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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"
#include "boost/function.hpp"
#include "llfasttimer.h"
struct LL_COMMON_API LLParamSDParserUtilities
{
static LLSD& getSDWriteNode(LLSD& input, LLInitParam::Parser::name_stack_range_t& name_stack_range);
typedef boost::function<void (const LLSD&, LLInitParam::Parser::name_stack_t&)> read_sd_cb_t;
static void readSDValues(read_sd_cb_t cb, const LLSD& sd, LLInitParam::Parser::name_stack_t& stack);
static void readSDValues(read_sd_cb_t cb, const LLSD& sd);
};
class LL_COMMON_API LLParamSDParser
: public LLInitParam::Parser
{
LOG_CLASS(LLParamSDParser);
typedef LLInitParam::Parser parser_t;
public:
LLParamSDParser();
void readSD(const LLSD& sd, LLInitParam::BaseBlock& block, bool silent = false);
template<typename BLOCK>
void writeSD(LLSD& sd,
const BLOCK& block,
const LLInitParam::predicate_rule_t rules = LLInitParam::default_parse_rules(),
const LLInitParam::BaseBlock* diff_block = NULL)
{
if (!diff_block
&& !rules.isAmbivalent(LLInitParam::HAS_DEFAULT_VALUE))
{
diff_block = &LLInitParam::defaultValue<BLOCK>();
}
writeSDImpl(sd, block, rules, diff_block);
}
/*virtual*/ std::string getCurrentElementName();
private:
void writeSDImpl(LLSD& sd,
const LLInitParam::BaseBlock& block,
const LLInitParam::predicate_rule_t,
const LLInitParam::BaseBlock* diff_block);
void submit(LLInitParam::BaseBlock& block, const LLSD& sd, LLInitParam::Parser::name_stack_t& name_stack);
template<typename T>
static bool writeTypedValue(Parser& parser, const void* val_ptr, parser_t::name_stack_t& name_stack)
{
LLParamSDParser& sdparser = static_cast<LLParamSDParser&>(parser);
if (!sdparser.mWriteRootSD) return false;
LLInitParam::Parser::name_stack_range_t range(name_stack.begin(), name_stack.end());
LLSD& sd_to_write = LLParamSDParserUtilities::getSDWriteNode(*sdparser.mWriteRootSD, range);
sd_to_write.assign(*((const T*)val_ptr));
return true;
}
static bool writeU32Param(Parser& parser, const void* value_ptr, parser_t::name_stack_t& name_stack);
static bool writeFlag(Parser& parser, const void* value_ptr, parser_t::name_stack_t& name_stack);
static bool readFlag(Parser& parser, void* val_ptr);
static bool readS32(Parser& parser, void* val_ptr);
static bool readU32(Parser& parser, void* val_ptr);
static bool readF32(Parser& parser, void* val_ptr);
static bool readF64(Parser& parser, void* val_ptr);
static bool readBool(Parser& parser, void* val_ptr);
static bool readString(Parser& parser, void* val_ptr);
static bool readUUID(Parser& parser, void* val_ptr);
static bool readDate(Parser& parser, void* val_ptr);
static bool readURI(Parser& parser, void* val_ptr);
static bool readSD(Parser& parser, void* val_ptr);
Parser::name_stack_t mNameStack;
const LLSD* mCurReadSD;
LLSD* mWriteRootSD;
LLSD* mCurWriteSD;
};
extern LL_COMMON_API LLFastTimer::DeclareTimer FTM_SD_PARAM_ADAPTOR;
template<typename T>
class LLSDParamAdapter : public T
{
public:
LLSDParamAdapter() {}
LLSDParamAdapter(const LLSD& sd)
{
LLFastTimer _(FTM_SD_PARAM_ADAPTOR);
LLParamSDParser parser;
// don't spam for implicit parsing of LLSD, as we want to allow arbitrary freeform data and ignore most of it
bool parse_silently = true;
parser.readSD(sd, *this, parse_silently);
}
operator LLSD() const
{
LLParamSDParser parser;
LLSD sd;
parser.writeSD(sd, *this);
return sd;
}
LLSDParamAdapter(const T& val)
: T(val)
{
T::operator=(val);
}
};
#endif // LL_LLSDPARAM_H
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