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Diffstat (limited to 'include/llvm/MC/MCTargetAsmLexer.h')
-rw-r--r-- | include/llvm/MC/MCTargetAsmLexer.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/include/llvm/MC/MCTargetAsmLexer.h b/include/llvm/MC/MCTargetAsmLexer.h new file mode 100644 index 0000000000..acb3d4d614 --- /dev/null +++ b/include/llvm/MC/MCTargetAsmLexer.h @@ -0,0 +1,89 @@ +//===-- llvm/MC/MCTargetAsmLexer.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_MC_MCTARGETASMLEXER_H +#define LLVM_MC_MCTARGETASMLEXER_H + +#include "llvm/MC/MCParser/MCAsmLexer.h" + +namespace llvm { +class Target; + +/// MCTargetAsmLexer - Generic interface to target specific assembly lexers. +class MCTargetAsmLexer { + /// The current token + AsmToken CurTok; + + /// The location and description of the current error + SMLoc ErrLoc; + std::string Err; + + MCTargetAsmLexer(const MCTargetAsmLexer &); // DO NOT IMPLEMENT + void operator=(const MCTargetAsmLexer &); // DO NOT IMPLEMENT +protected: // Can only create subclasses. + MCTargetAsmLexer(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 ~MCTargetAsmLexer(); + + 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 |