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https://github.com/carbon-language/carbon-lang.git
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Richard Smith
a74ca9071b
In preparation for shifting from `TypeId`s potentially representing attached types to always representing unattached types, using [terminology suggested on Discord](https://discord.com/channels/655572317891461132/963846118964350976/1359286326779973712). This change causes us to track slightly more type spelling information through SemIR. One change that has significant impact on the SemIR output is that we now build a `struct_type` instruction in each class representing the types of the fields, including the spelling used for those types. This is now no longer always identical to the corresponding canonical `struct_type` for the object representation, so it's built separately and owned by the class. Also remove `TypeBlock` support entirely, as its only use was representing `TupleType`s, which now use an `InstBlock`.
55 lines
1.7 KiB
C++
55 lines
1.7 KiB
C++
// Part of the Carbon Language project, under the Apache License v2.0 with LLVM
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// Exceptions. See /LICENSE for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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#include "toolchain/sem_ir/class.h"
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#include "toolchain/sem_ir/file.h"
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#include "toolchain/sem_ir/generic.h"
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#include "toolchain/sem_ir/ids.h"
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#include "toolchain/sem_ir/typed_insts.h"
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namespace Carbon::SemIR {
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static auto GetFoundationType(const File& file, SpecificId specific_id,
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InstId inst_id) -> TypeId {
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if (!inst_id.has_value()) {
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return TypeId::None;
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}
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if (inst_id == SemIR::ErrorInst::SingletonInstId) {
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return ErrorInst::SingletonTypeId;
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}
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return TypeId::ForTypeConstant(GetConstantValueInSpecific(
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file, specific_id,
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file.insts().GetAs<AnyFoundationDecl>(inst_id).foundation_type_inst_id));
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}
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auto Class::GetAdaptedType(const File& file, SpecificId specific_id) const
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-> TypeId {
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return GetFoundationType(file, specific_id, adapt_id);
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}
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auto Class::GetBaseType(const File& file, SpecificId specific_id) const
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-> TypeId {
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return GetFoundationType(file, specific_id, base_id);
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}
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auto Class::GetObjectRepr(const File& file, SpecificId specific_id) const
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-> TypeId {
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if (!complete_type_witness_id.has_value()) {
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return TypeId::None;
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}
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auto witness_id =
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GetConstantValueInSpecific(file, specific_id, complete_type_witness_id);
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if (witness_id == ErrorInst::SingletonConstantId) {
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return ErrorInst::SingletonTypeId;
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}
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return file.types().GetTypeIdForTypeInstId(
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file.insts()
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.GetAs<CompleteTypeWitness>(
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file.constant_values().GetInstId(witness_id))
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.object_repr_type_inst_id);
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}
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} // namespace Carbon::SemIR
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