author | Mathieu Lacage <mathieu.lacage@sophia.inria.fr> |
Wed, 20 Feb 2008 21:17:34 +0100 | |
changeset 2437 | 44e34ffee8e3 |
parent 2436 | 23415bac7eaf |
permissions | -rw-r--r-- |
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#ifndef VALUE_H |
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#define VALUE_H |
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|
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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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|
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namespace ns3 { |
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class AttributeAccessor; |
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class AttributeChecker; |
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class Attribute; |
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class AttributeValue |
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{ |
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public: |
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AttributeValue (); |
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AttributeValue (const AttributeValue &o); |
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AttributeValue &operator = (const AttributeValue &o); |
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virtual ~AttributeValue (); |
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virtual Attribute Copy (void) const = 0; |
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virtual std::string SerializeToString (Ptr<const AttributeChecker> checker) const = 0; |
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virtual bool DeserializeFromString (std::string value, Ptr<const AttributeChecker> checker) = 0; |
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private: |
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friend class Attribute; |
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uint32_t m_count; |
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}; |
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class Attribute |
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{ |
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public: |
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Attribute (); |
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Attribute (const Attribute &o); |
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Attribute &operator = (const Attribute &o); |
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~Attribute (); |
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Attribute Copy (void) const; |
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std::string SerializeToString (Ptr<const AttributeChecker> checker) const; |
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bool DeserializeFromString (std::string value, Ptr<const AttributeChecker> checker); |
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template <typename T> |
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static Attribute Create (void); |
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template <typename T, typename T1> |
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static Attribute 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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Attribute (Ptr<T> pointer); |
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template <typename T> |
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operator Ptr<T> (); |
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Attribute (const char *value); |
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Attribute (std::string value); |
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private: |
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Attribute (AttributeValue *value); |
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AttributeValue *m_value; |
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}; |
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class AttributeAccessor : public ObjectBase |
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{ |
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public: |
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AttributeAccessor (); |
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void Ref (void) const; |
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void Unref (void) const; |
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virtual ~AttributeAccessor (); |
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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, Attribute value) const = 0; |
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virtual bool Get (const ObjectBase * object, Attribute value) const = 0; |
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private: |
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mutable uint32_t m_count; |
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}; |
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|
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class AttributeChecker : public ObjectBase |
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{ |
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public: |
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AttributeChecker (); |
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void Ref (void) const; |
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void Unref (void) const; |
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virtual ~AttributeChecker (); |
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virtual bool Check (Attribute value) 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> |
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Ptr<AttributeChecker> |
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MakeSimpleAttributeChecker (void); |
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template <typename T, typename U> |
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Ptr<const AttributeAccessor> |
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MakePtrAccessor (Ptr<U> T::*memberVariable); |
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template <typename T, typename U> |
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Ptr<const AttributeAccessor> |
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MakePtrAccessor (void (T::*setter) (Ptr<U>)); |
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template <typename T, typename U> |
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Ptr<const AttributeAccessor> |
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MakePtrAccessor (Ptr<U> (T::*getter) (void) const); |
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111 |
} // namespace ns3 |
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112 |
|
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113 |
namespace ns3 { |
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114 |
|
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115 |
/******************************************************** |
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* A class used to hold std::string values. |
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117 |
********************************************************/ |
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118 |
|
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class StringValue : public AttributeValue |
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{ |
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121 |
public: |
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122 |
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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126 |
|
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virtual Attribute Copy (void) const; |
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virtual std::string SerializeToString (Ptr<const AttributeChecker> checker) const; |
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virtual bool DeserializeFromString (std::string value, Ptr<const AttributeChecker> checker); |
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StringValue (Attribute value); |
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operator Attribute () const; |
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133 |
private: |
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134 |
std::string m_value; |
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135 |
}; |
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136 |
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137 |
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138 |
/******************************************************** |
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* The class used to access the pointer stored in a |
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140 |
* PtrValue<T> AttributeValue instance. |
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141 |
********************************************************/ |
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142 |
|
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143 |
class PtrValueBase : public AttributeValue |
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144 |
{ |
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145 |
public: |
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146 |
virtual ObjectBase *PeekObjectBase (void) const = 0; |
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147 |
virtual bool SetObjectBase (ObjectBase *object) = 0; |
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148 |
virtual std::string SerializeToString (Ptr<const AttributeChecker> checker) const; |
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149 |
virtual bool DeserializeFromString (std::string value, Ptr<const AttributeChecker> checker); |
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150 |
}; |
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151 |
|
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152 |
/******************************************************** |
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153 |
* Store the content of a Ptr<T> in a AttributeValue |
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154 |
********************************************************/ |
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155 |
|
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156 |
template <typename T> |
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157 |
class PtrValue : public PtrValueBase |
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158 |
{ |
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159 |
public: |
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160 |
PtrValue (Ptr<T> pointer) |
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161 |
: m_pointer (pointer) {} |
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162 |
|
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163 |
virtual ObjectBase *PeekObjectBase (void) const { |
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164 |
return PeekPointer (m_pointer); |
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165 |
} |
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166 |
virtual bool SetObjectBase (ObjectBase *object) { |
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167 |
T *ptr = dynamic_cast<T *> (object); |
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168 |
if (ptr == 0) |
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169 |
{ |
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170 |
return false; |
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171 |
} |
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172 |
m_pointer = ptr; |
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173 |
return true; |
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174 |
} |
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175 |
virtual Attribute Copy (void) const { |
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176 |
return Attribute::Create<PtrValue<T> > (*this); |
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177 |
} |
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178 |
private: |
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179 |
Ptr<T> m_pointer; |
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180 |
}; |
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181 |
|
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182 |
/******************************************************** |
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183 |
* The implementation of the Attribute |
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184 |
* class template methods. |
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185 |
********************************************************/ |
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186 |
|
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187 |
|
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188 |
template <typename T> |
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189 |
Attribute |
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190 |
Attribute::Create (void) |
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191 |
{ |
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192 |
return Attribute (new T ()); |
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193 |
} |
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194 |
template <typename T, typename T1> |
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195 |
Attribute |
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196 |
Attribute::Create (T1 a1) |
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197 |
{ |
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198 |
return Attribute (new T (a1)); |
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199 |
} |
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200 |
|
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201 |
template <typename T> |
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202 |
T |
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203 |
Attribute::DynCast (void) const |
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204 |
{ |
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205 |
return dynamic_cast<T> (m_value); |
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206 |
} |
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207 |
|
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208 |
template <typename T> |
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209 |
Attribute::Attribute (Ptr<T> pointer) |
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210 |
: m_value (new PtrValue<T> (pointer)) |
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211 |
{} |
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212 |
template <typename T> |
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213 |
Attribute::operator Ptr<T> () |
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214 |
{ |
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215 |
PtrValueBase *value = DynCast<PtrValueBase *> (); |
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216 |
if (value == 0) |
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217 |
{ |
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218 |
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 Accessor associated to |
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* PtrValue<T> |
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********************************************************/ |
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233 |
|
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template <typename T, typename U> |
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class PtrAccessor : public AttributeAccessor |
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{ |
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public: |
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virtual ~PtrAccessor () {} |
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virtual bool Set (ObjectBase * object, Attribute 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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254 |
} |
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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, Attribute 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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261 |
{ |
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return false; |
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263 |
} |
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PtrValueBase *value = val.DynCast<PtrValueBase *> (); |
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if (value == 0) |
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266 |
{ |
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267 |
return false; |
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268 |
} |
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return value->SetObjectBase (PeekPointer (DoGet (obj))); |
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270 |
} |
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271 |
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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274 |
}; |
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275 |
|
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276 |
|
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template <typename T, typename U> |
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Ptr<const AttributeAccessor> |
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MakePtrAccessor (Ptr<U> T::*memberVariable) |
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{ |
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struct MemberVariable : public PtrAccessor<T,U> |
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282 |
{ |
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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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286 |
} |
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287 |
virtual void DoSet (T *object, Ptr<U> value) const { |
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(object->*m_memberVariable) = value; |
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289 |
} |
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290 |
virtual Ptr<U> DoGet (const T *object) const { |
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return object->*m_memberVariable; |
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292 |
} |
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293 |
} *spec = new MemberVariable (); |
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spec->m_memberVariable = memberVariable; |
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return Ptr<const AttributeAccessor> (spec, false); |
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296 |
} |
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297 |
|
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298 |
template <typename T, typename U> |
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Ptr<const AttributeAccessor> |
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MakePtrAccessor (void (T::*setter) (Ptr<U>)) |
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301 |
{ |
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302 |
struct MemberMethod : public PtrAccessor<T,U> |
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303 |
{ |
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304 |
void (T::*m_setter) (Ptr<U>); |
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305 |
virtual MemberMethod *Copy (void) const { |
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306 |
return new MemberMethod (*this); |
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307 |
} |
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308 |
virtual void DoSet (T *object, Ptr<U> value) const { |
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309 |
(object->*m_setter) (value); |
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310 |
} |
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311 |
virtual Ptr<U> DoGet (const T *object) const { |
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312 |
return 0; |
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313 |
//return (object->*m_getter) (); |
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314 |
} |
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315 |
} *spec = new MemberMethod (); |
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316 |
spec->m_setter = setter; |
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317 |
return Ptr<const AttributeAccessor> (spec, false); |
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318 |
} |
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319 |
|
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320 |
template <typename T, typename U> |
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321 |
Ptr<const AttributeAccessor> |
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322 |
MakePtrAccessor (Ptr<U> (T::*getter) (void) const) |
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323 |
{ |
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struct MemberMethod : public PtrAccessor<T,U> |
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{ |
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326 |
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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329 |
} |
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330 |
virtual void DoSet (T *object, Ptr<U> value) const { |
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//(object->*m_setter) (value); |
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332 |
} |
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333 |
virtual Ptr<U> DoGet (const T *object) const { |
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334 |
return (object->*m_getter) (); |
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335 |
} |
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336 |
} *spec = new MemberMethod (); |
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spec->m_getter = getter; |
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return Ptr<const AttributeAccessor> (spec, false); |
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339 |
} |
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340 |
|
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341 |
template <typename T> |
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342 |
Ptr<AttributeChecker> |
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343 |
MakePtrChecker (void) |
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344 |
{ |
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345 |
struct PtrChecker : public AttributeChecker |
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346 |
{ |
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virtual bool Check (Attribute val) const { |
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const PtrValueBase *value = val.DynCast<const PtrValueBase *> (); |
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349 |
if (value == 0) |
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350 |
{ |
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351 |
return false; |
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352 |
} |
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353 |
if (value->PeekObjectBase () == 0) |
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354 |
{ |
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355 |
return true; |
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|
356 |
} |
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357 |
T *ptr = dynamic_cast<T*> (value->PeekObjectBase ()); |
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358 |
if (ptr == 0) |
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359 |
{ |
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360 |
return false; |
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361 |
} |
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362 |
return true; |
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|
363 |
} |
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364 |
} *checker = new PtrChecker (); |
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365 |
return Ptr<AttributeChecker> (checker, false); |
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366 |
} |
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|
367 |
|
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368 |
template <typename T> |
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369 |
Ptr<AttributeChecker> |
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370 |
MakeSimpleAttributeChecker (void) |
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371 |
{ |
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372 |
struct SimpleAttributeChecker : public AttributeChecker |
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373 |
{ |
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374 |
virtual bool Check (Attribute value) const { |
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375 |
return value.DynCast<const T *> () != 0; |
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376 |
} |
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377 |
} *checker = new SimpleAttributeChecker (); |
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378 |
return Ptr<AttributeChecker> (checker, false); |
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379 |
} |
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380 |
|
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381 |
|
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382 |
} // namespace ns3 |
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383 |
|
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384 |
#endif /* VALUE_H */ |