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 CreateAndSetTypeError(string message) { JsValue errorValue = JsErrorHelpers.CreateTypeError(message); JsErrorHelpers.SetException(errorValue); }
private void ProjectProperties(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); PropertyInfo[] properties = type.GetProperties(defaultBindingFlags); foreach (PropertyInfo property in properties) { string propertyName = property.Name; JsValue descriptorValue = JsValue.CreateObject(); descriptorValue.SetProperty("enumerable", JsValue.True, true); if (property.GetGetMethod() != null) { JsNativeFunction nativeGetFunction = (callee, isConstructCall, args, argCount, callbackData) => { if (instance && obj == null) { JsValue undefinedValue = JsValue.Undefined; JsValue errorValue = JsErrorHelpers.CreateTypeError( string.Format(Strings.Runtime_InvalidThisContextForHostObjectProperty, propertyName)); JsErrorHelpers.SetException(errorValue); return(undefinedValue); } object result; try { result = property.GetValue(obj, new object[0]); } catch (Exception e) { string errorMessage = instance ? string.Format( Strings.Runtime_HostObjectPropertyGettingFailed, propertyName, e.Message) : string.Format( Strings.Runtime_HostTypePropertyGettingFailed, propertyName, 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(nativeGetFunction); JsValue getMethodValue = JsValue.CreateFunction(nativeGetFunction); descriptorValue.SetProperty("get", getMethodValue, true); } if (property.GetSetMethod() != null) { JsNativeFunction nativeSetFunction = (callee, isConstructCall, args, argCount, callbackData) => { if (instance && obj == null) { JsValue undefinedValue = JsValue.Undefined; JsValue errorValue = JsErrorHelpers.CreateTypeError( string.Format(Strings.Runtime_InvalidThisContextForHostObjectProperty, propertyName)); JsErrorHelpers.SetException(errorValue); return(undefinedValue); } object value = MapToHostType(args[1]); ReflectionHelpers.FixPropertyValueType(ref value, property); try { property.SetValue(obj, value, new object[0]); } catch (Exception e) { string errorMessage = instance ? string.Format( Strings.Runtime_HostObjectPropertySettingFailed, propertyName, e.Message) : string.Format( Strings.Runtime_HostTypePropertySettingFailed, propertyName, typeName, e.Message) ; JsValue undefinedValue = JsValue.Undefined; JsValue errorValue = JsErrorHelpers.CreateError(errorMessage); JsErrorHelpers.SetException(errorValue); return(undefinedValue); } return(JsValue.Undefined); }; nativeFunctions.Add(nativeSetFunction); JsValue setMethodValue = JsValue.CreateFunction(nativeSetFunction); descriptorValue.SetProperty("set", setMethodValue, true); } typeValue.DefineProperty(propertyName, descriptorValue); } }