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llvm-svn: 2
diff --git a/llvm/lib/AsmParser/ParserInternals.h b/llvm/lib/AsmParser/ParserInternals.h
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+//===-- ParserInternals.h - Definitions internal to the parser ---*- C++ -*--=//
+//
+// This header file defines the various variables that are shared among the
+// different components of the parser...
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef PARSER_INTERNALS_H
+#define PARSER_INTERNALS_H
+
+#include <stdio.h>
+#define __STDC_LIMIT_MACROS
+
+#include "llvm/InstrTypes.h"
+#include "llvm/BasicBlock.h"
+#include "llvm/ConstPoolVals.h"
+#include "llvm/iOther.h"
+#include "llvm/Method.h"
+#include "llvm/Type.h"
+#include "llvm/Assembly/Parser.h"
+#include "llvm/Tools/CommandLine.h"
+#include "llvm/Tools/StringExtras.h"
+
+class Module;
+
+// Global variables exported from the lexer...
+extern FILE *llvmAsmin;
+extern int llvmAsmlineno;
+
+// Globals exported by the parser...
+extern const ToolCommandLine *CurOptions;
+Module *RunVMAsmParser(const ToolCommandLine &Opts, FILE *F);
+
+
+// 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
+// of just 'throw ParseException'... sigh...
+//
+static inline void ThrowException(const string &message) {
+ // TODO: column number in exception
+ throw ParseException(*CurOptions, message, llvmAsmlineno);
+}
+
+// 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
+// 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. :(
+//
+struct ValID {
+ int Type; // 0 = number, 1 = name, 2 = const pool,
+ // 3 = unsigned const pool, 4 = const string
+ union {
+ int Num; // If it's a numeric reference
+ char *Name; // If it's a named reference. Memory must be free'd.
+ int64_t ConstPool64; // Constant pool reference. This is the value
+ uint64_t UConstPool64;// Unsigned constant pool reference.
+ };
+
+ static ValID create(int Num) {
+ ValID D; D.Type = 0; D.Num = Num; return D;
+ }
+
+ static ValID create(char *Name) {
+ ValID D; D.Type = 1; D.Name = Name; return D;
+ }
+
+ static ValID create(int64_t Val) {
+ ValID D; D.Type = 2; D.ConstPool64 = Val; return D;
+ }
+
+ static ValID create(uint64_t Val) {
+ ValID D; D.Type = 3; D.UConstPool64 = Val; return D;
+ }
+
+ static ValID create_conststr(char *Name) {
+ ValID D; D.Type = 4; D.Name = Name; return D;
+ }
+
+ inline void destroy() {
+ if (Type == 1 || Type == 4) free(Name); // Free this strdup'd memory...
+ }
+
+ inline ValID copy() const {
+ if (Type != 1 && Type != 4) return *this;
+ ValID Result = *this;
+ Result.Name = strdup(Name);
+ return Result;
+ }
+
+ inline string getName() const {
+ switch (Type) {
+ case 0: return string("#") + itostr(Num);
+ case 1: return Name;
+ case 4: return string("\"") + Name + string("\"");
+ default: return string("%") + itostr(ConstPool64);
+ }
+ }
+};
+
+
+
+template<class SuperType>
+class PlaceholderDef : public SuperType {
+ ValID D;
+ // TODO: Placeholder def should hold Line #/Column # of definition in case
+ // there is an error resolving the defintition!
+public:
+ PlaceholderDef(const Type *Ty, const ValID &d) : SuperType(Ty), D(d) {}
+ ValID &getDef() { return D; }
+};
+
+struct InstPlaceHolderHelper : public Instruction {
+ InstPlaceHolderHelper(const Type *Ty) : Instruction(Ty, UserOp1, "") {}
+
+ virtual Instruction *clone() const { abort(); }
+
+ inline virtual void dropAllReferences() {}
+ virtual string getOpcode() const { return "placeholder"; }
+
+ // No "operands"...
+ virtual Value *getOperand(unsigned i) { return 0; }
+ virtual const Value *getOperand(unsigned i) const { return 0; }
+ virtual bool setOperand(unsigned i, Value *Val) { return false; }
+ virtual unsigned getNumOperands() const { return 0; }
+};
+
+struct BBPlaceHolderHelper : public BasicBlock {
+ BBPlaceHolderHelper(const Type *Ty) : BasicBlock() {
+ assert(Ty->isLabelType());
+ }
+};
+
+struct MethPlaceHolderHelper : public Method {
+ MethPlaceHolderHelper(const Type *Ty)
+ : Method((const MethodType*)Ty) {
+ assert(Ty->isMethodType() && "Method placeholders must be method types!");
+ }
+};
+
+typedef PlaceholderDef<InstPlaceHolderHelper> DefPlaceHolder;
+typedef PlaceholderDef<BBPlaceHolderHelper> BBPlaceHolder;
+typedef PlaceholderDef<MethPlaceHolderHelper> MethPlaceHolder;
+//typedef PlaceholderDef<ModulePlaceHolderHelper> ModulePlaceHolder;
+
+static inline ValID &getValIDFromPlaceHolder(Value *Def) {
+ switch (Def->getType()->getPrimitiveID()) {
+ case Type::LabelTyID: return ((BBPlaceHolder*)Def)->getDef();
+ case Type::MethodTyID: return ((MethPlaceHolder*)Def)->getDef();
+//case Type::ModuleTyID: return ((ModulePlaceHolder*)Def)->getDef();
+ default: return ((DefPlaceHolder*)Def)->getDef();
+ }
+}
+
+#endif