-//===-- ParserInternals.h - Definitions internal to the parser ---*- C++ -*--=//
+//===-- ParserInternals.h - Definitions internal to the parser --*- C++ -*-===//
//
-// This header file defines the various variables that are shared among the
+// The LLVM Compiler Infrastructure
+//
+// This file was developed by the LLVM research group and is distributed under
+// the University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This header file defines the various variables that are shared among the
// different components of the parser...
//
//===----------------------------------------------------------------------===//
#define PARSER_INTERNALS_H
#include "llvm/Constants.h"
-#include "llvm/iOther.h"
-#include "llvm/Function.h"
#include "llvm/DerivedTypes.h"
+#include "llvm/Function.h"
+#include "llvm/Instructions.h"
#include "llvm/Assembly/Parser.h"
-#include "Support/StringExtras.h"
+#include "llvm/ADT/StringExtras.h"
-class Module;
// Global variables exported from the lexer...
-extern std::FILE *llvmAsmin;
+
extern int llvmAsmlineno;
+extern std::string &llvmAsmTextin;
+
+// functions exported from the lexer
+void set_scan_file(FILE * F);
+void set_scan_string (const char * str);
+
+// Globals exported by the parser...
+extern char* llvmAsmtext;
+extern int llvmAsmleng;
+
+namespace llvm {
+
// Globals exported by the parser...
extern std::string CurFilename;
+
+class Module;
Module *RunVMAsmParser(const std::string &Filename, FILE *F);
-extern char* llvmAsmtext;
-extern int llvmAsmleng;
+// Parse a string directly
+Module *RunVMAsmParser(const char * AsmString, Module * M);
+
// UnEscapeLexed - Run through the specified buffer and change \xx codes to the
// appropriate character. If AllowNull is set to false, a \00 value will cause
// ThrowException - Wrapper around the ParseException class that automatically
// fills in file line number and column number and options info.
//
-// This also helps me because I keep typing 'throw new ParseException' instead
+// This also helps me because I keep typing 'throw new ParseException' instead
// of just 'throw ParseException'... sigh...
//
static inline void ThrowException(const std::string &message,
- int LineNo = -1) {
+ int LineNo = -1) {
if (LineNo == -1) LineNo = llvmAsmlineno;
// TODO: column number in exception
throw ParseException(CurFilename, message, LineNo);
}
+/// InlineAsmDescriptor - This is a simple class that holds info about inline
+/// asm blocks, for use by ValID.
+struct InlineAsmDescriptor {
+ std::string AsmString, Constraints;
+ bool HasSideEffects;
+
+ InlineAsmDescriptor(const std::string &as, const std::string &c, bool HSE)
+ : AsmString(as), Constraints(c), HasSideEffects(HSE) {}
+};
+
+
// ValID - Represents a reference of a definition of some sort. This may either
-// be a numeric reference or a symbolic (%var) reference. This is just a
+// be a numeric reference or a symbolic (%var) reference. This is just a
// discriminated union.
//
-// Note that I can't implement this class in a straight forward manner with
-// constructors and stuff because it goes in a union, and GCC doesn't like
-// putting classes with ctor's in unions. :(
+// Note that I can't implement this class in a straight forward manner with
+// constructors and stuff because it goes in a union.
//
struct ValID {
enum {
NumberVal, NameVal, ConstSIntVal, ConstUIntVal, ConstFPVal, ConstNullVal,
- ConstantVal,
+ ConstUndefVal, ConstZeroVal, ConstantVal, InlineAsmVal
} Type;
union {
uint64_t UConstPool64;// Unsigned constant pool reference.
double ConstPoolFP; // Floating point constant pool reference
Constant *ConstantValue; // Fully resolved constant for ConstantVal case.
+ InlineAsmDescriptor *IAD;
};
static ValID create(int Num) {
ValID D; D.Type = ConstNullVal; return D;
}
+ static ValID createUndef() {
+ ValID D; D.Type = ConstUndefVal; return D;
+ }
+
+ static ValID createZeroInit() {
+ ValID D; D.Type = ConstZeroVal; return D;
+ }
+
static ValID create(Constant *Val) {
ValID D; D.Type = ConstantVal; D.ConstantValue = Val; return D;
}
+
+ static ValID createInlineAsm(const std::string &AsmString,
+ const std::string &Constraints,
+ bool HasSideEffects) {
+ ValID D;
+ D.Type = InlineAsmVal;
+ D.IAD = new InlineAsmDescriptor(AsmString, Constraints, HasSideEffects);
+ return D;
+ }
inline void destroy() const {
if (Type == NameVal)
- free(Name); // Free this strdup'd memory...
+ free(Name); // Free this strdup'd memory.
+ else if (Type == InlineAsmVal)
+ delete IAD;
}
inline ValID copy() const {
case NameVal : return Name;
case ConstFPVal : return ftostr(ConstPoolFP);
case ConstNullVal : return "null";
+ case ConstUndefVal : return "undef";
+ case ConstZeroVal : return "zeroinitializer";
case ConstUIntVal :
case ConstSIntVal : return std::string("%") + itostr(ConstPool64);
case ConstantVal:
case ConstUIntVal: return UConstPool64 < V.UConstPool64;
case ConstFPVal: return ConstPoolFP < V.ConstPoolFP;
case ConstNullVal: return false;
+ case ConstUndefVal: return false;
+ case ConstZeroVal: return false;
case ConstantVal: return ConstantValue < V.ConstantValue;
default: assert(0 && "Unknown value type!"); return false;
}
}
};
-
-
-template<class SuperType>
-class PlaceholderValue : public SuperType {
- ValID D;
- int LineNum;
-public:
- PlaceholderValue(const Type *Ty, const ValID &d) : SuperType(Ty), D(d) {
- LineNum = llvmAsmlineno;
- }
- ValID &getDef() { return D; }
- int getLineNum() const { return LineNum; }
-};
-
-struct InstPlaceHolderHelper : public Instruction {
- InstPlaceHolderHelper(const Type *Ty) : Instruction(Ty, UserOp1, "") {}
-
- virtual Instruction *clone() const { abort(); return 0; }
- virtual const char *getOpcodeName() const { return "placeholder"; }
-};
-
-struct BBPlaceHolderHelper : public BasicBlock {
- BBPlaceHolderHelper(const Type *Ty) : BasicBlock() {
- assert(Ty == Type::LabelTy);
- }
-};
-
-struct MethPlaceHolderHelper : public Function {
- MethPlaceHolderHelper(const Type *Ty)
- : Function(cast<FunctionType>(Ty), true) {}
-};
-
-typedef PlaceholderValue<InstPlaceHolderHelper> ValuePlaceHolder;
-typedef PlaceholderValue<BBPlaceHolderHelper> BBPlaceHolder;
-
-static inline ValID &getValIDFromPlaceHolder(const Value *Val) {
- const Type *Ty = Val->getType();
- if (isa<PointerType>(Ty) &&
- isa<FunctionType>(cast<PointerType>(Ty)->getElementType()))
- Ty = cast<PointerType>(Ty)->getElementType();
-
- switch (Ty->getPrimitiveID()) {
- case Type::LabelTyID: return ((BBPlaceHolder*)Val)->getDef();
- default: return ((ValuePlaceHolder*)Val)->getDef();
- }
-}
-
-static inline int getLineNumFromPlaceHolder(const Value *Val) {
- const Type *Ty = Val->getType();
- if (isa<PointerType>(Ty) &&
- isa<FunctionType>(cast<PointerType>(Ty)->getElementType()))
- Ty = cast<PointerType>(Ty)->getElementType();
-
- switch (Ty->getPrimitiveID()) {
- case Type::LabelTyID: return ((BBPlaceHolder*)Val)->getLineNum();
- default: return ((ValuePlaceHolder*)Val)->getLineNum();
- }
-}
+} // End llvm namespace
#endif
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