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//===-- llvm/Target/TargetAsmLexer.h - Target Assembly Lexer ----*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_TARGET_TARGETASMLEXER_H
#define LLVM_TARGET_TARGETASMLEXER_H
#include "llvm/MC/MCParser/MCAsmLexer.h"
namespace llvm {
class Target;
/// TargetAsmLexer - Generic interface to target specific assembly lexers.
class TargetAsmLexer {
/// The current token
AsmToken CurTok;
/// The location and description of the current error
SMLoc ErrLoc;
std::string Err;
TargetAsmLexer(const TargetAsmLexer &); // DO NOT IMPLEMENT
void operator=(const TargetAsmLexer &); // DO NOT IMPLEMENT
protected: // Can only create subclasses.
TargetAsmLexer(const Target &);
virtual AsmToken LexToken() = 0;
void SetError(const SMLoc &errLoc, const std::string &err) {
ErrLoc = errLoc;
Err = err;
}
/// TheTarget - The Target that this machine was created for.
const Target &TheTarget;
MCAsmLexer *Lexer;
public:
virtual ~TargetAsmLexer();
const Target &getTarget() const { return TheTarget; }
/// InstallLexer - Set the lexer to get tokens from lower-level lexer \arg L.
void InstallLexer(MCAsmLexer &L) {
Lexer = &L;
}
MCAsmLexer *getLexer() {
return Lexer;
}
/// Lex - Consume the next token from the input stream and return it.
const AsmToken &Lex() {
return CurTok = LexToken();
}
/// getTok - Get the current (last) lexed token.
const AsmToken &getTok() {
return CurTok;
}
/// getErrLoc - Get the current error location
const SMLoc &getErrLoc() {
return ErrLoc;
}
/// getErr - Get the current error string
const std::string &getErr() {
return Err;
}
/// getKind - Get the kind of current token.
AsmToken::TokenKind getKind() const { return CurTok.getKind(); }
/// is - Check if the current token has kind \arg K.
bool is(AsmToken::TokenKind K) const { return CurTok.is(K); }
/// isNot - Check if the current token has kind \arg K.
bool isNot(AsmToken::TokenKind K) const { return CurTok.isNot(K); }
};
} // End llvm namespace
#endif
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