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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
105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
//===- LLLexer.h - Lexer for LLVM Assembly Files ----------------*- C++ -*-===//
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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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//
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// This class represents the Lexer for .ll files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_LIB_ASMPARSER_LLLEXER_H
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#define LLVM_LIB_ASMPARSER_LLLEXER_H
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#include "LLToken.h"
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#include "llvm/ADT/APFloat.h"
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#include "llvm/ADT/APSInt.h"
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#include "llvm/Support/SourceMgr.h"
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#include <string>
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namespace llvm {
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class MemoryBuffer;
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class Type;
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class SMDiagnostic;
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class LLVMContext;
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class LLLexer {
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const char *CurPtr;
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StringRef CurBuf;
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SMDiagnostic &ErrorInfo;
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SourceMgr &SM;
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LLVMContext &Context;
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// Information about the current token.
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const char *TokStart;
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lltok::Kind CurKind;
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std::string StrVal;
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unsigned UIntVal;
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Type *TyVal;
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APFloat APFloatVal;
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APSInt APSIntVal;
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// When false (default), an identifier ending in ':' is a label token.
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// When true, the ':' is treated as a separate token.
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bool IgnoreColonInIdentifiers;
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public:
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explicit LLLexer(StringRef StartBuf, SourceMgr &SM, SMDiagnostic &,
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LLVMContext &C);
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lltok::Kind Lex() {
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return CurKind = LexToken();
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}
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typedef SMLoc LocTy;
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LocTy getLoc() const { return SMLoc::getFromPointer(TokStart); }
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lltok::Kind getKind() const { return CurKind; }
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const std::string &getStrVal() const { return StrVal; }
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Type *getTyVal() const { return TyVal; }
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unsigned getUIntVal() const { return UIntVal; }
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const APSInt &getAPSIntVal() const { return APSIntVal; }
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const APFloat &getAPFloatVal() const { return APFloatVal; }
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void setIgnoreColonInIdentifiers(bool val) {
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IgnoreColonInIdentifiers = val;
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}
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bool Error(LocTy ErrorLoc, const Twine &Msg) const;
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bool Error(const Twine &Msg) const { return Error(getLoc(), Msg); }
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void Warning(LocTy WarningLoc, const Twine &Msg) const;
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void Warning(const Twine &Msg) const { return Warning(getLoc(), Msg); }
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private:
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lltok::Kind LexToken();
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int getNextChar();
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void SkipLineComment();
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lltok::Kind ReadString(lltok::Kind kind);
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bool ReadVarName();
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lltok::Kind LexIdentifier();
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lltok::Kind LexDigitOrNegative();
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lltok::Kind LexPositive();
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lltok::Kind LexAt();
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lltok::Kind LexDollar();
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lltok::Kind LexExclaim();
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lltok::Kind LexPercent();
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lltok::Kind LexUIntID(lltok::Kind Token);
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lltok::Kind LexVar(lltok::Kind Var, lltok::Kind VarID);
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lltok::Kind LexQuote();
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lltok::Kind Lex0x();
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lltok::Kind LexHash();
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lltok::Kind LexCaret();
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uint64_t atoull(const char *Buffer, const char *End);
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uint64_t HexIntToVal(const char *Buffer, const char *End);
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void HexToIntPair(const char *Buffer, const char *End, uint64_t Pair[2]);
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void FP80HexToIntPair(const char *Buffer, const char *End, uint64_t Pair[2]);
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};
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} // end namespace llvm
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#endif
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