1 //===-- llvm/MC/MCAsmParserExtension.h - Asm Parser Hooks -------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #ifndef LLVM_MC_MCASMPARSEREXTENSION_H
11 #define LLVM_MC_MCASMPARSEREXTENSION_H
13 #include "llvm/MC/MCParser/MCAsmParser.h"
14 #include "llvm/ADT/StringRef.h"
15 #include "llvm/Support/SMLoc.h"
20 /// \brief Generic interface for extending the MCAsmParser,
21 /// which is implemented by target and object file assembly parser
23 class MCAsmParserExtension {
24 MCAsmParserExtension(const MCAsmParserExtension &); // DO NOT IMPLEMENT
25 void operator=(const MCAsmParserExtension &); // DO NOT IMPLEMENT
30 MCAsmParserExtension();
32 // Helper template for implementing static dispatch functions.
33 template<typename T, bool (T::*Handler)(StringRef, SMLoc)>
34 static bool HandleDirective(MCAsmParserExtension *Target,
37 T *Obj = static_cast<T*>(Target);
38 return (Obj->*Handler)(Directive, DirectiveLoc);
42 virtual ~MCAsmParserExtension();
44 /// \brief Initialize the extension for parsing using the given \arg
45 /// Parser. The extension should use the AsmParser interfaces to register its
47 virtual void Initialize(MCAsmParser &Parser);
49 /// @name MCAsmParser Proxy Interfaces
52 MCContext &getContext() { return getParser().getContext(); }
53 MCAsmLexer &getLexer() { return getParser().getLexer(); }
54 MCAsmParser &getParser() { return *Parser; }
55 SourceMgr &getSourceManager() { return getParser().getSourceManager(); }
56 MCStreamer &getStreamer() { return getParser().getStreamer(); }
57 void Warning(SMLoc L, const Twine &Msg) {
58 return getParser().Warning(L, Msg);
60 bool Error(SMLoc L, const Twine &Msg) {
61 return getParser().Error(L, Msg);
63 bool TokError(const Twine &Msg) {
64 return getParser().TokError(Msg);
67 const AsmToken &Lex() { return getParser().Lex(); }
69 const AsmToken &getTok() { return getParser().getTok(); }
74 } // End llvm namespace