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//===- AsmLexer.h - Lexer for Assembly Files --------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This class declares the lexer for assembly files.
//
//===----------------------------------------------------------------------===//
#ifndef ASMLEXER_H
#define ASMLEXER_H
#include "llvm/ADT/StringRef.h"
#include "llvm/MC/MCAsmLexer.h"
#include "llvm/Support/DataTypes.h"
#include <string>
#include <cassert>
namespace llvm {
class MemoryBuffer;
class SourceMgr;
class SMLoc;
/// AsmLexer - Lexer class for assembly files.
class AsmLexer : public MCAsmLexer {
SourceMgr &SrcMgr;
const char *CurPtr;
const MemoryBuffer *CurBuf;
const char *TokStart;
/// This is the current buffer index we're lexing from as managed by the
/// SourceMgr object.
int CurBuffer;
void operator=(const AsmLexer&); // DO NOT IMPLEMENT
AsmLexer(const AsmLexer&); // DO NOT IMPLEMENT
protected:
/// LexToken - Read the next token and return its code.
virtual AsmToken LexToken();
public:
AsmLexer(SourceMgr &SrcMgr);
~AsmLexer();
SMLoc getLoc() const;
StringRef LexUntilEndOfStatement();
/// EnterIncludeFile - Enter the specified file. This returns true on failure.
bool EnterIncludeFile(const std::string &Filename);
void PrintMessage(SMLoc Loc, const std::string &Msg, const char *Type) const;
private:
int getNextChar();
AsmToken ReturnError(const char *Loc, const std::string &Msg);
AsmToken LexIdentifier();
AsmToken LexPercent();
AsmToken LexSlash();
AsmToken LexLineComment();
AsmToken LexDigit();
AsmToken LexQuote();
};
} // end namespace llvm
#endif
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