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#ifndef RPC_H
#define RPC_H
#include <string>
#include <map>
#include <stdexcept>
class RPCValue;
typedef enum
{
RPCNull,
RPCBoolean,
RPCInteger,
RPCString,
RPCArray,
RPCObject
} RPCValueType;
typedef std::map<std::string,RPCValue*> RPCObjectContainer;
typedef std::vector<RPCValue*> RPCArrayContainer;
class RPCValue : public classbase
{
protected:
RPCValueType type;
void *value;
double *CastInteger()
{
return (double*)value;
}
std::string *CastString()
{
return (std::string*)value;
}
RPCObjectContainer *CastObject()
{
return (RPCObjectContainer*)value;
}
RPCArrayContainer *CastArray()
{
return (RPCArrayContainer*)value;
}
void DestroyValue()
{
// Some versions of GCC complain about declaration in switch statements
RPCArrayContainer *a;
RPCObjectContainer *o;
switch (type)
{
case RPCInteger:
delete this->CastInteger();
break;
case RPCString:
delete this->CastString();
break;
case RPCArray:
a = this->CastArray();
for (RPCArrayContainer::iterator i = a->begin(); i != a->end(); i++)
delete *i;
delete a;
break;
case RPCObject:
o = this->CastObject();
for (RPCObjectContainer::iterator i = o->begin(); i != o->end(); i++)
delete i->second;
delete o;
break;
default:
break;
}
value = NULL;
}
void InitValue()
{
switch (type)
{
case RPCNull:
case RPCBoolean:
value = NULL;
break;
case RPCInteger:
value = new double;
break;
case RPCString:
value = new std::string;
break;
case RPCArray:
value = new RPCArrayContainer;
break;
case RPCObject:
value = new RPCObjectContainer;
break;
}
}
RPCValue(const RPCValue &v) { }
public:
RPCValue *parent;
RPCValue(RPCValue *parent = NULL) : type(RPCNull), value(NULL), parent(parent) { }
RPCValue(RPCValueType type, RPCValue *parent = NULL) : type(type), value(NULL), parent(parent) { InitValue(); }
RPCValue(bool nvalue, RPCValue *parent = NULL) : type(RPCBoolean), value((void*)nvalue), parent(parent) { }
RPCValue(double nvalue, RPCValue *parent = NULL) : type(RPCInteger), parent(parent) { value = new double(nvalue); }
RPCValue(const std::string &nvalue, RPCValue *parent = NULL) : type(RPCString), parent(parent) { value = new std::string(nvalue); }
virtual ~RPCValue()
{
DestroyValue();
}
RPCValueType GetType()
{
return type;
}
void SetNull()
{
DestroyValue();
type = RPCNull;
}
void SetBoolean(bool nvalue)
{
DestroyValue();
value = (void*)nvalue;
type = RPCBoolean;
}
void SetInteger(double nvalue)
{
if (type == RPCInteger)
{
*this->CastInteger() = nvalue;
}
else
{
DestroyValue();
value = new double(nvalue);
type = RPCInteger;
}
}
void SetString(const std::string &nvalue)
{
if (type == RPCString)
{
this->CastString()->assign(nvalue);
}
else
{
DestroyValue();
value = new std::string(nvalue);
type = RPCString;
}
}
void SetArray()
{
if (type == RPCArray)
{
this->CastArray()->clear();
}
else
{
DestroyValue();
type = RPCArray;
InitValue();
}
}
void SetObject()
{
if (type == RPCObject)
{
this->CastObject()->clear();
}
else
{
DestroyValue();
type = RPCObject;
InitValue();
}
}
void ArrayAdd(RPCValue *nvalue)
{
if (type != RPCArray)
return;
RPCArrayContainer *a = this->CastArray();
a->push_back(nvalue);
nvalue->parent = this;
}
void ObjectAdd(const std::string &key, RPCValue *nvalue)
{
if (type != RPCObject)
return;
RPCObjectContainer *o = this->CastObject();
o->insert(std::make_pair(key, nvalue));
nvalue->parent = this;
}
RPCValue *GetArray(int i)
{
if (type != RPCArray)
return NULL;
RPCArrayContainer *a = this->CastArray();
if ((i < 0) || (i >= (signed)a->size()))
return NULL;
return a->at(i);
}
int ArraySize()
{
if (type != RPCArray)
return 0;
RPCArrayContainer *a = this->CastArray();
return a->size();
}
RPCValue *GetObject(const std::string &key)
{
if (type != RPCObject)
return NULL;
RPCObjectContainer *o = this->CastObject();
RPCObjectContainer::iterator it = o->find(key);
if (it == o->end())
return NULL;
return it->second;
}
std::pair<RPCObjectContainer::iterator,RPCObjectContainer::iterator> GetObjectIterator()
{
if (type != RPCObject)
throw std::runtime_error("Cannot get iterator for a non-object RPC value");
RPCObjectContainer *o = this->CastObject();
return std::make_pair(o->begin(), o->end());
}
std::string GetString()
{
if (type != RPCString)
return std::string();
return *this->CastString();
}
double GetInt()
{
if (type != RPCInteger)
return 0;
return *this->CastInteger();
}
bool GetBool()
{
if (type != RPCBoolean)
return 0;
return (value != NULL);
}
};
class RPCRequest : public classbase
{
protected:
public:
std::string method;
RPCValue *parameters;
RPCValue *result;
std::string provider;
bool claimed;
std::string error;
RPCRequest(const std::string &provider, const std::string &method, RPCValue *parameters)
: method(method), parameters(parameters), provider(provider), claimed(false)
{
result = new RPCValue();
}
~RPCRequest()
{
if (result)
delete result;
}
};
#endif
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