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//===- TGSourceMgr.h - Manager for Source Buffers & Diagnostics -*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file declares the TGSourceMgr class.
//
//===----------------------------------------------------------------------===//
#ifndef TGSOURCEMGR_H
#define TGSOURCEMGR_H
#include <vector>
namespace llvm {
class MemoryBuffer;
/// FIXME: Make this a struct that is opaque.
typedef const char *TGLocTy;
/// TGSourceMgr - This owns the files read by tblgen, handles include stacks,
/// and handles printing of diagnostics.
class TGSourceMgr {
struct SrcBuffer {
/// Buffer - The memory buffer for the file.
MemoryBuffer *Buffer;
/// IncludeLoc - This is the location of the parent include, or null if at
/// the top level.
TGLocTy IncludeLoc;
};
/// Buffers - This is all of the buffers that we are reading from.
std::vector<SrcBuffer> Buffers;
TGSourceMgr(const TGSourceMgr&); // DO NOT IMPLEMENT
void operator=(const TGSourceMgr&); // DO NOT IMPLEMENT
public:
TGSourceMgr() {}
~TGSourceMgr();
const SrcBuffer &getBufferInfo(unsigned i) const {
assert(i < Buffers.size() && "Invalid Buffer ID!");
return Buffers[i];
}
const MemoryBuffer *getMemoryBuffer(unsigned i) const {
assert(i < Buffers.size() && "Invalid Buffer ID!");
return Buffers[i].Buffer;
}
TGLocTy getParentIncludeLoc(unsigned i) const {
assert(i < Buffers.size() && "Invalid Buffer ID!");
return Buffers[i].IncludeLoc;
}
unsigned AddNewSourceBuffer(MemoryBuffer *F, TGLocTy IncludeLoc) {
SrcBuffer NB;
NB.Buffer = F;
NB.IncludeLoc = IncludeLoc;
Buffers.push_back(NB);
return Buffers.size()-1;
}
/// FindBufferContainingLoc - Return the ID of the buffer containing the
/// specified location, returning -1 if not found.
int FindBufferContainingLoc(TGLocTy Loc) const;
/// FindLineNumber - Find the line number for the specified location in the
/// specified file. This is not a fast method.
unsigned FindLineNumber(TGLocTy Loc, int BufferID = -1) const;
/// PrintError - Emit an error message about the specified location with the
/// specified string.
void PrintError(TGLocTy ErrorLoc, const std::string &Msg) const;
private:
void PrintIncludeStack(TGLocTy IncludeLoc) const;
};
} // end llvm namespace
#endif
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