1 //===-- ParserInternals.h - Definitions internal to the parser ---*- C++ -*--=//
3 // This header file defines the various variables that are shared among the
4 // different components of the parser...
6 //===----------------------------------------------------------------------===//
8 #ifndef PARSER_INTERNALS_H
9 #define PARSER_INTERNALS_H
12 #define __STDC_LIMIT_MACROS
14 #include "llvm/InstrTypes.h"
15 #include "llvm/BasicBlock.h"
16 #include "llvm/ConstantVals.h"
17 #include "llvm/iOther.h"
18 #include "llvm/Method.h"
19 #include "llvm/DerivedTypes.h"
20 #include "llvm/Assembly/Parser.h"
21 #include "Support/StringExtras.h"
25 // Global variables exported from the lexer...
26 extern std::FILE *llvmAsmin;
27 extern int llvmAsmlineno;
29 // Globals exported by the parser...
30 extern std::string CurFilename;
31 Module *RunVMAsmParser(const std::string &Filename, FILE *F);
34 // UnEscapeLexed - Run through the specified buffer and change \xx codes to the
35 // appropriate character. If AllowNull is set to false, a \00 value will cause
36 // an exception to be thrown.
38 // If AllowNull is set to true, the return value of the function points to the
39 // last character of the string in memory.
41 char *UnEscapeLexed(char *Buffer, bool AllowNull = false);
44 // ThrowException - Wrapper around the ParseException class that automatically
45 // fills in file line number and column number and options info.
47 // This also helps me because I keep typing 'throw new ParseException' instead
48 // of just 'throw ParseException'... sigh...
50 static inline void ThrowException(const std::string &message,
52 if (LineNo == -1) LineNo = llvmAsmlineno;
53 // TODO: column number in exception
54 throw ParseException(CurFilename, message, LineNo);
57 // ValID - Represents a reference of a definition of some sort. This may either
58 // be a numeric reference or a symbolic (%var) reference. This is just a
59 // discriminated union.
61 // Note that I can't implement this class in a straight forward manner with
62 // constructors and stuff because it goes in a union, and GCC doesn't like
63 // putting classes with ctor's in unions. :(
67 NumberVal, NameVal, ConstSIntVal, ConstUIntVal, ConstStringVal,
68 ConstFPVal, ConstNullVal
72 int Num; // If it's a numeric reference
73 char *Name; // If it's a named reference. Memory must be free'd.
74 int64_t ConstPool64; // Constant pool reference. This is the value
75 uint64_t UConstPool64;// Unsigned constant pool reference.
76 double ConstPoolFP; // Floating point constant pool reference
79 static ValID create(int Num) {
80 ValID D; D.Type = NumberVal; D.Num = Num; return D;
83 static ValID create(char *Name) {
84 ValID D; D.Type = NameVal; D.Name = Name; return D;
87 static ValID create(int64_t Val) {
88 ValID D; D.Type = ConstSIntVal; D.ConstPool64 = Val; return D;
91 static ValID create(uint64_t Val) {
92 ValID D; D.Type = ConstUIntVal; D.UConstPool64 = Val; return D;
95 static ValID create_conststr(char *Name) {
96 ValID D; D.Type = ConstStringVal; D.Name = Name; return D;
99 static ValID create(double Val) {
100 ValID D; D.Type = ConstFPVal; D.ConstPoolFP = Val; return D;
103 static ValID createNull() {
104 ValID D; D.Type = ConstNullVal; return D;
107 inline void destroy() const {
108 if (Type == NameVal || Type == ConstStringVal)
109 free(Name); // Free this strdup'd memory...
112 inline ValID copy() const {
113 if (Type != NameVal && Type != ConstStringVal) return *this;
114 ValID Result = *this;
115 Result.Name = strdup(Name);
119 inline std::string getName() const {
121 case NumberVal : return std::string("#") + itostr(Num);
122 case NameVal : return Name;
123 case ConstStringVal: return std::string("\"") + Name + std::string("\"");
124 case ConstFPVal : return ftostr(ConstPoolFP);
125 case ConstNullVal : return "null";
127 case ConstSIntVal : return std::string("%") + itostr(ConstPool64);
129 assert(0 && "Unknown value!");
135 bool operator<(const ValID &V) const {
136 if (Type != V.Type) return Type < V.Type;
138 case NumberVal: return Num < V.Num;
140 case NameVal: return strcmp(Name, V.Name) < 0;
141 case ConstSIntVal: return ConstPool64 < V.ConstPool64;
142 case ConstUIntVal: return UConstPool64 < V.UConstPool64;
143 case ConstFPVal: return ConstPoolFP < V.ConstPoolFP;
144 case ConstNullVal: return false;
145 default: assert(0 && "Unknown value type!"); return false;
152 template<class SuperType>
153 class PlaceholderValue : public SuperType {
157 PlaceholderValue(const Type *Ty, const ValID &d) : SuperType(Ty), D(d) {
158 LineNum = llvmAsmlineno;
160 ValID &getDef() { return D; }
161 int getLineNum() const { return LineNum; }
164 struct InstPlaceHolderHelper : public Instruction {
165 InstPlaceHolderHelper(const Type *Ty) : Instruction(Ty, UserOp1, "") {}
167 virtual Instruction *clone() const { abort(); return 0; }
168 virtual const char *getOpcodeName() const { return "placeholder"; }
171 struct BBPlaceHolderHelper : public BasicBlock {
172 BBPlaceHolderHelper(const Type *Ty) : BasicBlock() {
173 assert(Ty->isLabelType());
177 struct MethPlaceHolderHelper : public Method {
178 MethPlaceHolderHelper(const Type *Ty) : Method(cast<const MethodType>(Ty),
182 typedef PlaceholderValue<InstPlaceHolderHelper> ValuePlaceHolder;
183 typedef PlaceholderValue<BBPlaceHolderHelper> BBPlaceHolder;
185 static inline ValID &getValIDFromPlaceHolder(const Value *Val) {
186 const Type *Ty = Val->getType();
187 if (isa<PointerType>(Ty) &&
188 isa<MethodType>(cast<PointerType>(Ty)->getElementType()))
189 Ty = cast<PointerType>(Ty)->getElementType();
191 switch (Ty->getPrimitiveID()) {
192 case Type::LabelTyID: return ((BBPlaceHolder*)Val)->getDef();
193 default: return ((ValuePlaceHolder*)Val)->getDef();
197 static inline int getLineNumFromPlaceHolder(const Value *Val) {
198 const Type *Ty = Val->getType();
199 if (isa<PointerType>(Ty) &&
200 isa<MethodType>(cast<PointerType>(Ty)->getElementType()))
201 Ty = cast<PointerType>(Ty)->getElementType();
203 switch (Ty->getPrimitiveID()) {
204 case Type::LabelTyID: return ((BBPlaceHolder*)Val)->getLineNum();
205 default: return ((ValuePlaceHolder*)Val)->getLineNum();