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comparison clang/lib/Format/AffectedRangeManager.h @ 150:1d019706d866

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LLVM10
author anatofuz
date Thu, 13 Feb 2020 15:10:13 +0900
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147:c2174574ed3a 150:1d019706d866
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
19 namespace clang {
20 namespace format {
21
22 struct FormatToken;
23 class AnnotatedLine;
24
25 class AffectedRangeManager {
26 public:
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
39 private:
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