350 lines
8.4 KiB
C++
350 lines
8.4 KiB
C++
#ifndef VALUE_H
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#define VALUE_H
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#include <string>
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#include <stdint.h>
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#include "ptr.h"
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#include "object-base.h"
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namespace ns3 {
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class ParamSpec;
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class PValue;
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class Value
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{
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public:
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Value ();
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Value (const Value &o);
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Value &operator = (const Value &o);
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virtual ~Value ();
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virtual PValue Copy (void) const = 0;
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virtual std::string SerializeToString (Ptr<const ParamSpec> spec) const = 0;
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virtual bool DeserializeFromString (std::string value, Ptr<const ParamSpec> spec) = 0;
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private:
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friend class PValue;
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uint32_t m_count;
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};
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class PValue
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{
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public:
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PValue ();
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PValue (const PValue &o);
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PValue &operator = (const PValue &o);
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~PValue ();
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PValue Copy (void) const;
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std::string SerializeToString (Ptr<const ParamSpec> spec) const;
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bool DeserializeFromString (std::string value, Ptr<const ParamSpec> spec);
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template <typename T>
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static PValue Create (void);
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template <typename T, typename T1>
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static PValue Create (T1 a1);
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template <typename T>
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T DynCast (void) const;
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template <typename T>
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PValue (Ptr<T> pointer);
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template <typename T>
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operator Ptr<T> ();
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PValue (const char *value);
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PValue (std::string value);
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private:
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PValue (Value *value);
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Value *m_value;
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};
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class ParamSpec : public ObjectBase
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{
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public:
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ParamSpec ();
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void Ref (void) const;
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void Unref (void) const;
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virtual ~ParamSpec ();
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/**
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* \param object the object instance to set the value in
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* \param value the value to set
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* \returns true if the value is valid and it could be set
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* successfully, false otherwise.
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*/
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virtual bool Set (ObjectBase * object, PValue value) const = 0;
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virtual bool Get (const ObjectBase * object, PValue value) const = 0;
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virtual bool Check (PValue value) const = 0;
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virtual PValue GetInitialValue (void) const = 0;
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private:
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mutable uint32_t m_count;
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};
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template <typename T, typename U>
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Ptr<const ParamSpec>
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MakePtrParamSpec (Ptr<U> T::*memberVariable);
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template <typename T, typename U>
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Ptr<const ParamSpec>
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MakePtrParamSpec (void (T::*setter) (Ptr<U>));
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template <typename T, typename U>
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Ptr<const ParamSpec>
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MakePtrParamSpec (Ptr<U> (T::*getter) (void) const);
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} // namespace ns3
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namespace ns3 {
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/********************************************************
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* A class used to hold std::string values.
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********************************************************/
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class StringValue : public Value
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{
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public:
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StringValue (const char *value);
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StringValue (std::string value);
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void Set (std::string value);
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std::string Get (void) const;
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virtual PValue Copy (void) const;
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virtual std::string SerializeToString (Ptr<const ParamSpec> spec) const;
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virtual bool DeserializeFromString (std::string value, Ptr<const ParamSpec> spec);
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StringValue (PValue value);
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operator PValue () const;
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private:
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std::string m_value;
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};
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/********************************************************
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* The class used to access the pointer stored in a
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* PtrValue<T> Value instance.
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********************************************************/
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class PtrValueBase : public Value
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{
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public:
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virtual ObjectBase *PeekObjectBase (void) const = 0;
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virtual bool SetObjectBase (ObjectBase *object) = 0;
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virtual std::string SerializeToString (Ptr<const ParamSpec> spec) const;
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virtual bool DeserializeFromString (std::string value, Ptr<const ParamSpec> spec);
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};
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/********************************************************
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* Store the content of a Ptr<T> in a Value
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********************************************************/
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template <typename T>
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class PtrValue : public PtrValueBase
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{
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public:
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PtrValue (Ptr<T> pointer)
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: m_pointer (pointer) {}
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virtual ObjectBase *PeekObjectBase (void) const {
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return PeekPointer (m_pointer);
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}
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virtual bool SetObjectBase (ObjectBase *object) {
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T *ptr = dynamic_cast<T *> (object);
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if (ptr == 0)
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{
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return false;
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}
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m_pointer = ptr;
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return true;
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}
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virtual PValue Copy (void) const {
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return PValue::Create<PtrValue<T> > (*this);
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}
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private:
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Ptr<T> m_pointer;
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};
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/********************************************************
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* The implementation of the PValue
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* class template methods.
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********************************************************/
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template <typename T>
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PValue
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PValue::Create (void)
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{
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return PValue (new T ());
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}
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template <typename T, typename T1>
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PValue
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PValue::Create (T1 a1)
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{
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return PValue (new T (a1));
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}
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template <typename T>
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T
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PValue::DynCast (void) const
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{
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return dynamic_cast<T> (m_value);
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}
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template <typename T>
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PValue::PValue (Ptr<T> pointer)
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: m_value (new PtrValue<T> (pointer))
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{}
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template <typename T>
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PValue::operator Ptr<T> ()
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{
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PtrValueBase *value = DynCast<PtrValueBase *> ();
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if (value == 0)
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{
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return 0;
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}
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ObjectBase *objectBase = value->PeekObjectBase ();
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T *obj = dynamic_cast<T *> (objectBase);
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if (obj == 0)
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{
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return 0;
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}
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return obj;
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}
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/********************************************************
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* The ParamSpec associated to
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* PtrValue<T>
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********************************************************/
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template <typename T, typename U>
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class PtrParamSpec : public ParamSpec
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{
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public:
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virtual ~PtrParamSpec () {}
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virtual bool Set (ObjectBase * object, PValue val) const {
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T *obj = dynamic_cast<T *> (object);
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if (obj == 0)
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{
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return false;
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}
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const PtrValueBase *value = val.DynCast<const PtrValueBase *> ();
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if (value == 0)
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{
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return false;
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}
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Ptr<U> ptr = dynamic_cast<U*> (value->PeekObjectBase ());
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if (ptr == 0)
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{
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return false;
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}
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DoSet (obj, ptr);
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return true;
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}
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virtual bool Get (const ObjectBase * object, PValue val) const {
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const T *obj = dynamic_cast<const T *> (object);
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if (obj == 0)
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{
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return false;
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}
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PtrValueBase *value = val.DynCast<PtrValueBase *> ();
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if (value == 0)
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{
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return false;
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}
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return value->SetObjectBase (PeekPointer (DoGet (obj)));
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}
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virtual bool Check (PValue val) const {
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const PtrValueBase *value = val.DynCast<const PtrValueBase *> ();
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if (value == 0)
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{
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return false;
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}
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if (value->PeekObjectBase () == 0)
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{
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return true;
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}
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U *ptr = dynamic_cast<U*> (value->PeekObjectBase ());
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if (ptr == 0)
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{
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return false;
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}
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return true;
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}
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virtual PValue GetInitialValue (void) const {
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return PValue::Create<PtrValue<U> > (Ptr<U> (0));
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}
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private:
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virtual void DoSet (T *object, Ptr<U> value) const = 0;
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virtual Ptr<U> DoGet (const T *object) const = 0;
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};
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template <typename T, typename U>
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Ptr<const ParamSpec>
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MakePtrParamSpec (Ptr<U> T::*memberVariable)
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{
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struct MemberVariable : public PtrParamSpec<T,U>
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{
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Ptr<U> T::*m_memberVariable;
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virtual MemberVariable *Copy (void) const {
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return new MemberVariable (*this);
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}
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virtual void DoSet (T *object, Ptr<U> value) const {
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(object->*m_memberVariable) = value;
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}
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virtual Ptr<U> DoGet (const T *object) const {
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return object->*m_memberVariable;
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}
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} *spec = new MemberVariable ();
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spec->m_memberVariable = memberVariable;
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return Ptr<const ParamSpec> (spec, false);
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}
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template <typename T, typename U>
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Ptr<const ParamSpec>
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MakePtrParamSpec (void (T::*setter) (Ptr<U>))
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{
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struct MemberMethod : public PtrParamSpec<T,U>
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{
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void (T::*m_setter) (Ptr<U>);
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virtual MemberMethod *Copy (void) const {
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return new MemberMethod (*this);
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}
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virtual void DoSet (T *object, Ptr<U> value) const {
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(object->*m_setter) (value);
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}
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virtual Ptr<U> DoGet (const T *object) const {
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return 0;
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//return (object->*m_getter) ();
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}
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} *spec = new MemberMethod ();
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spec->m_setter = setter;
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return Ptr<const ParamSpec> (spec, false);
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}
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template <typename T, typename U>
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Ptr<const ParamSpec>
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MakePtrParamSpec (Ptr<U> (T::*getter) (void) const)
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{
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struct MemberMethod : public PtrParamSpec<T,U>
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{
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void (T::*m_getter) (Ptr<U>);
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virtual MemberMethod *Copy (void) const {
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return new MemberMethod (*this);
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}
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virtual void DoSet (T *object, Ptr<U> value) const {
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//(object->*m_setter) (value);
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}
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virtual Ptr<U> DoGet (const T *object) const {
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return (object->*m_getter) ();
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}
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} *spec = new MemberMethod ();
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spec->m_getter = getter;
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return Ptr<const ParamSpec> (spec, false);
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}
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} // namespace ns3
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#endif /* VALUE_H */
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