7d42f3f746
The main motivation behind this is to cleanup the WhitespaceManager and make it more extensible for future alignment etc. features. Specifically, WhitespaceManager has started to copy more and more code that is already present in FormatToken. Instead, I think it makes more sense to actually store a reference to each FormatToken for each change. This has as a consequence led to a change in the calculation of indent levels. Now, we actually compute them for each Token ahead of time, which should be more efficient as it removes an unsigned value for the ParenState, which is used during the combinatorial exploration of the solution space. No functional changes intended. Review: https://reviews.llvm.org/D29300 llvm-svn: 293616
72 lines
2.6 KiB
C++
72 lines
2.6 KiB
C++
//===--- UnwrappedLineFormatter.h - Format C++ code -------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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///
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/// \file
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/// \brief Implements a combinartorial exploration of all the different
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/// linebreaks unwrapped lines can be formatted in.
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///
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H
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#define LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H
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#include "ContinuationIndenter.h"
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#include "clang/Format/Format.h"
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#include <map>
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namespace clang {
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namespace format {
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class ContinuationIndenter;
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class WhitespaceManager;
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class UnwrappedLineFormatter {
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public:
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UnwrappedLineFormatter(ContinuationIndenter *Indenter,
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WhitespaceManager *Whitespaces,
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const FormatStyle &Style,
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const AdditionalKeywords &Keywords,
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bool *IncompleteFormat)
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: Indenter(Indenter), Whitespaces(Whitespaces), Style(Style),
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Keywords(Keywords), IncompleteFormat(IncompleteFormat) {}
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/// \brief Format the current block and return the penalty.
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unsigned format(const SmallVectorImpl<AnnotatedLine *> &Lines,
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bool DryRun = false, int AdditionalIndent = 0,
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bool FixBadIndentation = false);
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private:
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/// \brief Add a new line and the required indent before the first Token
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/// of the \c UnwrappedLine if there was no structural parsing error.
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void formatFirstToken(const AnnotatedLine &Line,
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const AnnotatedLine *PreviousLine, unsigned Indent);
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/// \brief Returns the column limit for a line, taking into account whether we
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/// need an escaped newline due to a continued preprocessor directive.
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unsigned getColumnLimit(bool InPPDirective,
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const AnnotatedLine *NextLine) const;
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// Cache to store the penalty of formatting a vector of AnnotatedLines
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// starting from a specific additional offset. Improves performance if there
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// are many nested blocks.
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std::map<std::pair<const SmallVectorImpl<AnnotatedLine *> *, unsigned>,
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unsigned>
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PenaltyCache;
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ContinuationIndenter *Indenter;
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WhitespaceManager *Whitespaces;
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const FormatStyle &Style;
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const AdditionalKeywords &Keywords;
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bool *IncompleteFormat;
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};
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} // end namespace format
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} // end namespace clang
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#endif // LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H
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