private void ProjectMethods(EmbeddedItem externalItem)
{
Type type = externalItem.HostType;
object obj = externalItem.HostObject;
JsValue typeValue = externalItem.ScriptValue;
IList <JsNativeFunction> nativeFunctions = externalItem.NativeFunctions;
bool instance = externalItem.IsInstance;
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(instance);
IEnumerable <MethodInfo> methods = type.GetMethods(defaultBindingFlags)
.Where(ReflectionHelpers.IsFullyFledgedMethod);
IEnumerable <IGrouping <string, MethodInfo> > methodGroups = methods.GroupBy(m => m.Name);
foreach (IGrouping <string, MethodInfo> methodGroup in methodGroups)
{
string methodName = methodGroup.Key;
MethodInfo[] methodCandidates = methodGroup.ToArray();
JsNativeFunction nativeFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
if (instance && obj == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateTypeError(
string.Format(Strings.Runtime_InvalidThisContextForHostObjectMethod, methodName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
object[] processedArgs = GetHostItemMemberArguments(args);
var bestFitMethod = (MethodInfo)ReflectionHelpers.GetBestFitMethod(
methodCandidates, processedArgs);
if (bestFitMethod == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateReferenceError(
string.Format(Strings.Runtime_SuitableMethodOfHostObjectNotFound, methodName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
ReflectionHelpers.FixArgumentTypes(ref processedArgs, bestFitMethod.GetParameters());
object result;
try
{
result = bestFitMethod.Invoke(obj, processedArgs);
}
catch (Exception e)
{
string errorMessage = instance ?
string.Format(
Strings.Runtime_HostObjectMethodInvocationFailed, methodName, e.Message)
:
string.Format(
Strings.Runtime_HostTypeMethodInvocationFailed, methodName, typeName, e.Message)
;
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateError(errorMessage);
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
JsValue resultValue = MapToScriptType(result);
return(resultValue);
};
nativeFunctions.Add(nativeFunction);
JsValue methodValue = JsValue.CreateFunction(nativeFunction);
typeValue.SetProperty(methodName, methodValue, true);
}
}
private static void CreateAndSetReferenceError(string message)
{
JsValue errorValue = JsErrorHelpers.CreateReferenceError(message);
JsErrorHelpers.SetException(errorValue);
}
private EmbeddedType CreateEmbeddedType(Type type)
{
#if NET40
Type typeInfo = type;
#else
TypeInfo typeInfo = type.GetTypeInfo();
#endif
string typeName = type.FullName;
BindingFlags defaultBindingFlags = ReflectionHelpers.GetDefaultBindingFlags(true);
ConstructorInfo[] constructors = type.GetConstructors(defaultBindingFlags);
JsNativeFunction nativeConstructorFunction = (callee, isConstructCall, args, argCount, callbackData) =>
{
object result;
JsValue resultValue;
object[] processedArgs = GetHostItemMemberArguments(args);
if (processedArgs.Length == 0 && typeInfo.IsValueType)
{
result = Activator.CreateInstance(type);
resultValue = MapToScriptType(result);
return(resultValue);
}
if (constructors.Length == 0)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateError(
string.Format(Strings.Runtime_HostTypeConstructorNotFound, typeName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
var bestFitConstructor = (ConstructorInfo)ReflectionHelpers.GetBestFitMethod(
constructors, processedArgs);
if (bestFitConstructor == null)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateReferenceError(
string.Format(Strings.Runtime_SuitableConstructorOfHostTypeNotFound, typeName));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
ReflectionHelpers.FixArgumentTypes(ref processedArgs, bestFitConstructor.GetParameters());
try
{
result = bestFitConstructor.Invoke(processedArgs);
}
catch (Exception e)
{
JsValue undefinedValue = JsValue.Undefined;
JsValue errorValue = JsErrorHelpers.CreateError(
string.Format(Strings.Runtime_HostTypeConstructorInvocationFailed, typeName, e.Message));
JsErrorHelpers.SetException(errorValue);
return(undefinedValue);
}
resultValue = MapToScriptType(result);
return(resultValue);
};
GCHandle embeddedTypeHandle = GCHandle.Alloc(type);
IntPtr embeddedTypePtr = GCHandle.ToIntPtr(embeddedTypeHandle);
JsValue objValue = JsValue.CreateExternalObject(embeddedTypePtr, _embeddedTypeFinalizeCallback);
JsValue typeValue = JsValue.CreateFunction(nativeConstructorFunction);
SetNonEnumerableProperty(typeValue, ExternalObjectPropertyName, objValue);
var embeddedType = new EmbeddedType(type, typeValue,
new List <JsNativeFunction> {
nativeConstructorFunction
});
ProjectFields(embeddedType);
ProjectProperties(embeddedType);
ProjectMethods(embeddedType);
FreezeObject(typeValue);
return(embeddedType);
}