77 lines
2.1 KiB
C++
77 lines
2.1 KiB
C++
//===- AsmLexer.h - Lexer for Assembly Files --------------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class declares the lexer for assembly files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_MC_MCPARSER_ASMLEXER_H
|
|
#define LLVM_MC_MCPARSER_ASMLEXER_H
|
|
|
|
#include "llvm/ADT/StringRef.h"
|
|
#include "llvm/MC/MCParser/MCAsmLexer.h"
|
|
#include <string>
|
|
|
|
namespace llvm {
|
|
|
|
class MCAsmInfo;
|
|
|
|
/// AsmLexer - Lexer class for assembly files.
|
|
class AsmLexer : public MCAsmLexer {
|
|
const MCAsmInfo &MAI;
|
|
|
|
const char *CurPtr = nullptr;
|
|
StringRef CurBuf;
|
|
bool IsAtStartOfLine = true;
|
|
bool IsAtStartOfStatement = true;
|
|
bool IsPeeking = false;
|
|
bool EndStatementAtEOF = true;
|
|
|
|
protected:
|
|
/// LexToken - Read the next token and return its code.
|
|
AsmToken LexToken() override;
|
|
|
|
public:
|
|
AsmLexer(const MCAsmInfo &MAI);
|
|
AsmLexer(const AsmLexer &) = delete;
|
|
AsmLexer &operator=(const AsmLexer &) = delete;
|
|
~AsmLexer() override;
|
|
|
|
void setBuffer(StringRef Buf, const char *ptr = nullptr,
|
|
bool EndStatementAtEOF = true);
|
|
|
|
StringRef LexUntilEndOfStatement() override;
|
|
|
|
size_t peekTokens(MutableArrayRef<AsmToken> Buf,
|
|
bool ShouldSkipSpace = true) override;
|
|
|
|
const MCAsmInfo &getMAI() const { return MAI; }
|
|
|
|
private:
|
|
bool isAtStartOfComment(const char *Ptr);
|
|
bool isAtStatementSeparator(const char *Ptr);
|
|
int getNextChar();
|
|
int peekNextChar();
|
|
AsmToken ReturnError(const char *Loc, const std::string &Msg);
|
|
|
|
AsmToken LexIdentifier();
|
|
AsmToken LexSlash();
|
|
AsmToken LexLineComment();
|
|
AsmToken LexDigit();
|
|
AsmToken LexSingleQuote();
|
|
AsmToken LexQuote();
|
|
AsmToken LexFloatLiteral();
|
|
AsmToken LexHexFloatLiteral(bool NoIntDigits);
|
|
|
|
StringRef LexUntilEndOfLine();
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif // LLVM_MC_MCPARSER_ASMLEXER_H
|