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//=== SourceMgrAdapter.h - SourceMgr to SourceManager Adapter ---*- C++ -*-===//
// The LLVM Compiler Infrastructure
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
// This file provides an adapter that maps diagnostics from llvm::SourceMgr
// to Clang's SourceManager.
#include "clang/Basic/SourceManager.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/Support/SourceMgr.h"
#include <string>
#include <utility>
namespace clang {
class DiagnosticsEngine;
class FileEntry;
/// An adapter that can be used to translate diagnostics from one or more
/// llvm::SourceMgr instances to a ,
class SourceMgrAdapter {
/// Clang source manager.
SourceManager &SrcMgr;
/// Clang diagnostics engine.
DiagnosticsEngine &Diag;
/// Diagnostic IDs for errors, warnings, and notes.
unsigned ErrorDiagID, WarningDiagID, NoteDiagID;
/// The default file to use when mapping buffers.
const FileEntry *DefaultFile;
/// A mapping from (LLVM source manager, buffer ID) pairs to the
/// corresponding file ID within the Clang source manager.
llvm::DenseMap<std::pair<const llvm::SourceMgr *, unsigned>, FileID>
/// Diagnostic handler.
static void handleDiag(const llvm::SMDiagnostic &diag, void *context);
/// Create a new \c SourceMgr adaptor that maps to the given source
/// manager and diagnostics engine.
SourceMgrAdapter(SourceManager &srcMgr, DiagnosticsEngine &diag,
unsigned errorDiagID, unsigned warningDiagID,
unsigned noteDiagID, const FileEntry *defaultFile = nullptr);
/// Map a source location in the given LLVM source manager to its
/// corresponding location in the Clang source manager.
SourceLocation mapLocation(const llvm::SourceMgr &llvmSrcMgr,llvm::SMLoc loc);
/// Map a source range in the given LLVM source manager to its corresponding
/// range in the Clang source manager.
SourceRange mapRange(const llvm::SourceMgr &llvmSrcMgr, llvm::SMRange range);
/// Handle the given diagnostic from an LLVM source manager.
void handleDiag(const llvm::SMDiagnostic &diag);
/// Retrieve the diagnostic handler to use with the underlying SourceMgr.
llvm::SourceMgr::DiagHandlerTy getDiagHandler() {
return &SourceMgrAdapter::handleDiag;
/// Retrieve the context to use with the diagnostic handler produced by
/// \c getDiagHandler().
void *getDiagContext() { return this; }
} // end namespace clang