add Poco::makeUnique()

CppUnit/CppUnit_vs140.vcxproj.filters

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <Filter Include="Source Files">

CppUnit/CppUnit_x64_vs140.vcxproj.filters

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <Filter Include="Source Files">

CppUnit/CppUnit_x64_vs150.vcxproj.filters

@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <ItemGroup>
     <Filter Include="Source Files">

Foundation/Foundation_vs140.vcxproj

@@ -1079,6 +1079,7 @@
     <ClInclude Include="include\Poco\LogStream.h" />
     <ClInclude Include="include\Poco\LRUCache.h" />
     <ClInclude Include="include\Poco\LRUStrategy.h" />
+    <ClInclude Include="include\Poco\MakeUnique.h" />
     <ClInclude Include="include\Poco\Manifest.h" />
     <ClInclude Include="include\Poco\MD4Engine.h" />
     <ClInclude Include="include\Poco\MD5Engine.h" />

Foundation/Foundation_vs140.vcxproj.filters

@@ -1895,6 +1895,9 @@
     <ClInclude Include="include\Poco\NamedEvent_WIN32.h">
       <Filter>Processes\Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="include\Poco\MakeUnique.h">
+      <Filter>Core\Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="src\pocomsg.rc">

Foundation/Foundation_vs150.vcxproj

@@ -1087,6 +1087,7 @@
     <ClInclude Include="include\Poco\LogStream.h" />
     <ClInclude Include="include\Poco\LRUCache.h" />
     <ClInclude Include="include\Poco\LRUStrategy.h" />
+    <ClInclude Include="include\Poco\MakeUnique.h" />
     <ClInclude Include="include\Poco\Manifest.h" />
     <ClInclude Include="include\Poco\MD4Engine.h" />
     <ClInclude Include="include\Poco\MD5Engine.h" />

Foundation/Foundation_vs150.vcxproj.filters

@@ -1901,6 +1901,9 @@
     <ClInclude Include="include\Poco\ChecksumImpl.h">
       <Filter>Core\Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="include\Poco\MakeUnique.h">
+      <Filter>Core\Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="src\pocomsg.rc">

Foundation/Foundation_x64_vs140.vcxproj

@@ -1077,6 +1077,7 @@
     <ClInclude Include="include\Poco\LogStream.h" />
     <ClInclude Include="include\Poco\LRUCache.h" />
     <ClInclude Include="include\Poco\LRUStrategy.h" />
+    <ClInclude Include="include\Poco\MakeUnique.h" />
     <ClInclude Include="include\Poco\Manifest.h" />
     <ClInclude Include="include\Poco\MD4Engine.h" />
     <ClInclude Include="include\Poco\MD5Engine.h" />

Foundation/Foundation_x64_vs140.vcxproj.filters

@@ -1895,6 +1895,9 @@
     <ClInclude Include="include\Poco\ChecksumImpl.h">
       <Filter>Core\Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="include\Poco\MakeUnique.h">
+      <Filter>Core\Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="src\pocomsg.rc">

Foundation/Foundation_x64_vs150.vcxproj

@@ -1077,6 +1077,7 @@
     <ClInclude Include="include\Poco\LogStream.h" />
     <ClInclude Include="include\Poco\LRUCache.h" />
     <ClInclude Include="include\Poco\LRUStrategy.h" />
+    <ClInclude Include="include\Poco\MakeUnique.h" />
     <ClInclude Include="include\Poco\Manifest.h" />
     <ClInclude Include="include\Poco\MD4Engine.h" />
     <ClInclude Include="include\Poco\MD5Engine.h" />

Foundation/Foundation_x64_vs150.vcxproj.filters

@@ -1895,6 +1895,9 @@
     <ClInclude Include="include\Poco\ChecksumImpl.h">
       <Filter>Core\Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="include\Poco\MakeUnique.h">
+      <Filter>Core\Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="src\pocomsg.rc">

Foundation/include/Poco/MakeUnique.h

@@ -0,0 +1,69 @@
+//
+// MakeUnique.h
+//
+// Library: Foundation
+// Package: Core
+// Module:  MakeUnique
+//
+// Definition of the MakeUnique template class. This is essentially std::make_unique
+// for pre-C++14 compilers.
+//
+// Code adapted for naming convention from https://isocpp.org/files/papers/N3656.txt
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_MakeUnique_INCLUDED
+#define Foundation_MakeUnique_INCLUDED
+
+
+#include "Poco/Foundation.h"
+#include <cstddef>
+#include <memory>
+#include <type_traits>
+#include <utility>
+
+
+namespace Poco {
+
+
+	template<class T> struct UniqueIf
+	{
+		typedef std::unique_ptr<T> SingleObject;
+	};
+
+	template<class T> struct UniqueIf<T[]>
+	{
+		typedef std::unique_ptr<T[]> UnknownBound;
+	};
+
+	template<class T, size_t N> struct UniqueIf<T[N]>
+	{
+		typedef void KnownBound;
+	};
+
+	template<class T, class... Args>
+	typename UniqueIf<T>::SingleObject makeUnique(Args&&... args)
+	{
+		return std::unique_ptr<T>(new T(std::forward<Args>(args)...));
+	}
+
+	template<class T>
+	typename UniqueIf<T>::UnknownBound makeUnique(size_t n)
+	{
+		typedef typename std::remove_extent<T>::type U;
+		return std::unique_ptr<T>(new U[n]());
+	}
+
+	template<class T, class... Args>
+	typename UniqueIf<T>::KnownBound makeUnique(Args&&...) = delete;
+
+
+} // namespace Poco
+
+
+#endif // Foundation_MakeUnique_INCLUDED

Foundation/testsuite/src/CoreTest.cpp

@@ -24,6 +24,7 @@
 #include "Poco/BasicEvent.h"
 #include "Poco/Delegate.h"
 #include "Poco/Checksum.h"
+#include "Poco/MakeUnique.h"
 #include "Poco/Exception.h"
 #include <iostream>
 #include <sstream>
@@ -45,6 +46,7 @@ using Poco::delegate;
 using Poco::NullType;
 using Poco::InvalidAccessException;
 using Poco::Checksum;
+using Poco::makeUnique;
 
 
 namespace
@@ -581,7 +583,6 @@ void CoreTest::testAscii()
 }
 
 
-
 void CoreTest::testChecksum64()
 {
 	Poco::Checksum checksum64_0(Checksum::TYPE_CRC64);
@@ -634,6 +635,21 @@ void CoreTest::testChecksum64()
 }
 
 
+void CoreTest::testMakeUnique()
+{
+	assert (*makeUnique<int>() == 0);
+	assert (*makeUnique<int>(1729) == 1729);
+	assert (*makeUnique<std::string>() == "");
+	assert (*makeUnique<std::string>("meow") == "meow");
+	assert (*makeUnique<std::string>(6, 'z') == "zzzzzz");
+
+	auto up = makeUnique<int[]>(5);
+
+	for (int i = 0; i < 5; ++i) up[i] = i;
+	for (int i = 0; i < 5; ++i) assert (up[i] == i);
+}
+
+
 void CoreTest::setUp()
 {
 	_readableToNot = 0;
@@ -661,6 +677,7 @@ CppUnit::Test* CoreTest::suite()
 	CppUnit_addTest(pSuite, CoreTest, testNullable);
 	CppUnit_addTest(pSuite, CoreTest, testAscii);
 	CppUnit_addTest(pSuite, CoreTest, testChecksum64);
+	CppUnit_addTest(pSuite, CoreTest, testMakeUnique);
 
 	return pSuite;
 }

Foundation/testsuite/src/CoreTest.h

@@ -34,6 +34,7 @@ public:
 	void testNullable();
 	void testAscii();
 	void testChecksum64();
+	void testMakeUnique();
 
 	void setUp();
 	void tearDown();