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 66