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//===-- MCTargetAsmParser.cpp - Target Assembly Parser --------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/MC/MCParser/MCTargetAsmParser.h"
#include "llvm/MC/MCContext.h"
using namespace llvm;
MCTargetAsmParser::MCTargetAsmParser(MCTargetOptions const &MCOptions,
const MCSubtargetInfo &STI,
const MCInstrInfo &MII)
: MCOptions(MCOptions), STI(&STI), MII(MII) {}
MCTargetAsmParser::~MCTargetAsmParser() = default;
MCSubtargetInfo &MCTargetAsmParser::copySTI() {
MCSubtargetInfo &STICopy = getContext().getSubtargetCopy(getSTI());
STI = &STICopy;
return STICopy;
}
const MCSubtargetInfo &MCTargetAsmParser::getSTI() const {
return *STI;
}
ParseStatus MCTargetAsmParser::parseDirective(AsmToken DirectiveID) {
SMLoc StartTokLoc = getTok().getLoc();
// Delegate to ParseDirective by default for transition period. Once the
// transition is over, this method should just return NoMatch.
bool Res = ParseDirective(DirectiveID);
// Some targets erroneously report success after emitting an error.
if (getParser().hasPendingError())
return ParseStatus::Failure;
// ParseDirective returns true if there was an error or if the directive is
// not target-specific. Disambiguate the two cases by comparing position of
// the lexer before and after calling the method: if no tokens were consumed,
// there was no match, otherwise there was a failure.
if (!Res)
return ParseStatus::Success;
if (getTok().getLoc() != StartTokLoc)
return ParseStatus::Failure;
return ParseStatus::NoMatch;
}
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