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//===--- RawCommentList.h - Classes for processing raw comments -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_AST_RAW_COMMENT_LIST_H
#define LLVM_CLANG_AST_RAW_COMMENT_LIST_H
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/ArrayRef.h"
namespace clang {
class ASTContext;
class ASTReader;
class Decl;
namespace comments {
class FullComment;
} // end namespace comments
class RawComment {
public:
enum CommentKind {
RCK_Invalid, ///< Invalid comment
RCK_OrdinaryBCPL, ///< Any normal BCPL comments
RCK_OrdinaryC, ///< Any normal C comment
RCK_BCPLSlash, ///< \code /// stuff \endcode
RCK_BCPLExcl, ///< \code //! stuff \endcode
RCK_JavaDoc, ///< \code /** stuff */ \endcode
RCK_Qt, ///< \code /*! stuff */ \endcode, also used by HeaderDoc
RCK_Merged ///< Two or more documentation comments merged together
};
RawComment() : Kind(RCK_Invalid), IsAlmostTrailingComment(false) { }
RawComment(const SourceManager &SourceMgr, SourceRange SR,
bool Merged = false);
CommentKind getKind() const LLVM_READONLY {
return (CommentKind) Kind;
}
bool isInvalid() const LLVM_READONLY {
return Kind == RCK_Invalid;
}
bool isMerged() const LLVM_READONLY {
return Kind == RCK_Merged;
}
/// Is this comment attached to any declaration?
bool isAttached() const LLVM_READONLY {
return IsAttached;
}
void setAttached() {
IsAttached = true;
}
/// Returns true if it is a comment that should be put after a member:
/// \code ///< stuff \endcode
/// \code //!< stuff \endcode
/// \code /**< stuff */ \endcode
/// \code /*!< stuff */ \endcode
bool isTrailingComment() const LLVM_READONLY {
assert(isDocumentation());
return IsTrailingComment;
}
/// Returns true if it is a probable typo:
/// \code //< stuff \endcode
/// \code /*< stuff */ \endcode
bool isAlmostTrailingComment() const LLVM_READONLY {
return IsAlmostTrailingComment;
}
/// Returns true if this comment is not a documentation comment.
bool isOrdinary() const LLVM_READONLY {
return (Kind == RCK_OrdinaryBCPL) || (Kind == RCK_OrdinaryC);
}
/// Returns true if this comment any kind of a documentation comment.
bool isDocumentation() const LLVM_READONLY {
return !isInvalid() && !isOrdinary();
}
/// Returns raw comment text with comment markers.
StringRef getRawText(const SourceManager &SourceMgr) const {
if (RawTextValid)
return RawText;
RawText = getRawTextSlow(SourceMgr);
RawTextValid = true;
return RawText;
}
SourceRange getSourceRange() const LLVM_READONLY {
return Range;
}
unsigned getBeginLine(const SourceManager &SM) const;
unsigned getEndLine(const SourceManager &SM) const;
const char *getBriefText(const ASTContext &Context) const {
if (BriefTextValid)
return BriefText;
return extractBriefText(Context);
}
/// Parse the comment, assuming it is attached to decl \c D.
comments::FullComment *parse(const ASTContext &Context, const Decl *D) const;
private:
SourceRange Range;
mutable StringRef RawText;
mutable const char *BriefText;
mutable bool RawTextValid : 1; ///< True if RawText is valid
mutable bool BriefTextValid : 1; ///< True if BriefText is valid
unsigned Kind : 3;
/// True if comment is attached to a declaration in ASTContext.
bool IsAttached : 1;
bool IsTrailingComment : 1;
bool IsAlmostTrailingComment : 1;
mutable bool BeginLineValid : 1; ///< True if BeginLine is valid
mutable bool EndLineValid : 1; ///< True if EndLine is valid
mutable unsigned BeginLine; ///< Cached line number
mutable unsigned EndLine; ///< Cached line number
/// \brief Constructor for AST deserialization.
RawComment(SourceRange SR, CommentKind K, bool IsTrailingComment,
bool IsAlmostTrailingComment) :
Range(SR), RawTextValid(false), BriefTextValid(false), Kind(K),
IsAttached(false), IsTrailingComment(IsTrailingComment),
IsAlmostTrailingComment(IsAlmostTrailingComment),
BeginLineValid(false), EndLineValid(false)
{ }
StringRef getRawTextSlow(const SourceManager &SourceMgr) const;
const char *extractBriefText(const ASTContext &Context) const;
friend class ASTReader;
};
/// \brief Compare comments' source locations.
template<>
class BeforeThanCompare<RawComment> {
const SourceManager &SM;
public:
explicit BeforeThanCompare(const SourceManager &SM) : SM(SM) { }
bool operator()(const RawComment &LHS, const RawComment &RHS) {
return SM.isBeforeInTranslationUnit(LHS.getSourceRange().getBegin(),
RHS.getSourceRange().getBegin());
}
bool operator()(const RawComment *LHS, const RawComment *RHS) {
return operator()(*LHS, *RHS);
}
};
/// \brief This class represents all comments included in the translation unit,
/// sorted in order of appearance in the translation unit.
class RawCommentList {
public:
RawCommentList(SourceManager &SourceMgr) :
SourceMgr(SourceMgr), OnlyWhitespaceSeen(true) { }
void addComment(const RawComment &RC, llvm::BumpPtrAllocator &Allocator);
ArrayRef<RawComment *> getComments() const {
return Comments;
}
private:
SourceManager &SourceMgr;
std::vector<RawComment *> Comments;
RawComment LastComment;
bool OnlyWhitespaceSeen;
void addCommentsToFront(const std::vector<RawComment *> &C) {
size_t OldSize = Comments.size();
Comments.resize(C.size() + OldSize);
std::copy_backward(Comments.begin(), Comments.begin() + OldSize,
Comments.end());
std::copy(C.begin(), C.end(), Comments.begin());
}
friend class ASTReader;
};
} // end namespace clang
#endif
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