#ifndef LLVM_ADT_INMEMORYSTRUCT_H
#define LLVM_ADT_INMEMORYSTRUCT_H
#include <cassert>
namespace llvm {
template<typename T>
class InMemoryStruct {
typedef T value_type;
typedef value_type &reference;
typedef value_type *pointer;
typedef const value_type &const_reference;
typedef const value_type *const_pointer;
value_type *Target;
value_type Contents;
private:
public:
InMemoryStruct() : Target(0) {}
InMemoryStruct(reference Value) : Target(&Contents), Contents(Value) {}
InMemoryStruct(pointer Value) : Target(Value) {}
InMemoryStruct(const InMemoryStruct<T> &Value) { *this = Value; }
void operator=(const InMemoryStruct<T> &Value) {
if (Value.Target != &Value.Contents) {
Target = Value.Target;
} else {
Target = &Contents;
Contents = Value.Contents;
}
}
const_reference operator*() const {
assert(Target && "Cannot dereference null pointer");
return *Target;
}
reference operator*() {
assert(Target && "Cannot dereference null pointer");
return *Target;
}
const_pointer operator->() const {
return Target;
}
pointer operator->() {
return Target;
}
operator bool() const { return Target != 0; }
};
}
#endif