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// Copyright 2011 Google Inc. All Rights Reserved.
#ifndef ART_SRC_MANAGED_REGISTER_H_
#define ART_SRC_MANAGED_REGISTER_H_
namespace art {
namespace x86 {
class X86ManagedRegister;
}
namespace arm {
class ArmManagedRegister;
}
class ManagedRegister {
public:
// ManagedRegister is a value class. There exists no method to change the
// internal state. We therefore allow a copy constructor and an
// assignment-operator.
ManagedRegister(const ManagedRegister& other) : id_(other.id_) { }
ManagedRegister& operator=(const ManagedRegister& other) {
id_ = other.id_;
return *this;
}
x86::X86ManagedRegister AsX86() const;
arm::ArmManagedRegister AsArm() const;
// It is valid to invoke Equals on and with a NoRegister.
bool Equals(const ManagedRegister& other) const {
return id_ == other.id_;
}
bool IsNoRegister() const {
return id_ == kNoRegister;
}
static ManagedRegister NoRegister() {
return ManagedRegister();
}
protected:
static const int kNoRegister = -1;
ManagedRegister() : id_(kNoRegister) { }
explicit ManagedRegister(int reg_id) : id_(reg_id) { }
int id_;
};
} // namespace art
#endif // ART_SRC_MANAGED_REGISTER_H_