1 //===- LLLexer.h - Lexer for LLVM Assembly Files ----------------*- C++ -*-===//
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //===----------------------------------------------------------------------===//
9 // This class represents the Lexer for .ll files.
11 //===----------------------------------------------------------------------===//
13 #ifndef LLVM_LIB_ASMPARSER_LLLEXER_H
14 #define LLVM_LIB_ASMPARSER_LLLEXER_H
17 #include "llvm/ADT/APFloat.h"
18 #include "llvm/ADT/APSInt.h"
19 #include "llvm/Support/SourceMgr.h"
31 SMDiagnostic &ErrorInfo;
35 // Information about the current token.
44 // When false (default), an identifier ending in ':' is a label token.
45 // When true, the ':' is treated as a separate token.
46 bool IgnoreColonInIdentifiers;
49 explicit LLLexer(StringRef StartBuf, SourceMgr &SM, SMDiagnostic &,
53 return CurKind = LexToken();
57 LocTy getLoc() const { return SMLoc::getFromPointer(TokStart); }
58 lltok::Kind getKind() const { return CurKind; }
59 const std::string &getStrVal() const { return StrVal; }
60 Type *getTyVal() const { return TyVal; }
61 unsigned getUIntVal() const { return UIntVal; }
62 const APSInt &getAPSIntVal() const { return APSIntVal; }
63 const APFloat &getAPFloatVal() const { return APFloatVal; }
65 void setIgnoreColonInIdentifiers(bool val) {
66 IgnoreColonInIdentifiers = val;
69 bool Error(LocTy ErrorLoc, const Twine &Msg) const;
70 bool Error(const Twine &Msg) const { return Error(getLoc(), Msg); }
72 void Warning(LocTy WarningLoc, const Twine &Msg) const;
73 void Warning(const Twine &Msg) const { return Warning(getLoc(), Msg); }
76 lltok::Kind LexToken();
79 void SkipLineComment();
80 lltok::Kind ReadString(lltok::Kind kind);
83 lltok::Kind LexIdentifier();
84 lltok::Kind LexDigitOrNegative();
85 lltok::Kind LexPositive();
87 lltok::Kind LexDollar();
88 lltok::Kind LexExclaim();
89 lltok::Kind LexPercent();
90 lltok::Kind LexUIntID(lltok::Kind Token);
91 lltok::Kind LexVar(lltok::Kind Var, lltok::Kind VarID);
92 lltok::Kind LexQuote();
94 lltok::Kind LexHash();
95 lltok::Kind LexCaret();
97 uint64_t atoull(const char *Buffer, const char *End);
98 uint64_t HexIntToVal(const char *Buffer, const char *End);
99 void HexToIntPair(const char *Buffer, const char *End, uint64_t Pair[2]);
100 void FP80HexToIntPair(const char *Buffer, const char *End, uint64_t Pair[2]);
102 } // end namespace llvm