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41b1d4288a
isAtStartOfComment and using that instead in two places where a loop to check if the char was in MAI.getCommentString(). llvm-svn: 82059
80 lines
1.9 KiB
C++
80 lines
1.9 KiB
C++
//===- AsmLexer.h - Lexer for Assembly Files --------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class declares the lexer for assembly files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef ASMLEXER_H
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#define ASMLEXER_H
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#include "llvm/ADT/StringRef.h"
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#include "llvm/MC/MCAsmLexer.h"
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#include "llvm/MC/MCAsmInfo.h"
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#include "llvm/Support/DataTypes.h"
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#include <string>
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#include <cassert>
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namespace llvm {
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class MemoryBuffer;
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class SourceMgr;
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class SMLoc;
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class MCAsmInfo;
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/// AsmLexer - Lexer class for assembly files.
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class AsmLexer : public MCAsmLexer {
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SourceMgr &SrcMgr;
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const MCAsmInfo MAI;
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const char *CurPtr;
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const MemoryBuffer *CurBuf;
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const char *TokStart;
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/// This is the current buffer index we're lexing from as managed by the
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/// SourceMgr object.
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int CurBuffer;
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void operator=(const AsmLexer&); // DO NOT IMPLEMENT
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AsmLexer(const AsmLexer&); // DO NOT IMPLEMENT
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protected:
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/// LexToken - Read the next token and return its code.
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virtual AsmToken LexToken();
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public:
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AsmLexer(SourceMgr &SrcMgr, const MCAsmInfo &MAI);
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~AsmLexer();
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SMLoc getLoc() const;
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StringRef LexUntilEndOfStatement();
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bool isAtStartOfComment(char Char);
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/// EnterIncludeFile - Enter the specified file. This returns true on failure.
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bool EnterIncludeFile(const std::string &Filename);
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void PrintMessage(SMLoc Loc, const std::string &Msg, const char *Type) const;
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private:
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int getNextChar();
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AsmToken ReturnError(const char *Loc, const std::string &Msg);
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AsmToken LexIdentifier();
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AsmToken LexSlash();
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AsmToken LexLineComment();
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AsmToken LexDigit();
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AsmToken LexQuote();
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};
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} // end namespace llvm
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#endif
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