Restructure and generalize tuple accessors.

src/embind/embind.js

@@ -419,30 +419,34 @@ function __embind_register_tuple_element(
 
 function __embind_register_tuple_element_accessor(
     rawTupleType,
-    rawElementType,
-    rawStaticGetter,
+    getterReturnType,
+    getter,
     getterContext,
-    rawStaticSetter,
+    setterArgumentType,
+    setter,
     setterContext
 ) {
     var tupleType = requireRegisteredType(rawTupleType, 'tuple');
-    rawStaticGetter = FUNCTION_TABLE[rawStaticGetter];
-    rawStaticSetter = FUNCTION_TABLE[rawStaticSetter];
+    getter = FUNCTION_TABLE[getter];
+    setter = FUNCTION_TABLE[setter];
 
-    whenDependentTypesAreResolved([], [rawElementType], function(elementType) {
-        elementType = elementType[0];
+    // TODO: test incomplete registration of value tuples
+    whenDependentTypesAreResolved([], [getterReturnType, setterArgumentType], function(types) {
+        var getterReturnType = types[0];
+        var setterArgumentType = types[1];
         tupleType.elements.push({
             read: function(ptr) {
-                return elementType.fromWireType(rawStaticGetter(
-                    getterContext,
-                    ptr));
+                return getterReturnType.fromWireType(
+                    getter(
+                        getterContext,
+                        ptr));
             },
             write: function(ptr, o) {
                 var destructors = [];
-                rawStaticSetter(
+                setter(
                     setterContext,
                     ptr,
-                    elementType.toWireType(destructors, o));
+                    setterArgumentType.toWireType(destructors, o));
                 runDestructors(destructors);
             }
         });

system/include/emscripten/bind.h

@@ -77,9 +77,10 @@ namespace emscripten {
 
             void _embind_register_tuple_element_accessor(
                 TYPEID tupleType,
-                TYPEID elementType,
+                TYPEID getterReturnType,
                 GenericFunction staticGetter,
                 void* getterContext,
+                TYPEID setterArgumentType,
                 GenericFunction staticSetter,
                 void* setterContext);
 
@@ -419,54 +420,23 @@ namespace emscripten {
             return *this;
         }
 
-        template<typename ElementType>
-        value_tuple& element(ElementType (*getter)(const ClassType&), void (*setter)(ClassType&, ElementType)) {
+        template<typename GetterReturnType, typename SetterArgumentType>
+        value_tuple& element(
+            GetterReturnType (*getter)(const ClassType&),
+            void (*setter)(ClassType&, SetterArgumentType)
+        ) {
             using namespace internal;
             _embind_register_tuple_element_accessor(
                 TypeID<ClassType>::get(),
-                TypeID<ElementType>::get(),
-                reinterpret_cast<GenericFunction>(&MemberAccess<ClassType, ElementType>::template propertyGet<ElementType(*)(const ClassType&)>),
+                TypeID<GetterReturnType>::get(),
+                reinterpret_cast<GenericFunction>(
+                    &MemberAccess<ClassType, GetterReturnType>
+                    ::template propertyGet<GetterReturnType(*)(const ClassType&)>),
                 getContext(getter),
-                reinterpret_cast<GenericFunction>(&MemberAccess<ClassType, ElementType>::template propertySet<void(*)(ClassType&, ElementType)>),
-                getContext(setter));
-            return *this;
-        }
-
-        template<typename ElementType>
-        value_tuple& element(ElementType (*getter)(const ClassType&), void (*setter)(ClassType&, const ElementType&)) {
-            using namespace internal;
-            _embind_register_tuple_element_accessor(
-                TypeID<ClassType>::get(),
-                TypeID<ElementType>::get(),
-                reinterpret_cast<GenericFunction>(&MemberAccess<ClassType, ElementType>::template propertyGet<ElementType(*)(const ClassType&)>),
-                getContext(getter),
-                reinterpret_cast<GenericFunction>(&MemberAccess<ClassType, ElementType>::template propertySet<void(*)(ClassType&, ElementType)>),
-                getContext(setter));
-            return *this;
-        }
-
-        template<typename ElementType>
-        value_tuple& element(ElementType (*getter)(const ClassType&), void (*setter)(ClassType&, const ElementType&&)) {
-            using namespace internal;
-            _embind_register_tuple_element_accessor(
-                TypeID<ClassType>::get(),
-                TypeID<ElementType>::get(),
-                reinterpret_cast<GenericFunction>(&MemberAccess<ClassType, ElementType>::template propertyGet<ElementType(*)(const ClassType&)>),
-                getContext(getter),
-                reinterpret_cast<GenericFunction>(&MemberAccess<ClassType, ElementType>::template propertySet<void(*)(ClassType&, ElementType)>),
-                getContext(setter));
-            return *this;
-        }
-
-        template<typename ElementType>
-        value_tuple& element(ElementType (*getter)(const ClassType&), void (*setter)(ClassType&, ElementType&)) {
-            using namespace internal;
-            _embind_register_tuple_element_accessor(
-                TypeID<ClassType>::get(),
-                TypeID<ElementType>::get(),
-                reinterpret_cast<GenericFunction>(&MemberAccess<ClassType, ElementType>::template propertyGet<ElementType(*)(const ClassType&)>),
-                getContext(getter),
-                reinterpret_cast<GenericFunction>(&MemberAccess<ClassType, ElementType>::template propertySet<void(*)(ClassType&, ElementType)>),
+                TypeID<SetterArgumentType>::get(),
+                reinterpret_cast<GenericFunction>(
+                    &MemberAccess<ClassType, SetterArgumentType>
+                    ::template propertySet<void(*)(ClassType&, SetterArgumentType)>),
                 getContext(setter));
             return *this;
         }