poco/JSON/src/Object.cpp

//
// Object.cpp
//
// $Id$
//
// Library: JSON
// Package: JSON
// Module:  Object
//
// Copyright (c) 2012, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// Permission is hereby granted, free of charge, to any person or organization
// obtaining a copy of the software and accompanying documentation covered by
// this license (the "Software") to use, reproduce, display, distribute,
// execute, and transmit the Software, and to prepare derivative works of the
// Software, and to permit third-parties to whom the Software is furnished to
// do so, all subject to the following:
//
// The copyright notices in the Software and this entire statement, including
// the above license grant, this restriction and the following disclaimer,
// must be included in all copies of the Software, in whole or in part, and
// all derivative works of the Software, unless such copies or derivative
// works are solely in the form of machine-executable object code generated by
// a source language processor.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
//


#include "Poco/JSON/Object.h"
#include <iostream>
#include <sstream>


using Poco::Dynamic::Var;


namespace Poco {
namespace JSON {


Object::Object(bool preserveInsertionOrder): _preserveInsOrder(preserveInsertionOrder)
{
}


Object::Object(const Object& copy) : _values(copy._values),
	_keys(copy._keys),
	_preserveInsOrder(copy._preserveInsOrder)
{
}


Object::~Object()
{
}


Var Object::get(const std::string& key) const
{
	Var value;

	ValueMap::const_iterator it = _values.find(key);
	if ( it != _values.end() )
	{
		value = it->second;
	}
	return value;
}


Array::Ptr Object::getArray(const std::string& key) const
{
	Array::Ptr result;

	Var value = get(key);
	if ( value.type() == typeid(Array::Ptr) )
	{
		result = value.extract<Array::Ptr>();
	}
	return result;
}


Object::Ptr Object::getObject(const std::string& key) const
{
	Object::Ptr result;

	Var value = get(key);
	if ( value.type() == typeid(Object::Ptr) )
	{
		result = value.extract<Object::Ptr>();
	}
	return result;
}


void Object::getNames(std::vector<std::string>& names) const
{
	names.clear();
	for(ValueMap::const_iterator it = _values.begin(); it != _values.end(); ++it)
	{
		names.push_back(it->first);
	}
}


void Object::stringify(std::ostream& out, unsigned int indent, int step) const
{
	if (step == -1) step = indent;

	if(!_preserveInsOrder)
		doStringify(_values, out, indent, step);
	else
		doStringify(_keys, out, indent, step);
}


const std::string& Object::getKey(KeyPtrList::const_iterator& iter) const
{
	ValueMap::const_iterator it = _values.begin();
	ValueMap::const_iterator end = _values.end();
	for (; it != end; ++it)
	{
		if (it->second == **iter) return it->first;
	}

	throw NotFoundException((*iter)->convert<std::string>());
}


void Object::set(const std::string& key, const Dynamic::Var& value)
{
	_values[key] = value;
	if (_preserveInsOrder)
	{
		KeyPtrList::iterator it = _keys.begin();
		KeyPtrList::iterator end = _keys.end();
		for (; it != end; ++it)
		{
			if (key == **it) return;
		}
		_keys.push_back(&_values[key]);
	}
}


} } // namespace Poco::JSON