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1 //===--- AffectedRangeManager.h - Format C++ code ---------------*- C++ -*-===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8 ///
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9 /// \file
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10 /// AffectedRangeManager class manages affected ranges in the code.
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11 ///
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12 //===----------------------------------------------------------------------===//
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13
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14 #ifndef LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
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15 #define LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
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16
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17 #include "clang/Basic/SourceManager.h"
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18
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19 namespace clang {
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20 namespace format {
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21
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22 struct FormatToken;
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23 class AnnotatedLine;
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24
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25 class AffectedRangeManager {
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26 public:
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27 AffectedRangeManager(const SourceManager &SourceMgr,
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28 const ArrayRef<CharSourceRange> Ranges)
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29 : SourceMgr(SourceMgr), Ranges(Ranges.begin(), Ranges.end()) {}
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30
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31 // Determines which lines are affected by the SourceRanges given as input.
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32 // Returns \c true if at least one line in \p Lines or one of their
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33 // children is affected.
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34 bool computeAffectedLines(SmallVectorImpl<AnnotatedLine *> &Lines);
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35
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36 // Returns true if 'Range' intersects with one of the input ranges.
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37 bool affectsCharSourceRange(const CharSourceRange &Range);
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38
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39 private:
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40 // Returns true if the range from 'First' to 'Last' intersects with one of the
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41 // input ranges.
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42 bool affectsTokenRange(const FormatToken &First, const FormatToken &Last,
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43 bool IncludeLeadingNewlines);
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44
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45 // Returns true if one of the input ranges intersect the leading empty lines
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46 // before 'Tok'.
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47 bool affectsLeadingEmptyLines(const FormatToken &Tok);
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48
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49 // Marks all lines between I and E as well as all their children as affected.
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50 void markAllAsAffected(SmallVectorImpl<AnnotatedLine *>::iterator I,
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51 SmallVectorImpl<AnnotatedLine *>::iterator E);
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52
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53 // Determines whether 'Line' is affected by the SourceRanges given as input.
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54 // Returns \c true if line or one if its children is affected.
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55 bool nonPPLineAffected(AnnotatedLine *Line, const AnnotatedLine *PreviousLine,
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56 SmallVectorImpl<AnnotatedLine *> &Lines);
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57
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58 const SourceManager &SourceMgr;
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59 const SmallVector<CharSourceRange, 8> Ranges;
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60 };
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61
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62 } // namespace format
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63 } // namespace clang
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64
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65 #endif // LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
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