Add const std::unique_ptr & input typemaps

CHANGES.current

@@ -7,6 +7,11 @@ the issue number to the end of the URL: https://github.com/swig/swig/issues/
 Version 4.3.0 (in progress)
 ===========================
 
+2024-02-06: wsfulton
+            Add support for std::unique_ptr & typemaps. Non-const inputs implement
+            move semantics from proxy class to C++ layer, otherwise const inputs
+            and all reference returns behave like any other lvalue reference to a class.
+
 2024-02-02: wsfulton
             [Javascript, MzScheme, Octave] Support NULL being passed into char* typemaps.
 

Doc/Manual/Library.html

@@ -2103,6 +2103,8 @@ The type <tt>T</tt> must be non-primitive.
 This macro should be used before any code declaring or using type <tt>T</tt>.
 Ordering requirements for using this smart pointer macro are the same as the
 equivalent <tt>%shared_ptr(T)</tt> macro covered in the previous section.
+The ownership and move semantics described here can of course be modified if not suitable
+by copying and customising the typemaps in the appropriate <tt>std_unique_ptr.i</tt> library file.
 </p>
 
 <H4><a name="Library_std_unique_ptr_by_value">12.4.6 unique_ptr passed by value</a></H4>
@@ -2243,6 +2245,19 @@ void process(std::unique_ptr&lt;Klass&gt; &amp;);
 </pre>
 </div>
 
+<p>
+Passing const lvalue references into a function works much like passing any wrapped class.
+The proxy class owning the underling C++ object continues to own the underying C++ object
+after calling the function, the function cannot modify the <tt>std::unique_ptr</tt> or take ownership.
+Example:
+</p>
+
+<div class="code">
+<pre>
+void use(const std::unique_ptr&lt;Klass&gt; &amp;);
+</pre>
+</div>
+
 <p>
 Move semantics are not provided when wrapping a C++ function that returns a <tt>std::unique_ptr</tt> by reference.
 The target language proxy class wrapper that is returned does not own the underlying C++ object.
@@ -2251,8 +2266,8 @@ This applies to all reference types, such as:
 
 <div class="code">
 <pre>
-std::unique_ptr<Klass> &amp; LvalueRefReturn();
-std::unique_ptr<Klass> &amp;&amp; RvalueRefReturn();
+std::unique_ptr&lt;Klass&gt; &amp; LvalueRefReturn();
+std::unique_ptr&lt;Klass&gt; &amp;&amp; RvalueRefReturn();
 </pre>
 </div>
 

Examples/test-suite/cpp11_std_unique_ptr.i

@@ -5,6 +5,7 @@
 %warnfilter(509, 516) overloadTest(Klass);
 %warnfilter(509, 516) moveOverloadTest(Klass);
 %warnfilter(509, 516) moveRefOverloadTest(Klass);
+%warnfilter(509, 516) useRefOverloadTest(Klass);
 
 %include "std_string.i"
 %include "std_unique_ptr.i"
@@ -86,6 +87,13 @@ std::string moveRefKlassUniquePtr(std::unique_ptr<Klass>& k) {
   return s;
 }
 
+std::string useRefKlassUniquePtr(const std::unique_ptr<Klass>& k) {
+//  std::cout << "useRefKlassUniquePtr " << std::hex << (Klass*)k.get() << std::endl;
+  std::string s(k ? k->getLabel() : "null smart pointer");
+//  std::cout << "useRefKlassUniquePtr string: " << s << std::endl;
+  return s;
+}
+
 Klass *make_null() {
   return nullptr;
 }
@@ -164,6 +172,18 @@ int moveRefOverloadTest(Klass k) {
   return 2;
 }
 
+int useRefOverloadTest() {
+  return 0;
+}
+
+int useRefOverloadTest(const std::unique_ptr<Klass>& kover) {
+  return 1;
+}
+
+int useRefOverloadTest(Klass k) {
+  return 2;
+}
+
 %}
 
 #endif

Examples/test-suite/csharp/cpp11_std_unique_ptr_runme.cs

@@ -253,6 +253,43 @@ public class cpp11_std_unique_ptr_runme {
         checkCount(0);
 
 
+        ///// INPUT BY CONST LVALUE REF /////
+        // unique_ptr as input
+        using (Klass kin = new Klass("KlassInput")) {
+          checkCount(1);
+          string s = cpp11_std_unique_ptr.useRefKlassUniquePtr(kin);
+          checkCount(1);
+          if (s != "KlassInput")
+            throw new ApplicationException("Incorrect string: " + s);
+        }
+        checkCount(0);
+
+        using (KlassInheritance kini = new KlassInheritance("KlassInheritanceInput")) {
+          checkCount(1);
+          string s = cpp11_std_unique_ptr.useRefKlassUniquePtr(kini);
+          checkCount(1);
+          if (s != "KlassInheritanceInput")
+            throw new ApplicationException("Incorrect string: " + s);
+        }
+        checkCount(0);
+
+        cpp11_std_unique_ptr.useRefKlassUniquePtr(null);
+        cpp11_std_unique_ptr.useRefKlassUniquePtr(cpp11_std_unique_ptr.make_null());
+        checkCount(0);
+
+        // overloaded parameters
+        if (cpp11_std_unique_ptr.useRefOverloadTest() != 0)
+          throw new ApplicationException("useRefOverloadTest failed");
+        if (cpp11_std_unique_ptr.useRefOverloadTest(null) != 1)
+          throw new ApplicationException("useRefOverloadTest failed");
+        using (Klass kin = new KlassInheritance("OverloadInput")) {
+          if (cpp11_std_unique_ptr.useRefOverloadTest(kin) != 1)
+            throw new ApplicationException("useRefOverloadTest failed");
+          checkCount(1);
+        }
+        checkCount(0);
+
+
         // unique_ptr as output
         Klass k1 = cpp11_std_unique_ptr.makeKlassUniquePtr("first");
         if (k1.getLabel() != "first")

Examples/test-suite/d/cpp11_std_unique_ptr_runme.2.d

@@ -260,6 +260,46 @@ void main() {
   checkCount(0);
 
 
+  ///// INPUT BY CONST LVALUE REF /////
+  // unique_ptr as input
+  {
+    scope Klass kin = new Klass("KlassInput");
+    checkCount(1);
+    string s = useRefKlassUniquePtr(kin);
+    checkCount(1);
+    if (s != "KlassInput")
+      throw new Exception("Incorrect string: " ~ s);
+  }
+  checkCount(0);
+
+  {
+    scope KlassInheritance kini = new KlassInheritance("KlassInheritanceInput");
+    checkCount(1);
+    string s = useRefKlassUniquePtr(kini);
+    checkCount(1);
+    if (s != "KlassInheritanceInput")
+      throw new Exception("Incorrect string: " ~ s);
+  }
+  checkCount(0);
+
+  useRefKlassUniquePtr(null);
+  useRefKlassUniquePtr(make_null());
+  checkCount(0);
+
+  // overloaded parameters
+  if (useRefOverloadTest() != 0)
+    throw new Exception("useRefOverloadTest failed");
+  if (useRefOverloadTest(null) != 1)
+    throw new Exception("useRefOverloadTest failed");
+  {
+    scope Klass kin = new Klass("over");
+    if (useRefOverloadTest(kin) != 1)
+      throw new Exception("useRefOverloadTest failed");
+    checkCount(1);
+  }
+  checkCount(0);
+
+
   // unique_ptr as output
   Klass k1 = makeKlassUniquePtr("first");
   if (k1.getLabel() != "first")

Examples/test-suite/java/cpp11_std_unique_ptr_runme.java

@@ -290,6 +290,49 @@ public class cpp11_std_unique_ptr_runme {
     checkCount(0);
 
 
+    ///// INPUT BY CONST LVALUE REF /////
+    // unique_ptr as input
+    {
+      Klass kin = new Klass("KlassInput");
+      checkCount(1);
+      String s = cpp11_std_unique_ptr.useRefKlassUniquePtr(kin);
+      checkCount(1);
+      if (!s.equals("KlassInput"))
+        throw new RuntimeException("Incorrect string: " + s);
+      kin.delete();
+      checkCount(0);
+    }
+
+    {
+      KlassInheritance kini = new KlassInheritance("KlassInheritanceInput");
+      checkCount(1);
+      String s = cpp11_std_unique_ptr.useRefKlassUniquePtr(kini);
+      checkCount(1);
+      if (!s.equals("KlassInheritanceInput"))
+        throw new RuntimeException("Incorrect string: " + s);
+      kini.delete();
+      checkCount(0);
+    }
+
+    cpp11_std_unique_ptr.useRefKlassUniquePtr(null);
+    cpp11_std_unique_ptr.useRefKlassUniquePtr(cpp11_std_unique_ptr.make_null());
+    checkCount(0);
+
+    // overloaded parameters
+    if (cpp11_std_unique_ptr.useRefOverloadTest() != 0)
+      throw new RuntimeException("useRefOverloadTest failed");
+    if (cpp11_std_unique_ptr.useRefOverloadTest(null) != 1)
+      throw new RuntimeException("useRefOverloadTest failed");
+    {
+      Klass kin = new Klass("over");
+      if (cpp11_std_unique_ptr.useRefOverloadTest(kin) != 1)
+        throw new RuntimeException("useRefOverloadTest failed");
+      checkCount(1);
+      kin.delete();
+    }
+    checkCount(0);
+
+
     // unique_ptr as output
     Klass k1 = cpp11_std_unique_ptr.makeKlassUniquePtr("first");
     if (!k1.getLabel().equals("first"))

Examples/test-suite/javascript/cpp11_std_unique_ptr_runme.js

@@ -275,6 +275,53 @@ if (cpp11_std_unique_ptr.moveRefOverloadTest(new cpp11_std_unique_ptr.Klass("ove
 checkCount(0);
 
 
+///// INPUT BY CONST LVALUE REF /////
+// unique_ptr as input
+{
+  kin = new cpp11_std_unique_ptr.Klass("KlassInput");
+  checkCount(1);
+  s = cpp11_std_unique_ptr.useRefKlassUniquePtr(kin);
+  checkCount(1);
+  if (s !== "KlassInput")
+    throw new Error("Incorrect string: " + s);
+  // delete kin;
+  // Above not deleting the C++ object(node v12) - can't reliably control GC
+  cpp11_std_unique_ptr.takeKlassUniquePtr(kin);
+  checkCount(0);
+}
+
+{
+  kini = new cpp11_std_unique_ptr.KlassInheritance("KlassInheritanceInput");
+  checkCount(1);
+  s = cpp11_std_unique_ptr.useRefKlassUniquePtr(kini);
+  checkCount(1);
+  if (s !== "KlassInheritanceInput")
+    throw new Error("Incorrect string: " + s);
+  // delete kini;
+  // Above not deleting the C++ object - can't reliably control GC
+  cpp11_std_unique_ptr.takeKlassUniquePtr(kini);
+  checkCount(0);
+}
+
+cpp11_std_unique_ptr.useRefKlassUniquePtr(null);
+cpp11_std_unique_ptr.useRefKlassUniquePtr(cpp11_std_unique_ptr.make_null());
+checkCount(0);
+
+// overloaded parameters
+if (cpp11_std_unique_ptr.useRefOverloadTest() != 0)
+  throw new RuntimeException("useRefOverloadTest failed");
+if (cpp11_std_unique_ptr.useRefOverloadTest(null) != 1)
+  throw new RuntimeException("useRefOverloadTest failed");
+kin = new cpp11_std_unique_ptr.Klass("over")
+if (cpp11_std_unique_ptr.useRefOverloadTest(kin) != 1)
+  throw new RuntimeException("useRefOverloadTest failed");
+checkCount(1);
+// delete kin;
+// Above not deleting the C++ object - can't reliably control GC
+cpp11_std_unique_ptr.takeKlassUniquePtr(kin);
+checkCount(0);
+
+
 // unique_ptr as output
 k1 = cpp11_std_unique_ptr.makeKlassUniquePtr("first");
 if (k1.getLabel() !== "first")

Examples/test-suite/lua/cpp11_std_unique_ptr_runme.lua

@@ -233,6 +233,48 @@ end
 checkCount(0)
 
 
+--- ---- INPUT BY CONST LVALUE REF ---
+-- unique_ptr as input
+kin = cpp11_std_unique_ptr.Klass("KlassInput")
+checkCount(1)
+s = cpp11_std_unique_ptr.useRefKlassUniquePtr(kin)
+checkCount(1)
+if not (s == "KlassInput") then
+  error("Incorrect string: "..s)
+end
+kin = nil
+checkCount(0)
+
+kini = cpp11_std_unique_ptr.KlassInheritance("KlassInheritanceInput")
+checkCount(1)
+s = cpp11_std_unique_ptr.useRefKlassUniquePtr(kini)
+checkCount(1)
+if not (s == "KlassInheritanceInput") then
+  error("Incorrect string: "..s)
+end
+kini = nil
+checkCount(0)
+
+cpp11_std_unique_ptr.useRefKlassUniquePtr(nil);
+cpp11_std_unique_ptr.useRefKlassUniquePtr(cpp11_std_unique_ptr.make_null());
+checkCount(0);
+
+-- overloaded parameters
+if not (cpp11_std_unique_ptr.useRefOverloadTest() == 0) then
+  error("useRefOverloadTest failed")
+end
+if not (cpp11_std_unique_ptr.useRefOverloadTest(nil) == 1) then
+  error("useRefOverloadTest failed")
+end
+kin = cpp11_std_unique_ptr.Klass("over")
+if not (cpp11_std_unique_ptr.useRefOverloadTest(kin) == 1) then
+  error("useRefOverloadTest failed")
+end
+checkCount(1)
+kin = nil
+checkCount(0)
+
+
 -- unique_ptr as output
 k1 = cpp11_std_unique_ptr.makeKlassUniquePtr("first")
 k2 = cpp11_std_unique_ptr.makeKlassUniquePtr("second")

Examples/test-suite/mzscheme/cpp11_std_unique_ptr_runme.scm

@@ -228,6 +228,44 @@
 (checkCount 0)
 
 
+; ;;;; INPUT BY CONST LVALUE REF ;;;;
+; unique_ptr as input
+(define kin (new-Klass "KlassInput"))
+(checkCount 1)
+(define s (useRefKlassUniquePtr kin))
+(checkCount 1)
+(unless (string=? s "KlassInput")
+  (error "Incorrect string: " s))
+(set! kin '()) (gc)
+(checkCount 0)
+
+(define kini (new-KlassInheritance "KlassInheritanceInput"))
+(checkCount 1)
+(define s (useRefKlassUniquePtr kini))
+(checkCount 1)
+(unless (string=? s "KlassInheritanceInput")
+  (error "Incorrect string: " s))
+(set! kini '()) (gc)
+(checkCount 0)
+
+(define null '())
+(useRefKlassUniquePtr null)
+(useRefKlassUniquePtr (make-null))
+(checkCount 0)
+
+; overloaded parameters
+(unless (= (useRefOverloadTest) 0)
+  (error "useRefOverloadTest failed"))
+(unless (= (useRefOverloadTest null) 1)
+  (error "useRefOverloadTest failed"))
+(define kin (new-Klass "over"))
+(unless (= (useRefOverloadTest kin) 1)
+  (error "useRefOverloadTest failed"))
+(checkCount 1)
+(set! kin '()) (gc)
+(checkCount 0)
+
+
 ; unique_ptr as output
 (define k1 (makeKlassUniquePtr "first"))
 (define k2 (makeKlassUniquePtr "second"))

Examples/test-suite/octave/cpp11_std_unique_ptr_runme.m

@@ -296,6 +296,51 @@ endif
 checkCount(0);
 
 
+# #### INPUT BY CONST LVALUE REF ####
+# unique_ptr as input
+kin = Klass("KlassInput");
+checkCount(1);
+s = useRefKlassUniquePtr(kin);
+checkCount(1);
+if (!strcmp(s, "KlassInput"))
+  error("Incorrect string: %s", s);
+endif
+clear kin;
+checkCount(0);
+
+kini = KlassInheritance("KlassInheritanceInput");
+checkCount(1);
+s = useRefKlassUniquePtr(kini);
+checkCount(1);
+if (!strcmp(s, "KlassInheritanceInput"))
+  error("Incorrect string: %s", s);
+endif
+clear kini;
+checkCount(0);
+
+null = []; # NULL pointer
+null_ptr = make_null();
+useRefKlassUniquePtr([]);
+useRefKlassUniquePtr(null);
+useRefKlassUniquePtr(null_ptr);
+checkCount(0);
+
+# overloaded parameters
+if (useRefOverloadTest() != 0)
+  error("useRefOverloadTest failed");
+endif
+if (useRefOverloadTest(null) != 1)
+  error("useRefOverloadTest failed");
+endif
+kin = Klass("over");
+if (useRefOverloadTest(kin) != 1)
+  error("useRefOverloadTest failed");
+endif
+checkCount(1);
+clear kin
+checkCount(0);
+
+
 # unique_ptr as output
 k1 = makeKlassUniquePtr("first");
 if (!strcmp(k1.getLabel(), "first"))

Examples/test-suite/perl5/cpp11_std_unique_ptr_runme.pl

@@ -1,6 +1,6 @@
 use strict;
 use warnings;
-use Test::More tests => 86;
+use Test::More tests => 100;
 BEGIN { use_ok('cpp11_std_unique_ptr') }
 require_ok('cpp11_std_unique_ptr');
 
@@ -209,6 +209,42 @@ is(cpp11_std_unique_ptr::moveRefOverloadTest(new cpp11_std_unique_ptr::Klass("ov
 checkCount(0);
 
 
+# #### INPUT BY CONST LVALUE REF ####
+# unique_ptr as input
+{
+  my $kin = new cpp11_std_unique_ptr::Klass("KlassInput");
+  checkCount(1);
+  my $s = cpp11_std_unique_ptr::useRefKlassUniquePtr($kin);
+  checkCount(1);
+  is($s, "KlassInput", "Incorrect string: $s");
+  undef $kin;
+  checkCount(0);
+}
+
+{
+  my $kini = new cpp11_std_unique_ptr::KlassInheritance("KlassInheritanceInput");
+  checkCount(1);
+  my $s = cpp11_std_unique_ptr::useRefKlassUniquePtr($kini);
+  checkCount(1);
+  is($s, "KlassInheritanceInput", "Incorrect string: $s");
+  undef $kini;
+  checkCount(0);
+}
+
+cpp11_std_unique_ptr::useRefKlassUniquePtr(undef);
+cpp11_std_unique_ptr::useRefKlassUniquePtr(cpp11_std_unique_ptr::make_null());
+checkCount(0);
+
+# overloaded parameters
+is(cpp11_std_unique_ptr::useRefOverloadTest(), 0, "useRefOverloadTest failed");
+is(cpp11_std_unique_ptr::useRefOverloadTest(undef), 1, "useRefOverloadTest failed");
+my $kin = new cpp11_std_unique_ptr::Klass("over");
+is(cpp11_std_unique_ptr::useRefOverloadTest($kin), 1, "useRefOverloadTest failed");
+checkCount(1);
+undef $kin;
+checkCount(0);
+
+
 # unique_ptr as output
 my $k1 = cpp11_std_unique_ptr::makeKlassUniquePtr("first");
 my $k2 = cpp11_std_unique_ptr::makeKlassUniquePtr("second");

Examples/test-suite/php/cpp11_std_unique_ptr_runme.php

@@ -241,6 +241,38 @@ check::equal(moveRefOverloadTest(new Klass("over")), 1, "moveRefOverloadTest fai
 checkCount(0);
 
 
+# #### INPUT BY CONST LVALUE REF ####
+# unique_ptr as input
+$kin = new Klass("KlassInput");
+checkCount(1);
+$s = useRefKlassUniquePtr($kin);
+checkCount(1);
+check::equal($s, "KlassInput", "Incorrect string: $s");
+$kin = NULL;
+checkCount(0);
+
+$kini = new KlassInheritance("KlassInheritanceInput");
+checkCount(1);
+$s = useRefKlassUniquePtr($kini);
+checkCount(1);
+check::equal($s, "KlassInheritanceInput", "Incorrect string: $s");
+$kini = NULL;
+checkCount(0);
+
+useRefKlassUniquePtr(NULL);
+useRefKlassUniquePtr(make_null());
+checkCount(0);
+
+# overloaded parameters
+check::equal(useRefOverloadTest(), 0, "useRefOverloadTest failed");
+check::equal(useRefOverloadTest(NULL), 1, "useRefOverloadTest failed");
+$kin = new Klass("over");
+check::equal(useRefOverloadTest($kin), 1, "useRefOverloadTest failed");
+checkCount(1);
+$kin = NULL;
+checkCount(0);
+
+
 # unique_ptr as output
 $k1 = makeKlassUniquePtr("first");
 $k2 = makeKlassUniquePtr("second");

Examples/test-suite/python/cpp11_std_unique_ptr_runme.py

@@ -3,7 +3,7 @@ from cpp11_std_unique_ptr import *
 def checkCount(expected_count):
     actual_count = Klass.getTotal_count()
     if (actual_count != expected_count):
-        raise RuntimeError("Counts incorrect, expected:" + expected_count + " actual:" + actual_count)
+        raise RuntimeError("Counts incorrect, expected: {} actual:{}".format(expected_count, actual_count))
 
 # Test raw pointer handling involving virtual inheritance
 kini = KlassInheritance("KlassInheritanceInput")
@@ -45,7 +45,7 @@ try:
     s = takeKlassUniquePtr(kin)
 except RuntimeError as e:
     if "cannot release ownership as memory is not owned" not in str(e):
-        raise RuntimeError("incorrect exception message");
+        raise RuntimeError("incorrect exception message")
     exception_thrown = True
 if not exception_thrown:
     raise RuntimeError("double usage of takeKlassUniquePtr should have been an error")
@@ -89,7 +89,7 @@ if overloadTest(None) != 1:
   raise RuntimeError("overloadTest failed")
 if overloadTest(Klass("over")) != 1:
   raise RuntimeError("overloadTest failed")
-checkCount(0);
+checkCount(0)
 
 
 # #### INPUT BY RVALUE REF ####
@@ -122,7 +122,7 @@ try:
     s = moveKlassUniquePtr(kin)
 except RuntimeError as e:
     if "cannot release ownership as memory is not owned" not in str(e):
-        raise RuntimeError("incorrect exception message");
+        raise RuntimeError("incorrect exception message")
     exception_thrown = True
 if not exception_thrown:
     raise RuntimeError("double usage of moveKlassUniquePtr should have been an error")
@@ -166,7 +166,7 @@ if moveOverloadTest(None) != 1:
   raise RuntimeError("moveOverloadTest failed")
 if moveOverloadTest(Klass("over")) != 1:
   raise RuntimeError("moveOverloadTest failed")
-checkCount(0);
+checkCount(0)
 
 
 # #### INPUT BY NON-CONST LVALUE REF ####
@@ -199,7 +199,7 @@ try:
     s = moveRefKlassUniquePtr(kin)
 except RuntimeError as e:
     if "cannot release ownership as memory is not owned" not in str(e):
-        raise RuntimeError("incorrect exception message");
+        raise RuntimeError("incorrect exception message")
     exception_thrown = True
 if not exception_thrown:
     raise RuntimeError("double usage of moveRefKlassUniquePtr should have been an error")
@@ -243,7 +243,44 @@ if moveRefOverloadTest(None) != 1:
   raise RuntimeError("moveRefOverloadTest failed")
 if moveRefOverloadTest(Klass("over")) != 1:
   raise RuntimeError("moveRefOverloadTest failed")
-checkCount(0);
+checkCount(0)
+
+
+# #### INPUT BY CONST LVALUE REF ####
+# unique_ptr as input
+kin = Klass("KlassInput")
+checkCount(1)
+s = useRefKlassUniquePtr(kin)
+checkCount(1)
+if s != "KlassInput":
+    raise RuntimeError("Incorrect string: " + s)
+del kin
+checkCount(0)
+
+kini = KlassInheritance("KlassInheritanceInput")
+checkCount(1)
+s = useRefKlassUniquePtr(kini)
+checkCount(1)
+if s != "KlassInheritanceInput":
+    raise RuntimeError("Incorrect string: " + s)
+del kini
+checkCount(0)
+
+useRefKlassUniquePtr(None)
+useRefKlassUniquePtr(make_null())
+checkCount(0)
+
+# overloaded parameters
+if useRefOverloadTest() != 0:
+  raise RuntimeError("useRefOverloadTest failed")
+if useRefOverloadTest(None) != 1:
+  raise RuntimeError("useRefOverloadTest failed")
+kin = Klass("over")
+if useRefOverloadTest(kin) != 1:
+  raise RuntimeError("useRefOverloadTest failed")
+checkCount(1)
+del kin
+checkCount(0)
 
 
 # unique_ptr as output

Examples/test-suite/python/li_std_auto_ptr_runme.py

@@ -3,7 +3,7 @@ from li_std_auto_ptr import *
 def checkCount(expected_count):
     actual_count = Klass.getTotal_count()
     if (actual_count != expected_count):
-        raise RuntimeError("Counts incorrect, expected:" + expected_count + " actual:" + actual_count)
+        raise RuntimeError("Counts incorrect, expected: {} actual:{}".format(expected_count, actual_count))
 
 # Test raw pointer handling involving virtual inheritance
 kini = KlassInheritance("KlassInheritanceInput")

Examples/test-suite/ruby/cpp11_std_unique_ptr_runme.rb

@@ -14,7 +14,7 @@ end
 def checkCount(expected_count)
     actual_count = Cpp11_std_unique_ptr::Klass.getTotal_count()
     if (actual_count != expected_count)
-        raise RuntimeError, "Counts incorrect, expected:" + expected_count + " actual:" + actual_count
+        raise RuntimeError, "Counts incorrect, expected:#{expected_count} actual:#{actual_count}"
     end
 end
 
@@ -131,7 +131,7 @@ end
 if (Cpp11_std_unique_ptr::overloadTest(Cpp11_std_unique_ptr::Klass.new("over")) != 1)
   raise RuntimeError, "overloadTest failed"
 end
-checkCount(0);
+checkCount(0)
 
 
 # #### INPUT BY RVALUE REF ####
@@ -235,7 +235,7 @@ end
 if (Cpp11_std_unique_ptr::moveOverloadTest(Cpp11_std_unique_ptr::Klass.new("over")) != 1)
   raise RuntimeError, "moveOverloadTest failed"
 end
-checkCount(0);
+checkCount(0)
 
 
 # #### INPUT BY NON-CONST LVALUE REF ####
@@ -339,7 +339,52 @@ end
 if (Cpp11_std_unique_ptr::moveRefOverloadTest(Cpp11_std_unique_ptr::Klass.new("over")) != 1)
   raise RuntimeError, "moveRefOverloadTest failed"
 end
-checkCount(0);
+checkCount(0)
+
+
+# #### INPUT BY CONST LVALUE REF ####
+# unique_ptr as input
+kin = Cpp11_std_unique_ptr::Klass.new("KlassInput")
+checkCount(1)
+s = Cpp11_std_unique_ptr.useRefKlassUniquePtr(kin)
+checkCount(1)
+if (s != "KlassInput")
+    raise RuntimeError, "Incorrect string: " + s
+end
+# kin = nil
+Cpp11_std_unique_ptr.takeKlassUniquePtr(kin) # Ensure object is deleted (can't rely on GC)
+checkCount(0)
+
+kini = Cpp11_std_unique_ptr::KlassInheritance.new("KlassInheritanceInput")
+checkCount(1)
+s = Cpp11_std_unique_ptr.useRefKlassUniquePtr(kini)
+checkCount(1)
+if (s != "KlassInheritanceInput")
+    raise RuntimeError, "Incorrect string: " + s
+end
+# kini = nil
+Cpp11_std_unique_ptr.takeKlassUniquePtr(kini) # Ensure object is deleted (can't rely on GC)
+checkCount(0)
+
+Cpp11_std_unique_ptr::useRefKlassUniquePtr(nil)
+Cpp11_std_unique_ptr::useRefKlassUniquePtr(Cpp11_std_unique_ptr::make_null())
+checkCount(0)
+
+# overloaded parameters
+if (Cpp11_std_unique_ptr::useRefOverloadTest() != 0)
+  raise RuntimeError, "useRefOverloadTest failed"
+end
+if (Cpp11_std_unique_ptr::useRefOverloadTest(nil) != 1)
+  raise RuntimeError, "useRefOverloadTest failed"
+end
+kin = Cpp11_std_unique_ptr::Klass.new("over")
+if (Cpp11_std_unique_ptr::useRefOverloadTest(kin) != 1)
+  raise RuntimeError, "useRefOverloadTest failed"
+end
+checkCount(1)
+# kin = nil
+Cpp11_std_unique_ptr.takeKlassUniquePtr(kin) # Ensure object is deleted (can't rely on GC)
+checkCount(0)
 
 
 # unique_ptr as output

Examples/test-suite/ruby/li_std_auto_ptr_runme.rb

@@ -14,7 +14,7 @@ end
 def checkCount(expected_count)
     actual_count = Li_std_auto_ptr::Klass.getTotal_count()
     if (actual_count != expected_count)
-        raise RuntimeError, "Counts incorrect, expected:" + expected_count + " actual:" + actual_count
+        raise RuntimeError, "Counts incorrect, expected:#{expected_count} actual:#{actual_count}"
     end
 end
 

Examples/test-suite/tcl/cpp11_std_unique_ptr_runme.tcl

@@ -328,6 +328,48 @@ if {[moveRefOverloadTest [Klass k "over"]] != 1} {
 checkCount 0
 
 
+# #### INPUT BY CONST LVALUE REF ####
+# unique_ptr as input
+Klass kin "KlassInput"
+checkCount 1
+set s [useRefKlassUniquePtr kin]
+checkCount 1
+if {$s != "KlassInput"} {
+  error "Incorrect string: $s"
+}
+kin -delete
+checkCount 0
+
+KlassInheritance kini "KlassInheritanceInput"
+checkCount 1
+set s [useRefKlassUniquePtr kini]
+checkCount 1
+if {$s != "KlassInheritanceInput"} {
+  error "Incorrect string: $s"
+}
+kini -delete
+checkCount 0
+
+useRefKlassUniquePtr "NULL"
+useRefKlassUniquePtr [make_null]
+checkCount 0
+
+# overloaded parameters
+if {[useRefOverloadTest] != 0} {
+  error "useRefOverloadTest failed"
+}
+if {[useRefOverloadTest "NULL"] != 1} {
+  error "useRefOverloadTest failed"
+}
+Klass kin "over"
+if {[useRefOverloadTest kin] != 1} {
+  error "useRefOverloadTest failed"
+}
+checkCount 1
+kin -delete
+checkCount 0
+
+
 # unique_ptr as output
 set k1 [makeKlassUniquePtr "first"]
 set k2 [makeKlassUniquePtr "second"]

Lib/csharp/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap (ctype) std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > && "void *"
 %typemap (imtype, out="System.IntPtr") std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > && "global::System.Runtime.InteropServices.HandleRef"
@@ -18,8 +27,12 @@
 %typemap(in) std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > &&
 %{ $*1_ltype $1_uptr((TYPE *)$input);
   $1 = &$1_uptr; %}
+%typemap(in, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > &
+%{ swig::NoDeleteUniquePtr< TYPE > $1_ndup((TYPE *)$input);
+$1 = &$1_ndup.uptr; %}
 
 %typemap(csin) std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > && "$typemap(cstype, TYPE).swigRelease($csinput)"
+%typemap(csin) const std::unique_ptr< TYPE > & "$typemap(cstype, TYPE).getCPtr($csinput)"
 
 %typemap (out) std::unique_ptr< TYPE > %{
   $result = (void *)$1.release();
@@ -45,7 +58,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/d/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap (ctype) std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > &&  "void *"
 %typemap (imtype) std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > &&  "void*"
@@ -18,10 +27,17 @@
 %typemap(in) std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > &&
 %{ $*1_ltype $1_uptr((TYPE *)$input);
   $1 = &$1_uptr; %}
+%typemap(in, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > &
+%{ swig::NoDeleteUniquePtr< TYPE > $1_ndup((TYPE *)$input);
+$1 = &$1_ndup.uptr; %}
+
 
 %typemap(din,
   nativepointer="cast(void*)$dinput"
 ) std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > &&  "$typemap(dtype, TYPE).swigRelease($dinput)"
+%typemap(din,
+  nativepointer="cast(void*)$dinput"
+) const std::unique_ptr< TYPE > &  "$typemap(dtype, TYPE).swigGetCPtr($dinput)"
 
 %typemap (out) std::unique_ptr< TYPE > %{
   $result = (void *)$1.release();
@@ -51,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/guile/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE);
@@ -33,6 +42,14 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
 
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN));
@@ -49,7 +66,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/java/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 
 %typemap (jni) std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > &&  "jlong"
@@ -20,8 +29,12 @@
 %typemap(in) std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > &&
 %{ $*1_ltype $1_uptr((TYPE *)$input);
   $1 = &$1_uptr; %}
+%typemap(in, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > &
+%{ swig::NoDeleteUniquePtr< TYPE > $1_ndup((TYPE *)$input);
+$1 = &$1_ndup.uptr; %}
 
 %typemap(javain) std::unique_ptr< TYPE >, std::unique_ptr< TYPE > &, std::unique_ptr< TYPE > &&  "$typemap(jstype, TYPE).swigRelease($javainput)"
+%typemap(javain) const std::unique_ptr< TYPE > &  "$typemap(jstype, TYPE).getCPtr($javainput)"
 
 %typemap (out) std::unique_ptr< TYPE > %{
   jlong lpp = 0;
@@ -48,7 +61,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/javascript/jsc/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/javascript/napi/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/javascript/v8/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/lua/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, checkfn="SWIG_isptrtype", noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr(L, $input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, checkfn="SWIG_isptrtype", noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr(L, $input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    SWIG_fail_ptr("$symname", $argnum, $descriptor(TYPE *));
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   SWIG_NewPointerObj(L, $1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN); SWIG_arg++;
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/mzscheme/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/octave/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/perl5/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/php/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr(&$input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE);
@@ -38,6 +47,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr(&$input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    zend_type_error("Expected $descriptor(TYPE *) for argument $argnum of $symname");
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   SWIG_SetPointerZval($result, (void *)$1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN);
 %}
@@ -53,7 +71,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/python/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/ruby/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   %set_output(SWIG_NewPointerObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN | %newpointer_flags));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/tcl/std_unique_ptr.i

@@ -2,12 +2,21 @@
  * std_unique_ptr.i
  *
  * SWIG library file for handling std::unique_ptr.
- * Memory ownership is passed from the std::unique_ptr C++ layer to the proxy
- * class when returning a std::unique_ptr from a function.
- * Memory ownership is passed from the proxy class to the std::unique_ptr in the
- * C++ layer when passed as a parameter to a wrapped function.
+ *
+ * Returning a std::unique_ptr from a wrapped function:
+ *   Memory ownership is passed (moved) from the std::unique_ptr in the C++ layer
+ *   to the proxy class when returning a std::unique_ptr by value from a function.
+ *   Memory ownership is not moved when returning by any sort of reference.
+ *
+ * Passing a std::unique_ptr as a parameter to a wrapped function:
+ *   Memory ownership is passed from the proxy class to the std::unique_ptr in the
+ *   C++ layer when passed as a parameter by value, rvalue reference or non-const
+ *   lvalue reference. Memory ownership is not transferred when passing by const
+ *   lvalue reference.
  * ----------------------------------------------------------------------------- */
 
+%include <unique_ptr.swg>
+
 %define %unique_ptr(TYPE)
 %typemap(in, noblock=1) std::unique_ptr< TYPE > (void *argp = 0, int res = 0) {
   res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), SWIG_POINTER_RELEASE | %convertptr_flags);
@@ -34,6 +43,15 @@
   $1 = &uptr;
 }
 
+%typemap(in, noblock=1, fragment="SwigNoDeleteUniquePtr") const std::unique_ptr< TYPE > & (void *argp = 0, int res = 0, swig::NoDeleteUniquePtr< TYPE > ndup) {
+  res = SWIG_ConvertPtr($input, &argp, $descriptor(TYPE *), 0);
+  if (!SWIG_IsOK(res)) {
+    %argument_fail(res, "TYPE *", $symname, $argnum);
+  }
+  ndup.uptr.reset((TYPE *)argp);
+  $1 = &ndup.uptr;
+}
+
 %typemap (out) std::unique_ptr< TYPE > %{
   Tcl_SetObjResult(interp, SWIG_NewInstanceObj($1.release(), $descriptor(TYPE *), SWIG_POINTER_OWN));
 %}
@@ -49,7 +67,3 @@
 
 %template() std::unique_ptr< TYPE >;
 %enddef
-
-namespace std {
-  template <class T> class unique_ptr {};
-}

Lib/unique_ptr.swg

@@ -0,0 +1,22 @@
+/* -----------------------------------------------------------------------------
+ * unique_ptr.swg
+ *
+ * Common std::unique_ptr support.
+ * Not for direct inclusion.
+ * ----------------------------------------------------------------------------- */
+
+
+%fragment("SwigNoDeleteUniquePtr", "header", fragment="<memory>") {
+namespace swig {
+  template<typename T>
+  struct NoDeleteUniquePtr {
+    std::unique_ptr<T> uptr;
+    NoDeleteUniquePtr(T *p = 0) : uptr(p) {}
+    ~NoDeleteUniquePtr() {uptr.release();}
+  };
+}
+}
+
+namespace std {
+  template <class T> class unique_ptr {};
+}