1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
|
//===- 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
|
