mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-09-24 22:02:23 +01:00
Jon Ross-PerkinsandRichard Smith
292a9d3cb4
This addresses the const reliance of ResolvePrevInstForMerge by checking the imported instruction, testing with `alias` name conflicts. Given the need to examine structure, the helper function feels like it now gets in the way, so I'm just removing it. --------- Co-authored-by: Richard Smith <richard@metafoo.co.uk>
526 lines
21 KiB
C++
526 lines
21 KiB
C++
// 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 "toolchain/base/kind_switch.h"
|
|
#include "toolchain/check/class.h"
|
|
#include "toolchain/check/context.h"
|
|
#include "toolchain/check/convert.h"
|
|
#include "toolchain/check/decl_name_stack.h"
|
|
#include "toolchain/check/merge.h"
|
|
#include "toolchain/check/modifiers.h"
|
|
#include "toolchain/sem_ir/ids.h"
|
|
#include "toolchain/sem_ir/typed_insts.h"
|
|
|
|
namespace Carbon::Check {
|
|
|
|
// If `type_id` is a class type, get its corresponding `SemIR::Class` object.
|
|
// Otherwise returns `nullptr`.
|
|
static auto TryGetAsClass(Context& context, SemIR::TypeId type_id)
|
|
-> SemIR::Class* {
|
|
auto class_type = context.types().TryGetAs<SemIR::ClassType>(type_id);
|
|
if (!class_type) {
|
|
return nullptr;
|
|
}
|
|
return &context.classes().Get(class_type->class_id);
|
|
}
|
|
|
|
auto HandleClassIntroducer(Context& context, Parse::ClassIntroducerId node_id)
|
|
-> bool {
|
|
// Create an instruction block to hold the instructions created as part of the
|
|
// class signature, such as generic parameters.
|
|
context.inst_block_stack().Push();
|
|
// Push the bracketing node.
|
|
context.node_stack().Push(node_id);
|
|
// Optional modifiers and the name follow.
|
|
context.decl_state_stack().Push(DeclState::Class);
|
|
context.decl_name_stack().PushScopeAndStartName();
|
|
return true;
|
|
}
|
|
|
|
// Adds the name to name lookup. If there's a conflict, tries to merge. May
|
|
// update class_decl and class_info when merging.
|
|
static auto MergeOrAddName(Context& context, Parse::AnyClassDeclId node_id,
|
|
const DeclNameStack::NameContext& name_context,
|
|
SemIR::InstId class_decl_id,
|
|
SemIR::ClassDecl& class_decl,
|
|
SemIR::Class& class_info, bool is_definition,
|
|
bool is_extern) -> void {
|
|
auto prev_id =
|
|
context.decl_name_stack().LookupOrAddName(name_context, class_decl_id);
|
|
if (!prev_id.is_valid()) {
|
|
return;
|
|
}
|
|
|
|
auto prev_class_id = SemIR::ClassId::Invalid;
|
|
auto prev_import_ir_id = SemIR::ImportIRId::Invalid;
|
|
CARBON_KIND_SWITCH(context.insts().Get(prev_id)) {
|
|
case CARBON_KIND(SemIR::ClassDecl class_decl): {
|
|
prev_class_id = class_decl.class_id;
|
|
break;
|
|
}
|
|
case CARBON_KIND(SemIR::ImportRefLoaded import_ref): {
|
|
auto import_ir_inst =
|
|
context.import_ir_insts().Get(import_ref.import_ir_inst_id);
|
|
|
|
// Verify the decl so that things like aliases are name conflicts.
|
|
const auto* import_ir =
|
|
context.import_irs().Get(import_ir_inst.ir_id).sem_ir;
|
|
if (!import_ir->insts().Is<SemIR::ClassDecl>(import_ir_inst.inst_id)) {
|
|
break;
|
|
}
|
|
|
|
// Use the type to get the ID.
|
|
if (auto class_type = context.insts().TryGetAs<SemIR::ClassType>(
|
|
context.constant_values().Get(prev_id).inst_id())) {
|
|
prev_class_id = class_type->class_id;
|
|
prev_import_ir_id = import_ir_inst.ir_id;
|
|
}
|
|
break;
|
|
}
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!prev_class_id.is_valid()) {
|
|
// This is a redeclaration of something other than a class.
|
|
context.DiagnoseDuplicateName(class_decl_id, prev_id);
|
|
return;
|
|
}
|
|
|
|
// TODO: Fix prev_is_extern logic.
|
|
if (MergeClassRedecl(context, node_id, class_info,
|
|
/*new_is_import=*/false, is_definition, is_extern,
|
|
prev_class_id, /*prev_is_extern=*/false,
|
|
prev_import_ir_id)) {
|
|
// When merging, use the existing entity rather than adding a new one.
|
|
class_decl.class_id = prev_class_id;
|
|
}
|
|
}
|
|
|
|
static auto BuildClassDecl(Context& context, Parse::AnyClassDeclId node_id,
|
|
bool is_definition)
|
|
-> std::tuple<SemIR::ClassId, SemIR::InstId> {
|
|
auto param_refs_id =
|
|
context.node_stack().PopIf<Parse::NodeKind::TuplePattern>().value_or(
|
|
SemIR::InstBlockId::Invalid);
|
|
auto implicit_param_refs_id =
|
|
context.node_stack().PopIf<Parse::NodeKind::ImplicitParamList>().value_or(
|
|
SemIR::InstBlockId::Invalid);
|
|
|
|
auto name_context = context.decl_name_stack().FinishName();
|
|
context.node_stack()
|
|
.PopAndDiscardSoloNodeId<Parse::NodeKind::ClassIntroducer>();
|
|
|
|
// Process modifiers.
|
|
CheckAccessModifiersOnDecl(context, Lex::TokenKind::Class,
|
|
name_context.target_scope_id);
|
|
LimitModifiersOnDecl(context,
|
|
KeywordModifierSet::Class | KeywordModifierSet::Access |
|
|
KeywordModifierSet::Extern,
|
|
Lex::TokenKind::Class);
|
|
RestrictExternModifierOnDecl(context, Lex::TokenKind::Class,
|
|
name_context.target_scope_id, is_definition);
|
|
|
|
auto modifiers = context.decl_state_stack().innermost().modifier_set;
|
|
if (!!(modifiers & KeywordModifierSet::Access)) {
|
|
context.TODO(context.decl_state_stack().innermost().modifier_node_id(
|
|
ModifierOrder::Access),
|
|
"access modifier");
|
|
}
|
|
|
|
bool is_extern = !!(modifiers & KeywordModifierSet::Extern);
|
|
auto inheritance_kind =
|
|
!!(modifiers & KeywordModifierSet::Abstract) ? SemIR::Class::Abstract
|
|
: !!(modifiers & KeywordModifierSet::Base) ? SemIR::Class::Base
|
|
: SemIR::Class::Final;
|
|
|
|
context.decl_state_stack().Pop(DeclState::Class);
|
|
auto decl_block_id = context.inst_block_stack().Pop();
|
|
|
|
// Add the class declaration.
|
|
auto class_decl = SemIR::ClassDecl{SemIR::TypeId::TypeType,
|
|
SemIR::ClassId::Invalid, decl_block_id};
|
|
auto class_decl_id = context.AddPlaceholderInst({node_id, class_decl});
|
|
|
|
// TODO: Store state regarding is_extern.
|
|
SemIR::Class class_info = {
|
|
.name_id = name_context.name_id_for_new_inst(),
|
|
.enclosing_scope_id = name_context.enclosing_scope_id_for_new_inst(),
|
|
.implicit_param_refs_id = implicit_param_refs_id,
|
|
.param_refs_id = param_refs_id,
|
|
// `.self_type_id` depends on the ClassType, so is set below.
|
|
.self_type_id = SemIR::TypeId::Invalid,
|
|
.decl_id = class_decl_id,
|
|
.inheritance_kind = inheritance_kind};
|
|
|
|
MergeOrAddName(context, node_id, name_context, class_decl_id, class_decl,
|
|
class_info, is_definition, is_extern);
|
|
|
|
// Create a new class if this isn't a valid redeclaration.
|
|
bool is_new_class = !class_decl.class_id.is_valid();
|
|
if (is_new_class) {
|
|
// TODO: If this is an invalid redeclaration of a non-class entity or there
|
|
// was an error in the qualifier, we will have lost track of the class name
|
|
// here. We should keep track of it even if the name is invalid.
|
|
class_decl.class_id = context.classes().Add(class_info);
|
|
}
|
|
|
|
// Write the class ID into the ClassDecl.
|
|
context.ReplaceInstBeforeConstantUse(class_decl_id, class_decl);
|
|
|
|
if (is_new_class) {
|
|
// Build the `Self` type using the resulting type constant.
|
|
auto& class_info = context.classes().Get(class_decl.class_id);
|
|
class_info.self_type_id = context.GetTypeIdForTypeInst(class_decl_id);
|
|
}
|
|
|
|
return {class_decl.class_id, class_decl_id};
|
|
}
|
|
|
|
auto HandleClassDecl(Context& context, Parse::ClassDeclId node_id) -> bool {
|
|
BuildClassDecl(context, node_id, /*is_definition=*/false);
|
|
context.decl_name_stack().PopScope();
|
|
return true;
|
|
}
|
|
|
|
auto HandleClassDefinitionStart(Context& context,
|
|
Parse::ClassDefinitionStartId node_id) -> bool {
|
|
auto [class_id, class_decl_id] =
|
|
BuildClassDecl(context, node_id, /*is_definition=*/true);
|
|
auto& class_info = context.classes().Get(class_id);
|
|
|
|
// Track that this declaration is the definition.
|
|
if (!class_info.is_defined()) {
|
|
class_info.definition_id = class_decl_id;
|
|
class_info.scope_id = context.name_scopes().Add(
|
|
class_decl_id, SemIR::NameId::Invalid, class_info.enclosing_scope_id);
|
|
}
|
|
|
|
// Enter the class scope.
|
|
context.scope_stack().Push(class_decl_id, class_info.scope_id);
|
|
|
|
// Introduce `Self`.
|
|
context.name_scopes()
|
|
.Get(class_info.scope_id)
|
|
.names.insert({SemIR::NameId::SelfType,
|
|
context.types().GetInstId(class_info.self_type_id)});
|
|
|
|
context.inst_block_stack().Push();
|
|
context.node_stack().Push(node_id, class_id);
|
|
context.args_type_info_stack().Push();
|
|
|
|
// TODO: Handle the case where there's control flow in the class body. For
|
|
// example:
|
|
//
|
|
// class C {
|
|
// var v: if true then i32 else f64;
|
|
// }
|
|
//
|
|
// We may need to track a list of instruction blocks here, as we do for a
|
|
// function.
|
|
class_info.body_block_id = context.inst_block_stack().PeekOrAdd();
|
|
return true;
|
|
}
|
|
|
|
// Diagnoses a class-specific declaration appearing outside a class.
|
|
static auto DiagnoseClassSpecificDeclOutsideClass(Context& context,
|
|
SemIRLoc loc,
|
|
Lex::TokenKind tok) -> void {
|
|
CARBON_DIAGNOSTIC(ClassSpecificDeclOutsideClass, Error,
|
|
"`{0}` declaration can only be used in a class.",
|
|
Lex::TokenKind);
|
|
context.emitter().Emit(loc, ClassSpecificDeclOutsideClass, tok);
|
|
}
|
|
|
|
// Returns the declaration of the immediately-enclosing class scope, or
|
|
// diagonses if there isn't one.
|
|
static auto GetEnclosingClassOrDiagnose(Context& context, SemIRLoc loc,
|
|
Lex::TokenKind tok)
|
|
-> std::optional<SemIR::ClassDecl> {
|
|
auto class_scope = context.GetCurrentScopeAs<SemIR::ClassDecl>();
|
|
if (!class_scope) {
|
|
DiagnoseClassSpecificDeclOutsideClass(context, loc, tok);
|
|
}
|
|
return class_scope;
|
|
}
|
|
|
|
// Diagnoses a class-specific declaration that is repeated within a class, but
|
|
// is not permitted to be repeated.
|
|
static auto DiagnoseClassSpecificDeclRepeated(Context& context,
|
|
SemIRLoc new_loc,
|
|
SemIRLoc prev_loc,
|
|
Lex::TokenKind tok) -> void {
|
|
CARBON_DIAGNOSTIC(ClassSpecificDeclRepeated, Error,
|
|
"Multiple `{0}` declarations in class.{1}", Lex::TokenKind,
|
|
std::string);
|
|
const llvm::StringRef extra = tok == Lex::TokenKind::Base
|
|
? " Multiple inheritance is not permitted."
|
|
: "";
|
|
CARBON_DIAGNOSTIC(ClassSpecificDeclPrevious, Note,
|
|
"Previous `{0}` declaration is here.", Lex::TokenKind);
|
|
context.emitter()
|
|
.Build(new_loc, ClassSpecificDeclRepeated, tok, extra.str())
|
|
.Note(prev_loc, ClassSpecificDeclPrevious, tok)
|
|
.Emit();
|
|
}
|
|
|
|
auto HandleAdaptIntroducer(Context& context,
|
|
Parse::AdaptIntroducerId /*node_id*/) -> bool {
|
|
context.decl_state_stack().Push(DeclState::Adapt);
|
|
return true;
|
|
}
|
|
|
|
auto HandleAdaptDecl(Context& context, Parse::AdaptDeclId node_id) -> bool {
|
|
auto [adapted_type_node, adapted_type_expr_id] =
|
|
context.node_stack().PopExprWithNodeId();
|
|
|
|
// Process modifiers. `extend` is permitted, no others are allowed.
|
|
LimitModifiersOnDecl(context, KeywordModifierSet::Extend,
|
|
Lex::TokenKind::Adapt);
|
|
auto modifiers = context.decl_state_stack().innermost().modifier_set;
|
|
context.decl_state_stack().Pop(DeclState::Adapt);
|
|
|
|
auto enclosing_class_decl =
|
|
GetEnclosingClassOrDiagnose(context, node_id, Lex::TokenKind::Adapt);
|
|
if (!enclosing_class_decl) {
|
|
return true;
|
|
}
|
|
|
|
auto& class_info = context.classes().Get(enclosing_class_decl->class_id);
|
|
if (class_info.adapt_id.is_valid()) {
|
|
DiagnoseClassSpecificDeclRepeated(context, node_id, class_info.adapt_id,
|
|
Lex::TokenKind::Adapt);
|
|
return true;
|
|
}
|
|
|
|
auto adapted_type_id = ExprAsType(context, node_id, adapted_type_expr_id);
|
|
adapted_type_id = context.AsCompleteType(adapted_type_id, [&] {
|
|
CARBON_DIAGNOSTIC(IncompleteTypeInAdaptDecl, Error,
|
|
"Adapted type `{0}` is an incomplete type.",
|
|
SemIR::TypeId);
|
|
return context.emitter().Build(node_id, IncompleteTypeInAdaptDecl,
|
|
adapted_type_id);
|
|
});
|
|
|
|
// Build a SemIR representation for the declaration.
|
|
class_info.adapt_id =
|
|
context.AddInst({node_id, SemIR::AdaptDecl{adapted_type_id}});
|
|
|
|
// Extend the class scope with the adapted type's scope if requested.
|
|
if (!!(modifiers & KeywordModifierSet::Extend)) {
|
|
auto extended_scope_id = SemIR::NameScopeId::Invalid;
|
|
if (adapted_type_id == SemIR::TypeId::Error) {
|
|
// Recover by not extending any scope. We instead set has_error to true
|
|
// below.
|
|
} else if (auto* adapted_class_info =
|
|
TryGetAsClass(context, adapted_type_id)) {
|
|
extended_scope_id = adapted_class_info->scope_id;
|
|
CARBON_CHECK(adapted_class_info->scope_id.is_valid())
|
|
<< "Complete class should have a scope";
|
|
} else {
|
|
// TODO: Accept any type that has a scope.
|
|
context.TODO(node_id, "extending non-class type");
|
|
}
|
|
|
|
auto& class_scope = context.name_scopes().Get(class_info.scope_id);
|
|
if (extended_scope_id.is_valid()) {
|
|
class_scope.extended_scopes.push_back(extended_scope_id);
|
|
} else {
|
|
class_scope.has_error = true;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
auto HandleBaseIntroducer(Context& context, Parse::BaseIntroducerId /*node_id*/)
|
|
-> bool {
|
|
context.decl_state_stack().Push(DeclState::Base);
|
|
return true;
|
|
}
|
|
|
|
auto HandleBaseColon(Context& /*context*/, Parse::BaseColonId /*node_id*/)
|
|
-> bool {
|
|
return true;
|
|
}
|
|
|
|
namespace {
|
|
// Information gathered about a base type specified in a `base` declaration.
|
|
struct BaseInfo {
|
|
// A `BaseInfo` representing an erroneous base.
|
|
static const BaseInfo Error;
|
|
|
|
SemIR::TypeId type_id;
|
|
SemIR::NameScopeId scope_id;
|
|
};
|
|
constexpr BaseInfo BaseInfo::Error = {.type_id = SemIR::TypeId::Error,
|
|
.scope_id = SemIR::NameScopeId::Invalid};
|
|
} // namespace
|
|
|
|
// Diagnoses an attempt to derive from a final type.
|
|
static auto DiagnoseBaseIsFinal(Context& context, Parse::NodeId node_id,
|
|
SemIR::TypeId base_type_id) -> void {
|
|
CARBON_DIAGNOSTIC(BaseIsFinal, Error,
|
|
"Deriving from final type `{0}`. Base type must be an "
|
|
"`abstract` or `base` class.",
|
|
SemIR::TypeId);
|
|
context.emitter().Emit(node_id, BaseIsFinal, base_type_id);
|
|
}
|
|
|
|
// Checks that the specified base type is valid.
|
|
static auto CheckBaseType(Context& context, Parse::NodeId node_id,
|
|
SemIR::InstId base_expr_id) -> BaseInfo {
|
|
auto base_type_id = ExprAsType(context, node_id, base_expr_id);
|
|
base_type_id = context.AsCompleteType(base_type_id, [&] {
|
|
CARBON_DIAGNOSTIC(IncompleteTypeInBaseDecl, Error,
|
|
"Base `{0}` is an incomplete type.", SemIR::TypeId);
|
|
return context.emitter().Build(node_id, IncompleteTypeInBaseDecl,
|
|
base_type_id);
|
|
});
|
|
|
|
if (base_type_id == SemIR::TypeId::Error) {
|
|
return BaseInfo::Error;
|
|
}
|
|
|
|
auto* base_class_info = TryGetAsClass(context, base_type_id);
|
|
|
|
// The base must not be a final class.
|
|
if (!base_class_info) {
|
|
// For now, we treat all types that aren't introduced by a `class`
|
|
// declaration as being final classes.
|
|
// TODO: Once we have a better idea of which types are considered to be
|
|
// classes, produce a better diagnostic for deriving from a non-class type.
|
|
DiagnoseBaseIsFinal(context, node_id, base_type_id);
|
|
return BaseInfo::Error;
|
|
}
|
|
if (base_class_info->inheritance_kind == SemIR::Class::Final) {
|
|
DiagnoseBaseIsFinal(context, node_id, base_type_id);
|
|
}
|
|
|
|
CARBON_CHECK(base_class_info->scope_id.is_valid())
|
|
<< "Complete class should have a scope";
|
|
return {.type_id = base_type_id, .scope_id = base_class_info->scope_id};
|
|
}
|
|
|
|
auto HandleBaseDecl(Context& context, Parse::BaseDeclId node_id) -> bool {
|
|
auto [base_type_node_id, base_type_expr_id] =
|
|
context.node_stack().PopExprWithNodeId();
|
|
|
|
// Process modifiers. `extend` is required, no others are allowed.
|
|
LimitModifiersOnDecl(context, KeywordModifierSet::Extend,
|
|
Lex::TokenKind::Base);
|
|
auto modifiers = context.decl_state_stack().innermost().modifier_set;
|
|
if (!(modifiers & KeywordModifierSet::Extend)) {
|
|
CARBON_DIAGNOSTIC(BaseMissingExtend, Error,
|
|
"Missing `extend` before `base` declaration in class.");
|
|
context.emitter().Emit(node_id, BaseMissingExtend);
|
|
}
|
|
context.decl_state_stack().Pop(DeclState::Base);
|
|
|
|
auto enclosing_class_decl =
|
|
GetEnclosingClassOrDiagnose(context, node_id, Lex::TokenKind::Base);
|
|
if (!enclosing_class_decl) {
|
|
return true;
|
|
}
|
|
|
|
auto& class_info = context.classes().Get(enclosing_class_decl->class_id);
|
|
if (class_info.base_id.is_valid()) {
|
|
DiagnoseClassSpecificDeclRepeated(context, node_id, class_info.base_id,
|
|
Lex::TokenKind::Base);
|
|
return true;
|
|
}
|
|
|
|
auto base_info = CheckBaseType(context, base_type_node_id, base_type_expr_id);
|
|
|
|
// The `base` value in the class scope has an unbound element type. Instance
|
|
// binding will be performed when it's found by name lookup into an instance.
|
|
auto field_type_id =
|
|
context.GetUnboundElementType(class_info.self_type_id, base_info.type_id);
|
|
class_info.base_id = context.AddInst(
|
|
{node_id,
|
|
SemIR::BaseDecl{field_type_id, base_info.type_id,
|
|
SemIR::ElementIndex(context.args_type_info_stack()
|
|
.PeekCurrentBlockContents()
|
|
.size())}});
|
|
|
|
// Add a corresponding field to the object representation of the class.
|
|
// TODO: Consider whether we want to use `partial T` here.
|
|
// TODO: Should we diagnose if there are already any fields?
|
|
context.args_type_info_stack().AddInstId(context.AddInstInNoBlock(
|
|
{node_id,
|
|
SemIR::StructTypeField{SemIR::NameId::Base, base_info.type_id}}));
|
|
|
|
// Bind the name `base` in the class to the base field.
|
|
context.decl_name_stack().AddNameOrDiagnoseDuplicate(
|
|
context.decl_name_stack().MakeUnqualifiedName(node_id,
|
|
SemIR::NameId::Base),
|
|
class_info.base_id);
|
|
|
|
// Extend the class scope with the base class.
|
|
if (!!(modifiers & KeywordModifierSet::Extend)) {
|
|
auto& class_scope = context.name_scopes().Get(class_info.scope_id);
|
|
if (base_info.scope_id.is_valid()) {
|
|
class_scope.extended_scopes.push_back(base_info.scope_id);
|
|
} else {
|
|
class_scope.has_error = true;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
auto HandleClassDefinition(Context& context,
|
|
Parse::ClassDefinitionId /*node_id*/) -> bool {
|
|
auto fields_id = context.args_type_info_stack().Pop();
|
|
auto class_id =
|
|
context.node_stack().Pop<Parse::NodeKind::ClassDefinitionStart>();
|
|
context.inst_block_stack().Pop();
|
|
|
|
// The class type is now fully defined. Compute its object representation.
|
|
auto& class_info = context.classes().Get(class_id);
|
|
if (class_info.adapt_id.is_valid()) {
|
|
class_info.object_repr_id = SemIR::TypeId::Error;
|
|
if (class_info.base_id.is_valid()) {
|
|
CARBON_DIAGNOSTIC(AdaptWithBase, Error,
|
|
"Adapter cannot have a base class.");
|
|
CARBON_DIAGNOSTIC(AdaptBaseHere, Note, "`base` declaration is here.");
|
|
context.emitter()
|
|
.Build(class_info.adapt_id, AdaptWithBase)
|
|
.Note(class_info.base_id, AdaptBaseHere)
|
|
.Emit();
|
|
} else if (!context.inst_blocks().Get(fields_id).empty()) {
|
|
auto first_field_id = context.inst_blocks().Get(fields_id).front();
|
|
CARBON_DIAGNOSTIC(AdaptWithFields, Error, "Adapter cannot have fields.");
|
|
CARBON_DIAGNOSTIC(AdaptFieldHere, Note,
|
|
"First field declaration is here.");
|
|
context.emitter()
|
|
.Build(class_info.adapt_id, AdaptWithFields)
|
|
.Note(first_field_id, AdaptFieldHere)
|
|
.Emit();
|
|
} else {
|
|
// The object representation of the adapter is the object representation
|
|
// of the adapted type.
|
|
auto adapted_type_id = context.insts()
|
|
.GetAs<SemIR::AdaptDecl>(class_info.adapt_id)
|
|
.adapted_type_id;
|
|
// If we adapt an adapter, directly track the non-adapter type we're
|
|
// adapting so that we have constant-time access to it.
|
|
if (auto adapted_class =
|
|
context.types().TryGetAs<SemIR::ClassType>(adapted_type_id)) {
|
|
auto& adapted_class_info =
|
|
context.classes().Get(adapted_class->class_id);
|
|
if (adapted_class_info.adapt_id.is_valid()) {
|
|
adapted_type_id = adapted_class_info.object_repr_id;
|
|
}
|
|
}
|
|
class_info.object_repr_id = adapted_type_id;
|
|
}
|
|
} else {
|
|
class_info.object_repr_id = context.GetStructType(fields_id);
|
|
}
|
|
|
|
// The decl_name_stack and scopes are popped by `ProcessNodeIds`.
|
|
return true;
|
|
}
|
|
|
|
} // namespace Carbon::Check
|