[SF 2520679] JSON strings enclosed in single quotes

[SF 2520849] Dynamic/Pair support

Foundation/Foundation_vs71.vcproj

@@ -3653,6 +3653,11 @@
 					RelativePath=".\include\Poco\DynamicStruct.h"
 					>
 				</File>
+				<File
+					RelativePath=".\include\Poco\Dynamic\Pair.h"
+					>
+				</File>
+
 				<File
 					RelativePath=".\include\Poco\Dynamic\Struct.h"
 					>

Foundation/Foundation_vs80.vcproj

@@ -4741,6 +4741,10 @@
 					RelativePath=".\include\Poco\DynamicStruct.h"
 					>
 				</File>
+				<File
+					RelativePath=".\include\Poco\Dynamic\Pair.h"
+					>
+				</File>
 				<File
 					RelativePath=".\include\Poco\Dynamic\Struct.h"
 					>

Foundation/Foundation_vs90.vcproj

@@ -4732,6 +4732,10 @@
 					RelativePath=".\include\Poco\DynamicStruct.h"
 					>
 				</File>
+				<File
+					RelativePath=".\include\Poco\Dynamic\Pair.h"
+					>
+				</File>
 				<File
 					RelativePath=".\include\Poco\Dynamic\Struct.h"
 					>

Foundation/include/Poco/Dynamic/Pair.h

@@ -0,0 +1,427 @@
+//
+// Pair.h
+//
+// $Id: //poco/Main/Foundation/include/Poco/Dynamic/Pair.h#9 $
+//
+// Library: Foundation
+// Package: Dynamic
+// Module:  Pair
+//
+// Definition of the Pair class.
+//
+// Copyright (c) 2007, 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.
+//
+
+
+#ifndef Foundation_Pair_INCLUDED
+#define Foundation_Pair_INCLUDED
+
+
+#include "Poco/Foundation.h"
+#include "Poco/Dynamic/Var.h"
+#include "Poco/Dynamic/VarHolder.h"
+#include <utility>
+
+
+namespace Poco {
+namespace Dynamic {
+
+
+template <typename K>
+class Pair
+	/// Pair allows to define a pair of values.
+{
+public:
+	typedef typename std::pair<K, Var> Data;
+
+	Pair(): _data()
+		/// Creates an empty Pair
+	{
+	}
+
+	Pair(const Pair& other): _data(other._data)
+		/// Creates the Pair from another pair.
+	{
+	}
+
+	Pair(const Data& val): _data(val)
+		/// Creates the Pair from the given value.
+	{
+	}
+
+	template <typename T>
+	Pair(const std::pair<K, T>& val): _data(std::make_pair(val.first, Var(val.second)))
+		/// Creates Pair form standard pair.
+	{
+	}
+
+	template <typename T>
+	Pair(const K& first, const T& second): _data(std::make_pair(first, Var(second)))
+		/// Creates pair from two values.
+	{
+	}
+
+	virtual ~Pair()
+		/// Destroys the Pair.
+	{
+	}
+
+	Pair& swap(Pair& other)
+		/// Swaps the content of the two Pairs.
+	{
+		std::swap(_data, other._data);
+		return *this;
+	}
+
+	Pair& operator = (const Pair& other)
+		/// Copy constructs Pair from another pair.
+	{
+		Pair(other).swap(*this);
+		return *this;
+	}
+
+	inline const K& first() const
+		/// Returns the first member of the pair.
+	{
+		return _data.first;
+	}
+
+	inline const Var& second() const
+		/// Returns the second member of the pair.
+	{
+		return _data.second;
+	}
+
+private:
+	Data _data;
+};
+
+
+template <>
+class VarHolderImpl<Pair<std::string> >: public VarHolder
+{
+public:
+	VarHolderImpl(const Pair<std::string>& val): _val(val)
+	{
+	}
+
+	~VarHolderImpl()
+	{
+	}
+	
+	const std::type_info& type() const
+	{
+		return typeid(Pair<std::string>);
+	}
+
+	void convert(Int8& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to Int8");
+	}
+
+	void convert(Int16& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to Int16");
+	}
+	
+	void convert(Int32& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to Int32");
+	}
+
+	void convert(Int64& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to Int64");
+	}
+
+	void convert(UInt8& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to UInt8");
+	}
+
+	void convert(UInt16& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to UInt16");
+	}
+	
+	void convert(UInt32& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to UInt32");
+	}
+
+	void convert(UInt64& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to UInt64");
+	}
+
+	void convert(bool& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to bool");
+	}
+
+	void convert(float& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to float");
+	}
+
+	void convert(double& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to double");
+	}
+
+	void convert(char& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to char");
+	}
+
+	void convert(std::string& val) const
+	{
+		// Serialize in JSON format: equals an object
+		// JSON format definition: { string ':' value } string:value pair n-times, sep. by ','
+		val.append("{ ");
+		Var key(_val.first());
+		appendJSONString(val, key);
+		val.append(" : ");
+		appendJSONString(val, _val.second());
+		val.append(" }");	
+	}
+
+	void convert(Poco::DateTime&) const
+	{
+		throw BadCastException("Pair -> Poco::DateTime");
+	}
+
+	void convert(Poco::LocalDateTime&) const
+	{
+		throw BadCastException("Pair -> Poco::LocalDateTime");
+	}
+
+	void convert(Poco::Timestamp&) const
+	{
+		throw BadCastException("Pair -> Poco::Timestamp");
+	}
+
+	VarHolder* clone() const
+	{
+		return new VarHolderImpl(_val);
+	}
+	
+	const Pair<std::string>& value() const
+	{
+		return _val;
+	}
+
+	bool isArray() const
+	{
+		return false;
+	}
+
+	bool isStruct() const
+	{
+		return false;
+	}
+
+	bool isInteger() const
+	{
+		return false;
+	}
+
+	bool isSigned() const
+	{
+		return false;
+	}
+
+	bool isNumeric() const
+	{
+		return false;
+	}
+
+	bool isString() const
+	{
+		return false;
+	}
+
+private:
+	Pair<std::string> _val;
+};
+
+
+template <>
+class VarHolderImpl<Pair<int> >: public VarHolder
+{
+public:
+	VarHolderImpl(const Pair<int>& val): _val(val)
+	{
+	}
+
+	~VarHolderImpl()
+	{
+	}
+	
+	const std::type_info& type() const
+	{
+		return typeid(Pair<int>);
+	}
+
+	void convert(Int8& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to Int8");
+	}
+
+	void convert(Int16& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to Int16");
+	}
+	
+	void convert(Int32& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to Int32");
+	}
+
+	void convert(Int64& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to Int64");
+	}
+
+	void convert(UInt8& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to UInt8");
+	}
+
+	void convert(UInt16& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to UInt16");
+	}
+	
+	void convert(UInt32& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to UInt32");
+	}
+
+	void convert(UInt64& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to UInt64");
+	}
+
+	void convert(bool& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to bool");
+	}
+
+	void convert(float& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to float");
+	}
+
+	void convert(double& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to double");
+	}
+
+	void convert(char& val) const
+	{
+		throw BadCastException("Cannot cast Pair type to char");
+	}
+
+	void convert(std::string& val) const
+	{
+		// Serialize in JSON format: equals an object
+		// JSON format definition: { string ':' value } string:value pair n-times, sep. by ','
+		val.append("{ ");
+		Var key(_val.first());
+		appendJSONString(val, key);
+		val.append(" : ");
+		appendJSONString(val, _val.second());
+		val.append(" }");	
+	}
+
+	void convert(Poco::DateTime&) const
+	{
+		throw BadCastException("Pair -> Poco::DateTime");
+	}
+
+	void convert(Poco::LocalDateTime&) const
+	{
+		throw BadCastException("Pair -> Poco::LocalDateTime");
+	}
+
+	void convert(Poco::Timestamp&) const
+	{
+		throw BadCastException("Pair -> Poco::Timestamp");
+	}
+
+	VarHolder* clone() const
+	{
+		return new VarHolderImpl(_val);
+	}
+	
+	const Pair<int>& value() const
+	{
+		return _val;
+	}
+
+	bool isArray() const
+	{
+		return false;
+	}
+
+	bool isStruct() const
+	{
+		return false;
+	}
+
+	bool isInteger() const
+	{
+		return false;
+	}
+
+	bool isSigned() const
+	{
+		return false;
+	}
+
+	bool isNumeric() const
+	{
+		return false;
+	}
+
+	bool isString() const
+	{
+		return false;
+	}
+
+private:
+	Pair<int> _val;
+};
+
+
+} // namespace Dynamic
+
+
+} // namespace Poco
+
+
+#endif // Foundation_Pair_INCLUDED

Foundation/include/Poco/Dynamic/Struct.h

@@ -1,7 +1,7 @@
 //
 // Struct.h
 //
-// $Id: //poco/Main/Foundation/include/Poco/Struct.h#9 $
+// $Id: //poco/Main/Foundation/include/Poco/Dynamic/Struct.h#9 $
 //
 // Library: Foundation
 // Package: Dynamic
@@ -69,7 +69,7 @@ public:
 	{
 	}
 
-	Struct(const Data &val): _data(val)
+	Struct(const Data& val): _data(val)
 		/// Creates the Struct from the given value.
 	{
 	}
@@ -286,9 +286,6 @@ public:
 
 	void convert(std::string& val) const
 	{
-		// Serialize in JSON format: equals an object
-
-		// JSON format definition: { string ':' value } string:value pair n-times, sep. by ','
 		val.append("{ ");
 		Struct<std::string>::ConstIterator it = _val.begin();
 		Struct<std::string>::ConstIterator itEnd = _val.end();
@@ -460,9 +457,6 @@ public:
 
 	void convert(std::string& val) const
 	{
-		// Serialize in JSON format: equals an object
-
-		// JSON format definition: { string ':' value } string:value pair n-times, sep. by ','
 		val.append("{ ");
 		Struct<int>::ConstIterator it = _val.begin();
 		Struct<int>::ConstIterator itEnd = _val.end();

Foundation/include/Poco/Dynamic/Var.h

@@ -53,7 +53,6 @@ namespace Dynamic {
 template <typename T>
 class Struct;
 
-
 class Foundation_API Var
 	/// Var allows to store data of different types and to convert between these types transparently.
 	/// Var puts forth the best effort to provide intuitive and reasonable conversion semantics and prevent 

Foundation/include/Poco/Dynamic/VarHolder.h

@@ -65,6 +65,9 @@ namespace Dynamic {
 class Var;
 
 
+bool Foundation_API isJSONString(const Var& any);
+	/// Returns true for values that should be JSON-formatted as string.
+
 void Foundation_API appendJSONString(std::string& val, const Var& any);
 	/// Converts the any to a JSON value and adds it to val
 

Foundation/src/Var.cpp

@@ -423,12 +423,12 @@ Var Var::parseArray(const std::string& val, std::string::size_type& pos)
 
 std::string Var::parseString(const std::string& val, std::string::size_type& pos)
 {
-	static const std::string STR_STOP("'\"");
+	static const std::string STR_STOP("\"");
 	static const std::string OTHER_STOP(" ,]}"); // we stop at space, ',', ']' or '}'
 
 	bool inString = false;
 	//skip optional ' "
-	if (val[pos] == '\'' || val[pos] == '"')
+	if (val[pos] == '"')
 	{
 		inString = true;
 		++pos;

Foundation/src/VarHolder.cpp

@@ -52,17 +52,24 @@ VarHolder::~VarHolder()
 }
 
 
+bool isJSONString(const Var& any)
+{
+	return any.type() == typeid(std::string) || 
+		any.type() == typeid(char) || 
+		any.type() == typeid(Poco::DateTime) || 
+		any.type() == typeid(Poco::LocalDateTime);
+}
+
+
 void appendJSONString(std::string& val, const Var& any)
 {
-	bool isJsonString = (any.type() == typeid(std::string) || any.type() == typeid(char) || any.type() == typeid(Poco::DateTime) || any.type() == typeid(Poco::LocalDateTime));
-	if (isJsonString)
+	if (any.isEmpty()) val.append("null");
+	else 
 	{
-		val.append(1, '\'');
-	}
-	val.append(any.convert<std::string>());
-	if (isJsonString)
-	{
-		val.append(1, '\'');
+		bool isStr = isJSONString(any);
+		if (isStr) val.append(1, '"');
+		val.append(any.convert<std::string>());
+		if (isStr) val.append(1, '"');
 	}
 }
 

Foundation/testsuite/src/VarTest.cpp

@@ -36,8 +36,10 @@
 #include "Poco/Exception.h"
 #include "Poco/Dynamic/Var.h"
 #include "Poco/Bugcheck.h"
-#include "Poco/DynamicStruct.h"
-
+#include "Poco/Dynamic/Struct.h"
+#include "Poco/Dynamic/Pair.h"
+#include <map>
+#include <utility>
 
 #if defined(_MSC_VER) && _MSC_VER < 1400
 	#pragma warning(disable:4800)//forcing value to bool 'true' or 'false'
@@ -2010,6 +2012,49 @@ void VarTest::testDynamicStructInt()
 }
 
 
+void VarTest::testDynamicPair()
+{
+	Pair<int> aPair;
+	assert (0 == aPair.first());
+	try
+	{
+		std::string s = aPair.second().convert<std::string>();
+		fail ("must fail");
+	}
+	catch (InvalidAccessException&) { }
+
+	Var va(aPair);
+	assert ("{ 0 : null }" == va.convert<std::string>());
+
+	aPair = Pair<int>(4, "123");
+	assert ("123" == aPair.second());
+
+	va = aPair;
+	assert ("{ 4 : \"123\" }" == va.convert<std::string>());
+
+	int i = 1;
+	std::string s = "2";
+	Pair<int> iPair(i, s);
+	assert (1 == iPair.first());
+	assert ("2" == iPair.second());
+
+	Pair<std::string> sPair(s, i);
+	assert ("2" == sPair.first());
+	assert (1 == sPair.second());
+
+	std::pair<int, std::string> p = std::make_pair(i, s);
+	Pair<int> pPair(p);
+	assert (1 == pPair.first());
+	assert ("2" == pPair.second());
+
+	Var vp(pPair);
+	assert ("{ 1 : \"2\" }" == vp.convert<std::string>());
+
+	Var vs(sPair);
+	assert ("{ \"2\" : 1 }" == vs.convert<std::string>());
+}
+
+
 void VarTest::testArrayToString()
 {
 	std::string s1("string");
@@ -2019,7 +2064,7 @@ void VarTest::testArrayToString()
 	s16.push_back(s2);
 	Var a1(s16);
 	std::string res = a1.convert<std::string>();
-	std::string expected("[ 'string', 23 ]");
+	std::string expected("[ \"string\", 23 ]");
 	assert (res == expected);
 }
 
@@ -2032,8 +2077,7 @@ void VarTest::testStructToString()
 	aStruct["Age"] = 1;
 	Var a1(aStruct);
 	std::string res = a1.convert<std::string>();
-	std::string expected = "{ 'Age' : 1, 'First Name' : 'Junior', 'Last Name' : 'POCO' }";
-;
+	std::string expected = "{ \"Age\" : 1, \"First Name\" : \"Junior\", \"Last Name\" : \"POCO\" }";
 	assert (res == expected);
 }
 
@@ -2057,14 +2101,14 @@ void VarTest::testArrayOfStructsToString()
 	Var a1(s16);
 	std::string res = a1.convert<std::string>();
 	std::string expected = "[ "
-						"{ 'Age' : 1, 'First Name' : 'Junior', 'Last Name' : 'POCO' }, "
-						"{ 'Age' : 100, 'First Name' : 'Senior', 'Last Name' : 'POCO' }, "
+						"{ \"Age\" : 1, \"First Name\" : \"Junior\", \"Last Name\" : \"POCO\" }, "
+						"{ \"Age\" : 100, \"First Name\" : \"Senior\", \"Last Name\" : \"POCO\" }, "
 							"[ "
-							"{ 'Age' : 1, 'First Name' : 'Junior', 'Last Name' : 'POCO' }, "
-							"{ 'Age' : 100, 'First Name' : 'Senior', 'Last Name' : 'POCO' }, "
+							"{ \"Age\" : 1, \"First Name\" : \"Junior\", \"Last Name\" : \"POCO\" }, "
+							"{ \"Age\" : 100, \"First Name\" : \"Senior\", \"Last Name\" : \"POCO\" }, "
 								"[ "
-								"{ 'Age' : 1, 'First Name' : 'Junior', 'Last Name' : 'POCO' }, "
-								"{ 'Age' : 100, 'First Name' : 'Senior', 'Last Name' : 'POCO' } "
+								"{ \"Age\" : 1, \"First Name\" : \"Junior\", \"Last Name\" : \"POCO\" }, "
+								"{ \"Age\" : 100, \"First Name\" : \"Senior\", \"Last Name\" : \"POCO\" } "
 								"] ] ]";
 	
 	assert (res == expected);
@@ -2090,8 +2134,8 @@ void VarTest::testStructWithArraysToString()
 	aStruct["Address"] = addr;
 	Var a2(aStruct);
 	std::string res = a2.convert<std::string>();
-	std::string expected = "{ 'Address' : { 'Country' : 'Carinthia', 'Number' : 4, 'Street' : 'Unknown' }, "
-								"'Age' : 1, 'First Name' : 'Junior', 'Last Name' : [ 'string', 23 ] }";
+	std::string expected = "{ \"Address\" : { \"Country\" : \"Carinthia\", \"Number\" : 4, \"Street\" : \"Unknown\" }, "
+								"\"Age\" : 1, \"First Name\" : \"Junior\", \"Last Name\" : [ \"string\", 23 ] }";
 
 	assert (res == expected);
 }
@@ -2435,6 +2479,7 @@ CppUnit::Test* VarTest::suite()
 	CppUnit_addTest(pSuite, VarTest, testIsStruct);
 	CppUnit_addTest(pSuite, VarTest, testIsArray);
 	CppUnit_addTest(pSuite, VarTest, testArrayIdxOperator);
+	CppUnit_addTest(pSuite, VarTest, testDynamicPair);
 	CppUnit_addTest(pSuite, VarTest, testDynamicStructBasics);
 	CppUnit_addTest(pSuite, VarTest, testDynamicStructString);
 	CppUnit_addTest(pSuite, VarTest, testDynamicStructInt);

Foundation/testsuite/src/VarTest.h

@@ -72,6 +72,7 @@ public:
 	void testIsStruct();
 	void testIsArray();
 	void testArrayIdxOperator();
+	void testDynamicPair();
 	void testDynamicStructBasics();
 	void testDynamicStructString();
 	void testDynamicStructInt();