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//===--- AffectedRangeManager.h - Format C++ code ---------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
///
/// \file
/// AffectedRangeManager class manages affected ranges in the code.
///
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
#define LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
#include "clang/Basic/SourceManager.h"
namespace clang {
namespace format {
struct FormatToken;
class AnnotatedLine;
class AffectedRangeManager {
public:
AffectedRangeManager(const SourceManager &SourceMgr,
const ArrayRef<CharSourceRange> Ranges)
: SourceMgr(SourceMgr), Ranges(Ranges.begin(), Ranges.end()) {}
// Determines which lines are affected by the SourceRanges given as input.
// Returns \c true if at least one line in \p Lines or one of their
// children is affected.
bool computeAffectedLines(SmallVectorImpl<AnnotatedLine *> &Lines);
// Returns true if 'Range' intersects with one of the input ranges.
bool affectsCharSourceRange(const CharSourceRange &Range);
private:
// Returns true if the range from 'First' to 'Last' intersects with one of the
// input ranges.
bool affectsTokenRange(const FormatToken &First, const FormatToken &Last,
bool IncludeLeadingNewlines);
// Returns true if one of the input ranges intersect the leading empty lines
// before 'Tok'.
bool affectsLeadingEmptyLines(const FormatToken &Tok);
// Marks all lines between I and E as well as all their children as affected.
void markAllAsAffected(SmallVectorImpl<AnnotatedLine *>::iterator I,
SmallVectorImpl<AnnotatedLine *>::iterator E);
// Determines whether 'Line' is affected by the SourceRanges given as input.
// Returns \c true if line or one if its children is affected.
bool nonPPLineAffected(AnnotatedLine *Line, const AnnotatedLine *PreviousLine,
SmallVectorImpl<AnnotatedLine *> &Lines);
const SourceManager &SourceMgr;
const SmallVector<CharSourceRange, 8> Ranges;
};
} // namespace format
} // namespace clang
#endif // LLVM_CLANG_LIB_FORMAT_AFFECTEDRANGEMANAGER_H
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