public static SetException ( |
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exception | The JavaScript exception to set for the runtime of the current context | |
return | void |
private EmbeddedObject CreateEmbeddedFunction(Delegate del) { JsNativeFunction nativeFunction = (callee, isConstructCall, args, argCount, callbackData) => { #if NET40 MethodInfo method = del.Method; #else MethodInfo method = del.GetMethodInfo(); #endif ParameterInfo[] parameters = method.GetParameters(); object[] processedArgs = GetHostItemMemberArguments(args, parameters.Length); ReflectionHelpers.FixArgumentTypes(ref processedArgs, parameters); object result; try { result = del.DynamicInvoke(processedArgs); } catch (Exception e) { JsValue undefinedValue = JsValue.Undefined; Exception exception = UnwrapException(e); var wrapperException = exception as WrapperException; JsValue errorValue = wrapperException != null? CreateErrorFromWrapperException(wrapperException) : JsErrorHelpers.CreateError(string.Format( Strings.Runtime_HostDelegateInvocationFailed, exception.Message)) ; JsContext.SetException(errorValue); return(undefinedValue); } JsValue resultValue = MapToScriptType(result); return(resultValue); }; GCHandle delHandle = GCHandle.Alloc(del); IntPtr delPtr = GCHandle.ToIntPtr(delHandle); JsValue objValue = JsValue.CreateExternalObject(delPtr, _embeddedObjectFinalizeCallback); JsValue functionValue = JsValue.CreateFunction(nativeFunction); SetNonEnumerableProperty(functionValue, ExternalObjectPropertyName, objValue); var embeddedObject = new EmbeddedObject(del, functionValue, new List <JsNativeFunction> { nativeFunction }); return(embeddedObject); }
private static void CreateAndSetTypeError(string message) { JsValue errorValue = JsErrorHelpers.CreateTypeError(message); JsContext.SetException(errorValue); }
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) { CreateAndSetTypeError(string.Format( Strings.Runtime_InvalidThisContextForHostObjectMethod, methodName)); return(JsValue.Undefined); } object[] processedArgs = GetHostItemMemberArguments(args); var bestFitMethod = (MethodInfo)ReflectionHelpers.GetBestFitMethod( methodCandidates, processedArgs); if (bestFitMethod == null) { CreateAndSetReferenceError(string.Format( Strings.Runtime_SuitableMethodOfHostObjectNotFound, methodName)); return(JsValue.Undefined); } ReflectionHelpers.FixArgumentTypes(ref processedArgs, bestFitMethod.GetParameters()); object result; try { result = bestFitMethod.Invoke(obj, processedArgs); } catch (Exception e) { Exception exception = UnwrapException(e); var wrapperException = exception as WrapperException; JsValue errorValue; if (wrapperException != null) { errorValue = CreateErrorFromWrapperException(wrapperException); } else { string errorMessage = instance ? string.Format(Strings.Runtime_HostObjectMethodInvocationFailed, methodName, exception.Message) : string.Format(Strings.Runtime_HostTypeMethodInvocationFailed, methodName, typeName, exception.Message) ; errorValue = JsErrorHelpers.CreateError(errorMessage); } JsContext.SetException(errorValue); return(JsValue.Undefined); } JsValue resultValue = MapToScriptType(result); return(resultValue); }; nativeFunctions.Add(nativeFunction); JsValue methodValue = JsValue.CreateFunction(nativeFunction); typeValue.SetProperty(methodName, methodValue, true); } }
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) { CreateAndSetTypeError(string.Format( Strings.Runtime_InvalidThisContextForHostObjectProperty, propertyName)); return(JsValue.Undefined); } object result; try { result = property.GetValue(obj, new object[0]); } catch (Exception e) { Exception exception = UnwrapException(e); var wrapperException = exception as WrapperException; JsValue errorValue; if (wrapperException != null) { errorValue = CreateErrorFromWrapperException(wrapperException); } else { string errorMessage = instance ? string.Format(Strings.Runtime_HostObjectPropertyGettingFailed, propertyName, exception.Message) : string.Format(Strings.Runtime_HostTypePropertyGettingFailed, propertyName, typeName, exception.Message) ; errorValue = JsErrorHelpers.CreateError(errorMessage); } JsContext.SetException(errorValue); return(JsValue.Undefined); } 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) { CreateAndSetTypeError(string.Format( Strings.Runtime_InvalidThisContextForHostObjectProperty, propertyName)); return(JsValue.Undefined); } object value = MapToHostType(args[1]); ReflectionHelpers.FixPropertyValueType(ref value, property); try { property.SetValue(obj, value, new object[0]); } catch (Exception e) { Exception exception = UnwrapException(e); var wrapperException = exception as WrapperException; JsValue errorValue; if (wrapperException != null) { errorValue = CreateErrorFromWrapperException(wrapperException); } else { string errorMessage = instance ? string.Format(Strings.Runtime_HostObjectPropertySettingFailed, propertyName, exception.Message) : string.Format(Strings.Runtime_HostTypePropertySettingFailed, propertyName, typeName, exception.Message) ; errorValue = JsErrorHelpers.CreateError(errorMessage); } JsContext.SetException(errorValue); return(JsValue.Undefined); } return(JsValue.Undefined); }; nativeFunctions.Add(nativeSetFunction); JsValue setMethodValue = JsValue.CreateFunction(nativeSetFunction); descriptorValue.SetProperty("set", setMethodValue, true); } typeValue.DefineProperty(propertyName, descriptorValue); } }
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) { CreateAndSetError(string.Format(Strings.Runtime_HostTypeConstructorNotFound, typeName)); return(JsValue.Undefined); } var bestFitConstructor = (ConstructorInfo)ReflectionHelpers.GetBestFitMethod( constructors, processedArgs); if (bestFitConstructor == null) { CreateAndSetReferenceError(string.Format( Strings.Runtime_SuitableConstructorOfHostTypeNotFound, typeName)); return(JsValue.Undefined); } ReflectionHelpers.FixArgumentTypes(ref processedArgs, bestFitConstructor.GetParameters()); try { result = bestFitConstructor.Invoke(processedArgs); } catch (Exception e) { Exception exception = UnwrapException(e); var wrapperException = exception as WrapperException; JsValue errorValue = wrapperException != null? CreateErrorFromWrapperException(wrapperException) : JsErrorHelpers.CreateError(string.Format( Strings.Runtime_HostTypeConstructorInvocationFailed, typeName, exception.Message)) ; JsContext.SetException(errorValue); return(JsValue.Undefined); } 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); }