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to reflect the new license. We understand that people may be surprised that we're moving the header entirely to discuss the new license. We checked this carefully with the Foundation's lawyer and we believe this is the correct approach. Essentially, all code in the project is now made available by the LLVM project under our new license, so you will see that the license headers include that license only. Some of our contributors have contributed code under our old license, and accordingly, we have retained a copy of our old license notice in the top-level files in each project and repository. llvm-svn: 351636
137 lines
3.6 KiB
C++
137 lines
3.6 KiB
C++
//===-- MCAsmParser.cpp - Abstract Asm Parser Interface -------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/MC/MCParser/MCAsmParser.h"
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#include "llvm/ADT/StringRef.h"
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#include "llvm/ADT/Twine.h"
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#include "llvm/Config/llvm-config.h"
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#include "llvm/MC/MCParser/MCAsmLexer.h"
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#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
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#include "llvm/MC/MCParser/MCTargetAsmParser.h"
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#include "llvm/Support/Debug.h"
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#include "llvm/Support/SMLoc.h"
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#include "llvm/Support/raw_ostream.h"
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#include <cassert>
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using namespace llvm;
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MCAsmParser::MCAsmParser() {}
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MCAsmParser::~MCAsmParser() = default;
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void MCAsmParser::setTargetParser(MCTargetAsmParser &P) {
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assert(!TargetParser && "Target parser is already initialized!");
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TargetParser = &P;
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TargetParser->Initialize(*this);
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}
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const AsmToken &MCAsmParser::getTok() const {
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return getLexer().getTok();
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}
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bool MCAsmParser::parseTokenLoc(SMLoc &Loc) {
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Loc = getTok().getLoc();
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return false;
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}
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bool MCAsmParser::parseEOL(const Twine &Msg) {
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if (getTok().getKind() != AsmToken::EndOfStatement)
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return Error(getTok().getLoc(), Msg);
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Lex();
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return false;
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}
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bool MCAsmParser::parseToken(AsmToken::TokenKind T, const Twine &Msg) {
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if (T == AsmToken::EndOfStatement)
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return parseEOL(Msg);
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if (getTok().getKind() != T)
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return Error(getTok().getLoc(), Msg);
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Lex();
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return false;
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}
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bool MCAsmParser::parseIntToken(int64_t &V, const Twine &Msg) {
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if (getTok().getKind() != AsmToken::Integer)
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return TokError(Msg);
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V = getTok().getIntVal();
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Lex();
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return false;
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}
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bool MCAsmParser::parseOptionalToken(AsmToken::TokenKind T) {
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bool Present = (getTok().getKind() == T);
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if (Present)
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parseToken(T);
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return Present;
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}
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bool MCAsmParser::check(bool P, const Twine &Msg) {
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return check(P, getTok().getLoc(), Msg);
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}
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bool MCAsmParser::check(bool P, SMLoc Loc, const Twine &Msg) {
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if (P)
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return Error(Loc, Msg);
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return false;
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}
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bool MCAsmParser::TokError(const Twine &Msg, SMRange Range) {
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return Error(getLexer().getLoc(), Msg, Range);
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}
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bool MCAsmParser::Error(SMLoc L, const Twine &Msg, SMRange Range) {
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MCPendingError PErr;
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PErr.Loc = L;
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Msg.toVector(PErr.Msg);
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PErr.Range = Range;
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PendingErrors.push_back(PErr);
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// If we threw this parsing error after a lexing error, this should
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// supercede the lexing error and so we remove it from the Lexer
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// before it can propagate
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if (getTok().is(AsmToken::Error))
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getLexer().Lex();
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return true;
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}
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bool MCAsmParser::addErrorSuffix(const Twine &Suffix) {
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// Make sure lexing errors have propagated to the parser.
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if (getTok().is(AsmToken::Error))
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Lex();
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for (auto &PErr : PendingErrors)
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Suffix.toVector(PErr.Msg);
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return true;
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}
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bool MCAsmParser::parseMany(function_ref<bool()> parseOne, bool hasComma) {
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if (parseOptionalToken(AsmToken::EndOfStatement))
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return false;
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while (true) {
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if (parseOne())
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return true;
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if (parseOptionalToken(AsmToken::EndOfStatement))
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return false;
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if (hasComma && parseToken(AsmToken::Comma))
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return true;
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}
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return false;
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}
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bool MCAsmParser::parseExpression(const MCExpr *&Res) {
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SMLoc L;
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return parseExpression(Res, L);
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}
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void MCParsedAsmOperand::dump() const {
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// Cannot completely remove virtual function even in release mode.
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#if !defined(NDEBUG) || defined(LLVM_ENABLE_DUMP)
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dbgs() << " " << *this;
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#endif
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}
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