1//===--- Relation.cpp --------------------------------------------*- C++-*-===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9#include "Relation.h"
10
11#include <algorithm>
12
13namespace clang {
14namespace clangd {
15
16llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const RelationKind R) {
17 switch (R) {
18 case RelationKind::BaseOf:
19 return OS << "BaseOf";
20 case RelationKind::OverriddenBy:
21 return OS << "OverriddenBy";
22 }
23 llvm_unreachable("Unhandled RelationKind enum.");
24}
25
26llvm::raw_ostream &operator<<(llvm::raw_ostream &OS, const Relation &R) {
27 return OS << R.Subject << " " << R.Predicate << " " << R.Object;
28}
29
30llvm::iterator_range<RelationSlab::iterator>
31RelationSlab::lookup(const SymbolID &Subject, RelationKind Predicate) const {
32 auto IterPair = std::equal_range(first: Relations.begin(), last: Relations.end(),
33 val: Relation{.Subject: Subject, .Predicate: Predicate, .Object: SymbolID{}},
34 comp: [](const Relation &A, const Relation &B) {
35 return std::tie(args: A.Subject, args: A.Predicate) <
36 std::tie(args: B.Subject, args: B.Predicate);
37 });
38 return {IterPair.first, IterPair.second};
39}
40
41RelationSlab RelationSlab::Builder::build() && {
42 // Sort in SPO order.
43 llvm::sort(C&: Relations);
44
45 // Remove duplicates.
46 Relations.erase(first: std::unique(first: Relations.begin(), last: Relations.end()),
47 last: Relations.end());
48
49 return RelationSlab{std::move(Relations)};
50}
51
52} // namespace clangd
53} // namespace clang
54

source code of clang-tools-extra/clangd/index/Relation.cpp