, inst{{\d+}} [indirect], loaded [symbolic = @Optional.%Optional.Get (constants.%Optional.Get.546)]
// CHECK:STDOUT: }
// CHECK:STDOUT:
// CHECK:STDOUT: fn @Run() {
// CHECK:STDOUT: !entry:
// CHECK:STDOUT: name_binding_decl {
// CHECK:STDOUT: %_.patt: %pattern_type.cb1 = binding_pattern _ [concrete]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc18_18.1: %empty_struct_type = struct_literal ()
// CHECK:STDOUT: %TrivialRange.ref: type = name_ref TrivialRange, file.%TrivialRange.decl [concrete = constants.%TrivialRange]
// CHECK:STDOUT: %.loc18_18.2: ref %TrivialRange = temporary_storage
// CHECK:STDOUT: %.loc18_18.3: init %TrivialRange = class_init (), %.loc18_18.2 [concrete = constants.%TrivialRange.val]
// CHECK:STDOUT: %.loc18_18.4: ref %TrivialRange = temporary %.loc18_18.2, %.loc18_18.3
// CHECK:STDOUT: %.loc18_20.1: ref %TrivialRange = converted %.loc18_18.1, %.loc18_18.4
// CHECK:STDOUT: %impl.elem2: %.298 = impl_witness_access constants.%Iterate.impl_witness, element2 [concrete = constants.%TrivialRange.as.Iterate.impl.NewCursor.d4796b.2]
// CHECK:STDOUT: %bound_method.loc18_35.1: <bound method> = bound_method %.loc18_20.1, %impl.elem2
// CHECK:STDOUT: %.loc18_20.2: %TrivialRange = bind_value %.loc18_20.1
// CHECK:STDOUT: %NewCursor.ref: %TrivialRange.as.Iterate.impl.NewCursor.type.81eeda.1 = name_ref NewCursor, @TrivialRange.as.Iterate.impl.%TrivialRange.as.Iterate.impl.NewCursor.decl.loc6_32.1 [concrete = constants.%TrivialRange.as.Iterate.impl.NewCursor.d4796b.1]
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.bound: <bound method> = bound_method %.loc18_20.2, %NewCursor.ref
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.NewCursor.call: init %empty_tuple.type = call %TrivialRange.as.Iterate.impl.NewCursor.bound(%.loc18_20.2)
// CHECK:STDOUT: %var: ref %empty_tuple.type = var invalid
// CHECK:STDOUT: assign %var, %TrivialRange.as.Iterate.impl.NewCursor.call
// CHECK:STDOUT: br !for.next
// CHECK:STDOUT:
// CHECK:STDOUT: !for.next:
// CHECK:STDOUT: %addr.loc18_35.1: %ptr.843 = addr_of %var
// CHECK:STDOUT: %impl.elem3: %.b35 = impl_witness_access constants.%Iterate.impl_witness, element3 [concrete = constants.%TrivialRange.as.Iterate.impl.Next]
// CHECK:STDOUT: %bound_method.loc18_35.2: <bound method> = bound_method %.loc18_20.1, %impl.elem3
// CHECK:STDOUT: %.loc18_35.1: ref %Optional.68c = temporary_storage
// CHECK:STDOUT: %.loc18_20.3: %TrivialRange = bind_value %.loc18_20.1
// CHECK:STDOUT: %TrivialRange.as.Iterate.impl.Next.call: init %Optional.68c = call %bound_method.loc18_35.2(%.loc18_20.3, %addr.loc18_35.1) to %.loc18_35.1
// CHECK:STDOUT: %.loc18_35.2: ref %Optional.68c = temporary %.loc18_35.1, %TrivialRange.as.Iterate.impl.Next.call
// CHECK:STDOUT: %.loc18_35.3: %Optional.HasValue.type.cac = specific_constant imports.%Core.import_ref.b87, @Optional(constants.%Copy.facet) [concrete = constants.%Optional.HasValue.5e3]
// CHECK:STDOUT: %HasValue.ref: %Optional.HasValue.type.cac = name_ref HasValue, %.loc18_35.3 [concrete = constants.%Optional.HasValue.5e3]
// CHECK:STDOUT: %Optional.HasValue.bound: <bound method> = bound_method %.loc18_35.2, %HasValue.ref
// CHECK:STDOUT: %Optional.HasValue.specific_fn: <specific function> = specific_function %HasValue.ref, @Optional.HasValue(constants.%Copy.facet) [concrete = constants.%Optional.HasValue.specific_fn]
// CHECK:STDOUT: %bound_method.loc18_35.3: <bound method> = bound_method %.loc18_35.2, %Optional.HasValue.specific_fn
// CHECK:STDOUT: %.loc18_35.4: %Optional.68c = bind_value %.loc18_35.2
// CHECK:STDOUT: %Optional.HasValue.call: init bool = call %bound_method.loc18_35.3(%.loc18_35.4)
// CHECK:STDOUT: %.loc18_35.5: bool = value_of_initializer %Optional.HasValue.call
// CHECK:STDOUT: %.loc18_35.6: bool = converted %Optional.HasValue.call, %.loc18_35.5
// CHECK:STDOUT: if %.loc18_35.6 br !for.body else br !for.done
// CHECK:STDOUT:
// CHECK:STDOUT: !for.body:
// CHECK:STDOUT: %.loc18_35.7: %Optional.Get.type.a4e = specific_constant imports.%Core.import_ref.d08, @Optional(constants.%Copy.facet) [concrete = constants.%Optional.Get.1d7]
// CHECK:STDOUT: %Get.ref: %Optional.Get.type.a4e = name_ref Get, %.loc18_35.7 [concrete = constants.%Optional.Get.1d7]
// CHECK:STDOUT: %Optional.Get.bound: <bound method> = bound_method %.loc18_35.2, %Get.ref
// CHECK:STDOUT: %Optional.Get.specific_fn: <specific function> = specific_function %Get.ref, @Optional.Get(constants.%Copy.facet) [concrete = constants.%Optional.Get.specific_fn]
// CHECK:STDOUT: %bound_method.loc18_35.4: <bound method> = bound_method %.loc18_35.2, %Optional.Get.specific_fn
// CHECK:STDOUT: %.loc18_35.8: %Optional.68c = bind_value %.loc18_35.2
// CHECK:STDOUT: %Optional.Get.call: init %empty_tuple.type = call %bound_method.loc18_35.4(%.loc18_35.8)
// CHECK:STDOUT: %.loc18_12.1: type = splice_block %.loc18_12.3 [concrete = constants.%empty_tuple.type] {
// CHECK:STDOUT: %.loc18_12.2: %empty_tuple.type = tuple_literal ()
// CHECK:STDOUT: %.loc18_12.3: type = converted %.loc18_12.2, constants.%empty_tuple.type [concrete = constants.%empty_tuple.type]
// CHECK:STDOUT: }
// CHECK:STDOUT: %.loc18_35.9: ref %empty_tuple.type = temporary_storage
// CHECK:STDOUT: %.loc18_35.10: ref %empty_tuple.type = temporary %.loc18_35.9, %Optional.Get.call
// CHECK:STDOUT: %tuple: %empty_tuple.type = tuple_value () [concrete = constants.%empty_tuple]
// CHECK:STDOUT: %.loc18_35.11: %empty_tuple.type = converted %Optional.Get.call, %tuple [concrete = constants.%empty_tuple]
// CHECK:STDOUT: %_: %empty_tuple.type = bind_name _, %.loc18_35.11
// CHECK:STDOUT: %Body.ref: %Body.type = name_ref Body, file.%Body.decl [concrete = constants.%Body]
// CHECK:STDOUT: %Body.call: init %empty_tuple.type = call %Body.ref()
// CHECK:STDOUT: br !for.next
// CHECK:STDOUT:
// CHECK:STDOUT: !for.done:
// CHECK:STDOUT: %AfterLoop.ref: %AfterLoop.type = name_ref AfterLoop, file.%AfterLoop.decl [concrete = constants.%AfterLoop]
// CHECK:STDOUT: %AfterLoop.call: init %empty_tuple.type = call %AfterLoop.ref()
// CHECK:STDOUT: %facet_value.loc18_35.1: %type_where = facet_value constants.%empty_tuple.type, () [concrete = constants.%facet_value.ff9]
// CHECK:STDOUT: %.loc18_35.12: %type_where = converted constants.%empty_tuple.type, %facet_value.loc18_35.1 [concrete = constants.%facet_value.ff9]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.bound.loc18_35.1: <bound method> = bound_method %.loc18_35.10, constants.%DestroyT.binding.as_type.as.Destroy.impl.Op.93e
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %bound_method.loc18_35.5: <bound method> = bound_method %.loc18_35.10, %DestroyT.binding.as_type.as.Destroy.impl.Op.specific_fn.1
// CHECK:STDOUT: %addr.loc18_35.2: %ptr.843 = addr_of %.loc18_35.10
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.call.loc18_35.1: init %empty_tuple.type = call %bound_method.loc18_35.5(%addr.loc18_35.2)
// CHECK:STDOUT: %facet_value.loc18_35.2: %type_where = facet_value constants.%Optional.68c, () [concrete = constants.%facet_value.136]
// CHECK:STDOUT: %.loc18_35.13: %type_where = converted constants.%Optional.68c, %facet_value.loc18_35.2 [concrete = constants.%facet_value.136]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.bound.loc18_35.2: <bound method> = bound_method %.loc18_35.2, constants.%DestroyT.binding.as_type.as.Destroy.impl.Op.fea
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %bound_method.loc18_35.6: <bound method> = bound_method %.loc18_35.2, %DestroyT.binding.as_type.as.Destroy.impl.Op.specific_fn.2
// CHECK:STDOUT: %addr.loc18_35.3: %ptr.17e = addr_of %.loc18_35.2
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.call.loc18_35.2: init %empty_tuple.type = call %bound_method.loc18_35.6(%addr.loc18_35.3)
// CHECK:STDOUT: %facet_value.loc18_35.3: %type_where = facet_value constants.%empty_tuple.type, () [concrete = constants.%facet_value.ff9]
// CHECK:STDOUT: %.loc18_35.14: %type_where = converted constants.%empty_tuple.type, %facet_value.loc18_35.3 [concrete = constants.%facet_value.ff9]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.bound.loc18_35.3: <bound method> = bound_method %var, constants.%DestroyT.binding.as_type.as.Destroy.impl.Op.93e
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %bound_method.loc18_35.7: <bound method> = bound_method %var, %DestroyT.binding.as_type.as.Destroy.impl.Op.specific_fn.3
// CHECK:STDOUT: %addr.loc18_35.4: %ptr.843 = addr_of %var
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.call.loc18_35.3: init %empty_tuple.type = call %bound_method.loc18_35.7(%addr.loc18_35.4)
// CHECK:STDOUT: %facet_value.loc18_18: %type_where = facet_value constants.%TrivialRange, () [concrete = constants.%facet_value.441]
// CHECK:STDOUT: %.loc18_18.5: %type_where = converted constants.%TrivialRange, %facet_value.loc18_18 [concrete = constants.%facet_value.441]
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.bound.loc18_18: <bound method> = bound_method %.loc18_18.4, constants.%DestroyT.binding.as_type.as.Destroy.impl.Op.72a
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: %bound_method.loc18_18: <bound method> = bound_method %.loc18_18.4, %DestroyT.binding.as_type.as.Destroy.impl.Op.specific_fn.4
// CHECK:STDOUT: %addr.loc18_18: %ptr.41d = addr_of %.loc18_18.4
// CHECK:STDOUT: %DestroyT.binding.as_type.as.Destroy.impl.Op.call.loc18_18: init %empty_tuple.type = call %bound_method.loc18_18(%addr.loc18_18)
// CHECK:STDOUT: <elided>
// CHECK:STDOUT: }
// CHECK:STDOUT:
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