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//===-- 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_MCPARSER_MCASMPARSEREXTENSION_H
#define LLVM_MC_MCPARSER_MCASMPARSEREXTENSION_H
#include "llvm/ADT/StringRef.h"
#include "llvm/MC/MCParser/MCAsmParser.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 &) = delete;
void operator=(const MCAsmParserExtension &) = delete;
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 \p 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(); }
const MCAsmLexer &getLexer() const {
return const_cast<MCAsmParserExtension *>(this)->getLexer();
}
MCAsmParser &getParser() { return *Parser; }
const MCAsmParser &getParser() const {
return const_cast<MCAsmParserExtension*>(this)->getParser();
}
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
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