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//===- EditedSource.h - Collection of source edits --------------*- 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
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_CLANG_EDIT_EDITEDSOURCE_H
#define LLVM_CLANG_EDIT_EDITEDSOURCE_H
#include "clang/Basic/IdentifierTable.h"
#include "clang/Basic/LLVM.h"
#include "clang/Basic/SourceLocation.h"
#include "clang/Edit/FileOffset.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringRef.h"
#include "llvm/Support/Allocator.h"
#include <map>
#include <tuple>
#include <utility>
namespace clang {
class LangOptions;
class PPConditionalDirectiveRecord;
class SourceManager;
namespace edit {
class Commit;
class EditsReceiver;
class EditedSource {
const SourceManager &SourceMgr;
const LangOptions &LangOpts;
const PPConditionalDirectiveRecord *PPRec;
struct FileEdit {
StringRef Text;
unsigned RemoveLen = 0;
FileEdit() = default;
};
using FileEditsTy = std::map<FileOffset, FileEdit>;
FileEditsTy FileEdits;
struct MacroArgUse {
IdentifierInfo *Identifier;
SourceLocation ImmediateExpansionLoc;
// Location of argument use inside the top-level macro
SourceLocation UseLoc;
bool operator==(const MacroArgUse &Other) const {
return std::tie(Identifier, ImmediateExpansionLoc, UseLoc) ==
std::tie(Other.Identifier, Other.ImmediateExpansionLoc,
Other.UseLoc);
}
};
llvm::DenseMap<unsigned, SmallVector<MacroArgUse, 2>> ExpansionToArgMap;
SmallVector<std::pair<SourceLocation, MacroArgUse>, 2>
CurrCommitMacroArgExps;
IdentifierTable IdentTable;
llvm::BumpPtrAllocator StrAlloc;
public:
EditedSource(const SourceManager &SM, const LangOptions &LangOpts,
const PPConditionalDirectiveRecord *PPRec = nullptr)
: SourceMgr(SM), LangOpts(LangOpts), PPRec(PPRec), IdentTable(LangOpts) {}
const SourceManager &getSourceManager() const { return SourceMgr; }
const LangOptions &getLangOpts() const { return LangOpts; }
const PPConditionalDirectiveRecord *getPPCondDirectiveRecord() const {
return PPRec;
}
bool canInsertInOffset(SourceLocation OrigLoc, FileOffset Offs);
bool commit(const Commit &commit);
void applyRewrites(EditsReceiver &receiver, bool adjustRemovals = true);
void clearRewrites();
StringRef copyString(StringRef str) { return str.copy(StrAlloc); }
StringRef copyString(const Twine &twine);
private:
bool commitInsert(SourceLocation OrigLoc, FileOffset Offs, StringRef text,
bool beforePreviousInsertions);
bool commitInsertFromRange(SourceLocation OrigLoc, FileOffset Offs,
FileOffset InsertFromRangeOffs, unsigned Len,
bool beforePreviousInsertions);
void commitRemove(SourceLocation OrigLoc, FileOffset BeginOffs, unsigned Len);
StringRef getSourceText(FileOffset BeginOffs, FileOffset EndOffs,
bool &Invalid);
FileEditsTy::iterator getActionForOffset(FileOffset Offs);
void deconstructMacroArgLoc(SourceLocation Loc,
SourceLocation &ExpansionLoc,
MacroArgUse &ArgUse);
void startingCommit();
void finishedCommit();
};
} // namespace edit
} // namespace clang
#endif // LLVM_CLANG_EDIT_EDITEDSOURCE_H
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