carbon-lang/toolchain/sem_ir/absolute_node_id.h

// 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

#ifndef CARBON_TOOLCHAIN_SEM_IR_ABSOLUTE_NODE_ID_H_
#define CARBON_TOOLCHAIN_SEM_IR_ABSOLUTE_NODE_ID_H_

#include "toolchain/parse/tree_and_subtrees.h"
#include "toolchain/sem_ir/file.h"
#include "toolchain/sem_ir/ids.h"

namespace Carbon::SemIR {

// A specific node location in a file.
struct AbsoluteNodeId {
  CheckIRId check_ir_id;
  Parse::NodeId node_id;
};

// Resolves the `LocId` to a series of `NodeId`s, which may be in different
// files. The vector will have one entry if there were no imports, and multiple
// entries when imports are traversed. The final entry is the actual
// declaration.
//
// Note that the `LocId` here is typically not canonical, and it uses that fact
// for non-canonical locations built from an `ExportDecl` instruction.
auto GetAbsoluteNodeId(const File* sem_ir, LocId loc_id)
    -> llvm::SmallVector<AbsoluteNodeId>;

}  // namespace Carbon::SemIR

#endif  // CARBON_TOOLCHAIN_SEM_IR_ABSOLUTE_NODE_ID_H_