mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-11-23 19:23:23 +01:00
105 lines
3.1 KiB
C++
105 lines
3.1 KiB
C++
//===- LLLexer.h - Lexer for LLVM Assembly Files ----------------*- C++ -*-===//
|
|
//
|
|
// 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
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This class represents the Lexer for .ll files.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_ASMPARSER_LLLEXER_H
|
|
#define LLVM_LIB_ASMPARSER_LLLEXER_H
|
|
|
|
#include "LLToken.h"
|
|
#include "llvm/ADT/APFloat.h"
|
|
#include "llvm/ADT/APSInt.h"
|
|
#include "llvm/Support/SMLoc.h"
|
|
#include <string>
|
|
|
|
namespace llvm {
|
|
class Type;
|
|
class SMDiagnostic;
|
|
class SourceMgr;
|
|
class LLVMContext;
|
|
|
|
class LLLexer {
|
|
const char *CurPtr;
|
|
StringRef CurBuf;
|
|
SMDiagnostic &ErrorInfo;
|
|
SourceMgr &SM;
|
|
LLVMContext &Context;
|
|
|
|
// Information about the current token.
|
|
const char *TokStart;
|
|
lltok::Kind CurKind;
|
|
std::string StrVal;
|
|
unsigned UIntVal;
|
|
Type *TyVal;
|
|
APFloat APFloatVal;
|
|
APSInt APSIntVal;
|
|
|
|
// When false (default), an identifier ending in ':' is a label token.
|
|
// When true, the ':' is treated as a separate token.
|
|
bool IgnoreColonInIdentifiers;
|
|
|
|
public:
|
|
explicit LLLexer(StringRef StartBuf, SourceMgr &SM, SMDiagnostic &,
|
|
LLVMContext &C);
|
|
|
|
lltok::Kind Lex() {
|
|
return CurKind = LexToken();
|
|
}
|
|
|
|
typedef SMLoc LocTy;
|
|
LocTy getLoc() const { return SMLoc::getFromPointer(TokStart); }
|
|
lltok::Kind getKind() const { return CurKind; }
|
|
const std::string &getStrVal() const { return StrVal; }
|
|
Type *getTyVal() const { return TyVal; }
|
|
unsigned getUIntVal() const { return UIntVal; }
|
|
const APSInt &getAPSIntVal() const { return APSIntVal; }
|
|
const APFloat &getAPFloatVal() const { return APFloatVal; }
|
|
|
|
void setIgnoreColonInIdentifiers(bool val) {
|
|
IgnoreColonInIdentifiers = val;
|
|
}
|
|
|
|
bool Error(LocTy ErrorLoc, const Twine &Msg) const;
|
|
bool Error(const Twine &Msg) const { return Error(getLoc(), Msg); }
|
|
|
|
void Warning(LocTy WarningLoc, const Twine &Msg) const;
|
|
void Warning(const Twine &Msg) const { return Warning(getLoc(), Msg); }
|
|
|
|
private:
|
|
lltok::Kind LexToken();
|
|
|
|
int getNextChar();
|
|
void SkipLineComment();
|
|
lltok::Kind ReadString(lltok::Kind kind);
|
|
bool ReadVarName();
|
|
|
|
lltok::Kind LexIdentifier();
|
|
lltok::Kind LexDigitOrNegative();
|
|
lltok::Kind LexPositive();
|
|
lltok::Kind LexAt();
|
|
lltok::Kind LexDollar();
|
|
lltok::Kind LexExclaim();
|
|
lltok::Kind LexPercent();
|
|
lltok::Kind LexUIntID(lltok::Kind Token);
|
|
lltok::Kind LexVar(lltok::Kind Var, lltok::Kind VarID);
|
|
lltok::Kind LexQuote();
|
|
lltok::Kind Lex0x();
|
|
lltok::Kind LexHash();
|
|
lltok::Kind LexCaret();
|
|
|
|
uint64_t atoull(const char *Buffer, const char *End);
|
|
uint64_t HexIntToVal(const char *Buffer, const char *End);
|
|
void HexToIntPair(const char *Buffer, const char *End, uint64_t Pair[2]);
|
|
void FP80HexToIntPair(const char *Buffer, const char *End, uint64_t Pair[2]);
|
|
};
|
|
} // end namespace llvm
|
|
|
|
#endif
|