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//===--- UnwrappedLineFormatter.h - Format C++ code -------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
///
/// \file
/// Implements a combinatorial exploration of all the different
/// linebreaks unwrapped lines can be formatted in.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H
#define LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H
#include "ContinuationIndenter.h"
namespace clang {
namespace format {
class ContinuationIndenter;
class WhitespaceManager;
class UnwrappedLineFormatter {
public:
UnwrappedLineFormatter(ContinuationIndenter *Indenter,
WhitespaceManager *Whitespaces,
const FormatStyle &Style,
const AdditionalKeywords &Keywords,
const SourceManager &SourceMgr,
FormattingAttemptStatus *Status)
: Indenter(Indenter), Whitespaces(Whitespaces), Style(Style),
Keywords(Keywords), SourceMgr(SourceMgr), Status(Status) {}
/// Format the current block and return the penalty.
unsigned format(const SmallVectorImpl<AnnotatedLine *> &Lines,
bool DryRun = false, int AdditionalIndent = 0,
bool FixBadIndentation = false, unsigned FirstStartColumn = 0,
unsigned NextStartColumn = 0, unsigned LastStartColumn = 0);
private:
/// Add a new line and the required indent before the first Token
/// of the \c UnwrappedLine if there was no structural parsing error.
void formatFirstToken(const AnnotatedLine &Line,
const AnnotatedLine *PreviousLine,
const AnnotatedLine *PrevPrevLine,
const SmallVectorImpl<AnnotatedLine *> &Lines,
unsigned Indent, unsigned NewlineIndent);
/// Returns the column limit for a line, taking into account whether we
/// need an escaped newline due to a continued preprocessor directive.
unsigned getColumnLimit(bool InPPDirective,
const AnnotatedLine *NextLine) const;
// Cache to store the penalty of formatting a vector of AnnotatedLines
// starting from a specific additional offset. Improves performance if there
// are many nested blocks.
std::map<std::pair<const SmallVectorImpl<AnnotatedLine *> *, unsigned>,
unsigned>
PenaltyCache;
ContinuationIndenter *Indenter;
WhitespaceManager *Whitespaces;
const FormatStyle &Style;
const AdditionalKeywords &Keywords;
const SourceManager &SourceMgr;
FormattingAttemptStatus *Status;
};
} // end namespace format
} // end namespace clang
#endif // LLVM_CLANG_LIB_FORMAT_UNWRAPPEDLINEFORMATTER_H
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