6024e5c395
clang 20.0.0 (based on r547379) from build 12806354. Bug: http://b/379133546 Test: N/A Change-Id: I2eb8938af55d809de674be63cb30cf27e801862b Upstream-Commit: ad834e67b1105d15ef907f6255d4c96e8e733f57
134 lines
4.3 KiB
C++
134 lines
4.3 KiB
C++
//===- SourceManagerInternals.h - SourceManager Internals -------*- 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
|
|
/// Defines implementation details of the clang::SourceManager class.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_CLANG_BASIC_SOURCEMANAGERINTERNALS_H
|
|
#define LLVM_CLANG_BASIC_SOURCEMANAGERINTERNALS_H
|
|
|
|
#include "clang/Basic/SourceLocation.h"
|
|
#include "clang/Basic/SourceManager.h"
|
|
#include "llvm/ADT/StringMap.h"
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/Support/Allocator.h"
|
|
#include <cassert>
|
|
#include <map>
|
|
#include <vector>
|
|
|
|
namespace clang {
|
|
|
|
//===----------------------------------------------------------------------===//
|
|
// Line Table Implementation
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
struct LineEntry {
|
|
/// The offset in this file that the line entry occurs at.
|
|
unsigned FileOffset;
|
|
|
|
/// The presumed line number of this line entry: \#line 4.
|
|
unsigned LineNo;
|
|
|
|
/// The ID of the filename identified by this line entry:
|
|
/// \#line 4 "foo.c". This is -1 if not specified.
|
|
int FilenameID;
|
|
|
|
/// Set the 0 if no flags, 1 if a system header,
|
|
SrcMgr::CharacteristicKind FileKind;
|
|
|
|
/// The offset of the virtual include stack location,
|
|
/// which is manipulated by GNU linemarker directives.
|
|
///
|
|
/// If this is 0 then there is no virtual \#includer.
|
|
unsigned IncludeOffset;
|
|
|
|
static LineEntry get(unsigned Offs, unsigned Line, int Filename,
|
|
SrcMgr::CharacteristicKind FileKind,
|
|
unsigned IncludeOffset) {
|
|
LineEntry E;
|
|
E.FileOffset = Offs;
|
|
E.LineNo = Line;
|
|
E.FilenameID = Filename;
|
|
E.FileKind = FileKind;
|
|
E.IncludeOffset = IncludeOffset;
|
|
return E;
|
|
}
|
|
};
|
|
|
|
// needed for FindNearestLineEntry (upper_bound of LineEntry)
|
|
inline bool operator<(const LineEntry &lhs, const LineEntry &rhs) {
|
|
// FIXME: should check the other field?
|
|
return lhs.FileOffset < rhs.FileOffset;
|
|
}
|
|
|
|
inline bool operator<(const LineEntry &E, unsigned Offset) {
|
|
return E.FileOffset < Offset;
|
|
}
|
|
|
|
inline bool operator<(unsigned Offset, const LineEntry &E) {
|
|
return Offset < E.FileOffset;
|
|
}
|
|
|
|
/// Used to hold and unique data used to represent \#line information.
|
|
class LineTableInfo {
|
|
/// Map used to assign unique IDs to filenames in \#line directives.
|
|
///
|
|
/// This allows us to unique the filenames that
|
|
/// frequently reoccur and reference them with indices. FilenameIDs holds
|
|
/// the mapping from string -> ID, and FilenamesByID holds the mapping of ID
|
|
/// to string.
|
|
llvm::StringMap<unsigned, llvm::BumpPtrAllocator> FilenameIDs;
|
|
std::vector<llvm::StringMapEntry<unsigned>*> FilenamesByID;
|
|
|
|
/// Map from FileIDs to a list of line entries (sorted by the offset
|
|
/// at which they occur in the file).
|
|
std::map<FileID, std::vector<LineEntry>> LineEntries;
|
|
|
|
public:
|
|
void clear() {
|
|
FilenameIDs.clear();
|
|
FilenamesByID.clear();
|
|
LineEntries.clear();
|
|
}
|
|
|
|
unsigned getLineTableFilenameID(StringRef Str);
|
|
|
|
StringRef getFilename(unsigned ID) const {
|
|
assert(ID < FilenamesByID.size() && "Invalid FilenameID");
|
|
return FilenamesByID[ID]->getKey();
|
|
}
|
|
|
|
unsigned getNumFilenames() const { return FilenamesByID.size(); }
|
|
|
|
void AddLineNote(FileID FID, unsigned Offset,
|
|
unsigned LineNo, int FilenameID,
|
|
unsigned EntryExit, SrcMgr::CharacteristicKind FileKind);
|
|
|
|
|
|
/// Find the line entry nearest to FID that is before it.
|
|
///
|
|
/// If there is no line entry before \p Offset in \p FID, returns null.
|
|
const LineEntry *FindNearestLineEntry(FileID FID, unsigned Offset);
|
|
|
|
// Low-level access
|
|
using iterator = std::map<FileID, std::vector<LineEntry>>::iterator;
|
|
|
|
iterator begin() { return LineEntries.begin(); }
|
|
iterator end() { return LineEntries.end(); }
|
|
|
|
/// Add a new line entry that has already been encoded into
|
|
/// the internal representation of the line table.
|
|
void AddEntry(FileID FID, const std::vector<LineEntry> &Entries);
|
|
};
|
|
|
|
} // namespace clang
|
|
|
|
#endif // LLVM_CLANG_BASIC_SOURCEMANAGERINTERNALS_H
|