| //===-- llvm/MC/MCAsmParserExtension.h - Asm Parser Hooks -------*- 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_MCASMPARSEREXTENSION_H |
| #define LLVM_MC_MCASMPARSEREXTENSION_H |
| |
| #include "llvm/MC/MCParser/MCAsmParser.h" |
| #include "llvm/ADT/StringRef.h" |
| #include "llvm/Support/SMLoc.h" |
| |
| namespace llvm { |
| class Twine; |
| |
| /// \brief Generic interface for extending the MCAsmParser, |
| /// which is implemented by target and object file assembly parser |
| /// implementations. |
| class MCAsmParserExtension { |
| MCAsmParserExtension(const MCAsmParserExtension &); // DO NOT IMPLEMENT |
| void operator=(const MCAsmParserExtension &); // DO NOT IMPLEMENT |
| |
| MCAsmParser *Parser; |
| |
| protected: |
| MCAsmParserExtension(); |
| |
| // Helper template for implementing static dispatch functions. |
| template<typename T, bool (T::*Handler)(StringRef, SMLoc)> |
| static bool HandleDirective(MCAsmParserExtension *Target, |
| StringRef Directive, |
| SMLoc DirectiveLoc) { |
| T *Obj = static_cast<T*>(Target); |
| return (Obj->*Handler)(Directive, DirectiveLoc); |
| } |
| |
| bool BracketExpressionsSupported; |
| |
| public: |
| virtual ~MCAsmParserExtension(); |
| |
| /// \brief Initialize the extension for parsing using the given \arg |
| /// Parser. The extension should use the AsmParser interfaces to register its |
| /// parsing routines. |
| virtual void Initialize(MCAsmParser &Parser); |
| |
| /// @name MCAsmParser Proxy Interfaces |
| /// @{ |
| |
| MCContext &getContext() { return getParser().getContext(); } |
| MCAsmLexer &getLexer() { return getParser().getLexer(); } |
| MCAsmParser &getParser() { return *Parser; } |
| SourceMgr &getSourceManager() { return getParser().getSourceManager(); } |
| MCStreamer &getStreamer() { return getParser().getStreamer(); } |
| bool Warning(SMLoc L, const Twine &Msg) { |
| return getParser().Warning(L, Msg); |
| } |
| bool Error(SMLoc L, const Twine &Msg) { |
| return getParser().Error(L, Msg); |
| } |
| bool TokError(const Twine &Msg) { |
| return getParser().TokError(Msg); |
| } |
| |
| const AsmToken &Lex() { return getParser().Lex(); } |
| |
| const AsmToken &getTok() { return getParser().getTok(); } |
| |
| bool HasBracketExpressions() const { return BracketExpressionsSupported; } |
| |
| /// @} |
| }; |
| |
| } // End llvm namespace |
| |
| #endif |