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/**
* @file llsdparam.h
* @brief parameter block abstraction for creating complex objects and
* parsing construction parameters from xml and LLSD
*
* $LicenseInfo:firstyear=2008&license=viewerlgpl$
* Second Life Viewer Source Code
* Copyright (C) 2010, Linden Research, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License only.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* Linden Research, Inc., 945 Battery Street, San Francisco, CA 94111 USA
* $/LicenseInfo$
*/
#ifndef LL_LLSDPARAM_H
#define LL_LLSDPARAM_H
#include "llinitparam.h"
class LLParamSDParser
: public LLInitParam::Parser,
public LLSingleton<LLParamSDParser>
{
LOG_CLASS(LLParamSDParser);
typedef LLInitParam::Parser parser_t;
protected:
LLParamSDParser();
friend class LLSingleton<LLParamSDParser>;
public:
void readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool silent = false);
void writeSD(LLSD& sd, const LLInitParam::BaseBlock& block);
/*virtual*/ std::string getCurrentElementName();
private:
void readSDValues(const LLSD& sd, LLInitParam::BaseBlock& block);
template<typename T>
bool readTypedValue(void* val_ptr, boost::function<T(const LLSD&)> parser_func)
{
if (!mCurReadSD) return false;
*((T*)val_ptr) = parser_func(*mCurReadSD);
return true;
}
template<typename T>
bool writeTypedValue(const void* val_ptr, const parser_t::name_stack_t& name_stack)
{
if (!mWriteSD) return false;
LLSD* sd_to_write = getSDWriteNode(name_stack);
if (!sd_to_write) return false;
sd_to_write->assign(*((const T*)val_ptr));
return true;
}
LLSD* getSDWriteNode(const parser_t::name_stack_t& name_stack);
bool readSDParam(void* value_ptr);
bool writeU32Param(const void* value_ptr, const parser_t::name_stack_t& name_stack);
Parser::name_stack_t mNameStack;
const LLSD* mCurReadSD;
LLSD* mWriteSD;
};
template<typename T>
class LLSDParamAdapter : public T
{
public:
LLSDParamAdapter() {}
LLSDParamAdapter(const LLSD& sd)
{
LLParamSDParser::instance().readSD(sd, *this);
}
LLSDParamAdapter(const T& val)
{
T::operator=(val);
}
};
#endif // LL_LLSDPARAM_H
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