#ifndef LLVM_ADT_POINTERUNION_H
#define LLVM_ADT_POINTERUNION_H
#include "llvm/ADT/PointerIntPair.h"
namespace llvm {
template <typename PT1, typename PT2>
static inline int getPointerUnionTypeNum(PT1 *P) { return 0; }
template <typename PT1, typename PT2>
static inline int getPointerUnionTypeNum(PT2 *P) { return 1; }
template <typename PT1, typename PT2>
static inline int getPointerUnionTypeNum(...) { return -1; }
template <typename PT1, typename PT2>
class PointerUnionUIntTraits {
public:
static inline void *getAsVoidPointer(void *P) { return P; }
static inline void *getFromVoidPointer(void *P) { return P; }
enum {
PT1BitsAv = PointerLikeTypeTraits<PT1>::NumLowBitsAvailable,
PT2BitsAv = PointerLikeTypeTraits<PT2>::NumLowBitsAvailable,
NumLowBitsAvailable = PT1BitsAv < PT2BitsAv ? PT1BitsAv : PT2BitsAv
};
};
template <typename PT1, typename PT2>
class PointerUnion {
public:
typedef PointerIntPair<void*, 1, bool,
PointerUnionUIntTraits<PT1,PT2> > ValTy;
private:
ValTy Val;
public:
PointerUnion() {}
PointerUnion(PT1 V) {
Val.setPointer(
const_cast<void *>(PointerLikeTypeTraits<PT1>::getAsVoidPointer(V)));
Val.setInt(0);
}
PointerUnion(PT2 V) {
Val.setPointer(
const_cast<void *>(PointerLikeTypeTraits<PT2>::getAsVoidPointer(V)));
Val.setInt(1);
}
bool isNull() const { return Val.getPointer() == 0; }
operator bool() const { return !isNull(); }
template<typename T>
int is() const {
int TyNo = ::llvm::getPointerUnionTypeNum<PT1, PT2>((T*)0);
assert(TyNo != -1 && "Type query could never succeed on PointerUnion!");
return static_cast<int>(Val.getInt()) == TyNo;
}
template<typename T>
T get() const {
assert(is<T>() && "Invalid accessor called");
return PointerLikeTypeTraits<T>::getFromVoidPointer(Val.getPointer());
}
template<typename T>
T dyn_cast() const {
if (is<T>()) return get<T>();
return T();
}
const PointerUnion &operator=(const PT1 &RHS) {
Val.setPointer(
const_cast<void *>(PointerLikeTypeTraits<PT1>::getAsVoidPointer(RHS)));
Val.setInt(0);
return *this;
}
const PointerUnion &operator=(const PT2 &RHS) {
Val.setPointer(
const_cast<void *>(PointerLikeTypeTraits<PT2>::getAsVoidPointer(RHS)));
Val.setInt(1);
return *this;
}
void *getOpaqueValue() const { return Val.getOpaqueValue(); }
static inline PointerUnion getFromOpaqueValue(void *VP) {
PointerUnion V;
V.Val = ValTy::getFromOpaqueValue(VP);
return V;
}
};
template<typename PT1, typename PT2>
class PointerLikeTypeTraits<PointerUnion<PT1, PT2> > {
public:
static inline void *
getAsVoidPointer(const PointerUnion<PT1, PT2> &P) {
return P.getOpaqueValue();
}
static inline PointerUnion<PT1, PT2>
getFromVoidPointer(void *P) {
return PointerUnion<PT1, PT2>::getFromOpaqueValue(P);
}
enum {
NumLowBitsAvailable =
PointerLikeTypeTraits<typename PointerUnion<PT1,PT2>::ValTy>
::NumLowBitsAvailable
};
};
template <typename PT1, typename PT2, typename PT3>
class PointerUnion3 {
public:
typedef PointerUnion<PT1, PT2> InnerUnion;
typedef PointerUnion<InnerUnion, PT3> ValTy;
private:
ValTy Val;
public:
PointerUnion3() {}
PointerUnion3(PT1 V) {
Val = InnerUnion(V);
}
PointerUnion3(PT2 V) {
Val = InnerUnion(V);
}
PointerUnion3(PT3 V) {
Val = V;
}
bool isNull() const { return Val.isNull(); }
operator bool() const { return !isNull(); }
template<typename T>
int is() const {
if (::llvm::getPointerUnionTypeNum<PT1, PT2>((T*)0) != -1)
return Val.template is<InnerUnion>() &&
Val.template get<InnerUnion>().template is<T>();
return Val.template is<T>();
}
template<typename T>
T get() const {
assert(is<T>() && "Invalid accessor called");
if (::llvm::getPointerUnionTypeNum<PT1, PT2>((T*)0) != -1)
return Val.template get<InnerUnion>().template get<T>();
return Val.template get<T>();
}
template<typename T>
T dyn_cast() const {
if (is<T>()) return get<T>();
return T();
}
const PointerUnion3 &operator=(const PT1 &RHS) {
Val = InnerUnion(RHS);
return *this;
}
const PointerUnion3 &operator=(const PT2 &RHS) {
Val = InnerUnion(RHS);
return *this;
}
const PointerUnion3 &operator=(const PT3 &RHS) {
Val = RHS;
return *this;
}
void *getOpaqueValue() const { return Val.getOpaqueValue(); }
static inline PointerUnion3 getFromOpaqueValue(void *VP) {
PointerUnion3 V;
V.Val = ValTy::getFromOpaqueValue(VP);
return V;
}
};
template<typename PT1, typename PT2, typename PT3>
class PointerLikeTypeTraits<PointerUnion3<PT1, PT2, PT3> > {
public:
static inline void *
getAsVoidPointer(const PointerUnion3<PT1, PT2, PT3> &P) {
return P.getOpaqueValue();
}
static inline PointerUnion3<PT1, PT2, PT3>
getFromVoidPointer(void *P) {
return PointerUnion3<PT1, PT2, PT3>::getFromOpaqueValue(P);
}
enum {
NumLowBitsAvailable =
PointerLikeTypeTraits<typename PointerUnion3<PT1, PT2, PT3>::ValTy>
::NumLowBitsAvailable
};
};
template <typename PT1, typename PT2, typename PT3, typename PT4>
class PointerUnion4 {
public:
typedef PointerUnion<PT1, PT2> InnerUnion1;
typedef PointerUnion<PT3, PT4> InnerUnion2;
typedef PointerUnion<InnerUnion1, InnerUnion2> ValTy;
private:
ValTy Val;
public:
PointerUnion4() {}
PointerUnion4(PT1 V) {
Val = InnerUnion1(V);
}
PointerUnion4(PT2 V) {
Val = InnerUnion1(V);
}
PointerUnion4(PT3 V) {
Val = InnerUnion2(V);
}
PointerUnion4(PT4 V) {
Val = InnerUnion2(V);
}
bool isNull() const { return Val.isNull(); }
operator bool() const { return !isNull(); }
template<typename T>
int is() const {
if (::llvm::getPointerUnionTypeNum<PT1, PT2>((T*)0) != -1)
return Val.template is<InnerUnion1>() &&
Val.template get<InnerUnion1>().template is<T>();
return Val.template is<InnerUnion2>() &&
Val.template get<InnerUnion2>().template is<T>();
}
template<typename T>
T get() const {
assert(is<T>() && "Invalid accessor called");
if (::llvm::getPointerUnionTypeNum<PT1, PT2>((T*)0) != -1)
return Val.template get<InnerUnion1>().template get<T>();
return Val.template get<InnerUnion2>().template get<T>();
}
template<typename T>
T dyn_cast() const {
if (is<T>()) return get<T>();
return T();
}
const PointerUnion4 &operator=(const PT1 &RHS) {
Val = InnerUnion1(RHS);
return *this;
}
const PointerUnion4 &operator=(const PT2 &RHS) {
Val = InnerUnion1(RHS);
return *this;
}
const PointerUnion4 &operator=(const PT3 &RHS) {
Val = InnerUnion2(RHS);
return *this;
}
const PointerUnion4 &operator=(const PT4 &RHS) {
Val = InnerUnion2(RHS);
return *this;
}
void *getOpaqueValue() const { return Val.getOpaqueValue(); }
static inline PointerUnion4 getFromOpaqueValue(void *VP) {
PointerUnion4 V;
V.Val = ValTy::getFromOpaqueValue(VP);
return V;
}
};
template<typename PT1, typename PT2, typename PT3, typename PT4>
class PointerLikeTypeTraits<PointerUnion4<PT1, PT2, PT3, PT4> > {
public:
static inline void *
getAsVoidPointer(const PointerUnion4<PT1, PT2, PT3, PT4> &P) {
return P.getOpaqueValue();
}
static inline PointerUnion4<PT1, PT2, PT3, PT4>
getFromVoidPointer(void *P) {
return PointerUnion4<PT1, PT2, PT3, PT4>::getFromOpaqueValue(P);
}
enum {
NumLowBitsAvailable =
PointerLikeTypeTraits<typename PointerUnion4<PT1, PT2, PT3, PT4>::ValTy>
::NumLowBitsAvailable
};
};
}
#endif