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//===______-- llvm/GlobalAlias.h - GlobalAlias class ------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file was developed by Anton Korobeynikov and is distributed under
// the University of Illinois Open Source License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains the declaration of the GlobalAlias class, which
// represents a single function or variable alias in the VM.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_GLOBAL_ALIAS_H
#define LLVM_GLOBAL_ALIAS_H
#include "llvm/GlobalValue.h"
namespace llvm {
class Module;
class Constant;
class PointerType;
template<typename ValueSubClass, typename ItemParentClass>
class SymbolTableListTraits;
class GlobalAlias : public GlobalValue {
friend class SymbolTableListTraits<GlobalAlias, Module>;
void operator=(const GlobalAlias &); // Do not implement
GlobalAlias(const GlobalAlias &); // Do not implement
void setParent(Module *parent);
GlobalAlias *Prev, *Next;
void setNext(GlobalAlias *N) { Next = N; }
void setPrev(GlobalAlias *N) { Prev = N; }
const GlobalValue* Aliasee;
std::string Target;
public:
/// GlobalAlias ctor - If a parent module is specified, the alias is
/// automatically inserted into the end of the specified modules alias list.
GlobalAlias(const Type *Ty, LinkageTypes Linkage, const std::string &Name = "",
const GlobalValue* Aliasee = 0, Module *Parent = 0);
/// isDeclaration - Is this global variable lacking an initializer? If so,
/// the global variable is defined in some other translation unit, and is thus
/// only a declaration here.
virtual bool isDeclaration() const;
/// removeFromParent - This method unlinks 'this' from the containing module,
/// but does not delete it.
///
virtual void removeFromParent();
/// eraseFromParent - This method unlinks 'this' from the containing module
/// and deletes it.
///
virtual void eraseFromParent();
virtual void print(std::ostream &OS) const;
void print(std::ostream *OS) const { if (OS) print(*OS); }
void setAliasee(const GlobalValue* GV);
const GlobalValue* getAliasee() const { return Aliasee; }
// Methods for support type inquiry through isa, cast, and dyn_cast:
static inline bool classof(const GlobalAlias *) { return true; }
static inline bool classof(const Value *V) {
return V->getValueID() == Value::GlobalAliasVal;
}
private:
// getNext/Prev - Return the next or previous alias in the list.
GlobalAlias *getNext() { return Next; }
const GlobalAlias *getNext() const { return Next; }
GlobalAlias *getPrev() { return Prev; }
const GlobalAlias *getPrev() const { return Prev; }
};
} // End llvm namespace
#endif
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