1//===--- AffectedRangeManager.h - Format C++ code ---------------*- 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/// \file
10/// AffectedRangeManager class manages affected ranges in the code.
11///
12//===----------------------------------------------------------------------===//
13
14#ifndef LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
15#define LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
16
17#include "clang/Basic/SourceManager.h"
18
19namespace clang {
20namespace format {
21
22struct FormatToken;
23class AnnotatedLine;
24
25class AffectedRangeManager {
26public:
27 AffectedRangeManager(const SourceManager &SourceMgr,
28 const ArrayRef<CharSourceRange> Ranges)
29 : SourceMgr(SourceMgr), Ranges(Ranges.begin(), Ranges.end()) {}
30
31 // Determines which lines are affected by the SourceRanges given as input.
32 // Returns \c true if at least one line in \p Lines or one of their
33 // children is affected.
34 bool computeAffectedLines(SmallVectorImpl<AnnotatedLine *> &Lines);
35
36 // Returns true if 'Range' intersects with one of the input ranges.
37 bool affectsCharSourceRange(const CharSourceRange &Range);
38
39private:
40 // Returns true if the range from 'First' to 'Last' intersects with one of the
41 // input ranges.
42 bool affectsTokenRange(const FormatToken &First, const FormatToken &Last,
43 bool IncludeLeadingNewlines);
44
45 // Returns true if one of the input ranges intersect the leading empty lines
46 // before 'Tok'.
47 bool affectsLeadingEmptyLines(const FormatToken &Tok);
48
49 // Marks all lines between I and E as well as all their children as affected.
50 void markAllAsAffected(SmallVectorImpl<AnnotatedLine *>::iterator I,
51 SmallVectorImpl<AnnotatedLine *>::iterator E);
52
53 // Determines whether 'Line' is affected by the SourceRanges given as input.
54 // Returns \c true if line or one if its children is affected.
55 bool nonPPLineAffected(AnnotatedLine *Line, const AnnotatedLine *PreviousLine,
56 SmallVectorImpl<AnnotatedLine *> &Lines);
57
58 const SourceManager &SourceMgr;
59 const SmallVector<CharSourceRange, 8> Ranges;
60};
61
62} // namespace format
63} // namespace clang
64
65#endif // LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
66

source code of clang/lib/Format/AffectedRangeManager.h