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
11 #define __STDC_LIMIT_MACROS
12 #include "llvm/BasicBlock.h"
13 #include "llvm/Constants.h"
14 #include "llvm/iOther.h"
15 #include "llvm/Function.h"
16 #include "llvm/DerivedTypes.h"
17 #include "llvm/Assembly/Parser.h"
18 #include "Support/StringExtras.h"
22 // Global variables exported from the lexer...
23 extern std::FILE *llvmAsmin;
24 extern int llvmAsmlineno;
26 // Globals exported by the parser...
27 extern std::string CurFilename;
28 Module *RunVMAsmParser(const std::string &Filename, FILE *F);
31 // UnEscapeLexed - Run through the specified buffer and change \xx codes to the
32 // appropriate character. If AllowNull is set to false, a \00 value will cause
33 // an exception to be thrown.
35 // If AllowNull is set to true, the return value of the function points to the
36 // last character of the string in memory.
38 char *UnEscapeLexed(char *Buffer, bool AllowNull = false);
41 // ThrowException - Wrapper around the ParseException class that automatically
42 // fills in file line number and column number and options info.
44 // This also helps me because I keep typing 'throw new ParseException' instead
45 // of just 'throw ParseException'... sigh...
47 static inline void ThrowException(const std::string &message,
49 if (LineNo == -1) LineNo = llvmAsmlineno;
50 // TODO: column number in exception
51 throw ParseException(CurFilename, message, LineNo);
54 // ValID - Represents a reference of a definition of some sort. This may either
55 // be a numeric reference or a symbolic (%var) reference. This is just a
56 // discriminated union.
58 // Note that I can't implement this class in a straight forward manner with
59 // constructors and stuff because it goes in a union, and GCC doesn't like
60 // putting classes with ctor's in unions. :(
64 NumberVal, NameVal, ConstSIntVal, ConstUIntVal, ConstFPVal, ConstNullVal
68 int Num; // If it's a numeric reference
69 char *Name; // If it's a named reference. Memory must be free'd.
70 int64_t ConstPool64; // Constant pool reference. This is the value
71 uint64_t UConstPool64;// Unsigned constant pool reference.
72 double ConstPoolFP; // Floating point constant pool reference
75 static ValID create(int Num) {
76 ValID D; D.Type = NumberVal; D.Num = Num; return D;
79 static ValID create(char *Name) {
80 ValID D; D.Type = NameVal; D.Name = Name; return D;
83 static ValID create(int64_t Val) {
84 ValID D; D.Type = ConstSIntVal; D.ConstPool64 = Val; return D;
87 static ValID create(uint64_t Val) {
88 ValID D; D.Type = ConstUIntVal; D.UConstPool64 = Val; return D;
91 static ValID create(double Val) {
92 ValID D; D.Type = ConstFPVal; D.ConstPoolFP = Val; return D;
95 static ValID createNull() {
96 ValID D; D.Type = ConstNullVal; return D;
99 inline void destroy() const {
101 free(Name); // Free this strdup'd memory...
104 inline ValID copy() const {
105 if (Type != NameVal) return *this;
106 ValID Result = *this;
107 Result.Name = strdup(Name);
111 inline std::string getName() const {
113 case NumberVal : return std::string("#") + itostr(Num);
114 case NameVal : return Name;
115 case ConstFPVal : return ftostr(ConstPoolFP);
116 case ConstNullVal : return "null";
118 case ConstSIntVal : return std::string("%") + itostr(ConstPool64);
120 assert(0 && "Unknown value!");
126 bool operator<(const ValID &V) const {
127 if (Type != V.Type) return Type < V.Type;
129 case NumberVal: return Num < V.Num;
130 case NameVal: return strcmp(Name, V.Name) < 0;
131 case ConstSIntVal: return ConstPool64 < V.ConstPool64;
132 case ConstUIntVal: return UConstPool64 < V.UConstPool64;
133 case ConstFPVal: return ConstPoolFP < V.ConstPoolFP;
134 case ConstNullVal: return false;
135 default: assert(0 && "Unknown value type!"); return false;
142 template<class SuperType>
143 class PlaceholderValue : public SuperType {
147 PlaceholderValue(const Type *Ty, const ValID &d) : SuperType(Ty), D(d) {
148 LineNum = llvmAsmlineno;
150 ValID &getDef() { return D; }
151 int getLineNum() const { return LineNum; }
154 struct InstPlaceHolderHelper : public Instruction {
155 InstPlaceHolderHelper(const Type *Ty) : Instruction(Ty, UserOp1, "") {}
157 virtual Instruction *clone() const { abort(); return 0; }
158 virtual const char *getOpcodeName() const { return "placeholder"; }
161 struct BBPlaceHolderHelper : public BasicBlock {
162 BBPlaceHolderHelper(const Type *Ty) : BasicBlock() {
163 assert(Ty == Type::LabelTy);
167 struct MethPlaceHolderHelper : public Function {
168 MethPlaceHolderHelper(const Type *Ty)
169 : Function(cast<FunctionType>(Ty), true) {}
172 typedef PlaceholderValue<InstPlaceHolderHelper> ValuePlaceHolder;
173 typedef PlaceholderValue<BBPlaceHolderHelper> BBPlaceHolder;
175 static inline ValID &getValIDFromPlaceHolder(const Value *Val) {
176 const Type *Ty = Val->getType();
177 if (isa<PointerType>(Ty) &&
178 isa<FunctionType>(cast<PointerType>(Ty)->getElementType()))
179 Ty = cast<PointerType>(Ty)->getElementType();
181 switch (Ty->getPrimitiveID()) {
182 case Type::LabelTyID: return ((BBPlaceHolder*)Val)->getDef();
183 default: return ((ValuePlaceHolder*)Val)->getDef();
187 static inline int getLineNumFromPlaceHolder(const Value *Val) {
188 const Type *Ty = Val->getType();
189 if (isa<PointerType>(Ty) &&
190 isa<FunctionType>(cast<PointerType>(Ty)->getElementType()))
191 Ty = cast<PointerType>(Ty)->getElementType();
193 switch (Ty->getPrimitiveID()) {
194 case Type::LabelTyID: return ((BBPlaceHolder*)Val)->getLineNum();
195 default: return ((ValuePlaceHolder*)Val)->getLineNum();