Preserve entries order in DynamicStruct #2410 (#2413)

* Preserve entries order in DynamicStruct #2410

* disable C++11 default

* ifdef C++11 code

Foundation/include/Poco/Dynamic/Struct.h

@@ -22,6 +22,8 @@
 #include "Poco/Dynamic/Var.h"
 #include "Poco/Dynamic/VarHolder.h"
 #include "Poco/SharedPtr.h"
+#include "Poco/OrderedMap.h"
+#include "Poco/OrderedSet.h"
 #include <map>
 #include <set>
 
@@ -30,19 +32,19 @@ namespace Poco {
 namespace Dynamic {
 
 
-template <typename K>
+template <typename K, typename M = std::map<K, Var>, typename S = std::set<K> >
 class Struct
 	/// Struct allows to define a named collection of Var objects.
 {
 public:
-	typedef typename std::map<K, Var> Data;
-	typedef typename std::set<K> NameSet;
+	typedef M Data;
+	typedef S NameSet;
 	typedef typename Data::iterator Iterator;
 	typedef typename Data::const_iterator ConstIterator;
 	typedef typename Struct<K>::Data::value_type ValueType;
 	typedef typename Struct<K>::Data::size_type SizeType;
-	typedef typename std::pair<typename Struct<K>::Iterator, bool> InsRetVal;
-	typedef typename Poco::SharedPtr<Struct<K> > Ptr;
+	typedef typename std::pair<typename Struct<K, M, S>::Iterator, bool> InsRetVal;
+	typedef typename Poco::SharedPtr<Struct<K, M, S> > Ptr;
 
 	Struct(): _data()
 		/// Creates an empty Struct
@@ -57,13 +59,19 @@ public:
 	template <typename T>
 	Struct(const std::map<K, T>& val)
 	{
-		typedef typename std::map<K, T>::const_iterator MapConstIterator;
-
-		MapConstIterator it = val.begin();
-		MapConstIterator end = val.end();
-		for (; it != end; ++it) _data.insert(ValueType(it->first, Var(it->second)));
+		assignMap(val);
 	}
 
+#ifdef POCO_ENABLE_CPP11
+
+	template <typename T>
+	Struct(const OrderedMap<K, T>& val)
+	{
+		assignMap(val);
+	}
+
+#endif // POCO_ENABLE_CPP11
+
 	virtual ~Struct()
 		/// Destroys the Struct.
 	{
@@ -199,15 +207,30 @@ public:
 	}
 
 private:
+	template <typename T>
+	void assignMap(const T& map)
+	{
+		typedef typename T::const_iterator MapConstIterator;
+
+		MapConstIterator it = map.begin();
+		MapConstIterator end = map.end();
+		for (; it != end; ++it) _data.insert(ValueType(it->first, Var(it->second)));
+	}
+
 	Data _data;
 };
 
 
 template <>
-class VarHolderImpl<Struct<std::string> >: public VarHolder
+class VarHolderImpl<Struct<std::string, std::map<std::string, Var>, std::set<std::string> > >: public VarHolder
 {
 public:
-	VarHolderImpl(const Struct<std::string>& val): _val(val)
+	typedef std::string KeyType;
+	typedef std::map<KeyType, Var> MapType;
+	typedef std::set<KeyType> SetType;
+	typedef Struct<KeyType, MapType, SetType> ValueType;
+
+	VarHolderImpl(const ValueType& val): _val(val)
 	{
 	}
 
@@ -217,7 +240,7 @@ public:
 	
 	const std::type_info& type() const
 	{
-		return typeid(Struct<std::string>);
+		return typeid(ValueType);
 	}
 
 	void convert(Int8&) const
@@ -283,8 +306,8 @@ public:
 	void convert(std::string& val) const
 	{
 		val.append("{ ");
-		Struct<std::string>::ConstIterator it = _val.begin();
-		Struct<std::string>::ConstIterator itEnd = _val.end();
+		ValueType::ConstIterator it = _val.begin();
+		ValueType::ConstIterator itEnd = _val.end();
 		if (!_val.empty())
 		{
 			Var key(it->first);
@@ -324,7 +347,7 @@ public:
 		return cloneHolder(pVarHolder, _val);
 	}
 	
-	const Struct<std::string>& value() const
+	const ValueType& value() const
 	{
 		return _val;
 	}
@@ -339,6 +362,11 @@ public:
 		return true;
 	}
 
+	bool isOrdered() const
+	{
+		return false;
+	}
+
 	bool isInteger() const
 	{
 		return false;
@@ -364,26 +392,31 @@ public:
 		return _val.size();
 	}
 
-	Var& operator [] (const std::string& name)
+	Var& operator [] (const KeyType& name)
 	{
 		return _val[name];
 	}
 
-	const Var& operator [] (const std::string& name) const
+	const Var& operator [] (const KeyType& name) const
 	{
 		return _val[name];
 	}
 
 private:
-	Struct<std::string> _val;
+	ValueType _val;
 };
 
 
 template <>
-class VarHolderImpl<Struct<int> >: public VarHolder
+class VarHolderImpl<Struct<int, std::map<int, Var>, std::set<int> > > : public VarHolder
 {
 public:
-	VarHolderImpl(const Struct<int>& val): _val(val)
+	typedef int KeyType;
+	typedef std::map<KeyType, Var> MapType;
+	typedef std::set<KeyType> SetType;
+	typedef Struct<KeyType, MapType, SetType> ValueType;
+
+	VarHolderImpl(const ValueType& val) : _val(val)
 	{
 	}
 
@@ -393,7 +426,7 @@ public:
 
 	const std::type_info& type() const
 	{
-		return typeid(Struct<int>);
+		return typeid(ValueType);
 	}
 
 	void convert(Int8&) const
@@ -459,8 +492,8 @@ public:
 	void convert(std::string& val) const
 	{
 		val.append("{ ");
-		Struct<int>::ConstIterator it = _val.begin();
-		Struct<int>::ConstIterator itEnd = _val.end();
+		ValueType::ConstIterator it = _val.begin();
+		ValueType::ConstIterator itEnd = _val.end();
 		if (!_val.empty())
 		{
 			Var key(it->first);
@@ -500,7 +533,7 @@ public:
 		return cloneHolder(pVarHolder, _val);
 	}
 
-	const Struct<int>& value() const
+	const ValueType& value() const
 	{
 		return _val;
 	}
@@ -515,6 +548,200 @@ public:
 		return true;
 	}
 
+	bool isOrdered() const
+	{
+		return false;
+	}
+
+	bool isInteger() const
+	{
+		return false;
+	}
+
+	bool isSigned() const
+	{
+		return false;
+	}
+
+	bool isNumeric() const
+	{
+		return false;
+	}
+
+	bool isString() const
+	{
+		return false;
+	}
+
+	std::size_t size() const
+	{
+		return _val.size();
+	}
+
+	Var& operator [] (const KeyType& name)
+	{
+		return _val[name];
+	}
+
+	const Var& operator [] (const KeyType& name) const
+	{
+		return _val[name];
+	}
+
+private:
+	ValueType _val;
+};
+
+
+#ifdef POCO_ENABLE_CPP11
+
+
+template <>
+class VarHolderImpl<Struct<std::string, Poco::OrderedMap<std::string, Var>, Poco::OrderedSet<std::string> > > : public VarHolder
+{
+public:
+	typedef std::string KeyType;
+	typedef Poco::OrderedMap<KeyType, Var> MapType;
+	typedef Poco::OrderedSet<KeyType> SetType;
+	typedef Struct<KeyType, MapType, SetType> ValueType;
+
+	VarHolderImpl(const ValueType& val) : _val(val)
+	{
+	}
+
+	~VarHolderImpl()
+	{
+	}
+
+	const std::type_info& type() const
+	{
+		return typeid(ValueType);
+	}
+
+	void convert(Int8&) const
+	{
+		throw BadCastException("Cannot cast Struct type to Int8");
+	}
+
+	void convert(Int16&) const
+	{
+		throw BadCastException("Cannot cast Struct type to Int16");
+	}
+
+	void convert(Int32&) const
+	{
+		throw BadCastException("Cannot cast Struct type to Int32");
+	}
+
+	void convert(Int64&) const
+	{
+		throw BadCastException("Cannot cast Struct type to Int64");
+	}
+
+	void convert(UInt8&) const
+	{
+		throw BadCastException("Cannot cast Struct type to UInt8");
+	}
+
+	void convert(UInt16&) const
+	{
+		throw BadCastException("Cannot cast Struct type to UInt16");
+	}
+
+	void convert(UInt32&) const
+	{
+		throw BadCastException("Cannot cast Struct type to UInt32");
+	}
+
+	void convert(UInt64&) const
+	{
+		throw BadCastException("Cannot cast Struct type to UInt64");
+	}
+
+	void convert(bool&) const
+	{
+		throw BadCastException("Cannot cast Struct type to bool");
+	}
+
+	void convert(float&) const
+	{
+		throw BadCastException("Cannot cast Struct type to float");
+	}
+
+	void convert(double&) const
+	{
+		throw BadCastException("Cannot cast Struct type to double");
+	}
+
+	void convert(char&) const
+	{
+		throw BadCastException("Cannot cast Struct type to char");
+	}
+
+	void convert(std::string& val) const
+	{
+		val.append("{ ");
+		ValueType::ConstIterator it = _val.begin();
+		ValueType::ConstIterator itEnd = _val.end();
+		if (!_val.empty())
+		{
+			Var key(it->first);
+			Impl::appendJSONKey(val, key);
+			val.append(" : ");
+			Impl::appendJSONValue(val, it->second);
+			++it;
+		}
+		for (; it != itEnd; ++it)
+		{
+			val.append(", ");
+			Var key(it->first);
+			Impl::appendJSONKey(val, key);
+			val.append(" : ");
+			Impl::appendJSONValue(val, it->second);
+		}
+		val.append(" }");
+	}
+
+	void convert(Poco::DateTime&) const
+	{
+		throw BadCastException("Struct -> Poco::DateTime");
+	}
+
+	void convert(Poco::LocalDateTime&) const
+	{
+		throw BadCastException("Struct -> Poco::LocalDateTime");
+	}
+
+	void convert(Poco::Timestamp&) const
+	{
+		throw BadCastException("Struct -> Poco::Timestamp");
+	}
+
+	VarHolder* clone(Placeholder<VarHolder>* pVarHolder = 0) const
+	{
+		return cloneHolder(pVarHolder, _val);
+	}
+
+	const ValueType& value() const
+	{
+		return _val;
+	}
+
+	bool isArray() const
+	{
+		return false;
+	}
+
+	bool isStruct() const
+	{
+		return true;
+	}
+
+	bool isOrdered() const
+	{
+		return true;
+	}
+
 	bool isInteger() const
 	{
 		return false;
@@ -540,26 +767,218 @@ public:
 		return _val.size();
 	}
 
-	Var& operator [] (int name)
+	Var& operator [] (const KeyType& name)
 	{
 		return _val[name];
 	}
 
-	const Var& operator [] (int name) const
+	const Var& operator [] (const KeyType& name) const
 	{
 		return _val[name];
 	}
 
 private:
-	Struct<int> _val;
+	ValueType _val;
 };
 
 
+template <>
+class VarHolderImpl<Struct<int, Poco::OrderedMap<int, Var>, Poco::OrderedSet<int> > > : public VarHolder
+{
+public:
+	typedef int KeyType;
+	typedef Poco::OrderedMap<KeyType, Var> MapType;
+	typedef Poco::OrderedSet<KeyType> SetType;
+	typedef Struct<KeyType, MapType, SetType> ValueType;
+
+	VarHolderImpl(const ValueType& val) : _val(val)
+	{
+	}
+
+	~VarHolderImpl()
+	{
+	}
+
+	const std::type_info& type() const
+	{
+		return typeid(ValueType);
+	}
+
+	void convert(Int8&) const
+	{
+		throw BadCastException("Cannot cast Struct type to Int8");
+	}
+
+	void convert(Int16&) const
+	{
+		throw BadCastException("Cannot cast Struct type to Int16");
+	}
+
+	void convert(Int32&) const
+	{
+		throw BadCastException("Cannot cast Struct type to Int32");
+	}
+
+	void convert(Int64&) const
+	{
+		throw BadCastException("Cannot cast Struct type to Int64");
+	}
+
+	void convert(UInt8&) const
+	{
+		throw BadCastException("Cannot cast Struct type to UInt8");
+	}
+
+	void convert(UInt16&) const
+	{
+		throw BadCastException("Cannot cast Struct type to UInt16");
+	}
+
+	void convert(UInt32&) const
+	{
+		throw BadCastException("Cannot cast Struct type to UInt32");
+	}
+
+	void convert(UInt64&) const
+	{
+		throw BadCastException("Cannot cast Struct type to UInt64");
+	}
+
+	void convert(bool&) const
+	{
+		throw BadCastException("Cannot cast Struct type to bool");
+	}
+
+	void convert(float&) const
+	{
+		throw BadCastException("Cannot cast Struct type to float");
+	}
+
+	void convert(double&) const
+	{
+		throw BadCastException("Cannot cast Struct type to double");
+	}
+
+	void convert(char&) const
+	{
+		throw BadCastException("Cannot cast Struct type to char");
+	}
+
+	void convert(std::string& val) const
+	{
+		val.append("{ ");
+		ValueType::ConstIterator it = _val.begin();
+		ValueType::ConstIterator itEnd = _val.end();
+		if (!_val.empty())
+		{
+			Var key(it->first);
+			Impl::appendJSONKey(val, key);
+			val.append(" : ");
+			Impl::appendJSONValue(val, it->second);
+			++it;
+		}
+		for (; it != itEnd; ++it)
+		{
+			val.append(", ");
+			Var key(it->first);
+			Impl::appendJSONKey(val, key);
+			val.append(" : ");
+			Impl::appendJSONValue(val, it->second);
+		}
+		val.append(" }");
+	}
+
+	void convert(Poco::DateTime&) const
+	{
+		throw BadCastException("Struct -> Poco::DateTime");
+	}
+
+	void convert(Poco::LocalDateTime&) const
+	{
+		throw BadCastException("Struct -> Poco::LocalDateTime");
+	}
+
+	void convert(Poco::Timestamp&) const
+	{
+		throw BadCastException("Struct -> Poco::Timestamp");
+	}
+
+	VarHolder* clone(Placeholder<VarHolder>* pVarHolder = 0) const
+	{
+		return cloneHolder(pVarHolder, _val);
+	}
+
+	const ValueType& value() const
+	{
+		return _val;
+	}
+
+	bool isArray() const
+	{
+		return false;
+	}
+
+	bool isStruct() const
+	{
+		return true;
+	}
+
+	bool isOrdered() const
+	{
+		return true;
+	}
+
+	bool isInteger() const
+	{
+		return false;
+	}
+
+	bool isSigned() const
+	{
+		return false;
+	}
+
+	bool isNumeric() const
+	{
+		return false;
+	}
+
+	bool isString() const
+	{
+		return false;
+	}
+
+	std::size_t size() const
+	{
+		return _val.size();
+	}
+
+	Var& operator [] (const KeyType& name)
+	{
+		return _val[name];
+	}
+
+	const Var& operator [] (const KeyType& name) const
+	{
+		return _val[name];
+	}
+
+private:
+	ValueType _val;
+};
+
+
+#endif // POCO_ENABLE_CPP11
+
+
 } // namespace Dynamic
 
 
 typedef Dynamic::Struct<std::string> DynamicStruct;
 
+#ifdef POCO_ENABLE_CPP11
+typedef Dynamic::Struct<std::string, Poco::OrderedMap<std::string, Dynamic::Var>, Poco::OrderedSet<std::string> > OrderedDynamicStruct;
+#endif // POCO_ENABLE_CPP11
 
 } // namespace Poco
 

Foundation/include/Poco/Dynamic/Var.h

@@ -21,16 +21,20 @@
 #include "Poco/Foundation.h"
 #include "Poco/Format.h"
 #include "Poco/SharedPtr.h"
+#include "Poco/OrderedMap.h"
+#include "Poco/OrderedSet.h"
 #include "Poco/Dynamic/VarHolder.h"
 #include "Poco/Dynamic/VarIterator.h"
 #include <typeinfo>
+#include <map>
+#include <set>
 
 
 namespace Poco {
 namespace Dynamic {
 
 
-template <typename T>
+template <typename K, typename M, typename S>
 class Struct;
 
 
@@ -449,6 +453,10 @@ public:
 	bool isStruct() const;
 		/// Returns true if Var represents a struct.
 
+	bool isOrdered() const;
+		/// Returns true if Var represents an ordered struct,
+		/// false if struct is sorted.
+
 	char& at(std::size_t n);
 		/// Returns character at position n. This function only works with
 		/// Var containing a std::string.
@@ -595,7 +603,11 @@ private:
 			throw E(errorMessage);
 	}
 
-	Var& structIndexOperator(VarHolderImpl<Struct<int> >* pStr, int n) const;
+	template <typename T, typename N>
+	Var& structIndexOperator(T* pStr, N n) const
+	{
+		return pStr->operator[](n);
+	}
 
 #ifdef POCO_NO_SOO
 
@@ -822,6 +834,13 @@ inline bool Var::isStruct() const
 }
 
 
+inline bool Var::isOrdered() const
+{
+	VarHolder* pHolder = content();
+	return pHolder ? pHolder->isOrdered() : false;
+}
+
+
 inline bool Var::isInteger() const
 {
 	VarHolder* pHolder = content();

Foundation/include/Poco/Dynamic/VarHolder.h

@@ -241,6 +241,10 @@ public:
 		/// Returns false. Must be properly overriden in a type
 		/// specialization in order to support the diagnostic.
 
+	virtual bool isOrdered() const;
+		/// Returns false. Must be properly overriden in a type
+		/// specialization in order to support the diagnostic.
+
 	virtual bool isInteger() const;
 		/// Returns false. Must be properly overriden in a type
 		/// specialization in order to support the diagnostic.
@@ -612,6 +616,13 @@ inline bool VarHolder::isStruct() const
 	return false;
 }
 
+
+inline bool VarHolder::isOrdered() const
+{
+	return false;
+}
+
+
 inline bool VarHolder::isInteger() const
 {
 	return false;

Foundation/include/Poco/SharedPtr.h

@@ -113,6 +113,8 @@ class SharedPtr
 	/// is required.
 {
 public:
+	typedef C Type;
+
 	SharedPtr(): _pCounter(new RC), _ptr(0)
 	{
 	}

Foundation/src/Var.cpp

@@ -362,8 +362,16 @@ Var& Var::getAt(std::size_t n)
 		return holderImpl<std::deque<Var>,
 			InvalidAccessException>("Not a deque.")->operator[](n);
 	else if (isStruct())
-		return structIndexOperator(holderImpl<Struct<int>,
+	{
+#ifdef POCO_ENABLE_CPP11
+		if (isOrdered())
+			return structIndexOperator(holderImpl<Struct<int, OrderedMap<int, Var>, OrderedSet<int> >,
 				InvalidAccessException>("Not a struct."), static_cast<int>(n));
+		else
+#endif // POCO_ENABLE_CPP11
+			return structIndexOperator(holderImpl<Struct<int, std::map<int, Var>, std::set<int> >,
+				InvalidAccessException>("Not a struct."), static_cast<int>(n));
+	}
 	else if (!isString() && !isEmpty() && (n == 0))
 		return *this;
 	
@@ -385,8 +393,17 @@ char& Var::at(std::size_t n)
 
 Var& Var::getAt(const std::string& name)
 {
-	return holderImpl<DynamicStruct,
-		InvalidAccessException>("Not a struct.")->operator[](name);
+	if (isStruct())
+	{
+#ifdef POCO_ENABLE_CPP11
+		if (isOrdered())
+			return structIndexOperator(holderImpl<OrderedDynamicStruct, InvalidAccessException>("Not a struct."), name);
+		else
+#endif // POCO_ENABLE_CPP11
+			return structIndexOperator(holderImpl<DynamicStruct, InvalidAccessException>("Not a struct."), name);
+	}
+
+	throw InvalidAccessException("Not a struct.");
 }
 
 
@@ -626,11 +643,11 @@ std::string Var::toString(const Var& any)
 	return res;
 }
 
-
+/*
 Var& Var::structIndexOperator(VarHolderImpl<Struct<int> >* pStr, int n) const
 {
 	return pStr->operator[](n);
 }
-
+*/
 
 } } // namespace Poco::Dynamic

Foundation/src/VarIterator.cpp

@@ -14,7 +14,7 @@
 
 #include "Poco/Dynamic/VarIterator.h"
 #include "Poco/Dynamic/Var.h"
-#include "Poco/Dynamic/Struct.h"
+//#include "Poco/Dynamic/Struct.h"
 #undef min
 #undef max
 #include <limits>

Foundation/testsuite/src/VarTest.cpp

@@ -20,7 +20,6 @@
 #include <utility>
 
 
-
 #if defined(_MSC_VER) && _MSC_VER < 1400
 	#pragma warning(disable:4800)//forcing value to bool 'true' or 'false'
 #endif
@@ -2256,6 +2255,34 @@ void VarTest::testDynamicStructBasics()
 }
 
 
+void VarTest::testOrderedDynamicStructBasics()
+{
+#ifdef POCO_ENABLE_CPP11
+	OrderedDynamicStruct aStruct;
+	assertTrue(aStruct.empty());
+	assertTrue(aStruct.size() == 0);
+	assertTrue(aStruct.members().empty());
+
+	aStruct.insert("First Name", "Little");
+	assertTrue(!aStruct.empty());
+	assertTrue(aStruct.size() == 1);
+	assertTrue(*(aStruct.members().begin()) == "First Name");
+	assertTrue(aStruct["First Name"] == "Little");
+	aStruct.insert("Last Name", "POCO");
+	assertTrue(aStruct.members().size() == 2);
+	aStruct.erase("First Name");
+	assertTrue(aStruct.size() == 1);
+	assertTrue(*(aStruct.members().begin()) == "Last Name");
+	aStruct.insert("Age", 1);
+	assertTrue(aStruct["Age"] == 1);
+	assertTrue(aStruct.members().size() == 2);
+	assertTrue(*(aStruct.members().begin()) == "Last Name");
+	aStruct.clear();
+	assertTrue(aStruct.size() == 0);
+#endif // POCO_ENABLE_CPP11
+}
+
+
 void VarTest::testDynamicStructString()
 {
 	DynamicStruct aStruct;
@@ -2290,6 +2317,45 @@ void VarTest::testDynamicStructString()
 }
 
 
+void VarTest::testOrderedDynamicStructString()
+{
+#ifdef POCO_ENABLE_CPP11
+	OrderedDynamicStruct aStruct;
+	aStruct["First Name"] = "Junior";
+	aStruct["Last Name"] = "POCO";
+	Var a1(aStruct);
+	assertTrue(a1["First Name"] == "Junior");
+	assertTrue(a1["Last Name"] == "POCO");
+	a1["First Name"] = "Senior";
+	assertTrue(a1["First Name"] == "Senior");
+	testGetIdxMustThrow(a1, 0);
+
+	typedef Struct<std::string, OrderedMap<std::string, Var>, OrderedSet<std::string> > OrderedStruct;
+	OrderedStruct s1;
+	s1["1"] = 1;
+	s1["2"] = 2;
+	s1["3"] = 3;
+
+	OrderedStruct s2(s1);
+	assertTrue(s2["1"] == 1);
+	assertTrue(s2["2"] == 2);
+	assertTrue(s2["3"] == 3);
+
+	OrderedMap<std::string, int> m1;
+	m1["2"] = 2;
+	m1["1"] = 1;
+	m1["3"] = 3;
+	assertTrue (m1.begin()->first == "2");
+	assertTrue(m1.begin()->second == 2);
+
+	OrderedStruct m2(m1);
+	assertTrue(m2["1"] == 1);
+	assertTrue(m2["2"] == 2);
+	assertTrue(m2["3"] == 3);
+#endif // POCO_ENABLE_CPP11
+}
+
+
 void VarTest::testDynamicStructInt()
 {
 	Dynamic::Struct<int> aStruct;
@@ -2325,6 +2391,47 @@ void VarTest::testDynamicStructInt()
 }
 
 
+void VarTest::testOrderedDynamicStructInt()
+{
+#ifdef POCO_ENABLE_CPP11
+	typedef Struct<int, OrderedMap<int, Var>, OrderedSet<int> > OrderedStruct;
+	OrderedStruct aStruct;
+	aStruct[0] = "POCO";
+	aStruct[1] = "Junior";
+	aStruct[2] = 100;
+	aStruct[3] = 10;
+
+	Var a1(aStruct);
+	assertTrue(a1[0] == "POCO");
+	assertTrue(a1[1] == "Junior");
+	assertTrue(a1[2] == 100);
+	assertTrue(a1[3] == 10);
+	a1[0] = "Senior";
+	assertTrue(a1[0] == "Senior");
+
+	OrderedStruct s1;
+	s1[1] = "1";
+	s1[2] = "2";
+	s1[3] = "3";
+
+	OrderedStruct s2(s1);
+	assertTrue(s2[1] == "1");
+	assertTrue(s2[2] == "2");
+	assertTrue(s2[3] == "3");
+
+	OrderedMap<int, std::string> m1;
+	m1[1] = "2";
+	m1[2] = "1";
+	m1[3] = "3";
+
+	OrderedStruct m2(m1);
+	assertTrue(m2[1] == "2");
+	assertTrue(m2[2] == "1");
+	assertTrue(m2[3] == "3");
+#endif // POCO_ENABLE_CPP11
+}
+
+
 void VarTest::testDynamicPair()
 {
 	Pair<int> aPair;
@@ -2414,6 +2521,22 @@ void VarTest::testStructToString()
 }
 
 
+void VarTest::testOrderedStructToString()
+{
+#ifdef POCO_ENABLE_CPP11
+	OrderedDynamicStruct aStruct;
+	aStruct["First Name"] = "Junior";
+	aStruct["Last Name"] = "POCO";
+	aStruct["Age"] = 1;
+	Var a1(aStruct);
+	std::string res = a1.convert<std::string>();
+	std::string expected = "{ \"First Name\" : \"Junior\", \"Last Name\" : \"POCO\", \"Age\" : 1 }";
+	assertTrue(res == expected);
+	assertTrue(aStruct.toString() == res);
+#endif // POCO_ENABLE_CPP11
+}
+
+
 void VarTest::testStructToStringEscape()
 {
 	DynamicStruct aStruct;
@@ -2959,11 +3082,15 @@ CppUnit::Test* VarTest::suite()
 	CppUnit_addTest(pSuite, VarTest, testArrayIdxOperator);
 	CppUnit_addTest(pSuite, VarTest, testDynamicPair);
 	CppUnit_addTest(pSuite, VarTest, testDynamicStructBasics);
+	CppUnit_addTest(pSuite, VarTest, testOrderedDynamicStructBasics);
 	CppUnit_addTest(pSuite, VarTest, testDynamicStructString);
+	CppUnit_addTest(pSuite, VarTest, testOrderedDynamicStructString);
 	CppUnit_addTest(pSuite, VarTest, testDynamicStructInt);
+	CppUnit_addTest(pSuite, VarTest, testOrderedDynamicStructInt);
 	CppUnit_addTest(pSuite, VarTest, testArrayToString);
 	CppUnit_addTest(pSuite, VarTest, testArrayToStringEscape);
 	CppUnit_addTest(pSuite, VarTest, testStructToString);
+	CppUnit_addTest(pSuite, VarTest, testOrderedStructToString);
 	CppUnit_addTest(pSuite, VarTest, testStructToStringEscape);
 	CppUnit_addTest(pSuite, VarTest, testArrayOfStructsToString);
 	CppUnit_addTest(pSuite, VarTest, testStructWithArraysToString);

Foundation/testsuite/src/VarTest.h

@@ -55,11 +55,15 @@ public:
 	void testArrayIdxOperator();
 	void testDynamicPair();
 	void testDynamicStructBasics();
+	void testOrderedDynamicStructBasics();
 	void testDynamicStructString();
+	void testOrderedDynamicStructString();
 	void testDynamicStructInt();
+	void testOrderedDynamicStructInt();
 	void testArrayToString();
 	void testArrayToStringEscape();
 	void testStructToString();
+	void testOrderedStructToString();
 	void testStructToStringEscape();
 	void testArrayOfStructsToString();
 	void testStructWithArraysToString();

JSON/include/Poco/JSON/Object.h

@@ -224,6 +224,16 @@ public:
 	static Poco::DynamicStruct makeStruct(const Object::Ptr& obj);
 		/// Utility function for creation of struct.
 
+#ifdef POCO_ENABLE_CPP11
+
+	static Poco::OrderedDynamicStruct makeOrderedStruct(const Object::Ptr& obj);
+		/// Utility function for creation of ordered struct.
+
+	operator const Poco::OrderedDynamicStruct& () const;
+		/// Cast operator to Poco::OrderedDynamiStruct.
+
+#endif // POCO_ENABLE_CPP11
+
 	operator const Poco::DynamicStruct& () const;
 		/// Cast operator to Poco::DynamiStruct.
 
@@ -235,10 +245,21 @@ public:
 private:
 	typedef std::deque<ValueMap::const_iterator>  KeyList;
 	typedef Poco::DynamicStruct::Ptr              StructPtr;
+#ifdef POCO_ENABLE_CPP11
+	typedef Poco::OrderedDynamicStruct::Ptr       OrdStructPtr;
+#endif // POCO_ENABLE_CPP11
 
-	void resetDynStruct() const;
 	void syncKeys(const KeyList& keys);
 
+	template <typename T>
+	void resetDynStruct(T& pStruct) const
+	{
+		if (!pStruct)
+			pStruct = new typename T::Type;
+		else
+			pStruct->clear();
+	}
+
 	template <typename C>
 	void doStringify(const C& container, std::ostream& out, unsigned int indent, unsigned int step) const
 	{
@@ -272,6 +293,59 @@ private:
 		out << '}';
 	}
 
+	template <typename S>
+	static S makeStructImpl(const Object::Ptr& obj)
+	{
+		S ds;
+
+		if (obj->_preserveInsOrder)
+		{
+			KeyList::const_iterator it = obj->_keys.begin();
+			KeyList::const_iterator end = obj->_keys.end();
+			for (; it != end; ++it)
+			{
+				if (obj->isObject((*it)->first))
+				{
+					Object::Ptr pObj = obj->getObject((*it)->first);
+					S str = makeStructImpl<S>(pObj);
+					ds.insert((*it)->first, str);
+				}
+				else if (obj->isArray((*it)->first))
+				{
+					Array::Ptr pArr = obj->getArray((*it)->first);
+					std::vector<Poco::Dynamic::Var> v = Poco::JSON::Array::makeArray(pArr);
+					ds.insert((*it)->first, v);
+				}
+				else
+					ds.insert((*it)->first, (*it)->second);
+			}
+		}
+		else
+		{
+			ConstIterator it = obj->begin();
+			ConstIterator end = obj->end();
+			for (; it != end; ++it)
+			{
+				if (obj->isObject(it))
+				{
+					Object::Ptr pObj = obj->getObject(it->first);
+					S str = makeStructImpl<S>(pObj);
+					ds.insert(it->first, str);
+				}
+				else if (obj->isArray(it))
+				{
+					Array::Ptr pArr = obj->getArray(it->first);
+					std::vector<Poco::Dynamic::Var> v = Poco::JSON::Array::makeArray(pArr);
+					ds.insert(it->first, v);
+				}
+				else
+					ds.insert(it->first, it->second);
+			}
+		}
+
+		return ds;
+	}
+
 	const std::string& getKey(ValueMap::const_iterator& it) const;
 	const Dynamic::Var& getValue(ValueMap::const_iterator& it) const;
 	const std::string& getKey(KeyList::const_iterator& it) const;
@@ -286,6 +360,9 @@ private:
 	//  so it must know whether to escape unicode or not.
 	bool              _escapeUnicode;
 	mutable StructPtr    _pStruct;
+#ifdef POCO_ENABLE_CPP11
+	mutable OrdStructPtr _pOrdStruct;
+#endif // POCO_ENABLE_CPP11
 	mutable bool         _modified;
 };
 

JSON/src/Object.cpp

@@ -220,52 +220,51 @@ Object& Object::set(const std::string& key, const Dynamic::Var& value)
 
 Poco::DynamicStruct Object::makeStruct(const Object::Ptr& obj)
 {
-	Poco::DynamicStruct ds;
+	return makeStructImpl<Poco::DynamicStruct>(obj);
+}
 
-	ConstIterator it  = obj->begin();
-	ConstIterator end = obj->end();
-	for (; it != end; ++it)
+
+#ifdef POCO_ENABLE_CPP11
+
+
+Poco::OrderedDynamicStruct Object::makeOrderedStruct(const Object::Ptr& obj)
 {
-		if (obj->isObject(it))
-		{
-			Object::Ptr pObj = obj->getObject(it->first);
-			DynamicStruct str = makeStruct(pObj);
-			ds.insert(it->first, str);
+	return makeStructImpl<Poco::OrderedDynamicStruct>(obj);
 }
-		else if (obj->isArray(it))
+
+/*
+void Object::resetOrdDynStruct() const
 {
-			Array::Ptr pArr = obj->getArray(it->first);
-			std::vector<Poco::Dynamic::Var> v = Poco::JSON::Array::makeArray(pArr);
-			ds.insert(it->first, v);
-		}
+	if (!_pOrdStruct)
+		_pOrdStruct = new Poco::OrderedDynamicStruct;
 	else
-			ds.insert(it->first, it->second);
-	}
-
-	return ds;
+		_pOrdStruct->clear();
 }
+*/
 
+#endif // POCO_ENABLE_CPP11
 
+/*
 void Object::resetDynStruct() const
 {
 	if (!_pStruct)
 		_pStruct = new Poco::DynamicStruct;
 	else
 		_pStruct->clear();
-}
+}*/
 
 
 Object::operator const Poco::DynamicStruct& () const
 {
 	if (!_values.size())
 	{
-		resetDynStruct();
+		resetDynStruct(_pStruct);
 	}
 	else if (_modified)
 	{
 		ValueMap::const_iterator it = _values.begin();
 		ValueMap::const_iterator end = _values.end();
-		resetDynStruct();
+		resetDynStruct(_pStruct);
 		for (; it != end; ++it)
 		{
 			if (isObject(it))
@@ -287,6 +286,68 @@ Object::operator const Poco::DynamicStruct& () const
 }
 
 
+#ifdef POCO_ENABLE_CPP11
+
+
+Object::operator const Poco::OrderedDynamicStruct& () const
+{
+	if (!_values.size())
+	{
+		resetDynStruct(_pOrdStruct);
+	}
+	else if (_modified)
+	{
+		if (_preserveInsOrder)
+		{
+			KeyList::const_iterator it = _keys.begin();
+			KeyList::const_iterator end = _keys.end();
+			resetDynStruct(_pOrdStruct);
+			for (; it != end; ++it)
+			{
+				if (isObject((*it)->first))
+				{
+					_pOrdStruct->insert((*it)->first, makeOrderedStruct(getObject((*it)->first)));
+				}
+				else if (isArray((*it)->first))
+				{
+					_pOrdStruct->insert((*it)->first, Poco::JSON::Array::makeArray(getArray((*it)->first)));
+				}
+				else
+				{
+					_pOrdStruct->insert((*it)->first, (*it)->second);
+				}
+			}
+		}
+		else
+		{
+			ValueMap::const_iterator it = _values.begin();
+			ValueMap::const_iterator end = _values.end();
+			resetDynStruct(_pOrdStruct);
+			for (; it != end; ++it)
+			{
+				if (isObject(it))
+				{
+					_pOrdStruct->insert(it->first, makeOrderedStruct(getObject(it->first)));
+				}
+				else if (isArray(it))
+				{
+					_pOrdStruct->insert(it->first, Poco::JSON::Array::makeArray(getArray(it->first)));
+				}
+				else
+				{
+					_pOrdStruct->insert(it->first, it->second);
+				}
+			}
+		}
+	}
+
+	return *_pOrdStruct;
+}
+
+
+#endif // POCO_ENABLE_CPP11
+
+
 void Object::clear()
 {
 	_values.clear();

JSON/testsuite/src/JSONTest.cpp

@@ -1587,7 +1587,6 @@ void JSONTest::testStringifyPreserveOrder()
 	std::ostringstream ostr;
 
 	Stringifier::condense(result, ostr);
-	std::cout << ostr.str() << std::endl;
 	assertTrue (ostr.str() == "{\"Simpsons\":{\"husband\":{\"name\":\"Homer\",\"age\":38},\"wife\":{\"name\":\"Marge\",\"age\":36},"
 						"\"children\":[\"Bart\",\"Lisa\",\"Maggie\"],"
 						"\"address\":{\"number\":742,\"street\":\"Evergreen Terrace\",\"town\":\"Springfield\"}}}");
@@ -1674,7 +1673,12 @@ void JSONTest::testStringifyPreserveOrder()
 						"}");
 
 	Poco::DynamicStruct ds = *result.extract<Object::Ptr>();
+	assertTrue(ds.toString() == "{ \"Simpsons\" : { \"address\" : { \"number\" : 742, \"street\" : \"Evergreen Terrace\", \"town\" : \"Springfield\" }, "
+		"\"children\" : [ \"Bart\", \"Lisa\", \"Maggie\" ], "
+		"\"husband\" : { \"age\" : 38, \"name\" : \"Homer\" }, "
+		"\"wife\" : { \"age\" : 36, \"name\" : \"Marge\" } } }");
 	assertTrue (ds["Simpsons"].isStruct());
+	assertFalse(ds["Simpsons"].isOrdered());
 	assertTrue (ds["Simpsons"]["husband"].isStruct());
 	assertTrue (ds["Simpsons"]["husband"]["name"] == "Homer");
 	assertTrue (ds["Simpsons"]["husband"]["age"] == 38);
@@ -1692,6 +1696,17 @@ void JSONTest::testStringifyPreserveOrder()
 	assertTrue (ds["Simpsons"]["address"]["number"] == 742);
 	assertTrue (ds["Simpsons"]["address"]["street"] == "Evergreen Terrace");
 	assertTrue (ds["Simpsons"]["address"]["town"] == "Springfield");
+
+#ifdef POCO_ENABLE_CPP11
+	Poco::OrderedDynamicStruct ods = *result.extract<Object::Ptr>();
+	assertTrue(ods["Simpsons"].isStruct());
+	assertTrue(ods["Simpsons"].isOrdered());
+	assertTrue(ods.toString() == "{ \"Simpsons\" : { \"husband\" : { \"name\" : \"Homer\", \"age\" : 38 }, "
+		"\"wife\" : { \"name\" : \"Marge\", \"age\" : 36 }, "
+		"\"children\" : [ \"Bart\", \"Lisa\", \"Maggie\" ], "
+		"\"address\" : { \"number\" : 742, \"street\" : \"Evergreen Terrace\", "
+		"\"town\" : \"Springfield\" } } }");
+#endif // POCO_ENABLE_CPP11
 }