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comparison lib/TableGen/TGLexer.h @ 77:54457678186b LLVM3.6

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LLVM 3.6
author Kaito Tokumori <e105711@ie.u-ryukyu.ac.jp>
date Mon, 08 Sep 2014 22:06:00 +0900
parents 95c75e76d11b
children afa8332a0e37
comparison
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34:e874dbf0ad9d 77:54457678186b
9 // 9 //
10 // This class represents the Lexer for tablegen files. 10 // This class represents the Lexer for tablegen files.
11 // 11 //
12 //===----------------------------------------------------------------------===// 12 //===----------------------------------------------------------------------===//
13 13
14 #ifndef TGLEXER_H 14 #ifndef LLVM_LIB_TABLEGEN_TGLEXER_H
15 #define TGLEXER_H 15 #define LLVM_LIB_TABLEGEN_TGLEXER_H
16 16
17 #include "llvm/ADT/StringRef.h"
17 #include "llvm/Support/DataTypes.h" 18 #include "llvm/Support/DataTypes.h"
18 #include "llvm/Support/SMLoc.h" 19 #include "llvm/Support/SMLoc.h"
19 #include <cassert> 20 #include <cassert>
20 #include <map> 21 #include <map>
21 #include <string> 22 #include <string>
22 23
23 namespace llvm { 24 namespace llvm {
24 class MemoryBuffer;
25 class SourceMgr; 25 class SourceMgr;
26 class SMLoc; 26 class SMLoc;
27 class Twine; 27 class Twine;
28 28
29 namespace tgtok { 29 namespace tgtok {
45 // Keywords. 45 // Keywords.
46 Bit, Bits, Class, Code, Dag, Def, Foreach, Defm, Field, In, Int, Let, List, 46 Bit, Bits, Class, Code, Dag, Def, Foreach, Defm, Field, In, Int, Let, List,
47 MultiClass, String, 47 MultiClass, String,
48 48
49 // !keywords. 49 // !keywords.
50 XConcat, XADD, XSRA, XSRL, XSHL, XStrConcat, XCast, XSubst, 50 XConcat, XADD, XAND, XSRA, XSRL, XSHL, XListConcat, XStrConcat, XCast,
51 XForEach, XHead, XTail, XEmpty, XIf, XEq, 51 XSubst, XForEach, XHead, XTail, XEmpty, XIf, XEq,
52 52
53 // Integer value. 53 // Integer value.
54 IntVal, 54 IntVal,
55
56 // Binary constant. Note that these are sized according to the number of
57 // bits given.
58 BinaryIntVal,
55 59
56 // String valued tokens. 60 // String valued tokens.
57 Id, StrVal, VarName, CodeFragment 61 Id, StrVal, VarName, CodeFragment
58 }; 62 };
59 } 63 }
61 /// TGLexer - TableGen Lexer class. 65 /// TGLexer - TableGen Lexer class.
62 class TGLexer { 66 class TGLexer {
63 SourceMgr &SrcMgr; 67 SourceMgr &SrcMgr;
64 68
65 const char *CurPtr; 69 const char *CurPtr;
66 const MemoryBuffer *CurBuf; 70 StringRef CurBuf;
67 71
68 // Information about the current token. 72 // Information about the current token.
69 const char *TokStart; 73 const char *TokStart;
70 tgtok::TokKind CurCode; 74 tgtok::TokKind CurCode;
71 std::string CurStrVal; // This is valid for ID, STRVAL, VARNAME, CODEFRAGMENT 75 std::string CurStrVal; // This is valid for ID, STRVAL, VARNAME, CODEFRAGMENT
72 int64_t CurIntVal; // This is valid for INTVAL. 76 int64_t CurIntVal; // This is valid for INTVAL.
73 77
74 /// CurBuffer - This is the current buffer index we're lexing from as managed 78 /// CurBuffer - This is the current buffer index we're lexing from as managed
75 /// by the SourceMgr object. 79 /// by the SourceMgr object.
76 int CurBuffer; 80 unsigned CurBuffer;
77 81
78 public: 82 public:
79 typedef std::map<std::string, SMLoc> DependenciesMapTy; 83 typedef std::map<std::string, SMLoc> DependenciesMapTy;
80 private: 84 private:
81 /// Dependencies - This is the list of all included files. 85 /// Dependencies - This is the list of all included files.
103 } 107 }
104 int64_t getCurIntVal() const { 108 int64_t getCurIntVal() const {
105 assert(CurCode == tgtok::IntVal && "This token isn't an integer"); 109 assert(CurCode == tgtok::IntVal && "This token isn't an integer");
106 return CurIntVal; 110 return CurIntVal;
107 } 111 }
112 std::pair<int64_t, unsigned> getCurBinaryIntVal() const {
113 assert(CurCode == tgtok::BinaryIntVal &&
114 "This token isn't a binary integer");
115 return std::make_pair(CurIntVal, (CurPtr - TokStart)-2);
116 }
108 117
109 SMLoc getLoc() const; 118 SMLoc getLoc() const;
110 119
111 private: 120 private:
112 /// LexToken - Read the next token and return its code. 121 /// LexToken - Read the next token and return its code.