mirror of
https://github.com/carbon-language/carbon-lang.git
synced 2026-10-05 22:02:55 +01:00
Jon Ross-Perkins
5c567b892d
Note, there's still a TODO "Allow non-extern declarations in the same library."
42 lines
1.5 KiB
C++
42 lines
1.5 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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#ifndef CARBON_TOOLCHAIN_CHECK_MERGE_H_
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#define CARBON_TOOLCHAIN_CHECK_MERGE_H_
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#include "toolchain/check/context.h"
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#include "toolchain/sem_ir/ids.h"
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namespace Carbon::Check {
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struct PrevInstForMerge {
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// The resolved instruction.
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SemIR::Inst inst;
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// Whether an import was encountered during resolution.
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bool is_import;
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};
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// Resolves prev_inst_id for merging (or name conflicts). This handles imports
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// to return the instruction relevant for a merge. If an import is found and was
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// previously used, it notes it, although an invalid redeclaration may diagnose
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// for other reasons too.
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auto ResolvePrevInstForMerge(Context& context, Parse::NodeId node_id,
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SemIR::InstId prev_inst_id) -> PrevInstForMerge;
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// When the prior name lookup result is an import and we are successfully
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// merging, replace the name lookup result with the reference in the current
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// file.
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auto ReplacePrevInstForMerge(Context& context, SemIR::NameScopeId scope_id,
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SemIR::NameId name_id, SemIR::InstId new_inst_id)
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-> void;
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// Merges an import ref at new_inst_id another at prev_inst_id. May print a
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// diagnostic if merging is invalid.
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auto MergeImportRef(Context& context, SemIR::InstId new_inst_id,
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SemIR::InstId prev_inst_id) -> void;
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} // namespace Carbon::Check
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#endif // CARBON_TOOLCHAIN_CHECK_MERGE_H_
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