1 //===--- UnwrappedLineFormatter.h - Format C++ code -------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 /// 10 /// \file 11 /// \brief Implements a combinartorial exploration of all the different 12 /// linebreaks unwrapped lines can be formatted in. 13 /// 14 //===----------------------------------------------------------------------===// 15 16 #ifndef LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H 17 #define LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H 18 19 #include "ContinuationIndenter.h" 20 #include "clang/Format/Format.h" 21 #include <map> 22 #include <queue> 23 #include <string> 24 25 namespace clang { 26 namespace format { 27 28 class ContinuationIndenter; 29 class WhitespaceManager; 30 31 class UnwrappedLineFormatter { 32 public: 33 UnwrappedLineFormatter(ContinuationIndenter *Indenter, 34 WhitespaceManager *Whitespaces, 35 const FormatStyle &Style, 36 const AdditionalKeywords &Keywords, 37 bool *IncompleteFormat) 38 : Indenter(Indenter), Whitespaces(Whitespaces), Style(Style), 39 Keywords(Keywords), IncompleteFormat(IncompleteFormat) {} 40 41 /// \brief Format the current block and return the penalty. 42 unsigned format(const SmallVectorImpl<AnnotatedLine *> &Lines, 43 bool DryRun = false, int AdditionalIndent = 0, 44 bool FixBadIndentation = false); 45 46 private: 47 /// \brief Add a new line and the required indent before the first Token 48 /// of the \c UnwrappedLine if there was no structural parsing error. 49 void formatFirstToken(FormatToken &RootToken, 50 const AnnotatedLine *PreviousLine, unsigned IndentLevel, 51 unsigned Indent, bool InPPDirective); 52 53 /// \brief Returns the column limit for a line, taking into account whether we 54 /// need an escaped newline due to a continued preprocessor directive. 55 unsigned getColumnLimit(bool InPPDirective, 56 const AnnotatedLine *NextLine) const; 57 58 // Cache to store the penalty of formatting a vector of AnnotatedLines 59 // starting from a specific additional offset. Improves performance if there 60 // are many nested blocks. 61 std::map<std::pair<const SmallVectorImpl<AnnotatedLine *> *, unsigned>, 62 unsigned> PenaltyCache; 63 64 ContinuationIndenter *Indenter; 65 WhitespaceManager *Whitespaces; 66 const FormatStyle &Style; 67 const AdditionalKeywords &Keywords; 68 bool *IncompleteFormat; 69 }; 70 } // end namespace format 71 } // end namespace clang 72 73 #endif // LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H 74
