Embind: Drop $equals, add sameUnoObject

$equals was the last remaining special $... method that we added to the UNO
interfaces, and it looks better anyway to turn it into a symmetric free function
(that can be called with null for either argument) that is actually independent
of specific interface types

Change-Id: I22a1d08b8b15a0ed2dd37fa9fbc95f568641dec3
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/166317
Tested-by: Jenkins
Reviewed-by: Stephan Bergmann <stephan.bergmann@allotropia.de>

static/source/embindmaker/embindmaker.cxx

@@ -1088,12 +1088,7 @@ SAL_IMPLEMENT_MAIN()
                       "        .class_function(\"reference\", +[]("
                    << cppName(ifc)
                    << " * the_interface) { return ::com::sun::star::uno::Reference(the_interface); "
-                      "}, ::emscripten::allow_raw_pointers())\n"
-                      "        .function(\"$equals\", +[](::com::sun::star::uno::Reference<"
-                   << cppName(ifc)
-                   << "> const & the_self, "
-                      "::com::sun::star::uno::Reference<::com::sun::star::uno::XInterface> const & "
-                      "the_other) { return the_self == the_other; })\n";
+                      "}, ::emscripten::allow_raw_pointers())\n";
             if (bases.size() > 1)
             {
                 std::set<OUString> visitedBases;

static/source/unoembindhelpers/PrimaryBindings.cxx

@@ -13,8 +13,10 @@
 #include <emscripten/bind.h>
 
 #include <com/sun/star/uno/Any.hxx>
+#include <com/sun/star/uno/Reference.hxx>
 #include <com/sun/star/uno/RuntimeException.hpp>
 #include <com/sun/star/uno/Type.hxx>
+#include <com/sun/star/uno/XInterface.hpp>
 #include <comphelper/processfactory.hxx>
 #include <cppuhelper/exc_hlp.hxx>
 #include <o3tl/any.hxx>
@@ -401,6 +403,9 @@ EMSCRIPTEN_BINDINGS(PrimaryBindings)
     function("throwUnoException", +[](css::uno::Type const& type, emscripten::val const& value) {
         cppu::throwException(constructAny(type, value));
     });
+    function("sameUnoObject",
+             +[](css::uno::Reference<css::uno::XInterface> const& ref1,
+                 css::uno::Reference<css::uno::XInterface> const& ref2) { return ref1 == ref2; });
     function("rtl_uString_release",
              +[](std::uintptr_t ptr) { rtl_uString_release(reinterpret_cast<rtl_uString*>(ptr)); });
 

unotest/source/embindtest/embindtest.js

@@ -308,7 +308,7 @@ Module.addOnPostRun(function() {
     {
         let v = test.getAnyInterface();
         console.log(v);
-        console.assert(v.get().$equals(test));
+        console.assert(Module.sameUnoObject(v.get(), test));
         console.assert(test.isAnyInterface(v));
         v.delete();
         let a = new Module.uno_Any(