mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-08-21 03:29:40 +00:00
drops a dependency on flex and lets us make future progress more easily. Yay for 2 fewer .cvs files to make silly conflicts with. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44213 91177308-0d34-0410-b5e6-96231b3b80d8
58 lines
1.4 KiB
C++
58 lines
1.4 KiB
C++
//===- LLLexer.h - Lexer for LLVM Assembly Files ----------------*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file was developed by Chris Lattner and is distributed under
|
|
// the University of Illinois Open Source License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class represents the Lexer for .ll files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LIB_ASMPARSER_LLLEXER_H
|
|
#define LIB_ASMPARSER_LLLEXER_H
|
|
|
|
#include <vector>
|
|
#include <string>
|
|
#include <iosfwd>
|
|
|
|
namespace llvm {
|
|
class MemoryBuffer;
|
|
|
|
class LLLexer {
|
|
const char *CurPtr;
|
|
unsigned CurLineNo;
|
|
MemoryBuffer *CurBuf;
|
|
|
|
const char *TokStart;
|
|
|
|
std::string TheError;
|
|
public:
|
|
LLLexer(MemoryBuffer *StartBuf);
|
|
~LLLexer() {}
|
|
|
|
const char *getTokStart() const { return TokStart; }
|
|
unsigned getTokLength() const { return CurPtr-TokStart; }
|
|
unsigned getLineNo() const { return CurLineNo; }
|
|
std::string getFilename() const;
|
|
int LexToken();
|
|
|
|
const std::string getError() const { return TheError; }
|
|
|
|
private:
|
|
int getNextChar();
|
|
void SkipLineComment();
|
|
int LexIdentifier();
|
|
int LexDigitOrNegative();
|
|
int LexPositive();
|
|
int LexAt();
|
|
int LexPercent();
|
|
int LexQuote();
|
|
int Lex0x();
|
|
};
|
|
} // end namespace llvm
|
|
|
|
#endif
|