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Jon Ross-Perkins
5627f88c22
This allows ImportRefs to point at a potentially distant instruction, while still providing a LocId that can be used for diagnostics. I think this'll be used if we're trying to point ImportRefs at canonical instructions in distant IRs. It conveniently eliminates a special-case in check.cpp. Restructures LocIdAndInst::Untyped because I think it's not really needed after this change (the key non-import use was GetWithLocId, which I just give friend access for). Adding NoLoc for things that don't provide _any_ location because it turns out Inst can easily be passed in this way which was not what I had intended, but is used.
38 lines
1.4 KiB
C++
38 lines
1.4 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/check/interface.h"
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#include "toolchain/check/context.h"
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#include "toolchain/sem_ir/ids.h"
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#include "toolchain/sem_ir/inst.h"
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#include "toolchain/sem_ir/typed_insts.h"
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namespace Carbon::Check {
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auto BuildAssociatedEntity(Context& context, SemIR::InterfaceId interface_id,
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SemIR::InstId decl_id) -> SemIR::InstId {
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auto& interface_info = context.interfaces().Get(interface_id);
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if (!interface_info.is_being_defined()) {
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// This should only happen if the interface is erroneously defined more than
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// once.
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// TODO: Find a way to CHECK this.
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return SemIR::InstId::BuiltinError;
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}
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// Register this declaration as declaring an associated entity.
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auto index = SemIR::ElementIndex(
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context.args_type_info_stack().PeekCurrentBlockContents().size());
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context.args_type_info_stack().AddInstId(decl_id);
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// Name lookup for the declaration's name should name the associated entity,
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// not the declaration itself.
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auto type_id = context.GetAssociatedEntityType(
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interface_id, context.insts().Get(decl_id).type_id());
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return context.AddInst({context.insts().GetLocId(decl_id),
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SemIR::AssociatedEntity{type_id, index, decl_id}});
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}
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} // namespace Carbon::Check
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